Alert archive / Pennsylvania / Flash Flood Watches in 2013

Flash Flood Watch 2, NWS Pittsburgh, PA

June 26, 201314 counties in Pennsylvania; 11 counties in Ohio; 6 counties in West Virginia

NWS Pittsburgh, PA issued this flash flood watch at Jun 26, 2013, 11:34 AM EDT for 14 counties in Pennsylvania; 11 counties in Ohio; 6 counties in West Virginia. It took effect at Jun 26, 2013, 6:00 PM EDT. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued: Jun 26, 2013, 11:34 AM EDT (15:34 UTC)
In effect from: Jun 26, 2013, 6:00 PM EDT
Expired: Jun 27, 2013, 1:32 AM EDT
In force: 8 hr
Issued by: NWS Pittsburgh, PA
Flood severity: None

All 31 counties

Belmont County, OH, Carroll County, OH, Columbiana County, OH, Coshocton County, OH, Guernsey County, OH, Harrison County, OH, Jefferson County, OH, Monroe County, OH, Muskingum County, OH, Noble County, OH, Tuscarawas County, OH, Allegheny County, PA, Armstrong County, PA, Beaver County, PA, Butler County, PA, Clarion County, PA, Fayette County, PA, Forest County, PA, Greene County, PA, Jefferson County, PA, Lawrence County, PA, Mercer County, PA, Venango County, PA, Washington County, PA, Westmoreland County, PA, Brooke County, WV, Hancock County, WV, Marion County, WV, Marshall County, WV, Ohio County, WV, Wetzel County, WV

The radar

The Pittsburgh radar (KPBZ), 25 km from the middle of the area, began a volume at 15:36 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

Cncnati-Daytn, OH (KILN), launched 12:00Z, 3.6 hours before the alert went out and 304 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: 19 J/kg
Mixed-layer CIN: -204 J/kg
Mixed-layer LCL: 894 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 61 m²/s²
0-3 km storm-relative helicity: 90 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 Jun 26, 9:39 AM EDT, 1 hour 55 minutes earlier.

Area forecast discussion, Jun 26, 9:39 AM EDT, 1 hour 55 minutes before

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Hazardous weather outlook, Jun 26, 5:18 AM EDT, 6 hours 16 minutes before

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In the hours before

Local storm report, Jun 26, 8:59 AM EDT, 2 hours 35 minutes before

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Local storm report, Jun 26, 9:13 AM EDT, 2 hours 21 minutes before

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Local storm report, Jun 26, 9:27 AM EDT, 2 hours 7 minutes before

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Local storm report, Jun 26, 9:49 AM EDT, 1 hour 45 minutes before

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Local storm report, Jun 26, 9:50 AM EDT, 1 hour 44 minutes before

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Local storm report, Jun 26, 10:01 AM EDT, 1 hour 33 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 25, 8:00 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Greene, Washington	45 min
Jun 25, 9:34 PM EDT	Severe Thunderstorm Warning	PBZ	Mercer	56 min
Jun 25, 10:12 PM EDT	Special Weather Statement	PBZ	Venango	63 min
Jun 25, 10:27 PM EDT	Special Weather Statement	PBZ	Armstrong	63 min
Jun 25, 10:34 PM EDT	Special Weather Statement	PBZ	Beaver	56 min
Jun 25, 10:52 PM EDT	Severe Thunderstorm Warning	PBZ	Beaver	38 min
Jun 25, 11:01 PM EDT	Special Weather Statement	PBZ	Jefferson	59 min
Jun 25, 11:09 PM EDT	Special Weather Statement	PBZ	Armstrong, Beaver, Butler	81 min
Jun 26, 12:06 AM EDT	Special Weather Statement	PBZ	Allegheny	69 min
Jun 26, 12:50 AM EDT	Areal Flood Warning	PBZ	Allegheny, Beaver, Washington, Westmoreland	6 hr
Jun 26, 1:45 AM EDT	Severe Thunderstorm Warning	PBZ	Washington	60 min
Jun 25, 8:23 PM EDT	Severe Thunderstorm Warning	PBZ	Coshocton, Guernsey, Muskingum	52 min
Jun 25, 8:29 PM EDT	Severe Thunderstorm Warning	PBZ	Guernsey, Muskingum, Noble	46 min
Jun 25, 9:16 PM EDT	Special Weather Statement	PBZ	Guernsey	29 min
Jun 25, 9:20 PM EDT	Severe Thunderstorm Warning	PBZ	Guernsey, Harrison, Noble	55 min
Jun 25, 9:49 PM EDT	Special Weather Statement	PBZ	Carroll, Tuscarawas	41 min
Jun 25, 10:56 PM EDT	Severe Thunderstorm Warning	PBZ	Carroll, Harrison, Jefferson, Tuscarawas	49 min
Jun 25, 11:43 PM EDT	Special Weather Statement	PBZ	Jefferson	62 min
Jun 26, 12:02 AM EDT	Severe Thunderstorm Warning	PBZ	Harrison, Tuscarawas	43 min
Jun 26, 12:20 AM EDT	Severe Thunderstorm Warning	PBZ	Carroll, Harrison, Jefferson	55 min
Jun 26, 12:28 AM EDT	Special Weather Statement	PBZ	Guernsey	62 min
Jun 26, 1:04 AM EDT	Special Weather Statement	PBZ	Coshocton	56 min
Jun 26, 1:21 AM EDT	Severe Thunderstorm Warning	PBZ	Belmont, Harrison, Jefferson	39 min
Jun 26, 1:34 AM EDT	Special Weather Statement	PBZ	Harrison	56 min
Jun 26, 2:37 AM EDT	Special Weather Statement	PBZ	Harrison	38 min
Jun 26, 3:16 AM EDT	Special Weather Statement	PBZ	Belmont, Harrison	44 min
Jun 26, 11:37 AM EDT	River Flood Watch	PBZ	Tuscarawas	10 hr
Jun 26, 8:03 AM EDT	Special Weather Statement	PBZ	Tucker	42 min

Nearby

Flash Flood Watches in Pennsylvania, 2013 Flash Flood Watches in Ohio, 2013 Flash Flood Watches in West Virginia, 2013 Every flash flood watch in 2013

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.