National Weather Service United States Department of Commerce

Back-to-Back Pacific Storms to Impact the West Coast; Heavy Snow in the Central Appalachians

Back-to-back powerful Pacific storm systems to impact the Pacific Northwest and northern California through the end of this week with heavy rain, flooding, strong winds, and higher elevation mountain snow. A strong, long-duration atmospheric river will accompany the Pacific storms, bringing excessive rainfall and flash flooding to southwest Oregon and northwest California through the week. Read More >

Overview

Thunderstorms developed in portions of New York and Pennsylvania during the afternoon on May 15, quickly forming a well-organized quasi-linear convective system (QLCS) with embedded bow echoes. Widespread wind damage occurred with the QLCS as it moved rapidly eastward into southeast New York, eastern Pennsylvania, and northern New Jersey by late afternoon. The most significant damage occurred near and north of the Interstate 78 corridor, with dozens of reports received from Carbon, Monroe, Northampton, Sussex, Warren, and Morris Counties. One fatality occurred in Monroe County as a tree fell onto a vehicle, killing the occupant. The QLCS weakened by early evening as daytime heating waned and the storms approached a stable marine layer over and adjacent to the Atlantic Ocean.

 

 

 

 

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Radar Reflectivity Animation for the Event

Meteorological Environment/Setup

Synoptic Overview at 12z 15 May 2018 (courtesy of SPC)

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Figure 1: 250-mb analysis Figure 2: 300-mb analysis Figure 3: 500-mb analysis
 
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Figure 4: 700-mb analysis Figure 5: 850-mb analysis Figure 6: 925-mb analysis

Synoptic Overview at 00z 16 May 2018 (courtesy of SPC)

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Figure 7: 250-mb analysis Figure 8: 300-mb analysis Figure 9: 500-mb analysis
 
Environment Environment Environment
Figure 10: 700-mb analysis Figure 11: 850-mb analysis Figure 12: 925-mb analysis
 

Surface Maps (courtesy of WPC)

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Figure 13: 15z surface map Figure 14: 18z surface map Figure 15: 21z surface map
 
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Figure 16: 00z surface map Figure 17: 03z surface map Figure 18: 06z surface map

Observed Soundings
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Figure 19: 12z Upton, NY sounding Figure 20: 12z Pittsburgh, PA sounding Figure 21: 12z Sterling, VA sounding
Environment Environment Environment
Figure 22: 18z Albany, NY sounding Figure 23: 19z Upton, NY sounding Figure 24: 00z Pittsburgh, PA sounding

Preliminary Storm Reports

prelimreports prelimreports prelimreports
Figure 1: National Preliminary Reports 12z 15 May 2018 to 12z 16 May 2018 Figure 2: Zoomed Preliminary Reports Figure 3: Prelim Reports vs. 1630z SPC Convective Outlook

Preliminary Local Storm Reports

 

NWUS51 KPHI 162057
LSRPHI

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
456 PM EDT WED MAY 16 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0333 PM     TSTM WND DMG     EAST SIDE               41.06N  75.77W
05/15/2018                   CARBON             PA   NEWSPAPER       

            TWO POLES FELL ON A BUILDING AT A POLLING LOCATION IN 
            WHITE HAVEN. SEVERAL TREES WERE DOWN IN THE AREA AS 
            WELL. TIME APPROXIMATED BY RADAR. 

0340 PM     TSTM WND DMG     PENN FOREST TWP         40.94N  75.67W
05/15/2018                   CARBON             PA   SOCIAL MEDIA    

            TREES DOWN. 

0345 PM     TSTM WND GST     1 W EMERALD LAKES       41.09N  75.44W
05/15/2018  M50 MPH          MONROE             PA   MESONET         

            CWOP STATION REPORTS WIND GUST OF 50 MPH 

0348 PM     TSTM WND DMG     MOUNT POCONO            41.13N  75.36W
05/15/2018                   MONROE             PA   SOCIAL MEDIA    

            NUMEROUS TREES DOWNED. ONE DAMAGED A CAR ON LONG POND 
            ROAD. TIME APPROXIMATED FROM RADAR. 

0350 PM     TSTM WND DMG     1 NE MERWINSBURG        40.97N  75.46W
05/15/2018                   MONROE             PA   BROADCAST MEDIA 

            *** 1 FATAL *** TREE DOWN ON A CAR KILLING ONE PERSON 
            INSIDE, NEAR THE TOWN OF EFFORT. 

0354 PM     HAIL             2 NE ALBRIGHTSVILLE     41.03N  75.57W
05/15/2018  M0.88 INCH       CARBON             PA   PUBLIC          

            HAIL COVERING GROUND AND 45 MPH GUSTS. 

0354 PM     TSTM WND DMG     MOUNT POCONO            41.12N  75.36W
05/15/2018                   MONROE             PA   TRAINED SPOTTER 

            SEVERAL ROADS CLOSED AND POWER LINES DOWN. *EVENT TIME 
            CORRECTED* 

0354 PM     TSTM WND DMG     1 NW POLK TWP           40.93N  75.51W
05/15/2018                   MONROE             PA   DEPT OF HIGHWAYS

            DOWNED UTILITY ON STATE HIGHWAY 534 NEAR DOTTERS CORNER 
            ROAD. ALL LANES CLOSED. TIME APPROXIMATED FROM RADAR. 

0356 PM     TSTM WND GST     1 NE BOSSARDSVILLE      40.94N  75.26W
05/15/2018  M73 MPH          MONROE             PA   TRAINED SPOTTER 

0356 PM     TSTM WND DMG     1 NE BOSSARDSVILLE      40.94N  75.26W
05/15/2018                   MONROE             PA   TRAINED SPOTTER 

            NUMEROUS TREES DOWN. 

0400 PM     TSTM WND DMG     STROUDSBURG             40.98N  75.20W
05/15/2018                   MONROE             PA   TRAINED SPOTTER 

            NUMEROUS TREES DOWN ON VEHICLES, HOUSES, AND ROADS. 
            MANY ROAD CLOSURES AND 80,000 ESTIMATED WITHOUT POWER. 
            HOLDING STUDENTS IN SCHOOLS. 

0400 PM     TSTM WND DMG     1 ENE MECHANICSVILLE    40.92N  75.34W
05/15/2018                   MONROE             PA   PUBLIC          

            RECEIVED A CALL FROM A PROPERTY OWNER REPORTING 
            SIGNIFCANT TREE DAMAGE INCLUDING A ROW OF 10 TREES 
            UPROOTED AND DAMGAGE TO A GROVE OF TREES IN A VALLEY 
            WITH TREES SNAPPED AND UPROOTED 

0404 PM     HAIL             EFFORT                  40.94N  75.44W
05/15/2018  M0.25 INCH       MONROE             PA   TRAINED SPOTTER 

            50 MPH GUSTS AND SMALL TWIGS AND BRANCHES DOWN. 

0405 PM     TSTM WND DMG     TURN VILLA              41.07N  75.05W
05/15/2018                   MONROE             PA   DEPT OF HIGHWAYS

            DOWNED TREE IN WIRES ON U.S. HIGHWAY 209 NEAR CAESARS 
            POCONO PALACE ROAD. ALL LANES CLOSED. TIME APPROXIMATED 
            FROM RADAR. 

0406 PM     TSTM WND DMG     KNOWLTON                40.93N  75.03W
05/15/2018                   WARREN             NJ   SOCIAL MEDIA    

            NUMEROUS TREES DOWN. 

0407 PM     TSTM WND DMG     1 SW WIND GAP           40.84N  75.30W
05/15/2018                   NORTHAMPTON        PA   SOCIAL MEDIA    

            TREES DOWN ON ROUTE 33 NORTHBOUND BLOCKING THE RIGHT 
            LANE. 

0408 PM     TSTM WND GST     2 NNW MONROE LAKE       41.14N  75.15W
05/15/2018  E58 MPH          MONROE             PA   TRAINED SPOTTER 

            SPOTTER ESTIMATES WIND GUSTS OF 58+ MPH. PEA SIZE HAIL 
            WAS ALSO FALLING AT THE TIME OF THE REPORT 

0408 PM     TSTM WND GST     LENHARTSVILLE           40.57N  75.89W
05/15/2018  M62 MPH          BERKS              PA   MESONET         

0410 PM     TSTM WND DMG     BUSHKILL TWP            40.79N  75.34W
05/15/2018                   NORTHAMPTON        PA   FIRE DEPT/RESCUE

            MULTIPLE TREES DOWN. 

0411 PM     TSTM WND DMG     SLATEFORD               40.94N  75.11W
05/15/2018                   NORTHAMPTON        PA   DEPT OF HIGHWAYS

            DOWNED TREE ON STATE HIGHWAY 611 NEAR RAILROAD AVENUE. 
            ALL LANES CLOSED. TIME APPROXIMATED FROM RADAR. 

0412 PM     TSTM WND DMG     FRANKFORD TWP           41.15N  74.72W
05/15/2018                   SUSSEX             NJ   METEOROLOGIST   

            TREES DOWN. 

0413 PM     TSTM WND GST     CHERRY HILL             40.76N  75.31W
05/15/2018  M58 MPH          NORTHAMPTON        PA   TRAINED SPOTTER 

            MEASURED DURING THE GUST FRONT. 

0414 PM     TSTM WND DMG     BRANCHVILLE             41.15N  74.75W
05/15/2018                   SUSSEX             NJ   SOCIAL MEDIA    

            MULTIPLE SOCIAL MEDIA POSTS AND PHOTOS OF TREE AND 
            PROPERTY DAMAGE IN BRANCHVILLE. TIME ESTIMATED FROM 
            RADAR. 

0415 PM     TSTM WND DMG     BANGOR                  40.87N  75.21W
05/15/2018                   NORTHAMPTON        PA   SOCIAL MEDIA    

            SEVERAL REPORTS OF TREES AND POWERLINES DOWN ACROSS 
            NORTHAMPTON COUNTY. TIME ESTIMATED FROM RADAR 

0415 PM     TSTM WND DMG     FREDON                  41.04N  74.81W
05/15/2018                   SUSSEX             NJ   SOCIAL MEDIA    

            UPROOTED AND SNAPPED TREES 

0417 PM     TSTM WND DMG     BLAIRSTOWN              40.98N  74.98W
05/15/2018                   WARREN             NJ   DEPT OF HIGHWAYS

            NUMEROUS REPORTS OF POWER LINES DOWN. TIME APPROXIMATED 
            FROM RADAR. 

0418 PM     TSTM WND DMG     SCIOTA                  40.93N  75.32W
05/15/2018                   MONROE             PA   DEPT OF HIGHWAYS

            DOWNED UTILITY ON U.S. HIGHWAY 209 BETWEEN LESH ROAD 
            AND STATE ROAD 0033. TIME APPROXIMATED FROM RADAR. 

0418 PM     TSTM WND DMG     NEW TRIPOLI             40.68N  75.75W
05/15/2018                   LEHIGH             PA   SOCIAL MEDIA    

            TREES DOWN AND ROOF DAMAGE AT A RESIDENCE IN NEW 
            TRIPOLI. TIME ESTIMATED FROM RADAR. 

0418 PM     TSTM WND DMG     UPPER TULPEHOCKEN TWP   40.51N  76.17W
05/15/2018                   BERKS              PA   NEWSPAPER       

            TREE AND PROPERTY DAMAGE AT A TRAILER PARK IN UPPER 
            TULPEHOCKEN TWP. TIME ESTIMATED BY RADAR. 

0420 PM     HAIL             GERMANSVILLE            40.70N  75.71W
05/15/2018  E0.88 INCH       LEHIGH             PA   SOCIAL MEDIA    

            NICKEL SIZE HAIL IN HEIDELBURG TOWNSHIP 

0420 PM     TSTM WND DMG     STILLWATER TWP          41.07N  74.89W
05/15/2018                   SUSSEX             NJ   TRAINED SPOTTER 

            SEVERAL STRUCTURES WITH DAMAGE DUE TO DOWNED TREES. 
            NUMEROUS ROADS IMPASSABLE DUE TO DEBRIS. 

0420 PM     TSTM WND DMG     1 NW NEWTON             41.06N  74.76W
05/15/2018                   SUSSEX             NJ   DEPT OF HIGHWAYS

            DOWNED TREE ON STATE HIGHWAY 94 SOUTH OF WEST END 
            AVENUE IN NEWTON. LANE CLOSURES IN PLACE. TIME 
            APPROXIMATED FROM RADAR. 

0420 PM     TSTM WND DMG     SPARTA                  41.03N  74.64W
05/15/2018                   SUSSEX             NJ   SOCIAL MEDIA    

            EXTENSIVE TREE DAMAGE AND SEVERAL POWER LINES DOWN IN 
            SPARTA. SEVERAL ROADS CLOSED. TIME APPROXIMATED FROM 
            RADAR. 

0422 PM     TSTM WND GST     LEHIGH VALLEY INTL AIRP 40.65N  75.44W
05/15/2018  M51 MPH          LEHIGH             PA   ASOS            

            KABE REPORTS WIND GUST OF 51 MPH 

0422 PM     TSTM WND DMG     1 NW ACKERSON           41.09N  74.68W
05/15/2018                   SUSSEX             NJ   DEPT OF HIGHWAYS

            DOWNED TREE ON STATE HIGHWAY 15 NEAR STATE HIGHWAY 94 
            IN LAFAYETTE TWP. ALL LANES CLOSED AND DETOURED. TIME 
            APPROXIMATED FROM RADAR. 

0423 PM     TSTM WND DMG     SPRINGDALE              41.02N  74.77W
05/15/2018                   SUSSEX             NJ   DEPT OF HIGHWAYS

            DOWNED TREE ON U.S. HIGHWAY 206 NEAR SPRINGDALE ROAD IN 
            ANDOVER TWP. ALL LANES CLOSED AND DETOURED. TIME 
            APPROXIMATED FROM RADAR. 

0424 PM     TSTM WND DMG     2 ESE UPPER BERN TWP    40.50N  76.07W
05/15/2018                   BERKS              PA   PUBLIC          

            RECEIVED A CALL FROM A PROPERTY OWNER THAT REPORTED 
            SIGNIFICANT TREE DAMAGE INCLUDING APPROX. 40 TREES 
            UPROOTED OR SNAPPED AND LEAVES STRIPPED OFF OF TREES 
            STILL STANDING. SOME SHINGLES WERE ALSO BLOWN OFF OF HIS 
            HOME 

0425 PM     LIGHTNING        STILLWATER              41.04N  74.88W
05/15/2018                   SUSSEX             NJ   PUBLIC          

            SEVERAL LIGHTNING STRIKES REPORTED TO STRUCTURES 
            RESULTING IN FIRES IN SUSSEX COUNTY. REPORTS HEARD VIA 
            POLICE/FIRE RADIO. 

0425 PM     TSTM WND DMG     NEWTON                  41.05N  74.75W
05/15/2018                   SUSSEX             NJ   SOCIAL MEDIA    

            TREES DOWN ON POWERLINES. 

0425 PM     TSTM WND DMG     VERNON                  41.20N  74.48W
05/15/2018                   SUSSEX             NJ   DEPT OF HIGHWAYS

            DOWNED TREE ON STATE HIGHWAY 94 NEAR VERNON CROSSINGS 
            ROAD. ALL LANES CLOSED AND DETOURED. TIME ESTIMATED FROM 
            RADAR. 

0425 PM     TSTM WND DMG     SHARTLESVILLE           40.51N  76.10W
05/15/2018                   BERKS              PA   SOCIAL MEDIA    

            LARGE TREE AT LEAST ONE FOOT IN DIAMETER DOWN. 

0425 PM     HAIL             SHARTLESVILLE           40.51N  76.10W
05/15/2018  M0.75 INCH       BERKS              PA   SOCIAL MEDIA    

            DIME SIZED HAIL. 

0427 PM     FUNNEL CLOUD     5 SSE BERNVILLE         40.37N  76.07W
05/15/2018                   BERKS              PA   TRAINED SPOTTER 

            BRIEF FUNNEL CLOUD REPORTED SOUTH-SOUTHEAST OF 
            BERNVILLE. 

0427 PM     TSTM WND DMG     WIND GAP                40.85N  75.29W
05/15/2018                   NORTHAMPTON        PA   SOCIAL MEDIA    

            DOWNED TREES REPORTED IN WIND GAP, WITH SOME DAMAGING 
            CARS. TIME APPROXIMATED FROM RADAR. 

0428 PM     TSTM WND DMG     STOCKHOLM               41.09N  74.52W
05/15/2018                   SUSSEX             NJ   DEPT OF HIGHWAYS

            DOWNED TREE ON STATE HIGHWAY 23 NORTH OF PATERSON 
            HAMBURG TURNPIKE. LANE CLOSURES IN PLACE. 

0428 PM     TSTM WND DMG     1 WSW BLAZIERS CORNER   40.72N  74.57W
05/15/2018                   SOMERSET           NJ   DEPT OF HIGHWAYS

            DOWNED TREE ON U.S. HIGHWAY 202 NEAR MOUNT AIRY ROAD IN 
            BERNARDSVILLE. ALL LANES CLOSED AND DETOURED. TIME 
            APPROXIMATED FROM RADAR. 

0430 PM     TSTM WND DMG     WYOMISSING              40.33N  75.96W
05/15/2018                   BERKS              PA   911 CALL CENTER 

            TREE DOWN ON A HOUSE. 

0430 PM     TSTM WND DMG     1 WSW RASLEYTOWN        40.81N  75.29W
05/15/2018                   NORTHAMPTON        PA   NEWSPAPER       

            TREE DOWN ON A HOUSE IN PLAINFIELD TWP. 

0435 PM     TSTM WND DMG     GREEN POND              41.02N  74.48W
05/15/2018                   MORRIS             NJ   TRAINED SPOTTER 

            TREES DOWN, SOME ONTO HOMES. 

0435 PM     HAIL             WANTAGE                 41.24N  74.55W
05/15/2018  M0.50 INCH       SUSSEX             NJ   SOCIAL MEDIA    

0435 PM     TSTM WND DMG     PARSIPPANY              40.86N  74.43W
05/15/2018                   MORRIS             NJ   SOCIAL MEDIA    

            3 TREES UPROOTED IN THE AREA BETWEEN DENVILLE AND 
            PARSIPPANY. TIME ESTIMATED FROM RADAR. 

0435 PM     TSTM WND DMG     SAINT LAWRENCE          40.33N  75.87W
05/15/2018                   BERKS              PA   911 CALL CENTER 

            TREE DOWN ON A HOUSE. 

0436 PM     TSTM WND DMG     1 SSE HILLTOWN          40.91N  74.55W
05/15/2018                   MORRIS             NJ   DEPT OF HIGHWAYS

            DOWNED TREE AT THE MOUNT HOPE EXIT ON INTERSTATE 80. 
            EXIT RAMP CLOSED. TIME APPROXIMATED FROM RADAR. 

0437 PM     TSTM WND DMG     DUTTONVILLE             41.35N  74.69W
05/15/2018                   SUSSEX             NJ   TRAINED SPOTTER 

            MANY TREES DOWN AFTER HIGH WINDS. HEAVY RAIN AND 
            LIGHTNING. 

0439 PM     TSTM WND DMG     1 SSE FULLERTON         40.62N  75.48W
05/15/2018                   LEHIGH             PA   NEWSPAPER       

            DOWNED TREE AT SEVENTH STREET AND VIRGINIA AVENUE IN 
            WHITEHALL TWP. TIME ESTIMATED FROM RADAR. 

0439 PM     TSTM WND DMG     WASHINGTON TWP          40.78N  74.81W
05/15/2018                   MORRIS             NJ   NEWSPAPER       

            FALLEN TREE SMASHED A VEHICLE IN WASHINGTON TWP. TIME 
            ESTIMATED FROM RADAR. 

0440 PM     TSTM WND DMG     NORTH CATASAUQUA        40.66N  75.48W
05/15/2018                   NORTHAMPTON        PA   SOCIAL MEDIA    

            NUMEROUS TREES AND POWER LINES DOWN IN N CATASAUQUA. A 
            WIND GUST OF 57 MPH WAS ALSO MEAUSURED DURING THIS TIME. 
            TIME ESTIMATED FROM RADAR 

0441 PM     TSTM WND DMG     LAKE PARSIPPANY         40.85N  74.43W
05/15/2018                   MORRIS             NJ   DEPT OF HIGHWAYS

            DOWNED TREE ON INTERSTATE 287 NEAR EXIT 40. LANE 
            CLOSURES IN PLACE. TIME APPROXIMATED FROM RADAR. 

0441 PM     TSTM WND DMG     TABOR                   40.87N  74.48W
05/15/2018                   MORRIS             NJ   DEPT OF HIGHWAYS

            DOWNED TREE ON STATE HIGHWAY 53 NEAR FRONT STREET IN 
            DENVILLE TWP. ALL LANES CLOSED. TIME APPROXIMATED FROM 
            RADAR. 

0441 PM     TSTM WND DMG     PHILLIPSBURG            40.69N  75.18W
05/15/2018                   WARREN             NJ   SOCIAL MEDIA    

            NUMEROUS TREES DOWN IN PHILLIPSBURG. TIME APPROXIMATED 
            FROM RADAR. 

0442 PM     TSTM WND DMG     LITTLETON               40.84N  74.46W
05/15/2018                   MORRIS             NJ   DEPT OF HIGHWAYS

            DOWNED TREE ON U.S. HIGHWAY 202 NEAR STATE HIGHWAY 10 
            IN MORRIS PLAINS. ALL LANES CLOSED AND DETOURED. TIME 
            APPROXIMATED FROM RADAR. 

0442 PM     TSTM WND DMG     BOONTON                 40.91N  74.41W
05/15/2018                   MORRIS             NJ   SOCIAL MEDIA    

            TREES DOWN THROUGHOUT BOONTON. SEVERAL ROADS CLOSED. 
            TIME APPROXIMATED FROM RADAR. 

0442 PM     TSTM WND DMG     1 NE GRIESEMERSVILLE    40.60N  75.49W
05/15/2018                   LEHIGH             PA   NEWSPAPER       

            ROOF COLLAPSE FROM STRONG WINDS. 

0445 PM     TSTM WND GST     LOWER MACUNGIE TWP      40.52N  75.58W
05/15/2018  M68 MPH          LEHIGH             PA   TRAINED SPOTTER 

            WIND GUST OF 68 MPH MEASURED WITH HAND HELD 
            ANEMOMETER...HOWEVER THE DEVICE HAD NOT BEEN CALIBRATED 
            RECENTLY. TREE DAMAGE ALSO REPORTED 

0445 PM     TSTM WND DMG     LAKE HIAWATHA           40.88N  74.38W
05/15/2018                   MORRIS             NJ   SOCIAL MEDIA    

            LARGE TREE DOWN CRUSHING 2 CARS 

0446 PM     TSTM WND GST     1 S RUSCOMB MANOR TWP   40.41N  75.83W
05/15/2018  M55 MPH          BERKS              PA   MESONET         

            CWOP STATION REPORTS WIND GUST OF 55 MPH 

0446 PM     TSTM WND DMG     POHATCONG TWP           40.63N  75.17W
05/15/2018                   WARREN             NJ   SOCIAL MEDIA    

            NUMEROUS TREES, POWER LINES, AND UTILITY POLES DOWN 
            THROUGHOUT POHATCONG TWP. SEVERAL ROAD CLOSURES IN 
            PLACE. 

0449 PM     TSTM WND DMG     MALAPARDIS              40.83N  74.44W
05/15/2018                   MORRIS             NJ   DEPT OF HIGHWAYS

            DOWNED TREE ON INTERSTATE 287 NEAR EXIT 39. LANE 
            CLOSURES IN PLACE. TIME APPROXIMATED FROM RADAR. 

0450 PM     TSTM WND DMG     KNOWLTON TWP            40.93N  75.06W
05/15/2018                   WARREN             NJ   SOCIAL MEDIA    

            TREE DOWN ON I-80 EASTBOUND 

0450 PM     TSTM WND DMG     NORTH CATASAUQUA        40.66N  75.47W
05/15/2018                   NORTHAMPTON        PA   TRAINED SPOTTER 

            THREE-FOOT DIAMETER TREE FELL ONTO AND DAMAGED TWO 
            DUMPSTERS AND A FENCE. 

0451 PM     TSTM WND DMG     PINE BROOK              40.86N  74.34W
05/15/2018                   MORRIS             NJ   SOCIAL MEDIA    

            NUMEROUS TREES DOWN IN PINE BROOK. SEVERAL ROADS ARE 
            CLOSED. TIME APPROXIMATED FROM RADAR. 

0451 PM     TSTM WND DMG     HAMPTON                 40.71N  74.97W
05/15/2018                   HUNTERDON          NJ   SOCIAL MEDIA    

            MULTIPLE TREES AND POWER LINES DOWN. TIME ESTIMATED 
            FROM RADAR. 

0452 PM     TSTM WND GST     S ALLENTOWN             40.59N  75.48W
05/15/2018  M59 MPH          LEHIGH             PA   TRAINED SPOTTER 

            TRAINED SPOTTER REPORTS WIND GUST OF 59 MPH MEASURED 
            WITH A HANDHELD ANEMOMETER. PEA SIZE HAIL WAS ALSO 
            FALLING AT THE TIME 

0452 PM     HAIL             1 S ALLENTOWN           40.58N  75.48W
05/15/2018  E0.75 INCH       LEHIGH             PA   SOCIAL MEDIA    

            DIME SIZE HAIL IN S ALLENTOWN 

0455 PM     TSTM WND DMG     WYOMISSING              40.33N  75.96W
05/15/2018                   BERKS              PA   TRAINED SPOTTER 

            6 INCH DIAMTER TREE SNAPPED AT THE BASE. TIME ESTIMATED 
            FROM RADAR 

0457 PM     TSTM WND DMG     WEST READING            40.33N  75.95W
05/15/2018                   BERKS              PA   SOCIAL MEDIA    

            TREE DOWN ON A HOUSE. NO INJURIES REPORTED. TIME 
            ESTIMATED FROM RADAR. 

0459 PM     TSTM WND DMG     COLLEGE HEIGHTS         40.37N  75.89W
05/15/2018                   BERKS              PA   SOCIAL MEDIA    

            DOWNED TREES ON SKYLINE DRIVE NEAR MCKNIGHT GAP ROAD. 
            TIME ESTIMATED FROM RADAR. 

0459 PM     HAIL             BALLY                   40.40N  75.59W
05/15/2018  E1.00 INCH       BERKS              PA   SOCIAL MEDIA    

0500 PM     TSTM WND GST     LEBANON                 40.64N  74.84W
05/15/2018  M67 MPH          HUNTERDON          NJ   TRAINED SPOTTER 

0500 PM     TSTM WND GST     WEST LAWN               40.33N  75.99W
05/15/2018  E60 MPH          BERKS              PA   TRAINED SPOTTER 

            LARGE TREE DOWN IN PICTURE. 

0502 PM     TSTM WND DMG     PENNSIDE                40.34N  75.88W
05/15/2018                   BERKS              PA   SOCIAL MEDIA    

            DOWNED TREE DAMAGED A HOUSE. TIME ESTIMATED FROM RADAR. 

0504 PM     TSTM WND DMG     OLEY TWP                40.37N  75.78W
05/15/2018                   BERKS              PA   SOCIAL MEDIA    

            NUMEROUS TREES DOWN IN OLEY TOWNSHIP, WITH SEVERAL 
            ROADS CLOSED. TIME ESTIMATED FROM RADAR. 

0507 PM     TSTM WND DMG     WEST ROCKHILL TWP       40.37N  75.35W
05/15/2018                   BUCKS              PA   SOCIAL MEDIA    

            FALLEN TREES DAMAGED A HOUSE IN WEST ROCKHILL TWP. TIME 
            ESTIMATED FROM RADAR. 

0510 PM     TSTM WND DMG     DOUGLASSVILLE           40.26N  75.73W
05/15/2018                   BERKS              PA   TRAINED SPOTTER 

            TREES AND POWERLINES DOWN. 

0513 PM     TSTM WND GST     PORT READING            40.56N  74.25W
05/15/2018  M64 MPH          MIDDLESEX          NJ   TRAINED SPOTTER 

0514 PM     TSTM WND DMG     1 N SNOWDENVILLE        40.20N  75.60W
05/15/2018                   CHESTER            PA   BROADCAST MEDIA 

            REPORT OF TREES AND POWER LINES DOWN NEAR THE 
            INTERSECTION OF SAYLORS MILL RD AND EBELHARE RD 

0516 PM     TSTM WND GST     POTTSTOWN               40.25N  75.64W
05/15/2018  M81 MPH          MONTGOMERY         PA   TRAINED SPOTTER 

            MEASURED BY HOME ROOFTOP WEATHER STATION. TREE DAMAGE 
            AND ALSO SOME WINDOW DAMAGE TO A HOME. PROBABLE 
            MICROBURST. 

0517 PM     HAIL             POTTSTOWN               40.25N  75.64W
05/15/2018  M1.00 INCH       MONTGOMERY         PA   TRAINED SPOTTER 

            QUARTER SIZE HAIL LASTED FOR 8 MINUTES. 

0520 PM     HAIL             STOWE                   40.26N  75.68W
05/15/2018  E0.75 INCH       MONTGOMERY         PA   SOCIAL MEDIA    

0525 PM     TSTM WND DMG     PHOENIXVILLE            40.14N  75.52W
05/15/2018                   CHESTER            PA   BROADCAST MEDIA 

            TREE DOWN ON BRIDGE STREET. TIME ESTIMATED FROM RADAR 

0530 PM     TSTM WND DMG     PLYMOUTH MEETING        40.11N  75.28W
05/15/2018                   MONTGOMERY         PA   TRAINED SPOTTER 

            LARGE TREE LIMBS DOWN 

0532 PM     TSTM WND DMG     GRATERFORD              40.23N  75.45W
05/15/2018                   MONTGOMERY         PA   TRAINED SPOTTER 

            LARGE LIMB AND POWER LINES DOWN IN NEIGHBORHOOD. *EVENT 
            TIME CORRECTED* 

0534 PM     TSTM WND DMG     1 WSW HOLLOW WOODS      40.03N  75.27W
05/15/2018                   MONTGOMERY         PA   SOCIAL MEDIA    

            TREE DOWN ON ROYERSFORD ROAD NEAR SOUDER ROAD. TIME 
            APPROXIMATED BY RADAR. 

0537 PM     TSTM WND DMG     1 WNW CHESTERBROOK      40.08N  75.47W
05/15/2018                   CHESTER            PA   SOCIAL MEDIA    

            A COUPLE REPORTS OF DOWNED OR UPROOTED TREES IN VALLEY 
            FORGE AND CHESTERBROOK. TIME APPROXIMATED BASED ON 
            SOCIAL MEDIA POSTINGS AND RADAR. 

0540 PM     MARINE TSTM WIND PORT MONMOUTH           40.43N  74.10W
05/15/2018  M47 MPH          MONMOUTH           NJ   MESONET         

0545 PM     MARINE TSTM WIND MONMOUTH BEACH          40.34N  73.99W
05/15/2018  M47 MPH          MONMOUTH           NJ   MESONET         

0548 PM     TSTM WND GST     NORTHEAST PHILADELPHIA  40.08N  75.01W
05/15/2018  M49 MPH          PHILADELPHIA       PA   ASOS            

0548 PM     TSTM WND DMG     1 WNW RUSHLAND          40.26N  75.04W
05/15/2018                   BUCKS              PA   BROADCAST MEDIA 

            LARGE TREES UPROOTED NEAR SWAMP ROAD AND RUSHLAND ROAD 
            IN JAMISON. TIME ESTIMATED FROM RADAR. 

0552 PM     HAIL             EXTON                   40.03N  75.63W
05/15/2018  E0.75 INCH       CHESTER            PA   SOCIAL MEDIA    

0554 PM     TSTM WND DMG     PLYMOUTH VALLEY         40.13N  75.30W
05/15/2018                   MONTGOMERY         PA   SOCIAL MEDIA    

            LARGE TREE DOWN, DAMAGING A RESIDENTIAL PROPERTY, ON 
            MILL CREEK ROAD. TIME ESTIMATED BY RADAR. 

0555 PM     TSTM WND DMG     PLYMOUTH MEADOWS        40.13N  75.29W
05/15/2018                   MONTGOMERY         PA   SOCIAL MEDIA    

            SEVERAL TREES DOWN ON MALVERN ROAD. 

0555 PM     TSTM WND DMG     PLYMOUTH TWP            40.11N  75.30W
05/15/2018                   MONTGOMERY         PA   BROADCAST MEDIA 

            ROOF MATERIAL COMPLETELY BLOWN OFF A HOME. TIME 
            ESTIMATED FROM RADAR. 

0557 PM     TSTM WND DMG     SCUDDERS FALLS          40.26N  74.84W
05/15/2018                   MERCER             NJ   DEPT OF HIGHWAYS

            DOWNED TREE ON STATE HIGHWAY 29 NEAR UPPER FERRY ROAD. 
            LANE CLOSURES IN PLACE. 

0601 PM     TSTM WND GST     NEWTOWN SQUARE E        39.99N  75.38W
05/15/2018  M50 MPH          DELAWARE           PA   MESONET         

0601 PM     TSTM WND GST     LARCHMONT               39.99N  75.38W
05/15/2018  M50 MPH          DELAWARE           PA   MESONET         

            CWOP STATION REPORTS WIND GUST OF 50 MPH 

0601 PM     TSTM WND DMG     ABINGTON TWP            40.11N  75.11W
05/15/2018                   MONTGOMERY         PA   BROADCAST MEDIA 

            DOWNED TREE CLOSED SUSQUEHANNA ROAD BETWEEN VALLEY ROAD 
            AND RYDAL ROAD. TIME APPROXIMATED FROM RADAR. 

0604 PM     TSTM WND DMG     SOMERVILLE              40.05N  75.15W
05/15/2018                   PHILADELPHIA       PA   SOCIAL MEDIA    

            TREES DOWN ON OGONTZ AVENUE AND 66TH STREET. 

0610 PM     TSTM WND DMG     FOX CHASE               40.08N  75.08W
05/15/2018                   PHILADELPHIA       PA   BROADCAST MEDIA 

            TREE DOWN ON WIRES, FORCING CLOSURE OF A ROAD. TIME 
            ESTIMATED FROM RADAR. 

0617 PM     HAIL             FREEHOLD                40.26N  74.28W
05/15/2018  E1.00 INCH       MONMOUTH           NJ   TRAINED SPOTTER 

            HAIL UP TO QUARTER SIZE. 

0623 PM     TSTM WND DMG     TACONY                  40.03N  75.05W
05/15/2018                   PHILADELPHIA       PA   BROADCAST MEDIA 

            LARGE TREE DOWNED WITH MINOR DAMAGE TO A VEHICLE AND 
            SEVERE DAMAGE TO A PORCH. TIME ESTIMATED FROM RADAR. 

0628 PM     TSTM WND DMG     FORKED RIVER            39.83N  74.19W
05/15/2018                   OCEAN              NJ   SOCIAL MEDIA    

            OUTFLOW FROM STORMS BLEW DEBRIS ONTO A SHED, CAUSING IT 
            TO COLLAPSE. TIME ESTIMATED FROM RADAR. 

0700 PM     MARINE TSTM WIND 1 E CEDAR BEACH         39.87N  74.14W
05/15/2018  M45 MPH          OCEAN              NJ   MESONET         

0705 PM     HAIL             PINE HILL               39.79N  74.99W
05/15/2018  M0.88 INCH       CAMDEN             NJ   PUBLIC          

            NICKEL SIZED HAIL. 

0742 PM     FLOOD            1 NW CAMDEN             39.94N  75.12W
05/15/2018                   CAMDEN             NJ   SOCIAL MEDIA    

            RIVER LINE SERVICE SUSPENDED NEAR WALTER RAND 
            TRANSPORTATION CENTER OWING TO FLOODING. 


&&

EVENT NUMBER PHI1800824 PHI1800730 PHI1800724 PHI1800813 PHI1800765 
PHI1800722 PHI1800726 PHI1800786 PHI1800758 PHI1800759 PHI1800735 
PHI1800834 PHI1800723 PHI1800787 PHI1800769 PHI1800727 PHI1800725 
PHI1800729 PHI1800733 PHI1800790 PHI1800755 PHI1800736 PHI1800816 
PHI1800728 PHI1800763 PHI1800793 PHI1800779 PHI1800819 PHI1800823 
PHI1800734 PHI1800756 PHI1800784 PHI1800830 PHI1800731 PHI1800780 
PHI1800773 PHI1800835 PHI1800739 PHI1800753 PHI1800771 PHI1800805 
PHI1800806 PHI1800767 PHI1800795 PHI1800778 PHI1800782 PHI1800807 
PHI1800818 PHI1800743 PHI1800744 PHI1800777 PHI1800808 PHI1800774 
PHI1800732 PHI1800802 PHI1800825 PHI1800751 PHI1800785 PHI1800788 
PHI1800792 PHI1800783 PHI1800803 PHI1800817 PHI1800772 PHI1800776 
PHI1800741 PHI1800789 PHI1800775 PHI1800737 PHI1800794 PHI1800796 
PHI1800815 PHI1800738 PHI1800740 PHI1800750 PHI1800799 PHI1800797 
PHI1800831 PHI1800742 PHI1800764 PHI1800798 PHI1800800 PHI1800814 
PHI1800746 PHI1800770 PHI1800745 PHI1800748 PHI1800749 PHI1800754 
PHI1800747 PHI1800781 PHI1800757 PHI1800826 PHI1800832 PHI1800810 
PHI1800811 PHI1800760 PHI1800822 PHI1800829 PHI1800827 PHI1800768 
PHI1800836 PHI1800804 PHI1800762 PHI1800766 PHI1800833 PHI1800828 
PHI1800821 PHI1800761 PHI1800820 PHI1800801 PHI1800812 PHI1800809 
PHI1800791  


$$

STAFF