Alert archive / West Virginia / Flash Flood Warnings in 2021

Flash Flood Warning 13, NWS Pittsburgh, PA

July 7, 2021Tucker County, West Virginia

NWS Pittsburgh, PA issued this flash flood warning at Jul 7, 2021, 3:53 PM EDT for Tucker County, West Virginia. It was in force for 100 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
Jul 7, 2021, 3:53 PM EDT (19:53 UTC)
Expired
Jul 7, 2021, 5:33 PM EDT
In force
100 min
Issued by
NWS Pittsburgh, PA
Area
Storm-based polygon
Flood severity
None

County Tucker County, WV

The radar

The Sterling radar (KLWX), 165 km from the middle of the area, began a volume at 19:53 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, 7.9 hours before the alert went out and 158 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.

Skew-T log-pSkew-T log-p diagram, Pittsburgh, PA at 12:00Z on 2021-07-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 505 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Pittsburgh, PA at 12:00Z on 2021-07-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 36 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
505 J/kg
Mixed-layer CIN
-47 J/kg
Mixed-layer LCL
1230 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
36 m²/s²
0-3 km storm-relative helicity
53 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

850 
WGUS51 KPBZ 071953
FFWPBZ
WVC093-072300-
/O.NEW.KPBZ.FF.W.0013.210707T1953Z-210707T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Pittsburgh PA
353 PM EDT Wed Jul 7 2021

The National Weather Service in Pittsburgh has issued a

* Flash Flood Warning for...
  Southeastern Tucker County in northeastern West Virginia...

* Until 700 PM EDT.

* At 353 PM EDT, Radar indicated thunderstorms producing heavy rain 
  across the warned area. Between 1 and 2 inches of rain have 
  fallen, with an additional 0.50 to 1.00 inch possible. 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...
  Davis, Thomas, Cortland, Canaan Hgts, Canaan Valley State Park, 
  Blackwater Falls, Red Creek, Elk and Benbush.

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 3919 7949 3918 7947 3919 7944 3919 7940
      3921 7934 3921 7931 3919 7929 3915 7933
      3912 7933 3909 7936 3907 7932 3907 7930
      3905 7930 3904 7932 3903 7931 3900 7932
      3897 7934 3898 7947 3897 7950 3901 7968

FLASH FLOOD...RADAR INDICATED

$$
2 follow-up statements
523 
WGUS71 KPBZ 072036
FFSPBZ

Flash Flood Statement
National Weather Service Pittsburgh PA
436 PM EDT Wed Jul 7 2021

WVC093-072300-
/O.CON.KPBZ.FF.W.0013.000000T0000Z-210707T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Tucker WV-
436 PM EDT Wed Jul 7 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 7 PM EDT THIS EVENING 
FOR SOUTHEASTERN TUCKER COUNTY...

At 436 PM EDT, Radar indicated showers lingering across the warned 
area, with additional thunderstorms expected to move north into the 
region. Between 1.5 and 2 inches of rain have fallen, with an 
additional 0.50 to 0.75 inches possible. 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...
  Davis, Thomas, Cortland, Canaan Hgts, Canaan Valley State Park, 
  Blackwater Falls, Red Creek, Elk and Benbush.

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 3919 7949 3918 7947 3919 7944 3919 7940
      3921 7934 3921 7931 3919 7929 3915 7933
      3912 7933 3909 7936 3907 7932 3907 7930
      3905 7930 3904 7932 3903 7931 3900 7932
      3897 7934 3898 7947 3897 7950 3901 7968

FLASH FLOOD...RADAR INDICATED

$$
914 
WGUS71 KPBZ 072133
FFSPBZ

Flash Flood Statement
National Weather Service Pittsburgh PA
533 PM EDT Wed Jul 7 2021

WVC093-072143-
/O.CAN.KPBZ.FF.W.0013.000000T0000Z-210707T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Tucker WV-
533 PM EDT Wed Jul 7 2021

...FLASH FLOOD WARNING IS CANCELLED FOR SOUTHEASTERN TUCKER COUNTY...

The heavy rain has ended and waters are receding. Flooding is no 
longer expected to pose a threat. Please continue to heed remaining 
road closures.

LAT...LON 3919 7949 3918 7947 3919 7944 3919 7940
      3921 7934 3921 7931 3919 7929 3915 7933
      3912 7933 3909 7936 3907 7932 3907 7930
      3905 7930 3904 7932 3903 7931 3900 7932
      3897 7934 3898 7947 3897 7950 3901 7968

$$

The office that day

Everything else NWS Pittsburgh, PA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 7, 1:26 PM EDTSpecial Weather StatementPBZMonongalia34 min
Jul 7, 1:56 PM EDTSpecial Weather StatementPBZOhio19 min
Jul 7, 2:28 PM EDTSpecial Weather StatementPBZHancock17 min
Jul 7, 2:37 PM EDTSevere Thunderstorm WarningPBZPreston, Tucker23 min
Jul 7, 2:42 PM EDTSevere Thunderstorm WarningPBZHancock18 min
Jul 7, 2:54 PM EDTSevere Thunderstorm WarningPBZBrooke, Hancock36 min
Jul 7, 2:58 PM EDTSevere Thunderstorm WarningPBZBrooke, Hancock32 min
Jul 7, 3:32 PM EDTSpecial Weather StatementPBZHancock28 min
Jul 7, 3:42 PM EDTSevere Thunderstorm WarningPBZHancock33 min
Jul 7, 4:11 PM EDTSpecial Weather StatementPBZHancock34 min
Jul 7, 4:16 PM EDTSevere Thunderstorm WarningPBZBrooke, Hancock44 min
Jul 7, 5:31 PM EDTAreal Flood AdvisoryPBZBrooke, Hancock119 min
Jul 7, 6:40 PM EDTSevere Thunderstorm WarningPBZMonongalia, Preston20 min
Jul 7, 7:37 PM EDTSevere Thunderstorm WarningPBZMarion, Monongalia, Wetzel23 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.