Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 45, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at May 19, 1997, 8:00 PM EDT for Northumberland County, Pennsylvania. It was in force for 45 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
- May 19, 1997, 8:00 PM EDT (00:00 UTC)
- Expired
- May 19, 1997, 8:45 PM EDT
- In force
- 45 min
- Issued by
- NWS State College, PA
- Area
- Whole counties
County Northumberland 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 |
|---|---|---|---|
| May 19, 8:00 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 00:00Z, 0.0 hours before the alert went out and 220 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
- 227 J/kg
- Mixed-layer CIN
- -67 J/kg
- Mixed-layer LCL
- 2329 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 138 m²/s²
- 0-3 km storm-relative helicity
- 192 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
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 May 19, 7:35 PM EDT, 25 minutes earlier.
Area forecast discussion, May 19, 7:35 PM EDT, 25 minutes before
CENTRAL PENNSYLVANIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 735 PM EDT MON MAY 19 1997 IN BRIEF TERMS...LINE OF STORMS MOVING ALONG QUITE GOOD. SOUTHTERN END MAY SLOW SOME...AS UPPER LEVEL WINDS STILL WSW ...BUT SE PA HAS BEEN DRY LATELY...SO SHOULD BE NOT A PROBLEM. CLEARING LATE. A NICE MS TO PS DAY ON TUE. SC AND COOLER WX MOVE IN TUE NIGHT AND WED. MARTIN
In the hours before
Special weather statement, May 19, 5:37 PM EDT, 2 hours 23 minutes before
PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-049>053- 056-200340- SPECIAL WEATHER STATEMENT - SEVERE THUNDERSTORM WATCH NATIONAL WEATHER SERVICE STATE COLLEGE PA 537 PM EDT MON MAY 19 1997 A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 11 PM FOR MUCH OF CENTRAL PENNSYLVANIA. THE WATCH INCLUDES MUCH OF THE SUSQUEHANNA VALLEY...EXCEPT THE EXTREME SOUTHERN PART. SEVERE THUNDERSTORMS...WITH LARGE HAIL AND DAMAGING WINDS ARE LIKEELY IN AND CLOSE TO THE WATCH AREA. IF THREATENING WEATHER IS OBSERVECD OR A WARNING IS ISSUED...SEEK SHELTER AT ONCE. THE WATCH INCLUDES THE FOLLOWING COUNTIES... WARREN...MCKEAN...POTTER...ELK...CLINTON... CAMERON...CLEARFIELD...CENTRE...CAMBRIA...BLAIR... HUNTINGDON...MIFFLIN...JUNIATA...SOMERSET...BEDFORD... FULTON...FRANKLIN...TIOGA...LYCOMING...SULLIVAN... UNION...MONTOUR...COLUMBIA...SNYDER...NORTHUMBERLAND... PERRY...AND CUMBERLAND COUNTY. MARTIN
Special weather statement, May 19, 5:39 PM EDT, 2 hours 21 minutes before
PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-049>053- 056-200340- SPECIAL WEATHER STATEMENT - SEVERE THUNDERSTORM WATCH NATIONAL WEATHER SERVICE STATE COLLEGE PA 537 PM EDT MON MAY 19 1997 A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 11 PM FOR MUCH OF CENTRAL PENNSYLVANIA. THE WATCH INCLUDES MUCH OF THE SUSQUEHANNA VALLEY...EXCEPT THE EXTREME SOUTHERN PART. SEVERE THUNDERSTORMS...WITH LARGE HAIL AND DAMAGING WINDS ARE LIKEELY IN AND CLOSE TO THE WATCH AREA. IF THREATENING WEATHER IS OBSERVECD OR A WARNING IS ISSUED...SEEK SHELTER AT ONCE. THE WATCH INCLUDES THE FOLLOWING COUNTIES... WARREN...MCKEAN...POTTER...ELK...CLINTON... CAMERON...CLEARFIELD...CENTRE...CAMBRI A...BLAIR... HUNTINGDON...MIFFLIN...JUNIATA...SOMERSET...BEDFORD... FULTON...FRANKLIN...TIOGA...LYCOMING...SULLIVAN... UNION...MONTOUR...COLUMBIA...SNYDER...NORTHUMBERLAND... PERRY...AND CUMBERLAND COUNTY. MARTIN
The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 19, 8:29 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Schuylkill | 61 min |
| May 19, 8:29 PM EDT | Severe Thunderstorm Warning | CTP | Perry | 61 min |
| May 19, 8:44 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland, Franklin | 61 min |
| May 19, 8:50 PM EDT | Severe Thunderstorm Warning | CTP | Lebanon | 55 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; the sounding from the Mesonet's radiosonde archive.