Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 222, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at Sep 27, 1998, 6:49 PM EDT for Columbia County, Pennsylvania. It was in force for 36 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
- Sep 27, 1998, 6:49 PM EDT (22:49 UTC)
- Expired
- Sep 27, 1998, 7:25 PM EDT
- In force
- 36 min
- Issued by
- NWS State College, PA
- Area
- Whole counties
County Columbia County, PA
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 27, 4:15 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 10.8 hours before the alert went out and 248 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
- 71 J/kg
- Mixed-layer CIN
- -210 J/kg
- Mixed-layer LCL
- 1672 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 48 m²/s²
- 0-3 km storm-relative helicity
- 83 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 Sep 27, 2:50 PM EDT, 3 hours 59 minutes earlier.
Area forecast discussion, Sep 27, 2:50 PM EDT, 3 hours 59 minutes before
CENTRAL PENNSYLVANIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 250 PM EDT SUN SEP 27 1998 ...WRKZNS SENT TO PHL AND PIT VIA ADMCTP AROUND 240 PM... A FEW COMPUTER PROBLEMS SO WILL BE BRIEF. STRONG THUNDERSTORMS MOVING ACROSS NY STATE JUST NORTH OF CWA. NOSE OF A 35KT 8H JET APPEARS TO BE FEEDING THE MOISTURE THE THUNDERSTORMS NEED. FURTHER SOUTH AND WEST ACTIVITY MUCH MORE WIDELY SCATTERED ON PBZ RADAR SCOPE. CURRENT LAPS DATA SHOWS A RATHER STABLE AIRMASS IN PLACE ACROSS CENTRAL PA. HOWEVER... WILL WATCH ACTIVITY INCREASING ON PBZ RADAR SCOPE. WENT WITH CHC POPS THIS EVE (40 NORTH/30 SOUTH). CORE OF 3H JET SAGS SOUTH OF AREA BY 12Z MON WITH STRONG NVA SLIDING INTO REGION. WOULD HAVE GONE MOSTLY SUNNY FOR MONDAY BUT NOTICED A FAIRLY STRONG INVERSION AT 8H WITH PLENTY OF MOISTURE TRAPPED JUST BELOW THIS LEVEL. PARTLY SUNNY SHOULD COVER ALL AREAS EXCEPT ACROSS EXTREME SOUTH WHERE MO SUNNY SKIES SHOULD SUFFICE. SFC HIGH PRESSURE MOVES INTO CENTRAL PA LATE MONDAY NIGHT. LIGHT WINDS AND CLEAR SKIES LEAD ME TO GO BELOW MOS VALUES AND WENT CLOSER TO AVN FCST LOWS. BRIGHT SUNSHINE FOR TUESDAY. SPC JUST ISSUED SVR TSTM WATCH FOR AREAS N/W OF FCST/A. SO FAR SO GOOD. .CTP...NONE. WINTHER
In the hours before
Special weather statement, Sep 27, 4:02 PM EDT, 2 hours 47 minutes before
PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-049>053- 056>059-063>066-280150- SPECIAL WEATHER STATEMENT-SEVERE THUNDERSTORM WATCH NATIONAL WEATHER SERVICE STATE COLLEGE PA 402 PM EDT SUN SEP 27 1998 ...THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR ALL OF CENTRAL PENNSYLVANIA INCLUDING THE SUSQUEHANNA VALLEY UNTIL 10 PM EDT... ...THE SEVERE THUNDERSTORM WATCH INCLUDES THE FOLLOWING COUNTIES... WARREN... MCKEAN... POTTER... ELK... CAMERON... NORTHERN CLINTON... CLEARFIELD... NORTHERN CENTRE... SOUTHERN CENTRE... CAMBRIA... BLAIR... HUNTINGDON... MIFFLIN... JUNIATA... SOMERSET... BEDFORD... FULTON... FRANKLIN... TIOGA... NORTHERN LYCOMING... SULLIVAN... SOUTHERN CLINTON... SOUTHERN LYCOMING... UNION... SNYDER... NORTHUMBERLAND... MONTOUR... COLUMBIA... SCHUYLKILL... PERRY... DAUPHIN... LEBANON... CUMBERLAND... ADAMS... YORK... LANCASTER... ...FORECAST DETAILS... A COLD FRONT WILL MOVE SOUTH ACROSS CENTRAL PENNSYLVANIA THIS EVENING AND INTERACT WITH UNSEASONABLY WARM AND HUMID AIR ACROSS PENNSYLVANIA. AS A RESULT...SHOWERS AND THUNDERSTORMS...SOME LOCALLY SEVERE...WILL DEVELOP ALONG AND AHEAD OF THE FRONT AND MOVE RAPIDLY SOUTHEAST THROUGH THE EVENING HOURS. THE GREATEST THREAT FROM THE THUNDERSTORMS WILL BE DAMAGING STRAIGHT LINE WINDS. 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. A SEVERE THUNDERSTORM WATCH MEANS THAT CONDITIONS ARE FAVORABLE FOR THE DEVELOPMENT OF SEVERE THUNDERSTORMS. SEVERE THUNDERSTORMS ARE A POSSIBILITY... NOT A CERTAINTY. A SEVERE THUNDERSTORM PRODUCES WINDS OF 58 MPH OR GREATER AND/OR HAIL 3/4 INCH OR LARGER. WINTHER
Special weather statement, Sep 27, 4:02 PM EDT, 2 hours 47 minutes before
PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-049>053- 056>059-063>066-280150- SPECIAL WEATHER STATEMENT-SEVERE THUNDERSTORM WATCH NATIONAL WEATHER SERVICE STATE COLLEGE PA 402 PM EDT SUN SEP 27 1998 ...THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR ALL OF CENTRAL PENNSYLVANIA INCLUDING THE SUSQUEHANNA VALLEY UNTIL 10 PM EDT... ...THE SEVERE THUNDERSTORM WATCH INCLUDES THE FOLLOWING COUNTIES... WARREN... MCKEAN... POTTER... ELK... CAMERON... NORTHERN CLINTON... CLEARFIELD... NORTHERN CENTRE... SOUTHERN CENTRE... CAMBRIA... BLAIR... HUNTINGDON... MIFFLIN... JUNIATA... SOMERSET... BEDFORD... FULTON... FRANKLIN... TIOGA... NORTHERN LYCOMING... SULLIVAN... SOUTHERN CLINTON... SOUTHERN LYCOMING... UNION... SNYDER... NORTHUMBERLAND... MONTOUR... COLUMBIA... SCHUYLKILL... PERRY... DAUPHIN... LEBANON... CUMBERLAND... ADAMS... YORK... LANCASTER... ...FORECAST DETAILS... A COLD FRONT WILL MOVE SOUTH ACROSS CENTRAL PENNSYLVANIA THIS EVENING AND INTERACT WITH UNSEASONABLY WARM AND HUMID AIR ACROSS PENNSYLVANIA. AS A RESULT...SHOWERS AND THUNDERSTORMS...SOME LOCALLY SEVERE...WILL DEVELOP ALONG AND AHEAD OF THE FRONT AND MOVE RAPIDLY SOUTHEAST THROUGH THE EVENING HOURS. THE GREATEST THREAT FROM THE THUNDERSTORMS WILL BE DAMAGING STRAIGHT LINE WINDS. 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. A SEVERE THUNDERSTORM WATCH MEANS THAT CONDITIONS ARE FAVORABLE FOR THE DEVELOPMENT OF SEVERE THUNDERSTORMS. SEVERE THUNDERSTORMS ARE A POSSIBILITY... NOT A CERTAINTY. A SEVERE THUNDERSTORM PRODUCES WINDS OF 58 MPH OR GREATER AND/OR HAIL 3/4 INCH OR LARGER. WINTHER
The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 27, 4:09 PM EDT | Severe Thunderstorm Warning | CTP | Elk | 61 min |
| Sep 27, 4:17 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 63 min |
| Sep 27, 4:28 PM EDT | Severe Thunderstorm Warning | CTP | McKean, Warren | 62 min |
| Sep 27, 4:48 PM EDT | Tornado Warning | CTP | McKean | 32 min |
| Sep 27, 4:59 PM EDT | Tornado Warning | CTP | Clearfield | 31 min |
| Sep 27, 5:15 PM EDT | Severe Thunderstorm Warning | CTP | Cameron, Potter | 60 min |
| Sep 27, 5:56 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 34 min |
| Sep 27, 6:00 PM EDT | Severe Thunderstorm Warning | CTP | Clinton, Lycoming | 45 min |
| Sep 27, 6:11 PM EDT | Severe Thunderstorm Warning | CTP | Cambria | 49 min |
| Sep 27, 6:16 PM EDT | Tornado Warning | CTP | Union | 34 min |
| Sep 27, 6:27 PM EDT | Severe Thunderstorm Warning | CTP | Montour, Northumberland | 48 min |
| Sep 27, 6:41 PM EDT | Severe Thunderstorm Warning | CTP | Blair | 49 min |
| Sep 27, 7:02 PM EDT | Severe Thunderstorm Warning | CTP | Huntingdon | 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; the sounding from the Mesonet's radiosonde archive.