Alert archive / Ohio / Flash Flood Watches in 2015

Flash Flood Watch 3, NWS Pittsburgh, PA

June 19, 20155 counties in Pennsylvania; 7 counties in Ohio; 6 counties in West Virginia

NWS Pittsburgh, PA issued this flash flood watch at Jun 19, 2015, 5:59 PM EDT for 5 counties in Pennsylvania; 7 counties in Ohio; 6 counties in West Virginia. It took effect at Jun 20, 2015, 2:00 PM EDT. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued: Jun 19, 2015, 5:59 PM EDT (21:59 UTC)
In effect from: Jun 20, 2015, 2:00 PM EDT
Expired: Jun 20, 2015, 11:02 PM EDT
In force: 9 hr
Issued by: NWS Pittsburgh, PA
Flood severity: None

Counties Belmont County, OH, Guernsey County, OH, Harrison County, OH, Jefferson County, OH, Monroe County, OH, Muskingum County, OH, Noble County, OH, Allegheny County, PA, Fayette County, PA, Greene 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), 65 km from the middle of the area, began a volume at 22:02 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

Cncnati-Daytn, OH (KILN), launched 12:00Z, 10.0 hours before the alert went out and 278 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1016 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 76 m²/s²
0-3 km storm-relative helicity: 41 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 19, 2:49 PM EDT, 3 hours 10 minutes earlier.

Area forecast discussion, Jun 19, 2:49 PM EDT, 3 hours 10 minutes before

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Hazardous weather outlook, Jun 19, 2:50 PM EDT, 3 hours 9 minutes before

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In the hours before

Local storm report, Jun 19, 3:08 PM EDT, 2 hours 51 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 18, 8:10 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Beaver, Butler, Lawrence, Washington	50 min
Jun 18, 8:49 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Armstrong, Beaver, Butler, Washington, Westmoreland	56 min
Jun 18, 9:21 PM EDT	Severe Thunderstorm Warning	PBZ	Beaver, Washington	54 min
Jun 18, 9:24 PM EDT	Severe Thunderstorm Warning	PBZ	Greene, Washington	39 min
Jun 18, 9:25 PM EDT	Special Weather Statement	PBZ	Venango	35 min
Jun 18, 9:35 PM EDT	Flash Flood Warning	PBZ	Allegheny, Beaver, Washington, Westmoreland	4 hr
Jun 18, 9:35 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Fayette, Washington, Westmoreland	40 min
Jun 18, 10:06 PM EDT	Special Weather Statement	PBZ	Allegheny, Beaver, Washington	24 min
Jun 18, 10:18 PM EDT	Special Weather Statement	PBZ	Fayette	12 min
Jun 18, 10:20 PM EDT	Special Weather Statement	PBZ	Allegheny, Beaver, Washington	10 min
Jun 18, 11:39 PM EDT	Special Weather Statement	PBZ	Venango	51 min
Jun 18, 11:59 PM EDT	Areal Flood Advisory	PBZ	Clarion, Forest, Venango	2 hr
Jun 19, 12:05 AM EDT	Flash Flood Warning	PBZ	Clarion, Forest, Venango	3 hr
Jun 18, 8:23 PM EDT	Special Weather Statement	PBZ	Carroll, Columbiana, Jefferson, Tuscarawas	52 min
Jun 18, 9:46 PM EDT	Special Weather Statement	PBZ	Preston	44 min
Jun 18, 9:48 PM EDT	Special Weather Statement	PBZ	Preston	42 min

Nearby

Flash Flood Watches in Ohio, 2015 Flash Flood Watches in West Virginia, 2015 Flash Flood Watches in Pennsylvania, 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.