Alert archive / West Virginia / Flash Flood Warnings in 2021
Flash Flood Warning 36, NWS Baltimore/Washington
NWS Baltimore/Washington issued this flash flood warning at Aug 13, 2021, 3:39 PM EDT for Hardy County, West Virginia. It was in force for 87 min. 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, 3:39 PM EDT (19:39 UTC)
- Expired
- Aug 13, 2021, 5:06 PM EDT
- In force
- 87 min
- Issued by
- NWS Baltimore/Washington
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Flood severity
- None
County Hardy County, WV
The radar
The Sterling radar (KLWX), 101 km from the middle of the area, began a volume at 19:40 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, 7.7 hours before the alert went out and 109 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.
116
WGUS51 KLWX 131939
FFWLWX
WVC031-132245-
/O.NEW.KLWX.FF.W.0036.210813T1939Z-210813T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Baltimore MD/Washington DC
339 PM EDT Fri Aug 13 2021
The National Weather Service in Sterling Virginia has issued a
* Flash Flood Warning for...
East Central Hardy County in eastern West Virginia...
* Until 645 PM EDT.
* At 339 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 2 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...
Wardensville... Mccauley...
Baker...
This includes the following Flood Prone Roads:
Route 29 at Sperry Run...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3912 7865 3912 7862 3912 7859 3911 7854
3909 7853 3903 7861 3900 7870 3903 7881
3910 7878 3913 7871
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
CS1 follow-up statement
504
WGUS71 KLWX 132106
FFSLWX
Flash Flood Statement
National Weather Service Baltimore MD/Washington DC
506 PM EDT Fri Aug 13 2021
WVC031-132116-
/O.CAN.KLWX.FF.W.0036.000000T0000Z-210813T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Hardy WV-
506 PM EDT Fri Aug 13 2021
...FLASH FLOOD WARNING IS CANCELLED FOR EAST CENTRAL HARDY COUNTY...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
LAT...LON 3912 7865 3912 7862 3912 7859 3911 7854
3909 7853 3903 7861 3900 7870 3903 7881
3910 7878 3913 7871
$$
CSThe office that day
Everything else NWS Baltimore/Washington issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 13, 1:43 PM EDT | Severe Thunderstorm Warning | LWX | Morgan | 47 min |
| Aug 13, 2:18 PM EDT | Severe Thunderstorm Warning | LWX | Hampshire, Hardy | 42 min |
| Aug 13, 2:24 PM EDT | Severe Thunderstorm Warning | LWX | Hardy, Pendleton | 22 min |
| Aug 13, 2:38 PM EDT | Severe Thunderstorm Warning | LWX | Jefferson | 35 min |
| Aug 13, 5:39 PM EDT | Severe Thunderstorm Warning | LWX | Pendleton | 23 min |
Nearby
Flash Flood Warnings in West 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.