Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 2, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this severe thunderstorm warning at Feb 16, 1990, 4:15 PM EST for Beaver County, Butler County, Pennsylvania. It was in force for 60 min. 3 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
- Feb 16, 1990, 4:15 PM EST (21:15 UTC)
- Expired
- Feb 16, 1990, 5:15 PM EST
- In force
- 60 min
- Issued by
- NWS Pittsburgh, PA
- Area
- Whole counties
Counties Beaver County, PA, Butler 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 |
|---|---|---|---|
| Feb 16, 4:45 PM EST | Thunderstorm Wind 0 | Beaver, PA | |
| Feb 16, 4:53 PM EST | Hail 0.75 | Butler, PA | |
| Feb 16, 5:14 PM EST | Thunderstorm Wind 0 | Butler, 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
Pittsburgh, PA (KPIT), launched 12:00Z, 9.3 hours before the alert went out and 43 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
- 1 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 682 m above ground
- 0-6 km bulk shear
- 75 kt
- 0-1 km storm-relative helicity
- 244 m²/s²
- 0-3 km storm-relative helicity
- 224 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 KPIT 162118 RRA
SVRPIT
PAC007-019-162215-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PITTSBURGH PA
415 PM EST FRI FEB 16 1990
THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 515 PM EST
FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN WEST PENNSYLVANIA
...BEAVER...BUTLER.
AT 415 PM WEATHER RADAR SHOWED A STRONG THUNDERSTORM JUST WEST
OF EAST LIVERPOOL OHIO. IT IS MOVING TOWARD THE NORTHEAST AT
50 MPH. THIS THUNDERSTORM WILL BECOME SEVERE AS IT ENTERS
BEAVER COUNTY AROUND 430 PM. IT WILL MOVE INTO BUTLER COUNTY BEFORE
5 PM.
THIS STORM WILL PRODUCE WINDS AT OR ABOVE 50 MPH...HAIL...AND HEAVY
RAI!N.
A TORNADO WATCH IS ALSO IN EFFECT FOR MOST OF WESTERN PENNSYLVANIA.
REMEMBER SEVERE THUNDERSTORMS CAN OCCASIONALLY PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING. REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.The office that day
Everything else NWS Pittsburgh, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 15, 10:45 PM EST | Flash Flood Warning | PBZ | Butler | 3 hr |
| Feb 16, 5:10 PM EST | Severe Thunderstorm Warning | PBZ | Armstrong | 65 min |
| Feb 16, 5:27 PM EST | Severe Thunderstorm Warning | PBZ | Westmoreland | 63 min |
| Feb 16, 5:48 PM EST | Severe Thunderstorm Warning | PBZ | Washington | 49 min |
| Feb 16, 5:48 PM EST | Severe Thunderstorm Warning | PBZ | Indiana | 49 min |
| Feb 16, 6:37 PM EST | Severe Thunderstorm Warning | PBZ | Clearfield, Jefferson | 53 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.