Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1996
Severe Thunderstorm Warning 116, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at Jun 18, 1996, 6:32 PM EDT for Somerset County, Pennsylvania. It was in force for 58 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jun 18, 1996, 6:32 PM EDT (22:32 UTC)
- Expired
- Jun 18, 1996, 7:30 PM EDT
- In force
- 58 min
- Issued by
- NWS State College, PA
- Area
- Whole counties
County Somerset County, PA
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 12:00Z, 10.5 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
- 496 J/kg
- Mixed-layer CIN
- -35 J/kg
- Mixed-layer LCL
- 1096 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 113 m²/s²
- 0-3 km storm-relative helicity
- 132 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.5
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.
NWS State College, PA wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 18, 1:38 PM EDT, 4 hours 54 minutes earlier.
Area forecast discussion, Jun 18, 1:38 PM EDT, 4 hours 54 minutes before
CENTRAL PENNSYLVANIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 140 PM EDT TUE JUN 18 1996 ...DISCUSSION... VERY QUICK DISCUSSION AS WE ARE JUST RECOVERING FROM BIG TIME EQUIP PROBS AND STILL TRYING TO CATCH UP. LAST NIGHT'S CONVECTION SEEMS TO HAVE CAUSED SFC BOUNDARY TO SETTLE OVER SRN PART OF REGION. THIS SHOWS UP IN ADAP SSL/SSC/STA PRODUCTS. BOUNDARY SEEMS TO BE SOUTH OF MOST OF CTP CWA WITH 80S AND HUMID OVER SWRN SECTIONS AND COOLER CLAMMY WX MOST OF THE REST OF THE AREA. SEEMS TO BE SOME BOUNDARY ORIENTED NE TO SW OVER OHIO VALLEY WHERE SUNSHINE IS MORE PLENTIFUL AND CONVECTION IS FIRING. QUESTION IS WHERE TO PLACE AXIS OF HEAVIEST PRECIP? HAS ALREADY RAINED ALL DAY UP NORTH AND STNRY BOUNDARY WILL LIKELY CONTINUE THE PRECIP GOING WELL INTO THE EVENING. CONCERN IS THAT PRECIP WILL BECOME MORE CONVECTIVE THUS LOCALLY HEAVY. MODELS MAINTAIN JET ENTRANCE REGION JUST TO OUR NORTH AND EAST THRU MOST OF PROG CYCLE. LOWER BRANCH OF THIS THERMALLY DIRECT TRANSVERSE CIRCULATION HELPS SUPPORT LOW LEVEL BOUNDARY MOVING ONLY SLOWLY ALLOWING IT TO ACT AS LOW LEVEL CONVERGENCE ZONE THRU AT LEAST MUCH OF WED. HAVING LIMITED DATA TO WORK MAKES SUGGESTING A BETTER PLACE FOR POSSIBLE FFA EXTENSION OR REFINEMENT DIFFICULT. WILL GO ALONG WITH WFO DECISIONS ON THIS SUBJECT. LA CORTE
In the hours before
Special weather statement, Jun 18, 1:51 PM EDT, 4 hours 41 minutes before
PAZ004>006-010>012-017>019-024>028-033>036-037-041-042-045-046- 049>053-056>059-063>066-112300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE STATE COLLEGE PA 150 PM EDT TUE JUN 18 1996 THE STORM PREDICTION CENTER IN KANSAS CITY HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR A LARGE PORTION OF WESTERN PENNSYLVANIA UNTIL 800 PM THIS EVENING. THE FOLLOWING COUNTIES ARE INCLUDED IN THE WATCH AREA: ...CAMERON... CENTRE... CLINTON... CLEARFIELD... CAMBRIA... ELK AND SOMERSET A FRONT STALLED ACROSS PENNSYLVANIA AND OHIO IS FOCUSING THUNDERSTORM ACTIVITY OVER WESTERN PENNSYLVANIA AND OHIO. THE AIRMASS SOUTH OF THE FRONT IS VERY WARM AND UNSTABLE AND THUNDERSTORMS ARE EXPECTED TO INCREASE AND INTENSIFY OVER THE REGION. A FEW OF THESE THUNDERSTORMS WILL LIKELY PRODUCE DAMAGING WIND GUSTS AND POSSIBLY LARGE HAIL. HEAVY DOWNPOURS ARE ALSO LIKELY. SKYWARN SPOTTER NETWORKS MAY NEED TO BE ACTIVATED THIS AFTERNOON AND EVENING. HEA D/LA CORTE
The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 17, 8:00 PM EDT | Flash Flood Warning | CTP | Lancaster, Lebanon | 3 hr |
| Jun 18, 4:40 PM EDT | Severe Thunderstorm Warning | CTP | Cambria | 65 min |
| Jun 18, 5:49 PM EDT | Flash Flood Warning | CTP | Cambria, Somerset | 4 hr |
| Jun 18, 6:36 PM EDT | Severe Thunderstorm Warning | CTP | Bedford | 69 min |
| Jun 18, 6:52 PM EDT | Flash Flood Warning | CTP | Bedford | 4 hr |
| Jun 18, 7:11 PM EDT | Flash Flood Warning | CTP | Adams | 3 hr |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 1996Every severe thunderstorm warning in 1996
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.