Alert archive / Virginia / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 221, NWS Baltimore/Washington

June 12, 20117 counties in Virginia

NWS Baltimore/Washington issued this severe thunderstorm warning at Jun 12, 2011, 4:03 PM EDT for 7 counties in Virginia. It was in force for 42 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 12, 2011, 4:03 PM EDT (20:03 UTC)
Expired
Jun 12, 2011, 4:45 PM EDT
In force
42 min
Issued by
NWS Baltimore/Washington
Area
Storm-based polygon

Counties City of Fairfax, VA, City of Manassas, VA, City of Manassas Park, VA, Fairfax County, VA, Fauquier County, VA, Loudoun County, VA, Prince William County, VA

The radar

The Sterling radar (KLWX), 17 km from the middle of the area, began a volume at 20:05 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 12, 1:48 PM EDTSevere Thunderstorm WatchSPC6 hr

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Baltimore/Washington wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 12, 3:12 PM EDT, 51 minutes earlier.

Area forecast discussion, Jun 12, 3:12 PM EDT, 51 minutes before
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Hazardous weather outlook, Jun 12, 2:33 PM EDT, 1 hour 30 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
233 PM EDT SUN JUN 12 2011

ANZ530>543-DCZ001-MDZ006-007-011-013-014-016>018-VAZ052>057-
131445-
CHESAPEAKE BAY NORTH OF POOLES ISLAND MD-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT MD-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH MD-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT MD-
CHESAPEAKE BAY FROM DRUM POINT MD TO SMITH POINT VA-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD MD-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND MD-
TIDAL POTOMAC FROM COBB ISLAND MD TO SMITH POINT VA-
PATAPSCO RIVER INCLUDING BALTIMORE HARBOR-
CHESTER RIVER TO QUEENSTOWN MD-EASTERN BAY-
CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER-
PATUXENT RIVER TO BROOMES ISLAND MD-
TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH
ISLAND-DISTRICT OF COLUMBIA-NORTHERN BALTIMORE-HARFORD-
SOUTHERN BALTIMORE-PRINCE GEORGES-ANNE ARUNDEL-CHARLES-ST. MARYS-
CALVERT-PRINCE WILLIAM/MANASSAS/MANASSAS PARK-FAIRFAX-
ARLINGTON/FALLS CHURCH/ALEXANDRIA-STAFFORD-SPOTSYLVANIA-
KING GEORGE-
233 PM EDT SUN JUN 12 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE MARYLAND PORTION OF THE
CHESAPEAKE BAY...TIDAL POTOMAC RIVER...AND ADJACENT COUNTIES IN
CENTRAL MARYLAND AND NORTHERN VIRGINIA AS WELL AS THE DISTRICT OF
COLUMBIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT

A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 8:00 PM. SOME
THUNDERSTORMS HAVE THE POTENTIAL TO PRODUCE LARGE HAIL AND
DAMAGING WIND GUSTS.

A SMALL CRAFT ADVISORY IS IN EFFECT LATE TONIGHT FOR THE MARYLAND
PORTION OF THE CHESAPEAKE BAY SOUTH OF POOLES ISLAND AND THE LOWER
TIDAL POTOMAC RIVER FROM COBB ISLAND TO SMITH POINT.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

A SMALL CRAFT ADVISORY IS IN EFFECT UNTIL NOON MONDAY FOR THE
MARYLAND PORTION OF THE CHESAPEAKE BAY SOUTH OF POOLES ISLAND AND
THE LOWER TIDAL POTOMAC RIVER FROM COBB ISLAND TO SMITH POINT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EVENING.

MDZ003>005-009-010-501-502-VAZ025>031-036>040-042-050-051-501>504-
WVZ050>053-055-501>506-131445-
WASHINGTON-FREDERICK MD-CARROLL-MONTGOMERY-HOWARD-
EXTREME WESTERN ALLEGANY-CENTRAL AND EASTERN ALLEGANY-AUGUSTA-
ROCKINGHAM-SHENANDOAH-FREDERICK VA-PAGE-WARREN-CLARKE-NELSON-
ALBEMARLE-GREENE-MADISON-RAPPAHANNOCK-LOUDOUN-ORANGE-CULPEPER-
NORTHERN FAUQUIER-SOUTHERN FAUQUIER-WESTERN HIGHLAND-
EASTERN HIGHLAND-HAMPSHIRE-MORGAN-BERKELEY-JEFFERSON-HARDY-
WESTERN GRANT-EASTERN GRANT-WESTERN MINERAL-EASTERN MINERAL-
WESTERN PENDLETON-EASTERN PENDLETON-
233 PM EDT SUN JUN 12 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN WEST VIRGINIA...
NORTHERN AND CENTRAL VIRGINIA...AND CENTRAL AND WESTERN MARYLAND
WITH THE EXCEPTION OF GARRETT COUNTY.

.DAY ONE...THIS AFTERNOON AND TONIGHT

A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 8:00 PM. SOME
THUNDERSTORMS HAVE THE POTENTIAL TO PRODUCE LARGE HAIL AND
DAMAGING WIND GUSTS.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EVENING.

In the hours before

Special weather statement, Jun 12, 3:07 PM EDT, 56 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
307 PM EDT SUN JUN 12 2011

MDZ017-018-121930-
CALVERT MD-ST. MARYS MD-
307 PM EDT SUN JUN 12 2011

...STRONG THUNDERSTORM TO AFFECT CALVERT AND ST. MARYS COUNTIES...

AT 307 PM EDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM OVER
BROOMES ISLAND...MOVING EAST AT 20 MPH.

LOCATIONS IMPACTED INCLUDE LUSBY...TOWN CREEK...CHESAPEAKE RANCH
ESTATES AND PATUXENT RIVER NAS.

THIS STORM IS PRODUCING FREQUENT CLOUD TO GROUND LIGHTNING. MOVE
INDOORS IMMEDIATELY FOR YOUR SAFETY. IF YOU CAN HEAR THUNDER...YOU
ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING.

HEAVY RAIN WITH THIS STORM MAY REDUCE VISIBILITIES TO BELOW ONE MILE
AND MAY CAUSE PONDING OF WATER ON ROADWAYS.

WIND GUSTS OF 30 TO 40 MPH AND SMALL HAIL CAN BE EXPECTED WITH THIS
STORM.

&&

LAT...LON 3826 7639 3838 7666 3854 7656 3852 7649
      3848 7648 3839 7637 3836 7638 3833 7640
      3833 7639 3832 7640 3830 7636
TIME...MOT...LOC 1907Z 289DEG 16KT 3842 7651

JRK
Local storm report, Jun 12, 3:18 PM EDT, 45 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
318 PM EDT SUN JUN 12 2011

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

0252 PM     TSTM WND DMG     1 SSW WESTMORELAND      38.07N  78.46W
06/12/2011                   ALBEMARLE          VA   911 CALL CENTER

            TREES DOWN ALONG CHARLOTTESVILLE BYPASS HWY 250

&&

EVENT NUMBER LWX1100945

JACKSON
Special weather statement, Jun 12, 3:24 PM EDT, 39 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
324 PM EDT SUN JUN 12 2011

VAZ028-030-031-042-WVZ053-122000-
WARREN VA-CLARKE VA-LOUDOUN VA-JEFFERSON WV-FREDERICK VA-
324 PM EDT SUN JUN 12 2011

...STRONG THUNDERSTORM TO AFFECT WARREN...CLARKE...LOUDOUN...
JEFFERSON AND FREDERICK COUNTIES...

AT 324 PM EDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 2 MILES
NORTHWEST OF GAYLORD...MOVING EAST AT 30 MPH.

LOCATIONS IMPACTED INCLUDE BLUEMONT...ROUND HILL AND PURCELLVILLE.

STORM INTENSITY IS INCREASING...AND SEVERE WEATHER MAY DEVELOP
RAPIDLY. REMAIN ALERT...AND BE PREPARED TO TAKE ACTION IF WARNINGS
ARE ISSUED.

THIS STORM IS PRODUCING FREQUENT CLOUD TO GROUND LIGHTNING. MOVE
INDOORS IMMEDIATELY FOR YOUR SAFETY. IF YOU CAN HEAR THUNDER...YOU
ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING.

HEAVY RAIN WITH THIS STORM MAY REDUCE VISIBILITIES TO BELOW ONE MILE
AND MAY CAUSE PONDING OF WATER ON ROADWAYS.

WIND GUSTS OF 40 TO 50 MPH AND SMALL HAIL CAN BE EXPECTED WITH THIS
STORM.

&&

LAT...LON 3933 7798 3913 7761 3899 7787 3901 7797
      3894 7804 3915 7830 3930 7808 3927 7804
TIME...MOT...LOC 1924Z 286DEG 24KT 3921 7794

JRK
Local storm report, Jun 12, 3:32 PM EDT, 31 minutes before
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Special weather statement, Jun 12, 3:38 PM EDT, 25 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
338 PM EDT SUN JUN 12 2011

VAZ026-027-029-122015-
PAGE VA-SHENANDOAH VA-ROCKINGHAM VA-
338 PM EDT SUN JUN 12 2011

...STRONG THUNDERSTORM TO AFFECT PAGE...SHENANDOAH AND ROCKINGHAM
COUNTIES...

AT 338 PM EDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 4 MILES
NORTHWEST OF MOUNT JACKSON...MOVING SOUTHEAST AT 25 MPH.

LOCATIONS IMPACTED INCLUDE MOUNT JACKSON...LURAY AND STANLEY.

STORM INTENSITY IS INCREASING...AND SEVERE WEATHER MAY DEVELOP
RAPIDLY. REMAIN ALERT...AND BE PREPARED TO TAKE ACTION IF WARNINGS
ARE ISSUED.

THIS STORM IS PRODUCING FREQUENT CLOUD TO GROUND LIGHTNING. MOVE
INDOORS IMMEDIATELY FOR YOUR SAFETY. IF YOU CAN HEAR THUNDER...YOU
ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING.

HEAVY RAIN WITH THIS STORM MAY REDUCE VISIBILITIES TO BELOW ONE MILE
AND MAY CAUSE PONDING OF WATER ON ROADWAYS.

WIND GUSTS OF 40 TO 50 MPH AND DIME- TO PENNY-SIZED HAIL CAN BE
EXPECTED WITH THIS STORM.

&&

LAT...LON 3872 7890 3896 7858 3874 7828 3873 7832
      3863 7833 3863 7835 3859 7839 3855 7840
      3852 7845 3849 7845
TIME...MOT...LOC 1938Z 301DEG 23KT 3877 7867

JRK
Local storm report, Jun 12, 3:43 PM EDT, 20 minutes before
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The office that day

Everything else NWS Baltimore/Washington issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 11, 9:09 PM EDTSpecial Weather StatementLWXNelson36 min
Jun 11, 9:27 PM EDTSpecial Weather StatementLWXMadison33 min
Jun 11, 9:52 PM EDTSpecial Weather StatementLWXAlbemarle, City of Charlottesville38 min
Jun 12, 1:18 PM EDTSpecial Marine WarningLWX39 min
Jun 12, 1:25 PM EDTSpecial Weather StatementLWXCity of Harrisonburg35 min
Jun 12, 1:41 PM EDTSpecial Weather StatementLWXAugusta, Nelson, City of Staunton, City of Waynesboro34 min
Jun 12, 2:09 PM EDTSpecial Weather StatementLWXAlbemarle, City of Charlottesville, City of Waynesboro36 min
Jun 12, 2:10 PM EDTSevere Thunderstorm WarningLWXFrederick50 min
Jun 12, 2:42 PM EDTSevere Thunderstorm WarningLWXAlbemarle, Nelson, City of Charlottesville48 min
Jun 12, 2:48 PM EDTSpecial Marine WarningLWX87 min
Jun 12, 2:52 PM EDTSpecial Weather StatementLWXNelson23 min
Jun 12, 3:05 PM EDTSpecial Weather StatementLWXShenandoah25 min
Jun 12, 3:16 PM EDTSevere Thunderstorm WarningLWXLoudoun44 min
Jun 12, 3:24 PM EDTSpecial Weather StatementLWXClarke, City of Winchester36 min
Jun 12, 3:32 PM EDTSevere Thunderstorm WarningLWXClarke, Loudoun43 min
Jun 12, 3:34 PM EDTSpecial Marine WarningLWX41 min
Jun 12, 3:38 PM EDTSpecial Weather StatementLWXPage, Shenandoah37 min
Jun 12, 3:50 PM EDTSpecial Marine WarningLWX85 min
Jun 12, 4:05 PM EDTSpecial Weather StatementLWXLoudoun25 min
Jun 12, 4:19 PM EDTSpecial Marine WarningLWX116 min
Jun 12, 4:25 PM EDTSpecial Marine WarningLWX2 hr
Jun 12, 4:34 PM EDTSpecial Weather StatementLWXWarren26 min
Jun 12, 4:36 PM EDTSpecial Weather StatementLWXMadison24 min
Jun 12, 4:45 PM EDTSpecial Weather StatementLWXFairfax, Fauquier, Prince William, City of Fairfax, City of Manassas, City of Manassas Park30 min
Jun 12, 5:00 PM EDTSevere Thunderstorm WarningLWXFairfax, Prince William, City of Alexandria, City of Fairfax, City of Manassas, City of Manassas Park45 min
Jun 12, 5:12 PM EDTSpecial Marine WarningLWX43 min
Jun 12, 5:35 PM EDTSpecial Marine WarningLWX85 min
Jun 12, 5:48 PM EDTSpecial Weather StatementLWXStafford27 min
Jun 12, 5:59 PM EDTSpecial Weather StatementLWXKing George31 min
Jun 12, 6:04 PM EDTSpecial Marine WarningLWX79 min
Jun 12, 6:10 PM EDTSpecial Marine WarningLWX72 min
Jun 12, 6:11 PM EDTSpecial Weather StatementLWXKing George, Stafford, City of Fredericksburg34 min
Jun 12, 6:12 PM EDTSpecial Weather StatementLWXFauquier33 min
Jun 12, 6:14 PM EDTSpecial Weather StatementLWXNelson31 min
Jun 12, 6:30 PM EDTSevere Thunderstorm WarningLWXKing George45 min
Jun 12, 6:36 PM EDTSpecial Marine WarningLWX54 min
Jun 11, 8:00 PM EDTSpecial Weather StatementLWXCarroll30 min
Jun 11, 8:18 PM EDTSevere Thunderstorm WarningLWXBaltimore, Carroll42 min
Jun 11, 8:54 PM EDTSevere Thunderstorm WarningLWXBaltimore, Harford51 min
Jun 11, 9:05 PM EDTSpecial Weather StatementLWXCarroll25 min
Jun 11, 9:45 PM EDTSpecial Weather StatementLWXHarford30 min
Jun 11, 10:13 PM EDTSpecial Weather StatementLWXHarford47 min
Jun 11, 10:55 PM EDTSpecial Weather StatementLWXHarford35 min
Jun 12, 1:09 PM EDTSpecial Weather StatementLWXAnne Arundel36 min
Jun 12, 1:46 PM EDTSpecial Weather StatementLWXAllegany, Washington29 min
Jun 12, 2:56 PM EDTSevere Thunderstorm WarningLWXFrederick, Washington34 min
Jun 12, 3:07 PM EDTSpecial Weather StatementLWXCalvert23 min
Jun 12, 3:12 PM EDTSevere Thunderstorm WarningLWXCalvert, Saint Mary's48 min
Jun 12, 3:45 PM EDTSevere Thunderstorm WarningLWXHarford45 min
Jun 12, 3:52 PM EDTTornado WarningLWXHarford23 min
Jun 12, 4:13 PM EDTTornado WarningLWXHarford47 min
Jun 12, 4:16 PM EDTSpecial Weather StatementLWXBaltimore29 min
Jun 12, 4:26 PM EDTSevere Thunderstorm WarningLWXBaltimore, Harford49 min
Jun 12, 4:41 PM EDTTornado WarningLWXHarford35 min
Jun 12, 4:51 PM EDTSevere Thunderstorm WarningLWXBaltimore, Harford, City of Baltimore39 min
Jun 12, 4:56 PM EDTSpecial Weather StatementLWXPrince George's34 min
Jun 12, 5:24 PM EDTSpecial Weather StatementLWXAnne Arundel36 min
Jun 12, 5:28 PM EDTSpecial Weather StatementLWXCity of Baltimore32 min
Jun 12, 5:32 PM EDTSpecial Weather StatementLWXAnne Arundel28 min
Jun 12, 5:40 PM EDTSevere Thunderstorm WarningLWXCharles, Prince George's37 min
Jun 12, 6:55 PM EDTSpecial Weather StatementLWXAnne Arundel35 min
Jun 12, 3:00 PM EDTSpecial Weather StatementLWXBerkeley, Jefferson30 min

Nearby

Severe Thunderstorm Warnings in Virginia, 2011Every severe thunderstorm warning in 2011

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.