Alert archive / Virginia / Flash Flood Warnings in 2021
Flash Flood Warning 35, NWS Baltimore/Washington
NWS Baltimore/Washington issued this flash flood warning at Aug 13, 2021, 3:35 PM EDT for Orange County, Virginia. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 13, 2021, 3:35 PM EDT (19:35 UTC)
- Expired
- Aug 13, 2021, 6:21 PM EDT
- In force
- 3 hr
- Issued by
- NWS Baltimore/Washington
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Flood severity
- None
County Orange County, VA
The radar
The Sterling radar (KLWX), 109 km from the middle of the area, began a volume at 19:35 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, 7.6 hours before the alert went out and 112 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
- 313 J/kg
- Mixed-layer CIN
- -199 J/kg
- Mixed-layer LCL
- 1675 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- -11 m²/s²
- 0-3 km storm-relative helicity
- 58 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
266
WGUS51 KLWX 131935
FFWLWX
VAC137-132245-
/O.NEW.KLWX.FF.W.0035.210813T1935Z-210813T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Baltimore MD/Washington DC
335 PM EDT Fri Aug 13 2021
The National Weather Service in Sterling Virginia has issued a
* Flash Flood Warning for...
West Central Orange County in central Virginia...
* Until 645 PM EDT.
* At 335 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 3 inches of rain
have fallen. Additional rainfall amounts of 1 to 3 inches are
possible in the warned area. Flash flooding is ongoing or expected
to begin shortly.
HAZARD...Life threatening flash flooding. Thunderstorms
producing flash flooding.
SOURCE...Radar.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
* Some locations that will experience flash flooding include...
Eheart... Barboursville...
This includes the following Flood Prone Roads:
Route 20 at Route 33...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3826 7830 3824 7828 3823 7826 3821 7822
3816 7828 3818 7836
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
CS1 follow-up statement
278
WGUS71 KLWX 132221
FFSLWX
Flash Flood Statement
National Weather Service Baltimore MD/Washington DC
621 PM EDT Fri Aug 13 2021
VAC137-132231-
/O.CAN.KLWX.FF.W.0035.000000T0000Z-210813T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Orange VA-
621 PM EDT Fri Aug 13 2021
...FLASH FLOOD WARNING IS CANCELLED FOR WEST CENTRAL ORANGE COUNTY...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
LAT...LON 3826 7830 3824 7828 3823 7826 3821 7822
3816 7828 3818 7836
$$
CSThe office that day
Everything else NWS Baltimore/Washington issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 13, 2:36 AM EDT | Special Marine Warning | LWX | 36 min | |
| Aug 13, 1:28 PM EDT | Severe Thunderstorm Warning | LWX | Rockingham | 47 min |
| Aug 13, 1:59 PM EDT | Severe Thunderstorm Warning | LWX | Augusta, Rockingham, City of Harrisonburg, City of Staunton | 30 min |
| Aug 13, 2:18 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Shenandoah, City of Winchester | 42 min |
| Aug 13, 2:19 PM EDT | Severe Thunderstorm Warning | LWX | Page, Rockingham, Shenandoah, City of Harrisonburg | 41 min |
| Aug 13, 2:24 PM EDT | Severe Thunderstorm Warning | LWX | Rockingham | 22 min |
| Aug 13, 2:38 PM EDT | Severe Thunderstorm Warning | LWX | Clarke | 35 min |
| Aug 13, 2:51 PM EDT | Severe Thunderstorm Warning | LWX | Albemarle, Augusta, Nelson, City of Waynesboro | 24 min |
| Aug 13, 2:55 PM EDT | Severe Thunderstorm Warning | LWX | Albemarle, Augusta, Greene, Page, Rockingham | 50 min |
| Aug 13, 2:59 PM EDT | Severe Thunderstorm Warning | LWX | Clarke, Frederick, Warren | 34 min |
| Aug 13, 3:01 PM EDT | Severe Thunderstorm Warning | LWX | Augusta, Nelson | 23 min |
| Aug 13, 3:05 PM EDT | Severe Thunderstorm Warning | LWX | Greene, Madison, Orange | 25 min |
| Aug 13, 3:16 PM EDT | Flash Flood Warning | LWX | Albemarle, Augusta, Nelson, City of Waynesboro | 100 min |
| Aug 13, 3:18 PM EDT | Severe Thunderstorm Warning | LWX | Albemarle, Augusta, Nelson, City of Waynesboro | 42 min |
| Aug 13, 3:26 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Shenandoah, Warren | 25 min |
| Aug 13, 3:30 PM EDT | Severe Thunderstorm Warning | LWX | Greene, Madison, Orange, Page | 45 min |
| Aug 13, 3:53 PM EDT | Severe Thunderstorm Warning | LWX | Albemarle, Greene, Madison, Orange | 52 min |
| Aug 13, 4:02 PM EDT | Severe Thunderstorm Warning | LWX | Nelson | 43 min |
| Aug 13, 4:05 PM EDT | Severe Thunderstorm Warning | LWX | Fairfax, Loudoun | 40 min |
| Aug 13, 4:28 PM EDT | Severe Thunderstorm Warning | LWX | Fauquier, Prince William | 47 min |
| Aug 13, 4:32 PM EDT | Special Marine Warning | LWX | 88 min | |
| Aug 13, 4:32 PM EDT | Severe Thunderstorm Warning | LWX | Fauquier, Prince William | 43 min |
| Aug 13, 4:35 PM EDT | Severe Thunderstorm Warning | LWX | Culpeper, Fauquier | 27 min |
| Aug 13, 4:43 PM EDT | Special Marine Warning | LWX | 2 hr | |
| Aug 13, 4:46 PM EDT | Severe Thunderstorm Warning | LWX | Fairfax, Loudoun, City of Falls Church | 29 min |
| Aug 13, 5:03 PM EDT | Special Marine Warning | LWX | 87 min | |
| Aug 13, 5:05 PM EDT | Special Marine Warning | LWX | 115 min | |
| Aug 13, 5:11 PM EDT | Severe Thunderstorm Warning | LWX | Arlington, Fairfax, Prince William, City of Alexandria, City of Fairfax, City of Falls Church and 2 more | 49 min |
| Aug 13, 5:14 PM EDT | Severe Thunderstorm Warning | LWX | Fauquier, Prince William | 31 min |
| Aug 13, 5:16 PM EDT | Severe Thunderstorm Warning | LWX | Fauquier, Prince William, Stafford, City of Manassas | 44 min |
| Aug 13, 5:18 PM EDT | Special Marine Warning | LWX | 104 min | |
| Aug 13, 5:27 PM EDT | Special Marine Warning | LWX | 93 min | |
| Aug 13, 5:43 PM EDT | Special Marine Warning | LWX | 92 min | |
| Aug 13, 5:56 PM EDT | Severe Thunderstorm Warning | LWX | Arlington, Fairfax, Prince William, Stafford, City of Alexandria, City of Falls Church | 49 min |
| Aug 13, 6:05 PM EDT | Severe Thunderstorm Warning | LWX | King George, Spotsylvania, Stafford, City of Fredericksburg | 40 min |
| Aug 13, 6:09 PM EDT | Special Marine Warning | LWX | 96 min | |
| Aug 13, 6:19 PM EDT | Special Marine Warning | LWX | 56 min | |
| Aug 13, 6:26 PM EDT | Special Marine Warning | LWX | 64 min | |
| Aug 13, 6:33 PM EDT | Severe Thunderstorm Warning | LWX | King George | 42 min |
| Aug 13, 6:55 PM EDT | Special Marine Warning | LWX | 95 min | |
| Aug 13, 7:15 PM EDT | Special Marine Warning | LWX | 60 min |
Nearby
Flash Flood Warnings in Virginia, 2021Every flash flood 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.