Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 30, NWS Cleveland, OH
NWS Cleveland, OH issued this severe thunderstorm warning at Jun 18, 1990, 9:08 AM EDT for McKean County, Pennsylvania. It was in force for 67 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
- Jun 18, 1990, 9:08 AM EDT (13:08 UTC)
- Expired
- Jun 18, 1990, 10:15 AM EDT
- In force
- 67 min
- Issued by
- NWS Cleveland, OH
- Area
- Whole counties
County McKean 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, 9:50 AM EDT | Hail 0.75 | Mckean, 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, 1.1 hours before the alert went out and 125 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 KERI 181308
SVRERI
PAC083-181415-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ERIE PA
908 AM EDT MON JUN 18 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 1015 AM EDT FOR PEOPLE IN THE FOLLOWING
COUNTY
IN THE NORTHWEST PART OF PENNSYLVANIA
MCKEAN
AT 905 AM EDT RADAR INDICATED A SEVERE THUNDERSTORM WEST OF CORYDON
IN MCKEAN COUNTY PENNSYLVANIA. THIS STORM WAS MOVING TOWARD THE
EAST AT 25 MILES AN HOUR AND SHOULD MOVE NORTH OF BRADFORD PA
BETWEEN 915 AND 930 AM THIS MORNING.
WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A
STRONG BUILDING. DO NOT STAND NEAR WINDOWS. DO NOT USE TELEPHONES
OR ELECTRICAL APPLIANCES. MOTORISTS SHOULD AVOID LOW WATER CROSSINGS.
IF YOU ARE CAUGHT OUTSIDE...FIND SHELTER IN A NEARBY REINFORCED
BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN AND DANGEROUS
LIGHTNING ARE ALL POSSIBLE IN SEsVERE THUNDERSTORMS.
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE FOR
DAMAGING WINDS...LARGE HAIL AND DANGEROUS LIGHTNING. PEAPLE OUTSIDE
SHOULD MOVE TO SHELTER. STAY AWAY FROM WINDOWS.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, 3:22 AM EDT, 5 hours 46 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CLEVELAND OH 320 AM EDT MON JUN 18 1990 SEVERE THUNDERSTORM WATCH NUMBER 485 HAS BEEN CANCELLED. THE WATCH IS NO LONGER IN EFFECT FOR THE FOLLOWING COUNTIES... ...MIAMI VALLEY... PREBLE ...SOUTHWEST... BUTLER HAMILTON SJN
Special weather statement, Jun 18, 5:19 AM EDT, 3 hours 49 minutes before
OHZALL-191200- SEVERE WEATHER OUTLOOK FOR OHIO NATIONAL WEATHER SERVICE CLEVELAND OH 520 AM EDT MON JUN 18 1990 THE NATIONAL SEVERE STORMS FORECAST CENTER IN KANSAS CITY SAYS THAT THERE IS A SLIGHT CHANfCE OF SEVERE THUNDERSTORMS IN SOUTHEAST OHIO TODAY. NO SEVERE THUNDERSTORMS ARE EXPECTED IN OHIO TONIGHT. SJN
Special weather statement, Jun 18, 5:30 AM EDT, 3 hours 38 minutes before
PAZ001-002-181100 SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ERIE, PA 530 AM EDT MON JUN 18 1990 ...A LINE OF STRONG THUNDERSTORMS ARE HEADED FOR NORTHWEST PENNSYLVANIA AND THE PENNSYLVANIA WATERS OF LAKE ERIE... AT 530 AM ERIE WEATHER RADAR INDICATED A LINE OF STRONG THUNDERSTORMS SITUATED FROM ASHTABULA COUNTY IN OHIO AND EXTENDING NORTH ACROSS LAKE ERIE INTO THE PORT BURWELL AND LONG POINT AREAS. THE LINE WAS MOVING TO THE EAST AT AROUND 45 TO 50 MILES AND HOUR AND WILL BE MOVING INTO PARTS OF NORTHWEST PENNSYLVANIA AND THE PENNSYLVANIA WATERS OF LAKE ERIE...BETWEEN 545 AND 600 AM THIS MORNING. SOME OF THESE STORMS MAY PRODUCE VERY HEAVY RAIN...STRONG AND GUSTY WINDS AND HAIL. SANDSTROM
Special weather statement, Jun 18, 6:10 AM EDT, 2 hours 58 minutes before
OHZ004-007-DDHHHH- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AKRON CANTON OH 610 AM EDT MON JUN 18 1990 AT 600 AM WEATHER SERVICE RADAR SHOWED A LINE OF THUNDERSTORMS OVER EAST CENTRAL OHIO THAT EXTEND FROM NEAR ST. CLAIRSVILLE IN BELMONT COUNTY SOUTH TO MARIETTA IN WASHINGTON COUNTY. THESE STORMS ARE MOVING EAST AT 35 MPH AND COULD PRODUCE LOCALLY HEAVY RAINS... SMALL HAIL... AND BRIEF WIND GUST AS THEY MOVE THROUGH. THESE STORMS SHOU$LD REACH THE OHIO RIVER IN BELMONT AND MONROE COUNTIES BETWEEN 630AM AND 700AM. ALTO
The office that day
Everything else NWS Cleveland, OH issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 18, 5:54 AM EDT | Severe Thunderstorm Warning | CLE | Erie | 66 min |
| Jun 18, 6:53 AM EDT | Severe Thunderstorm Warning | CLE | Erie | 82 min |
| Jun 18, 10:36 AM EDT | Flash Flood Warning | CLE | Elk, McKean | 3 hr |
| Jun 18, 11:14 AM EDT | Flash Flood Warning | CLE | Potter | 61 min |
| Jun 18, 11:14 AM EDT | Severe Thunderstorm Warning | CLE | Potter | 61 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.