Alert archive / Virginia / Wind Advisories in 2012
Wind Advisory 11, NWS Baltimore/Washington
NWS Baltimore/Washington issued this wind advisory at Dec 20, 2012, 2:11 PM EST for 11 counties in Maryland; 28 counties in Virginia; 8 counties in West Virginia. It took effect at Dec 21, 2012, 1:00 AM EST. It was in force for 40 hr.
The area
The counties it named.
The facts
- Issued
- Dec 20, 2012, 2:11 PM EST (19:11 UTC)
- In effect from
- Dec 21, 2012, 1:00 AM EST
- Expired
- Dec 22, 2012, 4:37 PM EST
- In force
- 40 hr
- Issued by
- NWS Baltimore/Washington
All 47 counties
Allegany County, MD, Anne Arundel County, MD, Baltimore County, MD, Calvert County, MD, Carroll County, MD, Charles County, MD, City of Baltimore, MD, Frederick County, MD, Prince George's County, MD, Saint Mary's County, MD, Washington County, MD, Arlington County, VA, City of Alexandria, VA, City of Charlottesville, VA, City of Fairfax, VA, City of Falls Church, VA, City of Fredericksburg, VA, City of Harrisonburg, VA, City of Staunton, VA, City of Waynesboro, VA, City of Winchester, VA, Clarke County, VA, Culpeper County, VA, Fairfax County, VA, Fauquier County, VA, Frederick County, VA, Greene County, VA, Highland County, VA, King George County, VA, Madison County, VA, Nelson County, VA, Orange County, VA, Page County, VA, Rappahannock County, VA, Rockingham County, VA, Shenandoah County, VA, Spotsylvania County, VA, Stafford 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), 44 km from the middle of the area, began a volume at 19:10 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 12:00Z, 7.2 hours before the alert went out and 50 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1199 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 41 m²/s²
- 0-3 km storm-relative helicity
- 157 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
106 WWUS71 KLWX 201911 NPWLWX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 211 PM EST THU DEC 20 2012 MDZ502-VAZ025-026-036>038-504-WVZ050-055-502-504-506-210315- /O.NEW.KLWX.WI.Y.0011.121221T0600Z-121222T1100Z/ /O.NEW.KLWX.HW.A.0003.121222T1100Z-121222T2300Z/ CENTRAL AND EASTERN ALLEGANY-AUGUSTA-ROCKINGHAM-NELSON-ALBEMARLE- GREENE-EASTERN HIGHLAND-HAMPSHIRE-HARDY-EASTERN GRANT- EASTERN MINERAL-EASTERN PENDLETON- INCLUDING THE CITIES OF...CUMBERLAND...STAUNTON...WAYNESBORO... HARRISONBURG...CHARLOTTESVILLE...MONTEREY...MOOREFIELD... PETERSBURG...KEYSER...FORT ASHBY...FRANKLIN 211 PM EST THU DEC 20 2012 ...WIND ADVISORY IN EFFECT FROM 1 AM FRIDAY TO 6 AM EST SATURDAY... ...HIGH WIND WATCH IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY AFTERNOON... THE NATIONAL WEATHER SERVICE IN BALTIMORE MD/WASHINGTON HAS ISSUED A WIND ADVISORY...WHICH IS IN EFFECT FROM 1 AM FRIDAY TO 6 AM EST SATURDAY. A HIGH WIND WATCH HAS ALSO BEEN ISSUED. THIS HIGH WIND WATCH IS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY AFTERNOON. * TIMING...LATE TONIGHT...WINDS WILL INCREASE ACROSS THE HIGHER TERRAIN OF THE CENTRAL APPALACHIANS AND ALLEGANY FRONT BEHIND A STRONG COLD FRONT. WINDS WILL REMAIN STRONG THROUGH THE DAY FRIDAY...MAINLY ABOVE 2000 FEET. HIGH WINDS WILL ALSO BE POSSIBLE ACROSS FOOTHILLS AND PIEDMONT SATURDAY DURING THE DAYLIGHT HOURS. * WINDS...WEST WINDS OF 20 TO 30 MPH...WITH GUSTS UP AROUND 50 MPH DURING THE OVERNIGHT HOURS TONIGHT...THOUGH FRIDAY AND FRIDAY NIGHT. WINDS WILL INCREASE ON SATURDAY FROM THE WEST AT 30 TO 40 MPH...WITH PEAK GUSTS AROUND 60 MPH. * IMPACTS...THE STRONGEST GUSTS ARE EXPECTED ACROSS THE HIGHER TERRAIN OVERNIGHT TONIGHT AND THROUGH MUCH OF FRIDAY. MORE WIDESPREAD IMPACTS WILL BE POSSIBLE SATURDAY...AS STRONG TO DAMAGING WIND GUSTS WILL HAVE THE POTENTIAL TO SPREAD OVER MUCH OF THE AREA. DOWNED TREES AND POWERLINES WILL BE POSSIBLE SATURDAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WIND GUSTS OF 45 TO 55 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT... ESPECIALLY FOR HIGH PROFILE VEHICLES. A HIGH WIND WATCH MEANS THERE IS THE POTENTIAL FOR A HAZARDOUS HIGH WIND EVENT. SUSTAINED WINDS OF AT LEAST 40 MPH...OR GUSTS OF 58 MPH OR STRONGER MAY OCCUR. CONTINUE TO MONITOR THE LATEST FORECASTS. && $$ DCZ001-MDZ003>007-009>011-013-014-016>018-501-VAZ027>031-039-040- 042-050>057-501>503-WVZ051>053-501-503-505-210315- /O.NEW.KLWX.HW.A.0003.121222T1100Z-121222T2300Z/ DISTRICT OF COLUMBIA-WASHINGTON-FREDERICK MD-CARROLL- NORTHERN BALTIMORE-HARFORD-MONTGOMERY-HOWARD-SOUTHERN BALTIMORE- PRINCE GEORGES-ANNE ARUNDEL-CHARLES-ST. MARYS-CALVERT- EXTREME WESTERN ALLEGANY-SHENANDOAH-FREDERICK VA-PAGE-WARREN- CLARKE-MADISON-RAPPAHANNOCK-LOUDOUN-ORANGE-CULPEPER- PRINCE WILLIAM/MANASSAS/MANASSAS PARK-FAIRFAX- ARLINGTON/FALLS CHURCH/ALEXANDRIA-STAFFORD-SPOTSYLVANIA- KING GEORGE-NORTHERN FAUQUIER-SOUTHERN FAUQUIER-WESTERN HIGHLAND- MORGAN-BERKELEY-JEFFERSON-WESTERN GRANT-WESTERN MINERAL- WESTERN PENDLETON- INCLUDING THE CITIES OF...WASHINGTON...HAGERSTOWN...FREDERICK... WESTMINSTER...GAITHERSBURG...COLUMBIA...BALTIMORE...ANNAPOLIS... WALDORF...ST MARYS CITY...FROSTBURG...WINCHESTER...FRONT ROYAL... LEESBURG...CULPEPER...MANASSAS...MANASSAS PARK...FAIRFAX... ALEXANDRIA...FALLS CHURCH...FREDERICKSBURG...WARRENTON... HIGHTOWN...MARTINSBURG...CHARLES TOWN...BAYARD...MOUNT STORM... ELK GARDEN...CIRCLEVILLE 211 PM EST THU DEC 20 2012 ...HIGH WIND WATCH IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY AFTERNOON... THE NATIONAL WEATHER SERVICE IN BALTIMORE MD/WASHINGTON HAS ISSUED A HIGH WIND WATCH...WHICH IS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY AFTERNOON. * TIMING...FOR MUCH OF THE DAY SATURDAY...ESPECIALLY DURING THE DAYLIGHT HOURS. * WINDS...WEST WINDS OF 30 TO 40 MPH...WITH PEAK GUSTS AROUND 60 MPH. * IMPACTS...DOWNED TREES AND POWERLINES WILL BE POSSIBLE FROM THE HIGHER WIND GUSTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HIGH WIND WATCH MEANS THERE IS THE POTENTIAL FOR A HAZARDOUS HIGH WIND EVENT. SUSTAINED WINDS OF AT LEAST 40 MPH...OR GUSTS OF 58 MPH OR STRONGER MAY OCCUR. CONTINUE TO MONITOR THE LATEST FORECASTS. && $$
9 follow-up statements
879 WWUS71 KLWX 210210 NPWLWX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 910 PM EST THU DEC 20 2012 MDZ502-VAZ025-026-036>038-504-WVZ050-055-502-504-506-211015- /O.CON.KLWX.WI.Y.0011.121221T0600Z-121222T1100Z/ /O.CON.KLWX.HW.A.0003.121222T1100Z-121222T2300Z/ CENTRAL AND EASTERN ALLEGANY-AUGUSTA-ROCKINGHAM-NELSON-ALBEMARLE- GREENE-EASTERN HIGHLAND-HAMPSHIRE-HARDY-EASTERN GRANT- EASTERN MINERAL-EASTERN PENDLETON- INCLUDING THE CITIES OF...CUMBERLAND...STAUNTON...WAYNESBORO... HARRISONBURG...CHARLOTTESVILLE...MONTEREY...MOOREFIELD... PETERSBURG...KEYSER...FORT ASHBY...FRANKLIN 910 PM EST THU DEC 20 2012 ...WIND ADVISORY REMAINS IN EFFECT FROM 1 AM FRIDAY TO 6 AM EST SATURDAY... ...HIGH WIND WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY AFTERNOON... * TIMING...LATE TONIGHT...WINDS WILL INCREASE ACROSS THE HIGHER TERRAIN OF THE CENTRAL APPALACHIANS AND ALLEGANY FRONT BEHIND A STRONG COLD FRONT. WINDS WILL REMAIN STRONG THROUGH THE DAY FRIDAY...MAINLY ABOVE 2000 FEET. HIGH WINDS WILL ALSO BE POSSIBLE ACROSS FOOTHILLS AND PIEDMONT SATURDAY DURING THE DAYLIGHT HOURS. * WINDS...WEST WINDS OF 20 TO 30 MPH...WITH GUSTS UP AROUND 50 MPH DURING THE OVERNIGHT HOURS TONIGHT...THROUGH FRIDAY AND FRIDAY NIGHT. WINDS WILL INCREASE ON SATURDAY FROM THE WEST AT 30 TO 40 MPH...WITH PEAK GUSTS AROUND 60 MPH. * IMPACTS...THE STRONGEST GUSTS ARE EXPECTED ACROSS THE HIGHER TERRAIN OVERNIGHT TONIGHT AND THROUGH MUCH OF FRIDAY. MORE WIDESPREAD IMPACTS WILL BE POSSIBLE SATURDAY...AS STRONG TO DAMAGING WIND GUSTS WILL HAVE THE POTENTIAL TO SPREAD OVER MUCH OF THE AREA. DOWNED TREES AND POWERLINES WILL BE POSSIBLE SATURDAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WIND GUSTS OF 45 TO 55 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT... ESPECIALLY FOR HIGH PROFILE VEHICLES. A HIGH WIND WATCH MEANS THERE IS THE POTENTIAL FOR A HAZARDOUS HIGH WIND EVENT. SUSTAINED WINDS OF AT LEAST 40 MPH...OR GUSTS OF 58 MPH OR STRONGER MAY OCCUR. CONTINUE TO MONITOR THE LATEST FORECASTS. && $$ DCZ001-MDZ003>007-009>011-013-014-016>018-501-VAZ027>031-039-040- 042-050>057-501>503-WVZ051>053-501-503-505-211015- /O.CON.KLWX.HW.A.0003.121222T1100Z-121222T2300Z/ DISTRICT OF COLUMBIA-WASHINGTON-FREDERICK MD-CARROLL- NORTHERN BALTIMORE-HARFORD-MONTGOMERY-HOWARD-SOUTHERN BALTIMORE- PRINCE GEORGES-ANNE ARUNDEL-CHARLES-ST. MARYS-CALVERT- EXTREME WESTERN ALLEGANY-SHENANDOAH-FREDERICK VA-PAGE-WARREN- CLARKE-MADISON-RAPPAHANNOCK-LOUDOUN-ORANGE-CULPEPER- PRINCE WILLIAM/MANASSAS/MANASSAS PARK-FAIRFAX- ARLINGTON/FALLS CHURCH/ALEXANDRIA-STAFFORD-SPOTSYLVANIA- KING GEORGE-NORTHERN FAUQUIER-SOUTHERN FAUQUIER-WESTERN HIGHLAND- MORGAN-BERKELEY-JEFFERSON-WESTERN GRANT-WESTERN MINERAL- WESTERN PENDLETON- INCLUDING THE CITIES OF...WASHINGTON...HAGERSTOWN...FREDERICK... WESTMINSTER...GAITHERSBURG...COLUMBIA...BALTIMORE...ANNAPOLIS... WALDORF...ST MARYS CITY...FROSTBURG...WINCHESTER...FRONT ROYAL... LEESBURG...CULPEPER...MANASSAS...MANASSAS PARK...FAIRFAX... ALEXANDRIA...FALLS CHURCH...FREDERICKSBURG...WARRENTON... HIGHTOWN...MARTINSBURG...CHARLES TOWN...BAYARD...MOUNT STORM... ELK GARDEN...CIRCLEVILLE 910 PM EST THU DEC 20 2012 ...HIGH WIND WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY AFTERNOON... * TIMING...FOR MUCH OF THE DAY SATURDAY...ESPECIALLY DURING THE DAYLIGHT HOURS. * WINDS...WEST WINDS OF 30 TO 40 MPH...WITH PEAK GUSTS AROUND 60 MPH. * IMPACTS...DOWNED TREES AND POWERLINES WILL BE POSSIBLE FROM THE HIGHER WIND GUSTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HIGH WIND WATCH MEANS THERE IS THE POTENTIAL FOR A HAZARDOUS HIGH WIND EVENT. SUSTAINED WINDS OF AT LEAST 40 MPH...OR GUSTS OF 58 MPH OR STRONGER MAY OCCUR. CONTINUE TO MONITOR THE LATEST FORECASTS. && $$
867 WWUS71 KLWX 210729 NPWLWX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 229 AM EST FRI DEC 21 2012 MDZ003-VAZ027>031-039-040-WVZ051>053-211530- /O.EXA.KLWX.WI.Y.0011.000000T0000Z-121222T1100Z/ /O.CON.KLWX.HW.A.0003.121222T1100Z-121222T2300Z/ WASHINGTON-SHENANDOAH-FREDERICK VA-PAGE-WARREN-CLARKE-MADISON- RAPPAHANNOCK-MORGAN-BERKELEY-JEFFERSON- INCLUDING THE CITIES OF...HAGERSTOWN...WINCHESTER...FRONT ROYAL... WASHINGTON...MARTINSBURG...CHARLES TOWN 229 AM EST FRI DEC 21 2012 ...WIND ADVISORY IN EFFECT UNTIL 6 AM EST SATURDAY... ...HIGH WIND WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY AFTERNOON... THE NATIONAL WEATHER SERVICE IN BALTIMORE MD/WASHINGTON HAS ISSUED A WIND ADVISORY...WHICH IS IN EFFECT UNTIL 6 AM EST SATURDAY. * TIMING...WINDS WILL INCREASE THIS MORNING ACROSS THE HIGHER TERRAIN FOR LOCATIONS ALONG AND WEST OF THE BLUE RIDGE MOUNTAINS. WINDS WILL REMAIN STRONG THROUGH TONIGHT...ESPECIALLY ABOVE 2000 FEET. HIGH WINDS ARE ALSO POSSIBLE SATURDAY. * WINDS...WEST 20 TO 30 MPH WITH GUSTS UP TO 50 MPH THROUGH TONIGHT. WINDS WILL INCREASE SATURDAY FROM THE WEST AT 30 TO 40 MPH...WITH PEAK GUSTS AROUND 60 MPH POSSIBLE. * IMPACTS...DOWNED TREES AND POWERLINES WILL BE POSSIBLE FROM THE HIGHER WIND GUSTS. THE MOST WIDESPREAD IMPACTS ARE EXPECTED SATURDAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HIGH WIND WATCH MEANS THERE IS THE POTENTIAL FOR A HAZARDOUS HIGH WIND EVENT. SUSTAINED WINDS OF AT LEAST 40 MPH...OR GUSTS OF 58 MPH OR STRONGER MAY OCCUR. CONTINUE TO MONITOR THE LATEST FORECASTS. A WIND ADVISORY MEANS THAT WIND GUSTS OF 45 TO 55 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT... ESPECIALLY FOR HIGH PROFILE VEHICLES. && $$ MDZ502-VAZ025-026-036>038-504-WVZ050-055-502-504-506-211530- /O.CON.KLWX.WI.Y.0011.000000T0000Z-121222T1100Z/ /O.CON.KLWX.HW.A.0003.121222T1100Z-121222T2300Z/ CENTRAL AND EASTERN ALLEGANY-AUGUSTA-ROCKINGHAM-NELSON-ALBEMARLE- GREENE-EASTERN HIGHLAND-HAMPSHIRE-HARDY-EASTERN GRANT- EASTERN MINERAL-EASTERN PENDLETON- INCLUDING THE CITIES OF...CUMBERLAND...STAUNTON...WAYNESBORO... HARRISONBURG...CHARLOTTESVILLE...MONTEREY...MOOREFIELD... PETERSBURG...KEYSER...FORT ASHBY...FRANKLIN 229 AM EST FRI DEC 21 2012 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 AM EST SATURDAY... ...HIGH WIND WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY AFTERNOON... * TIMING...WINDS WILL INCREASE THIS MORNING ACROSS THE HIGHER TERRAIN FOR LOCATIONS ALONG AND WEST OF THE BLUE RIDGE MOUNTAINS. WINDS WILL REMAIN STRONG THROUGH TONIGHT...ESPECIALLY ABOVE 2000 FEET. HIGH WINDS ARE ALSO POSSIBLE SATURDAY. * WINDS...WEST 20 TO 30 MPH WITH GUSTS UP TO 50 MPH THROUGH TONIGHT. WINDS WILL INCREASE SATURDAY FROM THE WEST AT 30 TO 40 MPH...WITH PEAK GUSTS AROUND 60 MPH POSSIBLE. * IMPACTS...DOWNED TREES AND POWERLINES WILL BE POSSIBLE FROM THE HIGHER WIND GUSTS. THE MOST WIDESPREAD IMPACTS ARE EXPECTED SATURDAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WIND GUSTS OF 45 TO 55 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT... ESPECIALLY FOR HIGH PROFILE VEHICLES. A HIGH WIND WATCH MEANS THERE IS THE POTENTIAL FOR A HAZARDOUS HIGH WIND EVENT. SUSTAINED WINDS OF AT LEAST 40 MPH...OR GUSTS OF 58 MPH OR STRONGER MAY OCCUR. CONTINUE TO MONITOR THE LATEST FORECASTS. && $$ DCZ001-MDZ004>007-009>011-013-014-016>018-501-VAZ042-050>057- 501>503-WVZ501-503-505-211530- /O.CON.KLWX.HW.A.0003.121222T1100Z-121222T2300Z/ DISTRICT OF COLUMBIA-FREDERICK MD-CARROLL-NORTHERN BALTIMORE- HARFORD-MONTGOMERY-HOWARD-SOUTHERN BALTIMORE-PRINCE GEORGES- ANNE ARUNDEL-CHARLES-ST. MARYS-CALVERT-EXTREME WESTERN ALLEGANY- LOUDOUN-ORANGE-CULPEPER-PRINCE WILLIAM/MANASSAS/MANASSAS PARK- FAIRFAX-ARLINGTON/FALLS CHURCH/ALEXANDRIA-STAFFORD-SPOTSYLVANIA- KING GEORGE-NORTHERN FAUQUIER-SOUTHERN FAUQUIER-WESTERN HIGHLAND- WESTERN GRANT-WESTERN MINERAL-WESTERN PENDLETON- INCLUDING THE CITIES OF...WASHINGTON...FREDERICK...WESTMINSTER... GAITHERSBURG...COLUMBIA...BALTIMORE...ANNAPOLIS...WALDORF... ST MARYS CITY...FROSTBURG...LEESBURG...CULPEPER...MANASSAS... MANASSAS PARK...FAIRFAX...ALEXANDRIA...FALLS CHURCH... FREDERICKSBURG...WARRENTON...HIGHTOWN...BAYARD...MOUNT STORM... ELK GARDEN...CIRCLEVILLE 229 AM EST FRI DEC 21 2012 ...HIGH WIND WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY AFTERNOON... * TIMING...FOR MUCH OF THE DAY SATURDAY...ESPECIALLY DURING THE DAYLIGHT HOURS. * WINDS...WEST 30 TO 40 MPH WITH GUSTS AROUND 60 MPH. * IMPACTS...DOWNED TREES AND POWERLINES WILL BE POSSIBLE FROM THE HIGHER WIND GUSTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HIGH WIND WATCH MEANS THERE IS THE POTENTIAL FOR A HAZARDOUS HIGH WIND EVENT. SUSTAINED WINDS OF AT LEAST 40 MPH...OR GUSTS OF 58 MPH OR STRONGER MAY OCCUR. CONTINUE TO MONITOR THE LATEST FORECASTS. && $$
570 WWUS71 KLWX 211519 NPWLWX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 1019 AM EST FRI DEC 21 2012 MDZ003-502-VAZ025>031-036>040-504-WVZ050>053-055-502-504-506- 212330- /O.CON.KLWX.WI.Y.0011.000000T0000Z-121222T1100Z/ /O.CON.KLWX.HW.A.0003.121222T1100Z-121222T2300Z/ WASHINGTON-CENTRAL AND EASTERN ALLEGANY-AUGUSTA-ROCKINGHAM- SHENANDOAH-FREDERICK VA-PAGE-WARREN-CLARKE-NELSON-ALBEMARLE- GREENE-MADISON-RAPPAHANNOCK-EASTERN HIGHLAND-HAMPSHIRE-MORGAN- BERKELEY-JEFFERSON-HARDY-EASTERN GRANT-EASTERN MINERAL- EASTERN PENDLETON- INCLUDING THE CITIES OF...HAGERSTOWN...CUMBERLAND...STAUNTON... WAYNESBORO...HARRISONBURG...WINCHESTER...FRONT ROYAL... CHARLOTTESVILLE...WASHINGTON...MONTEREY...MARTINSBURG... CHARLES TOWN...MOOREFIELD...PETERSBURG...KEYSER...FORT ASHBY... FRANKLIN 1019 AM EST FRI DEC 21 2012 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 AM EST SATURDAY... ...HIGH WIND WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY AFTERNOON... * TIMING...WINDS SPEEDS ARE INCREASING ACROSS THE HIGHER TERRAIN ALONG AND WEST OF THE BLUE RIDGE MOUNTAINS. WINDS WILL REMAIN STRONG THROUGH TONIGHT... ESPECIALLY ABOVE 2000 FEET. HIGH WINDS ARE ALSO POSSIBLE SATURDAY. * WINDS...WEST 20 TO 30 MPH WITH GUSTS UP TO 55 MPH. * IMPACTS...DOWNED TREES AND POWERLINES WILL BE POSSIBLE FROM THE HIGHER WIND GUSTS. THE MOST WIDESPREAD IMPACTS ARE EXPECTED SATURDAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WIND GUSTS OF 45 TO 55 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT... ESPECIALLY FOR HIGH PROFILE VEHICLES. A HIGH WIND WATCH MEANS THERE IS THE POTENTIAL FOR A HAZARDOUS HIGH WIND EVENT. SUSTAINED WINDS OF AT LEAST 40 MPH...OR GUSTS OF 58 MPH OR STRONGER MAY OCCUR. CONTINUE TO MONITOR THE LATEST FORECASTS. && $$ DCZ001-MDZ004>007-009>011-013-014-016>018-501-VAZ042-050>057- 501>503-WVZ501-503-505-212330- /O.CON.KLWX.HW.A.0003.121222T1100Z-121222T2300Z/ DISTRICT OF COLUMBIA-FREDERICK MD-CARROLL-NORTHERN BALTIMORE- HARFORD-MONTGOMERY-HOWARD-SOUTHERN BALTIMORE-PRINCE GEORGES- ANNE ARUNDEL-CHARLES-ST. MARYS-CALVERT-EXTREME WESTERN ALLEGANY- LOUDOUN-ORANGE-CULPEPER-PRINCE WILLIAM/MANASSAS/MANASSAS PARK- FAIRFAX-ARLINGTON/FALLS CHURCH/ALEXANDRIA-STAFFORD-SPOTSYLVANIA- KING GEORGE-NORTHERN FAUQUIER-SOUTHERN FAUQUIER-WESTERN HIGHLAND- WESTERN GRANT-WESTERN MINERAL-WESTERN PENDLETON- INCLUDING THE CITIES OF...WASHINGTON...FREDERICK...WESTMINSTER... GAITHERSBURG...COLUMBIA...BALTIMORE...ANNAPOLIS...WALDORF... ST MARYS CITY...FROSTBURG...LEESBURG...CULPEPER...MANASSAS... MANASSAS PARK...FAIRFAX...ALEXANDRIA...FALLS CHURCH... FREDERICKSBURG...WARRENTON...HIGHTOWN...BAYARD...MOUNT STORM... ELK GARDEN...CIRCLEVILLE 1019 AM EST FRI DEC 21 2012 ...HIGH WIND WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY AFTERNOON... * TIMING...DURING THE DAYLIGHT HOURS SATURDAY. * WINDS...NORTHWEST 20 TO 30 MPH WITH GUSTS UP TO 50 MPH. * IMPACTS...DOWNED TREES AND POWERLINES WILL BE POSSIBLE FROM THE HIGHER WIND GUSTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HIGH WIND WATCH MEANS THERE IS THE POTENTIAL FOR A HAZARDOUS HIGH WIND EVENT. SUSTAINED WINDS OF AT LEAST 40 MPH...OR GUSTS OF 58 MPH OR STRONGER MAY OCCUR. CONTINUE TO MONITOR THE LATEST FORECASTS. && $$
025 WWUS71 KLWX 211815 NPWLWX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 115 PM EST FRI DEC 21 2012 MDZ003-502-VAZ025>031-036>040-504-WVZ050>053-055-502-504-506- 220215- /O.CAN.KLWX.HW.A.0003.121222T1100Z-121222T2300Z/ /O.EXT.KLWX.WI.Y.0011.000000T0000Z-121222T2200Z/ WASHINGTON-CENTRAL AND EASTERN ALLEGANY-AUGUSTA-ROCKINGHAM- SHENANDOAH-FREDERICK VA-PAGE-WARREN-CLARKE-NELSON-ALBEMARLE- GREENE-MADISON-RAPPAHANNOCK-EASTERN HIGHLAND-HAMPSHIRE-MORGAN- BERKELEY-JEFFERSON-HARDY-EASTERN GRANT-EASTERN MINERAL- EASTERN PENDLETON- INCLUDING THE CITIES OF...HAGERSTOWN...CUMBERLAND...STAUNTON... WAYNESBORO...HARRISONBURG...WINCHESTER...FRONT ROYAL... CHARLOTTESVILLE...WASHINGTON...MONTEREY...MARTINSBURG... CHARLES TOWN...MOOREFIELD...PETERSBURG...KEYSER...FORT ASHBY... FRANKLIN 115 PM EST FRI DEC 21 2012 ...WIND ADVISORY NOW IN EFFECT UNTIL 5 PM EST SATURDAY... ...HIGH WIND WATCH IS CANCELLED... THE NATIONAL WEATHER SERVICE IN BALTIMORE MD/WASHINGTON HAS CANCELLED THE HIGH WIND WATCH. * TIMING...WINDS SPEEDS HAVE INCREASED ACROSS THE HIGHER TERRAIN ALONG AND WEST OF THE BLUE RIDGE MOUNTAINS. WINDS WILL REMAIN STRONG THROUGH TONIGHT...ESPECIALLY ABOVE 2000 FEET. HIGH WINDS ARE EXPECTED SATURDAY...ESPECIALLY BETWEEN THE HOURS OF 11 AM AND 4 PM. WINDS SHOULD DIMINISH AFTER SUNSET SATURDAY EVENING. * WINDS...WEST 20 TO 30 MPH WITH GUSTS UP TO 55 MPH. * IMPACTS...DOWNED TREES AND POWERLINES WILL BE POSSIBLE FROM THE HIGHER WIND GUSTS. THE MOST WIDESPREAD IMPACTS ARE EXPECTED SATURDAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WIND GUSTS OF 45 TO 55 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT... ESPECIALLY FOR HIGH PROFILE VEHICLES. && $$ DCZ001-MDZ004>007-009>011-013-014-016>018-501-VAZ042-050>057- 501>503-WVZ501-503-505-220215- /O.UPG.KLWX.HW.A.0003.121222T1100Z-121222T2300Z/ /O.EXB.KLWX.WI.Y.0011.121222T1100Z-121222T2200Z/ DISTRICT OF COLUMBIA-FREDERICK MD-CARROLL-NORTHERN BALTIMORE- HARFORD-MONTGOMERY-HOWARD-SOUTHERN BALTIMORE-PRINCE GEORGES- ANNE ARUNDEL-CHARLES-ST. MARYS-CALVERT-EXTREME WESTERN ALLEGANY- LOUDOUN-ORANGE-CULPEPER-PRINCE WILLIAM/MANASSAS/MANASSAS PARK- FAIRFAX-ARLINGTON/FALLS CHURCH/ALEXANDRIA-STAFFORD-SPOTSYLVANIA- KING GEORGE-NORTHERN FAUQUIER-SOUTHERN FAUQUIER-WESTERN HIGHLAND- WESTERN GRANT-WESTERN MINERAL-WESTERN PENDLETON- INCLUDING THE CITIES OF...WASHINGTON...FREDERICK...WESTMINSTER... GAITHERSBURG...COLUMBIA...BALTIMORE...ANNAPOLIS...WALDORF... ST MARYS CITY...FROSTBURG...LEESBURG...CULPEPER...MANASSAS... MANASSAS PARK...FAIRFAX...ALEXANDRIA...FALLS CHURCH... FREDERICKSBURG...WARRENTON...HIGHTOWN...BAYARD...MOUNT STORM... ELK GARDEN...CIRCLEVILLE 115 PM EST FRI DEC 21 2012 ...WIND ADVISORY IN EFFECT FROM 6 AM TO 5 PM EST SATURDAY... THE NATIONAL WEATHER SERVICE IN BALTIMORE MD/WASHINGTON HAS ISSUED A WIND ADVISORY...WHICH IS IN EFFECT FROM 6 AM TO 5 PM EST SATURDAY. THE HIGH WIND WATCH IS NO LONGER IN EFFECT. * TIMING...DURING THE DAYLIGHT HOURS SATURDAY. THE STRONGEST WINDS ARE EXPECTED BETWEEN 11 AM AND 4 PM. WINDS SHOULD DIMINISH AFTER SUNSET SATURDAY EVENING. * WINDS...NORTHWEST 20 TO 30 MPH WITH GUSTS UP TO 50 MPH. * IMPACTS...DOWNED TREES AND POWERLINES WILL BE POSSIBLE FROM THE HIGHER WIND GUSTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WIND GUSTS OF 45 TO 55 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT... ESPECIALLY FOR HIGH PROFILE VEHICLES. && $$
273 WWUS71 KLWX 212346 NPWLWX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 646 PM EST FRI DEC 21 2012 MDZ501-VAZ503-WVZ501-503-505-220800- /O.EXT.KLWX.WI.Y.0011.121221T2346Z-121222T2200Z/ EXTREME WESTERN ALLEGANY-WESTERN HIGHLAND-WESTERN GRANT- WESTERN MINERAL-WESTERN PENDLETON- INCLUDING THE CITIES OF...FROSTBURG...HIGHTOWN...BAYARD... MOUNT STORM...ELK GARDEN...CIRCLEVILLE 646 PM EST FRI DEC 21 2012 ...WIND ADVISORY NOW IN EFFECT UNTIL 5 PM EST SATURDAY... * TIMING...WINDS WILL REMAIN STRONG THROUGH TONIGHT...ESPECIALLY ABOVE 2000 FEET. HIGH WINDS ARE EXPECTED SATURDAY...ESPECIALLY BETWEEN THE HOURS OF 11 AM AND 4 PM. WINDS SHOULD DIMINISH AFTER SUNSET SATURDAY EVENING. * WINDS...NORTHWEST 20 TO 30 MPH WITH GUSTS UP TO 55 MPH. * IMPACTS...DOWNED TREES AND POWERLINES WILL BE POSSIBLE FROM THE HIGHER WIND GUSTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WIND GUSTS OF 45 TO 55 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT... ESPECIALLY FOR HIGH PROFILE VEHICLES. && $$ MDZ003-502-VAZ025>031-036>040-504-WVZ050>053-055-502-504-506- 220800- /O.CON.KLWX.WI.Y.0011.000000T0000Z-121222T2200Z/ WASHINGTON-CENTRAL AND EASTERN ALLEGANY-AUGUSTA-ROCKINGHAM- SHENANDOAH-FREDERICK VA-PAGE-WARREN-CLARKE-NELSON-ALBEMARLE- GREENE-MADISON-RAPPAHANNOCK-EASTERN HIGHLAND-HAMPSHIRE-MORGAN- BERKELEY-JEFFERSON-HARDY-EASTERN GRANT-EASTERN MINERAL- EASTERN PENDLETON- INCLUDING THE CITIES OF...HAGERSTOWN...CUMBERLAND...STAUNTON... WAYNESBORO...HARRISONBURG...WINCHESTER...FRONT ROYAL... CHARLOTTESVILLE...WASHINGTON...MONTEREY...MARTINSBURG... CHARLES TOWN...MOOREFIELD...PETERSBURG...KEYSER...FORT ASHBY... FRANKLIN 646 PM EST FRI DEC 21 2012 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 5 PM EST SATURDAY... * TIMING...WINDS WILL REMAIN STRONG THROUGH TONIGHT...ESPECIALLY ABOVE 2000 FEET. HIGH WINDS ARE EXPECTED SATURDAY...ESPECIALLY BETWEEN THE HOURS OF 11 AM AND 4 PM. WINDS SHOULD DIMINISH AFTER SUNSET SATURDAY EVENING. * WINDS...WEST 20 TO 30 MPH WITH GUSTS UP TO 55 MPH. * IMPACTS...DOWNED TREES AND POWERLINES WILL BE POSSIBLE FROM THE HIGHER WIND GUSTS. THE MOST WIDESPREAD IMPACTS ARE EXPECTED SATURDAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WIND GUSTS OF 45 TO 55 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT... ESPECIALLY FOR HIGH PROFILE VEHICLES. && $$ DCZ001-MDZ004>007-009>011-013-014-016>018-VAZ042-050>057-501-502- 220800- /O.CON.KLWX.WI.Y.0011.121222T1100Z-121222T2200Z/ DISTRICT OF COLUMBIA-FREDERICK MD-CARROLL-NORTHERN BALTIMORE- HARFORD-MONTGOMERY-HOWARD-SOUTHERN BALTIMORE-PRINCE GEORGES- ANNE ARUNDEL-CHARLES-ST. MARYS-CALVERT-LOUDOUN-ORANGE-CULPEPER- PRINCE WILLIAM/MANASSAS/MANASSAS PARK-FAIRFAX- ARLINGTON/FALLS CHURCH/ALEXANDRIA-STAFFORD-SPOTSYLVANIA- KING GEORGE-NORTHERN FAUQUIER-SOUTHERN FAUQUIER- INCLUDING THE CITIES OF...WASHINGTON...FREDERICK...WESTMINSTER... GAITHERSBURG...COLUMBIA...BALTIMORE...ANNAPOLIS...WALDORF... ST MARYS CITY...LEESBURG...CULPEPER...MANASSAS...MANASSAS PARK... FAIRFAX...ALEXANDRIA...FALLS CHURCH...FREDERICKSBURG...WARRENTON 646 PM EST FRI DEC 21 2012 ...WIND ADVISORY REMAINS IN EFFECT FROM 6 AM TO 5 PM EST SATURDAY... * TIMING...DURING THE DAYLIGHT HOURS SATURDAY. THE STRONGEST WINDS ARE EXPECTED BETWEEN 11 AM AND 4 PM. WINDS SHOULD DIMINISH AFTER SUNSET SATURDAY EVENING. * WINDS...NORTHWEST 20 TO 30 MPH WITH GUSTS UP TO 50 MPH. * IMPACTS...DOWNED TREES AND POWERLINES WILL BE POSSIBLE FROM THE HIGHER WIND GUSTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WIND GUSTS OF 45 TO 50 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT... ESPECIALLY FOR HIGH PROFILE VEHICLES. && $$
715 WWUS71 KLWX 220742 NPWLWX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 242 AM EST SAT DEC 22 2012 VAZ025>027-029-030-036>040-503-504-WVZ055-501-502-505-506-221545- /O.UPG.KLWX.WI.Y.0011.000000T0000Z-121222T2200Z/ /O.NEW.KLWX.HW.W.0003.121222T0742Z-121222T2200Z/ AUGUSTA-ROCKINGHAM-SHENANDOAH-PAGE-WARREN-NELSON-ALBEMARLE-GREENE- MADISON-RAPPAHANNOCK-WESTERN HIGHLAND-EASTERN HIGHLAND-HARDY- WESTERN GRANT-EASTERN GRANT-WESTERN PENDLETON-EASTERN PENDLETON- INCLUDING THE CITIES OF...STAUNTON...WAYNESBORO...HARRISONBURG... FRONT ROYAL...CHARLOTTESVILLE...WASHINGTON...HIGHTOWN... MONTEREY...MOOREFIELD...BAYARD...MOUNT STORM...PETERSBURG... CIRCLEVILLE...FRANKLIN 242 AM EST SAT DEC 22 2012 ...HIGH WIND WARNING IN EFFECT UNTIL 5 PM EST THIS AFTERNOON... THE NATIONAL WEATHER SERVICE IN BALTIMORE MD/WASHINGTON HAS ISSUED A HIGH WIND WARNING...WHICH IS IN EFFECT UNTIL 5 PM EST THIS AFTERNOON. THE WIND ADVISORY IS NO LONGER IN EFFECT. * TIMING...THROUGH THIS AFTERNOON...MAINLY FOR ELEVATIONS ABOVE 1500 FEET. * WINDS...NORTHWEST 25 TO 40 MPH WITH GUSTS UP TO 60 MPH. * IMPACTS...DOWNED TREES AND POWERLINES WILL BE POSSIBLE FROM THE HIGHER WIND GUSTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HIGH WIND WARNING MEANS A HAZARDOUS HIGH WIND EVENT IS EXPECTED OR OCCURRING. SUSTAINED WIND SPEEDS OF AT LEAST 40 MPH OR GUSTS OF 58 MPH OR MORE CAN LEAD TO PROPERTY DAMAGE. && $$ MDZ003-501-502-VAZ028-031-WVZ050>053-503-504-221545- /O.UPG.KLWX.WI.Y.0011.000000T0000Z-121222T2200Z/ /O.NEW.KLWX.HW.W.0003.121222T0742Z-121222T2200Z/ WASHINGTON-EXTREME WESTERN ALLEGANY-CENTRAL AND EASTERN ALLEGANY- FREDERICK VA-CLARKE-HAMPSHIRE-MORGAN-BERKELEY-JEFFERSON- WESTERN MINERAL-EASTERN MINERAL- INCLUDING THE CITIES OF...HAGERSTOWN...FROSTBURG...CUMBERLAND... WINCHESTER...MARTINSBURG...CHARLES TOWN...ELK GARDEN...KEYSER... FORT ASHBY 242 AM EST SAT DEC 22 2012 ...HIGH WIND WARNING IN EFFECT UNTIL 5 PM EST THIS AFTERNOON... THE NATIONAL WEATHER SERVICE IN BALTIMORE MD/WASHINGTON HAS ISSUED A HIGH WIND WARNING...WHICH IS IN EFFECT UNTIL 5 PM EST THIS AFTERNOON. THE WIND ADVISORY IS NO LONGER IN EFFECT. * TIMING...THROUGH THIS AFTERNOON. THE STRONGEST WINDS ARE EXPECTED BETWEEN 9 AM AND 4 PM. * WINDS...NORTHWEST 25 TO 40 MPH WITH GUSTS UP TO 60 MPH. * IMPACTS...DOWNED TREES AND POWERLINES WILL BE POSSIBLE FROM THE HIGHER WIND GUSTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HIGH WIND WARNING MEANS A HAZARDOUS HIGH WIND EVENT IS EXPECTED OR OCCURRING. SUSTAINED WIND SPEEDS OF AT LEAST 40 MPH OR GUSTS OF 58 MPH OR MORE CAN LEAD TO PROPERTY DAMAGE. && $$ VAZ501-221545- /O.UPG.KLWX.WI.Y.0011.121222T1100Z-121222T2200Z/ /O.NEW.KLWX.HW.W.0003.121222T0742Z-121222T2200Z/ NORTHERN FAUQUIER- INCLUDING THE CITY OF...WARRENTON 242 AM EST SAT DEC 22 2012 ...HIGH WIND WARNING IN EFFECT UNTIL 5 PM EST THIS AFTERNOON... THE NATIONAL WEATHER SERVICE IN BALTIMORE MD/WASHINGTON HAS ISSUED A HIGH WIND WARNING...WHICH IS IN EFFECT UNTIL 5 PM EST THIS AFTERNOON. THE WIND ADVISORY IS NO LONGER IN EFFECT. * TIMING...THROUGH THIS AFTERNOON...MAINLY FOR ELEVATIONS ABOVE 1500 FEET. * WINDS...NORTHWEST 25 TO 40 MPH WITH GUSTS UP TO 60 MPH. * IMPACTS...DOWNED TREES AND POWERLINES WILL BE POSSIBLE FROM THE HIGHER WIND GUSTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WIND GUSTS OF 45 TO 50 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT... ESPECIALLY FOR HIGH PROFILE VEHICLES. A HIGH WIND WARNING MEANS A HAZARDOUS HIGH WIND EVENT IS EXPECTED OR OCCURRING. SUSTAINED WIND SPEEDS OF AT LEAST 40 MPH OR GUSTS OF 58 MPH OR MORE CAN LEAD TO PROPERTY DAMAGE. && $$ DCZ001-MDZ004>007-009>011-013-014-VAZ042-053-054-221545- /O.UPG.KLWX.WI.Y.0011.121222T1100Z-121222T2200Z/ /O.NEW.KLWX.HW.W.0003.121222T0742Z-121222T2200Z/ DISTRICT OF COLUMBIA-FREDERICK MD-CARROLL-NORTHERN BALTIMORE- HARFORD-MONTGOMERY-HOWARD-SOUTHERN BALTIMORE-PRINCE GEORGES- ANNE ARUNDEL-LOUDOUN-FAIRFAX-ARLINGTON/FALLS CHURCH/ALEXANDRIA- INCLUDING THE CITIES OF...WASHINGTON...FREDERICK...WESTMINSTER... GAITHERSBURG...COLUMBIA...BALTIMORE...ANNAPOLIS...LEESBURG... FAIRFAX...ALEXANDRIA...FALLS CHURCH 242 AM EST SAT DEC 22 2012 ...HIGH WIND WARNING IN EFFECT UNTIL 5 PM EST THIS AFTERNOON... THE NATIONAL WEATHER SERVICE IN BALTIMORE MD/WASHINGTON HAS ISSUED A HIGH WIND WARNING...WHICH IS IN EFFECT UNTIL 5 PM EST THIS AFTERNOON. THE WIND ADVISORY IS NO LONGER IN EFFECT. * TIMING...THROUGH THIS AFTERNOON. THE STRONGEST WINDS ARE EXPECTED BETWEEN 9 AM AND 4 PM. * WINDS...NORTHWEST 25 TO 40 MPH WITH GUSTS UP TO 60 MPH. * IMPACTS...DOWNED TREES AND POWERLINES WILL BE POSSIBLE FROM THE HIGHER WIND GUSTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WIND GUSTS OF 45 TO 50 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT... ESPECIALLY FOR HIGH PROFILE VEHICLES. A HIGH WIND WARNING MEANS A HAZARDOUS HIGH WIND EVENT IS EXPECTED OR OCCURRING. SUSTAINED WIND SPEEDS OF AT LEAST 40 MPH OR GUSTS OF 58 MPH OR MORE CAN LEAD TO PROPERTY DAMAGE. && $$ MDZ016>018-VAZ050>052-055>057-502-221545- /O.EXT.KLWX.WI.Y.0011.121222T0742Z-121222T2200Z/ CHARLES-ST. MARYS-CALVERT-ORANGE-CULPEPER- PRINCE WILLIAM/MANASSAS/MANASSAS PARK-STAFFORD-SPOTSYLVANIA- KING GEORGE-SOUTHERN FAUQUIER- INCLUDING THE CITIES OF...WALDORF...ST MARYS CITY...CULPEPER... MANASSAS...MANASSAS PARK...FREDERICKSBURG 242 AM EST SAT DEC 22 2012 ...WIND ADVISORY NOW IN EFFECT UNTIL 5 PM EST THIS AFTERNOON... * TIMING...THROUGH THIS AFTERNOON. THE STRONGEST WINDS WILL BE BETWEEN 9 AM AND 4 PM. * WINDS...NORTHWEST 20 TO 30 MPH WITH GUSTS UP TO 50 MPH. * IMPACTS...DOWNED TREES AND POWERLINES WILL BE POSSIBLE FROM THE HIGHER WIND GUSTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WIND GUSTS OF 45 TO 50 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT... ESPECIALLY FOR HIGH PROFILE VEHICLES. && $$
187 WWUS71 KLWX 221601 NPWLWX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 1101 AM EST SAT DEC 22 2012 VAZ025>027-029-030-036>040-501-503-504-WVZ055-501-502-505-506- 222200- /O.CON.KLWX.HW.W.0003.000000T0000Z-121222T2200Z/ AUGUSTA-ROCKINGHAM-SHENANDOAH-PAGE-WARREN-NELSON-ALBEMARLE-GREENE- MADISON-RAPPAHANNOCK-NORTHERN FAUQUIER-WESTERN HIGHLAND- EASTERN HIGHLAND-HARDY-WESTERN GRANT-EASTERN GRANT- WESTERN PENDLETON-EASTERN PENDLETON- INCLUDING THE CITIES OF...STAUNTON...WAYNESBORO...HARRISONBURG... FRONT ROYAL...CHARLOTTESVILLE...WASHINGTON...WARRENTON... HIGHTOWN...MONTEREY...MOOREFIELD...BAYARD...MOUNT STORM... PETERSBURG...CIRCLEVILLE...FRANKLIN 1101 AM EST SAT DEC 22 2012 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 PM EST THIS AFTERNOON... * TIMING...THROUGH THIS AFTERNOON...MAINLY FOR ELEVATIONS ABOVE 1500 FEET. * WINDS...WEST 20 TO 30 MPH WITH GUSTS UP TO 55 MPH. * IMPACTS...DOWNED TREES AND POWERLINES WILL BE POSSIBLE FROM THE HIGHER WIND GUSTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HIGH WIND WARNING MEANS A HAZARDOUS HIGH WIND EVENT IS EXPECTED OR OCCURRING. SUSTAINED WIND SPEEDS OF AT LEAST 40 MPH OR GUSTS OF 58 MPH OR MORE CAN LEAD TO PROPERTY DAMAGE. && $$ DCZ001-MDZ003>007-009>011-013-014-501-502-VAZ028-031-042-053-054- WVZ050>053-503-504-222200- /O.CON.KLWX.HW.W.0003.000000T0000Z-121222T2200Z/ DISTRICT OF COLUMBIA-WASHINGTON-FREDERICK MD-CARROLL- NORTHERN BALTIMORE-HARFORD-MONTGOMERY-HOWARD-SOUTHERN BALTIMORE- PRINCE GEORGES-ANNE ARUNDEL-EXTREME WESTERN ALLEGANY- CENTRAL AND EASTERN ALLEGANY-FREDERICK VA-CLARKE-LOUDOUN-FAIRFAX- ARLINGTON/FALLS CHURCH/ALEXANDRIA-HAMPSHIRE-MORGAN-BERKELEY- JEFFERSON-WESTERN MINERAL-EASTERN MINERAL- INCLUDING THE CITIES OF...WASHINGTON...HAGERSTOWN...FREDERICK... WESTMINSTER...GAITHERSBURG...COLUMBIA...BALTIMORE...ANNAPOLIS... FROSTBURG...CUMBERLAND...WINCHESTER...LEESBURG...FAIRFAX... ALEXANDRIA...FALLS CHURCH...MARTINSBURG...CHARLES TOWN... ELK GARDEN...KEYSER...FORT ASHBY 1101 AM EST SAT DEC 22 2012 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 PM EST THIS AFTERNOON... * TIMING...THROUGH THIS AFTERNOON. WINDS ARE EXPECTED TO BEGIN TO DIMINISH AFTER 4 PM. * WINDS...NORTHWEST 20 TO 30 MPH WITH GUSTS UP TO 55 MPH. * IMPACTS...DOWNED TREES AND POWERLINES WILL BE POSSIBLE FROM THE HIGHER WIND GUSTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HIGH WIND WARNING MEANS A HAZARDOUS HIGH WIND EVENT IS EXPECTED OR OCCURRING. SUSTAINED WIND SPEEDS OF AT LEAST 40 MPH OR GUSTS OF 58 MPH OR MORE CAN LEAD TO PROPERTY DAMAGE. && $$ MDZ016>018-VAZ050>052-055>057-502-222200- /O.CON.KLWX.WI.Y.0011.000000T0000Z-121222T2200Z/ CHARLES-ST. MARYS-CALVERT-ORANGE-CULPEPER- PRINCE WILLIAM/MANASSAS/MANASSAS PARK-STAFFORD-SPOTSYLVANIA- KING GEORGE-SOUTHERN FAUQUIER- INCLUDING THE CITIES OF...WALDORF...ST MARYS CITY...CULPEPER... MANASSAS...MANASSAS PARK...FREDERICKSBURG 1101 AM EST SAT DEC 22 2012 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 5 PM EST THIS AFTERNOON... * TIMING...THROUGH THIS AFTERNOON. WINDS ARE EXPECTED TO BEGIN TO DIMINISH AFTER 4 PM. * WINDS...NORTHWEST 20 TO 30 MPH WITH GUSTS UP TO 50 MPH. * IMPACTS...DOWNED TREES AND POWERLINES WILL BE POSSIBLE FROM THE HIGHER WIND GUSTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WIND GUSTS OF 45 TO 50 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT... ESPECIALLY FOR HIGH PROFILE VEHICLES. && $$
973 WWUS71 KLWX 221716 NPWLWX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 1216 PM EST SAT DEC 22 2012 DCZ001-MDZ004>007-009>011-013-014-VAZ036>040-042-053-054-501- 222200- /O.CAN.KLWX.HW.W.0003.000000T0000Z-121222T2200Z/ /O.EXA.KLWX.WI.Y.0011.000000T0000Z-121222T2200Z/ DISTRICT OF COLUMBIA-FREDERICK MD-CARROLL-NORTHERN BALTIMORE- HARFORD-MONTGOMERY-HOWARD-SOUTHERN BALTIMORE-PRINCE GEORGES- ANNE ARUNDEL-NELSON-ALBEMARLE-GREENE-MADISON-RAPPAHANNOCK-LOUDOUN- FAIRFAX-ARLINGTON/FALLS CHURCH/ALEXANDRIA-NORTHERN FAUQUIER- INCLUDING THE CITIES OF...WASHINGTON...FREDERICK...WESTMINSTER... GAITHERSBURG...COLUMBIA...BALTIMORE...ANNAPOLIS... CHARLOTTESVILLE...LEESBURG...FAIRFAX...ALEXANDRIA... FALLS CHURCH...WARRENTON 1216 PM EST SAT DEC 22 2012 ...WIND ADVISORY IN EFFECT UNTIL 5 PM EST THIS AFTERNOON... ...HIGH WIND WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN BALTIMORE MD/WASHINGTON HAS ISSUED A WIND ADVISORY...WHICH IS IN EFFECT UNTIL 5 PM EST THIS AFTERNOON. THE HIGH WIND WARNING HAS BEEN CANCELLED. * TIMING...THROUGH THIS AFTERNOON. WINDS ARE EXPECTED TO BEGIN TO DIMINISH AFTER 4 PM. * WINDS...NORTHWEST 25 TO 35 MPH WITH GUSTS UP TO 45 MPH. * IMPACTS...DOWNED TREES AND POWERLINES WILL BE POSSIBLE FROM THE HIGHER WIND GUSTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WIND GUSTS OF 45 TO 50 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT... ESPECIALLY FOR HIGH PROFILE VEHICLES. && $$ VAZ025>027-029-030-503-504-WVZ055-501-502-505-506-222200- /O.CON.KLWX.HW.W.0003.000000T0000Z-121222T2200Z/ AUGUSTA-ROCKINGHAM-SHENANDOAH-PAGE-WARREN-WESTERN HIGHLAND- EASTERN HIGHLAND-HARDY-WESTERN GRANT-EASTERN GRANT- WESTERN PENDLETON-EASTERN PENDLETON- INCLUDING THE CITIES OF...STAUNTON...WAYNESBORO...HARRISONBURG... FRONT ROYAL...HIGHTOWN...MONTEREY...MOOREFIELD...BAYARD... MOUNT STORM...PETERSBURG...CIRCLEVILLE...FRANKLIN 1216 PM EST SAT DEC 22 2012 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 PM EST THIS AFTERNOON... * TIMING...THROUGH THIS AFTERNOON...MAINLY FOR ELEVATIONS ABOVE 1500 FEET. * WINDS...WEST 20 TO 30 MPH WITH GUSTS UP TO 55 MPH. * IMPACTS...DOWNED TREES AND POWERLINES WILL BE POSSIBLE FROM THE HIGHER WIND GUSTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HIGH WIND WARNING MEANS A HAZARDOUS HIGH WIND EVENT IS EXPECTED OR OCCURRING. SUSTAINED WIND SPEEDS OF AT LEAST 40 MPH OR GUSTS OF 58 MPH OR MORE CAN LEAD TO PROPERTY DAMAGE. && $$ MDZ003-501-502-VAZ028-031-WVZ050>053-503-504-222200- /O.CON.KLWX.HW.W.0003.000000T0000Z-121222T2200Z/ WASHINGTON-EXTREME WESTERN ALLEGANY-CENTRAL AND EASTERN ALLEGANY- FREDERICK VA-CLARKE-HAMPSHIRE-MORGAN-BERKELEY-JEFFERSON- WESTERN MINERAL-EASTERN MINERAL- INCLUDING THE CITIES OF...HAGERSTOWN...FROSTBURG...CUMBERLAND... WINCHESTER...MARTINSBURG...CHARLES TOWN...ELK GARDEN...KEYSER... FORT ASHBY 1216 PM EST SAT DEC 22 2012 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 PM EST THIS AFTERNOON... * TIMING...THROUGH THIS AFTERNOON. WINDS ARE EXPECTED TO BEGIN TO DIMINISH AFTER 4 PM. * WINDS...WEST 20 TO 30 MPH WITH GUSTS UP TO 55 MPH. * IMPACTS...DOWNED TREES AND POWERLINES WILL BE POSSIBLE FROM THE HIGHER WIND GUSTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HIGH WIND WARNING MEANS A HAZARDOUS HIGH WIND EVENT IS EXPECTED OR OCCURRING. SUSTAINED WIND SPEEDS OF AT LEAST 40 MPH OR GUSTS OF 58 MPH OR MORE CAN LEAD TO PROPERTY DAMAGE. && $$ MDZ016>018-VAZ050>052-055>057-502-222200- /O.CON.KLWX.WI.Y.0011.000000T0000Z-121222T2200Z/ CHARLES-ST. MARYS-CALVERT-ORANGE-CULPEPER- PRINCE WILLIAM/MANASSAS/MANASSAS PARK-STAFFORD-SPOTSYLVANIA- KING GEORGE-SOUTHERN FAUQUIER- INCLUDING THE CITIES OF...WALDORF...ST MARYS CITY...CULPEPER... MANASSAS...MANASSAS PARK...FREDERICKSBURG 1216 PM EST SAT DEC 22 2012 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 5 PM EST THIS AFTERNOON... * TIMING...THROUGH THIS AFTERNOON. WINDS ARE EXPECTED TO BEGIN TO DIMINISH AFTER 4 PM. * WINDS...NORTHWEST 20 TO 30 MPH WITH GUSTS UP TO 45 MPH. * IMPACTS...DOWNED TREES AND POWERLINES WILL BE POSSIBLE FROM THE HIGHER WIND GUSTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WIND GUSTS OF 45 TO 50 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT... ESPECIALLY FOR HIGH PROFILE VEHICLES. && $$
048 WWUS71 KLWX 222137 NPWLWX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 437 PM EST SAT DEC 22 2012 MDZ003-501-502-VAZ025>031-503-504-WVZ050>053-055-501>506-222245- /O.CAN.KLWX.HW.W.0003.000000T0000Z-121222T2200Z/ WASHINGTON-EXTREME WESTERN ALLEGANY-CENTRAL AND EASTERN ALLEGANY- AUGUSTA-ROCKINGHAM-SHENANDOAH-FREDERICK VA-PAGE-WARREN-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...FROSTBURG...CUMBERLAND... STAUNTON...WAYNESBORO...HARRISONBURG...WINCHESTER...FRONT ROYAL... HIGHTOWN...MONTEREY...MARTINSBURG...CHARLES TOWN...MOOREFIELD... BAYARD...MOUNT STORM...PETERSBURG...ELK GARDEN...KEYSER... FORT ASHBY...CIRCLEVILLE...FRANKLIN 437 PM EST SAT DEC 22 2012 ...HIGH WIND WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN BALTIMORE MD/WASHINGTON HAS CANCELLED THE HIGH WIND WARNING. NORTHWEST WINDS WILL CONTINUE TO GUST UP TO 40 MPH BEFORE TAPERING OFF THROUGH THE EARLY EVENING HOURS. $$ DCZ001-MDZ004>007-009>011-013-014-016>018-VAZ036>040-042-050>057- 501-502-222245- /O.CAN.KLWX.WI.Y.0011.000000T0000Z-121222T2200Z/ DISTRICT OF COLUMBIA-FREDERICK MD-CARROLL-NORTHERN BALTIMORE- HARFORD-MONTGOMERY-HOWARD-SOUTHERN BALTIMORE-PRINCE GEORGES- ANNE ARUNDEL-CHARLES-ST. MARYS-CALVERT-NELSON-ALBEMARLE-GREENE- MADISON-RAPPAHANNOCK-LOUDOUN-ORANGE-CULPEPER- PRINCE WILLIAM/MANASSAS/MANASSAS PARK-FAIRFAX- ARLINGTON/FALLS CHURCH/ALEXANDRIA-STAFFORD-SPOTSYLVANIA- KING GEORGE-NORTHERN FAUQUIER-SOUTHERN FAUQUIER- INCLUDING THE CITIES OF...WASHINGTON...FREDERICK...WESTMINSTER... GAITHERSBURG...COLUMBIA...BALTIMORE...ANNAPOLIS...WALDORF... ST MARYS CITY...CHARLOTTESVILLE...LEESBURG...CULPEPER... MANASSAS...MANASSAS PARK...FAIRFAX...ALEXANDRIA...FALLS CHURCH... FREDERICKSBURG...WARRENTON 437 PM EST SAT DEC 22 2012 ...WIND ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN BALTIMORE MD/WASHINGTON HAS CANCELLED THE WIND ADVISORY. NORTHWEST WINDS WILL CONTINUE TO GUST UP TO 40 MPH BEFORE TAPERING OFF THROUGH THE EARLY EVENING HOURS. $$ JACKSON
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 Dec 20, 10:44 AM EST, 3 hours 27 minutes earlier.
Area forecast discussion, Dec 20, 10:44 AM EST, 3 hours 27 minutes before
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1044 AM EST THU DEC 20 2012
.SYNOPSIS...
HIGH PRESSURE WILL MOVE OFF THE COAST THIS MORNING. A STRONG COLD
FRONT WILL APPROACH THE AREA THIS AFTERNOON AND EVENING BEFORE
MOVING THROUGH OVERNIGHT. GUSTY WINDS ARE EXPECTED FRIDAY AND
SATURDAY AS LOW PRESSURE TO OUR NORTH INTENSIFIES. HIGH PRESSURE
WILL BUILD OVER THE AREA SUNDAY. A WEAK LOW MAY IMPACT THE REGION
MONDAY AND A STRONGER STORM SYSTEM IS POSSIBLE DURING THE MIDDLE
PORTION OF NEXT WEEK.
&&
.NEAR TERM /THROUGH TONIGHT/...
LITTLE CHANGE TO THE NEAR TERM FORECAST HRS...JUST SOME
TEMP/DEWPOINT ADJUSTS IN THE COMING HRS. THE ERN FRINGE OF THE
INCOMING PRECIP IS NOW ON THE DOORSTEP OF THE CWA...AND WILL BE
MOVING OVER THE CNTRL APLCNS BY THE NOON HR. CONDITIONS WILL
RAPIDLY DETERIORATE LATE THIS EVE AND INTO THE LATE NIGHT HRS
ACROSS THE AREA. THOUGH THE LOW PRESSURE SYSTEM IS CURRENTLY A
VAST AND COMPLEX FEATURE THAT EXTENDS FROM THE GULF COAST TO THE
GREAT LAKES...IT WILL UNDERGO SOME CHANGES AS IT MOVES TOWARD OUR
REGION.
A LEE SFC LOW IN THE MIDDLE PORTION OF THE STORM SYSTEM WILL
STRENGTHEN OVER THE SRN APLCNS AND MAKE ITS WAY TOWARD THE MID
ATLC. THE LOW'S CENTER WILL LIKELY MOVE UP THE I-81 CORRIDOR AND
THE VA BLUE RIDGE LATER TONIGHT. ON THE SE SIDE OF THIS
FEATURE...AN INTENSIFYING LOW LEVEL JET WILL DRIFT UP THE I-95
CORRIDOR. AT THE SFC...A STRONG COLD FRONT WILL SEE TEMPS RISING
UP OVERNIGHT FROM THE L40S INTO THE M-U50S AND EVEN DRAMATICALLY
INCREASING DEWPOINTS FROM THE U30S TO L-M50S OVER THE SERN
QUADRANT OF THE CWA - FROM KCHO TO KHEF TO KNAK. AS THE FRONT
APPROACHES...ISOLATED EMBEDDED AREAS OF CONVECTION ARE EXPECTED TO
FORM JUST AHEAD OF THE FRONT AS THESE DYNAMIC ELEMENTS COME
TOGETHER OVER SRN MD/DELMARVA BEFORE THE FRONT SWEEP THIS ACTIVITY
OFF THE COAST. THE TIMING FOR A BULK OF THIS ACTIVITY LOOKS TO BE
LATE TONIGHT INTO THE EARLY MRNG HRS FRI.
FROM PREV DISC...
RAINFALL AMOUNTS AROUND ONE HALF TO ONE INCH ARE EXPECTED. STRONG
WARM ADVECTION AHEAD OF THE COLD FRONT MAY CAUSE LIMITED
INSTABILITY ACROSS LOWER SOUTHERN MARYLAND. HAVE SLIGHT CHANCE FOR
THUNDER IN THE FORECAST...BUT THE INVERSION SHOULD BE STRONG
ENOUGH TO PREVENT ANY SEVERE T-STORMS FROM DEVELOPING.
STRONG WINDS ARE EXPECTED JUST A FEW THOUSAND FEET FROM THE SURFACE
DUE TO A POTENT LOW-LEVEL JET TONIGHT. A STRONG PRESSURE PRESSURE
GRADIENT WILL CAUSE BREEZY CONDITIONS AT THE SURFACE...BUT THE
STRONGEST WINDS WILL LIKELY BE CONFINED TO EXPOSED RIDGE TOPS. A
WIND ADVISORY MAY BE NEEDED FOR SOME OF THESE AREAS
TONIGHT...ESPECIALLY ALONG AND WEST OF THE ALLEGHENY FRONT.
MAX TEMPS TODAY WILL RANGE FROM THE MID 40S ALONG THE MASON-DIXON
LINE TO THE LOWER AND MIDDLE 50S IN LOWER SOUTHERN MARYLAND. TEMPS
MAY ACTUALLY RISE THIS EVENING BEFORE FALLING BEHIND A COLD FRONT
OVERNIGHT. MIN TEMPS WILL RANGE FROM THE TEENS IN THE ALLEGHENY
HIGHLANDS TO THE LOWER AND MIDDLE 40S ACROSS WASHINGTON DC/BALTIMORE
INTO LOWER SOUTHERN MARYLAND.
STRONG COLD ADVECTION BEHIND THE COLD FRONT OVERNIGHT ALONG WITH AN
UPSLOPE FLOW WILL CAUSE SNOW SHOWERS TO DEVELOP AFTER MIDNIGHT FOR
LOCATIONS ALONG AND WEST OF THE ALLEGHENY FRONT. PLENTY OF MOISTURE
AND LIFT ASSOCIATED WITH THIS SYSTEM WILL CAUSE SIGNIFICANT SNOWFALL
ACCUMULATIONS...BUT THE HEAVIEST SNOW IS LIKELY TO HOLD OFF UNTIL
FRIDAY. A WINTER STORM WARNING IS IN EFFECT FOR THESE AREAS
BEGINNING AT 1 AM FRIDAY MORNING.
&&
.SHORT TERM /FRIDAY THROUGH FRIDAY NIGHT/...
STRONG COLD WILL BE OFFSHORE BY 12Z FRIDAY...BUT WIND SHIFT WILL BE
SEVERAL HOURS BEHIND THE ACTUAL BOUNDARY.
PRECIP ASSOCIATED WITH THE COLD FRONTAL PASSAGE WILL END EARLY
FRIDAY MORNING. HOWEVER...THE COMBINATION OF NW FLOW OFF THE GREAT
LAKES AND STRONG MID LEVEL FORCING WILL HELP CONTINUE THE CHANCES OF
PRECIPITATION THROUGH THE REMAINDER OF THE AFTERNOON INTO THE
EVENING HOURS.
DURING THE DAY FRIDAY...THE MAIN PTYPE FOR THE METRO AREAS WILL BE
RAIN. SURFACE TEMPS WILL BE IN THE MIDDLE TO UPPER 40S. OUT WEST...A
RASN MIX OR ALL SNOW IS EXPECTED. ACCUMULATING SNOW WILL MAINLY BE
CONFINED TO THE WESTERN SLOPES OF THE POTOMAC HIGHLANDS. STRONG LIFT
WITHIN THE SNOW GROWTH ZONE WILL PROMOTE WIDESPREAD SNOW SHOWERS
ALONG THE WESTERN FACING SLOPES...WITH MODERATE TO HEAVY SNOW AT
TIMES. THERE IS A PRETTY WIDE RANGE OF QPF VALUES BETWEEN THE
MODELS...WITH THE GFS WITH THE LEAST. WILL GO WITH THE HIGHER
QPF/SNOW VALUES...AS CONDITIONS WILL BE OPTIMAL FOR UPSLOPE SNOWS.
SCT RASN SHOWERS WILL BE POSSIBLE...EVEN INTO THE METRO
AREAS...FRIDAY NIGHT EAST OF THE HIGHLANDS. LITTLE IF ANY
ACCUMULATION OF SNOW IS LIKELY.
BREEZY/WINDY CONDITIONS WILL ALSO BE AN ISSUE FOR FRIDAY AND
SATURDAY. RIGHT NOW...IT LOOKS LIKE THE HIGHEST WINDS WILL MAINLY BE
CONFINED TO THE RIDGE TOPS ON FRIDAY...BUT GOOD MIXING ON SATURDAY
WILL HELP THE STRONG GUSTS MAKE IT TO THE SURFACE MOST EVERYWHERE.
WIND ADVISORIES WILL BE LIKELY BOTH DAYS FOR PORTIONS OF THE CWFA.
AS TO THE WSW HEADLINE...NEAR BLIZZARD CONDITIONS ARE POSSIBLE
ACROSS THE WESTERN FIVE ZONES. WILL HOLD OFF ISSUING A BLIZZARD
WARNING AT THIS TIME...AND WILL UPGRADE IF NECESSARY DOWN THE LINE.
WILL MENTION THE NEAR BLIZZARD CONDITIONS WITHIN THE WSW TEXT FOR
IMPACTS.
&&
.LONG TERM /SATURDAY THROUGH WEDNESDAY/...
UPSLOPE SNOW SHOWERS WILL CONTINUE THROUGH SATURDAY...BUT BEGIN TO
TAPER OFF LATER IN THE AFTERNOON. WEAK HIGH PRESSURE WILL BUILD IN
ACROSS THE AREA FOR THE REMAINDER OF THE WEEKEND.
FOR MONDAY THROUGH WEDNESDAY...THERE IS SOME UNCERTAINLY WITHIN THE
FORECAST. MODELS BRING A POTENT SHORTWAVE THROUGH THE REGION MONDAY
NIGHT INTO TUESDAY...PRODUCING SOME LIGHT PRECIP. POPS REMAIN LOW AT
THIS TIME...AND WILL HAVE TO CONTINUE MONITORING THE DEVELOPMENT OF
THIS SYSTEM.
THE NEXT COLD FRONT...AND POSSIBLE COASTAL LOW PRESSURE
SYSTEM...MOVES THROUGH FOR THE LATTER HALF OF THE WEEK.
&&
.AVIATION /15Z THURSDAY THROUGH MONDAY/...
VFR CONDITIONS EXPECTED THROUGH EARLY AFTERNOON. HOWEVER...CLOUDS
WILL CONTINUE TO LOWER LATE THIS AFTERNOON AS RAIN OVERSPREADS THE
TERMINALS. CIGS/VSBYS WILL DROP TO MVFR LEVELS LATER THIS
AFTERNOON BEFORE EVENTUALLY DROPPING TO IFR LEVELS THIS EVENING.
IFR/SUBIFR CIGS/VSBYS ARE EXPECTED THIS EVENING AND OVERNIGHT.
CONDITIONS WILL IMPROVE BEHIND A COLD FRONT TOWARD FRIDAY MORNING.
WILL HAVE TO WATCH FOR LOW-LEVEL WIND SHEAR TONIGHT. A STRONG
LOW-LEVEL JET WILL CAUSE WIND SPEEDS OVER 50 KNOTS AROUND 2KFT.
SOUTHEAST WINDS AHEAD OF A COLD FRONT WILL GUST AROUND 20 TO 25
KNOTS THIS AFTERNOON AND TONIGHT. THE WINDS WILL SHIFT TO THE WEST
TOWARD FRIDAY MORNING.
CIGS/VSBYS WILL IMPROVE FAIRLY RAPIDLY EARLY FRIDAY MORNING AS A
COLD FRONT MOVES OFF THE EASTERN SEABOARD. HOWEVER...SCT SHOWERS
WILL CONTINUE POSSIBLE ACROSS THE REGION INTO THE EARLY EVENING
HOURS.
WINDS WILL BE THE MAIN STORY FOR FRIDAY AND SATURDAY. W/NW WINDS
WILL FREQUENTLY GUSTS TO AROUND 35 KT BOTH DAYS.
NO SIGNIFICANT RESTRICTIONS ANTICIPATED FOR SATURDAY INTO EARLY
SUNDAY.
&&
.MARINE...
HIGH PRESSURE WILL MOVE OFF THE COAST TODAY. THE PRESSURE GRADIENT
WILL INCREASE BETWEEN THE DEPARTING HIGH AND A STRONG COLD FRONT
THAT WILL BE TRACKING THROUGH THE OHIO VALLEY. A SMALL CRAFT
ADVISORY IS IN EFFECT FOR THE WATERS THIS AFTERNOON.
THE COLD FRONT WILL APPROACH THE WATERS TONIGHT BEFORE PASSING
THROUGH TOWARD FRIDAY MORNING. A STRONG PRESSURE GRADIENT WILL CAUSE
GUSTY WINDS. SOLID SCA WINDS ARE EXPECTED ACROSS THE UPPER TIDAL
POTOMAC RIVER AND NORTHERN PORTION OF THE MARYLAND CHESAPEAKE BAY. A
SMALL CRAFT ADVISORY IS IN EFFECT FOR THESE AREAS. WINDS WILL GUST
AROUND 30 KNOTS. A GALE WARNING IS IN EFFECT FOR THE MIDDLE PORTION
OF THE MARYLAND CHESAPEAKE BAY AND LOWER TIDAL POTOMAC RIVER
TONIGHT. WIND GUSTS AROUND 35 KNOTS ARE EXPECTED.
A COLD FRONT WILL MOVE OFF THE EASTERN SEABOARD EARLY FRIDAY
MORNING. WEAK HIGH PRESSURE WILL BUILD OVER THE WATERS FOR THE
REMAINDER OF THE WEEKEND.
RAISED A GALE WARNING FOR FRIDAY. GUSTS WILL INCREASE THROUGH THE
MORNING...AND FREQUENT GUSTS TO 35-40 KT WILL BECOME LIKELY ACROSS
THE ENTIRE MARINE AREA BY LATE MORNING. GALE CONDITIONS WILL
CONTINUE INTO THE OVERNIGHT HOURS.
GALES WILL CONTINUE INTO SATURDAY...WITH A PERIOD OF STORM WARNING
CONDITIONS POSSIBLE. SMALL CRAFT CONDITIONS LIKELY WILL CONTINUE
INTO PORTIONS OF SUNDAY.
&&
.TIDES/COASTAL FLOODING...
HIGH PRESSURE WILL MOVE OFF THE COAST TODAY AND A SOUTHEAST FLOW IS
EXPECTED TO STRENGTHEN. A STRONG COLD FRONT WILL APPROACH THE WATERS
TONIGHT BEFORE PASSING THROUGH TOWARD FRIDAY MORNING. THE SOUTHEAST
FLOW WILL CONTINUE TO STRENGTHEN.
THE STRONG ONSHORE FLOW AHEAD OF THE COLD FRONT WILL CAUSE TIDAL
ANOMALIES TO RAPIDLY RISE THIS AFTERNOON THROUGH TONIGHT. A COASTAL
FLOOD ADVISORY IS NOW IN EFFECT FOR THE WESTERN SHORE COUNTIES OF
THE MD BAY...W/ MINOR FLOODING EXPECTED. WILL CONSIDER A COASTAL
FLOOD WATCH FOR MODERATE FLOODING FOR THE EARLY-MID MORNING HIGH
TIDE CYCLE. HOWEVER...DID NOT ISSUE AS OF YET DUE TO THE FACT THAT
THE ASTRONOMICAL NORMS ARE LOW AND THE TIMING OF HIGH TIDES DO NOT
MATCH UP WITH THE TIMING OF THE STRONGEST SOUTHERLY FLOW. WILL
HAVE TO MONITOR THIS SITUATION THROUGH THE DAY.
&&
.LWX WATCHES/WARNINGS/ADVISORIES...
DC...NONE.
MD...WINTER STORM WARNING FROM 1 AM FRIDAY TO 6 PM EST SATURDAY FOR
MDZ501.
COASTAL FLOOD ADVISORY FROM 6 PM THIS EVENING TO 6 AM EST
FRIDAY FOR MDZ007-011-014-016>018.
VA...WINTER STORM WARNING FROM 1 AM FRIDAY TO 6 PM EST SATURDAY FOR
VAZ503.
COASTAL FLOOD ADVISORY FROM 6 PM THIS EVENING TO 6 AM EST
FRIDAY FOR VAZ057.
WV...WINTER STORM WARNING FROM 1 AM FRIDAY TO 6 PM EST SATURDAY FOR
WVZ501-503-505.
MARINE...SMALL CRAFT ADVISORY UNTIL 6 PM EST THIS EVENING FOR
ANZ532>534-537-540>543.
GALE WARNING FROM 6 PM THIS EVENING TO 7 PM EST FRIDAY FOR
ANZ532>534-537-540>543.
SMALL CRAFT ADVISORY UNTIL 6 AM EST FRIDAY FOR ANZ530-531-535-
536-538-539.
GALE WARNING FROM 6 AM TO 7 PM EST FRIDAY FOR ANZ530-531-535-
536-538-539.
&&
UPDATE...GMS
PREV DISCUSSION...BJL/LISTEMAAHazardous weather outlook, Dec 20, 10:27 AM EST, 3 hours 44 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 1027 AM EST THU DEC 20 2012 ANZ530>543-DCZ001-MDZ006-007-011-013-014-016>018-VAZ052>057- 211000- 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- 1027 AM EST THU DEC 20 2012 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...TODAY AND TONIGHT A SMALL CRAFT ADVISORY IS IN EFFECT FOR THE TIDAL POTOMAC AND MARYLAND CHESAPEAKE BAY THIS AFTERNOON. SMALL CRAFT CONDITIONS WILL CONTINUE INTO THE OVERNIGHT HOURS FOR THE UPPER TIDAL POTOMAC AND NORTHERN CHESAPEAKE BAY. A GALE WARNING HAS BEEN ISSUED FROM SANDY POINT TO SMITH POINT AND THE LOWER TIDAL POTOMAC SOUTH OF COBB ISLAND OVERNIGHT. A COASTAL FLOOD ADVISORY IS IN EFFECT FOR THE MARYLAND WESTERN SHORE COUNTIES ALONG THE CHESAPEAKE BAY...FROM LATE THIS EVENING INTO EARLY FRIDAY MORNING. STRONG AND PROLONGED SOUTHEASTERLY FLOW WILL CONTRIBUTE TO ELEVATED TIDES TONIGHT. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY STRONG GUSTY WINDS ARE EXPECTED FRIDAY AND SATURDAY. WIND GUSTS FRIDAY MAY REACH 40 TO 50 MPH...AND WIND GUSTS SATURDAY COULD REACH 50 TO 60 MPH. GALE FORCE WINDS WINDS WILL LIKELY CONTINUE INTO FRIDAY NIGHT AND SATURDAY. A PERIOD OF STORM FORCE WINDS MAY ALSO BE POSSIBLE ON SATURDAY. ELEVATED TIDAL LEVELS MAY CONTINUE INTO MIDDAY FRIDAY ALONG THE WESTERN SHORE OF THE MARYLAND CHESAPEAKE BAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. MDZ003>005-009-010-501-502-VAZ025>031-036>040-042-050-051-501>504- WVZ050>053-055-501>506-211000- 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- 1027 AM EST THU DEC 20 2012 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...TODAY AND TONIGHT A WINTER STORM WARNING HAS BEEN ISSUED FOR THE WESTERN SLOPES OF THE ALLEGHENY AND POTOMAC HIGHLANDS BEGINNING LATE TONIGHT. SEE WBCWSWLWX FOR FURTHER DETAILS. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY THE WINTER STORM WARNING CONTINUES THROUGH LATE SATURDAY AFTERNOON. SEE WBCWSWLWX FOR FURTHER DETAILS. STRONG GUSTY WINDS ARE EXPECTED FRIDAY AND SATURDAY. WIND GUSTS FRIDAY MAY REACH 40 TO 50 MPH...AND WIND GUSTS SATURDAY COULD REACH 50 TO 60 MPH. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME...BUT SNOWFALL TOTALS WOULD BE GREATLY APPRECIATED.
The office that day
Everything else NWS Baltimore/Washington issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 20, 3:05 AM EST | Winter Storm Warning | LWX | Allegany | 11 hr |
| Dec 20, 10:23 AM EST | Coastal Flood Advisory | LWX | Anne Arundel, Baltimore, Calvert, Charles, Prince George's, Saint Mary's and 1 more | 37 hr |
| Dec 20, 2:11 PM EST | High Wind Watch | LWX | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Charles and 5 more | 23 hr |
| Dec 20, 2:12 PM EST | Blizzard Warning | LWX | Allegany | 50 hr |
| Dec 20, 5:43 PM EST | Winter Weather Advisory | LWX | Allegany | 7 hr |
| Dec 20, 3:37 AM EST | Gale Warning | LWX | 62 hr |
Nearby
Wind Advisories in Virginia, 2012Wind Advisories in Maryland, 2012Wind Advisories in West Virginia, 2012Every wind advisory in 2012
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.