Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 4, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at May 1, 1997, 3:31 PM EDT for Dauphin County, Pennsylvania. It was in force for 29 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 1, 1997, 3:31 PM EDT (19:31 UTC)
- Expired
- May 1, 1997, 4:00 PM EDT
- In force
- 29 min
- Issued by
- NWS State College, PA
- Area
- Whole counties
County Dauphin County, PA
The nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 7.5 hours before the alert went out and 120 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 833 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 164 m²/s²
- 0-3 km storm-relative helicity
- 178 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 011930 RRA SVRCTP PAC043-012000- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE STATE COLLEGE PA 331 PM EDT THU MAY 1 1997 THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 400 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATIONS...... IN PENNSYLVANIA ...NORTHERN DAUPHIN COUNTY AT 330 PM RADAR INDICATED A SEVERE STORM JUST NORTHEAST OF HARRISBURG. THIS STORM CONTAINS LARGE HAIL AND DAMAGING WINDS. THE STORM IS MOVING NORTHEAST AT 40 MPH AND WILL BE NEAR NEAR LYKENS BY 345 PM. 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 1, 2:52 PM EDT, 39 minutes earlier.
Area forecast discussion, May 1, 2:52 PM EDT, 39 minutes before
CENTRAL PENNSYLVANIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 250 PM EDT THU MAY 1 1997 WATCHING A FEW TSTMS OVER NE PA BUT SO FAR NO INDICATION OF SVR. CURRENT SFC FRONT NEAR A HAR-IPT LINE. FRONT TO MOVE EAST OF PA BY 00Z. EARLIER TODAY WE HAD A RACE BETWEEN DRY AIR WORKING EAST AND GROWING INSTABILITY ACROSS CENTRAL AND EASTERN PA DUE TO HEATING. LOOKS LIKE DRY JUST BARELY WON FOR OUR FCST/A. HIGH PRESSURE TO MOVE INTO FCST/A TONIGHT. RAMSDIS SHOWS AN AREA OF LOW CLDS MOVING INTO NW PA ATTM. EXPECT THIS AREA OF CLD COVER TO SLIDE ACROSS N PA THIS EVENING THEN SKIES SHOULD CLEAR ACROSS MOST OF FCST/A BY MIDNIGHT. NXT SYS TO APPROACH AREA LATE FRIDAY. EXPECT HI CLDS TO INCR ACROSS FCST/A DURING THE DAY WITH LOW/MID LEVEL CLDS MOVING IN FRIDAY NIGHT. ETA MODEL FCSTING PRECIP TO MOVE INTO W PA AFTER MIDNIGHT FRIDAY NIGHT. POTENT SYS TO SLIDE INTO AREA ON SAT WITH STRONG 8H JET OF 65KT MOVING OUT OF GULF TO0WARD PA. PHL...WRKZFP LOOK GOOD...SHORT ON TIME. WINTHER
In the hours before
Special weather statement, May 1, 10:00 AM EDT, 5 hours 31 minutes before
PAZ004>006-010>012-017-024-033-012400- SPECIAL WEATHER STATEMENT - WIND ADVISORY NATIONAL WEATHER SERVICE STATE COLLEGE PA 1000 AM EDT THU MAY 1 1997 ...A WIND ADVISORY CONTINUES ACROSS ALL OF THE NORTHERN MOUNTAINS AND LAUREL HIGHLANDS TODAY... ...ADVISORY INFORMATION... THE WIND ADVISORY NOW INCLUDES THE FOLLOWING COUNTIES IN CENTRAL PENNSYLVANIA: WARREN... MCKEAN... POTTER... ELK... CAMERON... CLEARFIELD... CAMBRIA AND SOMERSET. ...WEATHER SYNOPSIS... A COLD FRONT HAS SWEPT ACROSS THE AREA TODAY...CAUSING SOUTHERLY WINDS TO SHIFT TO THE WEST. SUSTAINED WINDS OF 20 TO 30 MPH WILL PERSIST THROUGH THE DAY. WIND GUSTS UP TO 50 MPH ARE POSSIBLE...ESPECIALLY ACROSS THE THE HIGHER RIDGES. ...PRECAUTIONS... PEOPLE SHOULD SECURE LOOSE OUTSIDE OBJECTS. BE ALERT WHILE DRIVING SINCE WIRES AND TREE LIMBS MAY BE DOWNED BY THE GUSTY WINDS. IF YOU DRIVE A HIGH PROFILE VEHICLE...KEEP A FIRM GRIP ON THE WHEEL. STAY TUNED TO NOAA WEATHER RADIO...OR YOUR FAVORITE LOCAL TELEVISION... RADIO OR CABLE TV STATION FOR THE LATEST FORECASTS AND UPDATES. OSTUNO
Special weather statement, May 1, 10:02 AM EDT, 5 hours 29 minutes before
PAZ004>006-010>012-017-024-033-012400- SPECIAL WEATHER STATEMENT - WIND ADVISORY NATIONAL WEATHER SERVICE STATE COLLEGE PA 1000 AM EDT THU MAY 1 1997 ...A WIND ADVISORY CONTINUES ACROSS ALL OF THE NORTHERN MOUNTAINS AND LAUREL HIGHLANDS TODAY... ...ADVISORY INFORMATION... THE WIND ADVISORY NOW INCLUDES THE FOLLOWING COUNTIES IN CENTRAL PENNSYLVANIA: WARREN... MCKEAN... POTTER... ELK... CAMERON... CLEARFIELD... CAMBRIA AND SOMERSET. ...WEATHER SYNOPSIS... A COLD FRONT HAS SWEPT ACROSS THE AREA TODAY...CAUSING SOUTHERLY WINDS TO SHIFT TO THE WEST. SUSTAINED WINDS OF 20 TO 30 MPH WILL PERSIST THROUGH THE DAY. WIND GUSTS UP TO 50 MPH ARE POSSIBLE...ESPECIALLY ACROSS THE THE HIGHER RIDGES. ...PRECAUTIONS... PEOPLE SHOULD SECURE LOOSE OUTSIDE OBJECTS. BE ALERT WHILE DRIVING SINCE WIRES AND TREE LIMBS MAY BE DOWNED BY THE GUSTY WINDS. IF YOU DRIVE A HIGH PROFILE VEHICLE...KEEP A FIRM GRIP ON THE WHEEL. STAY TUNED TO NOAnA WEATHER RADIO...OR YOUR FAVORITE LOCAL TELEVISION... RADIO OR CABLE TV STATION FOR THE LATEST FORECASTS AND UPDATES. OSTUNO
Special weather statement, May 1, 11:23 AM EDT, 4 hours 8 minutes before
PAZ041>042-046-051>053-057>059-065>066-012400- SEVERE WEATHER OUTLOOK FOR PENNSYLVANIA NATIONAL WEATHER SERVICE STATE COLLEGE PA 1125 AM EDT THU MAY 1 1997 THE STORM PREDICTION CENTER SAYS THERE IS A SLIGHT RISK OF SEVERE WEATHER ACROSS PARTS OF EASTERN PENNSYLVANIA THIS AFTERNOON. THIS INCLUDES THE CITIES AND SURROUNDING AREAS EAST OF A LINE FROM WILLIAMSPORT TO HARRISBURG. A COLD FRONT WILL MOVE ACROSS EASTERN PENNSYLVANIA THIS AFTERNOON. SHO0WERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP ALONG AND AHEAD THE FRONT THIS AFTERNOON. SOME OF THESE STORMS MAY BECOME SEVERE. SKYWARN SPOTTER NETWORKS MAY NEED TO BE ACTIVATED THIS AFTERNOON. OSTUNO
Special weather statement, May 1, 11:25 AM EDT, 4 hours 6 minutes before
PAZ041>042-046-051>053-057>059-065>066-012400- SEVERE WEATHER OUTLOOK FOR PENNSYLVANIA NATIONAL WEATHER SERVICE STATE COLLEGE PA 1125 AM EDT THU MAY 1 1997 THE STORM PREDICTION CENTER SAYS THERE IS A SLIGHT RISK OF SEVERE WEATHER ACROSS PARTS OF EASTERN PENNSYLVANIA THIS AFTERNOON. THIS INCLUDES THE CITIES AND SURROUNDING AREAS EAST OF A LINE FROM WILLIAMSPORT TO HARRISBURG. A COLD FRONT WILL MOVE ACROSS EASTERN PENNSYLVANIA THIS AFTERNOON. SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP ALONG AND AHEAD THE FRONT THIS AFTERNOON. SOME OF THESE STORMS MAY BECOME SEVERE. SKYWARN SPOTTER NETWORKS MAY NEED TO BE ACTIVATED THIS AFTERNOON. OSTUNO
The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 1, 3:48 PM EDT | Severe Thunderstorm Warning | CTP | Schuylkill | 57 min |
| May 1, 4:09 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 66 min |
| May 1, 4:22 PM EDT | Severe Thunderstorm Warning | CTP | York | 68 min |
| May 1, 4:41 PM EDT | Tornado Warning | CTP | Schuylkill | 49 min |
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.