Alert archive / West Virginia / Flash Flood Warnings in 2021

Flash Flood Warning 4, NWS Pittsburgh, PA

June 13, 2021Marion County, Monongalia County, West Virginia

NWS Pittsburgh, PA issued this flash flood warning at Jun 13, 2021, 3:38 PM EDT for Marion County, Monongalia County, West Virginia. It was in force for 50 min. 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: Jun 13, 2021, 3:38 PM EDT (19:38 UTC)
Expired: Jun 13, 2021, 4:28 PM EDT
In force: 50 min
Issued by: NWS Pittsburgh, PA
Area: Storm-based polygon
Flood severity: None

Counties Marion County, WV, Monongalia County, WV

The radar

The Pittsburgh radar (KPBZ), 117 km from the middle of the area, began a volume at 19:38 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
Jun 13, 4:09 PM EDT	FLASH FLOOD	Pleasant View, WV	REPORT OF HIGH WATER ON US ROUTE 19 AT PLEASANT VIEW.
Jun 13, 4:13 PM EDT	FLASH FLOOD	Millersville, WV	REPORT OF HIGH WATER ON INTERSTATE 79 AT MILE MARKER 135 IN PLEASANT VALLEY.

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 12:00Z, 7.6 hours before the alert went out and 103 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1001 J/kg
Mixed-layer CIN: -33 J/kg
Mixed-layer LCL: 944 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 53 m²/s²
0-3 km storm-relative helicity: 47 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.3

Open this sounding in Storm Lab

The text

As transmitted.

117 
WGUS51 KPBZ 131938
FFWPBZ
WVC049-061-132130-
/O.NEW.KPBZ.FF.W.0004.210613T1938Z-210613T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Pittsburgh PA
338 PM EDT Sun Jun 13 2021

The National Weather Service in Pittsburgh has issued a

* Flash Flood Warning for...
  East Central Marion County in northern West Virginia...
  South Central Monongalia County in northern West Virginia...

* Until 530 PM EDT.

* At 338 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...
  Fairmont, Pleasant Valley, Winfield, Barrackville, Monongah, 
  Rivesville, Farmington, Baxter and Idamay.

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 3948 7996 3946 7997 3945 7998 3945 8022
      3951 8026 3956 8010

FLASH FLOOD...RADAR INDICATED

$$

1 follow-up statement

898 
WGUS71 KPBZ 132028
FFSPBZ

Flash Flood Statement
National Weather Service Pittsburgh PA
428 PM EDT Sun Jun 13 2021

WVC049-061-132038-
/O.CAN.KPBZ.FF.W.0004.000000T0000Z-210613T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Marion WV-Monongalia WV-
428 PM EDT Sun Jun 13 2021

...FLASH FLOOD WARNING IS CANCELLED FOR EAST CENTRAL MARION AND 
SOUTH CENTRAL MONONGALIA COUNTIES...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat as flood waters slowly recede. Please continue to heed 
remaining road closures.

LAT...LON 3948 7996 3946 7997 3945 7998 3945 8022
      3951 8026 3956 8010

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 13, 11:51 AM EDT	Special Weather Statement	PBZ	Preston	24 min
Jun 13, 12:31 PM EDT	Special Weather Statement	PBZ	Ohio	29 min
Jun 13, 12:50 PM EDT	Severe Thunderstorm Warning	PBZ	Preston, Tucker	25 min
Jun 13, 1:06 PM EDT	Severe Thunderstorm Warning	PBZ	Monongalia, Preston	24 min
Jun 13, 1:26 PM EDT	Severe Thunderstorm Warning	PBZ	Preston, Tucker	49 min
Jun 13, 1:37 PM EDT	Severe Thunderstorm Warning	PBZ	Marion, Monongalia, Preston	38 min
Jun 13, 1:57 PM EDT	Severe Thunderstorm Warning	PBZ	Marion, Monongalia	20 min
Jun 13, 2:08 PM EDT	Severe Thunderstorm Warning	PBZ	Marion, Monongalia	33 min
Jun 13, 2:16 PM EDT	Flash Flood Warning	PBZ	Monongalia, Preston	2 hr
Jun 13, 2:32 PM EDT	Areal Flood Advisory	PBZ	Preston, Tucker	118 min
Jun 13, 2:40 PM EDT	Severe Thunderstorm Warning	PBZ	Marion, Wetzel	35 min
Jun 13, 3:11 PM EDT	Areal Flood Advisory	PBZ	Marion, Monongalia	64 min
Jun 13, 3:13 PM EDT	Severe Thunderstorm Warning	PBZ	Marion, Monongalia, Preston	47 min
Jun 13, 4:27 PM EDT	Areal Flood Warning	PBZ	Preston	48 min
Jun 13, 5:18 PM EDT	Areal Flood Advisory	PBZ	Marion, Monongalia, Preston, Tucker	117 min
Jun 13, 6:21 PM EDT	Severe Thunderstorm Warning	PBZ	Marshall, Ohio	39 min

Nearby

Flash Flood Warnings in West Virginia, 2021 Every 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.