Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 49, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at Aug 13, 1990, 3:47 PM EDT for Sullivan County, Pennsylvania. It was in force for 43 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
- Aug 13, 1990, 3:47 PM EDT (19:47 UTC)
- Expired
- Aug 13, 1990, 4:30 PM EDT
- In force
- 43 min
- Issued by
- NWS State College, PA
- Area
- Whole counties
County Sullivan 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 |
|---|---|---|---|
| Aug 13, 4:00 PM EDT | Thunderstorm Wind 0 | Sullivan, PA | |
| Aug 13, 4:15 PM EDT | Thunderstorm Wind 0 | Sullivan, 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, 7.8 hours before the alert went out and 244 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
- 4 J/kg
- Mixed-layer CIN
- -22 J/kg
- Mixed-layer LCL
- 579 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 116 m²/s²
- 0-3 km storm-relative helicity
- 346 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 KIPT 131947 SVRIPT PAC113-132030- BULLETIN-IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE WILLIAMSPORT PA 347 PM EDT MON AUG 13 1990 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 430 PM EDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF NORTHCENTRAL PENNSYLVANIA...SULLIVAN NATIONAL WEATHER SERVICE RADAR INDICATED A LINE OF THUNDERSTORMS EXTENDING FROM SAYRE IN BRADFORD COUNTY INTO NORTHWEST SULLIVAN COUNTY...CONTINUING INTO EASTERN LYCOMING COUNTY. THESE THUNDERTSORMS HAVE HAD A HISTORY OF EXTREEMLY HEAVY RAIN...DAMAGING WINDS AND 3/4 HAIL AS THEY PASSED THROUGH LYCOMING COUNTY. 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 OFFICE AND ASK THEM TO RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE. HM/JSN/FG
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, Aug 13, 1:46 PM EDT, 2 hours 1 minute before
PAZ004-005-006-014-131900- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HARRISBURG PA. 140 PM EDT MON AUG 13 1990 ...THUNDERSTORMS MOVING THROUGH THE NORTHERN AND CENTRAL MOUNTAINS... AT 135 HARRISBURG RADAR SHOWED A NARROW BAND OF THUNDERSTORMS THAT REACHED FROM EXTREME WESTERN CENTRE COUNTY...SOUTHWEST TO NEAR PORTAGE IN CAMBRIA COUNTY. OTHER SHOWERS REACHED FROM CAMERON COUNTY...SOUTH- WEST TO BEDFORD COUNTY. THE THUNDERSTORMS WERE MOVING NORTHEAST AROUND 40 MPH...WHILE THE AREA OF SHOWERS WAS MOVING MAINLY EAST NORTHEAST AROUND 25 MPH. THESE THUNDERSTORMS COULD PRODUCE HEAVY DOWNPOURS...GUSTY WINDS AND DANGEROUS LIGHTNING. WSO HAR JORDAN
Special weather statement, Aug 13, 2:15 PM EDT, 1 hour 32 minutes before
PAZ004-005-006-014-131900- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HARRISBURG PA. 210 PM EDT MON AUG 13 1990 ...THUNDERSTORMS MOVING THROUGH THE NORTHERN AND CENTRAL MOUNTAINS... AT 205 PM HARRISBURG RADAR SHOWED A NARROW BAND OF THUNDERSTORMS THAT REACHED FROM CLINTON COUNTY...SOUTHWEST TO NEAR ALTOONA IN BLAIR COUNTY. THESE THUNDERSTORMS SHOULD MOVE INTO THE STATE COLLEGE AREA DURING THE 15 TO 20 MINUTES. OTHER SHOWERS REACHED ,FROM POTTER COUNTY...SOUTH INTO NORTHERN BEDFORD. THESE THUNDERSTORMS COULD PRODUCE HEAVY DOWNPOURS...GUSTY WINDS...HAIL AND DANGEROUS LIGHTNING. THE THUNDERSTORMS WERE MOVING EAST NORTHEAST AROUND 35 MPH. WSO HAR JORDAN
Special weather statement, Aug 13, 2:26 PM EDT, 1 hour 21 minutes before
PAZ007-008-014-131930 SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILLIAMSPORT PA 226 PM EDT MON AUG 13 1990 ...THUNDERSTORMS WITH HEAVY RAIN ACROSS PORTIONS OF NORTHCENTRAL PENNSYLVANIA.. AT 225 PM EDT NATIONAL WEATHER SERVICE RADAR INDICATED A LINE OF THUNDERSTORMS WITH HEAVY RAIN EXTENDING FROM COUDERSPORT IN POTTER COUNTY...SOUTH THROUGH WESTERN CLINTON COUNTY TO NEAR ALTOONA. AN ISOLATED THUNDERSTORM WITH HEAVY RAIN WAS ALSO OVER NORTHEAST TIOGA COUNTY. ALL OF THE THUNDERSTORMS WERE MOVING NORTHEAST AT 35 MPH PERSONS IN NORTHEAST TIOGA COUNTY AND IN CLINTON COUNTY SHOULD BE PREPARED FOR LOCALLY HEAVY RAIN...GUSTY WINDS AND LIGHTNING AS THESE STORMS PASS THROUGH. THE LINEQ OF THUNDERSTORMS WILL MOVE ACROSS CLINTON AND CENTRE COUNTIES AND WILL ENTER TIOGA AND LYCOMING COUNTIES AROUND 300 PM EDT. JSN
Special weather statement, Aug 13, 2:44 PM EDT, 1 hour 3 minutes before
PAZ004-005-0060-007-014-131930- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HARRISBURG PA. 240 PM EDT MON AUG 13 1990 ...THUNDERSTORMS WERE MOVING THROUGH UPPER SUSQUEHANNA VALLEY AND CENTRAL MOUNTAINS AREAS... AT 235 PM HARRISBURG RADAR SHOWED A NARROW BAND OF THUNDERSTORMS THAT REACHED FROM SOUTHWEST TIOGA COUNTY...SOUTHWEST TO AROUND 10 MILES NORTH OF ORBISONIA IN HUNTINGDON COUNTY. A FEW ISOLATED THUNDERSTORMS WERE IN SOUTHWEST FRANKLIN COUNTY NEAR MERCERSBURG. OTHER SHOWERS REACHED FROM TIOGA COUNTY...SOUTH INTO NORTHERN FULTON COUNTY. THESE THUNDERSTORMS COULD PRODUCE HEAVY DOWNPOURS...GUSTY WINDS ...HAIL AND DANGEROUS LIGHTNING. THE THUNDERSTORMS WERE MOVING EAST NORTgHEAST AROUND 30 MPH. WSO HAR JORDAN
Special weather statement, Aug 13, 3:47 PM EDT, 0 minutes before
PAZ006-008-009-013-132030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HARRISBURG PA 345 PM EDT MON AUG 13 1990 ...SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 900 PM FOR MUCH OF CENTRAL PENNSYLVANIA... AT 335 PM THE NATIONAL WEATHER SERVICE RADAR IN HARRISBURG WAS SHOWING A LINE OF STRONG THUNDERSTORMS MOVING THROUGHT THE SUSQUEHANNA VALLEY. THE 10 MILE WIDE LINE OF STORMS EXTENDED FROM JUST EAST OF ELMIRA NEW YORK TO 25 MILES NORTHWEST OF HARRISBURG. THE STRONGEST STORMS WERE IN WEST SYNDER AND WEST UNION COUNTIES AND ALSO JUST WEST OF WILLIAMSPORT. THE STORMS HAD ALREADY PRODUCED DOWNPOURS... HAIL...GUSTY WINDS AND DEADLY LIGHTNING AS THEY WERE MOVING THROUGH WEST UNION COUNTY. THE THUNDERSTORMS WERE MOVING EAST AT ABOUT 25 MILES AN HOUR. AT THIS RATE THE STRONG STORMS SHOULD MOVE INTO NORTHUMBERLAND COUNTY...JUST EAST OF SELINSGROVE BY AROUND 435 PM. AND BY 530 PM THE STRONG STORMS SHOULD BE IN CENTRAL SCHUYLKILL COUNTY...JUST SOUTH OF HAZELTON. IF THREATENING WEATHER APPROACHES...SEEK SHELTER IMMEDIATELY. WSO HAR RBH
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, 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, 7:21 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 39 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.