Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 24, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at Jun 30, 1990, 5:21 PM EDT for Adams County, Cumberland County, York County, Pennsylvania. It was in force for 2 hr.
The area
The counties it named.
The facts
- Issued
- Jun 30, 1990, 5:21 PM EDT (21:21 UTC)
- Expired
- Jun 30, 1990, 7:30 PM EDT
- In force
- 2 hr
- Issued by
- NWS State College, PA
- Area
- Whole counties
Counties Adams County, PA, Cumberland County, PA, York County, PA
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 9.4 hours before the alert went out and 119 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
- 73 J/kg
- Mixed-layer CIN
- -130 J/kg
- Mixed-layer LCL
- 1112 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 85 m²/s²
- 0-3 km storm-relative helicity
- 39 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 302123 RRA
SVRHAR
PAC001-041-055-133-302330-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HARRISBURG PA
521 PM EDT SAT JUN 30 1990
THE NATIONAL WEATHER SERVICE IN HARRISBURG HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 730 PM EDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN SOUTH CENTRAL PENNSYLVANIA
...ADAMS...CUMBERLAND...EASTERN FRANKLIN...YORK
AT 500 PM EDT WEATHER SERVICE RADAR IN HARRISBURG INDICATED WIDELY
SCATTERED RAINSHOWERS AND THUNDERSTORMS OVER PORTIONS OF WESTERN
PENNSYLVANIA AND THE SOUTHCENTRAL MOUNTAINS. THESE THUNDERSTORMS
SHOULD BE MOVING INTO THE LOWER SUSQUEHANNA VALLEY WITHIN THE NEXT
HOUR.
THE RAINSHOWERS AND THUNDERSTORMS WERE MOVING SOUTHEAST AT 35 TO 40
MPH.
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 UN'TIL THE STORM
HAS PASSED. MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.
WSO HAR CRUZWhat 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
Local storm report, Jun 30, 12:00 PM EDT, 5 hours 21 minutes before
LOCAL STORM REPORT NATIONAL WEATHER SERVICE WILLIAMSPORT PA 1200 PM EDT SAT JUN 30 1990 THE FOLLOWING EVENTS OCCURRED ON JUNE 29 1990 CITY/TOWN/ COUNTY TIME REPORT VILLAGE /EDT LOCK HAVEN CLINTON 1810 WIND DAMAGE TREES AND LIMBS BLOWN DOWN...ALSO A CAP WAS BLOWN OFF PICK-UP TRUCK. FJG
Local storm report, Jun 30, 1:19 PM EDT, 4 hours 2 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE HARRISBURG PA.
ISSUED 130 PM EDT SAT JUN 30 1990
EVENT DATE/TIME COUNTY CITY
SEVERE THUNDERSTORM...SEVERAL 29/2030PM HUNTINGDON NEAR
LARGE TREES DOWN. ONE MOBLIL WARRIOR MARK
HOME MOVED OFF FOUNDATION. NORTHERN PORTIONS
PENN-ELCTIC HAD NUMROUS OUTAGES. NEXT TO CENTRE CO.
SEVERE THUNDERSTORM...TREES 29/ 8 TO 9PM CENTRE PORT MATILDIA
DOWN BLOCKING DRY HOLLOW ROAD AREA.
(SR3015) WHICH WAS BEING USED
FOR A DETOUR.
ABOVE REPORTS WERE REPORTED TO THE NATIONAL WEATHER SEVICE BY THE PA.
STATE POLICE.
MIFFLIN COUNTY...STATE POLICE AND EMA OFFICALS REPORT NOTHING AT THIS
TIME. PA. D.O.T. CREWS CALLED OUT TO FIX ROADS DUE TO BUCKLING FROM HEAT
IN THE NORTHWESTERN CORNER OF COUNTY DURING THE EVENING. LOTS
OF HEAVY RAIN AND LIGHTNING,F BUT NO WINDS.
WSO HAR DHSpecial weather statement, Jun 30, 3:35 PM EDT, 1 hour 46 minutes before
PAZ007-008-014-302200 SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILLIAMSPORT PA 335 PM EDT SAT JUN 30 1990 ...SEVERE THUNDERSTORM WATCH UNTIL 1000 PM EDT FOR CLINTON COUNTY IN NORTHCENTRAL PENNSYLVANIA... THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR CLINTON COUNTY IN NORTHCENTRAL PENNSYLVANIA UNTIL 1000 PM EDT. SO FAR THERE HAS BEEN NO REPORTS OF SEVERE WEATHER ACROSS NORTHCENTRAL PENNSYLVANIA...HOWEVER NATIONAL WEATHER SERVICE RADAR INDICATED STRONG THUNDERSTORMS DEVELOPING OVER WESTERN PENNSYLVANIA. THESE THUNDERSTORMS WERE MOVING SOUTHEAST AT 40 MPH AND THEY WILL BEGIN TO MOVE INTO NORTHCENTRAL PENNSYLVANIA WITHIN THE NEXT COUPLE OF HOURS. PERSONS IN AND CLOSE TO THE SEVERE THUNDERSTORM WATCH AREA ARE ADVISED TO BE ALERT TO LOCAL WEATHER DEVELOPMENTS AND TAKE SHELTER IF THREATENING WEATHER IS SIGHTED. FJG
Special weather statement, Jun 30, 4:21 PM EDT, 1 hour before
PA009-013-302300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HARRISBURG PA. 425 PM EDT SAT JUN 30 1990 ...SHOWERS AND THUNDERSTORM WERE WIDELY SCATTERED JUST WEST OF THE LOWER SUSQUEHANNA VALLEY AT 400 PM... AT 400 PM EDT THE NATIONAL WEATHER SERVICE RADAR IN HARRISBURG WAS SHOWING WIDELY SCATTERED SHOWERS AND THUNDERSTORMS OVER PORTIONS OF WESTERN PENNSYLVANIA AND THE NORTH AND SOUTHCENTRAL MOUNTAINS. THESE SHOWERS AND THUNDERSTORMS SHOULD BE ENTERING INTO THE LOWER SUSQUEHANNA VALLEY WITHIN THE NEXT TWO HOURS. SOME OF THE STRONGER STORMS PRODUCING HEAVY DOWNPOURS WERE LOCATED OVER CAMBRIA ...BLAIR...AND HUNTINGDON COUNTIES. PERSONS LIVING IN PERRY...CUMBERLAND...AND ADAMS COUNTIES SHOULD BE ALERT TO LOCAL WEATHER DEVELOPMENTS AND TAKE SHELTER IF THREATENING WEATHER IS SIGHTED. WSO HAR CRUZ
Special weather statement, Jun 30, 4:25 PM EDT, 56 minutes before
PA009-013-302300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HARRISBURG PA. 425 PM EDT SAT JUN 30 1990 ...SHOWERS AND THUNDERSTORM WERE WIDELY SCATTERED JUST WEST OF THE LOWER SUSQUEHANNA VALLEY AT 400 PM... AT 400 PM EDT THE NATIONAL WEATHER SERVICE RADAR IN HARRISBURG WAS SHOWING WIDELY SCATTERED SHOWERS AND THUNDERSTORMS OVER PORTIONS OF WESTERN PENNSYLVANIA AND THE NORTH AND SOUTHCENTRAL MOUNTAINS. THESE SHOWERS AND THUNDERSTORMS SHOULD BE ENTERING INTO THE LOWER SUSQUEHANNA VALLEY WITHIN THE NEXT TWO HOURS. SOME OF THE STRONGER STORMS PRODUCING HEAVY DOWNPOURS WERE LOCATED OVER CAMBRIA ...BLAIR...AND HUNTINGDON COUNTIES. PERSONS LIVING IN PERRY...CUMBERLAND...ADAMSAND HUNTINGDON COUNTIES SHOULD BE ALERT TO LOCAL WEATHER DEVELOPMENTS AND TAKE SHELTER IF THREATENING WEATHER IS SIGHTED. THE STORMS WERE MOVING TOWARDS THE SOUTHEAST AT 40 MILES AN HOUR WSO HAR CRU
Special weather statement, Jun 30, 5:00 PM EDT, 21 minutes before
PAZ007-008-014-302200 SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILLIAMSPORT PA 500 PM EDT SAT JUN 30 1990 ...SEVERE THUNDERSTORM WATCH CONTINUES UNTIL 1000 PM EDT FOR CLINTON COUNTY IN NORTHCENTRAL PENNSYLVANIA... AT 455 PM EDT NATIONAL WEATHER SERVICE RADAR INDICATED THUNDERSTORMS WITH HEAVY DOWNPOURS OVER SOUTHWESTERN BRADFORD AND WESTERN SULLIVAN COUNTIES. THESE THUNDERSTORMS WERE MOVING EAST AT 40 MPH AND THEY WILL BE MOVING INTO SUSQUEHANNA...WYOMING AND LUZERNE COUNTIES BY 600 PM EDT. ELSEWHERE...STRONG THUNDERSTORMS WERE DEVELOPING OVER SOUTHWEST AND SOUTHCENTRAL PENNSYLVANIA. THESE THUNDERSTORMS WERE MOVING SOUTHEAST AT 40 MPH AND THEY COULD BEGIN TO EFFECT PARTS OF CENTRAL AND NORTHCENTRAL PENNSYLVANIA DURING THE NEXT COUPLE OF HOURS. PERSONS IN AND CLOSE TO THE SEVERE THUNDERSTORM WATCH AREA ARE ADVISED TO BE ALERT TO LOCAL WEATHER DEVELOPMENTS AND TAKE SHELTER IF THREATENING WEATHER IS SIGHTED. FJG
The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 30, 5:21 PM EDT | Severe Thunderstorm Warning | CTP | Franklin | 2 hr |
| Jun 30, 7:15 PM EDT | Severe Thunderstorm Warning | CTP | Bradford | 20 min |
| Jun 30, 7:42 PM EDT | Severe Thunderstorm Warning | CTP | Franklin, Fulton, Huntingdon | 63 min |
| Jun 30, 7:42 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 63 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; the sounding from the Mesonet's radiosonde archive.