Alert archive / Virginia / Red Flag Warnings in 2021
Red Flag Warning 3, NWS Baltimore/Washington
NWS Baltimore/Washington issued this red flag warning at Apr 30, 2021, 12:24 PM EDT for Orange County, Spotsylvania County, City of Fredericksburg, Virginia. It was in force for 7 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
- Apr 30, 2021, 12:24 PM EDT (16:24 UTC)
- Expired
- Apr 30, 2021, 7:29 PM EDT
- In force
- 7 hr
- Issued by
- NWS Baltimore/Washington
Counties City of Fredericksburg, VA, Orange County, VA, Spotsylvania County, VA
The radar
The Sterling radar (KLWX), 84 km from the middle of the area, began a volume at 16:26 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, 4.4 hours before the alert went out and 83 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
- 1380 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 10 m²/s²
- 0-3 km storm-relative helicity
- 9 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
472 WWUS81 KLWX 301624 RFWLWX URGENT - FIRE WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 1224 PM EDT Fri Apr 30 2021 VAZ050-056-010000- /O.NEW.KLWX.FW.W.0003.210430T1624Z-210501T0000Z/ Orange-Spotsylvania- 1224 PM EDT Fri Apr 30 2021 ...RED FLAG WARNING IN EFFECT UNTIL 8 PM EDT THIS EVENING FOR LOW HUMIDITY AND STRONG WINDS FOR ORANGE AND SPOTSYLVANIA COUNTIES... The National Weather Service in Baltimore MD/Washington has issued a Red Flag Warning for low humidity and strong wind, which is in effect until 8 PM EDT this evening. * WINDS...Northwest 15 to 25 mph with gusts up to 45 mph. * RELATIVE HUMIDITY...As low as 25 percent. * IMPACTS...Critical fire weather conditions are expected through this evening. All outdoor burning is discouraged, as fires could rapidly spread and become uncontrollable. * FUEL MOISTURE...Around 8 percent. 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. && $$ DHOF
1 follow-up statement
961 WWUS81 KLWX 302329 RFWLWX URGENT - FIRE WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 729 PM EDT Fri Apr 30 2021 VAZ050-056-010030- /O.CAN.KLWX.FW.W.0003.000000T0000Z-210501T0000Z/ Orange-Spotsylvania- 729 PM EDT Fri Apr 30 2021 ...RED FLAG WARNING IS CANCELLED FOR STRONG WINDS AND LOW HUMIDITY FOR ORANGE...SPOTSYLVANIA AND CITY OF FREDERICKSBURG... The National Weather Service in Baltimore MD/Washington has cancelled the Red Flag Warning. Humidities have risen as showers have arrived. $$
The office that day
Everything else NWS Baltimore/Washington issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 29, 8:18 PM EDT | High Wind Warning | LWX | Albemarle, Amherst, Arlington, Augusta, Fairfax, Greene and 12 more | 25 hr |
| Apr 29, 8:18 PM EDT | Wind Advisory | LWX | Albemarle, Amherst, Arlington, Augusta, Clarke, Culpeper and 24 more | 30 hr |
| Apr 29, 8:36 PM EDT | Storm Warning | LWX | 24 hr | |
| Apr 29, 10:32 PM EDT | Special Marine Warning | LWX | 99 min | |
| Apr 29, 10:34 PM EDT | Special Marine Warning | LWX | 116 min | |
| Apr 29, 11:20 PM EDT | Special Marine Warning | LWX | 115 min | |
| Apr 29, 11:25 PM EDT | Special Marine Warning | LWX | 2 hr | |
| Apr 29, 11:53 PM EDT | Special Marine Warning | LWX | 2 hr | |
| Apr 30, 12:09 AM EDT | Special Marine Warning | LWX | 2 hr | |
| Apr 30, 12:29 PM EDT | Freeze Warning | LWX | Highland | 21 hr |
| Apr 30, 4:31 PM EDT | Severe Thunderstorm Warning | LWX | Loudoun | 29 min |
| Apr 30, 4:36 PM EDT | Special Marine Warning | LWX | 59 min | |
| Apr 30, 4:38 PM EDT | Special Marine Warning | LWX | 49 min | |
| Apr 30, 4:39 PM EDT | Severe Thunderstorm Warning | LWX | Arlington, Fairfax, Fauquier, Loudoun, Prince William, City of Alexandria and 4 more | 36 min |
| Apr 30, 5:05 PM EDT | Special Marine Warning | LWX | 45 min | |
| Apr 30, 5:08 PM EDT | Special Marine Warning | LWX | 54 min |
Nearby
Red Flag Warnings in 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.