Alert archive / West Virginia / Flash Flood Warnings in 2021
Flash Flood Warning 16, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this flash flood warning at Jul 29, 2021, 9:31 PM EDT for Monongalia County, West Virginia. It was in force for 2 hr. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 29, 2021, 9:31 PM EDT (01:31 UTC)
- Expired
- Jul 29, 2021, 11:56 PM EDT
- In force
- 2 hr
- Issued by
- NWS Pittsburgh, PA
- Area
- Storm-based polygon
- Flood severity
- None
County Monongalia County, WV
The radar
The Pittsburgh radar (KPBZ), 98 km from the middle of the area, began a volume at 01:32 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 29, 9:53 PM EDT | FLASH FLOOD | Morgantown, WV | NUMEROUS ROADS FLOODED IN AN AROUND MORGANTOWN. |
| Jul 29, 10:30 PM EDT | FLASH FLOOD | Westover, WV | REPORT OF NUMEROUS FLOODED ROADWAYS IN WESTOVER. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 00:00Z, 1.5 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
- 1003 J/kg
- Mixed-layer CIN
- -32 J/kg
- Mixed-layer LCL
- 915 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 97 m²/s²
- 0-3 km storm-relative helicity
- 134 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 4.9
The text
As transmitted.
495
WGUS51 KPBZ 300131
FFWPBZ
WVC061-300445-
/O.NEW.KPBZ.FF.W.0016.210730T0131Z-210730T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Pittsburgh PA
931 PM EDT Thu Jul 29 2021
The National Weather Service in Pittsburgh has issued a
* Flash Flood Warning for...
Northeastern Monongalia County in northern West Virginia...
* Until 1245 AM EDT.
* At 931 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Flash flooding is ongoing or
expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Morgantown, Westover, Star City, Granville, Cassville, Brookhaven,
Osage, Booth and Cheat Lake.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3970 7999 3965 7986 3955 7993 3966 8010
3970 8007 3971 8002 3970 8000
FLASH FLOOD...RADAR INDICATED
$$2 follow-up statements
705
WGUS71 KPBZ 300224
FFSPBZ
Flash Flood Statement
National Weather Service Pittsburgh PA
1024 PM EDT Thu Jul 29 2021
WVC061-300445-
/O.CON.KPBZ.FF.W.0016.000000T0000Z-210730T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Monongalia WV-
1024 PM EDT Thu Jul 29 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1245 AM EDT FRIDAY
FOR NORTHEASTERN MONONGALIA COUNTY...
At 1024 PM EDT, Most of the heavy rain has moved southeast of the
area. However, runoff from previous downpours will continue to
effect local streams. Flash flooding is ongoing or expected to begin
shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Morgantown, Westover, Star City, Granville, Cassville, Brookhaven,
Osage, Booth and Cheat Lake.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3970 7999 3965 7986 3955 7993 3966 8010
3970 8007 3971 8002 3970 8000
FLASH FLOOD...RADAR INDICATED
$$266
WGUS71 KPBZ 300356
FFSPBZ
Flash Flood Statement
National Weather Service Pittsburgh PA
1156 PM EDT Thu Jul 29 2021
WVC061-300406-
/O.CAN.KPBZ.FF.W.0016.000000T0000Z-210730T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Monongalia WV-
1156 PM EDT Thu Jul 29 2021
...FLASH FLOOD WARNING IS CANCELLED FOR NORTHEASTERN MONONGALIA
COUNTY...
Flood waters have receded. The heavy rain has ended. Flooding is no
longer expected to pose a threat. Please continue to heed remaining
road closures.
LAT...LON 3970 7999 3965 7986 3955 7993 3966 8010
3970 8007 3971 8002 3970 8000
$$The office that day
Everything else NWS Pittsburgh, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 29, 8:24 PM EDT | Areal Flood Advisory | PBZ | Marshall, Ohio | 3 hr |
| Jul 29, 8:32 PM EDT | Special Weather Statement | PBZ | Monongalia, Preston | 28 min |
| Jul 29, 8:51 PM EDT | Severe Thunderstorm Warning | PBZ | Monongalia, Preston | 39 min |
| Jul 29, 9:00 PM EDT | Areal Flood Advisory | PBZ | Monongalia | 2 hr |
| Jul 29, 9:27 PM EDT | Severe Thunderstorm Warning | PBZ | Preston, Tucker | 48 min |
| Jul 29, 10:13 PM EDT | Severe Thunderstorm Warning | PBZ | Tucker | 45 min |
| Jul 30, 12:47 AM EDT | Areal Flood Advisory | PBZ | Tucker | 118 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.