Alert archive / Pennsylvania / Flash Flood Warnings in 1994
Flash Flood Warning 39, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this flash flood warning at Jul 20, 1994, 5:25 PM EDT for Cambria County, Somerset County, Pennsylvania. It was in force for 2 hr.
The area
The counties it named.
The facts
- Issued
- Jul 20, 1994, 5:25 PM EDT (21:25 UTC)
- Expired
- Jul 20, 1994, 7:30 PM EDT
- In force
- 2 hr
- Issued by
- NWS Pittsburgh, PA
- Area
- Whole counties
Counties Cambria County, PA, Somerset County, PA
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 12:00Z, 9.4 hours before the alert went out and 106 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
- 777 J/kg
- Mixed-layer CIN
- -52 J/kg
- Mixed-layer LCL
- 1108 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 27 m²/s²
- 0-3 km storm-relative helicity
- 24 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KPIT 202124 FFWPIT PAC021-111-202330- BULLETIN - EBS ACTIVATION REQUESTED SEVERE THUNDERSTORM AND FLASH FLOOD WARNING NATIONAL WEATHER SERVICE PITTSBURGH PA 525 PM EDT WED JUL 20 1994 THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A SEVERE THUNDERSTORM AND FLASH FLOOD WARNING EFFECTIVE UNTIL 730 PM EDT FOR THE FOLLOWING LOCATIONS... IN WEST PENNSYLVANIA ...CAMBRIA COUNTY...SOMERSET COUNTY AT 520 PM DOPPLER WEATHER RADAR SHOWED SEVERE THUNDERSTORMS WITH HEAVY RAIN OVER SOMERSET COUNTY NORTH OF THE TOWN OF SOMERSET AND OVER CAMBRIA COUNTY NEAR THE JOHNSTOWN AIRPORT. THE STORMS WERE NEARLY STATIONARY. DIME SIZE HAIL WAS REPORTED AT GEISTOWN IN CAMBRIA COUNTY. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DON'T DRIVE INTO( AREAS WHERE WATER COVERS THE ROAD. &
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, Jul 20, 4:50 PM EDT, 35 minutes before
PAZ017-018-024-025-033-202300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH PA 450 PM EDT WED JUL 20 1994 ...STRONG THUNDERSTORMS DEVELOPING ACROSS THE SOUTH CENTRAL AND LAUREL MOUNTAINS OF PENNSYLVANIA... AT 445 PM DOPPLER WEATHER RADAR INDICATED STRONG THUNDERSTORMS DEVELOPING ALONG THE SOUTH CENTRAL AND LAUREL MOUNTAIN RIDGES FROM NORTHERN CENTRE COUNTY NEAR BELLEFONTE...SOUTHWEST THROUGH PHILIPSBURG...CRESSON...EAST OF JOHNSTOWN AND INTO SOMERSET COUNTY. THESE THUNDERSTORMS CONTAINED HEAVY RAINS AND FREQUENT CLOUD TO GROUND LIGHTNING. RADAR ESTIMATED THAT THE HEAVIEST RAIN WAS FALLING ALONG THE CAMBRIA-BLAIR COUNTY LINE...SOUTH OF CRESSON. THE HEAVY DOWNPOURS MAY CAUSE RAPID RISES ON BEAR ROCK RUN IN EASTERN CAMBRIA COUNTY WHICH FLOWS INTO THE TOWN OF LILLY. STAY TUNED TO NOAA WEATHER RADIO FOR FURTHER UPDATES. REED/DRZAL/REHAK/WAGNER
Special weather statement, Jul 20, 4:53 PM EDT, 32 minutes before
PAZ017-018-024-025-033-202300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH PA 450 PM EDT WED JUL 20 1994 ...STRONG THUNDERSTORMS DEVELOPING ACROSS THE SOUTH CENTRAL AND LAUREL MOUNTAINS OF PENNSYLVANIA... AT 445 PM DOPPLER WEATHER RADAR INDICATED STRONG THUNDERSTORMS DEVELOPING ALONG THE SOUTH CENTRAL AND LAUREL MOUNTAIN RIDGES FROM NORTHERN CENTRE COUNTY NEAR BELLEFONTE...SOUTHWEST THROUGH PHILIPSBURG...CRESSON...EAST OF JOHNSTOWN AND INTO SOMERSET COUNTY. THESE THUNDERSTORMS CONTAINED HEAVY RAINS AND FREQUENT CLOUD TO GROUND LIGHTNING. RADAR ESTIMATED THAT THE HEAVIEST RAIN WAS FALLING ALONG THE CAMBRIA-BLAIR COUNTY LINE...SOUTH OF CRESSON. THE HEAVY DOWNPOURS MAY CAUSE RAPID RISES ON BEAR ROCK RUN IN EASTERN CAMBRIA COUNTY WHICH FLOWS INTO THE TOWN OF LILLY. STAY TUNED TO NOAA WEATHER RADIO FOR FURTHER UPDATES. REED/DRZAL/REHAK/WAGNER
The office that day
Everything else NWS Pittsburgh, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 20, 7:30 PM EDT | Flash Flood Warning | PBZ | Bedford | 2 hr |
Nearby
Flash Flood Warnings in Pennsylvania, 1994Every flash flood warning in 1994
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.