Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1989
Severe Thunderstorm Warning 35, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at Nov 20, 1989, 7:36 PM EST for Franklin County, Fulton County, Huntingdon County, Pennsylvania. It was in force for 69 min. 3 reports 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
- Nov 20, 1989, 7:36 PM EST (00:36 UTC)
- Expired
- Nov 20, 1989, 8:45 PM EST
- In force
- 69 min
- Issued by
- NWS State College, PA
- Area
- Whole counties
Counties Franklin County, PA, Fulton County, PA, Huntingdon County, PA
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Nov 20, 8:07 PM EST | Thunderstorm Wind 0 | Huntingdon, PA | |
| Nov 20, 8:15 PM EST | Thunderstorm Wind 0 | Fulton, PA | |
| Nov 20, 8:30 PM EST | Thunderstorm Wind 0 | Huntingdon, 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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Atlantic City In, NJ (KACY), launched 00:00Z, 0.6 hours before the alert went out and 302 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
- 1712 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 102 m²/s²
- 0-3 km storm-relative helicity
- 197 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.
In the hours before
Special weather statement, Nov 20, 6:15 PM EST, 1 hour 21 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILLIAMSPORT PA 615 PM EST MON NOV 20 1989 ...STRONG GUSTY WINDS EXPECTED ACROSS NORTHCENTRAL PENNSYLVANIA... A RAPIDLY MOVING COLD FRONT IS EXPECTED TO PASS THROUGH NORTHCENTRAL PENNSYLVANIA THIS EVENING. THE FRONT CAUSED WIND GUSTS OF 59 MILES AN HOUR AT ERIE INTERNATIONAL AIRPORT EARLIER THIS EVENING. IN ADDITION...THUNDERSTORMS DEVELOPING IN ADVANCE OF THIS FRONT CAUSED WIND GUSTS OF 81 MILES AN HOUR AT JAMESTOWN NEW YORK SHORTLY AFTER 5 PM THIS EVENING. SHOWERS AND THUNDERSTORMS WILL MOVE THROUGH NORTHCENTRAL PENNSYLVANIA BETWEEN 630 AND 930 PM. THE STRONG GUSTY WINDS ASSOCIATED WITH THESE THUNDERSTORMS COULD BE STRONG ENOUGH TO BRING DOWN TREE LIMBS AND PRODUCE POWER OUTAGES. ANY LOOSE OBJECTS LEFT OUTDOORS SHOULD BE SECURED OR BROUGHT INDOORS. JSN INT
Special weather statement, Nov 20, 6:34 PM EST, 1 hour 2 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HARRISBURG PA. 630 PM EST MON NOV 20 1989 ...STRONG GUSTY WINDS WILL MOVE ACROSS THE LOWER SUSQUEHANNA VALLEY TONIGHT... A FAST MOVING COLD FRONT...NOW MOVING THROUGH NORTHWEST PENNSYLVANIA ...HAS ALREADY PRODUCED WIND GUST TO 59 MPH AT THE ERIE AIRPORT. AN AREA OF SHOWERS AND THUNDERSTORMS HAVE FORMED IN ADVANCE OF THIS FRONT AND IS NOW MOVING THROUGH NORTH CENTRAL PENNSYLVANIA. THE STRONG GUSTY WINDS WILL MOVE INTO THE THE LOWER SUSQUEHANNA VALLEY SHORTLY AFTER 645 PM. ANY LOOSE OBJECTS LEFT OUTDOORS SHOULD BE SECURED OR BETTER YET BROUGHT INDOORS. WSO HAR JORDAN
The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 20, 7:00 PM EST | Severe Thunderstorm Warning | CTP | Bradford, Lycoming, Sullivan | 60 min |
| Nov 20, 7:15 PM EST | Severe Thunderstorm Warning | CTP | Juniata, Mifflin, Northumberland, Perry, Snyder, Union | 60 min |
| Nov 20, 7:15 PM EST | Severe Thunderstorm Warning | CTP | Cumberland, Dauphin, Lebanon | 60 min |
| Nov 20, 7:15 PM EST | Severe Thunderstorm Warning | CTP | Centre | 60 min |
| Nov 20, 7:15 PM EST | Severe Thunderstorm Warning | CTP | Montour | 60 min |
| Nov 20, 7:36 PM EST | Severe Thunderstorm Warning | CTP | Adams, Lancaster, York | 69 min |
| Nov 20, 8:14 PM EST | Severe Thunderstorm Warning | CTP | Cumberland, Dauphin, Perry | 46 min |
| Nov 20, 8:14 PM EST | Severe Thunderstorm Warning | CTP | Lebanon | 46 min |
| Nov 20, 8:20 PM EST | Severe Thunderstorm Warning | CTP | Schuylkill | 60 min |
| Nov 20, 8:40 PM EST | Severe Thunderstorm Warning | CTP | Berks, Lehigh | 65 min |
| Nov 20, 8:40 PM EST | Severe Thunderstorm Warning | CTP | Northampton | 65 min |
| Nov 20, 8:56 PM EST | Severe Thunderstorm Warning | CTP | Adams, Franklin | 49 min |
| Nov 20, 8:56 PM EST | Severe Thunderstorm Warning | CTP | Lancaster, York | 49 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 1989Every severe thunderstorm warning in 1989
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.