Alert archive / Pennsylvania / Flash Flood Watches in 2015

Flash Flood Watch 2, NWS Pittsburgh, PA

June 14, 201514 counties in Pennsylvania; 11 counties in Ohio; 6 counties in West Virginia

NWS Pittsburgh, PA issued this flash flood watch at Jun 14, 2015, 3:15 PM EDT for 14 counties in Pennsylvania; 11 counties in Ohio; 6 counties in West Virginia. It was in force for 41 hr.

The area

The counties it named.

The facts

Issued: Jun 14, 2015, 3:15 PM EDT (19:15 UTC)
Expired: Jun 16, 2015, 8:42 AM EDT
In force: 41 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 19:15 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, 7.3 hours before the alert went out and 32 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: 131 J/kg
Mixed-layer CIN: -69 J/kg
Mixed-layer LCL: 689 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 54 m²/s²
0-3 km storm-relative helicity: 74 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 14, 1:50 PM EDT, 1 hour 25 minutes earlier.

Area forecast discussion, Jun 14, 1:50 PM EDT, 1 hour 25 minutes before

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Hazardous weather outlook, Jun 14, 1:35 PM EDT, 1 hour 40 minutes before

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In the hours before

Special weather statement, Jun 14, 2:50 PM EDT, 25 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 13, 8:42 PM EDT	Special Weather Statement	PBZ	Butler	33 min
Jun 14, 3:30 PM EDT	Severe Thunderstorm Warning	PBZ	Butler, Lawrence, Mercer, Venango	45 min
Jun 14, 3:47 PM EDT	Special Weather Statement	PBZ	Washington	43 min
Jun 14, 4:15 PM EDT	Special Weather Statement	PBZ	Fayette	45 min
Jun 14, 4:16 PM EDT	Areal Flood Advisory	PBZ	Butler, Lawrence, Mercer	3 hr
Jun 14, 4:27 PM EDT	Special Weather Statement	PBZ	Indiana	63 min
Jun 14, 4:34 PM EDT	Special Weather Statement	PBZ	Westmoreland	56 min
Jun 14, 5:13 PM EDT	Special Weather Statement	PBZ	Westmoreland	47 min
Jun 14, 5:24 PM EDT	Special Weather Statement	PBZ	Mercer	51 min
Jun 14, 5:29 PM EDT	Special Weather Statement	PBZ	Armstrong	46 min
Jun 14, 5:55 PM EDT	Special Weather Statement	PBZ	Butler	50 min
Jun 14, 6:02 PM EDT	Special Weather Statement	PBZ	Beaver	43 min
Jun 14, 6:07 PM EDT	Special Weather Statement	PBZ	Armstrong, Indiana	53 min
Jun 14, 6:45 PM EDT	Special Weather Statement	PBZ	Butler	45 min
Jun 14, 6:48 PM EDT	Special Weather Statement	PBZ	Butler	42 min
Jun 14, 6:58 PM EDT	Special Weather Statement	PBZ	Lawrence	47 min
Jun 14, 7:00 PM EDT	Areal Flood Advisory	PBZ	Butler	3 hr
Jun 14, 7:11 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Clarion, Venango	49 min
Jun 14, 7:24 PM EDT	Flash Flood Warning	PBZ	Armstrong	3 hr
Jun 14, 7:47 PM EDT	Special Weather Statement	PBZ	Forest	43 min
Jun 14, 2:50 PM EDT	Special Weather Statement	PBZ	Columbiana	40 min
Jun 14, 4:51 PM EDT	Special Weather Statement	PBZ	Monroe	24 min
Jun 14, 5:37 PM EDT	Severe Thunderstorm Warning	PBZ	Carroll, Columbiana, Jefferson	38 min
Jun 14, 7:31 PM EDT	Special Weather Statement	PBZ	Harrison	44 min

Nearby

Flash Flood Watches in Pennsylvania, 2015 Flash Flood Watches in Ohio, 2015 Flash Flood Watches in West Virginia, 2015 Every flash flood watch in 2015

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.