Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 12, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at Jun 18, 1990, 11:00 AM EDT for Tioga County, Pennsylvania. It was in force for 30 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 18, 1990, 11:00 AM EDT (15:00 UTC)
- Expired
- Jun 18, 1990, 11:30 AM EDT
- In force
- 30 min
- Issued by
- NWS State College, PA
- Area
- Whole counties
County Tioga 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 18, 11:05 AM EDT | Hail 1.75 | Tioga, PA | |
| Jun 18, 11:30 AM EDT | Hail 0.75 | Tioga, 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, 3.0 hours before the alert went out and 175 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
- 2093 J/kg
- Mixed-layer CIN
- -11 J/kg
- Mixed-layer LCL
- 690 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 187 m²/s²
- 0-3 km storm-relative helicity
- 153 m²/s²
- Significant tornado parameter
- 1.3
- Supercell composite
- 7.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KIPT 181500 SVRIPT PAC117-181530- BULLETIN-IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE WILLIAMSPORT PA 1100 AM EDT MON JUN 18 1990 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1130 AM EDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF NORTHCENTRAL PENNSYLVANIA..TIOGA AT 1055 AM EDT TIOGA COUNTY EMERGENCY MANAGEMENT OFFICIALS REPORTED HAIL RANGING IN SIZE FROM PEA TO GOLFBALL IN WELLSBORO. 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. JSN
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 18, 10:28 AM EDT, 32 minutes before
PAZ007-008-014-181600- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILLIAMSPORT PA 1030 AM EDT JUN MON 18 1990 ...SEVERE THUNDERSTORM WATCH ISSUED FOR PART OF NORTHCENTRAL PENNSYLVANIA UNTIL 200 PM THIS MONDAY AFTERNOON... ...THUNDERSTORMS MOVING THROUGH NORTHWEST CLINTON AND NORTHERN TIOGA COUNTIES... AT 1025 AM EDT NATIONAL WEATHER SERVICE RADAR SHOWED AN AREA OF SHOWERS AND THUNDERSTORMS EXTENDING FROM CENTRAL NEW YORK INTO CENTRAL PENNSYLVANIA. IN NORTHCENTRAL PENNSYLVANIA...THE HEAVIEST THUNDERSTORMS WERE LOCATED IN NORTHERN CLINTON AND WESTERN TIOGA COUNTY. THE THUNDERSTORMS WERE MOVING EAST AT 40 TO 45 MILES AN HOUR. THESE THUNDERSTORMS WILL CONTINUE TO MOVE ACROSS NORTHCENTRAL PENNSYLVANIA THE REST OF THIS MORNING AND EARLY THIS AFTERNOON. A SEVERE THUNDERSTORM WATCH MEANS THAT SEVERE THUNDERSTORMS ARE POSSIBLE. SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 58 MPH...LARGE HAIL...DANGEROUS LIGHTNING AND HEAVY DOWNPOURS. IF THREATENING WEATHER APPROACHES YOU SHOULD GO TO A SAFE PLACE IMMEDIATELY. HM
Special weather statement, Jun 18, 10:38 AM EDT, 22 minutes before
PAZ007-008-014-181600-
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILLIAMSPORT PA
1030 AM EDT JUN MON 18 1990
...SEVERE THUNDERSTORM WATCH ISSUED FOR PART OF NORTHCENTRAL
PENNSYLVANIA UNTIL 200 PM THIS MONDAY AFTERNOON...
...THUNDERSTORMS MOVING THROUGH NORTHERN CLINTON AND TIOGA
COUNTIES...
AT 1025 AM EDT NATIONAL WEATHER SERVICE RADAR SHOWED AN AREA OF
SHOWERS AND THUNDERSTORMS EXTENDING FROM CENTRAL NEW YORK
INTO CENTRAL PENNSYLVANIA. IN NORTHCENTRAL PENNSYLVANIA...THE
HEAVIEST THUNDERSTORMS WERE LOCATED IN NORTHERN CLINTON AND
WESTERN TIOGA COUNTY. THE THUNDERSTORMS WERE MOVING EAST AT 40 TO 45
MILES AN HOUR.
THESE THUNDERSTORMS WILL CONTINUE TO MOVE ACROSS NORTHCENTRAL
PENNSYLVANIA THE REST OF THIS MORNING AND EARLY THIS AFTERNOON.
A SEVERE THUNDERSTORM WATCH MEANS THAT SEVERE THUNDERSTORMS ARE
POSSIBLE. SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 58
MPH...LARGE HAIL...DANGEROUS LIGHTNING AND HEAVY DOWNPOURS.
IF THREATENING WEATHER APPROACHES YOU SHOULD GO TO A SAFE PLACE
IMMEDIATELY.
HM
CORRECT HEADLINEThe office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 18, 11:25 AM EDT | Severe Thunderstorm Warning | CTP | Bradford | 60 min |
| Jun 18, 11:30 AM EDT | Severe Thunderstorm Warning | CTP | Tioga | 60 min |
| Jun 18, 3:33 PM EDT | Severe Thunderstorm Warning | CTP | Adams | 57 min |
| Jun 18, 3:44 PM EDT | Severe Thunderstorm Warning | CTP | Monroe, Northampton | 76 min |
| Jun 18, 3:44 PM EDT | Severe Thunderstorm Warning | CTP | Pike | 76 min |
| Jun 18, 3:53 PM EDT | Severe Thunderstorm Warning | CTP | Northumberland | 67 min |
| Jun 18, 4:24 PM EDT | Severe Thunderstorm Warning | CTP | Carbon | 53 min |
| Jun 18, 4:24 PM EDT | Severe Thunderstorm Warning | CTP | Lehigh, Northampton | 51 min |
| Jun 18, 4:24 PM EDT | Severe Thunderstorm Warning | CTP | Schuylkill | 51 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.