Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 27, NWS Cleveland, OH
NWS Cleveland, OH issued this severe thunderstorm warning at Jun 9, 1990, 6:46 AM EDT for Forest County, Pennsylvania. It was in force for 44 min.
The area
The counties it named.
The facts
- Issued
- Jun 9, 1990, 6:46 AM EDT (10:46 UTC)
- Expired
- Jun 9, 1990, 7:30 AM EDT
- In force
- 44 min
- Issued by
- NWS Cleveland, OH
- Area
- Whole counties
County Forest 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
Pittsburgh, PA (KPIT), launched 00:00Z, 10.8 hours before the alert went out and 142 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
- 1817 J/kg
- Mixed-layer CIN
- -11 J/kg
- Mixed-layer LCL
- 1091 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 192 m²/s²
- 0-3 km storm-relative helicity
- 233 m²/s²
- Significant tornado parameter
- 1.0
- Supercell composite
- 10.6
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KERI 091046
SVRERI
PAC053-091130-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ERIE PA
646 AM EDT SAT JUN 9 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 730 AM EDT FOR PEOPLE IN THE FOLLOWING
COUNTY
IN THE NORTHWEST PART OF PENNSYLVANIA
SOUTHEAST FOREST
AT (630AM THIS SATURDAY MORNING WEATHER SERVICE RADAR IN ERIE INDICATED
TRONG THUNDERSTORM OCCURING OVER SOUTHEASTERN FOREST COUNTY. THIS CELL
LOCATED JUST SOUTH OF MARIENVILLE AND WAS MOVING RAPIDLY EAST AT 35 TO
MILES AN HOUR.
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE FOR
DAMAGING WINDS...LARGE HAIL AND DANGEROUS LIGHTNING. PEOPLE OUTSIDE
SHOULD MOVE TO SHELTER. STAY AWAY FROM WINDOWS.
WSO ERIWhat 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 9, 12:50 AM EDT, 5 hours 56 minutes before
OHZALL-090650- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CLEVELAND OH 1250 AM EDT SAT JUN 9 1990 A TORNADO WATCH CONTINUES IN EFFECT FOR THE SOUTH HALF OF OHIO UNTIL 3 AM. AT 1240 AM WEATHER SERVICE RADAR SHOWED WIDESPREAD SHOWERS AND THUNDERSTORMS OVER THE PARTS OF OHIO EAST AND SOUTH OF COLUMBUS. OTHER PORTIONS OF THE BUCKEYE STATE HAD ISOLATED SHOWERS AND THUNDERSTORMS. THERE WAS ALSO AN AREA OF SHOWERS AND THUNDERSTORMS ABOUT TO ENTER WEST CENTRAL OHIO FROM INDIANA. MOST OF THE PRECIPITATION THAT WAS IN OR NEAR OHIO AT 1240 AM WAS MOVING EAST AT AROUND 40 MPH. SHOWERS AND THUNDERSTORMS SHOULD CONTINUE TO AFFECT MAINLY THE SOUTHERN PARTS OF THE STATE FOR MUCH OF THE EARLY MORNING. NO SEVERE WEATHER WAS REPORTED IN OHIO FROM 1130 PM TO 1240 AM. HOWEVER THERE IS STILL A POSSIBILITY OF HAIL... DAMAGING WINDS... OR EVEN TORNADOES IN THE SOUTHERN PART OF THE STATE. RESIDENTS OF THE TORNADO WATCH AREA SHOULD REMAIN ALERT FOR THREATENING WEATHER AND HAVE A PLACE OF SHELTER IN MIND. ANOTHER WEATHER PROBLEM OHIO MIGHT SEE EARLY THIS MORNING IS VERY HEAVY RAINS. FOR THIS REASON A FLOOD WATCH IS IN EFFECT STATEWIDE FOR THE REST OF TONIGHT. KWIATKOWSKI
Special weather statement, Jun 9, 1:49 AM EDT, 4 hours 57 minutes before
OHZALL-090745- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CLEVELAND OH 150 AM EDT SAT JUN 9 1990 A TORNADO WATCH WILL BE IN EFFECT FOR THE SOUTH HALF OF OHIO UNTIL 3 AM. AT 140 AM WEATHER SERVICE RADAR SHOWED WIDESPREAD SHOWERS AND THUNDERSTORMS OVER EAST CENTRAL AND WEST CENTRAL OHIO. MOST OF THE REST OF OHIO WAS RELATIVELY DRY. THE SHOWERS AND THUNDERSTORMS WERE MOVING EAST AT 35 TO 40 MPH... AND WILL AFFECT MUCH OF THE SOUTHERN HALF OF THE STATE OVER THE EARLY MORNING HOURS. AS OF 140 AM... NO SEVERE WEATHER HAD BEEN REPORTED TO THE WEATHER SERVICE IN OHIO SINCE BEFORE MIDNIGHT. HOWEVER THE SHOWERS AND THUNDERSTORMS THAT WILL AFFECT THE SOUTHERN PART OF THE STATE EARLY THIS MORNING STILL HAVE THE POTENTIAL TO PRODUCE TORNADOES... DAMAGING WINDS... OR HAIL. PEOPLE IN THE WATCH AREA SHOULD CONTINUE TO LISTEN FOR LATEST INFORMATION FROM THE WEATHER SERVICE. IN ADDITION... A FLOOD WATCH IS IN EFFECT FOR ALL OF OHIO FOR THE REST OF TONIGHT. THIS IS BECAUSE THERE IS A THREAT OF HEAVY RAIN AND SOILS IN MANY PARTS OF THE STATES ARE ALREADY WATERLOGGED. KWIATKOWSKI
Special weather statement, Jun 9, 2:50 AM EDT, 3 hours 56 minutes before
OHZALL-090845- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CLEVELAND OH 250 AM EDT SAT JUN 9 1990 THE TORNADO WATCH FOR SOUTHERN OHIO WILL BE ALLOWED TO EXPIRE AT 3 AM. THE FLOOD WATCH FOR MOST OF NORTHERN OHIO WILL BE CANCELED AT 3 AM... BUT A FLOOD WATCH WILL REMAIN IN EFFECT FOR THE CENTRAL AND SOUTHERN COUNTIES THIS MORNING. AT 240 AM WEATHER SERVICE RADAR SHOWED SHOWERS AND THUNDERSTORMS OVER MUCH OF THE SOUTHERN HALF OF OHIO. MOVEMENT WAS MOSTLY EAST AT 35 TO 40 MPH. THE STORMS WERE WEAKENING... AND THE THREAT OF SEVERE WEATHER IN SOUTHERN OHIO WAS DECREASING. AS A RESULT THE TORNADO WATCH THERE WILL BE DROPPED AFTER 3 AM. NORTHERN OHIO WAS NOT GETTING MUCH RAIN EARLY THIS MORNING... AND IS EXPECTED TO RECEIVE ONLY SCATTERED PRECIPITATION DURING THE UPCOMING DAY. FLOODING IS NO LONGER A MAJOR THREAT THERE AND THE FLOOD WATCH HAS BEEN CANCELED. IN CENTRAL AND SOUTHERN OHIO WIDESPREAD HEAVY RAIN COULD STILL OCCUR2 THIS MORNING... AND FLOODING REMAINS A THREAT. RESIDENTS OF THE AREA SHOULD REMAIN ALERT FOR HIGH WATER AND BE PREPARED TO MOVE PROPERTY OUT OF LOW LYING AREAS. KWIATKOWSKI
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.