Alert archive / Maryland / Winter Storm Warnings in 2011
Winter Storm Warning 2, NWS Baltimore/Washington
NWS Baltimore/Washington issued this winter storm warning at Jan 17, 2011, 10:37 PM EST for 4 counties in Maryland. It was in force for 10 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jan 17, 2011, 10:37 PM EST (03:37 UTC)
- Expired
- Jan 18, 2011, 8:42 AM EST
- In force
- 10 hr
- Issued by
- NWS Baltimore/Washington
Counties Baltimore County, MD, Carroll County, MD, City of Baltimore, MD, Frederick County, MD
The radar
The Sterling radar (KLWX), 72 km from the middle of the area, began a volume at 03:37 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, 3.6 hours before the alert went out and 69 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
- 1527 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 234 m²/s²
- 0-3 km storm-relative helicity
- 306 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
386 WWUS41 KLWX 180337 WSWLWX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 1037 PM EST MON JAN 17 2011 MDZ004>007-009>011-181145- /O.UPG.KLWX.WW.Y.0005.000000T0000Z-110118T1700Z/ /O.NEW.KLWX.WS.W.0002.110118T0337Z-110118T1700Z/ FREDERICK MD-CARROLL-NORTHERN BALTIMORE-HARFORD-MONTGOMERY-HOWARD- SOUTHERN BALTIMORE- INCLUDING THE CITIES OF...FREDERICK...WESTMINSTER... GAITHERSBURG...COLUMBIA...BALTIMORE 1037 PM EST MON JAN 17 2011 ...WINTER STORM WARNING IN EFFECT UNTIL NOON EST TUESDAY... THE NATIONAL WEATHER SERVICE IN BALTIMORE MD/WASHINGTON HAS ISSUED A WINTER STORM WARNING FOR FREEZING RAIN...WHICH IS IN EFFECT UNTIL NOON EST TUESDAY. THE WINTER WEATHER ADVISORY IS NO LONGER IN EFFECT. * PRECIPITATION TYPE...SNOW...SLEET AND FREEZING RAIN. FREEZING RAIN WILL HAVE THE MOST SIGNIFICANT IMPACT. * ACCUMULATIONS...ONE INCH OR LESS OF SNOW AND SLEET ACCUMULATION. TWO TO THREE TENTHS OF AN INCH OF ICE ACCUMULATION. ICE ACCUMULATIONS WILL BE HIGHEST ACROSS THE NORTHERN AND WESTERN SUBURBS OF BALTIMORE. * TIMING...A MIX OF SNOW AND SLEET THIS EVENING. PRECIPITATION IS EXPECTED TO CHANGE TO FREEZING RAIN BETWEEN 11 PM AND 2 AM...AND CONTINUE OVERNIGHT INTO THE RUSH HOUR COMMUTE TUESDAY MORNING. FREEZING RAIN WILL CHANGE TO RAIN FROM SOUTHEAST TO NORTHWEST BY LATE MORNING. * TEMPERATURES...MID TO UPPER 20S TONIGHT AND EARLY TUESDAY MORNING...RISING TO THE LOW 30S BY THE MID MORNING. HIGHS TUESDAY AFTERNOON IN THE UPPER 30S. * WINDS...NORTHEAST 5 TO 10 MPH TONIGHT. BECOMING NORTHWEST 10 TO 15 MPH TUESDAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW... SLEET...AND ICE ARE EXPECTED OR OCCURRING. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. && $$ MDZ017-018-VAZ057-180500- /O.CON.KLWX.ZR.Y.0001.000000T0000Z-110118T0500Z/ ST. MARYS-CALVERT-KING GEORGE- INCLUDING THE CITY OF...ST MARYS CITY 1037 PM EST MON JAN 17 2011 ...FREEZING RAIN ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT EST TONIGHT... A FREEZING RAIN ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT EST TONIGHT. * PRECIPITATION TYPE...FREEZING RAIN * ACCUMULATIONS...ICE ACCUMULATIONS RANGING FROM A TRACE TO A FEW HUNDREDTHS OF AN INCH. * TIMING...FREEZING RAIN IS OVERSPREADING THE AREA. AFTER A FEW HOURS OF FREEZING RAIN THIS EVENING...PRECIPITATION WILL CHANGE TO RAIN BY MIDNIGHT. * TEMPERATURES...AROUND 30 DEGREES INLAND TO MID 30S ALONG THE IMMEDIATE COAST THIS EVENING. TEMPERATURES WILL RISE INTO THE MID 30S EVERYWHERE BY MIDNIGHT. * WINDS...NORTHEAST 5 TO 10 MPH TONIGHT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZING RAIN ADVISORY MEANS THAT PERIODS OF FREEZING RAIN OR FREEZING DRIZZLE WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS. SLOW DOWN AND USE CAUTION WHILE DRIVING. && $$ VAZ025-026-036>039-050-056-504-WVZ506-181145- /O.CON.KLWX.WW.Y.0005.000000T0000Z-110118T1400Z/ AUGUSTA-ROCKINGHAM-NELSON-ALBEMARLE-GREENE-MADISON-ORANGE- SPOTSYLVANIA-EASTERN HIGHLAND-EASTERN PENDLETON- INCLUDING THE CITIES OF...STAUNTON...WAYNESBORO...HARRISONBURG... CHARLOTTESVILLE...FREDERICKSBURG...MONTEREY...FRANKLIN 1037 PM EST MON JAN 17 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST TUESDAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST TUESDAY. * PRECIPITATION TYPE...FREEZING RAIN. FREEZING RAIN MAY BRIEFLY MIX IN WITH SNOW AND SLEET AT THE ONSET THIS EVENING. * ACCUMULATIONS...UP TO ONE TENTH OF AN INCH OF ICE ACCUMULATION. LITTLE OR NO SNOW AND SLEET ACCUMULATION. * TIMING...A MIX OF FREEZING RAIN...SNOW AND SLEET IS EXPECTED TO CHANGE TO FREEZING RAIN BY MIDNIGHT. FREEZING RAIN WILL CONTINUE THROUGH MUCH OF THE NIGHT BEFORE CHANGING TO RAIN EARLY TUESDAY MORNING. * TEMPERATURES...LOWER 30S TONIGHT AND EARLY TUESDAY MORNING. HIGHS TUESDAY AFTERNOON IN THE MID 40S. * WINDS...NORTHEAST 5 TO 10 MPH TONIGHT. BECOMING NORTHWEST 5 TO 10 MPH TUESDAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ MDZ003-501-502-VAZ027>031-WVZ050>053-055-502>504-181145- /O.CON.KLWX.WW.Y.0005.000000T0000Z-110118T1700Z/ WASHINGTON-EXTREME WESTERN ALLEGANY-CENTRAL AND EASTERN ALLEGANY- SHENANDOAH-FREDERICK VA-PAGE-WARREN-CLARKE-HAMPSHIRE-MORGAN- BERKELEY-JEFFERSON-HARDY-EASTERN GRANT-WESTERN MINERAL- EASTERN MINERAL- INCLUDING THE CITIES OF...HAGERSTOWN...FROSTBURG...CUMBERLAND... WINCHESTER...FRONT ROYAL...MARTINSBURG...CHARLES TOWN... MOOREFIELD...PETERSBURG...ELK GARDEN...KEYSER...FORT ASHBY 1037 PM EST MON JAN 17 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON EST TUESDAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON EST TUESDAY. * PRECIPITATION TYPE...SNOW...SLEET AND FREEZING RAIN. * ACCUMULATIONS...AROUND 1 INCH OF SNOW AND SLEET ACCUMULATION. AROUND ONE TENTH OF AN INCH OF ICE ACCUMULATION. * TIMING...A MIX OF SNOW AND SLEET WILL CHANGE TO FREEZING RAIN BETWEEN MIDNIGHT AND 3 AM. FREEZING RAIN IS EXPECTED TO CONTINUE THROUGH MID MORNING TUESDAY BEFORE CHANGING TO RAIN BY LATE MORNING. * TEMPERATURES...UPPER 20S TONIGHT AND EARLY TUESDAY MORNING. HIGHS TUESDAY AFTERNOON IN THE UPPER 30S. * WINDS...NORTHEAST 5 TO 10 MPH TONIGHT. BECOMING NORTHWEST 5 TO 10 MPH TUESDAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ DCZ001-MDZ013-014-016-VAZ040-051>055-501-502-181145- /O.CON.KLWX.WW.Y.0005.000000T0000Z-110118T1400Z/ DISTRICT OF COLUMBIA-PRINCE GEORGES-ANNE ARUNDEL-CHARLES- RAPPAHANNOCK-CULPEPER-PRINCE WILLIAM/MANASSAS/MANASSAS PARK- FAIRFAX-ARLINGTON/FALLS CHURCH/ALEXANDRIA-STAFFORD- NORTHERN FAUQUIER-SOUTHERN FAUQUIER- INCLUDING THE CITIES OF...WASHINGTON...ANNAPOLIS...WALDORF... CULPEPER...MANASSAS...MANASSAS PARK...FAIRFAX...ALEXANDRIA... FALLS CHURCH...WARRENTON 1037 PM EST MON JAN 17 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST TUESDAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST TUESDAY. * PRECIPITATION TYPE...SNOW...SLEET AND FREEZING RAIN. FREEZING RAIN WILL HAVE THE MOST SIGNIFICANT IMPACT. * ACCUMULATIONS...LESS THAN ONE INCH OF SNOW AND SLEET ACCUMULATION. AROUND ONE TENTH OF AN INCH OF ICE ACCUMULATION. * TIMING...A MIX OF SNOW AND SLEET WILL QUICKLY CHANGE TO FREEZING RAIN BETWEEN 10 PM AND 1 AM...AND CONTINUE THROUGH MUCH OF THE NIGHT. FREEZING RAIN WILL THEN CHANGE TO RAIN EARLY TUESDAY MORNING. * TEMPERATURES...AROUND 30 TONIGHT...RISING TO THE MID 30S BY EARLY TUESDAY MORNING. HIGHS TUESDAY AFTERNOON AROUND 40. * WINDS...NORTHEAST 5 TO 10 MPH TONIGHT. BECOMING NORTHWEST 10 TO 15 MPH TUESDAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ VAZ042-181145- /O.CON.KLWX.WW.Y.0005.000000T0000Z-110118T1700Z/ LOUDOUN- INCLUDING THE CITY OF...LEESBURG 1037 PM EST MON JAN 17 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON EST TUESDAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON EST TUESDAY. * PRECIPITATION TYPE...SNOW...SLEET AND FREEZING RAIN. FREEZING RAIN WILL HAVE THE MOST SIGNIFICANT IMPACT. * ACCUMULATIONS...ONE INCH OR LESS OF SNOW AND SLEET ACCUMULATION. ONE TO TWO TENTHS OF AN INCH OF ICE ACCUMULATION. * TIMING...A MIX OF SNOW AND SLEET WILL CHANGE TO FREEZING RAIN BETWEEN 11 PM AND 1 AM...AND CONTINUE OVERNIGHT INTO EARLY TUESDAY MORNING. FREEZING RAIN WILL CHANGE TO RAIN FROM SOUTHEAST TO NORTHWEST BY LATE MORNING. * TEMPERATURES...UPPER 20S TONIGHT AND EARLY TUESDAY MORNING. HIGHS TUESDAY AFTERNOON IN THE UPPER 30S. * WINDS...NORTHEAST 5 TO 10 MPH TONIGHT. BECOMING NORTHWEST 10 TO 15 MPH TUESDAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ VAZ503-WVZ501-505-181145- /O.CON.KLWX.WW.Y.0005.000000T0000Z-110118T1400Z/ WESTERN HIGHLAND-WESTERN GRANT-WESTERN PENDLETON- INCLUDING THE CITIES OF...HIGHTOWN...BAYARD...MOUNT STORM... CIRCLEVILLE 1037 PM EST MON JAN 17 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST TUESDAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST TUESDAY. * PRECIPITATION TYPE...SNOW...SLEET AND FREEZING RAIN. * ACCUMULATIONS...AROUND 2 INCHES OF SNOW AND SLEET ACCUMULATION. LESS THAN ONE TENTH OF AN INCH OF ICE ACCUMULATION. * TIMING...A MIX OF SNOW AND SLEET WILL DEVELOP BETWEEN NOW AND 9 PM. PRECIPITATION WILL CHANGE TO FREEZING RAIN BETWEEN MIDNIGHT AND 3 AM. FREEZING RAIN IS EXPECTED TO CONTINUE THROUGH EARLY TUESDAY MORNING BEFORE CHANGING TO RAIN BY LATE MORNING. * TEMPERATURES...UPPER 20S TONIGHT AND EARLY TUESDAY MORNING. HIGHS TUESDAY AFTERNOON IN THE UPPER 30S. * WINDS...NORTHEAST 5 TO 10 MPH TONIGHT. BECOMING NORTHWEST 5 TO 10 MPH TUESDAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$
5 follow-up statements
085 WWUS41 KLWX 180457 WSWLWX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 1157 PM EST MON JAN 17 2011 MDZ004>007-009>011-181300- /O.CON.KLWX.WS.W.0002.000000T0000Z-110118T1700Z/ FREDERICK MD-CARROLL-NORTHERN BALTIMORE-HARFORD-MONTGOMERY-HOWARD- SOUTHERN BALTIMORE- INCLUDING THE CITIES OF...FREDERICK...WESTMINSTER... GAITHERSBURG...COLUMBIA...BALTIMORE 1157 PM EST MON JAN 17 2011 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON EST TUESDAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON EST TUESDAY. * PRECIPITATION TYPE...SNOW...SLEET AND FREEZING RAIN. FREEZING RAIN WILL HAVE THE MOST SIGNIFICANT IMPACT. * ACCUMULATIONS...ONE TO TWO INCHES SNOW AND SLEET ACCUMULATION. TWO TO THREE TENTHS OF AN INCH OF ICE ACCUMULATION. ICE ACCUMULATIONS WILL BE HIGHEST ACROSS THE NORTHERN AND WESTERN SUBURBS OF BALTIMORE. * TIMING...A MIX OF SNOW AND SLEET THROUGH MIDNIGHT. PRECIPITATION IS EXPECTED TO CHANGE TO FREEZING RAIN BETWEEN MIDNIGHT AND 3 AM... AND CONTINUE OVERNIGHT INTO THE RUSH HOUR COMMUTE TUESDAY MORNING. FREEZING RAIN WILL CHANGE TO RAIN FROM SOUTHEAST TO NORTHWEST BY LATE MORNING. * TEMPERATURES...MID TO UPPER 20S TONIGHT AND EARLY TUESDAY MORNING...RISING TO THE LOW 30S BY THE MID MORNING. HIGHS TUESDAY AFTERNOON IN THE UPPER 30S. * WINDS...NORTHEAST 5 TO 10 MPH TONIGHT. BECOMING NORTHWEST 10 TO 15 MPH TUESDAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW... SLEET...AND ICE ARE EXPECTED OR OCCURRING. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. && $$ MDZ017-018-VAZ057-181100- /O.EXT.KLWX.ZR.Y.0001.000000T0000Z-110118T1100Z/ ST. MARYS-CALVERT-KING GEORGE- INCLUDING THE CITY OF...ST MARYS CITY 1157 PM EST MON JAN 17 2011 ...FREEZING RAIN ADVISORY NOW IN EFFECT UNTIL 6 AM EST TUESDAY... THE FREEZING RAIN ADVISORY IS NOW IN EFFECT UNTIL 6 AM EST TUESDAY. * PRECIPITATION TYPE...FREEZING RAIN * ACCUMULATIONS...ICE ACCUMULATIONS UP TO ONE TENTH INCH. * TIMING...FREEZING RAIN WILL CONTINUE INTO THE EARLY MORNING HOURS...GRADUALLY CHANGING TO RAIN FROM SOUTH TO NORTH BY SUNRISE. * TEMPERATURES...LOWER 30S. * WINDS...NORTHEAST 5 TO 10 MPH TONIGHT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZING RAIN ADVISORY MEANS THAT PERIODS OF FREEZING RAIN OR FREEZING DRIZZLE WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS. SLOW DOWN AND USE CAUTION WHILE DRIVING. && $$ VAZ025-026-036>039-050-056-504-WVZ506-181300- /O.CON.KLWX.WW.Y.0005.000000T0000Z-110118T1400Z/ AUGUSTA-ROCKINGHAM-NELSON-ALBEMARLE-GREENE-MADISON-ORANGE- SPOTSYLVANIA-EASTERN HIGHLAND-EASTERN PENDLETON- INCLUDING THE CITIES OF...STAUNTON...WAYNESBORO...HARRISONBURG... CHARLOTTESVILLE...FREDERICKSBURG...MONTEREY...FRANKLIN 1157 PM EST MON JAN 17 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST TUESDAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST TUESDAY. * PRECIPITATION TYPE...FREEZING RAIN. FREEZING RAIN MAY BRIEFLY MIX IN WITH SNOW AND SLEET AT THE ONSET THIS EVENING. * ACCUMULATIONS...UP TO ONE TENTH OF AN INCH OF ICE ACCUMULATION. LITTLE OR NO SNOW AND SLEET ACCUMULATION. * TIMING...A MIX OF FREEZING RAIN...SNOW AND SLEET IS EXPECTED TO CHANGE TO FREEZING RAIN BY MIDNIGHT. FREEZING RAIN WILL CONTINUE THROUGH MUCH OF THE NIGHT BEFORE CHANGING TO RAIN EARLY TUESDAY MORNING. * TEMPERATURES...LOWER 30S TONIGHT AND EARLY TUESDAY MORNING. HIGHS TUESDAY AFTERNOON IN THE MID 40S. * WINDS...NORTHEAST 5 TO 10 MPH TONIGHT. BECOMING NORTHWEST 5 TO 10 MPH TUESDAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ MDZ003-501-502-VAZ027>031-WVZ050>053-055-502>504-181300- /O.CON.KLWX.WW.Y.0005.000000T0000Z-110118T1700Z/ WASHINGTON-EXTREME WESTERN ALLEGANY-CENTRAL AND EASTERN ALLEGANY- SHENANDOAH-FREDERICK VA-PAGE-WARREN-CLARKE-HAMPSHIRE-MORGAN- BERKELEY-JEFFERSON-HARDY-EASTERN GRANT-WESTERN MINERAL- EASTERN MINERAL- INCLUDING THE CITIES OF...HAGERSTOWN...FROSTBURG...CUMBERLAND... WINCHESTER...FRONT ROYAL...MARTINSBURG...CHARLES TOWN... MOOREFIELD...PETERSBURG...ELK GARDEN...KEYSER...FORT ASHBY 1157 PM EST MON JAN 17 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON EST TUESDAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON EST TUESDAY. * PRECIPITATION TYPE...SNOW...SLEET AND FREEZING RAIN. * ACCUMULATIONS...AROUND 1 INCH OF SNOW AND SLEET ACCUMULATION. AROUND ONE TENTH OF AN INCH OF ICE ACCUMULATION. * TIMING...A MIX OF SNOW AND SLEET WILL CHANGE TO FREEZING RAIN BETWEEN MIDNIGHT AND 3 AM. FREEZING RAIN IS EXPECTED TO CONTINUE THROUGH MID MORNING TUESDAY BEFORE CHANGING TO RAIN BY LATE MORNING. * TEMPERATURES...UPPER 20S TONIGHT AND EARLY TUESDAY MORNING. HIGHS TUESDAY AFTERNOON IN THE UPPER 30S. * WINDS...NORTHEAST 5 TO 10 MPH TONIGHT. BECOMING NORTHWEST 5 TO 10 MPH TUESDAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ DCZ001-MDZ013-014-016-VAZ040-051>055-501-502-181300- /O.CON.KLWX.WW.Y.0005.000000T0000Z-110118T1400Z/ DISTRICT OF COLUMBIA-PRINCE GEORGES-ANNE ARUNDEL-CHARLES- RAPPAHANNOCK-CULPEPER-PRINCE WILLIAM/MANASSAS/MANASSAS PARK- FAIRFAX-ARLINGTON/FALLS CHURCH/ALEXANDRIA-STAFFORD- NORTHERN FAUQUIER-SOUTHERN FAUQUIER- INCLUDING THE CITIES OF...WASHINGTON...ANNAPOLIS...WALDORF... CULPEPER...MANASSAS...MANASSAS PARK...FAIRFAX...ALEXANDRIA... FALLS CHURCH...WARRENTON 1157 PM EST MON JAN 17 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST TUESDAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST TUESDAY. * PRECIPITATION TYPE...SNOW...SLEET AND FREEZING RAIN. FREEZING RAIN WILL HAVE THE MOST SIGNIFICANT IMPACT. * ACCUMULATIONS...LESS THAN ONE INCH OF SNOW AND SLEET ACCUMULATION. AROUND ONE TENTH OF AN INCH OF ICE ACCUMULATION. * TIMING...A MIX OF SNOW AND SLEET WILL QUICKLY CHANGE TO FREEZING RAIN BETWEEN 11 PM AND 1 AM...AND CONTINUE THROUGH MUCH OF THE NIGHT. FREEZING RAIN WILL THEN CHANGE TO RAIN EARLY TUESDAY MORNING. * TEMPERATURES...AROUND 30 TONIGHT...RISING TO THE MID 30S BY EARLY TUESDAY MORNING. HIGHS TUESDAY AFTERNOON AROUND 40. * WINDS...NORTHEAST 5 TO 10 MPH TONIGHT. BECOMING NORTHWEST 10 TO 15 MPH TUESDAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ VAZ042-181300- /O.CON.KLWX.WW.Y.0005.000000T0000Z-110118T1700Z/ LOUDOUN- INCLUDING THE CITY OF...LEESBURG 1157 PM EST MON JAN 17 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON EST TUESDAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON EST TUESDAY. * PRECIPITATION TYPE...SNOW...SLEET AND FREEZING RAIN. FREEZING RAIN WILL HAVE THE MOST SIGNIFICANT IMPACT. * ACCUMULATIONS...ONE INCH OR LESS OF SNOW AND SLEET ACCUMULATION. ONE TO TWO TENTHS OF AN INCH OF ICE ACCUMULATION. * TIMING...A MIX OF SNOW AND SLEET WILL CHANGE TO FREEZING RAIN BETWEEN 11 PM AND 1 AM...AND CONTINUE OVERNIGHT INTO EARLY TUESDAY MORNING. FREEZING RAIN WILL CHANGE TO RAIN FROM SOUTHEAST TO NORTHWEST BY LATE MORNING. * TEMPERATURES...UPPER 20S TONIGHT AND EARLY TUESDAY MORNING. HIGHS TUESDAY AFTERNOON IN THE UPPER 30S. * WINDS...NORTHEAST 5 TO 10 MPH TONIGHT. BECOMING NORTHWEST 10 TO 15 MPH TUESDAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ VAZ503-WVZ501-505-181300- /O.CON.KLWX.WW.Y.0005.000000T0000Z-110118T1400Z/ WESTERN HIGHLAND-WESTERN GRANT-WESTERN PENDLETON- INCLUDING THE CITIES OF...HIGHTOWN...BAYARD...MOUNT STORM... CIRCLEVILLE 1157 PM EST MON JAN 17 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST TUESDAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST TUESDAY. * PRECIPITATION TYPE...SNOW...SLEET AND FREEZING RAIN. * ACCUMULATIONS...AROUND 2 INCHES OF SNOW AND SLEET ACCUMULATION. LESS THAN ONE TENTH OF AN INCH OF ICE ACCUMULATION. * TIMING...A MIX OF SNOW AND SLEET WILL CHANGE TO FREEZING RAIN BETWEEN MIDNIGHT AND 3 AM. FREEZING RAIN IS EXPECTED TO CONTINUE THROUGH EARLY TUESDAY MORNING BEFORE CHANGING TO RAIN BY LATE MORNING. * TEMPERATURES...UPPER 20S TONIGHT AND EARLY TUESDAY MORNING. HIGHS TUESDAY AFTERNOON IN THE UPPER 30S. * WINDS...NORTHEAST 5 TO 10 MPH TONIGHT. BECOMING NORTHWEST 5 TO 10 MPH TUESDAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$
033 WWUS41 KLWX 180754 WSWLWX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 254 AM EST TUE JAN 18 2011 MDZ004>007-009>011-181600- /O.CON.KLWX.WS.W.0002.000000T0000Z-110118T1700Z/ FREDERICK MD-CARROLL-NORTHERN BALTIMORE-HARFORD-MONTGOMERY-HOWARD- SOUTHERN BALTIMORE- INCLUDING THE CITIES OF...FREDERICK...WESTMINSTER... GAITHERSBURG...COLUMBIA...BALTIMORE 254 AM EST TUE JAN 18 2011 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON EST TODAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON EST TODAY. * PRECIPITATION TYPE...SNOW...SLEET AND FREEZING RAIN. FREEZING RAIN WILL HAVE THE MOST SIGNIFICANT IMPACT. * ACCUMULATIONS...TWO TO FOUR INCHES SNOW AND SLEET ACCUMULATION...ESPECIALLY CLOSER TO THE PENNSYLVANIA BORDER. TWO TO THREE TENTHS OF AN INCH OF ICE ACCUMULATION ACROSS THE AREA. * TIMING...A MIX OF SNOW AND SLEET WILL GRADUALLY TRANSITION TO FREEZING RAIN EARLY THIS MORNING. FREEZING RAIN WILL CONTINUE THROUGH THE TUESDAY MORNING COMMUTE. PRECIPITATION WILL END AND TEMPERATURES WILL RISE ABOVE FREEZING BY LATE MORNING. * TEMPERATURES...MID TO UPPER 20S EARLY THIS MORNING MORNING...RISING TO THE LOW 30S BY THE MID MORNING. HIGHS TUESDAY AFTERNOON IN THE UPPER 30S. * WINDS...NORTH AT 10 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW... SLEET...AND ICE ARE EXPECTED OR OCCURRING. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. && $$ MDZ017-018-VAZ057-181100- /O.CON.KLWX.ZR.Y.0001.000000T0000Z-110118T1100Z/ ST. MARYS-CALVERT-KING GEORGE- INCLUDING THE CITY OF...ST MARYS CITY 254 AM EST TUE JAN 18 2011 ...FREEZING RAIN ADVISORY REMAINS IN EFFECT UNTIL 6 AM EST EARLY THIS MORNING... A FREEZING RAIN ADVISORY REMAINS IN EFFECT UNTIL 6 AM EST EARLY THIS MORNING. * PRECIPITATION TYPE...FREEZING RAIN * ACCUMULATIONS...ICE ACCUMULATIONS UP TO ONE TENTH INCH. * TIMING...FREEZING RAIN WILL CONTINUE THROUGH THE EARLY MORNING HOURS...GRADUALLY CHANGING TO RAIN FROM SOUTH TO NORTH BY SUNRISE. * TEMPERATURES...LOWER 30S. * WINDS...NORTHEAST 10 TO 15 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZING RAIN ADVISORY MEANS THAT PERIODS OF FREEZING RAIN OR FREEZING DRIZZLE WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS. SLOW DOWN AND USE CAUTION WHILE DRIVING. && $$ VAZ025-026-036>039-050-056-504-WVZ506-181400- /O.CON.KLWX.WW.Y.0005.000000T0000Z-110118T1400Z/ AUGUSTA-ROCKINGHAM-NELSON-ALBEMARLE-GREENE-MADISON-ORANGE- SPOTSYLVANIA-EASTERN HIGHLAND-EASTERN PENDLETON- INCLUDING THE CITIES OF...STAUNTON...WAYNESBORO...HARRISONBURG... CHARLOTTESVILLE...FREDERICKSBURG...MONTEREY...FRANKLIN 254 AM EST TUE JAN 18 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST THIS MORNING... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST THIS MORNING. * PRECIPITATION TYPE...FREEZING RAIN...OCASSIONALLY MIXED WITH SLEET. * ACCUMULATIONS...UP TO ONE TENTH OF AN INCH OF ICE ACCUMULATION. LITTLE OR SLEET ACCUMULATION. * TIMING...FREEZING RAIN AND FREEZING DRIZZLE WILL CONTINUE THROUGH EARLY MORNING BEFORE ENDING. * TEMPERATURES...NEAR 30 EARLY THIS MORNING...RISING ABOVE FREEZING BY MID MORNING HIGHS TUESDAY AFTERNOON IN THE MID 40S. * WINDS...NORTH AT 5 TO 10 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ MDZ003-501-502-VAZ027>031-WVZ050>053-055-502>504-181600- /O.CON.KLWX.WW.Y.0005.000000T0000Z-110118T1700Z/ WASHINGTON-EXTREME WESTERN ALLEGANY-CENTRAL AND EASTERN ALLEGANY- SHENANDOAH-FREDERICK VA-PAGE-WARREN-CLARKE-HAMPSHIRE-MORGAN- BERKELEY-JEFFERSON-HARDY-EASTERN GRANT-WESTERN MINERAL- EASTERN MINERAL- INCLUDING THE CITIES OF...HAGERSTOWN...FROSTBURG...CUMBERLAND... WINCHESTER...FRONT ROYAL...MARTINSBURG...CHARLES TOWN... MOOREFIELD...PETERSBURG...ELK GARDEN...KEYSER...FORT ASHBY 254 AM EST TUE JAN 18 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON EST TODAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON EST TODAY. * PRECIPITATION TYPE...SNOW...SLEET AND FREEZING RAIN. * ACCUMULATIONS...1 TO 2 INCHES OF SNOW AND SLEET ACCUMULATION. AROUND ONE TENTH OF AN INCH OF ICE ACCUMULATION. * TIMING...SNOW AND SLEET WILL MIX WITH FREEZING RAIN BY SUNRISE. FREEZING RAIN IS EXPECTED TO CONTINUE THROUGH MID MORNING BEFORE ENDING FROM SOUTH TO NORTH. * TEMPERATURES...MID TO UPPER 20S EARLY THIS MORNING...RISING TO NEAR FREEZING BY LATE MORNING. HIGHS THIS AFTERNOON IN THE UPPER 30S. * WINDS...NORTH AT 5 TO 10 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ DCZ001-MDZ013-014-016-VAZ040-051>055-501-502-181400- /O.CON.KLWX.WW.Y.0005.000000T0000Z-110118T1400Z/ DISTRICT OF COLUMBIA-PRINCE GEORGES-ANNE ARUNDEL-CHARLES- RAPPAHANNOCK-CULPEPER-PRINCE WILLIAM/MANASSAS/MANASSAS PARK- FAIRFAX-ARLINGTON/FALLS CHURCH/ALEXANDRIA-STAFFORD- NORTHERN FAUQUIER-SOUTHERN FAUQUIER- INCLUDING THE CITIES OF...WASHINGTON...ANNAPOLIS...WALDORF... CULPEPER...MANASSAS...MANASSAS PARK...FAIRFAX...ALEXANDRIA... FALLS CHURCH...WARRENTON 254 AM EST TUE JAN 18 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST THIS MORNING... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST THIS MORNING. * PRECIPITATION TYPE...SLEET AND FREEZING RAIN. FREEZING RAIN WILL HAVE THE MOST SIGNIFICANT IMPACT. * ACCUMULATIONS...LESS THAN ONE INCH SLEET ACCUMULATION. ONE TO TWO TENTHS OF AN INCH OF ICE ACCUMULATION. * TIMING...FREEZING RAIN...OCASSIONALLY MIXED WITH SLEET WILL CONTINUE EARLY THIS MORNING. PRECIPITATION WILL END BY MID MORNING. * TEMPERATURES...AROUND 30 EARLY THIS MORNING...RISING ABOVE FREEZING BY MID MORNING. * WINDS...NORTH AT 10 TO 15 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ VAZ042-181600- /O.CON.KLWX.WW.Y.0005.000000T0000Z-110118T1700Z/ LOUDOUN- INCLUDING THE CITY OF...LEESBURG 254 AM EST TUE JAN 18 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON EST TODAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON EST TODAY. * PRECIPITATION TYPE...SNOW...SLEET AND FREEZING RAIN. FREEZING RAIN WILL HAVE THE MOST SIGNIFICANT IMPACT. * ACCUMULATIONS...ONE TO TWO INCHES OF SNOW AND SLEET ACCUMULATION...MAINLY IN THE NORTHERN PART OF THE COUNTY. ONE TO TWO TENTHS OF AN INCH OF ICE ACCUMULATION. * TIMING...A MIX OF FREEZING RAIN...SLEET...AND SNOW WILL GRADUALLY TRANSITION TO PREDOMINANTLY FREEZING RAIN BY SUNRISE. PRECIPITATION WILL END LATE THIS MORNING. * TEMPERATURES...UPPER 20S EARLY THIS MORNING. HIGHS THIS AFTERNOON IN THE UPPER 30S. * WINDS...NORTH AT 10 TO 15 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ VAZ503-WVZ501-505-181400- /O.CON.KLWX.WW.Y.0005.000000T0000Z-110118T1400Z/ WESTERN HIGHLAND-WESTERN GRANT-WESTERN PENDLETON- INCLUDING THE CITIES OF...HIGHTOWN...BAYARD...MOUNT STORM... CIRCLEVILLE 254 AM EST TUE JAN 18 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST THIS MORNING... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST THIS MORNING. * PRECIPITATION TYPE...SNOW...SLEET AND FREEZING RAIN. * ACCUMULATIONS...AROUND 2 INCHES OF SNOW AND SLEET ACCUMULATION. LESS THAN ONE TENTH OF AN INCH OF ICE ACCUMULATION. * TIMING...A MIX OF SNOW...SLEET...AND FREEZING RAIN WILL GRADUALLY END THIS MORNING. * TEMPERATURES...UPPER 20S THIS MORNING. HIGHS THIS AFTERNOON IN THE UPPER 30S. * WINDS...LIGHT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$
826 WWUS41 KLWX 181007 WSWLWX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 507 AM EST TUE JAN 18 2011 VAZ025-026-503-504-WVZ501-505-506-181115- /O.CAN.KLWX.WW.Y.0005.000000T0000Z-110118T1400Z/ AUGUSTA-ROCKINGHAM-WESTERN HIGHLAND-EASTERN HIGHLAND- WESTERN GRANT-WESTERN PENDLETON-EASTERN PENDLETON- INCLUDING THE CITIES OF...STAUNTON...WAYNESBORO...HARRISONBURG... HIGHTOWN...MONTEREY...BAYARD...MOUNT STORM...CIRCLEVILLE... FRANKLIN 507 AM EST TUE JAN 18 2011 ...WINTER WEATHER ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN BALTIMORE MD/WASHINGTON HAS CANCELLED THE WINTER WEATHER ADVISORY. PRECIPITATION HAS ENDED ACROSS THE AREA. ROADWAYS MAY BE SLICK FROM THE OVERNIGHT WINTRY MIX AND MOTORISTS ARE URGED TO USE CAUTION WHEN TRAVELING THIS MORNING. $$ MDZ004>007-009>011-181700- /O.CON.KLWX.WS.W.0002.000000T0000Z-110118T1700Z/ FREDERICK MD-CARROLL-NORTHERN BALTIMORE-HARFORD-MONTGOMERY-HOWARD- SOUTHERN BALTIMORE- INCLUDING THE CITIES OF...FREDERICK...WESTMINSTER... GAITHERSBURG...COLUMBIA...BALTIMORE 507 AM EST TUE JAN 18 2011 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON EST TODAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON EST TODAY. * PRECIPITATION TYPE...FREEZING RAIN. * ACCUMULATIONS...AN ADDITIONAL FEW HUNDREDTHS OF AN INCH OF ICE ACCUMULATION THIS MORNING. TOTAL ICE ACCUMULATION OF TWO TO THREE TENTHS OF AN INCH. * TIMING...FREEZING RAIN WILL COME TO AN END LATER THIS MORNING...WITH TEMPERATURES RISING ABOVE FREEZING IN THE AFTERNOON. * TEMPERATURES...MID TO UPPER 20S THIS MORNING MORNING... RISING TO THE LOW 30S BY LATE MORNING. HIGHS THIS AFTERNOON IN THE UPPER 30S. * WINDS...NORTH AT 10 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW... SLEET...AND ICE ARE EXPECTED OR OCCURRING. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. && $$ MDZ017-018-VAZ057-181115- /O.CON.KLWX.ZR.Y.0001.000000T0000Z-110118T1100Z/ ST. MARYS-CALVERT-KING GEORGE- INCLUDING THE CITY OF...ST MARYS CITY 507 AM EST TUE JAN 18 2011 ...FREEZING RAIN ADVISORY REMAINS IN EFFECT UNTIL 6 AM EST EARLY THIS MORNING... A FREEZING RAIN ADVISORY REMAINS IN EFFECT UNTIL 6 AM EST EARLY THIS MORNING. * PRECIPITATION TYPE...FREEZING RAIN * ACCUMULATIONS...ADDITIONAL TRACE ACCUMULATION OF ICE. * TIMING...FREEZING RAIN WILL CONTINUE THROUGH THE EARLY MORNING HOURS...GRADUALLY CHANGING TO RAIN FROM SOUTH TO NORTH BY SUNRISE. * TEMPERATURES...LOWER 30S. * WINDS...NORTHEAST 10 TO 15 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZING RAIN ADVISORY MEANS THAT PERIODS OF FREEZING RAIN OR FREEZING DRIZZLE WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS. SLOW DOWN AND USE CAUTION WHILE DRIVING. && $$ VAZ036>039-050-056-181400- /O.CON.KLWX.WW.Y.0005.000000T0000Z-110118T1400Z/ NELSON-ALBEMARLE-GREENE-MADISON-ORANGE-SPOTSYLVANIA- INCLUDING THE CITIES OF...CHARLOTTESVILLE...FREDERICKSBURG 507 AM EST TUE JAN 18 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST THIS MORNING... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST THIS MORNING. * PRECIPITATION TYPE...FREEZING RAIN. * ACCUMULATIONS...ADDITIONAL FEW HUNDREDTHS OF AN INCH OF ICE ACCUMULATION. * TIMING...FREEZING RAIN AND FREEZING DRIZZLE WILL CONTINUE THROUGH EARLY MORNING BEFORE ENDING. * TEMPERATURES...NEAR 30 EARLY THIS MORNING...RISING ABOVE FREEZING BY MID MORNING HIGHS THIS AFTERNOON IN THE MID 40S. * WINDS...NORTH AT 5 TO 10 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ MDZ003-501-502-VAZ027>031-WVZ050>053-055-502>504-181700- /O.CON.KLWX.WW.Y.0005.000000T0000Z-110118T1700Z/ WASHINGTON-EXTREME WESTERN ALLEGANY-CENTRAL AND EASTERN ALLEGANY- SHENANDOAH-FREDERICK VA-PAGE-WARREN-CLARKE-HAMPSHIRE-MORGAN- BERKELEY-JEFFERSON-HARDY-EASTERN GRANT-WESTERN MINERAL- EASTERN MINERAL- INCLUDING THE CITIES OF...HAGERSTOWN...FROSTBURG...CUMBERLAND... WINCHESTER...FRONT ROYAL...MARTINSBURG...CHARLES TOWN... MOOREFIELD...PETERSBURG...ELK GARDEN...KEYSER...FORT ASHBY 507 AM EST TUE JAN 18 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON EST TODAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON EST TODAY. * PRECIPITATION TYPE...FREEZING RAIN. * ACCUMULATIONS...AN ADDITIONAL FEW HUNDREDTHS OF AN INCH OF ICE ACCUMULATION. * TIMING...FREEZING RAIN IS EXPECTED TO CONTINUE THROUGH MID MORNING BEFORE ENDING FROM SOUTH TO NORTH. * TEMPERATURES...MID TO UPPER 20S EARLY THIS MORNING...RISING TO NEAR FREEZING BY LATE MORNING. HIGHS THIS AFTERNOON IN THE UPPER 30S. * WINDS...NORTH AT 5 TO 10 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ DCZ001-MDZ013-014-016-VAZ040-051>055-501-502-181400- /O.CON.KLWX.WW.Y.0005.000000T0000Z-110118T1400Z/ DISTRICT OF COLUMBIA-PRINCE GEORGES-ANNE ARUNDEL-CHARLES- RAPPAHANNOCK-CULPEPER-PRINCE WILLIAM/MANASSAS/MANASSAS PARK- FAIRFAX-ARLINGTON/FALLS CHURCH/ALEXANDRIA-STAFFORD- NORTHERN FAUQUIER-SOUTHERN FAUQUIER- INCLUDING THE CITIES OF...WASHINGTON...ANNAPOLIS...WALDORF... CULPEPER...MANASSAS...MANASSAS PARK...FAIRFAX...ALEXANDRIA... FALLS CHURCH...WARRENTON 507 AM EST TUE JAN 18 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST THIS MORNING... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST THIS MORNING. * PRECIPITATION TYPE...FREEZING RAIN. * ACCUMULATIONS...ADDITIONAL ICE ACCUMULATION OF A FEW HUNDREDTHS OF AN INCH. * TIMING...FREEZING RAIN WILL CONTINUE EARLY THIS MORNING. PRECIPITATION WILL END BY MID MORNING. * TEMPERATURES...AROUND 30 EARLY THIS MORNING...RISING ABOVE FREEZING BY MID MORNING. * WINDS...NORTH AT 10 TO 15 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ VAZ042-181700- /O.CON.KLWX.WW.Y.0005.000000T0000Z-110118T1700Z/ LOUDOUN- INCLUDING THE CITY OF...LEESBURG 507 AM EST TUE JAN 18 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON EST TODAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON EST TODAY. * PRECIPITATION TYPE...FREEZING RAIN. * ACCUMULATIONS...ADDITIONAL ICE ACCUMULATION OF A FEW HUNDREDTHS OF AN INCH. * TIMING...FREEZING RAIN WILL END LATE THIS MORNING. * TEMPERATURES...UPPER 20S EARLY THIS MORNING. HIGHS THIS AFTERNOON IN THE UPPER 30S. * WINDS...NORTH AT 10 TO 15 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$
462 WWUS41 KLWX 181110 WSWLWX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 610 AM EST TUE JAN 18 2011 MDZ017-018-VAZ057-181215- /O.CAN.KLWX.ZR.Y.0001.000000T0000Z-110118T1100Z/ ST. MARYS-CALVERT-KING GEORGE- INCLUDING THE CITY OF...ST MARYS CITY 610 AM EST TUE JAN 18 2011 ...FREEZING RAIN ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN BALTIMORE MD/WASHINGTON HAS CANCELLED THE FREEZING RAIN ADVISORY. TEMPERATURES ACROSS THE REGION HAVE RISEN TO OR JUST ABOVE FREEZING. IN ADDITION...RAIN HAS ENDED. HOWEVER...THERE STILL MAY BE A FEW PATCHES OF ICE...PARTICULARLY ON UNTREATED SURFACES OR ON LESSER TRAVELED ROADS. MOTORISTS ARE URGED TO USE CAUTION WHILE TRAVELING THIS MORNING. $$ MDZ501-502-VAZ027>031-WVZ050-055-502>504-181215- /O.CAN.KLWX.WW.Y.0005.000000T0000Z-110118T1700Z/ EXTREME WESTERN ALLEGANY-CENTRAL AND EASTERN ALLEGANY-SHENANDOAH- FREDERICK VA-PAGE-WARREN-CLARKE-HAMPSHIRE-HARDY-EASTERN GRANT- WESTERN MINERAL-EASTERN MINERAL- INCLUDING THE CITIES OF...FROSTBURG...CUMBERLAND...WINCHESTER... FRONT ROYAL...MOOREFIELD...PETERSBURG...ELK GARDEN...KEYSER... FORT ASHBY 610 AM EST TUE JAN 18 2011 ...WINTER WEATHER ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN BALTIMORE MD/WASHINGTON HAS CANCELLED THE WINTER WEATHER ADVISORY. PRECIPITATION HAS ENDED ACROSS THE AREA. HOWEVER...ROADWAYS MAY STILL BE SLICK FROM THE OVERNIGHT WINTRY MIX...ESPECIALLY ANY UNTREATED SURFACE OR LESSER TRAVELED BACK ROADS. THEREFORE...MOTORISTS ARE URGED TO USE CAUTION WHEN TRAVELING THIS MORNING. $$ VAZ036>040-050-051-056-181215- /O.CAN.KLWX.WW.Y.0005.000000T0000Z-110118T1400Z/ NELSON-ALBEMARLE-GREENE-MADISON-RAPPAHANNOCK-ORANGE-CULPEPER- SPOTSYLVANIA- INCLUDING THE CITIES OF...CHARLOTTESVILLE...WASHINGTON... CULPEPER...FREDERICKSBURG 610 AM EST TUE JAN 18 2011 ...WINTER WEATHER ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN BALTIMORE MD/WASHINGTON HAS CANCELLED THE WINTER WEATHER ADVISORY. PRECIPITATION HAS ENDED ACROSS THE AREA. HOWEVER...ROADWAYS MAY STILL BE SLICK FROM THE OVERNIGHT WINTRY MIX...ESPECIALLY ANY UNTREATED SURFACE OR LESSER TRAVELED BACK ROADS. THEREFORE...MOTORISTS ARE URGED TO USE CAUTION WHEN TRAVELING THIS MORNING. $$ MDZ004>007-009>011-181700- /O.CON.KLWX.WS.W.0002.000000T0000Z-110118T1700Z/ FREDERICK MD-CARROLL-NORTHERN BALTIMORE-HARFORD-MONTGOMERY-HOWARD- SOUTHERN BALTIMORE- INCLUDING THE CITIES OF...FREDERICK...WESTMINSTER... GAITHERSBURG...COLUMBIA...BALTIMORE 610 AM EST TUE JAN 18 2011 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON EST TODAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON EST TODAY. * PRECIPITATION TYPE...FREEZING RAIN. * ACCUMULATIONS...AN ADDITIONAL FEW HUNDREDTHS OF AN INCH OF ICE ACCUMULATION THIS MORNING. TOTAL ICE ACCUMULATION UP TO A QUARTER OF AN INCH. * TIMING...FREEZING RAIN HAS BECOME LIGHT AND INTERMITTENT...AND WILL END BETWEEN 9AM AND NOON. * TEMPERATURES...MID TO UPPER 20S... RISING TO THE LOWER 30S BY LATE MORNING. HIGHS THIS AFTERNOON IN THE UPPER 30S. * WINDS...NORTH AT 10 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW... SLEET...AND ICE ARE EXPECTED OR OCCURRING. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. && $$ MDZ003-WVZ051>053-181700- /O.CON.KLWX.WW.Y.0005.000000T0000Z-110118T1700Z/ WASHINGTON-MORGAN-BERKELEY-JEFFERSON- INCLUDING THE CITIES OF...HAGERSTOWN...MARTINSBURG...CHARLES TOWN 610 AM EST TUE JAN 18 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON EST TODAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON EST TODAY. * PRECIPITATION TYPE...FREEZING RAIN. * ACCUMULATIONS...AN ADDITIONAL FEW HUNDREDTHS OF AN INCH OF ICE ACCUMULATION. * TIMING...FREEZING RAIN HAS BECOME LIGHT AND INTERMITTENT...AND WILL END BY MID MORNING. * TEMPERATURES...MID TO UPPER 20S...RISING TO NEAR FREEZING BY NOON. HIGHS THIS AFTERNOON IN THE UPPER 30S. * WINDS...NORTH AT 5 TO 10 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ DCZ001-MDZ013-014-016-VAZ052>055-501-502-181400- /O.CON.KLWX.WW.Y.0005.000000T0000Z-110118T1400Z/ DISTRICT OF COLUMBIA-PRINCE GEORGES-ANNE ARUNDEL-CHARLES- PRINCE WILLIAM/MANASSAS/MANASSAS PARK-FAIRFAX- ARLINGTON/FALLS CHURCH/ALEXANDRIA-STAFFORD-NORTHERN FAUQUIER- SOUTHERN FAUQUIER- INCLUDING THE CITIES OF...WASHINGTON...ANNAPOLIS...WALDORF... MANASSAS...MANASSAS PARK...FAIRFAX...ALEXANDRIA...FALLS CHURCH... WARRENTON 610 AM EST TUE JAN 18 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST THIS MORNING... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST THIS MORNING. * PRECIPITATION TYPE...FREEZING RAIN. * ACCUMULATIONS...ADDITIONAL ICE ACCUMULATION OF A FEW HUNDREDTHS OF AN INCH. * TIMING...FREEZING RAIN HAS BECOME LIGHT AND INTERMITTENT...AND WILL END BETWEEN 7 AND 9AM. * TEMPERATURES...AROUND 30...RISING ABOVE FREEZING BY MID MORNING. * WINDS...NORTH AT 10 TO 15 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ VAZ042-181700- /O.CON.KLWX.WW.Y.0005.000000T0000Z-110118T1700Z/ LOUDOUN- INCLUDING THE CITY OF...LEESBURG 610 AM EST TUE JAN 18 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON EST TODAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON EST TODAY. * PRECIPITATION TYPE...FREEZING RAIN. * ACCUMULATIONS...ADDITIONAL ICE ACCUMULATION OF A FEW HUNDREDTHS OF AN INCH. * TIMING...FREEZING RAIN HAS BECOME LIGHT AND INTERMITTENT...AND WILL END BETWEEN 7 AND 9AM. * TEMPERATURES...UPPER 20S...RISING ABOVE FREEZING AROUND 8 OR 9AM. HIGHS THIS AFTERNOON IN THE UPPER 30S. * WINDS...NORTH AT 10 TO 15 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ HTS
680 WWUS41 KLWX 181342 WSWLWX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 842 AM EST TUE JAN 18 2011 MDZ004>007-009>011-181700- /O.CAN.KLWX.WS.W.0002.000000T0000Z-110118T1700Z/ /O.EXA.KLWX.WW.Y.0005.000000T0000Z-110118T1700Z/ FREDERICK MD-CARROLL-NORTHERN BALTIMORE-HARFORD-MONTGOMERY-HOWARD- SOUTHERN BALTIMORE- INCLUDING THE CITIES OF...FREDERICK...WESTMINSTER... GAITHERSBURG...COLUMBIA...BALTIMORE 842 AM EST TUE JAN 18 2011 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL NOON EST TODAY... ...WINTER STORM WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN BALTIMORE MD/WASHINGTON HAS ISSUED A WINTER WEATHER ADVISORY FOR FREEZING RAIN AND FREEZING DRIZZLE... WHICH IS IN EFFECT UNTIL NOON EST TODAY. THE WINTER STORM WARNING HAS BEEN CANCELLED. * PRECIPITATION TYPE...FREEZING RAIN AND FREEZING DRIZZLE. * ACCUMULATIONS...AN ADDITIONAL COUPLE HUNDREDTHS OF AN INCH OF ICE ACCUMULATION. * TIMING...EXPECT FREEZING RAIN AND DRIZZLE TO CONTINUE THROUGH LATE THIS MORNING. * TEMPERATURES...MID TO UPPER 20S...RISING TO NEAR FREEZING BY NOON. HIGHS THIS AFTERNOON IN THE MID TO UPPER 30S. * WINDS...NORTH AT 5 TO 10 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF FREEZING RAIN OR FREEZING DRIZZLE WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ DCZ001-MDZ013-014-016-VAZ052>055-501-502-181445- /O.CAN.KLWX.WW.Y.0005.000000T0000Z-110118T1400Z/ DISTRICT OF COLUMBIA-PRINCE GEORGES-ANNE ARUNDEL-CHARLES- PRINCE WILLIAM/MANASSAS/MANASSAS PARK-FAIRFAX- ARLINGTON/FALLS CHURCH/ALEXANDRIA-STAFFORD-NORTHERN FAUQUIER- SOUTHERN FAUQUIER- INCLUDING THE CITIES OF...WASHINGTON...ANNAPOLIS...WALDORF... MANASSAS...MANASSAS PARK...FAIRFAX...ALEXANDRIA...FALLS CHURCH... WARRENTON 842 AM EST TUE JAN 18 2011 ...WINTER WEATHER ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN BALTIMORE MD/WASHINGTON HAS CANCELLED THE WINTER WEATHER ADVISORY. FREEZING DRIZZLE HAS TAPERED OFF ACROSS THE AREA. BUT WITH TEMPERATURES IN THE LOWER 30S THROUGH MID MORNING...CONTINUE TO BE CAUTIOUS OF SLICK SPOTS ESPECIALLY ON ANY UNTREATED SECONDARY ROADS...SIDEWALKS AND PARKING LOTS. $$ MDZ003-WVZ051>053-181700- /O.CON.KLWX.WW.Y.0005.000000T0000Z-110118T1700Z/ WASHINGTON-MORGAN-BERKELEY-JEFFERSON- INCLUDING THE CITIES OF...HAGERSTOWN...MARTINSBURG...CHARLES TOWN 842 AM EST TUE JAN 18 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON EST TODAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON EST TODAY. * PRECIPITATION TYPE...FREEZING RAIN AND FREEZING DRIZZLE. * ACCUMULATIONS...AN ADDITIONAL COUPLE HUNDREDTHS OF AN INCH OF ICE ACCUMULATION. * TIMING...FREEZING RAIN AND FREEZING DRIZZLE WILL TAPER OFF DURING THE MID MORNING. * TEMPERATURES...MID TO UPPER 20S...RISING TO NEAR FREEZING BY NOON. HIGHS THIS AFTERNOON IN THE MID TO UPPER 30S. * WINDS...NORTH AT 5 TO 10 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF FREEZING RAIN OR FREEZING DRIZZLE WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ VAZ042-181700- /O.CON.KLWX.WW.Y.0005.000000T0000Z-110118T1700Z/ LOUDOUN- INCLUDING THE CITY OF...LEESBURG 842 AM EST TUE JAN 18 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON EST TODAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON EST TODAY. * PRECIPITATION TYPE...FREEZING RAIN AND FREEZING DRIZZLE. * ACCUMULATIONS...AN ADDITIONAL ICE ACCUMULATION OF A COUPLE HUNDREDTHS OF AN INCH. * TIMING...FREEZING RAIN AND FREEZING DRIZZLE WILL TAPER OFF DURING THE MID MORNING. * TEMPERATURES...UPPER 20S...RISING ABOVE FREEZING AROUND NOON. HIGHS THIS AFTERNOON IN THE MID TO UPPER 30S. * WINDS...NORTH AT 10 TO 15 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF FREEZING RAIN OR FREEZING DRIZZLE WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$
What forecasters said that day
The local office's own words before this winter storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Baltimore/Washington wrote its last area forecast discussion before this winter storm warning went out at Jan 17, 9:48 PM EST, 49 minutes earlier.
Area forecast discussion, Jan 17, 9:48 PM EST, 49 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
948 PM EST MON JAN 17 2011
.SYNOPSIS...
HIGH PRESSURE WILL BE LOCATED TO THE NORTHEAST OF THE AREA
TONIGHT...AS LOW PRESSURE APPROACHES FROM THE SOUTH. LOW PRESSURE
WILL MOVE UP THE MID ATLANTIC COAST ON TUESDAY THEN TOWARD NEW
ENGLAND TUESDAY NIGHT. HIGH PRESSURE WILL BUILD IN BEHIND THIS
SYSTEM FOR WEDNESDAY...BUT ANOTHER SYSTEM MAY AFFECT THE REGION
THURSDAY NIGHT INTO FRIDAY.
&&
.NEAR TERM /THROUGH TUESDAY/...
PRECIPITATION HAS BEGUN TO OVERSPREAD THE ENTIRE AREA FROM THE
SOUTH THIS EVE AS LOPRES QUICKLY ORGANIZES ALONG THE SOUTHEAST
COAST. AS EXPECTED...A SOLID SHIELD OF PRECIP HAS QUICKLY FILLED
IN ACROSS THE MID-ATLANTIC STATES...ESPECIALLY CLOSER TOWARD THE
COAST. WITH ENOUGH COLD AIR IN PLACE AT THE SFC /SUPPLIED BY
HIPRES ALONG THE NEW ENGLAND COAST/ AND WARMER AIR A FEW KFT ABOVE
THE GROUND THAT IS QUICKLY MOVING IN FROM SE TO NW... THE AREA
WILL DEAL WITH A WINTRY MESS THRU THE REST OF TNGT...AND INTO THE
AM COMMUTE FOR MANY AREAS ALONG AND WEST OF I-95.
A FREEZING RAIN ADVISORY HAS BEEN ISSUED FOR LOWER SRN MD AND
KING GEORGE COUNTY AS SOME MESONET OBS SHOW TEMPS IN THE UPPER 20S
AND LOW 30S AT THE ONSET OF PRECIP. THE FZRA SHOULD CHANGE TO ALL
RAIN IN THESE AREAS BY MIDNIGHT AS TEMPS RISE ABOVE FREEZING.
ELSEWHERE...WINTER WX ADVISORY IS IN EFFECT THRU THE MID MRNG FOR
AREAS APPROXIMATELY SOUTH OF I-66 AND THRU NOON FOR AREAS TO THE
NORTH. WINTER WX ADVISORY WILL LIKELY BE CANCELLED BEFORE THE
EXPIRATION TIMES INDICATE ACROSS MANY AREAS ONCE FZRA TRANSITIONS TO
RAIN FROM SE TO NW LATE TNGT INTO TUE MRNG.
00Z RAOB SOUNDING AT KIAD SHOWS A THERMAL PROFILE SUPPORTIVE OF ALL
SNOW...AND IS SLIGHT COLDER/DRIER THAN MODELS HAD FCSTD AS PRECIP
HAD YET TO MOVE INTO THE AREA AT RELEASE. DESPITE THE SLIGHT
DIFFERENCES...FCST STILL LOOKS ON TRACK AS ENOUGH WARM AIR HAS
ALREADY CHANGED PRECIP OVER TO A WINTRY MIX ALONG I-95 INCLUDING
DC. INTRUSION OF MARINE AIR WAS STRONG ENOUGH TO WARM THE
ATMOSPHERE ABOVE 0C ALL THE WAY UP TO H8 AT KWAL. FIRST FEW HRS OF
PRECIP TO THE N AND W OF I-95 WILL BE SNOW WITH ACCUMULATIONS UP
TO AN INCH...BEFORE THE CHANGEOVER TO FZRA OCCURS. PREDOMINANT
PRECIP TYPE FROM I-95 SOUTH AND EAST WILL BE FZRA THIS EVE BEFORE
THE TRANSITION TO RA OCCURS LATE TNGT/ERY TUE MRNG.
THERE WILL BE A TIGHT PRECIP GRADIENT...WITH HIGHER AMOUNTS
CLOSER TO THE COAST AND MUCH LIGHTER AMOUNTS WEST OF THE BLUE
RIDGE. THE HIGHEST ICE ACCUMULATIONS /UP TO TWO TENTHS OF AN INCH/...
AND WORST CONDITIONS WILL LIKELY BE ON THE WRN FRINGE OF THE
HEAVIER PRECIP...WHERE SUB-FREEZING SFC TEMPS WILL LIKELY LINGER THRU
THE AM RUSH HR COMMUTE. GEOGRAPHICALLY...THIS AREA WILL LIKELY
RESIDE ACROSS THE NW SUBURBS OF DC AND BALTIMORE...ESPECIALLY
ACROSS CENTRAL MD AND EXTREME NW VA. FROM I-95 SOUTH AND EAST
/INCLUDING DC AND BALTIMORE/...ICE ACCUMULATIONS UNDER ONE TENTH
OF AN INCH ARE EXPECTED THRU THE ERY MRNG.
RAIN WILL TAPER OFF FROM THE SOUTHWEST TO NORTHEAST LATE TUESDAY
MORNING INTO TUESDAY AFTERNOON...SO MOST PLACES BY THE AFTERNOON
MAY BE DRY BUT IT LOOKS AS IF CLOUDS WILL HANG TOUGH. THE NEXT
WAVE WILL APPROACH ON TUESDAY EVENING. TEMPERATURES WILL WARM
ABOVE FREEZING FOR HIGH TEMPERATURES ACROSS THE ENTIRE CWA
TUESDAY...LIKELY REACHING 40 ACROSS THE SOUTHERN PORTION OF THE
CWA.
&&
.SHORT TERM /TUESDAY NIGHT THROUGH WEDNESDAY/...
BEHIND THE EXITING COASTAL LOW PRESSURE SYSTEM WILL BE ANOTHER
FEATURE. THIS FEATURE IS A CONTINENTAL UPPER SHORTWAVE...MAINLY A
LARGE AREA OF LIGHT PRECIP STREWN ACROSS LENGTH OF THE EAST COAST
STATES FROM THE GREAT LAKES TO THE GULF COAST. THE STRONGER PORTION
OF THIS FEATURE WILL BE LOCATED CLOSER TO THE UPPER VORT MAX SLIDING
EWD OVER THE TENN VLY/SRN APLCNS INTO EARLY WED. THE VORT MAX WILL
SWING OVER THE SOUTHEAST STATES OVERNIGHT AND OFF THE SRN ATLC COAST
BY LATE WED MORNING. BEFORE THE VORT SLIDES OFFSHORE...A
REGIONAL-SCALE AREA OF SCATTERED LIGHT PRECIP IS EXPECTED TO DEVELOP
AND PUSH EAST OF THE CNTRL/SRN APLCNS. LOW LEVEL THICKNESSES WILL
SUPPORT A PERIOD OF WINTRY MIX ACROSS MUCH OF THE AREA GOING INTO
THE OVERNIGHT...BUT OVERALL PRECIP WILL BE LIGHT AND INTERMITTENT.
&&
.LONG TERM /WEDNESDAY NIGHT THROUGH MONDAY/...
A QUICK EXIT TO THIS ENTIRE SYSTEM AND A RELATIVELY QUICK ENTRANCE
FOR THE NEXT ONE. ONLY A ONE-DAY HIGH PRESSURE TRANSITION DAY BEFORE
THE NEXT UPPER WAVE SETS UP AND BEGINS ITS APPROACH ON THE EAST
COAST. THIS LATE WEEK STORM SYSTEM LOOKS TO BE ANOTHER ELONGATED
BUT SHARPER UPPER TROF AXIS. THIS TYPE OF UPPER WAVE WILL PULL IN A
BIT MORE MOISTURE ACROSS THE EAST COAST THAN THE WED SYSTEM...BUT
NOT FULLY DEVELOP UNTIL JUST OFF THE ATLC COAST. THE WEAK SFC LOW
WILL MAKE A SEWD TREK FROM THE ERN GREAT LAKES REGION...MEETING UP
W/ A WEAK LEE LOW OFF THE CNTRL APLCNS - STRENGTHENING OFF THE SRN
COAST OF LONG ISLAND EARLY FRI MORNING. PASSAGE OF ANY ASSOCIATED
PRECIP /AS WITH THE WED SYSTEM/ WILL BE MAINLY OVERNIGHT THU INTO
EARLY FRI. LOW LEVEL THICKNESSES SUPPORT WINTRY PRECIP FURTHER SOUTH
THAN THE MID-WEEK UPPER WAVE...CHANCES FOR SNOW A BIT BETTER ACROSS
THE AREA...BUT AGAIN ONLY LIGHT QPF EXPECTED AND OF A SCATTERED AND
INTERMITTENT NATURE.
THE PATTERN CHANGES LITTLE AFTER THIS UPPER WAVE MOVES OFF THE COAST
AND LONG RANGE GUIDANCE LOOKS LIKE A REPEAT INTO EARLY NEXT WEEK.
&&
.AVIATION /01Z TUESDAY THROUGH SATURDAY/...
PRECIP WILL CONTINUE TO OVERSPREAD THE AREA FROM THE NORTH THIS
EVE. PRECIP HAS ALREADY CHANGED TO A WINTRY MIX AT DCA/BWI/CHO AND
IS COLD ENOUGH FOR ALL SN ACROSS IAD/MRB/MTN. AS WARMER AIR CONTINUES
TO MOVE INTO THE AREA TNGT...PRECIP WILL TRANSITION TO FZRA
BETWEEN 03Z-06Z ACROSS MOST TERMINALS. MRB MAY HOLD ON TO A SN/PL
MIX UNTIL FZRA BETWEEN 07Z-10Z. CIGS/VSBYS WILL CONTINUE TO LOWER
TO IFR LVLS DURING THE LATE EVE AS HEAVIER/STEADIER PRECIP MOVES
IN FROM THE SOUTH. SFC TEMPS WILL WARM ABOVE FREEZING...ALLOWING
FZRA TO CHANGE TO RA FROM SE TO NW DURING THE ERY MRNG TUE...
POSSIBLY NOT UNTIL THE MID MRNG AT IAD/MRB.
EXPECT VSBYS TO IMPROVE AS RAIN ENDS TUESDAY MRNG...BUT HAVE THE
CONCERN THAT CIGS STAY IFR THROUGH THE ENTIRE DAY.
AFTER THE COASTAL MOVES AWAY FROM THE REGION LATE TUE...ANOTHER
UPPER WAVE WILL MOVE IN FROM BEHIND W/ ONLY LIGHT PRECIP INVOLVED
DURING ITS PASSAGE. AS CLOUDS/PRECIP EXIT EARLY WED...WINDS WILL
QUICKLY PICK-UP FROM THE WEST DURING THE DAYTIME HRS. BREEZY SFC
WINDS WILL BE IN PLACE FOR MUCH OF THE DAY...SUBSIDING INTO THE
OVERNIGHT HRS. HIGH PRESSURE MAKES A BRIEF APPEARANCE FOR THU...BUT
ANOTHER UPPER WAVE MOVES THRU OVERNIGHT THU AND INTO EARLY
FRI...MORE LIGHT WINTRY PRECIP POSSIBLE THEN THIS SYSTEM SLIDE OFF
THE COAST BY MIDDAY FRI.
&&
.MARINE...
NORTHEAST FLOW NEAR THE SURFACE IS EXPECTED TO STRENGTHEN OVER THE
BAY THIS THRU THE REST OF TNGT. SMALL CRAFT ADVISORY WILL REMAIN
IN EFFECT AND LIKELY LAST UNTIL TUESDAY MORNING. MODELS THEN SHOW
A RELATIVE LULL/DECREASE IN WINDS TUESDAY AFTERNOON AS LOW
PRESSURE PASSES THE MID ATLANTIC COAST.
WINDS WILL GRADUALLY TAPER OFF INTO EARLY WED...AS A COASTAL LOW
QUICKLY MOVES UP TOWARD NEW ENGLAND. AFTER SUNRISE THOUGH...WINDS
WILL INCREASE OUT OF THE WEST...BREEZY THROUGHOUT THE DAYTIME HRS
AND STAYING IN THE LOWER-END SCA RANGE WELL INTO THE OVERNIGHT HRS
AS WINDS TURN NLY. HIGH PRESSURE WILL BRIEFLY QUIET DOWN CONDITIONS
INTO FRI...JUST AHEAD OF ANOTHER UPPER WAVE SLIDING ACROSS THE
REGION.
&&
.LWX WATCHES/WARNINGS/ADVISORIES...
DC...WINTER WEATHER ADVISORY UNTIL 9 AM EST TUESDAY FOR DCZ001.
MD...WINTER WEATHER ADVISORY UNTIL NOON EST TUESDAY FOR MDZ003>007-
009>011-501-502.
WINTER WEATHER ADVISORY UNTIL 9 AM EST TUESDAY FOR MDZ013-014-
016.
FREEZING RAIN ADVISORY UNTIL MIDNIGHT EST TONIGHT FOR MDZ017-
018.
VA...WINTER WEATHER ADVISORY UNTIL NOON EST TUESDAY FOR VAZ027>031-
042.
WINTER WEATHER ADVISORY UNTIL 9 AM EST TUESDAY FOR VAZ025-026-
036>040-050>056-501>504.
FREEZING RAIN ADVISORY UNTIL MIDNIGHT EST TONIGHT FOR VAZ057.
WV...WINTER WEATHER ADVISORY UNTIL NOON EST TUESDAY FOR WVZ050>053-
055-502>504.
WINTER WEATHER ADVISORY UNTIL 9 AM EST TUESDAY FOR WVZ501-505-
506.
MARINE...SMALL CRAFT ADVISORY FROM 3 AM TO 11 AM EST TUESDAY FOR
ANZ530>533-538>542.
SMALL CRAFT ADVISORY UNTIL 11 AM EST TUESDAY FOR ANZ534-537-
543.
&&
UPDATE...KLEIN
PREV DISC...BPP/GMSHazardous weather outlook, Jan 17, 7:42 PM EST, 2 hours 55 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 742 PM EST MON JAN 17 2011 ANZ530>543-DCZ001-MDZ006-007-011-013-014-016>018-VAZ052>057- 180945- 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- 742 PM EST MON JAN 17 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 WINTER WEATHER ADVISORY BEGINS THIS EVENING FOR THE OUTLOOK AREA. THE PRIMARY CONCERN IS FOR ICE ACCUMULATIONS DUE TO FREEZING RAIN. PLEASE REFER TO THE WINTER WEATHER MESSAGE WBCWSWLWX FOR FURTHER DETAILS. A FREEZING RAIN ADVISORY HAS BEEN ISSUED FOR KING GEORGE COUNTY VIRGINIA AND LOWER SOUTHERN MARYLAND THROUGH MIDNIGHT. A SMALL CRAFT ADVISORY IS IN EFFECT FOR PORTIONS OF THE TIDAL POTOMAC RIVER AND MARYLAND CHESAPEAKE BAY TONIGHT. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY A WINTER WEATHER ADVISORY CONTINUES INTO TUESDAY MORNING FOR MUCH OF THE OUTLOOK AREA. PLEASE REFER TO THE WINTER WEATHER MESSAGE WBCWSWLWX FOR FURTHER DETAILS. A SMALL CRAFT ADVISORY IS IN EFFECT FOR PORTIONS OF THE TIDAL POTOMAC RIVER AND MARYLAND CHESAPEAKE BAY TUESDAY MORNING. A SMALL CRAFT ADVISORY MAY BE NEEDED WEDNESDAY FOR PORTIONS OF THE WATERS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. REPORTS OF SNOW AND ICE ACCUMULATIONS ARE APPRECIATED. MDZ003>005-009-010-501-502-VAZ025>031-036>040-042-050-051-501>504- WVZ050>053-055-501>506-180945- 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- 742 PM EST MON JAN 17 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 A WINTER WEATHER ADVISORY IS IN EFFECT ACROSS THE OUTLOOK AREA. THE PRIMARY CONCERN IS FOR ICE ACCUMULATIONS DUE TO FREEZING RAIN. PLEASE REFER TO THE WINTER WEATHER MESSAGE WBCWSWLWX FOR FURTHER DETAILS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY A WINTER WEATHER ADVISORY CONTINUES INTO TUESDAY MORNING. PLEASE REFER TO THE WINTER WEATHER MESSAGE WBCWSWLWX FOR FURTHER DETAILS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME. REPORTS OF SNOW AND ICE ACCUMULATIONS ARE APPRECIATED.
The office that day
Everything else NWS Baltimore/Washington issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 17, 7:56 PM EST | Freezing Rain Advisory | LWX | Calvert, Saint Mary's | 10 hr |
Nearby
Winter Storm Warnings in Maryland, 2011Every winter storm warning in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.