Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 81, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at Jul 9, 1997, 1:10 PM EDT for Bedford County, Pennsylvania. It was in force for 65 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jul 9, 1997, 1:10 PM EDT (17:10 UTC)
- Expired
- Jul 9, 1997, 2:15 PM EDT
- In force
- 65 min
- Issued by
- NWS State College, PA
- Area
- Whole counties
County Bedford County, PA
The radar
The State College radar (KCCX), 110 km from the middle of the area, began a volume at 17:11 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 9, 1:15 PM EDT | Hail 0.75 | Riddlesburg, PA |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 12:00Z, 5.2 hours before the alert went out and 144 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
- 26 J/kg
- Mixed-layer CIN
- -199 J/kg
- Mixed-layer LCL
- 1039 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- -45 m²/s²
- 0-3 km storm-relative helicity
- 19 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 091708 RRA SVRCTP PAC009-091815- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE STATE COLLEGE PA 110 PM EDT WED JUL 9 1997 THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 215 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTH CENTRAL PENNSYLVANIA ...BEDFORD COUNTY THE NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM NEAR RIDDLESBURG AT 1 PM. THIS STORM WILL SLOWLY MOVE TO THE EAST. THE STORM MAY PRODUCE LARGE HAIL...STRONG WINDS...AND LOCALLY HEAVY RAINS. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH... DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE INDOORS AND STAY AWAY FROM WINDOWS. HEAVY RAINS FLOOD ROADS QUICKLY. DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH... DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE INDOORS AND STAY AWAY FROM WINDOWS. HEAVY RAINS FLOOD ROADS QUICKLY. DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. GRUMM
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 Jul 9, 9:25 AM EDT, 3 hours 45 minutes earlier.
Area forecast discussion, Jul 9, 9:25 AM EDT, 3 hours 45 minutes before
CENTRAL PENNSYLVANIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 920 AM EDT WED JUL 9 1997 .SUGGESTIONS... NO CHANGES.... .DISCUSSION... 12Z SFC ANALYSIS PLACES COLD FRONT OVER NW PA JUST E OF ERI WITH SFC LOW ALONG FRONT IN S NY. FRONT TO PUSH THRU UNV AREA ARND MIDDAY THEN INTO SUS VALLEY BY EARLY AFTN. WITH CLD COVER AND DEWPTS IN THE LOW/MID 60S EXPECT CONVECTION WILL BE SLOW TO START ACROSS CWA. CONVECTION SHOULD REFIRE ALONG FRONT EARLY THIS AFTERNOON AND MAY CLIP OUR E CWA WITH SVR. NE PA A FAVORABLE AREA FOR SVR WITH RR QUAD OF 3H JET OVERHEAD AND 70 DEWPTS ADVECTING NORTHWARD. FCST 7H RH PROGS SHOW DRY AIR MOVING INTO FCST/A LATE TONIGHT AND SFC HIGH PRESSURE SETTLING INTO PA ON THU. WINTHER
In the hours before
Special weather statement, Jul 9, 11:04 AM EDT, 2 hours 6 minutes before
PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046- 049>053-056>059-063>066-092200- SPECIAL WEATHER STATEMENT - SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE STATE COLLEGE PA 1105 AM EDT WED JUL 9 1997 ...A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS EASTERN PENNSYLVANIA THIS AFTERNOON... THE STORM PREDICTION CENTER IN NORMAN OKLAHOMA SAYS THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS THE MIDDLE AND LOWER SUSQUEHANNA VALLEY THIS AFTERNOON AND EVENING. A COLD FRONT WILL MOVE SLOWLY ACROSS EASTERN PENNSYLVANIA THIS AFTERNOON WITH SHOWERS AND THUNDERSTORMS ACCOMPANYING IT. AS THE FRONT ENTERS THE SUSQUEHANNA VALLEY THIS AFTERNOON THE THUNDERSTORMS...BUOYED BY MID SUMMER H2EAT AND HUMIDITY...COULD BECOME SEVERE. SKYWARN ACTIVATION MAY BE NEEDED LATER TODAY. WINTHER
Special weather statement, Jul 9, 11:05 AM EDT, 2 hours 5 minutes before
PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046- 049>053-056>059-063>066-092200- SPECIAL WEATHER STATEMENT - SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE STATE COLLEGE PA 1105 AM EDT WED JUL 9 1997 ...A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS EASTERN PENNSYLVANIA THIS AFTERNOON... THE STORM PREDICTION CENTER IN NORMAN OKLAHOMA SAYS THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS THE MIDDLE AND LOWER SUSQUEHANNA VALLEY THIS AFTERNOON AND EVENING. A COLD FRONT WILL MOVE SLOWLY ACROSS EASTERN PENNSYLVANIA THIS AFTERNOON WITH SHOWERS AND THUNDERSTORMS ACCOMPANYING IT. AS THE FRONT ENTERS THE SUSQUEHANNA VALLEY THIS AFTERNOON THE THUNDERSTORMS...BUOYED BY MID SUMMER HEAT AND HUMIDITY...COULD BECOME SEVERE. SKYWARN ACTIVATION MAY BE NEEDED LATER TODAY. WINTHER
The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 9, 1:42 PM EDT | Severe Thunderstorm Warning | CTP | Huntingdon | 63 min |
| Jul 9, 2:50 PM EDT | Severe Thunderstorm Warning | CTP | Fulton | 55 min |
| Jul 9, 4:26 PM EDT | Severe Thunderstorm Warning | CTP | Franklin | 64 min |
| Jul 9, 4:30 PM EDT | Severe Thunderstorm Warning | CTP | Adams | 60 min |
| Jul 9, 4:35 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 55 min |
| Jul 9, 4:39 PM EDT | Severe Thunderstorm Warning | CTP | York | 66 min |
| Jul 9, 6:00 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 65 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.