Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 23, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at Jun 29, 1990, 7:51 PM EDT for Centre County, Huntingdon County, Mifflin County, Pennsylvania. It was in force for 39 min. 2 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
- Jun 29, 1990, 7:51 PM EDT (23:51 UTC)
- Expired
- Jun 29, 1990, 8:30 PM EDT
- In force
- 39 min
- Issued by
- NWS State College, PA
- Area
- Whole counties
Counties Centre County, PA, Huntingdon County, PA, Mifflin 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, 8:00 PM EDT | Thunderstorm Wind 0 | Centre, PA | |
| Jun 29, 8:30 PM EDT | 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
Washington/Dulle, VA (KIAD), launched 12:00Z, 11.9 hours before the alert went out and 192 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
- 79 J/kg
- Mixed-layer CIN
- -131 J/kg
- Mixed-layer LCL
- 1499 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 37 m²/s²
- 0-3 km storm-relative helicity
- 26 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 KHAR 292353
SVRHAR
PAC027-087-061-300030-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HARRISBURG PA
751 PM EDT FRI JUN 29 1990
THE NATIONAL WEATHER SERVICE IN HARRISBURG HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 830 PM EDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN CENTRAL PENNSYLVANIA
...CENTRE...MIFFLIN
IN SOUTH CENTRAL PENNSYLVANIA
...NORTHERN HUNTINGDON
AT 730 PM WEATHER SERVICE RADAR INDICATED SEVERE THUNDERSTORMS OVER
CAMBRIA AND BLAIR COUNTIES MOVING INTO CENTRE...HUNTINGDON...AND
MIFFLIN COUNTIES. THE STORMS WERE MOVING EAST SOUTHEAST AT 30 MILES AN
HOUR.
WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A
STRONG BUILDING. DO NOT STAND BY WINDOWS. DON'T USE TELEPHONES
OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM
HAS PASSED. MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH YOU SHOULD
PREPARE FOR DAMAGING WIND IN EXCESS OF 55 MPH...LARGE HAIL...AND
DEADLY LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT STAY AWAY FROM WINDOWS.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, 5:36 PM EDT, 2 hours 15 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
Special weather statement, Jun 29, 6:24 PM EDT, 1 hour 27 minutes before
PAZ006-008-013-292330 SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HARRISBURG PA. 627 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 THROUGH THE CENTRAL MOUNTAINS... AT 620 PM EDT THE NATIONAL WEATHER SERVICE RADAR WAS SHOWING A FEW STRONG THUNDERSTORMS IN CENTRAL PENNSYLVANIA. TWO OF THE STORMS WERE IN CENTRE COUNTY...ONE WAS ABOUT 5 MILES WEST OF STATE COLLEGE WHILE THE SECOND ONE WAS JUST EAST OF STATE COLLEGE. THE THIRD STORM WAS JUST TO THE NORTH OF ALTOONA. THE STORMS WERE MOVING TO THE EAST AT ABOUT 40 MILES AN HOUR. AT THIS RATE THE STORMS IN CENTRE COUNTY WILL BE MOVING INTO SNYDER AND UNION COUNTIES BY 730...WHILE THE STORM JUST NORTH OF ALTOONA SHOULD MOVE THROUGH NORTH HUNTINGDON AND MIFFLIN COUNTY BY 730 PM. THESE STORMS COULD CONTAIN BRIEF HEAVY DOMWNPOURS...GUSTY WINDS...SMALL HAIL AND DEADLY LIGHTNING. IF THREATENING WEATHER APPROACHES SEEK SHELTER IMMEDIATELY. WSO HAR RBH
Special weather statement, Jun 29, 6:30 PM EDT, 1 hour 21 minutes before
PAZ007-008-014-292330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILLIAMSPORT PA 630 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 620 PM NATIONAL WEATHER SERVICE RADAR SHOWED SHOWERS AND THUNDERSTORMS OVER THE COUNTIES OF TIOGA...LYCOMING...SOUTHERN CLINTON ...SULLIVAN...UNION...SOUTHERN CENTRE AND BRADFORD. THE STRONGEST THUNDERSTORMS WERE IN SOUTHERN CENTRE COUNTY. THESE SHOWERS AND THUNDERSTORMS WERE MOVING EAST AT 40 MPH. PERSONS IN OR CLOSE TO THE SEVERE THUNDEORSTORM 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, 6:51 PM EDT, 1 hour before
PAZ006-008-009-013-292350- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HARRISBURG PA. 655 PM EDT FRI JUN 29 1990 ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 1100 PM EDT... ...STRONG THUNDERSTORM MOVING THROUGH THE CENTRAL MOUNTAINS... AT 645 PM EDT THE NATIONAL WEATHER SERVICE RADAR WAS SHOWING SCATTERED THUNDERSTORMS OVER MUCH OF THE STATE. ONE OF THE STRONGER STORMS WAS ABOUT 10 MILES SOUTH OF WILLIAMSPORT...A SECOND WAS IN NORTHWEST MIFFLIN COUNTY... A THIRD WAS 15 MILES SOUTH OF DUBOIS...AND A SEVERE THUNDERSTORM WAS 25 MILES SOUTHWEST OF DUBOIS. THE STORMS WERE MOVING TO THE EAST AT ABOUT 40 MILES AN HOUR IF THREATENING WEATHER APPROACHES SEEK SHELTER IMMEDIATELY. WSO nHAR RBH
Special weather statement, Jun 29, 7:26 PM EDT, 25 minutes before
PAZ007-008-014-300030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILLIAMSPORT PA 726 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 715 PM NATIONAL WEATHER SERVICE RADAR SHOWED SHOWERS AND THUNDERSTORMS IN A LINE FROM ALTOONA TO BLOOMSBURG TO BINGHAMTON NEW YORK. HEAVIER THUNDERSTORMS WERE LOCATED IN SNYDER AND NORTHUMBERLAND COUNTIES. THESE SHOWERS AND THUNDERSTORMS WERE MOVING SOUTHEAST AT 40 MPH. 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, 7:39 PM EDT, 12 minutes before
PAZ006-008-009-013-300050- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HARRISBURG PA. 740 PM EDT FRI JUN 29 1990 ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 1100 PM EDT... ...STRONG THUNDERSTORM MOVING THROUGH THE CENTRAL MOUNTAINS... AT 730 PM EDT THE NATIONAL WEATHER SERVICE RADAR WAS SHOWING SCATTERED THUNDERSTORMS OVER MUCH OF THE WEST AND NORTHERN TWO THIRDS OF THE STATE. THE STONGEST THUNDERSTORM WAS IN SOUTH CLEARFIELD AND NORTH CAMERIA COUNTY... APPROXIMATELY 30 MILES WEST OF STATE COLLEGE. THE RADAR SHOWED SCATTERED THUNDERSTORMS OVER MUCH OF THE CENTRAL MOUNTAINS AND THE MIDDLE AND NORTH HALF OF THE LOWER SUSQUEHANNA VALLEY. THE STORMS WERE MOVING TO THE EAST AT ABOUT 40 MILES AN HOUR. DEADLY LIGHTNING...HAIL...GUSTY WINDS AND BRIEF HEAVY DOWNPOURS COULD ACCOMPANY THESE STORMS. SEEK SHELTER IMMEDIATELY IF THREATENING WEATHER APPROACHES. . WSO HAR RBH
The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 5:40 PM EDT | Severe Thunderstorm Warning | CTP | Clinton | 35 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.