Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1995
Severe Thunderstorm Warning 237, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at Oct 5, 1995, 10:20 PM EDT for Lancaster County, York County, Pennsylvania. It was in force for 40 min.
The area
The counties it named.
The facts
- Issued
- Oct 5, 1995, 10:20 PM EDT (02:20 UTC)
- Expired
- Oct 5, 1995, 11:00 PM EDT
- In force
- 40 min
- Issued by
- NWS State College, PA
- Area
- Whole counties
Counties Lancaster County, PA, York County, PA
The radar
The Sterling radar (KLWX), 141 km from the middle of the area, began a volume at 02:21 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
Washington/Dulle, VA (KIAD), launched 00:00Z, 2.3 hours before the alert went out and 139 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
- 937 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 608 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 293 m²/s²
- 0-3 km storm-relative helicity
- 415 m²/s²
- Significant tornado parameter
- 1.6
- Supercell composite
- 8.6
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 Oct 5, 8:52 PM EDT, 1 hour 28 minutes earlier.
Area forecast discussion, Oct 5, 8:52 PM EDT, 1 hour 28 minutes before
CENTRAL PENNSYLVANIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 845 PM EDT THU OCT 5 1995 VAD WINDS ON KCCX 88D STILL SHOWING 5K FEET WINDS SCREAMING ALONG AT 50 KTS. STILL SOME LOW LEVEL VEERING...BUT NOT NEARLY AS IMPRESSIVE AS EARLIER TONIGHT...IMPLYING HELICITY VALUES DROPPING. JUST GOT A CALL FROM A SPOTTER IN GREENCASTLE (FRANKLIN CO) OF WINDS GUSTING TO NEAR 50. THE BIG QUESTION WITH THE WIND ADVISORIES IS WHETHER OR NOT ANY OF THE 50K WINDS WILL MIX DOWN TO THE SURFACE...AND THEREFORE REQUIRE THE ADVISORIES TO BE EXTENDED. OTHER THAN THE ISOLATED REPORT MENTIONED ABOVE...HAVE NOT HEARD ANYTHING ABOUT STRONG WINDS. ALL WIND ADVISORIES NOW SLATED TO EXPIRE AT 1000 PM. GIVEN ISOLATED NATURE OF HIGH WINDS... WOULD ELECT TO DROP ADVISORIES...BUT STILL KEEP THE MENTION OF STRONG GUSTS ALONG THE HIGHER ELEVATIONS. ANOTHER SPOTTER CALL JUST IN AT 830 PM UNDER ONE OF THE HEAVIEST CELLS JUST SOUTHEAST OF CTP REPORTS TORRENTIAL RAINS...BUT NOTHING MUCH IN THE WAY OF GUSTY WINDS. THIS LAST BATCH OF RAIN OVER CENTRAL PA REALLY SEEMS TO BE THE END OF ANY ORGANIZED RAIN...WITH CELLS MOVING TO THE NE AT 40-50 KTS. HAVE TO RUN...WITH POTENTIAL NASTY CELLS STARTING TO POP OVERHEAD. GOT AN ISOLATED LIGHTNING FLASH OUT THE WINDOW. JUNG
The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 5, 9:30 PM EDT | Severe Thunderstorm Warning | CTP | Perry | 30 min |
| Oct 5, 9:48 PM EDT | Severe Thunderstorm Warning | CTP | Snyder | 27 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 1995Every severe thunderstorm warning in 1995
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.