Alert archive / Virginia / Red Flag Warnings in 2021
Red Flag Warning 2, NWS Baltimore/Washington
NWS Baltimore/Washington issued this red flag warning at Mar 14, 2021, 4:01 AM EDT for 16 counties in Virginia; 15 counties in Maryland; 7 counties in West Virginia. It took effect at Mar 14, 2021, 8:00 AM EDT. It was in force for 14 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
- Mar 14, 2021, 4:01 AM EDT (08:01 UTC)
- In effect from
- Mar 14, 2021, 8:00 AM EDT
- Expired
- Mar 14, 2021, 10:00 PM EDT
- In force
- 14 hr
- Issued by
- NWS Baltimore/Washington
All 38 counties
Allegany County, MD, Anne Arundel County, MD, Baltimore County, MD, Calvert County, MD, Carroll County, MD, Cecil County, MD, Charles County, MD, City of Baltimore, MD, Frederick County, MD, Harford County, MD, Howard County, MD, Montgomery County, MD, Prince George's County, MD, Saint Mary's County, MD, Washington County, MD, Arlington County, VA, City of Alexandria, VA, City of Falls Church, VA, City of Winchester, VA, Clarke County, VA, Fairfax County, VA, Fauquier County, VA, Frederick County, VA, Greene County, VA, Loudoun County, VA, Madison County, VA, Page County, VA, Rappahannock County, VA, Rockingham County, VA, Shenandoah County, VA, Warren County, VA, Berkeley County, WV, Grant County, WV, Hampshire County, WV, Hardy County, WV, Jefferson County, WV, Mineral County, WV, Morgan County, WV
The radar
The Sterling radar (KLWX), 17 km from the middle of the area, began a volume at 07:59 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, 8.0 hours before the alert went out and 25 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
- 3125 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 78 m²/s²
- 0-3 km storm-relative helicity
- 230 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
852 WWUS81 KLWX 140801 RFWLWX URGENT - FIRE WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 401 AM EDT Sun Mar 14 2021 VAZ503-504-WVZ505-506-140915- /O.CAN.KLWX.FW.A.0002.210314T1200Z-210315T0200Z/ Western Highland-Eastern Highland-Western Pendleton- Eastern Pendleton- 401 AM EDT Sun Mar 14 2021 ...FIRE WEATHER WATCH IS CANCELLED FOR HIGHLAND COUNTY IN VIRGINIA AND PENDLETON COUNTY IN WEST VIRGINIA... The National Weather Service in Baltimore MD/Washington has cancelled the Fire Weather Watch. Widespread critical fire weather conditions are unlikely today. However, relative humidity values will be low with wind gusts above 25 mph and dry fuels, so the fire danger threat will still be elevated today. $$ DCZ001-MDZ003>006-008-011-013-014-501>508-VAZ028-031-053-054- 505>507-WVZ050>053-055-501>504-142215- /O.UPG.KLWX.FW.A.0002.210314T1200Z-210315T0200Z/ /O.NEW.KLWX.FW.W.0002.210314T1200Z-210315T0200Z/ District of Columbia-Washington-Frederick MD-Carroll- Northern Baltimore-Cecil-Southern Baltimore-Prince Georges- Anne Arundel-Extreme Western Allegany- Central and Eastern Allegany-Northwest Montgomery- Central and Southeast Montgomery-Northwest Howard- Central and Southeast Howard-Northwest Harford-Southeast Harford- Frederick VA-Clarke-Fairfax-Arlington/Falls Church/Alexandria- Western Loudoun-Eastern Loudoun-Northern Virginia Blue Ridge- Hampshire-Morgan-Berkeley-Jefferson-Hardy-Western Grant- Eastern Grant-Western Mineral-Eastern Mineral- 401 AM EDT Sun Mar 14 2021 ...RED FLAG WARNING IN EFFECT FROM 8 AM THIS MORNING TO 10 PM EDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR PORTIONS OF NORTHERN VIRGINIA...MUCH OF MARYLAND...EASTERN WEST VIRGINIA...AND THE DISTRICT OF COLUMBIA... The National Weather Service in Baltimore MD/Washington has issued a Red Flag Warning for gusty winds and low humidity, which is in effect from 8 AM this morning to 10 PM EDT this evening. The Fire Weather Watch is no longer in effect. * WINDS...Northwest 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...15 to 25 percent. * IMPACTS...Critical fire weather conditions are expected to develop today. All outdoor burning is discouraged, as fires could rapidly spread and become uncontrollable. * FUEL MOISTURE...3 to 6 percent for fine fuels. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. Be careful of heat and sparks while operating any equipment, and avoid smoking in wildland areas. && $$ MDZ016>018-VAZ027-030-052-501-142215- /O.NEW.KLWX.FW.W.0002.210314T1200Z-210315T0200Z/ Charles-St. Marys-Calvert-Shenandoah-Warren- Prince William/Manassas/Manassas Park-Northern Fauquier- 401 AM EDT Sun Mar 14 2021 ...RED FLAG WARNING IN EFFECT FROM 8 AM THIS MORNING TO 10 PM EDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR PORTIONS OF NORTHERN VIRGINIA AND SOUTHERN MARYLAND... The National Weather Service in Baltimore MD/Washington has issued a Red Flag Warning for gusty winds and low humidity, which is in effect from 8 AM this morning to 10 PM EDT this evening. * WINDS...Northwest 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...15 to 25 percent. * IMPACTS...Critical fire weather conditions are expected to develop today. All outdoor burning is discouraged, as fires could rapidly spread and become uncontrollable. * FUEL MOISTURE...3 to 6 percent for fine fuels. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. Be careful of heat and sparks while operating any equipment, and avoid smoking in wildland areas. && $$
3 follow-up statements
279 WWUS81 KLWX 141940 RFWLWX URGENT - FIRE WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 340 PM EDT Sun Mar 14 2021 DCZ001-MDZ003>006-008-011-013-014-016>018-501>508-VAZ027-028-030- 031-052>054-501-505>507-WVZ050>053-055-501>504-150200- /O.CON.KLWX.FW.W.0002.000000T0000Z-210315T0200Z/ District of Columbia-Washington-Frederick MD-Carroll- Northern Baltimore-Cecil-Southern Baltimore-Prince Georges- Anne Arundel-Charles-St. Marys-Calvert-Extreme Western Allegany- Central and Eastern Allegany-Northwest Montgomery- Central and Southeast Montgomery-Northwest Howard- Central and Southeast Howard-Northwest Harford-Southeast Harford- Shenandoah-Frederick VA-Warren-Clarke- Prince William/Manassas/Manassas Park-Fairfax- Arlington/Falls Church/Alexandria-Northern Fauquier- Western Loudoun-Eastern Loudoun-Northern Virginia Blue Ridge- Hampshire-Morgan-Berkeley-Jefferson-Hardy-Western Grant- Eastern Grant-Western Mineral-Eastern Mineral- 340 PM EDT Sun Mar 14 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM EDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR PORTIONS OF NORTHERN VIRGINIA...MUCH OF MARYLAND...EASTERN WEST VIRGINIA...AND THE DISTRICT OF COLUMBIA... * WINDS...Northwest 15 to 25 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 16 percent. * IMPACTS...Critical fire weather conditions are expected to develop today. All outdoor burning is discouraged, as fires could rapidly spread and become uncontrollable. * FUEL MOISTURE...3 to 6 percent for fine fuels. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. Be careful of heat and sparks while operating any equipment, and avoid smoking in wildland areas. && $$
782 WWUS81 KLWX 142032 RFWLWX URGENT - FIRE WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 432 PM EDT Sun Mar 14 2021 VAZ029-150200- /O.EXA.KLWX.FW.W.0002.000000T0000Z-210315T0200Z/ Page- 432 PM EDT Sun Mar 14 2021 ...RED FLAG WARNING IN EFFECT UNTIL 10 PM EDT THIS EVENING FOR LOW HUMIDITY AND STRONG WINDS FOR PAGE COUNTY.. The National Weather Service in Baltimore MD/Washington has issued a Red Flag Warning for low humidity and strong winds, which is in effect until 10 PM EDT this evening. * WINDS...Northwest 15 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 23 percent. * IMPACTS...Critical fire weather conditions are expected to develop today. All outdoor burning is discouraged, as fires could rapidly spread and become uncontrollable. * FUEL MOISTURE...3 to 6 percent for fine fuels. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$ DCZ001-MDZ003>006-008-011-013-014-016>018-501>508-VAZ027-028-030- 031-052>054-501-505>507-WVZ050>053-055-501>504-150200- /O.CON.KLWX.FW.W.0002.000000T0000Z-210315T0200Z/ District of Columbia-Washington-Frederick MD-Carroll- Northern Baltimore-Cecil-Southern Baltimore-Prince Georges- Anne Arundel-Charles-St. Marys-Calvert-Extreme Western Allegany- Central and Eastern Allegany-Northwest Montgomery- Central and Southeast Montgomery-Northwest Howard- Central and Southeast Howard-Northwest Harford-Southeast Harford- Shenandoah-Frederick VA-Warren-Clarke- Prince William/Manassas/Manassas Park-Fairfax- Arlington/Falls Church/Alexandria-Northern Fauquier- Western Loudoun-Eastern Loudoun-Northern Virginia Blue Ridge- Hampshire-Morgan-Berkeley-Jefferson-Hardy-Western Grant- Eastern Grant-Western Mineral-Eastern Mineral- 432 PM EDT Sun Mar 14 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM EDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR PORTIONS OF NORTHERN VIRGINIA...MUCH OF MARYLAND...EASTERN WEST VIRGINIA...AND THE DISTRICT OF COLUMBIA... * WINDS...Northwest 15 to 25 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 16 percent. * IMPACTS...Critical fire weather conditions are expected to develop today. All outdoor burning is discouraged, as fires could rapidly spread and become uncontrollable. * FUEL MOISTURE...3 to 6 percent for fine fuels. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. Be careful of heat and sparks while operating any equipment, and avoid smoking in wildland areas. && $$
757 WWUS81 KLWX 150200 RFWLWX URGENT - FIRE WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 1000 PM EDT Sun Mar 14 2021 DCZ001-MDZ003>006-008-011-013-014-016>018-501>508-VAZ027>031- 052>054-501-505>507-WVZ050>053-055-501>504-150300- /O.EXP.KLWX.FW.W.0002.000000T0000Z-210315T0200Z/ District of Columbia-Washington-Frederick MD-Carroll- Northern Baltimore-Cecil-Southern Baltimore-Prince Georges- Anne Arundel-Charles-St. Marys-Calvert-Extreme Western Allegany- Central and Eastern Allegany-Northwest Montgomery- Central and Southeast Montgomery-Northwest Howard- Central and Southeast Howard-Northwest Harford-Southeast Harford- Shenandoah-Frederick VA-Page-Warren-Clarke- Prince William/Manassas/Manassas Park-Fairfax- Arlington/Falls Church/Alexandria-Northern Fauquier- Western Loudoun-Eastern Loudoun-Northern Virginia Blue Ridge- Hampshire-Morgan-Berkeley-Jefferson-Hardy-Western Grant- Eastern Grant-Western Mineral-Eastern Mineral- 1000 PM EDT Sun Mar 14 2021 ...RED FLAG WARNING WILL EXPIRE AT 10 PM EDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR PORTIONS OF NORTHERN VIRGINIA... MUCH OF MARYLAND...EASTERN WEST VIRGINIA...AND THE DISTRICT OF COLUMBIA... Winds will diminish overnight through Monday, but relative humidities won't recover much overnight. It is likely that Monday will turn out drier than today, but the winds should be light. $$
The office that day
Everything else NWS Baltimore/Washington issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 14, 5:47 AM EDT | Gale Warning | LWX | 13 hr |
Nearby
Red Flag Warnings in Virginia, 2021Red Flag Warnings in Maryland, 2021Red Flag Warnings in West Virginia, 2021Every red flag warning in 2021
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.