Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 125, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at Aug 4, 1997, 5:47 PM EDT for Cumberland County, Pennsylvania. It was in force for 33 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
- Aug 4, 1997, 5:47 PM EDT (21:47 UTC)
- Expired
- Aug 4, 1997, 6:20 PM EDT
- In force
- 33 min
- Issued by
- NWS State College, PA
- Area
- Whole counties
County Cumberland County, PA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 4, 6:00 PM EDT | Thunderstorm Wind 51 | Carlisle, PA | Winds took down trees and powerlines just south of Carlisle. |
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
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 9.8 hours before the alert went out and 126 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
- 1323 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 38 m²/s²
- 0-3 km storm-relative helicity
- 144 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
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 Aug 4, 12:47 PM EDT, 5 hours earlier.
Area forecast discussion, Aug 4, 12:47 PM EDT, 5 hours before
CENTRAL PENNSYLVANIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 1245 PM EDT MON AUG 4 1997 ...SUGGESTIONS... CURRENT FCST LOOK OK...BUT WOULD PREFER NO SHOWERS FOR PIT ZNS AFT TUE MORNING. JUST CHECKED RADAR AGAIN...MAY NEED SOME THUNDER IN MOST AREAS TILL EARLY EVENING. ...DISCUSSION... SITUATION SIMILAR TO SETUP ABOUT 4 YEARS AGO WHEN A TOR HIT RIC VA. MAIN THING TODAY...IS PARAMETERS NOT PHASING. MOST AREAS GOT SOME NICE GENTLE RAIN. TIMING SUCH NOT TO FAVOR SEVERE FOR C PA. ECHOES NOW TURNING MORE E-NE...LOOKS LIKE PIVOT POINT OVER C VA...BUT UNLIKELY SE PA CAN RECOVER...GIVEN CLDS...DESPITE FAIRLY HI DEWPTS...THUS WOULD NOT EXPECT SEVERE. NY AND W PA NOW SOMEWHAT UNSTABLE WITH AFT HEATING. STORMS SO FAR ARE NOT REAL BIG...SO SMALL HAIL NOT LIKELY...BUT WILL HAVE TO WATCH. SOME ACTION LIKELY TO LINGER OVERNIGHT AND INTO TUE AM...AS COMPLEX WX PATTERN COMES TOGETHER. BEST CHC OF TUE AM SHOWERS WILL BE NE PA. HARD TO SEE MUCH DURING THE AFT...ESP. W AND C PA. WILL NOT BE IN A BIG RUSH TO CLEAR SKIES OUT IN TAFS. COULD BE A WET DAY TUE FOR THE COASTAL AREAS...ESP. NEW ENGLAND. RECORD COLD LIKELY TUE NIGHT AND WED NIGHT? MRARTIN
The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 4, 5:54 PM EDT | Severe Thunderstorm Warning | CTP | Adams, York | 61 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.