Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 29, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at May 15, 1997, 12:51 AM EDT for Somerset County, Pennsylvania. It was in force for 69 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
- May 15, 1997, 12:51 AM EDT (04:51 UTC)
- Expired
- May 15, 1997, 2:00 AM EDT
- In force
- 69 min
- Issued by
- NWS State College, PA
- Area
- Whole counties
County Somerset County, PA
The radar
The Pittsburgh radar (KPBZ), 119 km from the middle of the area, began a volume at 04:48 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 00:00Z, 4.9 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
- 23 J/kg
- Mixed-layer CIN
- -22 J/kg
- Mixed-layer LCL
- 1198 m above ground
- 0-6 km bulk shear
- 65 kt
- 0-1 km storm-relative helicity
- 53 m²/s²
- 0-3 km storm-relative helicity
- 103 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 KCTP 150451 RRA SVRCTP PAC111-150600- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE STATE COLLEGE PA 1251 AM EDT THU MAY 15 1997 THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 200 AM EDT FOR PEOPLE IN THE FOLLOWING LOCATIONS...... IN PENNSYLVANIA ...SOUTHERN SOMERSET COUNTY AT 1245 AM...RADAR INDICATED A CLUSTER OF SEVERE STORMS JUST ENTERING SOUTHWESTERN SOMERSET COUNTY NEAR CONFLUENCE. THE STORMS ARE MOVING EAST AT 35 MPH...AND WILL BE JUST EAST OF PLEASANT UNION BY 130 AM. THESE STORMS LIKELY CONTAIN LARGE HAIL AND DAMAGING WINDS. 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. MARTIN
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 May 14, 8:37 PM EDT, 4 hours 14 minutes earlier.
Area forecast discussion, May 14, 8:37 PM EDT, 4 hours 14 minutes before
CENTRAL PENNSYLVANIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 835 PM EDT WED MAY 14 1997 ***SUGGESTIONS*** .PIT...TONIGHT...MIGHT MENTION CHC FOR RUMBLE OF THUNDER OVR LAURELS AS DYING CONVECTION APPROACHES TOWARD MIDNIGHT. THURSDAY...WUD MENTION PARTIAL SUNSHINE EARLY ESPECIALLY S AND E OF MTNS. ALSO...WUD RAISE HI TEMPS TO SLIGHTLY ABV MOS VALUES. .PHL...TONIGHT...WUD LOWER POPS TO CHC...ESPECIALLY IPT NORTHWARD. ***DISCUSSION*** KILN AND KRLX 88DS SHOWING TSRA FIRING IN VICINITY OF WARM FRONT OVR OHIO AND WVA...WHERE DWPTS HAVE RISEN TO THE MID 50S. 15Z MESO ETA TRACKS SFC LO ACROSS NW PA LATE TONIGHT. HOWEVER MODELS KEEP ATMOS OVR CPA RELATIVELY STABLE...WHICH SEEMS LIKELY GIVEN CURRENT SFC DWPTS MAINLY IN THE U30S ACROSS CPA. WEAKENING LL JET AND ASSOCIATED LOBE OF WAA WILL PASS OVR AREA BTWN 03Z AND 08Z...TOUCHING OFF SCT SHRA...MAINLY SOUTHERN PA. FEEL LAUREL HIGHLANDS IS THE ONLY AREA THAT WARRANTS A MENTION OF TSRA OVERNIGHT AS MODELS SHOW HIGHEST THTE AIR W OF MTNS. THURSDAY...CDFRT PUSHES E OF ENTIRE CWA BY LATE MORNING. ATMOS DRYS OUT CONSIDERABLY ABV 850 MB. MODEL SOUNDINGS INDICATE PARTIAL SUNSHINE TO START THE DAY...FOLLOWED BY A BUILD UP OF CU DURING LATE MORNING...AS COLD AIR WORKS IN ALOFT AHEAD OF APPROACHING UPPER LVL PV MAX. WUD LIMIT MENTION OF SCT -SHRA TO LAURELS AND NW MTNS...GIVEN THE BENEFIT OF UPSLOPE FLOW. FEEL HI TEMPS WILL BE NEAR OR SLIGHTLY ABV MOS VALUES.a..GIVEN BOUNDARY LYR TEMPS FM 15Z MESO ETA. FITZGERALD
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 1997Every severe thunderstorm warning in 1997
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; radar from the NEXRAD Level II archive.