Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1994
Severe Thunderstorm Warning 95, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this severe thunderstorm warning at Jul 20, 1994, 8:09 PM EDT for Somerset County, Pennsylvania. It was in force for 66 min.
The area
The counties it named.
The facts
- Issued
- Jul 20, 1994, 8:09 PM EDT (00:09 UTC)
- Expired
- Jul 20, 1994, 9:15 PM EDT
- In force
- 66 min
- Issued by
- NWS Pittsburgh, PA
- Area
- Whole counties
County Somerset County, PA
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 00:00Z, 0.2 hours before the alert went out and 103 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
- 691 J/kg
- Mixed-layer CIN
- -20 J/kg
- Mixed-layer LCL
- 1778 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- -4 m²/s²
- 0-3 km storm-relative helicity
- 13 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this severe thunderstorm 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, 3 hours 19 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, 3 hours 16 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
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 1994Every severe thunderstorm 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.