Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1994
Severe Thunderstorm Warning 21, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this severe thunderstorm warning at May 1, 1994, 12:47 AM EDT for Armstrong County, Westmoreland County, Pennsylvania. It was in force for 73 min.
The area
The counties it named.
The facts
- Issued
- May 1, 1994, 12:47 AM EDT (04:47 UTC)
- Expired
- May 1, 1994, 2:00 AM EDT
- In force
- 73 min
- Issued by
- NWS Pittsburgh, PA
- Area
- Whole counties
Counties Armstrong County, PA, Westmoreland County, PA
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 00:00Z, 4.8 hours before the alert went out and 56 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
- 33 J/kg
- Mixed-layer CIN
- -69 J/kg
- Mixed-layer LCL
- 998 m above ground
- 0-6 km bulk shear
- 66 kt
- 0-1 km storm-relative helicity
- 65 m²/s²
- 0-3 km storm-relative helicity
- 61 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS1 KPIT 010453 SVRPBZ PAC005-031-129-010600- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PITTSBURGH PA 1247 AM EDT SUN MAY 1 1994 THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 200 AM EDT FOR THE FOLLOWING LOCATIONS... IN WEST PENNSYLVANIA ...ARMSTRONG COUNTY...CLARION COUNTY...WESTMORELAND COUNTY WEATHER RADAR INDICATED SEVERE THUNDERSTORMS MOVING THROUGH BUTLER AND ALLEGHENY COUNTIES. THESE STORMS WILL MOVE THROUGH WESTMORELAND...ARMSTRONG AND CLARION COUNTIES BETWEEN NOW AND 200 AM. THESE STORMS WILL ALSO PRODUCE HEAVY DOWNPOURS AND DEADLY LIGHTNING. 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. WWUS35KJKL -8
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, Apr 30, 11:12 PM EDT, 1 hour 35 minutes before
PAZ001>006-013>015-WVZ001-010400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH PA 1112 PM EDT SAT APR 30 1994 ...STRONG THUNDERSTORMS CONTINUE ACROSS WESTERN PENNSYLVANIA... AT 1105 PM DOPPLER RADAR SHOWED STRONG THUNDERSTORMS MOVING INTO WESTERN CLEARFIELD AND CAMBRIA COUNTIES. THESE STORMS WILL PRODUCE VERY HEAVY RAIN...STRONG GUSTY WINDS...DEADLY LIGHTNING AND SOME SMALL HAIL AS THEY MOVE THROUGH CLEARFIELD AND CAMBRIA COUNTIES BETWEEN 1115 PM AND MIDNIGHT. ANOTHER STRONG STORM WAS LOCATED JUST SOUTH OF LATROBE IN SOUTHEAST WESTMORELAND COUNTY. THIS STORM WILL TRACK THROUGH EASTERN WESTMORLAND COUNTY DURING THE NEXT HALF HOUR. OTHER SHOWERS AND THUNDERSTORMS WERE DEVELOPING ACROSS EASTERN OHIO BETWEEN AKRON AND ZANESVILLE. THESE STORMS WILL MOVE INTO PITTSBURGH AREA BETWEEN 1 AND 2 AM. IF YOUR CAUGHT OUTDOORS IN A THUNDERSTORM SEEK SHELTER INDOORS. STAY AWAY FROM WINDOWS AND AVOID USING ELECTRICAL APPLIANCES UNTIL THE STORM HAS PAST. LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. ROLINSKI
Special weather statement, Apr 30, 11:13 PM EDT, 1 hour 34 minutes before
PAZ001>006-013>015-WVZ001-010400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH PA 1112 PM EDT SAT APR 30 1994 ...STRONG THUNDERSTORMS CONTINUE ACROSS WESTERN PENNSYLVANIA... AT 1105 PM DOPPLER RADAR SHOWED STRONG THUNDERSTORMS MOVING INTO WESTERN CLEARFIELD AND CAMBRIA COUNTIES. THESE STORMS WILL PRODUCE VERY HEAVY RAIN...STRONG GUSTY WINDS...DEADLY LIGHTNING AND SOME SMALL HAIL AS THEY MOVE THROUGH CLEARFIELD AND CAMBRIA COUNTIES BETWEEN 1115 PM AND MIDNIGHT. ANOTHER STRONG STORM WAS LOCATED JUST SOUTH OF LATROBE IN SOUTHEAST WESTMORELAND COUNTY. THIS STORM WILL TRACK THROUGH EASTERN WESTMORLAND COUNTY DURING THE NEXT HALF HOUR. OTHER SHOWERS AND THUNDERSTORMS WERE DEVELOPING ACROSS EASTERN OHIO BETWEEN AKRON AND ZANESVILLE. THESE STORMS WILL MOVE INTO PITTSBURGH AREA BETWEEN 1 AND 2 AM. IF YOUR CAUGHT OUTDOORS IN A THUNDERSTORM SEEK SHELTER INDOORS. STAY AWAY FROM WINDOWS AND AVOID USING ELECTRICAL APPLIANCEPS UNTIL THE STORM HAS PAST. LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. ROLINSKI
Special weather statement, Apr 30, 11:16 PM EDT, 1 hour 31 minutes before
PAZ001>036-WVZ001-010400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH PA 1112 PM EDT SAT APR 30 1994 ...STRONG THUNDERSTORMS CONTINUE ACROSS WESTERN PENNSYLVANIA... AT 1105 PM DOPPLER RADAR SHOWED STRONG THUNDERSTORMS MOVING INTO WESTERN CLEARFIELD AND CAMBRIA COUNTIES. THESE STORMS WILL PRODUCE VERY HEAVY RAIN...STRONG GUSTY WINDS...DEADLY LIGHTNING AND SOME SMALL HAIL AS THEY MOVE THROUGH CLEARFIELD AND CAMBRIA COUNTIES BETWEEN 1115 PM AND MIDNIGHT. ANOTHER STRONG STORM WAS LOCATED JUST SOUTH OF LATROBE IN SOUTHEAST WESTMORELAND COUNTY. THIS STORM WILL TRACK THROUGH EASTERN WESTMORLAND COUNTY DURING THE NEXT HALF HOUR. OTHER SHOWERS AND THUNDERSTORMS WERE DEVELOPING ACROSS EASTERN OHIO BETWEEN AKRON AND ZANESVILLE. THESE STORMS WILL MOVE INTO PITTSBURGH AREA BETWEEN 1 AND 2 AM. IF YOUR CAUGHT OUTDOORS IN A THUNDERSTORM SEEK SHELTER INDOORS. STAY AWAY FROM WINDOWS AND AVOID USING ELECTRICAL APPLIANCES UNTTIL THE STORM HAS PAST. LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. ROLINSKI
Special weather statement, May 1, 12:01 AM EDT, 46 minutes before
PAZ001>036-WVZ001-010500- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH PA 1158 PM EDT TUE APR 26 1992 ...STRONG THUNDERSTORMS MOVING INTO WESTERN PENNSYLVANIA... AT 1155 PM DOPPLER RADAR SHOWED A LINE STRONG THUNDERSTORMS EXTENDING FROM JUST EAST OF YOUNGSTOWN OHIO IN MERCER COUNTY TO JUST WEST OF WHEELING TO JUST NORTH OF PARKERSBURG. THESE STORMS WILL CONTAIN VERY HEAVY RAIN...DEADLY LIGHTNING...GUSTY WINDS...AND POSSIBLY HAIL. THEY WILL MOVE INTO THE PITTSBURGH BEFORE 1 AM. AN ISOLATED STRONG STORM WAS LOCATED IN CLARION COUNTY. THIS STORM WILL MOVE INTO NORTHERN JEFFERSON AND ELK COUNTIES WITHIN THE NEXT HOUR. ALSO A FLOOD WATCH IS IN EFFECT FOR SMALL STREAMS AND CREEKS FOR BEDFORD ...FULTON...AND FRANKLIN COUNTIES UNTIL 10 AM SUNDAY MORNING. IF YOUR CAUGHT OUTDOORS IN A THUNDERSTORM SEEK SHELTER INDOORS. STAY AWAY FROM WINDOWS AND AVOID USING ELECTRICAL APPLIANCES UNTIL THE STORM HAS PAST. LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. ROLINSKI
The office that day
Everything else NWS Pittsburgh, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 30, 9:50 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Indiana | 55 min |
| Apr 30, 9:55 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 35 min |
| Apr 30, 10:27 PM EDT | Severe Thunderstorm Warning | PBZ | Jefferson | 48 min |
| Apr 30, 10:42 PM EDT | Severe Thunderstorm Warning | PBZ | Clearfield | 63 min |
| May 1, 12:23 AM EDT | Severe Thunderstorm Warning | PBZ | Butler | 52 min |
| May 1, 12:40 AM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 50 min |
| May 1, 12:47 AM EDT | Severe Thunderstorm Warning | PBZ | Clarion | 73 min |
| May 1, 1:22 AM EDT | Severe Thunderstorm Warning | PBZ | Indiana, Jefferson | 53 min |
| May 1, 2:00 AM EDT | Severe Thunderstorm Warning | PBZ | Cambria, Clearfield | 45 min |
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.