Alert archive / Ohio / Flash Flood Watches in 2011

Flash Flood Watch 1, NWS Pittsburgh, PA

April 19, 2011Fayette County, Greene County, Washington County, Pennsylvania; 5 counties in Ohio; 4 counties in West Virginia

NWS Pittsburgh, PA issued this flash flood watch at Apr 19, 2011, 3:29 PM EDT for Fayette County, Greene County, Washington County, Pennsylvania; 5 counties in Ohio; 4 counties in West Virginia. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Apr 19, 2011, 3:29 PM EDT (19:29 UTC)
Expired
Apr 19, 2011, 6:32 PM EDT
In force
3 hr
Issued by
NWS Pittsburgh, PA
Flood severity
None

Counties Belmont County, OH, Guernsey County, OH, Monroe County, OH, Muskingum County, OH, Noble County, OH, Fayette County, PA, Greene County, PA, Washington County, PA, Marion County, WV, Marshall County, WV, Ohio County, WV, Wetzel County, WV

The radar

The Pittsburgh radar (KPBZ), 86 km from the middle of the area, began a volume at 19:31 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, 7.5 hours before the alert went out and 82 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 2011-04-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 2011-04-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 219 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
470 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
219 m²/s²
0-3 km storm-relative helicity
361 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Pittsburgh, PA wrote its last area forecast discussion before this flash flood watch went out at Apr 19, 12:58 PM EDT, 2 hours 31 minutes earlier.

Area forecast discussion, Apr 19, 12:58 PM EDT, 2 hours 31 minutes before
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Hazardous weather outlook, Apr 19, 12:54 PM EDT, 2 hours 35 minutes before
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In the hours before

Local storm report, Apr 19, 11:13 AM EDT, 4 hours 16 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE PITTSBURGH PA
1113 AM EDT TUE APR 19 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1100 AM     FLOOD            CARLISLE                39.75N  81.36W
04/19/2011                   NOBLE              OH   LAW ENFORCEMENT

            ROAD FLOODING AFFECTING SR 260 AND SR 724

&&

CORRECTED SOURCE

EVENT NUMBER PBZ1100624

NWS
Local storm report, Apr 19, 11:16 AM EDT, 4 hours 13 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
1116 AM EDT TUE APR 19 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1045 AM     FLOOD            SARAHSVILLE             39.81N  81.47W
04/19/2011                   NOBLE              OH   PUBLIC

            ROAD FLOODING.

&&

EVENT NUMBER PBZ1100626

NWS
Local storm report, Apr 19, 12:19 PM EDT, 3 hours 10 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
1219 PM EDT TUE APR 19 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1213 PM     FLOOD            ROSEVILLE               39.81N  82.07W
04/19/2011                   MUSKINGUM          OH   EMERGENCY MNGR

            ROADS AFFECTED BY FLOODING... ELKS RUN... EAST
            ATHENS... CANTLEVILLE AND BUSH HILL ROADS.

&&

EVENT NUMBER PBZ1100628
Local storm report, Apr 19, 12:59 PM EDT, 2 hours 30 minutes before
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Special weather statement, Apr 19, 2:26 PM EDT, 1 hour 3 minutes before
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Special weather statement, Apr 19, 3:05 PM EDT, 24 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Apr 18, 10:04 PM EDTSpecial Weather StatementPBZButler26 min
Apr 18, 10:28 PM EDTSpecial Weather StatementPBZClarion32 min
Apr 19, 10:23 AM EDTFlood WatchPBZFayette, Greene, Washington5 hr
Apr 19, 4:10 PM EDTSpecial Weather StatementPBZGreene50 min
Apr 19, 4:13 PM EDTRiver Flood AdvisoryPBZAllegheny11 days
Apr 19, 4:36 PM EDTSpecial Weather StatementPBZFayette, Greene54 min
Apr 19, 7:15 PM EDTSpecial Weather StatementPBZArmstrong, Butler, Clarion45 min
Apr 19, 10:03 AM EDTAreal Flood WarningPBZBelmont, Guernsey, Monroe, Muskingum, Noble9 hr
Apr 19, 2:26 PM EDTSpecial Weather StatementPBZCarroll, Coshocton, Guernsey, Harrison, Muskingum, Tuscarawas109 min
Apr 19, 3:05 PM EDTSpecial Weather StatementPBZNoble25 min
Apr 19, 7:01 PM EDTAreal Flood WarningPBZBelmont, Guernsey, Monroe, Muskingum, Noble3 hr
Apr 19, 9:29 AM EDTSpecial Weather StatementPBZPreston, Tucker61 min
Apr 19, 10:49 AM EDTAreal Flood WarningPBZPreston9 hr
Apr 19, 11:32 AM EDTAreal Flood WarningPBZMarion, Monongalia4 hr
Apr 19, 5:11 PM EDTAreal Flood WarningPBZMonongalia6 hr
Apr 19, 5:18 PM EDTSpecial Weather StatementPBZPreston57 min
Apr 19, 5:51 PM EDTAreal Flood WarningPBZMarshall3 hr

Nearby

Flash Flood Watches in Ohio, 2011Flash Flood Watches in West Virginia, 2011Flash Flood Watches in Pennsylvania, 2011Every flash flood watch in 2011

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.