Alert archive / West Virginia / Areal Flood Advisories in 2021

Areal Flood Advisory 13, NWS Pittsburgh, PA

June 11, 2021Greene County, Pennsylvania; Marshall County, Monongalia County, Wetzel County, West Virginia

NWS Pittsburgh, PA issued this areal flood advisory at Jun 11, 2021, 6:37 AM EDT for Greene County, Pennsylvania; Marshall County, Monongalia County, Wetzel County, West Virginia. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Jun 11, 2021, 6:37 AM EDT (10:37 UTC)
Expired
Jun 11, 2021, 9:16 AM EDT
In force
3 hr
Issued by
NWS Pittsburgh, PA
Area
Storm-based polygon

Counties Greene County, PA, Marshall County, WV, Monongalia County, WV, Wetzel County, WV

The radar

The Pittsburgh radar (KPBZ), 90 km from the middle of the area, began a volume at 10:36 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 00:00Z, 10.6 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.

Skew-T log-pSkew-T log-p diagram, Pittsburgh, PA at 00:00Z on 2021-06-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 84 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Pittsburgh, PA at 00:00Z on 2021-06-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 31 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
84 J/kg
Mixed-layer CIN
-58 J/kg
Mixed-layer LCL
1003 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
31 m²/s²
0-3 km storm-relative helicity
69 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 11, 1:47 PM EDTAreal Flood AdvisoryPBZWashington71 min
Jun 10, 8:34 PM EDTAreal Flood AdvisoryPBZMarion116 min
Jun 11, 3:23 AM EDTFlash Flood WatchPBZMarion, Monongalia, Preston, Tucker, Wetzel15 hr
Jun 11, 5:26 AM EDTAreal Flood AdvisoryPBZMarshall, Wetzel3 hr
Jun 11, 3:22 PM EDTAreal Flood AdvisoryPBZMarion3 hr
Jun 11, 3:51 PM EDTFlash Flood WarningPBZMarion114 min
Jun 11, 2:55 PM EDTSpecial Weather StatementPBZMuskingum35 min

Nearby

Areal Flood Advisories in West Virginia, 2021Areal Flood Advisories in Pennsylvania, 2021Every areal flood advisory 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.