Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 52, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at Aug 13, 1990, 7:21 PM EDT for Lancaster County, Pennsylvania. It was in force for 39 min.
The area
The counties it named.
The facts
- Issued
- Aug 13, 1990, 7:21 PM EDT (23:21 UTC)
- Expired
- Aug 13, 1990, 8:00 PM EDT
- In force
- 39 min
- Issued by
- NWS State College, PA
- Area
- Whole counties
County Lancaster 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, 11.4 hours before the alert went out and 157 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
- NaN m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 92 m²/s²
- 0-3 km storm-relative helicity
- 114 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 132323
SVRHAR
PAC071-140000-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HARRISBURG PA
721 PM EDT MON AUG 13 1990
THE NATIONAL WEATHER SERVICE IN HARRISBURG HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 800 PM EDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
IN SOUTH CENTRAL PENNSYLVANIA
...EAST CENTRAL LANCASTER
AT 718 PM WE RECEIVED REPORTS OF LARGE TREES DOWNED AND WIRE DOWN NEAR
THE CITY OF LANCASTER. THE TOWER AT THE LANCASTER AIRPORT REPORTED
WINDS TO NEAR 60 MILES AN HOUR.
RADAR ALSO SHOWED THUNDERSTORMS WITH VERY HEAVY RAIN...POSSIBLE STRONG
GUSTY WINDS AND HAIL MOVING THROUGH EASTERN AREAS OF THE COUNTY.
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
Local storm report, Aug 13, 6:13 PM EDT, 1 hour 8 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILLIAMSPORT PA
600 PM EDT MON AUG 13 1990
CITY/TOWN/ COUNTY TIME
VILLAGE /EDT XEPORT
3 MILES EAST OF CALVERT LYCOMING 1534 POSSIBLE TORNADO
GAMBLE TOWNSHIP NUMEROUS TREES AND
POWER LINES DOWN.
> MANY PLACES WITHOUT
POWER.
FJGSpecial weather statement, Aug 13, 6:20 PM EDT, 1 hour 1 minute before
PAZ007-008-014-132320- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILLIAMSPORT PA 620 PM EDT MON AUG 13 1990 ...SEVERE THUNDERSTORM WATCH CONTINUES FOR ALL OF NORTHCENTRAL PENNSYLVANIA UNTIL 9 PM... AT 620 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED THUNDERSTORMS WITH HEAVY DOWNPOURS MOVING OUT OF CENTRAL PENNSYLVANIA...STRETCHING FROM BERWICK TO SHAMOKIN AND ON TO HARRISBURG AND HAGERSTOWN MARYLAND. OTHER SCATTERED LIGHT RAIN SHOWERS WERE ACROSS MUCH OF NORTHCENTRAL PENNSYLVANIA. THE SHOWERS AND THUNDERSTORMS WERE MOVING EAST AT 35 MPH. MOST OF THE SHOWERS AND THUNDERSTORMS WERE EITHER MOVING OUT OF THE REGION OR WERE RAPIDLY DIMINISHING IN INTENSITY AT THIS TIME. A SEVEREE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT AND PERSONS IN AND CLOSE TO THE WATCH SHOULD REMAIN ALERT AND LISTEN FOR FURTHER STATEMENTS OR WARNINGS. FJG/JN
Special weather statement, Aug 13, 6:24 PM EDT, 57 minutes before
PAZ008-009-132300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HARRISBURG PA 620 PM EDT MON AUG 13 1990 ...SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 900 PM FOR MUCH OF CENTRAL AND EASTERN PENNSYLVANIA... AT 607 PM THE NATIONAL WEATHER SERVICE RADAR IN HARRISBURG WAS SHOWING A LINE OF STRONG THUNDERSTORMS MOVING THROUGH THE LOWER AND MIDDLE SUSQUEHANNA VALLEY. THE 5 MILE LINE EXTENDED FROM 10 MILES NORTHEAST OF BLOOMSBURG...SOUTHWEST THROUGH HARRISBURG...THEN DOWN THROUGH GETTYSBURG. THERE WERE ALSO A FEW STRONG STORMS AHEAD OF THE FRONT. AT 607 PM THE STRONGEST OF THE STORMS WAS IN NORTHWEST YORK COUNTY AROUND DILLSBURG. THE LINE OF STORMS WAS MOVING TO THE EAST AT ABOUT 30 MILES AN HOUR. AT THIS THE LINE OF STORMS SHOULD EXTEND FROM 10 MILES EAST OF HAZELTON...TO SOUTHWEST YORK COUNTY...AROUND 10 MILES EAST OF HANOVER...BY AROUND 700 PM. AND BY 800 PM...THE LINE SHOULD BE MOVING OUT OF THE LOWER SUSQUEHANNA VALLEY. GUSTY WINDS...HEAVY DOWNPOURS...DEADLY LIGHTNING AND HAIL COULD ACCOMPANY THESES STORMS. AS THE STORMS WERE MOVING THROUGH DOWNTOWN HARRISBURG WIND GUSTS WERE AROUND 50 MILES AND HOUR AND RAINS REDUCED VISIBILITIES TO NEAR ZERO. IF THREAKTENING WEATHER APPROACHES...SEEK SHELTER IMMEDIATELY. WSO HAR RBH
Special weather statement, Aug 13, 6:50 PM EDT, 31 minutes before
PAZ009-132345- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HARRISBURG PA 650 PM EDT MON AUG 13 1990 ...SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 900 PM FOR MUCH OF CENTRAL AND EASTERN PENNSYLVANIA... AT 641 PM THE NATIONAL WEATHER SERVICE RADAR IN HARRISBURG WAS SHOWING A LINE OF STRONG THUNDERSTORMS MOVING THROUGH THE LOWER SUSQUEHANNA VALLEY. THE 5 MILE LINE EXTENDED FROM 10 MILES SOUTHEAST OF HAZELTON...SOUTHWEST TO 10 MILES EAST OF HARRISBURG...THEN SOUTH THROUGH HANOVER AND INTO MARYLAND. AT 641 PM THE STRONGEST OF THE STORMS WAS ABOUT 15 MILES TO THE SOUTHEAST OF HARRISBURG. THE LINE OF STORMS WAS MOVING TO THE EAST AT ABOUT 30 MILES AN HOUR. AT THIS RATE THE LINE OF STORMS SHOULD MOVING OUT OF EASTERN LANCASTER COUNTY BY AROUND 741 PM. . GUSTY WINDS...HEAVY DOWNPOURS...DEADLY LIGHTNING AND HAIL COULD ACCOMPANY THESES STORMS. AS THE STORMS WERE MOVING THROUGH DOWNTOWN HARRISBURG WIND GUSTS WERE AROUND 5e0 MILES AND HOUR AND RAINS REDUCED VISIBILITIES TO NEAR ZERO. IF THREATENING WEATHER APPROACHES...SEEK SHELTER IMMEDIATELY. THIS WILL BE THE LAST STATEMENT ON THESE STORMS UNLESS FURTHER DEVELOPMENT TAKES PLACE. WSO HAR RBH
Special weather statement, Aug 13, 6:52 PM EDT, 29 minutes before
PAZ009-132345- SPECIAL WEATHER STATEMENT...CORRECTED NATIONAL WEATHER SERVICE HARRISBURG PA 650 PM EDT MON AUG 13 1990 ...SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 900 PM FOR MUCH OF CENTRAL AND EASTERN PENNSYLVANIA... AT 641 PM THE NATIONAL WEATHER SERVICE RADAR IN HARRISBURG WAS SHOWING A LINE OF STRONG THUNDERSTORMS MOVING THROUGH THE LOWER SUSQUEHANNA VALLEY. THE 5 MILE LINE EXTENDED FROM 10 MILES SOUTHEAST OF HAZELTON...SOUTHWEST TO 10 MILES EAST OF HARRISBURG...THEN SOUTH THROUGH HANOVER AND INTO MARYLAND. AT 641 PM THE STRONGEST OF THE STORMS WAS ABOUT 15 MILES TO THE SOUTHEAST OF HARRISBURG. THE LINE OF STORMS WAS MOVING TO THE EAST AT ABOUT 30 MILES AN HOUR. AT THIS RATE THE LINE OF STORMS SHOULD MOVING OUT OF EASTERN LANCASTER COUNTY BY AROUND 741 PM. . GUSTY WINDS...HEAVY DOWNPOURS...DEADLY LIGHTNING AND HAIL COULD ACCOMPANY THESES STORMS. AS THE STORMS WERE MOVING THROUGH DOWNTOWN HARRISBURG WIND GUSTjS WERE AROUND 50 MILES AND HOUR AND RAINS REDUCED VISIBILITIES TO NEAR ZERO. IF THREATENING WEATHER APPROACHES...SEEK SHELTER IMMEDIATELY. WSO HAR RBH COR...TO REMOVE LAST TWO LINES...WILL LIKELY HAVE AT LEAST ONE MORE SPS
Special weather statement, Aug 13, 7:00 PM EDT, 21 minutes before
PAZ007-008-014-140000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILLIAMSPORT PA 700 PM EDT MON AUG 13 1990 ...SEVERE THUNDERSTORM WATCH CANCELLED FOR NORTHCENTRAL PENNSYLVANIA... THE SEVERE THUNDERSTORM WATCH THAT WAS IN EFFECT FOR NORTHCENTRAL PENNSYLVANIA UNTIL 9 PM EDT HAS BEEN CANCELLED. NATIONAL WEATHER SERVICE RADAR NOW INDICATES THE STRONGEST THUNDERSTORMS HAVE MOVED INTO EASTERN PENNSYLVANIA. SHOWERS AND THUNDERSTORMS WILL xBE ENDING ACROSS NORTHCENTRAL PENNSYLVANIA THIS EVENING SO THE THREAT OF SEVERE WEATHER HAS ENDED ACROSS THE REGION. FJG/JN
The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 13, 3:13 PM EDT | Severe Thunderstorm Warning | CTP | Bradford | 47 min |
| Aug 13, 3:25 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming | 35 min |
| Aug 13, 3:47 PM EDT | Severe Thunderstorm Warning | CTP | Sullivan | 43 min |
| Aug 13, 6:54 PM EDT | Severe Thunderstorm Warning | CTP | Berks | 66 min |
| Aug 13, 6:54 PM EDT | Severe Thunderstorm Warning | CTP | Carbon | 66 min |
| Aug 13, 7:23 PM EDT | Severe Thunderstorm Warning | CTP | Berks, Lehigh | 52 min |
| Aug 13, 7:23 PM EDT | Severe Thunderstorm Warning | CTP | Carbon, Northampton | 52 min |
| Aug 13, 7:57 PM EDT | Severe Thunderstorm Warning | CTP | Lehigh, Northampton | 48 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.