Alert archive / Ohio / Flash Flood Watches in 2014

Flash Flood Watch 2, NWS Pittsburgh, PA

May 28, 20146 counties in Pennsylvania; 11 counties in Ohio; 6 counties in West Virginia

NWS Pittsburgh, PA issued this flash flood watch at May 28, 2014, 4:19 AM EDT for 6 counties in Pennsylvania; 11 counties in Ohio; 6 counties in West Virginia. It took effect at May 28, 2014, 2:00 PM EDT. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued: May 28, 2014, 4:19 AM EDT (08:19 UTC)
In effect from: May 28, 2014, 2:00 PM EDT
Expired: May 28, 2014, 9:04 PM EDT
In force: 7 hr
Issued by: NWS Pittsburgh, PA
Flood severity: None

All 23 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, Beaver 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), 62 km from the middle of the area, began a volume at 08:22 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 00:00Z, 8.3 hours before the alert went out and 62 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: 874 J/kg
Mixed-layer CIN: -33 J/kg
Mixed-layer LCL: 984 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 189 m²/s²
0-3 km storm-relative helicity: 209 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 6.3

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 May 28, 4:19 AM EDT, 0 minutes earlier.

Area forecast discussion, May 28, 4:19 AM EDT, 0 minutes before

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Hazardous weather outlook, May 28, 4:19 AM EDT, 0 minutes before

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In the hours before

Local storm report, May 28, 12:21 AM EDT, 3 hours 58 minutes before

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Local storm report, May 28, 12:26 AM EDT, 3 hours 53 minutes before

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Local storm report, May 28, 12:46 AM EDT, 3 hours 33 minutes before

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Special weather statement, May 28, 12:52 AM EDT, 3 hours 27 minutes before

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Local storm report, May 28, 12:53 AM EDT, 3 hours 26 minutes before

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Local storm report, May 28, 1:06 AM EDT, 3 hours 13 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
May 27, 8:09 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Washington	51 min
May 27, 8:19 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Westmoreland	41 min
May 27, 8:52 PM EDT	Special Weather Statement	PBZ	Westmoreland	38 min
May 27, 9:07 PM EDT	Areal Flood Warning	PBZ	Allegheny, Beaver	6 hr
May 27, 9:42 PM EDT	Special Weather Statement	PBZ	Beaver	48 min
May 27, 9:49 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Beaver, Washington	26 min
May 27, 10:19 PM EDT	Special Weather Statement	PBZ	Allegheny	41 min
May 27, 11:27 PM EDT	Areal Flood Warning	PBZ	Fayette, Washington, Westmoreland	3 hr
May 27, 11:32 PM EDT	Special Weather Statement	PBZ	Fayette	58 min
May 27, 11:37 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Fayette, Washington, Westmoreland	38 min
May 28, 12:38 AM EDT	Areal Flood Warning	PBZ	Washington	4 hr
May 28, 5:02 PM EDT	Severe Thunderstorm Warning	PBZ	Washington	28 min
May 28, 5:22 PM EDT	Areal Flood Warning	PBZ	Washington	3 hr
May 28, 5:53 PM EDT	Special Weather Statement	PBZ	Fayette	52 min
May 28, 6:57 PM EDT	Areal Flood Advisory	PBZ	Westmoreland	3 hr
May 28, 7:38 PM EDT	Areal Flood Warning	PBZ	Westmoreland	3 hr
May 28, 2:38 PM EDT	Flash Flood Warning	PBZ	Coshocton, Muskingum	3 hr
May 28, 3:17 PM EDT	Special Weather Statement	PBZ	Monroe	58 min
May 28, 3:24 PM EDT	Severe Thunderstorm Warning	PBZ	Monroe	51 min
May 28, 3:45 PM EDT	Special Weather Statement	PBZ	Carroll, Tuscarawas	45 min
May 28, 4:25 PM EDT	Areal Flood Warning	PBZ	Coshocton, Tuscarawas	3 hr
May 28, 2:40 PM EDT	Special Weather Statement	PBZ	Marshall	50 min
May 28, 2:49 PM EDT	Special Weather Statement	PBZ	Marshall	26 min
May 28, 4:13 PM EDT	Special Weather Statement	PBZ	Marion	32 min
May 28, 4:49 PM EDT	Areal Flood Advisory	PBZ	Marion	3 hr

Nearby

Flash Flood Watches in Ohio, 2014 Flash Flood Watches in Pennsylvania, 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.