Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 22, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at Jun 29, 1990, 5:40 PM EDT for Clinton County, Pennsylvania. It was in force for 35 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 29, 1990, 5:40 PM EDT (21:40 UTC)
- Expired
- Jun 29, 1990, 6:15 PM EDT
- In force
- 35 min
- Issued by
- NWS State College, PA
- Area
- Whole counties
County Clinton 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 |
|---|---|---|---|
| Jun 29, 6:10 PM EDT | Thunderstorm Wind 0 | Clinton, 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
Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 9.7 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
- 328 J/kg
- Mixed-layer CIN
- -83 J/kg
- Mixed-layer LCL
- 752 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 165 m²/s²
- 0-3 km storm-relative helicity
- 206 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KIPT 292140 SVRIPT PAC035-292215- BULLETIN-IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE WILLIAMSPORT PA 540 PM EDT FRI JUN 29 1990 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 615 PM EDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF NORTHCENTRAL PENNSYLVANIA...CLINTON THESE THUNDERSTORMS WILL LIKELY PRODUCE DAMAGING WINDS..HAIL..HEAVY RAIN AND DANGEROUS LIGHTNING. A SEVERE THUNDERSTORM PRODUCES WINDS IN EXCESS OF 58 MPH AND/OR HAIL 3/4 INCH OR LARGER IN DIAMETER. IF THREATENING WEATHER APPROACHES YOU SHOULD GO TO A SAFE PLACE IMMEDIATELY. TO REPORT SEVERE WEATHER CALL THE NEAREST LAW ENFORCEMENT AGENCY OR EMERGENCY MANAGEMENT O$FFICE AND ASK THEM TO RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE. KF
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, Jun 29, 4:45 PM EDT, 55 minutes before
PAZ007-008-014-292130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILLIAMSPORT PA 445 PM EDT FRI JUN 29 1990 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR NORTHCENTRAL PENNSYLVANIA UNTIL 1000 PM THIS EVENING... THE THREAT OF SEVERE THUNDERSTORMS WITH LARGE HAIL...DANGEROUS LIGHTNING AND DAMAGING WINDS WILL EXIST UNTIL 1000 PM THIS EVENING. AT 425 PM NATIONAL WEATHER SERVICE RADAR SHOWED SHOWERS AND THUNDERSTORMS OVER THE COUNTIES OF POTTER TIOGA AND BRADFORD ALONG THE PENNSYLVANIA/NEW YORK BORDER. NO SEVERE WEATHER HAS BEEN OBSERVED OR REPORTED. PERSONS IN OR CLOSE TO THE SEVERE THUNDERSTORM WATCH AREA ARE ADVISED TO BE ALERT TO LOCAL WEATHER DEVELOPMENTS AND TAKE SHELTER IF THREATENING WEATHER IS SIGHTED. KF
Special weather statement, Jun 29, 4:53 PM EDT, 47 minutes before
PA008-013-2982130300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HARRISBURG PA. 450 PM EDT FRI JUN 28 1990 ...SEVERE THUNDERSTORM WATCH FOR BLAIR CENTRE CLEARFIELD CLINTON HUNTINGDON MIFFLIN MONTOUR NORTHUMBERLAND SNYDER AND UNION COUNTIES UNTIL 1000 PM... AT 440 PM EDT THE NATIONAL WEATHER SERVICE RADAR WAS SHOWING AN AREA OF SHOWERS AND THUNDERSTORMS OVER MUCH OF NORTH PENNSYLVANIA. SOME OF THE STRONGER STORMS WERE EAST CENTRAL POTTER COUNTY...WEST CAMERON COUNTY AND A THIRD ONE WAS IN NORTHWEST CLEARFIELD COUNTY...APPROXIMATELY 15 MILE EAST OF DUBOIS. BREIF HEAVY DOWNPOURS...GUSTY WINDS...DEADLY LIGHTNING AND SMALL HAIL COULD ACCOMPANY THESE STORMS AS THEY PASS. THE STORMS WERE MOVING TO THE EAST AT AROUND 45 MILES AN HOUR AND AT THIS RATE...THE STORM EAST OF DUBOIS WILL MOVE ACROSS NORTH CENTRE COUNTY BY 550 PM. THE STRONG STORM IN CAMERON WILL MOVE THROUGH NORTH CLINTON COUNTY... AND THE STOMR IN POTTER WILL MOVE THROUGH CENTRAL TIOGA COUNTY. . IF THREATENING WEATHER APPROACHES...SEEK SHELTER IMMEDIATELY. WSO HAR RBH
Special weather statement, Jun 29, 5:30 PM EDT, 10 minutes before
PA008-013-2982130300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HARRISBURG PA. 530 PM EDT FRI JUN 28 1990 ...SEVERE THUNDERSTORM WATCH FOR BLAIR CENTRE CLEARFIELD CLINTON HUNTINGDON MIFFLIN MONTOUR NORTHUMBERLAND SNYDER AND UNION COUNTIES UNTIL 1000 PM... ...STRONG THUNDERSTORM MOVING TOWARDS CENTRE AND CLINTON COUNTIES... AT 515 PM EDT THE NATIONAL WEATHER SERVICE RADAR WAS SHOWING TWO STRONG THUNDERSTORMS IN NORTH CENTRAL PENNSYLVANIA. ONE OF THE STORMS WAS IN SOUTH CAMERON COUNTY...ABOUT 30 MILES NORTHWEST OF STATE COLLEGE AND A SECOND STORM WAS IN EAST CLEARFIELD...ABOUT 25 MILES EAST OF DUBOIS. THE STORMS WERE MOVING TO THE EAST AT ABOUT 40 MILES AN HOUR. AT THIS RATE THE STORM IN CAMERON COUNTY SHOULD BE MOVING THROUGH NORTH CLINTON COUNTY SHORTLY AND BE ABOUT 15 MILES WEST OF WILLIAMSPORT BY 630 PM. THE STORM IN CLEARFIELD COUNTY SHOULD BE IN NORTHWEST CENTRE COUNTY SHORTLY AND BE ABOUT 30 MILES TO THE NORTHEAST OF STATE COLLEGE BY ABOUT 630 PM. THESE STORMS COULD CONTAIN BRIEF HEAVY DOWNPOURS...GUSTY WINDS...SMALL HAIL AND DEADLY LIGHTNING. IF THREATENING WEATHER APPROACHES SEEK SHELTER IMMEDIATELY. WSO HAR RBH
Special weather statement, Jun 29, 5:30 PM EDT, 10 minutes before
PAZ007-008-014-292230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILLIAMSPORT PA 530 PM EDT FRI JUN 29 1990 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR NORTHCENTRAL PENNSYLVANIA UNTIL 1000 PM THIS EVENING... THE THREAT OF SEVERE THUNDERSTORMS WITH LARGE HAIL...DANGEROUS LIGHTNING AND DAMAGING WINDS WILL EXIST UNTIL 1000 PM THIS EVENING. AT 530 PM NATIONAL WEATHER SERVICE RADAR SHOWED SHOWERS AND THUNDERSTORMS OVER THE COUNTIES OF POTTER TIOGA LYCOMING CLINTON AND BRADFORD. THE STRONGEST THUNDERSTORMS WERE IN WESTERN CLINTON COUNTY WITH ANOTHER SMALL CLUSTER IN SOUTHCENTRAL TIOGA COUNTY. THESE SHOWERS AND THUNDERSTORMS WERE MOVING SOUTHEAST AT 30 MPH. NO SEVERE WEATHER HAS BEEN OBSERVED OR REPORTED. PERSONS IN OR CLOSE TO THE SEVERE THUNDERSTORM WATCH AREA ARE ADVISED TO BE ALERT TO LOCAL WEATHER DEVELOPMENTS AND TAKE SHELTER IF THREATENING WEATHER IS SIGHTED. KF
Special weather statement, Jun 29, 5:36 PM EDT, 4 minutes before
PA008-013-2982130300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HARRISBURG PA. 530 PM EDT FRI JUN 29 1990 ...SEVERE THUNDERSTORM WATCH FOR BLAIR CENTRE CLEARFIELD CLINTON HUNTINGDON MIFFLIN MONTOUR NORTHUMBERLAND SNYDER AND UNION COUNTIES UNTIL 1000 PM... ...STRONG THUNDERSTORM MOVING TOWARDS CENTRE AND CLINTON COUNTIES... AT 515 PM EDT THE NATIONAL WEATHER SERVICE RADAR WAS SHOWING TWO STRONG THUNDERSTORMS IN NORTH CENTRAL PENNSYLVANIA. ONE OF THE STORMS WAS IN SOUTH CAMERON COUNTY...ABOUT 30 MILES NORTHWEST OF STATE COLLEGE AND A SECOND STORM WAS IN EAST CLEARFIELD...ABOUT 25 MILES EAST OF DUBOIS. THE STORMS WERE MOVING TO THE EAST AT ABOUT 40 MILES AN HOUR. AT THIS RATE THE STORM IN CAMERON COUNTY SHOULD BE MOVING THROUGH NORTH CLINTON COUNTY SHORTLY AND BE ABOUT 15 MILES WEST OF WILLIAMSPORT BY 630 PM. THE STORM IN CLEARFIELD COUNTY SHOULD BE IN NORTHWEST CENTRE COUNTY SHORTLY AND BE ABOUT 30 MILES TO THE# NORTHEAST OF STATE COLLEGE BY ABOUT 630 PM. THESE STORMS COULD CONTAIN BRIEF HEAVY DOWNPOURS...GUSTY WINDS...SMALL HAIL AND DEADLY LIGHTNING. IF THREATENING WEATHER APPROACHES SEEK SHELTER IMMEDIATELY. WSO HAR RBH COR FOR DATE
The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 7:51 PM EDT | Severe Thunderstorm Warning | CTP | Centre, Huntingdon, Mifflin | 39 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 1990Every severe thunderstorm warning in 1990
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.