Alert archive / Pennsylvania / Flash Flood Warnings in 2019

Flash Flood Warning 98, NWS Pittsburgh, PA

August 2, 2019Fayette County, Westmoreland County, Pennsylvania

NWS Pittsburgh, PA issued this flash flood warning at Aug 2, 2019, 3:16 PM EDT for Fayette County, Westmoreland County, Pennsylvania. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Aug 2, 2019, 3:16 PM EDT (19:16 UTC)
Expired: Aug 2, 2019, 5:48 PM EDT
In force: 3 hr
Issued by: NWS Pittsburgh, PA
Area: Storm-based polygon
Flood severity: None

Counties Fayette County, PA, Westmoreland County, PA

The radar

The Pittsburgh radar (KPBZ), 73 km from the middle of the area, began a volume at 19:18 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 (KPIT), launched 12:00Z, 7.3 hours before the alert went out and 57 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: 36 J/kg
Mixed-layer CIN: -147 J/kg
Mixed-layer LCL: 1497 m above ground
0-6 km bulk shear: 4 kt
0-1 km storm-relative helicity: -2 m²/s²
0-3 km storm-relative helicity: 26 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 warning 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 warning went out at Aug 2, 1:48 PM EDT, 1 hour 28 minutes earlier.

Area forecast discussion, Aug 2, 1:48 PM EDT, 1 hour 28 minutes before

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Hazardous weather outlook, Aug 2, 3:14 AM EDT, 12 hours 2 minutes before

Hazardous Weather Outlook
National Weather Service Pittsburgh PA
314 AM EDT Fri Aug 2 2019

MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>023-
029-031-073>076-WVZ001>004-012-021-509>514-030715-
Garrett-Tuscarawas-Carroll-Columbiana-Coshocton-Harrison-
Jefferson OH-Muskingum-Guernsey-Belmont-Noble-Monroe-Mercer-Venango-
Forest-Lawrence-Butler-Clarion-Jefferson PA-Beaver-Allegheny-
Armstrong-Indiana-Washington-Greene-Westmoreland-Westmoreland Ridges-
Fayette-Fayette Ridges-Hancock-Brooke-Ohio-Marshall-Wetzel-Marion-
Monongalia-Ridges of Eastern Monongalia and Northwestern Preston-
Preston-Eastern Preston-Western Tucker-Eastern Tucker-
314 AM EDT Fri Aug 2 2019

This Hazardous Weather Outlook is for western Maryland, east
central Ohio, northwest Pennsylvania, southwest Pennsylvania, west
central Pennsylvania, western Pennsylvania, northern West Virginia
and northern panhandle of West Virginia.

.DAY ONE...Today and tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

In the hours before

Special weather statement, Aug 2, 1:33 PM EDT, 1 hour 43 minutes before

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Special weather statement, Aug 2, 1:42 PM EDT, 1 hour 34 minutes before

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Special weather statement, Aug 2, 1:50 PM EDT, 1 hour 26 minutes before

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Special weather statement, Aug 2, 2:08 PM EDT, 1 hour 8 minutes before

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Special weather statement, Aug 2, 2:29 PM EDT, 47 minutes before

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Special weather statement, Aug 2, 3:06 PM EDT, 10 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
Aug 2, 9:13 AM EDT	Special Weather Statement	PBZ	Indiana	32 min
Aug 2, 10:13 AM EDT	Special Weather Statement	PBZ	Indiana	47 min
Aug 2, 10:21 AM EDT	Special Weather Statement	PBZ	Jefferson	54 min
Aug 2, 10:37 AM EDT	Severe Thunderstorm Warning	PBZ	Indiana, Jefferson	38 min
Aug 2, 11:22 AM EDT	Areal Flood Advisory	PBZ	Jefferson	3 hr
Aug 2, 1:09 PM EDT	Special Weather Statement	PBZ	Indiana	36 min
Aug 2, 1:42 PM EDT	Special Weather Statement	PBZ	Westmoreland	33 min
Aug 2, 1:50 PM EDT	Special Weather Statement	PBZ	Indiana	40 min
Aug 2, 2:04 PM EDT	Areal Flood Advisory	PBZ	Indiana, Westmoreland	119 min
Aug 2, 2:08 PM EDT	Special Weather Statement	PBZ	Indiana	37 min
Aug 2, 2:14 PM EDT	Areal Flood Advisory	PBZ	Westmoreland	3 hr
Aug 2, 2:29 PM EDT	Special Weather Statement	PBZ	Somerset	31 min
Aug 2, 2:41 PM EDT	Areal Flood Advisory	PBZ	Indiana	82 min
Aug 2, 2:45 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette	30 min
Aug 2, 3:02 PM EDT	Areal Flood Advisory	PBZ	Fayette, Westmoreland	3 hr
Aug 2, 3:06 PM EDT	Special Weather Statement	PBZ	Westmoreland	39 min
Aug 2, 3:21 PM EDT	Severe Thunderstorm Warning	PBZ	Westmoreland	39 min
Aug 2, 3:46 PM EDT	Severe Thunderstorm Warning	PBZ	Greene, Washington	29 min
Aug 2, 4:14 PM EDT	Areal Flood Advisory	PBZ	Allegheny, Washington, Westmoreland	2 hr
Aug 2, 4:31 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Fayette, Washington, Westmoreland	44 min
Aug 2, 4:34 PM EDT	Flash Flood Warning	PBZ	Allegheny, Washington, Westmoreland	106 min
Aug 2, 4:47 PM EDT	Special Weather Statement	PBZ	Washington	28 min
Aug 2, 4:55 PM EDT	Special Weather Statement	PBZ	Allegheny	50 min
Aug 2, 5:13 PM EDT	Severe Thunderstorm Warning	PBZ	Washington	47 min
Aug 2, 5:16 PM EDT	Areal Flood Advisory	PBZ	Allegheny, Armstrong, Westmoreland	64 min
Aug 2, 5:47 PM EDT	Areal Flood Advisory	PBZ	Washington	91 min
Aug 2, 5:48 PM EDT	Special Weather Statement	PBZ	Butler	42 min
Aug 2, 5:55 PM EDT	Special Weather Statement	PBZ	Washington	50 min
Aug 2, 6:26 PM EDT	Special Weather Statement	PBZ	Fayette	34 min
Aug 2, 6:33 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette	27 min
Aug 2, 6:45 PM EDT	Flash Flood Warning	PBZ	Fayette, Greene	69 min
Aug 2, 1:50 PM EDT	Flash Flood Warning	PBZ	Preston	88 min
Aug 2, 4:50 PM EDT	Special Weather Statement	PBZ	Preston	40 min
Aug 2, 5:52 PM EDT	Areal Flood Advisory	PBZ	Monongalia, Preston	3 hr
Aug 2, 6:13 PM EDT	Special Weather Statement	PBZ	Monongalia	32 min

Nearby

Flash Flood Warnings in Pennsylvania, 2019 Every flash flood warning in 2019

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.