June 22, 2012 Severe Weather & Downbursts in D.C.

PUBLIC INFORMATION STATEMENT

NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1119 PM EDT SAT JUN 23 2012

...PUBLIC INFORMATION STATEMENT...

...DOWNBURSTS CONFIRMED IN BLADENSBURG AND JOHNSVILLE MARYLAND...

THE NATIONAL WEATHER SERVICE OFFICE IN STERLING VIRGINIA HAS CONFIRMED THAT DAMAGE IN 
TWO MARYLAND LOCALES FROM THUNDERSTORMS ON FRIDAY AFTERNOON AND EVENING 22 JUNE 2012 
WAS THE RESULT OF DOWNBURST WINDS.

IN JOHNSVILLE MARYLAND...THE ROOF OF A DAIRY BARN WAS DESTROYED AND BLOWN DOWNWIND FOR 
SEVERAL HUNDRED FEET. NUMEROUS TREES WERE UPROOTED AND LARGE LIMBS WERE SNAPPED. WIND 
IN THIS DOWNBURST WAS ESTIMATED AT AROUND 80 MPH.

IN BLADENSBURG MARYLAND...EXTENSIVE DAMAGE OCCURRED TO BUILDINGS AND TREES. ALONG 
NEWTON STREET...ROOF DAMAGE WAS SUSTAINED AT AN APARTMENT BUILDING. PIECES OF THE ROOF 
WERE BLOWN DOWNWIND AND DAMAGED VEHICLES. ADDITIONAL HOMES IN THE AREA SUFFERED ROOF
UPLIFT. NUMEROUS TREES WERE UPROOTED...AND MANY LARGE LIMBS WERE SNAPPED. POWER POLES 
ALSO WERE OBSERVED TO BE LEANING. WIND IN THIS DOWNBURST WAS ESTIMATED TO BE 90 TO 100 
MPH.

A DOWNBURST OCCURS WHEN COLD AIR HIGH IN A THUNDERSTORM DESCENDS AND ACCELERATES. AS 
THE STREAM OF COLD AIR REACHES THE GROUND...IT SPREADS OUT AND CAN ACCELERATE FURTHER. 
WHEN ENVIRONMENTAL CONDITIONS ARE FAVORABLE...WIND IN A DOWNBURST CAN EXCEED 80 TO 100 
MPH. SUCH WIND IS COMPARABLE TO OR STRONGER THAN MANY TORNADOES AND CAN CAUSE SIMILAR 
DAMAGE.

IN SOME CASES...HAIL AND VERY HEAVY RAIN ALSO ACCOMPANY THE DOWNBURST...LEADING TO 
FLOODING AND SIGNIFICANT DAMAGE FROM WIND-DRIVEN HAIL.

A LOCALIZED DOWNBURST...CALLED A MICROBURST...OCCURRED ON 1 AUGUST 1983 AT ANDREWS AIR 
FORCE BASE...WHERE A GUST OF 158 MPH WAS RECORDED. THIS DOWNBURST WAS ANALYZED IN 
DETAIL BY DR. TED FUJITA...WHO PIONEERED THE CONCEPT OF WIND DAMAGE SURVEYS.

A WELL-SITED DOPPLER RADAR CAN OFFER HIGH CONFIDENCE THAT A DOWNBURST HAS OCCURRED. AS 
DOWNBURST AIR REACHES THE GROUND AND SPREADS OUTWARD...A DIVERGENT WIND SIGNATURE 
PROVIDES A TELLTALE SIGN THAT A DOWNBURST IS OCCURRING. IN BOTH STORMS ON 22 JUNE...
SUCH WIND SIGNATURES WERE OBSERVED IN BOTH NATIONAL WEATHER SERVICE DOPPLER RADAR AND 
FAA TERMINAL DOPPLER RADAR DATA.

THE NATIONAL WEATHER SERVICE OFFICE IN STERLING APPRECIATES ALL DAMAGE REPORTS AND 
INFORMATION PROVIDED BY EMERGENCY MANAGEMENT...STORM SPOTTERS...BROADCAST MEDIA AND 
THE PUBLIC.

$$

KRAMAR

Radar Data from the TDCA Reagan National Airport FAA
Terminal Doppler Weather Radar (TDWR)

Click on each image (gif) to enlarge.

Reflectivity animation (7:35pm - 7:39pm)	Velocity animation (7:35pm - 7:39pm)

Reflectivity animation (7:51pm - 7:57pm)	Velocity animation (7:51pm - 7:57pm)

Still image of a downburst radar signature in Northeast D.C.
The image below is of velocity from TDCA at 2352 UTC (7:52pm), just a couple of minutes before intense winds near 100 mph caused damage just south of Bladensburg, MD. The blue arrow represents the downburst (downdraft) heading toward the surface. The red arrow represents the less intense side of the downburst once it reaches the surface, while the larger green arrow is where the most intense "straight-line winds" are accelerating away from where the downburst initially made contact with the ground. The colors represent the horizontal direction at which meteorological targets (rain in this case) are moving, relative to the location of the radar - which is to the south and east of the downburst impact area. Red colors represent air/raindrops moving away from the radar and green represents air/raindrops moving toward the radar. In this image, the brighter the color, the higher the speeds.

Learn more about the Doppler Effect.

Several downbursts occurred along a line from Bethesda to Bladensburg, a few of them chronicled in the .gif images above. The one-minute lowest-degree data provided by the FAA TDWRs gives an amazing account of just how quickly downbursts can occur and their relatively short lifecycle. The downbursts that impacted northern sections of Washington D.C. and the surrounding suburbs occurred within a 2-3 minute window, covering several square miles and causing sporadic damage, depending in the strength of the straight-line winds.

Severe Weather Reports from June 22nd across the region

NWUS51 KLWX 240319
LSRLWX

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1119 PM EDT SAT JUN 23 2012

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

0151 PM     TSTM WND DMG     MADISON MILLS           38.28N  78.14W
06/22/2012                   MADISON            VA   EMERGENCY MNGR

0215 PM     TSTM WND DMG     6 ENE BUFFALO SPRINGS   37.64N  78.77W
06/22/2012                   NELSON             VA   POST OFFICE

0343 PM     TSTM WND DMG     4 NE MASSAPONAX         38.22N  77.45W
06/22/2012                   SPOTSYLVANIA       VA   AMATEUR RADIO

            TREES AND BRANCHES DOWN NEAR INTERSECTION OF US 17 AND
            MASSAPONAX CHURCH ROAD.

0346 PM     TSTM WND DMG     3 S FREDERICKSBURG      38.25N  77.48W
06/22/2012                   SPOTSYLVANIA       VA   911 CALL CENTER

            TREE DOWN NEAR INTERSECTION OF IRONWOOD LANE AND
            PERSIMMON LANE

0347 PM     TSTM WND DMG     4 ENE MASSAPONAX        38.22N  77.44W
06/22/2012                   SPOTSYLVANIA       VA   911 CALL CENTER

            TREE DOWN ACROSS BENCHMARK ROAD NEAR MILLS DR.

0347 PM     TSTM WND DMG     4 NE MASSAPONAX         38.22N  77.45W
06/22/2012                   SPOTSYLVANIA       VA   911 CALL CENTER

            TREE DOWN NEAR INTERSECTION OF MILLS DR AND LEE HILL
            SCHOOL DR.

0348 PM     TSTM WND DMG     4 S BROOKFIELD          38.25N  77.43W
06/22/2012                   SPOTSYLVANIA       VA   911 CALL CENTER

            TREE DOWN ACROSS BENCHMARK RD NEAR TIDEWATER TRAIL.

0412 PM     TSTM WND DMG     1 ENE FALLING WATERS    39.56N  77.88W
06/22/2012                   BERKELEY           WV   BROADCAST MEDIA

            NUMEROUS TREES DOWN INCLUDING ONE THAT HAD A TRUNK 4
            FEET IN DIAMETER.

0415 PM     TSTM WND DMG     1 E FALLING WATERS      39.56N  77.87W
06/22/2012                   WASHINGTON         MD   PUBLIC

            LARGE LIMBS TOOK DOWN POWER LINES AND TRANSFORMER ON
            FALLING WATERS ROAD.

0441 PM     HAIL             4 S CHEWSVILLE          39.59N  77.64W
06/22/2012  M0.88 INCH       WASHINGTON         MD   AMATEUR RADIO

            NICKEL HAIL REPORTED AT INTERSECTION OF INTERSTATE 70
            AND MD STATE ROUTE 66.

0441 PM     HAIL             DARES BEACH             38.56N  76.52W
06/22/2012  E0.75 INCH       CALVERT            MD   PUBLIC

0441 PM     HAIL             1 W DARES BEACH         38.56N  76.53W
06/22/2012  M0.75 INCH       CALVERT            MD   PUBLIC

0442 PM     HAIL             DARES BEACH             38.56N  76.52W
06/22/2012  E0.75 INCH       CALVERT            MD   PUBLIC

0443 PM     HAIL             1 SW DARES BEACH        38.55N  76.52W
06/22/2012  E1.00 INCH       CALVERT            MD   PUBLIC

            HAILED FOR ABOUT 5 MINUTES ON GOLDSTEIN ROAD.

0459 PM     TSTM WND DMG     WOLFSVILLE              39.58N  77.55W
06/22/2012                   FREDERICK          MD   911 CALL CENTER

            TREE DOWN AT INTERSECTION OF STOTTLEMYER ROAD AND
            BRANDENBURG HOLLOW ROAD.

0507 PM     TSTM WND DMG     2 N CLARY               39.06N  78.37W
06/22/2012                   SHENANDOAH         VA   TRAINED SPOTTER

            NUMEROUS BRANCHES DOWN...A FEW LARGE ONES...NEAR
            INTERSECTION OF MIDDLE ROAD AND ROUTE 55.

0523 PM     TSTM WND DMG     4 SSE FALLING WATERS    39.51N  77.85W
06/22/2012                   BERKELEY           WV   TRAINED SPOTTER

            SEVERAL LARGE LIMBS DOWN.

0525 PM     TSTM WND DMG     2 ENE STEPHENS CITY     39.11N  78.19W
06/22/2012                   FREDERICK          VA   TRAINED SPOTTER

            NUMEROUS SMALL BRANCHES DOWN IN THE NEIGHBORHOOD.

0538 PM     TSTM WND DMG     2 N LIBERTYTOWN         39.52N  77.24W
06/22/2012                   FREDERICK          MD   TRAINED SPOTTER

            SEVERAL TREE BRANCHES UP TO 2 INCHES IN DIAMETER DOWN.

0538 PM     TSTM WND DMG     2 N LIBERTYTOWN         39.52N  77.24W
06/22/2012                   FREDERICK          MD   TRAINED SPOTTER

            SEVERAL TREE LIMBS 6 INCHES IN DIAMETER DOWN

0538 PM     TSTM WND DMG     2 N LIBERTYTOWN         39.52N  77.24W
06/22/2012                   FREDERICK          MD   TRAINED SPOTTER

            SEVERAL TREE LIMBS 12 INCHES IN DIAMETER DOWN.

0538 PM     DOWNBURST        3 SSE LADIESBURG        39.54N  77.23W
06/22/2012  E80 MPH          FREDERICK          MD   EMERGENCY MNGR

            ROOF OF A LARGE DAIRY BARN DESTROYED BY THUNDERSTORM
            DOWNBURST WITH WIND OF AROUND 80 MPH. PIECES OF ROOF
            WERE BLOWN DOWNWIND SEVERAL HUNDRED FEET. MANY TREES IN
            THIS AREA WERE UPROOTED OR DAMAGED.

0538 PM     TSTM WND DMG     2 NNW LIBERTYTOWN       39.52N  77.26W
06/22/2012                   FREDERICK          MD   TRAINED SPOTTER

            LARGE LIMBS SNAPPED ALONG COPPERMINE RD

0545 PM     HAIL             1 WSW TOWN CREEK        38.31N  76.50W
06/22/2012  E0.75 INCH       ST. MARYS          MD   TRAINED SPOTTER

0546 PM     HAIL             1 NNW CALIFORNIA        38.30N  76.50W
06/22/2012  E0.75 INCH       ST. MARYS          MD   TRAINED SPOTTER

0550 PM     HAIL             CALIFORNIA              38.29N  76.49W
06/22/2012  E0.75 INCH       ST. MARYS          MD   PUBLIC

0551 PM     HAIL             1 SE CALIFORNIA         38.28N  76.48W
06/22/2012  E0.75 INCH       ST. MARYS          MD   TRAINED SPOTTER

0551 PM     TSTM WND DMG     3 W MOUNT WEATHER       39.06N  77.94W
06/22/2012                   CLARKE             VA   TRAINED SPOTTER

            BRANCHES DOWN.

0552 PM     TSTM WND DMG     1 NNW UNIONVILLE        39.49N  77.19W
06/22/2012                   FREDERICK          MD   DEPT OF HIGHWAYS

            TREE DOWN ACROSS MD 31 AT COPPERMINE RD

0554 PM     HAIL             2 SSW REESE             39.52N  76.95W
06/22/2012  M0.75 INCH       CARROLL            MD   TRAINED SPOTTER

            DIME SIZE HAIL

0559 PM     TSTM WND DMG     2 NNW WINFIELD          39.48N  77.06W
06/22/2012                   CARROLL            MD   DEPT OF HIGHWAYS

            25 INCH DIAMETER TREE DOWN.

0600 PM     TSTM WND DMG     2 SSE WHITEFORD         39.68N  76.33W
06/22/2012                   HARFORD            MD   EMERGENCY MNGR

            TREE DOWN ON BAY ROAD NEAR INTERSECTION OF HEAPS ROAD.

0602 PM     HAIL             2 NW SCARBORO           39.67N  76.32W
06/22/2012  E1.00 INCH       HARFORD            MD   TRAINED SPOTTER

            ALONG ADY RD

0606 PM     HAIL             2 ESE PYLESVILLE        39.68N  76.34W
06/22/2012  E0.88 INCH       HARFORD            MD   TRAINED SPOTTER

            NICKEL SIZE HAIL.

0610 PM     HAIL             1 ENE REISTERSTOWN      39.46N  76.80W
06/22/2012  M0.75 INCH       BALTIMORE          MD   TRAINED SPOTTER

            DIME SIZE HAIL

0611 PM     TSTM WND DMG     SCARBORO                39.65N  76.29W
06/22/2012                   HARFORD            MD   EMERGENCY MNGR

            TREES DOWN ON WIRES.

0611 PM     TSTM WND DMG     SCARBORO                39.65N  76.29W
06/22/2012                   HARFORD            MD   EMERGENCY MNGR

            TREE DOWN ON WIRES NEAR INTERSECTION OF SCARBORO ROAD
            AND MILL GREEN ROAD.

0613 PM     HAIL             1 ENE SCARBORO          39.65N  76.28W
06/22/2012  M1.00 INCH       HARFORD            MD   TRAINED SPOTTER

            QUARTER SIZE HAIL

0613 PM     TSTM WND DMG     1 ENE SCARBORO          39.66N  76.27W
06/22/2012                   HARFORD            MD   PUBLIC

            LARGE TREE LIMB DOWN IN DRIVEWAY. ADDITIONAL LARGE
            LIMBS DOWN IN NEIGHBORING YARD.

0613 PM     TSTM WND DMG     1 ENE SCARBORO          39.66N  76.27W
06/22/2012                   HARFORD            MD   PUBLIC

            SMALL LIMBS DOWN

0614 PM     TSTM WND DMG     ROUND HILL              39.14N  77.77W

06/22/2012                   LOUDOUN            VA   TRAINED SPOTTER

            NUMEROUS BRANCHES DOWN.

0615 PM     TSTM WND DMG     2 ENE SCARBORO          39.66N  76.25W
06/22/2012                   HARFORD            MD   EMERGENCY MNGR

            TREE DOWN AT INTERSECTION OF MD ROUTE 440 AND GLEN COVE
            ROAD.

0615 PM     TSTM WND DMG     3 SE SCARBORO           39.62N  76.26W
06/22/2012                   HARFORD            MD   EMERGENCY MNGR

            TREE DOWN NEAR INTERSECTION OF TRAPPE CHURCH ROAD AND
            MD ROUTE 136.

0615 PM     TSTM WND DMG     3 NNW DARLINGTON        39.68N  76.23W
06/22/2012                   HARFORD            MD   TRAINED SPOTTER

            TREE DOWN ACROSS ROAD AND LIMBS DOWN.

0616 PM     HAIL             1 SW ROUND HILL         39.13N  77.78W
06/22/2012  M0.75 INCH       LOUDOUN            VA   TRAINED SPOTTER

            DIME SIZE HAIL

0616 PM     TSTM WND DMG     1 WSW PURCELLVILLE      39.13N  77.72W
06/22/2012                   LOUDOUN            VA   TRAINED SPOTTER

            SEVERAL BRANCHES WERE DOWN.

0617 PM     HAIL             2 E SCARBORO            39.64N  76.27W
06/22/2012  M0.88 INCH       HARFORD            MD   TRAINED SPOTTER

0617 PM     TSTM WND DMG     1 SSW PURCELLVILLE      39.12N  77.72W
06/22/2012                   LOUDOUN            VA   TRAINED SPOTTER

            NUMEROUS BRANCHES DOWN.

0618 PM     TSTM WND DMG     3 NW DARLINGTON         39.66N  76.24W
06/22/2012                   HARFORD            MD   EMERGENCY MNGR

            TREES DOWN ON FRANKLIN CHURCH ROAD NEAR INTERSECTION
            WITH GLEN COVE ROAD.

0618 PM     TSTM WND DMG     PURCELLVILLE            39.14N  77.70W
06/22/2012                   LOUDOUN            VA   TRAINED SPOTTER

            SIX TO EIGHT INCH DIAMETER TREE DOWN OVER WASHINGTON
            AND OLD DOMINION BIKE TRAIL. NUMEROUS BRANCHES DOWN
            ALONG THE TRAIL.

0619 PM     TSTM WND DMG     3 SSW DARLINGTON        39.60N  76.22W
06/22/2012                   HARFORD            MD   EMERGENCY MNGR

            TREE DOWN NEAR INTERSECTION OF DETHS FORD ROAD AND
            GLENVILLE ROAD.

0620 PM     TSTM WND DMG     3 NW DARLINGTON         39.67N  76.23W
06/22/2012                   HARFORD            MD   EMERGENCY MNGR

            TREE DOWN ON FRANKLIN CHURCH ROAD.

0623 PM     TSTM WND DMG     1 N DARLINGTON          39.65N  76.20W
06/22/2012                   HARFORD            MD   EMERGENCY MNGR

            TREE DOWN ON WIRES ON CASTLETON ROAD.

0626 PM     TSTM WND DMG     CONOWINGO DAM           39.66N  76.18W
06/22/2012                   HARFORD            MD   EMERGENCY MNGR

            TREE DOWN ON ROUTE 1 AT CONOWINGO DAM.

0629 PM     TSTM WND DMG     CONOWINGO DAM           39.65N  76.18W
06/22/2012                   HARFORD            MD   DEPT OF HIGHWAYS

            TREE DOWN ACROSS U.S. RT 1

0630 PM     TSTM WND DMG     1 SW REISTERSTOWN       39.45N  76.83W
06/22/2012                   BALTIMORE          MD   TRAINED SPOTTER

            SEVERAL SMALL BRANCHES HALF INCH TO ONE INCH ONTO
            VEHICLE ALONG MARSHALL WOOD RD.

0630 PM     TSTM WND DMG     1 SW REISTERSTOWN       39.45N  76.83W
06/22/2012                   BALTIMORE          MD   TRAINED SPOTTER

            PART OF A LARGE TREE APPROXIMATELY TWO AND ONE HALF
            FEET IN DIAMETER ONTO HOUSE ALONG MARSHALL WOOD RD.

0630 PM     TSTM WND DMG     1 SSE CONOWINGO DAM     39.65N  76.17W
06/22/2012                   HARFORD            MD   EMERGENCY MNGR

            MULTIPLE TREES DOWN BLOCKING ACCESS TO CAMP RAMBLEWOOD

0630 PM     TSTM WND DMG     3 SE PHILOMONT          39.03N  77.71W
06/22/2012                   LOUDOUN            VA   911 CALL CENTER

            TREE DOWN NEAR INTERSECTION OF SNICKERSVILLE TURNPIKE
            AND MOUNTVILLE ROAD.

0636 PM     TSTM WND DMG     1 NW REISTERSTOWN       39.47N  76.83W
06/22/2012                   BALTIMORE          MD   CO-OP OBSERVER

            3 INCH TREE LIMB BROUGHT DOWN ONTO PORCH FROM MEASURED
            50 MPH WIND GUST.

0639 PM     TSTM WND DMG     3 NW HAVRE DE GRACE     39.58N  76.13W
06/22/2012                   HARFORD            MD   EMERGENCY MNGR

            TREE DOWN NEAR OVERPASS OF LAPIDUM ROAD AND INTERSTATE
            95.

0651 PM     TSTM WND DMG     1 ESE GLEEDSVILLE       39.04N  77.58W
06/22/2012                   LOUDOUN            VA   NWS EMPLOYEE

            DAMAGE TO PINE LIMBS

0658 PM     TSTM WND DMG     ARCOLA                  38.95N  77.53W
06/22/2012                   LOUDOUN            VA   NWS EMPLOYEE

            BROKEN SMALL TO MEDIUM TREE BRANCHES

0658 PM     TSTM WND DMG     4 SSE GLEEDSVILLE       39.00N  77.57W
06/22/2012                   LOUDOUN            VA   NWS EMPLOYEE

            TREE DOWN

0714 PM     TSTM WND DMG     2 WSW STERLING          38.99N  77.47W
06/22/2012                   LOUDOUN            VA   NWS EMPLOYEE

            MEDIUM BRANCH SNAPPED OFF ALONG OLD OX ROAD

0724 PM     TSTM WND DMG     POTOMAC                 39.03N  77.20W
06/22/2012                   MONTGOMERY         MD   911 CALL CENTER

            MANY REPORTS OF TREES DOWN

0726 PM     TSTM WND DMG     3 ESE BATESVILLE        37.98N  78.68W
06/22/2012                   ALBEMARLE          VA   911 CALL CENTER

            SEVERAL TREES DOWN NEAR EDGE VALLEY RD AND PLANK RD

0727 PM     TSTM WND DMG     2 NW NORTH GARDEN       37.96N  78.66W
06/22/2012                   ALBEMARLE          VA   911 CALL CENTER

            TREES DOWN NEAR PLANK RD AND MONACAN TRAIL

0727 PM     TSTM WND DMG     3 NW NORTH GARDEN       37.97N  78.67W
06/22/2012                   ALBEMARLE          VA   911 CALL CENTER

            NUMEROUS TREES DOWN ALONG PLANK ROAD

0738 PM     TSTM WND DMG     1 SSE CHEVY CHASE SECTI 38.97N  77.07W
06/22/2012                   DISTRICT OF COLUMB DC   EMERGENCY MNGR

            TREE BLOWN ONTO HOUSE FROM STRONG THUNDERSTORM WIND
            GUST.

0738 PM     TSTM WND DMG     1 E CHEVY CHASE VILLAGE 38.97N  77.07W
06/22/2012                   DISTRICT OF COLUMB DC   EMERGENCY MNGR

            TREE BLOWN ONTO HOUSE FROM STRONG THUNDERSTORM WIND
            GUST.

0739 PM     HAIL             1 WNW CHEVY CHASE SECTI 38.99N  77.10W
06/22/2012  M0.75 INCH       MONTGOMERY         MD   TRAINED SPOTTER

            DIME SIZE HAIL ALONG FAIRMONT AVENUE

0739 PM     TSTM WND DMG     WASHINGTON              38.91N  77.02W
06/22/2012                   DISTRICT OF COLUMB DC   EMERGENCY MNGR

            TREE BLOWN ONTO HOUSE FROM STRONG THUNDERSTORM WIND
            GUST.

0743 PM     TSTM WND DMG     2 WSW TAKOMA PARK       38.97N  77.04W
06/22/2012                   DISTRICT OF COLUMB DC   EMERGENCY MNGR

            TREE BLOWN ONTO HOUSE FROM STRONG THUNDERSTORM WIND
            GUST.

0745 PM     TSTM WND GST     1 ESE SILVER SPRING     38.99N  77.03W
06/22/2012  E63 MPH          MONTGOMERY         MD   NWS EMPLOYEE

0748 PM     TSTM WND DMG     1 WSW CHILLUM           38.96N  77.01W
06/22/2012                   DISTRICT OF COLUMB DC   BROADCAST MEDIA

            LARGE TREE DOWN AT MISSOURI AVE NW AND KENNEDY ST NW

0749 PM     TSTM WND DMG     1 WSW TAKOMA PARK       38.98N  77.02W
06/22/2012                   DISTRICT OF COLUMB DC   EMERGENCY MNGR

            TREE BLOWN ONTO HOUSE FROM STRONG THUNDERSTORM WIND
            GUST.

0752 PM     TSTM WND DMG     1 WSW MOUNT RAINIER     38.94N  76.98W
06/22/2012                   DISTRICT OF COLUMB DC   EMERGENCY MNGR

            TREE FELL ON HOUSE

0753 PM     TSTM WND GST     1 NNW NATIONAL ARBORETU 38.92N  76.98W
06/22/2012  M64 MPH          DISTRICT OF COLUMB DC   MESONET

            LANGDON EDUCATION CTR

0753 PM     TSTM WND DMG     1 ESE CATHOLIC UNIVERSI 38.93N  76.98W
06/22/2012                   DISTRICT OF COLUMB DC   EMERGENCY MNGR

            TREE ON HOUSE

0754 PM     TSTM WND DMG     1 SSW MOUNT RAINIER     38.93N  76.97W
06/22/2012                   DISTRICT OF COLUMB DC   EMERGENCY MNGR

            TREE BLOWN ONTO HOUSE FROM STRONG THUNDERSTORM WIND
            GUST.

0756 PM     DOWNBURST        1 S BLADENSBURG         38.94N  76.93W
06/22/2012  E95 MPH          PRINCE GEORGES     MD   EMERGENCY MNGR

            EXTENSIVE DAMAGE TO BUILDINGS AND TREES ALONG NEWTON
            STREET. ROOF DAMAGE WAS SUSTAINED AT AN APARTMENT
            BUILDING WITH SEVERAL HUNDRED PEOPLE DISPLACED. DAMAGE
            IS CONFIRMED TO BE THE RESULT OF A THUNDERSTORM
            DOWNBURST WITH 90 TO 100 MPH WINDS CENTERED JUST SOUTH
            OF BLADENSBURG.

0757 PM     TSTM WND DMG     1 SSW BLADENSBURG       38.94N  76.93W
06/22/2012                   PRINCE GEORGES     MD   NWS EMPLOYEE

            HOME WAS DESTROYED AFTER THUNDERSTORM WIND CAUSED
            SIGNIFICANT DAMAGE IN THE NEIGHBORHOOD

0805 PM     TSTM WND GST     SPRINGDALE              38.93N  76.83W
06/22/2012  M58 MPH          PRINCE GEORGES     MD   MESONET

0815 PM     TSTM WND DMG     1 SSW MADISON           38.36N  78.27W
06/22/2012                   MADISON            VA   TRAINED SPOTTER

            BRANCHES DOWN ALONG FAIRGROUND ROAD.

0827 PM     TSTM WND DMG     2 ESE ARODA             38.31N  78.21W
06/22/2012                   MADISON            VA   TRAINED SPOTTER

            REPORT OF TREES DOWN NEAR ORANGE VA DUE TO STRONG
            THUNDERSTORM WINDS.

&&

EVENT NUMBER LWX1200356 LWX1200357 LWX1200364 LWX1200406 LWX1200407
LWX1200408 LWX1200409 LWX1200359 LWX1200358 LWX1200361 LWX1200432
LWX1200433 LWX1200431 LWX1200430 LWX1200360 LWX1200410 LWX1200412
LWX1200411 LWX1200362 LWX1200370 LWX1200371 LWX1200427 LWX1200435
LWX1200415 LWX1200413 LWX1200425 LWX1200414 LWX1200429 LWX1200378
LWX1200363 LWX1200372 LWX1200387 LWX1200396 LWX1200365 LWX1200366
LWX1200386 LWX1200388 LWX1200367 LWX1200373 LWX1200374 LWX1200416
LWX1200383 LWX1200391 LWX1200393 LWX1200368 LWX1200417 LWX1200369
LWX1200418 LWX1200385 LWX1200424 LWX1200395 LWX1200392 LWX1200389
LWX1200390 LWX1200376 LWX1200375 LWX1200377 LWX1200403 LWX1200404
LWX1200384 LWX1200394 LWX1200419 LWX1200420 LWX1200421 LWX1200422
LWX1200423 LWX1200400 LWX1200401 LWX1200402 LWX1200437 LWX1200439
LWX1200379 LWX1200440 LWX1200441 LWX1200380 LWX1200405 LWX1200438
LWX1200398 LWX1200381 LWX1200399 LWX1200436 LWX1200428 LWX1200397
LWX1200382 LWX1200426 LWX1200434

$$

KRAMAR

Arctic Air Bringing Cold Temperatures to the Eastern Half of the U.S.; Strong Clipper System Wednesday and Thursday

June 22, 2012 Severe Weather & Downbursts in D.C.