Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 2, NWS State College, PA

February 16, 1990Tioga County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Feb 16, 1990, 7:00 PM EST for Tioga County, Pennsylvania. It was in force for 60 min. 1 report 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
Feb 16, 1990, 7:00 PM EST (00:00 UTC)
Expired
Feb 16, 1990, 8:00 PM EST
In force
60 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

TimeReportWhereRemark
Feb 16, 7:20 PM ESTThunderstorm Wind 0Tioga, 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 00:00Z, 0.0 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.

Skew-T log-pSkew-T log-p diagram, Buffalo Intl Airport, NY at 00:00Z on 1990-02-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Buffalo Intl Airport, NY at 00:00Z on 1990-02-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -153 square meters per square second.1939587897117136156Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
606 m above ground
0-6 km bulk shear
104 kt
0-1 km storm-relative helicity
-153 m²/s²
0-3 km storm-relative helicity
-223 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KIPT 170001
SVRIPT
PAC117-170100-

BULLETIN-EBS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE WILLIAMSPORT PA
700 PM EST FRI FEB 16 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 800 PM EST FOR PEOPLE IN THE FOLLOWING COUNTIES OF

NORTHCENTRAL PENNSYLVANIA...TIOGA

AT 655 PM EST...TIOGA COUNTY EMA REPORTED THAT WESTFIELD IN NORTHWEST
TIOGA COUNTY HAD SEVERE WINDS AND MARBLE SIZE HAIL.  

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.

THERE IS ALSO A THREAT OF TORNADOES IN THIS AREA.

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

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, Feb 16, 5:34 PM EST, 1 hour 26 minutes before
PAZ007-008-014-170030-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILLIAMSPORT PA
530 PM EST FRI FEB 16 1990

...TORNADO WATCH FOR BRADFORD...CLINTON...LYCOMING...SULLIVAN AND
TIOGA COUNTIES OF NORTHCENTRAL PENNSYLVANIA UNTIL 9 PM EST THIS FRIDAY
EVENING...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 9 PM THIS FRIDAY EVENING FOR
BRADFORD...CLINTON...LYCOMING...SULLIVAN AND TIOGA COUNTIES OF
NORTHCENTRAL PENNSYLVAINA.

AT 530 PM EST NATIONAL WEATHER SERVICE RADARS INDICATED A LINE OF
SHOWERS AND THUNDERSTORMS IN WESTERN PENNSYLVANIA. SEVERE
THUNDERSTORMS HAVE OCCURED IN SOUTHWEST AS WELL AS NORTHWEST
PENNSYLVANIA PRODUCING LARGE HAIL...DAMAGING WINDS AND HEAVY DOWNPOURS
OF RAIN. THE LINE OF THUNDERSTORMS WAS MOVING EAST AT 35 MPH.

NO SEVERE WEATHER HAS OCCURED IN NORTHCENTRAL PENNSYLVANIA
HOWEVER...THE POTENTIAL EXISTS FOR SEVERE THUNDERSTORMS AND POSSIBLE
TORNADOES THIS FRIDAY EVENING.

STAY TUNED TO NOAA WEATHER RADIO ORd YOUR LOCAL TELEVISION AND RADIO
STATIONS FOR LATER STATEMENTS...WATCHES OR WARNINGS.

JSN
Special weather statement, Feb 16, 6:03 PM EST, 57 minutes before
PAZ013-014-08-170100

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HARRISBURG PA.
600 PM EST FRI FEB 16 1990

...TORNADO WATCH FOR CENTRE...HUNTINGDON AND UNION COUNTIES OF CENTRAL
   PENNSYLVANIA UNTIL 9 PM EST FRIDAY...

AT 557 PM EST HARRISBURG WEATHER RADAR WAS SHOWING A LINE OF SHOWERS AND
THUNDERSTORMS IN WESTERN PENNSYLVANIA...CURRENTLY AT 557 PM EST THE LINE
EXTENDED FROM WESTERN CLINTON COUNTY SOUTHWEST TO WESTERN WESTMORLAND COUNTY.

THE STORMS IN PORTIONS OF THE WEST HAVE ALREADY PRODUCED LARGE HAIL...
DAMAGING WINDS AND HEAVY DOWNPOURS OF RAIN.  NO SEVERE WEATHER HAS YET
OCCURED IN CENTRAL PENNSYLVANIA. HOWEVER THE POTENTIAL EXISTS FOR SEVERE
THUNDERSTORMS AND POSSIBLY A TrORNADO THIS FRIDAY EVENING.

PLEASE STAY TUNED FOR THE LATEDS UPDATES AND DEVELOPMENTS.

WSO HAR RBH
Special weather statement, Feb 16, 6:56 PM EST, 4 minutes before
PAZ013-014-08-170100

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HARRISBURG PA.
655 PM EST FRI FEB 16 1990

...TORNADO WATCH FOR CENTRE...HUNTINGDON AND UNION COUNTIES OF CENTRAL
   PENNSYLVANIA UNTIL 9 PM EST FRIDAY...

AT 650 PM EST HARRISBURG WEATHER RADAR WAS SHOWING A LINE OF SHOWERS AND
THUNDERSTORMS IN WESTERN PENNSYLVANIA...CURRENTLY AT 650 PM THERE WAS A SEVERE
SEVER THUNDERSTORM IN THE SOUTHERN PORTION OF CLEARFIELD COUNTY. THIS STORM
HAS ALREADY PRODUCED WIND GUSTS OF 80 MPH WHEN IT WENT OVER INDIANA PA AT
615 PM. THE STORM IS MOVING EAST AT 30 MPH.

PLEASE STAY TUNED FOR THE LATEST UPDATES.

WSO HAR RBH

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.