Alert archive / Ohio / Flash Flood Warnings in 2021
Flash Flood Warning 36, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this flash flood warning at Aug 31, 2021, 12:43 PM EDT for Harrison County, Jefferson County, Ohio. It was in force for 2 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 31, 2021, 12:43 PM EDT (16:43 UTC)
- Expired
- Aug 31, 2021, 2:45 PM EDT
- In force
- 2 hr
- Issued by
- NWS Pittsburgh, PA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Harrison County, OH, Jefferson County, OH
The radar
The Pittsburgh radar (KPBZ), 72 km from the middle of the area, began a volume at 16:47 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, 4.7 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
- 15 J/kg
- Mixed-layer CIN
- -48 J/kg
- Mixed-layer LCL
- 1074 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 2 m²/s²
- 0-3 km storm-relative helicity
- 84 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted.
249
WGUS51 KPBZ 311643
FFWPBZ
OHC067-081-311945-
/O.NEW.KPBZ.FF.W.0036.210831T1643Z-210831T1945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Pittsburgh PA
1243 PM EDT Tue Aug 31 2021
The National Weather Service in Pittsburgh has issued a
* Flash Flood Warning for...
Eastern Harrison County in east central Ohio...
West Central Jefferson OH County in east central Ohio...
* Until 345 PM EDT.
* At 1243 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...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...
Cadiz, Hopedale, Jewett, Unionport and Tappan Lake.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 4022 8115 4034 8115 4037 8099 4041 8085
4028 8083
FLASH FLOOD...RADAR INDICATED
$$1 follow-up statement
761
WGUS71 KPBZ 311845
FFSPBZ
Flash Flood Statement
National Weather Service Pittsburgh PA
245 PM EDT Tue Aug 31 2021
OHC067-081-311855-
/O.CAN.KPBZ.FF.W.0036.000000T0000Z-210831T1945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Harrison OH-Jefferson OH OH-
245 PM EDT Tue Aug 31 2021
...FLASH FLOOD WARNING IS CANCELLED FOR EASTERN HARRISON AND WEST
CENTRAL JEFFERSON OH COUNTIES...
Flood waters have receded. The heavy rain has ended. Flooding is no
longer expected to pose a threat. Please continue to heed remaining
road closures.
LAT...LON 4022 8115 4034 8115 4037 8099 4041 8085
4028 8083
$$
JLThe office that day
Everything else NWS Pittsburgh, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 31, 2:30 PM EDT | Areal Flood Advisory | PBZ | Carroll, Tuscarawas | 113 min |
| Aug 31, 5:05 PM EDT | Areal Flood Advisory | PBZ | Belmont, Harrison, Jefferson | 115 min |
| Aug 31, 5:52 PM EDT | Flash Flood Warning | PBZ | Belmont, Jefferson | 113 min |
Nearby
Flash Flood Warnings in Ohio, 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.