Alert archive / Pennsylvania / Flash Flood Watches in 2014

Flash Flood Watch 5, NWS Pittsburgh, PA

June 24, 201410 counties in Pennsylvania; 8 counties in Ohio; Hancock County, West Virginia

NWS Pittsburgh, PA issued this flash flood watch at Jun 24, 2014, 12:02 PM EDT for 10 counties in Pennsylvania; 8 counties in Ohio; Hancock County, West Virginia. It was in force for 26 hr.

The area

The counties it named.

The facts

Issued: Jun 24, 2014, 12:02 PM EDT (16:02 UTC)
Expired: Jun 25, 2014, 1:58 PM EDT
In force: 26 hr
Issued by: NWS Pittsburgh, PA
Flood severity: None

Counties Carroll County, OH, Columbiana County, OH, Coshocton County, OH, Guernsey County, OH, Harrison County, OH, Jefferson County, OH, Muskingum County, OH, Tuscarawas County, OH, Allegheny County, PA, Armstrong County, PA, Beaver County, PA, Butler County, PA, Clarion County, PA, Forest County, PA, Jefferson County, PA, Lawrence County, PA, Mercer County, PA, Venango County, PA, Hancock County, WV

The radar

The Pittsburgh radar (KPBZ), 30 km from the middle of the area, began a volume at 16:02 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 (KAGC), launched 12:00Z, 4.0 hours before the alert went out and 46 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: 81 J/kg
Mixed-layer CIN: -102 J/kg
Mixed-layer LCL: 1040 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 189 m²/s²
0-3 km storm-relative helicity: 189 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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 Jun 24, 6:08 AM EDT, 5 hours 54 minutes earlier.

Area forecast discussion, Jun 24, 6:08 AM EDT, 5 hours 54 minutes before

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Hazardous weather outlook, Jun 24, 4:37 AM EDT, 7 hours 25 minutes before

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In the hours before

Local storm report, Jun 24, 8:24 AM EDT, 3 hours 38 minutes before

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Local storm report, Jun 24, 8:32 AM EDT, 3 hours 30 minutes before

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Local storm report, Jun 24, 8:48 AM EDT, 3 hours 14 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 23, 10:43 PM EDT	Areal Flood Warning	PBZ	Butler	6 hr
Jun 24, 2:35 PM EDT	Special Weather Statement	PBZ	Forest	55 min
Jun 24, 2:44 PM EDT	Tornado Warning	PBZ	Clarion, Forest, Venango	31 min
Jun 24, 4:26 PM EDT	Special Weather Statement	PBZ	Forest	49 min
Jun 24, 6:52 PM EDT	Severe Thunderstorm Warning	PBZ	Butler	38 min
Jun 24, 7:29 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Clarion, Indiana, Jefferson, Venango	46 min
Jun 24, 5:47 PM EDT	Special Weather Statement	PBZ	Coshocton	28 min
Jun 24, 6:44 PM EDT	Special Weather Statement	PBZ	Carroll, Tuscarawas	46 min
Jun 24, 6:55 PM EDT	Severe Thunderstorm Warning	PBZ	Carroll, Tuscarawas	50 min
Jun 24, 7:00 PM EDT	Areal Flood Warning	PBZ	Tuscarawas	3 hr
Jun 24, 7:41 PM EDT	Severe Thunderstorm Warning	PBZ	Carroll, Columbiana, Harrison, Jefferson	37 min

Nearby

Flash Flood Watches in Pennsylvania, 2014 Flash Flood Watches in Ohio, 2014 Flash Flood Watches in West Virginia, 2014 Every flash flood watch in 2014

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.