Alert archive / Virginia / Wind Advisories in 2011
Wind Advisory 10, NWS Baltimore/Washington
NWS Baltimore/Washington issued this wind advisory at Apr 16, 2011, 9:20 PM EDT for 17 counties in Virginia; 8 counties in West Virginia; Allegany County, Frederick County, Washington County, Maryland. It took effect at Apr 17, 2011, 3:25 AM EDT. It was in force for 16 hr.
The area
The counties it named.
The facts
- Issued
- Apr 16, 2011, 9:20 PM EDT (01:20 UTC)
- In effect from
- Apr 17, 2011, 3:25 AM EDT
- Expired
- Apr 17, 2011, 7:03 PM EDT
- In force
- 16 hr
- Issued by
- NWS Baltimore/Washington
All 28 counties
Allegany County, MD, Frederick County, MD, Washington County, MD, City of Charlottesville, VA, City of Harrisonburg, VA, City of Staunton, VA, City of Waynesboro, VA, City of Winchester, VA, Clarke County, VA, Fauquier County, VA, Frederick County, VA, Greene County, VA, Highland County, VA, Madison County, VA, Nelson County, VA, Page County, VA, Rappahannock County, VA, Rockingham County, VA, Shenandoah County, VA, Warren County, VA, Berkeley County, WV, Grant County, WV, Hampshire County, WV, Hardy County, WV, Jefferson County, WV, Mineral County, WV, Morgan County, WV, Pendleton County, WV
The radar
The Sterling radar (KLWX), 89 km from the middle of the area, began a volume at 01:22 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 nearest sounding before it
Washington/Dulle, VA (KIAD), launched 00:00Z, 1.3 hours before the alert went out and 96 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 132 J/kg
- Mixed-layer CIN
- -18 J/kg
- Mixed-layer LCL
- 547 m above ground
- 0-6 km bulk shear
- 77 kt
- 0-1 km storm-relative helicity
- 574 m²/s²
- 0-3 km storm-relative helicity
- 593 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.5
The text
As transmitted, in the capitals the NWS used until 2016.
354 WWUS71 KLWX 170120 NPWLWX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 920 PM EDT SAT APR 16 2011 MDZ501-502-VAZ503-504-WVZ501>506-170930- /O.NEW.KLWX.WI.Y.0010.110417T0900Z-110417T2200Z/ EXTREME WESTERN ALLEGANY-CENTRAL AND EASTERN ALLEGANY- WESTERN HIGHLAND-EASTERN HIGHLAND-WESTERN GRANT-EASTERN GRANT- WESTERN MINERAL-EASTERN MINERAL-WESTERN PENDLETON- EASTERN PENDLETON- INCLUDING THE CITIES OF...FROSTBURG...CUMBERLAND...HIGHTOWN... MONTEREY...BAYARD...MOUNT STORM...PETERSBURG...ELK GARDEN... KEYSER...FORT ASHBY...CIRCLEVILLE...FRANKLIN 920 PM EDT SAT APR 16 2011 ...WIND ADVISORY IN EFFECT FROM 5 AM TO 6 PM EDT SUNDAY... THE NATIONAL WEATHER SERVICE IN BALTIMORE MD/WASHINGTON HAS ISSUED A WIND ADVISORY...WHICH IS IN EFFECT FROM 5 AM TO 6 PM EDT SUNDAY. * TIMING...FROM THE PREDAWN HOURS SUNDAY THROUGH EARLY EVENING. * WINDS...WEST 20 TO 30 MPH WITH GUSTS UP TO 50 MPH. THE STRONGEST GUSTS WILL MAINLY AFFECT THE RIDGELINES AND HIGHER ELEVATIONS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WINDS OF 35 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$ MDZ003-VAZ025>031-WVZ050>053-055-170930- /O.NEW.KLWX.WI.Y.0010.110417T1400Z-110417T2200Z/ WASHINGTON-AUGUSTA-ROCKINGHAM-SHENANDOAH-FREDERICK VA-PAGE-WARREN- CLARKE-HAMPSHIRE-MORGAN-BERKELEY-JEFFERSON-HARDY- INCLUDING THE CITIES OF...HAGERSTOWN...STAUNTON...WAYNESBORO... HARRISONBURG...WINCHESTER...FRONT ROYAL...MARTINSBURG... CHARLES TOWN...MOOREFIELD 920 PM EDT SAT APR 16 2011 ...WIND ADVISORY IN EFFECT FROM 10 AM TO 6 PM EDT SUNDAY... THE NATIONAL WEATHER SERVICE IN BALTIMORE MD/WASHINGTON HAS ISSUED A WIND ADVISORY...WHICH IS IN EFFECT FROM 10 AM TO 6 PM EDT SUNDAY. * TIMING...FROM MID MORNING SUNDAY THROUGH EARLY EVENING. * WINDS...WEST 20 TO 25 MPH WITH GUSTS UP TO 50 MPH. THE STRONGEST GUSTS WILL MAINLY AFFECT THE RIDGELINES AND HIGHER ELEVATIONS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WINDS OF 35 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$
5 follow-up statements
509 WWUS71 KLWX 170725 NPWLWX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 325 AM EDT SUN APR 17 2011 MDZ004-VAZ036>040-042-501-171530- /O.EXB.KLWX.WI.Y.0010.110417T1200Z-110418T0000Z/ FREDERICK MD-NELSON-ALBEMARLE-GREENE-MADISON-RAPPAHANNOCK-LOUDOUN- NORTHERN FAUQUIER- INCLUDING THE CITIES OF...FREDERICK...CHARLOTTESVILLE... WASHINGTON...LEESBURG...WARRENTON 325 AM EDT SUN APR 17 2011 ...WIND ADVISORY IN EFFECT FROM 8 AM THIS MORNING TO 8 PM EDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN BALTIMORE MD/WASHINGTON HAS ISSUED A WIND ADVISORY...WHICH IS IN EFFECT FROM 8 AM THIS MORNING TO 8 PM EDT THIS EVENING. * TIMING...THIS MORNING INTO THIS EVENING. * WINDS...WEST 20 TO 30 MPH WITH GUSTS UP TO 50 MPH AT HIGHER ELEVATIONS AND ALONG RIDGELINES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WIND GUSTS IN EXCESS OF 45 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$ MDZ501-502-VAZ503-504-WVZ501>506-171530- /O.EXT.KLWX.WI.Y.0010.110417T0725Z-110418T0000Z/ EXTREME WESTERN ALLEGANY-CENTRAL AND EASTERN ALLEGANY- WESTERN HIGHLAND-EASTERN HIGHLAND-WESTERN GRANT-EASTERN GRANT- WESTERN MINERAL-EASTERN MINERAL-WESTERN PENDLETON- EASTERN PENDLETON- INCLUDING THE CITIES OF...FROSTBURG...CUMBERLAND...HIGHTOWN... MONTEREY...BAYARD...MOUNT STORM...PETERSBURG...ELK GARDEN... KEYSER...FORT ASHBY...CIRCLEVILLE...FRANKLIN 325 AM EDT SUN APR 17 2011 ...WIND ADVISORY NOW IN EFFECT UNTIL 8 PM EDT THIS EVENING... THE WIND ADVISORY IS NOW IN EFFECT UNTIL 8 PM EDT THIS EVENING. * TIMING...THROUGH THE EARLY EVENING. * WINDS...WEST 20 TO 30 MPH WITH GUSTS UP TO 50 MPH AT HIGHER ELEVATIONS AND ALONG RIDGELINES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WIND GUSTS IN EXCESS OF 45 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$ MDZ003-VAZ025>031-WVZ050>053-055-171530- /O.EXT.KLWX.WI.Y.0010.110417T1200Z-110418T0000Z/ WASHINGTON-AUGUSTA-ROCKINGHAM-SHENANDOAH-FREDERICK VA-PAGE-WARREN- CLARKE-HAMPSHIRE-MORGAN-BERKELEY-JEFFERSON-HARDY- INCLUDING THE CITIES OF...HAGERSTOWN...STAUNTON...WAYNESBORO... HARRISONBURG...WINCHESTER...FRONT ROYAL...MARTINSBURG... CHARLES TOWN...MOOREFIELD 325 AM EDT SUN APR 17 2011 ...WIND ADVISORY NOW IN EFFECT FROM 8 AM THIS MORNING TO 8 PM EDT THIS EVENING... THE WIND ADVISORY IS NOW IN EFFECT FROM 8 AM THIS MORNING TO 8 PM EDT THIS EVENING. * TIMING...FROM MID MORNING SUNDAY THROUGH EARLY EVENING. * WINDS...WEST 20 TO 30 MPH WITH GUSTS UP TO 50 MPH AT HIGHER ELEVATIONS AND ALONG RIDGELINES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WIND GUSTS IN EXCESS OF 45 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$ JACKSON
591 WWUS71 KLWX 171424 NPWLWX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 1024 AM EDT SUN APR 17 2011 MDZ501-502-VAZ503-504-WVZ501>506-172230- /O.CON.KLWX.WI.Y.0010.000000T0000Z-110418T0000Z/ EXTREME WESTERN ALLEGANY-CENTRAL AND EASTERN ALLEGANY- WESTERN HIGHLAND-EASTERN HIGHLAND-WESTERN GRANT-EASTERN GRANT- WESTERN MINERAL-EASTERN MINERAL-WESTERN PENDLETON- EASTERN PENDLETON- INCLUDING THE CITIES OF...FROSTBURG...CUMBERLAND...HIGHTOWN... MONTEREY...BAYARD...MOUNT STORM...PETERSBURG...ELK GARDEN... KEYSER...FORT ASHBY...CIRCLEVILLE...FRANKLIN 1024 AM EDT SUN APR 17 2011 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... A WIND ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING. * TIMING...THROUGH THE EARLY EVENING. * WINDS...WEST 20 TO 30 MPH WITH GUSTS UP TO 50 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WIND GUSTS IN EXCESS OF 45 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT... ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$ MDZ003-004-VAZ025>031-036>040-042-501-WVZ050>053-055-172230- /O.CON.KLWX.WI.Y.0010.000000T0000Z-110418T0000Z/ WASHINGTON-FREDERICK MD-AUGUSTA-ROCKINGHAM-SHENANDOAH- FREDERICK VA-PAGE-WARREN-CLARKE-NELSON-ALBEMARLE-GREENE-MADISON- RAPPAHANNOCK-LOUDOUN-NORTHERN FAUQUIER-HAMPSHIRE-MORGAN-BERKELEY- JEFFERSON-HARDY- INCLUDING THE CITIES OF...HAGERSTOWN...FREDERICK...STAUNTON... WAYNESBORO...HARRISONBURG...WINCHESTER...FRONT ROYAL... CHARLOTTESVILLE...WASHINGTON...LEESBURG...WARRENTON... MARTINSBURG...CHARLES TOWN...MOOREFIELD 1024 AM EDT SUN APR 17 2011 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... A WIND ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING. * TIMING...THIS MORNING INTO THIS EVENING. * WINDS...WEST 20 TO 30 MPH WITH GUSTS UP TO 50 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WIND GUSTS IN EXCESS OF 45 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT... ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$
138 WWUS71 KLWX 171912 NPWLWX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 312 PM EDT SUN APR 17 2011 MDZ501-502-VAZ503-504-WVZ501>506-180000- /O.CON.KLWX.WI.Y.0010.000000T0000Z-110418T0000Z/ EXTREME WESTERN ALLEGANY-CENTRAL AND EASTERN ALLEGANY- WESTERN HIGHLAND-EASTERN HIGHLAND-WESTERN GRANT-EASTERN GRANT- WESTERN MINERAL-EASTERN MINERAL-WESTERN PENDLETON- EASTERN PENDLETON- INCLUDING THE CITIES OF...FROSTBURG...CUMBERLAND...HIGHTOWN... MONTEREY...BAYARD...MOUNT STORM...PETERSBURG...ELK GARDEN... KEYSER...FORT ASHBY...CIRCLEVILLE...FRANKLIN 312 PM EDT SUN APR 17 2011 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... A WIND ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING. * TIMING...THROUGH THE EARLY EVENING. * WINDS...WEST 20 TO 30 MPH WITH GUSTS UP TO 50 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WIND GUSTS IN EXCESS OF 45 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT... ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$ MDZ003-004-VAZ025>031-036>040-042-501-WVZ050>053-055-180000- /O.CON.KLWX.WI.Y.0010.000000T0000Z-110418T0000Z/ WASHINGTON-FREDERICK MD-AUGUSTA-ROCKINGHAM-SHENANDOAH- FREDERICK VA-PAGE-WARREN-CLARKE-NELSON-ALBEMARLE-GREENE-MADISON- RAPPAHANNOCK-LOUDOUN-NORTHERN FAUQUIER-HAMPSHIRE-MORGAN-BERKELEY- JEFFERSON-HARDY- INCLUDING THE CITIES OF...HAGERSTOWN...FREDERICK...STAUNTON... WAYNESBORO...HARRISONBURG...WINCHESTER...FRONT ROYAL... CHARLOTTESVILLE...WASHINGTON...LEESBURG...WARRENTON... MARTINSBURG...CHARLES TOWN...MOOREFIELD 312 PM EDT SUN APR 17 2011 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... A WIND ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING. * TIMING...THIS MORNING INTO THIS EVENING. * WINDS...WEST 20 TO 30 MPH WITH GUSTS UP TO 50 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WIND GUSTS IN EXCESS OF 45 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT... ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$
396 WWUS71 KLWX 172149 NPWLWX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 549 PM EDT SUN APR 17 2011 VAZ025>027-029-030-036>040-042-501-172300- /O.CAN.KLWX.WI.Y.0010.000000T0000Z-110418T0000Z/ AUGUSTA-ROCKINGHAM-SHENANDOAH-PAGE-WARREN-NELSON-ALBEMARLE-GREENE- MADISON-RAPPAHANNOCK-LOUDOUN-NORTHERN FAUQUIER- INCLUDING THE CITIES OF...STAUNTON...WAYNESBORO...HARRISONBURG... FRONT ROYAL...CHARLOTTESVILLE...WASHINGTON...LEESBURG...WARRENTON 549 PM EDT SUN APR 17 2011 ...WIND ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN BALTIMORE MD/WASHINGTON HAS CANCELLED THE WIND ADVISORY. $$ MDZ501-502-VAZ503-504-WVZ501>506-180000- /O.CON.KLWX.WI.Y.0010.000000T0000Z-110418T0000Z/ EXTREME WESTERN ALLEGANY-CENTRAL AND EASTERN ALLEGANY- WESTERN HIGHLAND-EASTERN HIGHLAND-WESTERN GRANT-EASTERN GRANT- WESTERN MINERAL-EASTERN MINERAL-WESTERN PENDLETON- EASTERN PENDLETON- INCLUDING THE CITIES OF...FROSTBURG...CUMBERLAND...HIGHTOWN... MONTEREY...BAYARD...MOUNT STORM...PETERSBURG...ELK GARDEN... KEYSER...FORT ASHBY...CIRCLEVILLE...FRANKLIN 549 PM EDT SUN APR 17 2011 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... A WIND ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING. * TIMING...THROUGH THE EARLY EVENING. * WINDS...WEST 20 TO 30 MPH WITH GUSTS UP TO 50 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WIND GUSTS IN EXCESS OF 45 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT... ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$ MDZ003-004-VAZ028-031-WVZ050>053-055-180000- /O.CON.KLWX.WI.Y.0010.000000T0000Z-110418T0000Z/ WASHINGTON-FREDERICK MD-FREDERICK VA-CLARKE-HAMPSHIRE-MORGAN- BERKELEY-JEFFERSON-HARDY- INCLUDING THE CITIES OF...HAGERSTOWN...FREDERICK...WINCHESTER... MARTINSBURG...CHARLES TOWN...MOOREFIELD 549 PM EDT SUN APR 17 2011 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... A WIND ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING. * TIMING...THIS MORNING INTO THIS EVENING. * WINDS...WEST 20 TO 30 MPH WITH GUSTS UP TO 50 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WIND GUSTS IN EXCESS OF 45 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT... ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$
642 WWUS71 KLWX 172303 NPWLWX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 703 PM EDT SUN APR 17 2011 MDZ003-004-501-502-VAZ028-031-503-504-WVZ050>053-055-501>506- 180015- /O.CAN.KLWX.WI.Y.0010.000000T0000Z-110418T0000Z/ WASHINGTON-FREDERICK MD-EXTREME WESTERN ALLEGANY- CENTRAL AND EASTERN ALLEGANY-FREDERICK VA-CLARKE-WESTERN HIGHLAND- EASTERN HIGHLAND-HAMPSHIRE-MORGAN-BERKELEY-JEFFERSON-HARDY- WESTERN GRANT-EASTERN GRANT-WESTERN MINERAL-EASTERN MINERAL- WESTERN PENDLETON-EASTERN PENDLETON- INCLUDING THE CITIES OF...HAGERSTOWN...FREDERICK...FROSTBURG... CUMBERLAND...WINCHESTER...HIGHTOWN...MONTEREY...MARTINSBURG... CHARLES TOWN...MOOREFIELD...BAYARD...MOUNT STORM...PETERSBURG... ELK GARDEN...KEYSER...FORT ASHBY...CIRCLEVILLE...FRANKLIN 703 PM EDT SUN APR 17 2011 ...WIND ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN BALTIMORE MD/WASHINGTON HAS CANCELLED THE WIND ADVISORY. $$
What forecasters said that day
The local office's own words before this wind advisory 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 wind advisory went out at Apr 16, 8:10 PM EDT, 1 hour 10 minutes earlier.
Area forecast discussion, Apr 16, 8:10 PM EDT, 1 hour 10 minutes before
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
810 PM EDT SAT APR 16 2011
.SYNOPSIS...
A COLD FRONT WILL MOVE THROUGH THE MID ATLANTIC THIS EVENING. HIGH
PRESSURE RETURNS SUNDAY AND MONDAY AND MOVES OFFSHORE ON TUESDAY.
A COLD FRONT WILL MOVE THROUGH THE REGION ON WEDNESDAY...WITH HIGH
PRESSURE BUILDING IN FOR THE REMAINDER OF THE WEEK.
&&
.NEAR TERM /THROUGH SUNDAY/...
UPDATE...THE FIRST SEGMENT /THE WRN SEGMENT/ OF THE FLOOD WATCH
HAS EXPIRED.
FROM PREV DISC...
THE LAST LINE OF CONVECTION NOW CLEARING THE BLUE RIDGE AND WILL
CONTINUE ON TOWARD THE I-95 CORRIDOR - REACHING THE METRO AREAS
BETWEEN 8-10 PM. PORTIONS OF THIS LINE MAY STILL PRODUCE SEVERE WX
/MAINLY WIND DAMAGE AND SOME SMALL HAIL AT THIS POINT/. THE SHARP
HELICITY VALUES FROM THE VERY TURBULENT ATMS MAY DEVELOP A FEW
QUICK CIRCULATIONS THAT COULD BECOME TORNADIC.
LINES OF STORMS WILL CONTINUE EASTWARD INTO THE METRO AREAS
DURING THE REMAINDER OF THE AFTERNOON INTO THE EVENING HOURS.
THUNDERSTORMS ALONG THIS LINE WILL BE CAPABLE OF PRODUCING
DAMAGING WIND GUSTS...AND A FEW TORNADOES. THE POTENTIAL FOR
SEVERE WEATHER SHOULD DIMINISH AFTER 8 PM. SHOWERS WILL LINGER
UNTIL THE FROPA LATER THIS EVENING FOR MOST AREAS THIS EVENING. A
FEW UPSLOPE RA/SN SHOWERS POSSIBLE ALONG THE WESTERN SLOPES OF THE
POTOMAC HIGHLANDS OVERNIGHT.
STRONG SE WINDS WILL CONTINUE THIS AFTERNOON. OCCASIONAL GUSTS TO
AROUND 50 MPH HAVE BEEN REPORTED IN THE WIND ADVISORY AREA.
OUTSIDE THE WIND ADVISORY...FREQUENT GUSTS AROUND 30 KT HAVE BEEN
REPORTED. WILL GO AHEAD AND KEEP THE WIND ADVISORY IN EFFECT.
&&
.SHORT TERM /SUNDAY NIGHT THROUGH 6 PM SUNDAY/...
HIGH PRESSURE WILL BUILD IN ACROSS THE CWFA ON SUNDAY. PRECIP
ALONG THE WESTERN SLOPES SHOULD END DURING THE EARLY MORNING
HOURS. WINDS MAY BE AN ISSUE TOMORROW...AND DO HAVE NEAR WIND
ADVISORY CRITERIA ACROSS THE HIGHER ELEVATIONS AND MASON DIXON
LINE. A WIND ADVISORY MAY BE NEEDED. EVEN IF WINDS DO NOT REACH
CRITERIA...WITH THE SATURATED SOILS...DOWNED TREES WILL BE AN
ISSUE.
&&
.LONG TERM /SUNDAY NIGHT THROUGH SATURDAY/...
A STATIONARY BOUNDARY WILL REMAIN NEAR THE MASON DIXON LINE EARLY
NEXT WEEK...BRINGING A CHANCE FOR SHOWERS ACROSS THE NORTHERN
PORTION OF THE CWA. DRY AND MILD CONDITIONS ARE EXPECTED FURTHER
SOUTH. THE STATIONARY BOUNDARY WILL MOVE NORTH AS A WARM FRONT
WEDNESDAY AND IT WILL TURN WARM AND BREEZY WEDNESDAY AFTERNOON
ACROSS THE ENTIRE AREA. A COLD FRONT WILL APPROACH THE AREA LATER
WEDNESDAY AFTERNOON INTO WEDNESDAY NIGHT...BRINGING POSSIBLE SHOWERS
AND THUNDERSTORMS.
HIGH PRESSURE WILL BRIEFLY BUILD OVERHEAD THURSDAY BEFORE MOVING OFF
THE COAST FRIDAY INTO THE WEEKEND. AN ONSHORE FLOW WILL BRING MORE
CLOUDS ALONG WITH THE CHANCE FOR RAIN DURING THIS TIME.
&&
.AVIATION /00Z SUNDAY THROUGH THURSDAY/...
WIDESPREAD SUB VFR CONDITIONS THIS EVENING AS A COLD FRONT MOVES
ACROSS THE MID ATLANTIC. THUNDERSTORMS WILL BE CAPABLE OF LOW
CIGS/VSBYS IN THE HEAVY RAIN. VERY GUSTY WINDS IN THUNDERSTORMS LIKELY.
IN ADDITION TO THE GUSTY THUNDERSTORMS...GRADIENT WINDS WILL ALSO
BE AN ISSUE. STRONG SE WINDS WILL CONTINUE WITH FREQUENT GUSTS TO
AROUND 30 KT LIKELY. AFTER THE FRONT...WINDS WILL SHIFT AROUND TO
THE WEST. GUSTY WINDS OUT OF THE WEST ARE ANTICIPATED
TOMORROW...WITH FREQUENT GUSTS BETWEEN 30 AND 35 KT.
VFR CONDITIONS EXPECTED FOR EARLY NEXT WEEK. A COLD FRONT WILL BRING
A CHANCE FOR SHOWERS AND THUNDERSTORMS LATER WEDNESDAY INTO
WEDNESDAY NIGHT.
&&
.MARINE...
STRONG SE WINDS CONTINUE ACROSS THE WATERS THIS AFTERNOON. THE SE
FLOW WILL CONTNUE UNTIL AFTER A FRONTAL PASSAGE THIS EVENING.
FREQUEST GUSTS TO BETWEEN 35 AND 40 KT HAVE BEEN REPORTED. BEHIND
THE FROPA LATE THIS EVENING...WINDS MAY DIP BELOW GALE FORCE FOR A
FEW HOURS BUT WILL SHIFT TO THE WEST. WINDS MAY APPROACH GALE
FORCE AGAIN ON SUNDAY.
A SMALL CRAFT ADVISORY MAY BE WARRANTED FOR THE WATERS SUNDAY
NIGHT. HIGH PRESSURE WILL BUILD OVER THE WATERS EARLY NEXT WEEK. A
COLD FRONT WILL PASS THROUGH LATER WEDNESDAY. A SMALL CRAFT ADVISORY
MAY BE WARRANTED FOR THE WATERS WEDNESDAY INTO WEDNESDAY NIGHT.
&&
.HYDROLOGY...
FLASH FLOOD WATCH REMAINS IN EFFECT FOR AREAS MAINLY ALONG AND
WEST OF THE INTERSTATE 95 CORRIDOR. REPORTS OF FLOODING CONTINUE
TO COME INTO THE OFFICE. WIDESPREAD VALUES BETWEEN ONE AND THREE
INCHES LIKELY...WITH LOCALLY HIGHER AMOUNTS EXPECTED.
&&
.TIDES/COASTAL FLOODING...
WATER LEVELS ARE RUNNING AROUND 2 FT ABOVE NORMAL THIS AFTERNOON.
HIGH TIDE HASN'T EVEN OCCURED IN MANY PLACES...AND EXPECT WATER
LEVELS TO CONTINUE CREEPING UPWARDS. HAVE ISSUED A COASTAL FLOOD
WARNING FOR THE ENTIRE TIDAL POTOMAC AND WESTERN SHORE OF THE
MARYLAND CHESAPEAKE BAY. DO THINK WATER LEVELS WILL REMAIN
ELEVEATED THROUGH THE EVENING AND SUNDAY MORNING HIGH TIDE CYCLES.
&&
.LWX WATCHES/WARNINGS/ADVISORIES...
DC...COASTAL FLOOD WARNING UNTIL 11 AM EDT SUNDAY FOR DCZ001.
FLASH FLOOD WATCH UNTIL 11 PM EDT THIS EVENING FOR DCZ001.
MD...COASTAL FLOOD WARNING UNTIL 11 AM EDT SUNDAY FOR MDZ007-011-
013-014-016>018.
FLASH FLOOD WATCH UNTIL 11 PM EDT THIS EVENING FOR MDZ004>007-
009>011.
VA...COASTAL FLOOD WARNING UNTIL 11 AM EDT SUNDAY FOR VAZ052>055-
057.
FLASH FLOOD WATCH UNTIL 11 PM EDT THIS EVENING FOR VAZ042-
052>056-501-502.
WV...NONE.
MARINE...SMALL CRAFT ADVISORY FROM 6 AM TO 6 PM EDT SUNDAY FOR
ANZ530>543.
GALE WARNING UNTIL 6 AM EDT SUNDAY FOR ANZ530>543.
&&
UPDATE...GMS
PREV DISCUSSION...LISTEMAA/LASORSAHazardous weather outlook, Apr 16, 9:14 PM EDT, 6 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 914 PM EDT SAT APR 16 2011 ANZ530>543-DCZ001-MDZ006-007-011-013-014-016>018-VAZ052>057- 171315- 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- 914 PM EDT SAT APR 16 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...TONIGHT A COASTAL FLOOD WARNING HAS BEEN ISSUED ALONG THE TIDAL POTOMAC AND WESTERN SHORE OF THE CHESAPEAKE BAY THROUGH TONIGHT. WATER LEVELS OF 2 TO 3 FEET ABOVE NORMAL ARE ANTICIPATED. PLEASE REFER TO THE LATEST HAZARD MESSAGE /CFWLWX/ FOR DETAILS. A GALE WARNING IS IN EFFECT THROUGH TONIGHT FOR THE MARYLAND CHESAPEAKE BAY AND TIDAL POTOMAC RIVER. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY THE COASTAL FLOOD WARNING REMAINS IN EFFECT THROUGH 11 AM SUNDAY MORNING. A SMALL CRAFT ADVISORY IS IN EFFECT SUNDAY FOR THE MARYLAND CHESAPEAKE BAY AND TIDAL POTOMAC RIVER...BUT A PERIOD OF GALE CONDITIONS IS POSSIBLE. A SMALL CRAFT ADVISORY MAY BE NEEDED FOR PORTIONS OF THE WATERS SUNDAY EVENING AND TUESDAY THROUGH WEDNESDAY. .SPOTTER INFORMATION STATEMENT... SKYWARN HAS BEEN DEACTIVATED FOR THE EVENING. PLEASE RELAY ANY SEVERE WEATHER REPORTS FROM EARLIER TODAY TO THE NATIONAL WEATHER SERVICE OR LOCAL LAW ENFORCEMENT. MDZ003>005-009-010-501-502-VAZ025>031-036>040-042-050-051-501>504- WVZ050>053-055-501>506-171315- 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- 914 PM EDT SAT APR 16 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...TONIGHT HEAVY RAIN WITH THESE STORMS COULD LEAD TO FLASH FLOODING AND RIVER FLOODING. A FLASH FLOOD WATCH REMAINS IN EFFECT FOR AREAS EAST OF THE BLUE RIDGE. PLEASE REFER TO THE LATEST HAZARD MESSAGE /FFALWX/ FOR DETAILS. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY A WIND ADVISORY IS IN EFFECT FOR AREAS WEST OF THE BLUE RIDGE FROM EARLY SUNDAY MORNING THROUGH SUNDAY EVENING. HEAVY RAIN FROM SATURDAY STORMS COULD LEAD TO MINOR RIVER FLOODING ON SUNDAY. SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED WEDNESDAY AFTERNOON AND EVENING PRIMARILY ALONG AND WEST OF THE BLUE RIDGE. SOME STORMS COULD BECOME SEVERE...WITH DAMAGING WIND GUSTS AND LARGE HAIL THE PRIMARY THREATS. .SPOTTER INFORMATION STATEMENT... SKYWARN HAS BEEN DEACTIVATED FOR THE EVENING. PLEASE RELAY ANY SEVERE WEATHER REPORTS FROM EARLIER TODAY TO THE NATIONAL WEATHER SERVICE OR LOCAL LAW ENFORCEMENT.
In the hours before
Local storm report, Apr 16, 8:40 PM EDT, 40 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
840 PM EDT SAT APR 16 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0803 PM TSTM WND DMG 2 ENE CARROLLTON 39.58N 76.88W
04/16/2011 CARROLL MD TRAINED SPOTTER
SEVERAL SMALL BRANCHES BROUGHT DOWN FROM THUNDERSTORM
WINDS.
&&
EVENT NUMBER LWX1100352
KLWLocal storm report, Apr 16, 8:49 PM EDT, 31 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
849 PM EDT SAT APR 16 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0830 PM FLOOD 1 E BLOOMERY 39.25N 77.80W
04/16/2011 JEFFERSON WV EMERGENCY MNGR
MUDSLIDE AND FLOODED BASEMENTS ATOP THE MOUNTAIN NEAR
THE LOUDOUN COUNTY BORDER.
&&
EVENT NUMBER LWX1100353
JESpecial weather statement, Apr 16, 8:52 PM EDT, 28 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
852 PM EDT SAT APR 16 2011
MDZ006-007-010-011-014-170115-
NORTHERN BALTIMORE MD-HOWARD MD-ANNE ARUNDEL MD-HARFORD MD-
SOUTHERN BALTIMORE MD-
852 PM EDT SAT APR 16 2011
...STRONG THUNDERSTORMS TO AFFECT NORTHERN BALTIMORE...HOWARD...ANNE
ARUNDEL...HARFORD AND SOUTHERN BALTIMORE COUNTIES...
AT 852 PM EDT...DOPPLER RADAR INDICATED A RAPIDLY DEVELOPING
THUNDERSTORM OVER HARMANS...MOVING NORTHEAST AT 75 MPH.
LOCATIONS IMPACTED INCLUDE DUNDALK...TURNERS STATION...EASTPOINT...
BACK RIVER...ESSEX...BALTIMORE MARTIN STATE...BOWLEYS QUARTERS...
MIDDLE RIVER...CHASE AND EDGEWOOD.
STORM INTENSITY IS INCREASING...AND SEVERE WEATHER MAY DEVELOP
RAPIDLY. REMAIN ALERT...AND BE PREPARED TO TAKE ACTION IF WARNINGS
ARE ISSUED.
WIND GUSTS OF 40 TO 50 MPH AND SMALL HAIL CAN BE EXPECTED WITH THIS
STORM.
&&
LAT...LON 3934 7622 3934 7623 3940 7626 3938 7627
3929 7625 3928 7627 3938 7633 3930 7631
3930 7637 3925 7640 3924 7636 3919 7644
3926 7660 3912 7642 3903 7669 3917 7684
3960 7612
TIME...MOT...LOC 0052Z 229DEG 63KT 3917 7665
HTSLocal storm report, Apr 16, 9:00 PM EDT, 20 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
900 PM EDT SAT APR 16 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0220 PM TSTM WND DMG STUARTS DRAFT 38.03N 79.02W
04/16/2011 AUGUSTA VA FIRE DEPT/RESCUE
A COUPLE OF BUILDINGS COLLAPSED NEAR STUARTS DRAFT.
0225 PM TORNADO 2 WSW STUARTS DRAFT 38.01N 79.07W
04/16/2011 AUGUSTA VA NWS STORM SURVEY
TORNADO CONFIRMED EF-1. MAX WINDS 95 MPH. MAX PATH
WIDTH 300 YRDS. PATH LENGTH 4 MILES. NUMEROUS TREES
SNAPPED. SEVERAL BARNS DEMOLISHED.
0249 PM TSTM WND GST 4 NW WINTERGREEN 37.92N 78.95W
04/16/2011 M68 MPH NELSON VA MESONET
0250 PM FLOOD 2 NNW MARTINSBURG ARPT 39.42N 77.99W
04/16/2011 BERKELEY WV TRAINED SPOTTER
WATER ESTIMATED AT 4 INCHES DEEP FLOWING ACROSS
PIKEVIEW DRIVE
0300 PM HAIL FRANKLIN 38.64N 79.33W
04/16/2011 E0.88 INCH PENDLETON WV FIRE DEPT/RESCUE
DIME TO NICKEL SIZE HAIL AT FRANKLIN.
0315 PM TSTM WND DMG 2 NW TOMAHAWK 39.55N 78.07W
04/16/2011 BERKELEY WV FIRE DEPT/RESCUE
TREE DOWN ON BUTTS MILL ROAD.
0316 PM FLASH FLOOD 2 E AFTON 38.03N 78.81W
04/16/2011 ALBEMARLE VA FIRE DEPT/RESCUE
STRUCTURAL DAMAGE FROM FLASH FLOODING WAS REPORTED AT A
HOME NEAR THE INTERSECTION OF ROUTES 250 AND 151.
0337 PM TSTM WND DMG BARRACKS 38.06N 78.51W
04/16/2011 CITY OF CHARLOTTES VA FIRE DEPT/RESCUE
A TREE FELL ONTO A HOUSE ALONG WESTMINSTER ROAD.
0341 PM TSTM WND DMG 1 WSW NEWCOMB HALL 38.03N 78.53W
04/16/2011 ALBEMARLE VA NWS EMPLOYEE
TREE DOWN OVER ROAD
0345 PM FLASH FLOOD 1 S FRONT ROYAL 38.91N 78.19W
04/16/2011 WARREN VA PUBLIC
BRIDGE WASHED OUT ON CRISER ROAD AT HAPPY CREEK.
0350 PM FLASH FLOOD 2 SSE FRONT ROYAL 38.90N 78.17W
04/16/2011 WARREN VA TRAINED SPOTTER
0350 PM TSTM WND DMG SHELBY 38.32N 78.31W
04/16/2011 MADISON VA FIRE DEPT/RESCUE
TREE DOWN ALONG SHELBY ROAD.
0355 PM FLOOD 2 SSE SHANGHAI 39.41N 78.11W
04/16/2011 BERKELEY WV TRAINED SPOTTER
WATER 4 TO 5 INCHES DEEP FLOWING ACROSS BUCK HILL ROAD.
ROAD CLOSED. IMPASSABLE.
0400 PM HAIL 3 S FRANKLIN 39.45N 79.05W
04/16/2011 M0.75 INCH MINERAL WV TRAINED SPOTTER
0400 PM FLASH FLOOD 1 ESE WAYNESBORO 38.07N 78.88W
04/16/2011 CITY OF WAYNESBORO VA EMERGENCY MNGR
*** 1 FATAL *** FLASH FLOODING ON ROCKFISH RUN.
0428 PM TSTM WND DMG SLANESVILLE 39.37N 78.52W
04/16/2011 HAMPSHIRE WV FIRE DEPT/RESCUE
TREE DOWN IN SLANESVILLE.
0429 PM TSTM WND DMG 1 SSE GROTTOES 38.25N 78.81W
04/16/2011 ROCKINGHAM VA TRAINED SPOTTER
0446 PM FLOOD CAPON SPRINGS 39.14N 78.48W
04/16/2011 HAMPSHIRE WV FIRE DEPT/RESCUE
SMALL STREAMS ARE OUT OF THEIR BANKS NEAR CAPON
SPRINGS.
0446 PM TSTM WND DMG 2 E BELMONT 38.16N 77.82W
04/16/2011 SPOTSYLVANIA VA FIRE DEPT/RESCUE
TREE FELL ONTO A VEHICLE AT THE INTERSECTION OF STUBBS
BRIDGE ROAD AND LAWYERS ROAD.
0459 PM HAIL 1 SW MANASSAS PARK 38.78N 77.48W
04/16/2011 M0.75 INCH CITY OF MANASSAS VA TRAINED SPOTTER
DIME SIZE HAIL IN MANASSES AT 459 PM
0500 PM NON-TSTM WND DMG ELKRIDGE 39.20N 76.75W
04/16/2011 HOWARD MD FIRE DEPT/RESCUE
TREES DOWN AT ELK RIDGE AND COLUMBIA.
0515 PM FLOOD 1 E SHANGHAI 39.44N 78.11W
04/16/2011 BERKELEY WV PUBLIC
BACK CREEK IS OVER ITS BANKS EAST OF SHANGHAI. BUCK
HILL ROAD IS CLOSED.
0515 PM FLOOD 3 SW OMPS 39.48N 78.32W
04/16/2011 MORGAN WV FIRE DEPT/RESCUE
OLD BLUE RIDGE TURNPIKE CLOSED DUE TO FLOODING.
0517 PM FLOOD 2 NE GRANITE 39.36N 76.83W
04/16/2011 BALTIMORE MD TRAINED SPOTTER
WATER ON ROAD AT 8800 MILLER ISLAND ROAD.
0536 PM FLOOD 2 NE JEROME 38.88N 78.70W
04/16/2011 SHENANDOAH VA FIRE DEPT/RESCUE
LIBERTY FURNACE ROAD CLOSED DUE TO FLOODING. NUMEROUS
OTHER ROADS WERE CLOSED DUE TO FLOODING THROUGHOUT THE
COUNTY.
0540 PM TSTM WND DMG FINKSBURG 39.49N 76.89W
04/16/2011 CARROLL MD FIRE DEPT/RESCUE
TREES DOWN NEAR ROUTE 140.
0541 PM FLOOD 1 ENE FRONT ROYAL 38.93N 78.16W
04/16/2011 WARREN VA TRAINED SPOTTER
SEVERAL PTS ARE FLOODED
0545 PM NON-TSTM WND DMG CARNEY 39.40N 76.53W
04/16/2011 BALTIMORE MD TRAINED SPOTTER
TREE DOWN.
0548 PM TSTM WND DMG 2 ENE CARROLLTON 39.58N 76.88W
04/16/2011 CARROLL MD TRAINED SPOTTER
LARGE 3 TO 4 INCH DIAMETER BRANCHES BROUGHT DOWN FROM
THUNDERSTORM WINDS.
0610 PM NON-TSTM WND DMG BETHESDA 38.99N 77.12W
04/16/2011 MONTGOMERY MD FIRE DEPT/RESCUE
TREES DOWN IN BETHESDA DUE TO GUSTY WINDS.
0634 PM HAIL 1 WSW FRONT ROYAL 38.92N 78.20W
04/16/2011 E1.00 INCH WARREN VA PUBLIC
HAIL UP TO QUARTERS IN SIZE.
0640 PM FLOOD 2 WNW LEHEW 39.21N 78.48W
04/16/2011 HAMPSHIRE WV TRAINED SPOTTER
MEASURED 3.1 INCHS OF RAIN STORM TOTAL. SMALL STREAMS
WERE OUT OF THEIR BANKS.
0712 PM TSTM WND DMG 1 W LEESBURG 39.10N 77.57W
04/16/2011 LOUDOUN VA TRAINED SPOTTER
LARGE SIGN TORN DOWN AND A LOT OF TREES BLOWN DOWN NEAR
SOUTH KING STREET AND DAVIS AVENUE IN LEESBURG
0715 PM FLOOD 1 N PURCELLVILLE 39.15N 77.71W
04/16/2011 LOUDOUN VA AMATEUR RADIO
CATOCTIN CREEK OUT OF ITS BANKS NEAR ROUTE 690
0745 PM TSTM WND DMG 3 SSE UNIONVILLE 39.43N 77.15W
04/16/2011 FREDERICK MD TRAINED SPOTTER
LARGE BRANCHES DOWN.
0750 PM TSTM WND DMG 2 W WINFIELD 39.45N 77.09W
04/16/2011 CARROLL MD EMERGENCY MNGR
BARN MOVED OFF FOUNDATION AND ONTO MD HWY 27 NEAR
BRADDOCK RD ALONG WITH TREE DAMAGE.
0800 PM TSTM WND DMG WESTMINSTER 39.58N 77.01W
04/16/2011 CARROLL MD FIRE DEPT/RESCUE
NUMEROUS TREES DOWN ACROSS THE COUNTY.
0803 PM TSTM WND DMG 2 ENE CARROLLTON 39.58N 76.88W
04/16/2011 CARROLL MD TRAINED SPOTTER
SEVERAL SMALL BRANCHES BROUGHT DOWN FROM THUNDERSTORM
WINDS.
0830 PM FLOOD 1 NNE THURMONT 39.64N 77.40W
04/16/2011 FREDERICK MD TRAINED SPOTTER
RODDY CREEK ROAD WAS CLOSED NEAR ROUTE 15.
0830 PM FLOOD 1 E BLOOMERY 39.25N 77.80W
04/16/2011 JEFFERSON WV EMERGENCY MNGR
MUDSLIDE AND FLOODED BASEMENTS ATOP THE MOUNTAIN NEAR
THE LOUDOUN COUNTY BORDER.
0835 PM FLOOD HARPERS FERRY 39.33N 77.74W
04/16/2011 JEFFERSON WV AMATEUR RADIO
WATER CASCADING DOWN CHESTNUT HILL ROAD TOWARD US
HIGHWAY 340. ROAD CLOSED.
&&
EVENT NUMBER LWX1100320 LWX1100351 LWX1100313 LWX1100316 LWX1100334
LWX1100332 LWX1100317 LWX1100319 LWX1100336 LWX1100340 LWX1100315
LWX1100327 LWX1100318 LWX1100314 LWX1100345 LWX1100323 LWX1100321
LWX1100322 LWX1100325 LWX1100324 LWX1100337 LWX1100328 LWX1100329
LWX1100326 LWX1100330 LWX1100338 LWX1100331 LWX1100333 LWX1100350
LWX1100335 LWX1100339 LWX1100341 LWX1100343 LWX1100342 LWX1100344
LWX1100347 LWX1100346 LWX1100352 LWX1100348 LWX1100353 LWX1100349
GMSLocal storm report, Apr 16, 9:10 PM EDT, 10 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
910 PM EDT SAT APR 16 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0716 PM TSTM WND DMG 1 W LEESBURG 39.10N 77.57W
04/16/2011 LOUDOUN VA TRAINED SPOTTER
LARGE SIGN TORN DOWN AND A LOT OF TREES BLOWN DOWN NEAR
SOUTH KING STREET AND DAVIS AVENUE IN LEESBURG
&&
CORRECTED EVENT TIME
EVENT NUMBER LWX1100343
LEESpecial weather statement, Apr 16, 9:16 PM EDT, 4 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
916 PM EDT SAT APR 16 2011
MDZ006-007-011-170145-
NORTHERN BALTIMORE MD-HARFORD MD-SOUTHERN BALTIMORE MD-
916 PM EDT SAT APR 16 2011
...STRONG THUNDERSTORMS TO AFFECT NORTHERN BALTIMORE...HARFORD AND
SOUTHERN BALTIMORE COUNTIES...
AT 915 PM EDT...DOPPLER RADAR INDICATED STRONG THUNDERSTORMS ALONG A
LINE EXTENDING FROM 3 MILES EAST OF CARDIFF TO WHITE MARSH...MOVING
EAST AT 30 MPH.
LOCATIONS IMPACTED THROUGH 9:45 PM INCLUDE PERRYMAN...ABERDEEN AND
HAVRE DE GRACE.
WIND GUSTS OF 40 TO 50 MPH CAN BE EXPECTED WITH THIS STORM.
&&
LAT...LON 3941 7615 3934 7622 3937 7626 3940 7626
3937 7627 3932 7625 3931 7628 3931 7630
3938 7633 3931 7632 3931 7657 3972 7637
3973 7623 3956 7608 3950 7611 3948 7606
3945 7605
TIME...MOT...LOC 0115Z 270DEG 24KT 3971 7626 3939 7642
HTSThe office that day
Everything else NWS Baltimore/Washington issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 16, 8:08 PM EDT | Areal Flood Warning | LWX | Clarke, Fauquier, Frederick, Page, Rappahannock, Shenandoah and 2 more | 14 hr |
| Apr 16, 8:25 PM EDT | Special Marine Warning | LWX | 95 min | |
| Apr 16, 8:34 PM EDT | Special Weather Statement | LWX | Orange, Stafford, City of Fredericksburg | 56 min |
| Apr 16, 10:14 PM EDT | River Flood Warning | LWX | Loudoun | 42 hr |
| Apr 16, 10:14 PM EDT | River Flood Warning | LWX | Fairfax | 58 hr |
| Apr 16, 10:21 PM EDT | River Flood Warning | LWX | Culpeper, Fauquier | 31 hr |
| Apr 16, 10:24 PM EDT | River Flood Warning | LWX | Rockingham | 16 hr |
| Apr 16, 10:24 PM EDT | River Flood Warning | LWX | Clarke, Warren | 40 hr |
| Apr 16, 10:28 PM EDT | River Flood Warning | LWX | Shenandoah | 30 hr |
| Apr 16, 10:28 PM EDT | River Flood Warning | LWX | Clarke | 47 hr |
| Apr 16, 11:27 PM EDT | Areal Flood Warning | LWX | Clarke, Frederick | 17 hr |
| Apr 17, 3:18 AM EDT | Gale Warning | LWX | 15 hr | |
| Apr 17, 3:18 AM EDT | Small Craft Advisory | LWX | 23 hr | |
| Apr 17, 3:40 AM EDT | River Flood Warning | LWX | Loudoun | 16 hr |
| Apr 17, 4:02 AM EDT | Special Weather Statement | LWX | Clarke, Culpeper, Fauquier, Frederick, Loudoun, Madison and 5 more | 58 min |
| Apr 17, 11:06 AM EDT | Coastal Flood Advisory | LWX | Arlington, City of Alexandria, City of Falls Church | 13 hr |
| Apr 16, 10:01 PM EDT | River Flood Warning | LWX | Grant | 4 hr |
| Apr 16, 10:01 PM EDT | River Flood Warning | LWX | Hampshire | 24 hr |
| Apr 16, 8:02 PM EDT | Tornado Warning | LWX | Baltimore, Carroll | 28 min |
| Apr 16, 8:18 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Harford | 42 min |
| Apr 16, 8:52 PM EDT | Special Weather Statement | LWX | City of Baltimore | 23 min |
| Apr 16, 8:56 PM EDT | Flash Flood Warning | LWX | Baltimore, City of Baltimore | 94 min |
| Apr 16, 9:16 PM EDT | Special Weather Statement | LWX | Harford | 29 min |
| Apr 16, 9:48 PM EDT | Areal Flood Warning | LWX | Frederick | 13 hr |
| Apr 16, 9:53 PM EDT | Special Weather Statement | LWX | Calvert | 37 min |
| Apr 16, 10:03 PM EDT | River Flood Warning | LWX | Washington | 37 hr |
| Apr 16, 10:17 PM EDT | River Flood Warning | LWX | Frederick | 36 hr |
Nearby
Wind Advisories in Virginia, 2011Wind Advisories in West Virginia, 2011Wind Advisories in Maryland, 2011Every wind advisory 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.