Alert archive / Pennsylvania / Flash Flood Warnings in 1990
Flash Flood Warning 11, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this flash flood warning at Jun 14, 1990, 11:09 PM EDT for Fayette County, Pennsylvania. It was in force for 5 hr.
The area
The counties it named.
The facts
- Issued
- Jun 14, 1990, 11:09 PM EDT (03:09 UTC)
- Expired
- Jun 15, 1990, 4:15 AM EDT
- In force
- 5 hr
- Issued by
- NWS Pittsburgh, PA
- Area
- Whole counties
County Fayette County, PA
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 00:00Z, 3.2 hours before the alert went out and 67 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.
- Mixed-layer CAPE
- 567 J/kg
- Mixed-layer CIN
- -19 J/kg
- Mixed-layer LCL
- 1165 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- -38 m²/s²
- 0-3 km storm-relative helicity
- -6 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KPIT 150309 FFWPIT PAC051-150615- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE PITTSBURGH PA 1109 PM EDT THU JUN 14 1990 THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 215 AM EDT FOR THE FOLLOWING LOCATION... IN WEST PENNSYLVANIA ...FAYETTE COUNTY NATIONAL WEATHER SERVICE RADAR AT 1105 PM INDICATED TORRENTIAL DOWNPOURS OCCURRING IN FAYETTE COUNTY. THIS WILL CAUSE STREAMS AND CREEKS TO OVERFLOW THEIR BANKS AS WELL AS CAUSE ROAD FLOODING. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED...ACT QUICKLY. MOVE UP TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
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.
In the hours before
Special weather statement, Jun 14, 8:09 PM EDT, 3 hours before
PAZ001>006-013>015-WVZ001-150400- SPECIAL WEATHER STATEMENT AND WEATHER RADAR SUMMARY NATIONAL WEATHER SERVICE PITTSBURGH PA 810 PM EDT THU JUN 14 1990 ...SEVERE THUNDERSTORM WARNING FOR ALLEGHENY COUNTY UNTIL 900 PM... ...SEVERE THUNDERSTORM WARNING FOR BEAVER COUNTY UNTIL 845 PM... ...SEVERE THUNDERSTORM WARNING FOR WASHINGTON COUNTY AND BROOKE COUNTIES UNTIL 830 PM... AT 810 PM WEATHER RADAR INDICATED A NUMEROUS SEVERE THUNDERSTORMS OVER THE SOUTHWESTERN PENNSYLVANIA AREA AND THE NORTHERN WEST VIRGINIA PANHANDLE. ONE SEVERE STORM WAS IN SOUTHEASTERN BEAVER COUNTY...JUST ENTERING NORTHWESTERN ALLEGHENY COUNTY NEAR THE GREATER PITTSBURGH AIRPORT. THIS STORM WILL MOVE INTO THE CITY OF PITTSBURGH BETWEEN 815 AND 830 PM. EXPECT DAMAGING WINDS...DANGEROUS LIGHTNING...HAIL AND VERY HEAVY RAINS AS IT MOVES THROUGH. DRIVERS ON THE PENNSYLVANIA TURNPIKE...INTERSTATE 70....79 AND THE PARKWAY IN THE PITTSBURGH METROPOLITAIN AREA WILL ENCOUNTER SEVERE WEATHER. SLOW DOWN WHEN ENCOUNTERING HEAVY RAINS. ANOTHER SEVERE THUNDERSTORM WAS NEAR THE BORDER OF BROOKE AND WASHINGTON COUNTY BETWEEN WELLSBURG AND AVELLA. IF DANGEROUS WEATHER APPROACHES...MOVE INDOORS AT ONCE. c HEAVY RAINS CAN CAUSE RAPID RISES IN STREAM AND CREEKS. IF YOU ARE BOATING AND SEE SKIES DARKENING...MOVE TO SHORE AT ONCE.
Special weather statement, Jun 14, 8:40 PM EDT, 2 hours 29 minutes before
PAZ001>006-013>015-WVZ001-150500- SPECIAL WEATHER STATEMENT AND WEATHER RADAR SUMMARY NATIONAL WEATHER SERVICE PITTSBURGH PA 835 PM EDT THU JUN 14 1990 ...SEVERE THUNDERSTORM WARNING FOR ALLEGHENY COUNTY UNTIL 900 PM... ...SEVERE THUNDERSTORM WARNING FOR BEAVER COUNTY UNTIL 845 PM... ...SEVERE THUNDERSTORM WARNING EXPIRED FOR WASHINGTON COUNTY AND BROOKE COUNTIES... AT 835 PM WEATHER RADAR INDICATED SEVERE THUNDERSTORMS OVER BEAVER AND ALLEGHENY COUNTIES. THE STRONGEST STORM IN PENNSYLVANIA WAS IN THE EASTERN SUBURBS OF PITTSBURGH NEAR PENN HILLS. IN THE NORTHERN WEST VIRGINIA PANHANDLE...THE MOST POTENT STORM WAS BETWEEN WEST WEST LIBERTY AND WELLSBURG. THESE STORMS ARE BRINGING VERY HEAVY DOWNPOURS...AS WELL AS DAMAGING WINDS AND DANGEROUS LIGHTNING. THE THUNDERSTORMS HAVE WEAKEN SLIGHTLY WILL STILL PRODUCE STRONG WINDS AND HAIL. IN ADDITION...HEAVY RAINS WILL CONTINUE FOR THE NEXT HOUR OR SO OVER MANY AREAS IN SOUTHWESTERN PENNSYLVANIA AND THE NORTHERN PANHANDLE OF WEST VIRGINIA. REMEMBER...HEAVY RAINS CAN CAUSE RAPID RISES IN STREAM AND CREEKS. IN ADDITION...HEAVY THUNDERSTORM RAINS CAN CAUSE FLOODING OF ROADWAYS AND POOR DRAINAGE AREAS TOO. IF YOU LIVE NEAR A STREAM OF CREEK...KEEP ALERT FOR RISES IF HEAVY RAINS PERSIST OVER YOUR AREA. PALKO/STAIRS/HIGGINS/R. SMITH/DRAKE/KOHLHAGEN
The office that day
Everything else NWS Pittsburgh, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 14, 9:08 PM EDT | Flash Flood Warning | PBZ | Allegheny | 3 hr |
| Jun 14, 11:29 PM EDT | Flash Flood Warning | PBZ | Allegheny | 5 hr |
| Jun 15, 4:00 AM EDT | Flash Flood Warning | PBZ | Clearfield | 4 hr |
| Jun 15, 4:00 AM EDT | Flash Flood Warning | PBZ | Jefferson | 2 hr |
Nearby
Flash Flood Warnings in Pennsylvania, 1990Every flash flood warning in 1990
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.