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
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An area of low pressure began to explosively intensify as it moved over the mid-Atlantic on 7 February 2020, with continued rapid strengthening occurring as the low moved northeast towards the Gulf of Maine. A warm front associated with the low pushed through the mid-Atlantic in the pre-dawn hours of 7 February, while a strong cold front approached by late morning. Ahead of the cold front, an unusually warm winter air mass overspread the mid-Atlantic. A small amount of surface-based instability developed ahead of the cold front. However, exceptionally strong wind fields were present ahead of the rapidly deepening low. Combined with the strong dynamic forcing and lift associated with the low, a line of convection developed over the mid-Atlantic early on 7 February and led to an anomalous wintertime severe weather outbreak. Storms were low topped and produced limited lightning, but acted to transport downward the strong winds present just above the surface. Widespread damaging wind gusts occurred as the storms moved through. In addition, an area of rotation within the squall line produced a brief tornado in Cecil County, MD. A couple of other tornadoes had previously formed further southwest in the WFO Baltimore/Washington CWA. The line of storms produced severe wind gusts all the way to the coast of New Jersey, before rapidly weakening as it moved further northeast and away from the already limited instability. |
 Composite radar loop at one hour intervals of the 7 February 2020 squall line. |
Synoptic Overview at 12z 7 Feb 2020 (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 8 Feb 2020 (courtesy of SPC)
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| Figure 7: 250-mb analysis | Figure 8: 300-mb analysis | Figure 9: 500-mb analysis |
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| 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: 12z surface map | Figure 14: 15z surface map | Figure 15: 18z surface map |
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| Figure 16: 21z surface map | Figure 17: 00z surface map | Figure 18: 03z surface map |
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| Figure 19: 12z Wallops Island, VA sounding | Figure 20: 12z Sterling, VA sounding | Figure 21: 12z Islip, NY sounding |
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| Figure 22: 00z Wallops Island, VA sounding | Figure 23: 00z Sterling, VA sounding | Figure 24: 00z Islip, NY sounding |
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| Figure 1: National Preliminary Reports 12z 7 Feb 2020 to 12z 8 Feb 2020 | Figure 2: Zoomed Preliminary Reports for the same period. | Figure 3: Prelim Reports vs. 0600z SPC Convective Outlook |
NWUS51 KPHI 072057
LSRPHI
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
357 PM EST FRI FEB 7 2020
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0906 AM TSTM WND DMG 1 W WILLOWDALE 39.87N 75.73W
02/07/2020 CHESTER PA COUNTY OFFICIAL
DOWNED TREE ON WIRES NEAR THE INTERSECTION
OF WOLLASTON ROAD AND STREET ROAD. STRONG
GUSTS WELL IN ADVANCE OF PRECIPITATION.
0912 AM TSTM WND DMG 2 S KENNETT SQUARE 39.81N 75.71W
02/07/2020 CHESTER PA COUNTY OFFICIAL
DOWNED TREE NEAR THE INTERSECTION OF KAOLIN
ROAD AND ROUND HILL ROAD. STRONG WINDS WELL
IN ADVANCE OF PRECIPITATION.
0922 AM TSTM WND DMG 1 NNE BRANDAMORE 40.06N 75.81W
02/07/2020 CHESTER PA PUBLIC
SEVERAL POWER LINES DOWN NEAR MANOR ROAD AND
HORSESHOE PIKE. STRONG WINDS WELL IN ADVANCE
OF PRECIPITATION.
0923 AM TSTM WND DMG 2 SE PORT DEPOSIT 39.59N 76.07W
02/07/2020 CECIL MD DEPT OF HIGHWAYS
WIND BLOWN DEBRIS IN THE ROAD ON I-95 NORTH
OF EXIT 93. TIME ESTIMATED FROM RADAR.
0924 AM TSTM WND DMG ROCK HALL 39.14N 76.24W
02/07/2020 KENT MD FIRE DEPT/RESCUE
REPORTS OF DOWNED TREES IN THE AREA OF ROCK
HALL ROAD. TIME ESTIMATED FROM RADAR.
0926 AM TSTM WND DMG 2 SW SPRING TWP 40.30N 76.03W
02/07/2020 BERKS PA UTILITY COMPANY
DOWNED TREE ON WIRES. TIME ESTIMATED FROM
RADAR.
0928 AM TSTM WND DMG 1 SE LINCOLN UNIVERSITY 39.80N 75.91W
02/07/2020 CHESTER PA UTILITY COMPANY
DOWNED POWER LINES FROM STRONG WINDS NEAR
ELKDALE ROAD. TIME ESTIMATED FROM RADAR.
0930 AM TSTM WND DMG 1 SSW RIDGELY 38.94N 75.89W
02/07/2020 CAROLINE MD DEPT OF HIGHWAYS
DOWNED UTILITY ON STATE HIGHWAY 480 AT
SUNSET BOULEVARD. TIME ESTIMATED FROM RADAR.
0930 AM TSTM WND DMG SPRING TWP 40.32N 76.01W
02/07/2020 BERKS PA FIRE DEPT/RESCUE
SEVERAL TREES AND POWER LINES DOWN.
0930 AM TSTM WND DMG 1 NNW HIGHLAND TWP. 39.94N 75.87W
02/07/2020 CHESTER PA COUNTY OFFICIAL
DOWNED TREE AND WIRES NEAR THE INTERSECTION
OF FIVE POINTS ROAD AND GLENROSE ROAD. TIME
ESTIMATED FROM RADAR.
0930 AM TSTM WND DMG 1 NNW DENTON 38.90N 75.84W
02/07/2020 CAROLINE MD EMERGENCY MNGR
SIGNIFICANT STRUCTURAL DAMAGE TO A BARN.
TIME ESTIMATED FROM RADAR.
0932 AM TSTM WND DMG LORANE 40.29N 75.85W
02/07/2020 BERKS PA FIRE DEPT/RESCUE
DOWNED TREE BLOCKING THE ROAD NEAR THE
INTERSECTION OF LORANE ROAD AND AHRENS ROAD.
TIME ESTIMATED FROM RADAR.
0935 AM TSTM WND DMG 2 NNW HAZLETTVILLE 39.15N 75.66W
02/07/2020 KENT DE DEPT OF HIGHWAYS
HALLTOWN RD CLOSED AT BRITTANY LN DUE TO
WIRES DOWN IN THE ROADWAY. TIME ESTIMATED
FROM RADAR.
0939 AM TORNADO 1 SSW BARKSDALE 39.65N 75.82W
02/07/2020 CECIL MD NWS STORM SURVEY
AN EF-1 TORNADO BRIEFLY TOUCHED DOWN NEAR
THE ELK MILLS QUARRY IN CECIL COUNTY,
MARYLAND. THE TORNADO UPROOTED AND SNAPPED
NUMEROUS SOFTWOOD TREES JUST EAST AND NORTH
OF THE QUARRY NEAR THE INTERSECTION OF ELK
MILLS ROAD, APPLETON ROAD, AND FLETCHWOOD
ROAD. A FEW HARDWOOD AND SOFTWOOD TREES WERE
UPROOTED ON NEARBY RESIDENTIAL PROPERTIES.
THE TORNADO CONTINUED EAST ALONG FLETCHWOOD
ROAD PASSING OVER SOME INDUSTRIAL BUILDINGS
TOWARD THE PINE HILL APARTMENT COMPLEX. AT
THE APARTMENT COMPLEX, NUMEROUS PINE TREES
WERE UPROOTED OR SNAPPED. THE TORNADO THEN
DISSIPATED AS IT CONTINUED EAST AWAY FROM
THE APARTMENT COMPLEX. THANKFULLY, NO
SIGNIFICANT STRUCTURAL DAMAGE OCCURRED AND
NO INJURIES OR FATALITIES OCCURRED AS A
RESULT OF THIS TORNADO.
0940 AM TSTM WND DMG BARKSDALE 39.67N 75.81W
02/07/2020 CECIL MD 911 CALL CENTER
SEVERAL REPORTS OF DOWNED TREES. TIME
ESTIMATED FROM RADAR.
0940 AM TSTM WND GST CLAYTON 39.29N 75.63W
02/07/2020 M58 MPH KENT DE MESONET
0945 AM TSTM WND DMG 3 WNW FELTON 39.02N 75.62W
02/07/2020 KENT DE UTILITY COMPANY
DOWNED TREE ON WIRES.
0945 AM TSTM WND DMG EASTBURN HEIGHTS 39.70N 75.68W
02/07/2020 NEW CASTLE DE TRAINED SPOTTER
PHOTO OF A TREE DOWN ONTO A DECK, DESTROYING
PART OF A FENCE. TIME ESTIMATED FROM RADAR.
0945 AM TSTM WND DMG 1 SW MARSHALLTON 39.72N 75.66W
02/07/2020 NEW CASTLE DE PUBLIC
MULTIPLE TREES DOWN ON TELEGRAPH RD. TIME
ESTIMATED FROM RADAR.
0945 AM TSTM WND DMG WYOMING 39.12N 75.56W
02/07/2020 KENT DE TRAINED SPOTTER
LOSS OF STOCKADE FENCING. TIME ESTIMATED
FROM RADAR.
0946 AM TSTM WND DMG 2 WSW EASTBURN HEIGHTS 39.70N 75.71W
02/07/2020 NEW CASTLE DE NEWSPAPER
DOWNED TREE INTO A HOUSE ON BREWSTER DRIVE.
TIME ESTIMATED FROM RADAR.
0946 AM TSTM WND DMG 2 ENE KENNETT SQUARE 39.86N 75.68W
02/07/2020 CHESTER PA UTILITY COMPANY
DOWNED POWER LINES FROM STRONG WINDS NEAR
CANTERBURY DRIVE. TIME ESTIMATED FROM RADAR.
0946 AM TSTM WND DMG 2 NE HAZLETTVILLE 39.14N 75.62W
02/07/2020 KENT DE UTILITY COMPANY
POWER POLE SNAPPED FROM STRONG WIND. TIME
ESTIMATED FROM RADAR.
0948 AM TSTM WND DMG 2 WSW HARRINGTON 38.91N 75.61W
02/07/2020 KENT DE UTILITY COMPANY
DOWNED POWER LINES FROM STRONG WINDS. TIME
ESTIMATED FROM RADAR.
0948 AM TSTM WND DMG 3 NNE UPPER MACUNGIE TW 40.61N 75.59W
02/07/2020 LEHIGH PA UTILITY COMPANY
DOWNED TREE ON WIRES. TIME ESTIMATED FROM
RADAR.
0950 AM TSTM WND DMG 1 ENE EASTBURN HEIGHTS 39.71N 75.67W
02/07/2020 NEW CASTLE DE NEWSPAPER
DOWNED TREES ON CAR AND RESIDENCES IN MURRAY
MANOR. TIME ESTIMATED FROM RADAR.
0950 AM TSTM WND DMG 1 W STANTON 39.72N 75.66W
02/07/2020 NEW CASTLE DE FIRE DEPT/RESCUE
SEVERAL REPORTS OF TREES AND WIRES DOWN NEAR
TELEGRAPH ROAD, INCLUDING A TREE INTO A
HOUSE. TIME ESTIMATED FROM RADAR.
0950 AM TSTM WND DMG PUGHTOWN 40.17N 75.67W
02/07/2020 CHESTER PA UTILITY COMPANY
SEVERAL REPORTS OF TREES AND POWER LINES
DOWN NEAR PUGHTOWN, ROYERSFORD,
PHOENIXVILLE, AND ST. PETERS. TIME ESTIMATED
FROM RADAR.
0951 AM TSTM WND DMG 1 N EAST BRADFORD TWP 39.97N 75.64W
02/07/2020 CHESTER PA PUBLIC
DOWNED WIRES NEAR COPELAND SCHOOL ROAD AND
KENMARA DRIVE.
0951 AM TSTM WND DMG 2 WSW FELTON 39.00N 75.62W
02/07/2020 KENT DE UTILITY COMPANY
DOWNED TREE AND WIRES. TIME ESTIMATED FROM
RADAR.
0952 AM TSTM WND DMG HARRINGTON 38.92N 75.58W
02/07/2020 KENT DE PUBLIC
ROOF BLOWN OFF A TRAILER. TIME ESTIMATED
FROM RADAR.
0952 AM TSTM WND GST 3 WSW MOUNT PLEASANT 39.49N 75.76W
02/07/2020 M61 MPH NEW CASTLE DE PUBLIC
0952 AM TSTM WND DMG WESTFIELD 39.72N 75.64W
02/07/2020 NEW CASTLE DE NEWSPAPER
TREE INTO A HOUSE ON REDWOOD AVENUE. TIME
ESTIMATED FROM RADAR.
0952 AM TSTM WND DMG 4 WNW SEAFORD 38.66N 75.68W
02/07/2020 SUSSEX DE UTILITY COMPANY
DOWNED POWER LINES FROM STRONG WINDS. TIME
ESTIMATED FROM RADAR.
0954 AM TSTM WND DMG 1 NE BIRMINGHAM TWP 39.92N 75.58W
02/07/2020 CHESTER PA UTILITY COMPANY
DOWNED POWER LINES FROM STRONG WINDS NEAR
BRIDLEWOOD BOULEVARD. TIME ESTIMATED FROM
RADAR.
0954 AM TSTM WND DMG 1 ESE TYBROOK 39.75N 75.62W
02/07/2020 NEW CASTLE DE FIRE DEPT/RESCUE
SEVERAL REPORTS OF DOWNED TREES AND WIRES.
TIME ESTIMATED FROM RADAR.
0955 AM TSTM WND GST 1 NE MAGNOLIA 39.09N 75.46W
02/07/2020 M66 MPH KENT DE MESONET
0956 AM TSTM WND DMG 2 SW MAGNOLIA 39.06N 75.50W
02/07/2020 KENT DE UTILITY COMPANY
DOWNED TREE AND POWER POLE. TIME ESTIMATED
FROM RADAR.
1000 AM TSTM WND GST SHELLBURNE 39.78N 75.51W
02/07/2020 M59 MPH NEW CASTLE DE MESONET
1000 AM TSTM WND GST 3 E HIGHLAND ACRES 39.13N 75.47W
02/07/2020 M59 MPH KENT DE ASOS
1002 AM TSTM WND DMG ASHBOURNE HILLS 39.80N 75.47W
02/07/2020 NEW CASTLE DE FIRE DEPT/RESCUE
SEVERAL REPORTS OF DOWNED TREES IN THE AREA.
TIME ESTIMATED FROM RADAR.
1002 AM TSTM WND DMG 1 ENE ASHBOURNE HILLS 39.81N 75.46W
02/07/2020 NEW CASTLE DE NEWSPAPER
DOWNED TREE BLOCKING INTERSTATE 495 NEAR THE
PENNSYLVANIA STATE LINE. TIME ESTIMATED FROM
RADAR.
1002 AM TSTM WND DMG 1 N TRAINER 39.84N 75.40W
02/07/2020 DELAWARE PA DEPT OF HIGHWAYS
TREE DOWN ON I-95. TIME ESTIMATED FROM
RADAR.
1004 AM TSTM WND DMG 2 SSW SKIPPACK 40.19N 75.40W
02/07/2020 MONTGOMERY PA UTILITY COMPANY
SEVERAL REPORTS OF POWER LINES DOWN NEAR
EVANSBURG STATE PARK. TIME ESTIMATED FROM
RADAR.
1004 AM TSTM WND DMG 4 E SEAFORD 38.65N 75.54W
02/07/2020 SUSSEX DE UTILITY COMPANY
DOWNED TREES AND WIRES IN THE AREA. TIME
ESTIMATED FROM RADAR.
1005 AM TSTM WND GST 2 SSE GREENWOOD 38.78N 75.58W
02/07/2020 M64 MPH SUSSEX DE MESONET
1006 AM TSTM WND DMG 1 NNW ASTON TWP. 39.88N 75.43W
02/07/2020 DELAWARE PA LAW ENFORCEMENT
DOWNED TREES CLOSED PENNELL ROAD BETWEEN
MOUNT ALVERSON AND GLENDALE. TIME ESTIMATED
FROM RADAR.
1006 AM TSTM WND DMG 5 SSW ELLENDALE 38.74N 75.45W
02/07/2020 SUSSEX DE UTILITY COMPANY
DOWNED TREES AND WIRES IN THE AREA. TIME
ESTIMATED FROM RADAR.
1006 AM TSTM WND DMG LOWER CHICHESTER TWP. 39.82N 75.43W
02/07/2020 DELAWARE PA PUBLIC
ROOF BLOWN OFF A BUILDING. TIME ESTIMATED
FROM RADAR.
1006 AM TSTM WND DMG 1 W CHESTER TWP 39.84N 75.40W
02/07/2020 DELAWARE PA COUNTY OFFICIAL
DOWNED TREE AND WIRES NEAR FORWOOD STREET.
TIME ESTIMATED FROM RADAR.
1007 AM TSTM WND DMG 2 SE KULPSVILLE 40.23N 75.32W
02/07/2020 MONTGOMERY PA TRAINED SPOTTER
SEVERAL LARGE TREES SNAPPED OR UPROOTED NEAR
THE BORDER OF UPPER GWYNEDD AND TOWAMENCIN
TWPS. MULTIPLE PROPERTIES DAMAGED DUE TO
DOWNED TREES AND LIMBS. TIME ESTIMATED FROM
RADAR.
1007 AM TSTM WND DMG 1 N BROOMALL 39.99N 75.36W
02/07/2020 DELAWARE PA DEPT OF HIGHWAYS
DOWNED UTILITY ON PA-320. TIME ESTIMATED
FROM RADAR.
1008 AM TSTM WND DMG 1 NNW CHESTER TWP 39.85N 75.39W
02/07/2020 DELAWARE PA UTILITY COMPANY
DOWNED TREES AND WIRES NEAR INCINERATOR
ROAD. TIME ESTIMATED FROM RADAR.
1008 AM TSTM WND DMG LANSDALE 40.24N 75.28W
02/07/2020 MONTGOMERY PA NEWSPAPER
TREES AND POWER LINES DOWN IN LANSDALE. TIME
ESTIMATED FROM RADAR.
1009 AM TSTM WND DMG MILTON 38.78N 75.31W
02/07/2020 SUSSEX DE PUBLIC
2 LARGE TREES DOWN AT A RESIDENCE. REPORT
VIA SOCIAL MEDIA. TIME ESTIMATED FROM RADAR.
1010 AM TSTM WND DMG 4 S MILLVILLE 38.49N 75.13W
02/07/2020 SUSSEX DE UTILITY COMPANY
TREE INTO A HOUSE. TIME ESTIMATED FROM
RADAR.
1010 AM TSTM WND DMG ROXANA 38.50N 75.17W
02/07/2020 SUSSEX DE LAW ENFORCEMENT
TRAILER SPLIT IN HALF BY FALLEN TREE. TIME
ESTIMATED FROM RADAR.
1010 AM TSTM WND DMG UPPER GWYNEDD 40.21N 75.29W
02/07/2020 MONTGOMERY PA PUBLIC
REPORTS OVER SOCIAL MEDIA WITH PHOTOS OF
MULTIPLE TREES DOWN. TIME ESTIMATED FROM
RADAR.
1010 AM TSTM WND DMG 1 W EDDYSTONE 39.86N 75.36W
02/07/2020 DELAWARE PA COUNTY OFFICIAL
DOWNED TELEPHONE POLE FROM STRONG WINDS.
TIME ESTIMATED FROM RADAR.
1010 AM TSTM WND DMG 1 E MILLSBORO 38.59N 75.29W
02/07/2020 SUSSEX DE LAW ENFORCEMENT
TREE ON ROOF IN RIVER ROAD. TIME ESTIMATED
FROM RADAR.
1012 AM TSTM WND DMG HARRISON TWP 39.76N 75.26W
02/07/2020 GLOUCESTER NJ PUBLIC
MPING REPORT.
1012 AM TSTM WND DMG 1 ESE DELPS 40.80N 75.44W
02/07/2020 NORTHAMPTON PA UTILITY COMPANY
DOWNED TREE ON WIRES. TIME ESTIMATED FROM
RADAR.
1012 AM TSTM WND DMG 1 NW GEORGETOWN 38.70N 75.40W
02/07/2020 SUSSEX DE PUBLIC
DAMAGE TO BILLBOARDS, POWER LINES, AND
TRAFFIC SIGNALS FROM STRONG WINDS IN THE
GEORGETOWN AREA. TIME ESTIMATED FROM RADAR.
1013 AM TSTM WND DMG MILLVILLE 39.40N 75.04W
02/07/2020 CUMBERLAND NJ BROADCAST MEDIA
TREES DOWN AND FENCES BLOWN OVER NEAR
MILLVILLE. TIME ESTIMATED FROM RADAR.
1015 AM TSTM WND GST 3 ENE SELBYVILLE 38.48N 75.18W
02/07/2020 M63 MPH SUSSEX DE MESONET
1015 AM TSTM WND GST FORTESCUE 39.24N 75.18W
02/07/2020 M60 MPH CUMBERLAND NJ MESONET
1015 AM TSTM WND DMG 2 NW STOCKLEY 38.66N 75.35W
02/07/2020 SUSSEX DE LAW ENFORCEMENT
TREE FELL ON STRUCTURE, TIME ESTIMATED FROM
RADAR.
1015 AM TSTM WND DMG DAGSBORO 38.55N 75.25W
02/07/2020 SUSSEX DE LAW ENFORCEMENT
POLES DOWN ON MAIN STREET, TIME ESTIMATED
FROM RADAR.
1016 AM TSTM WND DMG 1 NE SHARON HILL 39.91N 75.26W
02/07/2020 DELAWARE PA COUNTY OFFICIAL
DOWNED TREES ON VEHICLES NEAR POPLAR STREET
AND WOODLAND TERRACE. TIME ESTIMATED FROM
RADAR.
1017 AM TSTM WND GST PHILADELPHIA INTERNATIO 39.88N 75.23W
02/07/2020 M49 MPH PHILADELPHIA PA ASOS
KPHL ASOS.
1018 AM TSTM WND DMG 1 W HORSHAM TWP 40.21N 75.21W
02/07/2020 MONTGOMERY PA COUNTY OFFICIAL
DOWNED TREE NEAR THE INTERSECTION OF CEDAR
HILL ROAD AND STONGS LANE. TIME ESTIMATED
FROM RADAR.
1018 AM TSTM WND DMG 3 WSW MALAGA 39.56N 75.10W
02/07/2020 SALEM NJ UTILITY COMPANY
DOWNED TREES AND WIRES NEAR CROW POND ROAD.
TIME ESTIMATED FROM RADAR.
1018 AM TSTM WND DMG 1 NNW PHILADELPHIA INTE 39.88N 75.23W
02/07/2020 PHILADELPHIA PA UTILITY COMPANY
DOWNED POWER LINES FROM STRONG WINDS NEAR
PROVINCE ISLAND. TIME ESTIMATED FROM RADAR.
1020 AM TSTM WND DMG 1 SE DAGSBORO 38.54N 75.23W
02/07/2020 SUSSEX DE LAW ENFORCEMENT
TREE DOWN ON STRUCTURE, TIME ESTIMATED FROM
RADAR.
1020 AM TSTM WND DMG 1 NNW MANTUA 39.81N 75.18W
02/07/2020 GLOUCESTER NJ NWS EMPLOYEE
UPROOTED TREE ON THE NEW JERSEY TURNPIKE.
TIME ESTIMATED FROM RADAR.
1020 AM TSTM WND GST 4 S INDIAN BEACH 38.63N 75.07W
02/07/2020 M59 MPH SUSSEX DE MESONET
1026 AM TSTM WND GST 2 WNW LEWES 38.79N 75.16W
02/07/2020 M70 MPH SUSSEX DE MESONET
WEATHERFLOW SITE XLEW.
1026 AM TSTM WND DMG BUCKINGHAM TWP 40.33N 75.06W
02/07/2020 BUCKS PA UTILITY COMPANY
SEVERAL REPORTS OF POWER OUTAGES IN
BUCKINGHAM, PINEVILLE, AND LAHASKA AREAS.
TIME ESTIMATED FROM RADAR.
1026 AM TSTM WND DMG 1 WSW SUMMERDALE 40.03N 75.11W
02/07/2020 PHILADELPHIA PA UTILITY COMPANY
DOWNED POWER LINES FROM STRONG WINDS NEAR
WHITAKER AVENUE. TIME ESTIMATED FROM RADAR.
1028 AM TSTM WND DMG GLOUCESTER CITY 39.89N 75.12W
02/07/2020 CAMDEN NJ UTILITY COMPANY
DOWNED TREES AND POWER LINES FROM STRONG
WINDS. TIME ESTIMATED FROM RADAR.
1028 AM TSTM WND DMG 4 E ESTELL MANOR 39.37N 74.76W
02/07/2020 ATLANTIC NJ DEPT OF HIGHWAYS
DOWNED TREE AND WIRES ON NJ-50 SOUTHBOUND
NORTH OF HONEST JOHN RD. ALL LANES CLOSED.
TIME ESTIMATED FROM RADAR.
1028 AM TSTM WND DMG 1 E ABINGTON 40.12N 75.11W
02/07/2020 MONTGOMERY PA COUNTY OFFICIAL
DOWNED TREE BLOCKING THE ROAD NEAR THE
INTERSECTION OF HUNTINGDON ROAD AND EDMUND
ROAD.
1030 AM TSTM WND GST CAPE MAY HARBOR 38.95N 74.89W
02/07/2020 M73 MPH CAPE MAY NJ MESONET
CAPN4 HADS GAUGE.
1030 AM TSTM WND DMG MAYS LANDING 39.45N 74.73W
02/07/2020 ATLANTIC NJ PUBLIC
REPORT VIA SOCIAL MEDIA WITH PHOTOS. DAMAGE
TO A CARPORT AND FENCING.
1030 AM TSTM WND DMG NEWTOWN 40.23N 74.94W
02/07/2020 BUCKS PA PUBLIC
TREE DOWN IN NEWTOWN. TIME ESTIMATED FROM
RADAR.
1030 AM TSTM WND DMG VILLAS 39.03N 74.93W
02/07/2020 CAPE MAY NJ AMATEUR RADIO
TREE DOWN ON A HOUSE ON PACIFIC AVE.
1030 AM TSTM WND DMG HAMMONTON 39.64N 74.80W
02/07/2020 ATLANTIC NJ BROADCAST MEDIA
LARGE TREE DOWN ONTO POWER LINES ACROSS
CENTRAL AVE. REPORT VIA SOCIAL MEDIA WITH A
PHOTO. TIME ESTIMATED FROM RADAR.
1032 AM TSTM WND DMG 1 NNW TINICUM TWP 40.48N 75.11W
02/07/2020 BUCKS PA UTILITY COMPANY
DOWNED TREES FROM STRONG WINDS. TIME
ESTIMATED FROM RADAR.
1032 AM TSTM WND DMG 1 W GREEN CREEK 39.04N 74.92W
02/07/2020 CAPE MAY NJ AMATEUR RADIO
WIRES DOWN ON LAFAYETTE ST.
1032 AM TSTM WND DMG SOMERTON 40.12N 75.01W
02/07/2020 PHILADELPHIA PA UTILITY COMPANY
SEVERAL REPORTS OF POWER LINES DOWN NEAR
SOMERTON, BUSTLETON, AND HUNTINGDON VALLEY.
TIME ESTIMATED FROM RADAR.
1033 AM TSTM WND DMG UPPER TWP 39.26N 74.67W
02/07/2020 CAPE MAY NJ PUBLIC
REPORT OF A TREE DOWN ACROSS ROUTE 9 AND
TRAFFIC LIGHTS DOWN ON CARS IN UPPER TWP.
TIME ESTIMATED FROM RADAR.
1034 AM TSTM WND DMG 1 SSW WEST HADDONFIELD 39.89N 75.05W
02/07/2020 CAMDEN NJ UTILITY COMPANY
DOWNED TREE ON WIRES NEAR KNOLL TOP LANE.
TIME ESTIMATED FROM RADAR.
1035 AM TSTM WND DMG 1 S MOORESTOWN 39.96N 74.94W
02/07/2020 BURLINGTON NJ DEPT OF HIGHWAYS
TRAFFIC SIGNAL DOWN ON NJ-38 WESTBOUND EAST
OF FELLOWSHIP RD. TIME ESTIMATED FROM RADAR.
1036 AM TSTM WND DMG 1 S SERGEANTSVILLE 40.43N 74.94W
02/07/2020 HUNTERDON NJ UTILITY COMPANY
DOWNED TREES AND WIRES NEAR THE INTERSECTION
OF SANDY RIDGE ROAD AND RITTENHOUSE ROAD.
TIME ESTIMATED FROM RADAR.
1038 AM TSTM WND DMG 1 NW MEDFORD TWP. 39.91N 74.83W
02/07/2020 BURLINGTON NJ PUBLIC
REPORT FROM MPING: 1-INCH TREE LIMBS BROKEN;
SHINGLES BLOWN OFF.
1038 AM TSTM WND DMG 1 SE LAMBERTVILLE 40.36N 74.94W
02/07/2020 HUNTERDON NJ UTILITY COMPANY
DOWNED TREE AND WIRES NEAR LINCOLN AVENUE
AND STUDDIFORD STREET. TIME ESTIMATED FROM
RADAR.
1039 AM TSTM WND GST 2 E BURLINGTON 40.08N 74.82W
02/07/2020 M52 MPH BURLINGTON NJ NWS EMPLOYEE
TIME ESTIMATED FROM RADAR.
1040 AM TSTM WND GST 1 NNW SEA ISLE CITY 39.17N 74.70W
02/07/2020 M61 MPH ANZ453 NJ MESONET
WEATHERFLOW SENSOR.
1040 AM TSTM WND DMG 2 NW WRIGHTSTOWN 40.06N 74.65W
02/07/2020 BURLINGTON NJ DEPT OF HIGHWAYS
DOWNED TREE ON NJ-68 SOUTHBOUND. ALL LANES
CLOSED AND DETOURED. TIME ESTIMATED FROM
RADAR.
1040 AM TSTM WND GST 2 SW RANCOCAS 39.98N 74.90W
02/07/2020 M61 MPH BURLINGTON NJ MESONET
NJWXNET SENSOR.
1040 AM TSTM WND GST 4 SE SAND BROOK 40.43N 74.87W
02/07/2020 M54 MPH HUNTERDON NJ PUBLIC
TIME ESTIMATED FROM RADAR. SOME SMALL TREE
LIMBS DOWN.
1040 AM TSTM WND DMG CROYDON 40.09N 74.90W
02/07/2020 BUCKS PA UTILITY COMPANY
A FEW REPORTS OF POWER LINES DOWN FROM
STRONG WINDS IN THE CROYDON AREA. TIME
ESTIMATED FROM RADAR.
1040 AM TSTM WND DMG 1 S MOORESTOWN 39.96N 74.94W
02/07/2020 BURLINGTON NJ DEPT OF HIGHWAYS
DOWNED TRAFFIC SIGNAL FROM STRONG WINDS.
TIME ESTIMATED FROM RADAR.
1042 AM TSTM WND DMG 2 WNW COLUMBUS 40.09N 74.75W
02/07/2020 BURLINGTON NJ DEPT OF HIGHWAYS
DOWNED TREE ON I-295 SOUTHBOUND NORTH OF
EXIT 52. TIME ESTIMATED FROM RADAR.
1042 AM TSTM WND GST MERCER COUNTY AIRPORT 40.28N 74.82W
02/07/2020 M64 MPH MERCER NJ ASOS
KTTN ASOS.
1042 AM TSTM WND DMG NEWARK 39.68N 75.76W
02/07/2020 NEW CASTLE DE PUBLIC
SEVERAL REPORTS OF POWER LINES DOWN IN
NEWARK.
1043 AM TSTM WND DMG 2 N PENNINGTON 40.36N 74.80W
02/07/2020 MERCER NJ DEPT OF HIGHWAYS
DOWNED TREE ON NJ 31 BOTH DIRECTIONS NORTH
OF CR-612. ALL LANES CLOSED AND DETOURED.
TIME ESTIMATED FROM RADAR.
1044 AM TSTM WND DMG 2 W MCPHERSON 40.61N 74.88W
02/07/2020 HUNTERDON NJ DEPT OF HIGHWAYS
DOWNED TREE ON NJ-31 NORTHBOUND NORTH OF CR
623. TIME ESTIMATED FROM RADAR.
1046 AM TSTM WND DMG 2 SW PORT REPUBLIC 39.52N 74.52W
02/07/2020 ATLANTIC NJ PUBLIC
DOWNED TREE LIMBS AND POWER LINES. MPING
REPORT. TIME ESTIMATED FROM RADAR.
1048 AM TSTM WND DMG 1 SSW YARDVILLE 40.16N 74.68W
02/07/2020 BURLINGTON NJ PUBLIC
DOWNED TREE LIMBS FROM STRONG WINDS. MPING
REPORT. TIME ESTIMATED FROM RADAR.
1050 AM TSTM WND GST INDIAN BEACH 38.68N 75.08W
02/07/2020 M59 MPH SUSSEX DE MESONET
WEATHERFLOW SENSOR.
1050 AM TSTM WND DMG GOSHEN 39.14N 74.85W
02/07/2020 CAPE MAY NJ AMATEUR RADIO
TREE DOWN ACROSS THE ROAD ON GOSHEN RD.
1054 AM TSTM WND DMG 2 W NORTH PRINCETON 40.37N 74.69W
02/07/2020 MERCER NJ LAW ENFORCEMENT
GREAT ROAD CLOSED BETWEEN STUART ROAD AND
PRINCETON DAY SCHOOL FROM A POLE AND WIRES
DOWN. TIME ESTIMATED FROM RADAR.
1056 AM TSTM WND DMG 1 SSE ROCKY HILL 40.38N 74.62W
02/07/2020 MERCER NJ UTILITY COMPANY
DOWNED TREES AND WIRES NEAR WINDROW DRIVE.
TIME ESTIMATED FROM RADAR.
1057 AM TSTM WND DMG 3 S BEDMINSTER TWP 40.64N 74.64W
02/07/2020 SOMERSET NJ DEPT OF HIGHWAYS
DOWNED TREE ON I-78 EASTBOUND EAST OF EXIT
29. TIME ESTIMATED FROM RADAR.
1100 AM TSTM WND GST 5 SE MYSTIC ISLAND 39.51N 74.32W
02/07/2020 M60 MPH OCEAN NJ MESONET
HADS SENSOR.
1101 AM TSTM WND DMG 2 NW WATCHUNG 40.65N 74.48W
02/07/2020 SOMERSET NJ PUBLIC
MPING REPORT OF 3 INCH TREE LIMBS OR POWER
POLES SNAPPED.
1102 AM TSTM WND DMG 2 N KENDALL PARK 40.46N 74.54W
02/07/2020 SOMERSET NJ UTILITY COMPANY
DOWNED TREE ON WIRES FROM STRONG WINDS. TIME
ESTIMATED FROM RADAR.
1102 AM TSTM WND DMG 1 WNW MANVILLE 40.55N 74.60W
02/07/2020 SOMERSET NJ UTILITY COMPANY
DOWNED TREE AND WIRES NEAR THE INTERSECTION
OF DUKES PARKWAY AND DICKERSON ROAD. TIME
ESTIMATED FROM RADAR.
1102 AM TSTM WND GST 4 SE MYSTIC ISLAND 39.52N 74.32W
02/07/2020 M65 MPH OCEAN NJ MESONET
WEATHERFLOW SITE XTUK.
1106 AM TSTM WND DMG 2 NW WATCHUNG 40.65N 74.48W
02/07/2020 SOMERSET NJ PUBLIC
DOWNED TREES AND POWER POLES. MPING REPORT.
TIME ESTIMATED FROM RADAR.
1106 AM TSTM WND DMG 1 SW MIDDLESEX 40.57N 74.51W
02/07/2020 MIDDLESEX NJ DEPT OF HIGHWAYS
DOWNED TREE ON STATE HIGHWAY 28 WESTBOUND
WEST OF MOUNTAIN AVENUE. LANE RESTRICTIONS
IN PLACE. TIME ESTIMATED FROM RADAR.
1110 AM TSTM WND DMG 2 WSW HOLMDEL 40.34N 74.20W
02/07/2020 MONMOUTH NJ DEPT OF HIGHWAYS
DOWNED TREE AND WIRES ON NJ 34 NORTHBOUND
SOUTH OF CR 520. ALL LANES CLOSED. TIME
ESTIMATED FROM RADAR.
1111 AM TSTM WND GST 1 E BARNEGAT LIGHT 39.76N 74.09W
02/07/2020 M59 MPH ANZ451 NJ MESONET
WEATHERFLOW SENSOR.
1126 AM TSTM WND DMG SPRING LAKE HEIGHTS 40.16N 74.04W
02/07/2020 MONMOUTH NJ UTILITY COMPANY
DOWNED TREES AND POWER LINES FROM STRONG
WINDS. TIME ESTIMATED FROM RADAR.
1130 AM TSTM WND GST MANTOLOKING 40.04N 74.05W
02/07/2020 M67 MPH ANZ451 NJ MESONET
HADS SENSOR.
1136 AM TSTM WND GST SANDY HOOK 40.47N 74.01W
02/07/2020 M66 MPH MONMOUTH NJ MESONET
1220 PM NON-TSTM WND GST 1 NNW ATLANTIC CITY 39.38N 74.42W
02/07/2020 M60 MPH ATLANTIC NJ MESONET
ATLANTIC CITY MARINA.
1225 PM NON-TSTM WND GST NORTHEAST PHILADELPHIA 40.08N 75.01W
02/07/2020 M58 MPH PHILADELPHIA PA ASOS
KPNE ASOS.
1230 PM NON-TSTM WND GST HIGH POINT 41.32N 74.66W
02/07/2020 M62 MPH SUSSEX NJ MESONET
1230 PM NON-TSTM WND GST 1 NE MAGNOLIA 39.09N 75.46W
02/07/2020 M63 MPH KENT DE DEPT OF HIGHWAYS
DELDOT SITE.
1235 PM NON-TSTM WND GST 1 S ODESSA 39.44N 75.66W
02/07/2020 M61 MPH NEW CASTLE DE MESONET
0130 PM NON-TSTM WND GST 1 NNW ATLANTIC CITY 39.38N 74.42W
02/07/2020 M69 MPH ATLANTIC NJ MESONET
ATLANTIC CITY MARINA.
0156 PM NON-TSTM WND GST BRICK 40.01N 74.06W
02/07/2020 M58 MPH OCEAN NJ MESONET
WEATHERFLOW SITE XMLK.
0218 PM NON-TSTM WND GST HARVEY CEDARS 39.71N 74.14W
02/07/2020 M60 MPH OCEAN NJ MESONET
0230 PM NON-TSTM WND GST 5 SE MYSTIC ISLAND 39.51N 74.33W
02/07/2020 M60 MPH OCEAN NJ MESONET
HADS GAUGE TKTN4.
0240 PM NON-TSTM WND GST HIGH POINT 41.32N 74.66W
02/07/2020 M62 MPH SUSSEX NJ MESONET
0242 PM NON-TSTM WND GST SANDY HOOK 40.47N 74.01W
02/07/2020 M59 MPH MONMOUTH NJ MESONET
WEATHERFLOW SITE.
0254 PM NON-TSTM WND GST ATLANTIC CITY INTERNATI 39.45N 74.57W
02/07/2020 M55 MPH ATLANTIC NJ ASOS
KACY.
0256 PM NON-TSTM WND GST 2 SW BEACH HAVEN 39.55N 74.26W
02/07/2020 M60 MPH OCEAN NJ PUBLIC
CWOP SITE.
0305 PM NON-TSTM WND DMG 1 WSW MALVERN 40.03N 75.53W
02/07/2020 CHESTER PA DEPT OF HIGHWAYS
TREE DOWN IN WIRES ON KING RD AT SUGARTOWN
RD.
0305 PM NON-TSTM WND DMG 1 NNW ASTON TWP. 39.88N 75.43W
02/07/2020 DELAWARE PA DEPT OF HIGHWAYS
DOWNED TREE ON PA-452.
&&
$$
JEO/CMS
NOUS41 KPHI 080044 PNSPHI DEZ001-002-MDZ008-012-015-NJZ016>019-PAZ070-071-101>106-081245- Public Information Statement National Weather Service Mount Holly NJ 744 PM EST Fri Feb 7 2020 ...NWS DAMAGE SURVEY FOR FEBRUARY 7 2020 TORNADO EVENT... .Elkton tornado... Start Location...Elkton in Cecil County MD End Location...Elkton in Cecil County MD Date...February 7, 2020 Estimated Time...9:39 AM EST Maximum EF-Scale Rating...EF-1 Estimated Maximum Wind Speed...100 mph Maximum Path Width...600 yards Path Length...0.8 miles Beginning Lat/Lon...39.65/-75.82 Ending Lat/Lon...39.65/-75.80 * Fatalities...0 * Injuries...0 ...Summary... An EF-1 tornado briefly touched down near the Elk Mills Quarry in Cecil County, Maryland. The tornado uprooted and snapped numerous softwood trees just east and north of the quarry near the intersection of Elk Mills Road, Appleton Road, and Fletchwood Road. A few hardwood and softwood trees were uprooted on nearby residential properties. The tornado continued east along Fletchwood Road passing over some industrial buildings toward the Pine Hill Apartment complex. At the apartment complex, numerous pine trees were uprooted or snapped. The tornado then dissipated as it continued east away from the apartment complex. Thankfully, no significant structural damage occurred and no injuries or fatalities occurred as a result of this tornado. EF Scale: The Enhanced Fujita Scale classifies tornadoes into the following categories: EF0...Weak......65 to 85 mph EF1...Weak......86 to 110 mph EF2...Strong....111 to 135 mph EF3...Strong....136 to 165 mph EF4...Violent...166 to 200 mph EF5...Violent...>200 mph * The information in this statement is preliminary and subject to change pending final review of the event and publication in NWS Storm Data. $$
Notable Radar Imagery (GR2Analyst)
 |
 |
| Figure 1: KDOX radar reflectivity factor for the 0.5 degree elevation angle valid at 1417 UTC 7 February 2020. At this time, severe convection was entering the WFO Mount Holly CWA. While the radar reflectivity was not overly impressive (typical of cold season convection), numerous upstream damage reports in the WFO Baltimore/Washington CWA increased forecaster confidence that severe winds were occurring with this convection, and warnings were issued accordingly. | Figure 2: KDIX radar reflectivity factor for the 0.5 degree elevation angle valid at 1515 UTC 7 February 2020, about an hour after Figure 1. Severe convection was now entering the Philadelphia metro area. Cold season convection is typically shallow, and this case was no exception. While some echoes over 50 to 55 dBz can be seen in this image scanning just a few thousand feet above ground level over most of the line, these storms were only about 15,000 feet tall. Deep convection in summertime often exceeds 40,000 feet in height. |
 |
 |
| Figure 3: Same as Figure 2 valid at 1618 UTC 7 February 2020, about another hour later. By this time, convection was exiting the WFO Mount Holly CWA, and was also weakening as it moved away from the already marginal instability further west. Still, some damaging gusts occurred all the way to the New Jersey coast. | Figure 4: KDOX radar reflectivity factor (top left), storm relative velocity (SRM; top right), correlation coefficient (CC, bottom left) and spectrum width (SW; bottom right),) for the 0.5 degree elevation angle valid at 1436 UTC 7 February 2020. This was near the time a tornado touched down near Elk Mills. A velocity couplet is seen in the SRM data, with the reflectivity showing a “break” in the line sometimes associated with tornado formation. The enhanced SW values indicate turbulent flow often associated with tornadoes. |
 |
 |
| Figure 5: KDOX radar reflectivity factor (left) and SRM (right) for the 0.5 degree elevation angle valid at 1436 UTC 7 February 2020. This is the same time as in Figure 4, and simply provides a somewhat broader perspective. An NWS storm survey team confirmed a small area of tornado damage when they surveyed the area that afternoon. As cold air rushed into the region behind the frontal system which produced the severe weather, the survey team experienced snow flurries while conducting their work. | Figure 6: KDIX base velocity data for the 0.5 degree elevation angle valid at 1517 UTC 7 February 2020, near the time of Figure 2. The bright greens over southeast PA, southern NJ, and northern DE represent radar estimated velocities of 50 to 65 kts (about 55 to 75 mph) at around 3000 to 5000 feet above the surface. The strong low level vertical motion associated with the shallow but intense convection was easily able to transfer wind gusts of 50 to 70 mph to the surface, producing widespread damage. |
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