Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 112, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at Jun 20, 1998, 3:49 PM EDT for Clinton County, Pennsylvania. It was in force for 46 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
- Jun 20, 1998, 3:49 PM EDT (19:49 UTC)
- Expired
- Jun 20, 1998, 4:35 PM EDT
- In force
- 46 min
- Issued by
- NWS State College, PA
- Area
- Whole counties
County Clinton County, PA
The radar
The State College radar (KCCX), 46 km from the middle of the area, began a volume at 19:53 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 |
|---|---|---|---|
| Jun 20, 4:00 PM EDT | Thunderstorm Wind 80 | Flemington, 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
Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 7.8 hours before the alert went out and 208 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
- 288 J/kg
- Mixed-layer CIN
- -58 J/kg
- Mixed-layer LCL
- 832 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 7 m²/s²
- 0-3 km storm-relative helicity
- 3 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
407 WUUS01 KCTP 201953 SVRCTP PAC035-202035- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE STATE COLLEGE PA 349 PM EDT SAT JUN 20 1998 THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CLINTON COUNTY IN CENTRAL PENNSYLVANIA * UNTIL 435 PM EDT * AT 349 PM EDT...STATE COLLEGE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM IN THE VICINITY OF JERSEY SHORE...MOVING SOUTHEAST AT 25 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... LOGANTON AT 410 PM EDT CARROLL AT 410 PM EDT
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 Jun 20, 2:20 PM EDT, 1 hour 29 minutes earlier.
Area forecast discussion, Jun 20, 2:20 PM EDT, 1 hour 29 minutes before
CENTRAL PENNSYLVANIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 220 PM EDT SAT JUN 20 1998 ...DISCUSSION... WK S/WV RESPONSIBLE FOR SCT TSRA THIS AFTN...WILL PASS SOUTH AND EAST OF THE REGION THIS EVENING. WUD KEEP CHC POPS FOR SUSQ VALL EARLY THIS EVENING. RIDGE THEN BUILDS INTO THE AREA OVERNIGHT WITH SIGNIFICANT DRYING/SUBSIDENCE AT ALL LEVELS. SKIES SHOULD BECOME MOSTLY CLEAR ACROSS ENTIRE FA. MOS FORECASTING AM FOG...HOWEVER DO NOT FEEL IT WILL BE DENSE ENOUGH TO MENTION IN ZONES. SUNDAY...RIDGE AXIS PROGGED TO REMAIN JUST W OF FA...THUS EXPECT PLENTY OF SUNSHINE. SUBSIDENCE AND WARMING TEMPS ALOFT WILL LIMIT CU FORMATION. IN ADDTION...8H TEMPS PROGGED IN THE 17-18C RANGE WILL TRANSLATE TO AFTN SFC TEMPS IN EXCESS OF 90 DEGREES IN THE LOWER ELEVATIONS. SUN NITE...NEXT S/WV ROTATES AROUND THE BASE OF MAIN TROUGH IN THE UPPER MID WEST...THEN INTO PA DURING SUN NITE. THIS FEATURE IS PROGGED TO BE WEAK AND PRODUCES LITTLE COOLING ALOFT DESPITE AN INCREASE IN LL MOISTURE. AT THIS POINT...WUD PLACE CHC POPS NW ZONES AND LEAVE REMAINDER OUT FOR NOW. MONDAY...L/WV TROUGH PASSES TO OUR N THROUGH SE CANADA. MOST SIGNIFICANT UPPER LVL DIFFLUENCE AND COOLING WILL OCCUR WELL TO OUR N...HOWEVER WUD ADD CHC POPS ALL ZONES FOR A TSRA. UNDER PTSUNNY SKIES...TEMPS WILL LIKELY BE SLIGHTLY COOLER THAN ON SUNDAY. FITZGERALD
The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 12:34 AM EDT | Flash Flood Warning | CTP | Cambria | 4 hr |
| Jun 20, 5:02 PM EDT | Severe Thunderstorm Warning | CTP | Snyder | 48 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 1998Every severe thunderstorm warning in 1998
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.