Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 49, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at Jun 2, 1999, 5:14 PM EDT for Cumberland County, Pennsylvania. It was in force for 61 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
- Jun 2, 1999, 5:14 PM EDT (21:14 UTC)
- Expired
- Jun 2, 1999, 6:15 PM EDT
- In force
- 61 min
- Issued by
- NWS State College, PA
- Area
- Whole counties
County Cumberland County, PA
The radar
The State College radar (KCCX), 105 km from the middle of the area, began a volume at 21:15 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
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 9.2 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
- 1863 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 60 m²/s²
- 0-3 km storm-relative helicity
- 34 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 022114 RRA SVRCTP PAC035-041-055-067-087-099-022215- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE STATE COLLEGE PA 514 PM EDT WED JUN 2 1999 THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... FRANKLIN COUNTY. CLINTON COUNTY. MIFFLIN COUNTY. JUNIATA COUNTY. CUMBERLAND COUNTY. PERRY COUNTY. * UNTIL 615 PM EDT. * AT 505 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM ALONG A LINE EXTENDING FROM BELLEFONTE TO MOUNT UNION TO FORT LOUDON...MOVING EAST AT 25 MPH. * SEVERE THUNDERSTORMS WILL BE NEAR... RENOVO...SOUTH RENOVO AT 520 PM EDT. LEWISTOWN AT 525 PM EDT. BURNHAM AND MILROY AT 530 PM EDT. BEECH CREEK AT 535 PM EDT. CHAMBERSBURG AT 545 PM EDT. HAIL...INTENSE RAIN AND STRONG DAMAGING WINDS ARE LIKELY WITH THIS STORM. TAKE COVER IN A SUBSTANTIAL SHELTER UNTIL THE STORM PASSES. 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 SOV DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. .END/DANGELO
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 2, 2:57 PM EDT, 2 hours 17 minutes earlier.
Area forecast discussion, Jun 2, 2:57 PM EDT, 2 hours 17 minutes before
CENTRAL PENNSYLVANIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 250 PM EDT WED JUNE 2 1999 INTERESTING SITUATION CONTINUING TO EVOLVE FOR LATE THIS AFTERNOON TONIGHT OVER THE REGION. AN UPPER LOW SPINNING OVER MICHIGAN WILL SLOWLY WEAKEN WITH TIME AND LIFT ENE ACROSS ONTARIO/QUEBEC AND NORTHERN NY STATE. VERY JUICY AIR IN PLACE OVER PA (SURFACE DEWPOINTS >60F) WITH MOIST SOUTHWESTERLY JET FUELING CONVECTIVE ACTIVITY THIS AFTERNOON. AT PRESS TIME...ONE LINE OF STRONG/SEVERE TSRA MOVING THROUGH THE SUSQUEHANNA VALLEY. ANOTHER AREA OF SHRA/TSRA IN WESTERN PA...WITH A THIRD LINE TRYING TO ORGANIZE ALONG THE ACTUAL COLD FRONT IN CENTRAL OHIO. THE BIG QUESTION IS - HOW MUCH CONVECTIVE/SEVERE ACTIVITY WILL AFFECT CENTRAL PA BEFORE THE FRONT PASSES ACROSS LATE TONIGHT? WILL CARRY LIKELY POPS ALL COUNTIES TONIGHT. EXPECT A COUPLE OF BROKEN LINES OF SHOWERS AND THUNDERSTORMS TO AFFECT CENTRAL PA THIS AFTERNOON AND EVENING. DAYTIME HEATING HAS DESTABILIZED THE AIR... BUT THE BEST DYNAMICS DO NOT REACH THE AREA UNTIL AFTER SUNSET. THUS... ISOLATED SEVERE WEATHER WILL CONTINUE THIS AFTERNOON AND LINGER INTO THE EVENING BEFORE THE ACTIVITY WEAKENS TO SHOWERS. A SHORTWAVE ASSOCIATED WITH A JET STREAK WILL PUSH IN FROM THE NORTHWEST EARLY THURSDAY...AND BUMP THE FRONT EAST AWAY FROM PA. THERE WILL BE A CHANCE OF INSTABILITY SHOWERS EARLY IN THE DAY...BUT BY AFTERNOON DRIER AIR WILL TAKE OVER AND CLOUDS WILL DECREASE. COOLER THURSDAY NIGHT AND FRIDAY AS HIGH PRESSURE BUILDS IN. WEEKEND LOOKS DRY AS TEMPS AGAIN CREEP UPWARD. .CTP...NONE. RXR
The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 2, 12:43 PM EDT | Severe Thunderstorm Warning | CTP | Huntingdon, Mifflin | 62 min |
| Jun 2, 2:41 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Lancaster, Lebanon, York | 49 min |
| Jun 2, 2:41 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland | 49 min |
| Jun 2, 2:48 PM EDT | Severe Thunderstorm Warning | CTP | Somerset | 42 min |
| Jun 2, 3:13 PM EDT | Severe Thunderstorm Warning | CTP | Cambria | 62 min |
| Jun 2, 3:25 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, Lebanon, Schuylkill | 50 min |
| Jun 2, 3:25 PM EDT | Severe Thunderstorm Warning | CTP | York | 50 min |
| Jun 2, 4:07 PM EDT | Severe Thunderstorm Warning | CTP | Bedford, Blair | 53 min |
| Jun 2, 4:20 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 55 min |
| Jun 2, 4:32 PM EDT | Severe Thunderstorm Warning | CTP | Fulton, Huntingdon | 58 min |
| Jun 2, 4:34 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 41 min |
| Jun 2, 5:14 PM EDT | Severe Thunderstorm Warning | CTP | Franklin, Juniata, Mifflin, Perry | 61 min |
| Jun 2, 5:14 PM EDT | Severe Thunderstorm Warning | CTP | Clinton | 61 min |
| Jun 2, 5:27 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming, Union | 78 min |
| Jun 2, 5:27 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 78 min |
| Jun 2, 5:27 PM EDT | Severe Thunderstorm Warning | CTP | Snyder | 78 min |
| Jun 2, 5:47 PM EDT | Severe Thunderstorm Warning | CTP | Tioga | 73 min |
| Jun 2, 5:55 PM EDT | Severe Thunderstorm Warning | CTP | Adams, Franklin | 65 min |
| Jun 2, 7:15 PM EDT | Severe Thunderstorm Warning | CTP | Adams, York | 60 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 1999Every severe thunderstorm warning in 1999
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.