Alert archive / West Virginia / Flash Flood Warnings in 2021
Flash Flood Warning 28, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this flash flood warning at Aug 16, 2021, 6:27 PM EDT for Marion County, Monongalia County, West Virginia; Greene County, Pennsylvania. 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 16, 2021, 6:27 PM EDT (22:27 UTC)
- Expired
- Aug 16, 2021, 9:30 PM EDT
- In force
- 3 hr
- Issued by
- NWS Pittsburgh, PA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Greene County, PA, Marion County, WV, Monongalia County, WV
The radar
The Pittsburgh radar (KPBZ), 93 km from the middle of the area, began a volume at 22:31 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
Pittsburgh, PA (KPIT), launched 12:00Z, 10.5 hours before the alert went out and 79 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
- 82 J/kg
- Mixed-layer CIN
- -73 J/kg
- Mixed-layer LCL
- 797 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 53 m²/s²
- 0-3 km storm-relative helicity
- 74 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
814
WGUS51 KPBZ 162227
FFWPBZ
PAC059-WVC049-061-170130-
/O.NEW.KPBZ.FF.W.0028.210816T2227Z-210817T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Pittsburgh PA
627 PM EDT Mon Aug 16 2021
The National Weather Service in Pittsburgh has issued a
* Flash Flood Warning for...
Southeastern Greene County in southwestern Pennsylvania...
North Central Marion County in northern West Virginia...
North Central Monongalia County in northern West Virginia...
* Until 930 PM EDT.
* At 627 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 2 inches of rain
have fallen. 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...
Cassville, Bobtown, Mount Morris, Core, Pentress, McCurdyville and
Daybrook.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.
&&
LAT...LON 3961 8023 3965 8024 3970 8020 3971 8019
3974 8014 3978 8004 3979 7997 3977 7994
3974 7996 3971 7999 3967 8004 3958 8017
FLASH FLOOD...RADAR INDICATED
$$
Brown2 follow-up statements
078
WGUS71 KPBZ 170026 RRA
FFSPBZ
Flash Flood Statement
National Weather Service Pittsburgh PA
826 PM EDT Mon Aug 16 2021
PAC059-WVC049-061-170130-
/O.CON.KPBZ.FF.W.0028.000000T0000Z-210817T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Greene PA-Marion WV-Monongalia WV-
826 PM EDT Mon Aug 16 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 930 PM EDT THIS
EVENING FOR SOUTHEASTERN GREENE, NORTH CENTRAL MARION AND NORTH
CENTRAL MONONGALIA COUNTIES...
At 826 PM EDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Between 2 and 3.5 inches of rain have
fallen. Flash flooding is ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Cassville, Bobtown, Mount Morris, Core, Pentress, McCurdyville and
Daybrook.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.
&&
LAT...LON 3961 8023 3965 8024 3970 8020 3971 8019
3974 8014 3978 8004 3979 7997 3977 7994
3974 7996 3971 7999 3967 8004 3958 8017
FLASH FLOOD...RADAR INDICATED
$$
Brown735
WGUS71 KPBZ 170126 RRA
FFSPBZ
Flash Flood Statement
National Weather Service Pittsburgh PA
926 PM EDT Mon Aug 16 2021
PAC059-WVC049-061-170136-
/O.EXP.KPBZ.FF.W.0028.000000T0000Z-210817T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Greene PA-Marion WV-Monongalia WV-
926 PM EDT Mon Aug 16 2021
...FLASH FLOOD WARNING WILL EXPIRE AT 930 PM EDT THIS EVENING FOR
SOUTHEASTERN GREENE, NORTH CENTRAL MARION AND NORTH CENTRAL
MONONGALIA COUNTIES...
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 3961 8023 3965 8024 3970 8020 3971 8019
3974 8014 3978 8004 3979 7997 3977 7994
3974 7996 3971 7999 3967 8004 3958 8017
$$
BrownThe office that day
Everything else NWS Pittsburgh, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 16, 4:17 PM EDT | Areal Flood Advisory | PBZ | Monongalia | 77 min |
| Aug 16, 7:18 PM EDT | Flash Flood Warning | PBZ | Marion, Monongalia | 2 hr |
Nearby
Flash Flood Warnings in West Virginia, 2021Flash Flood Warnings in Pennsylvania, 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.