Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 31, NWS Cleveland, OH
NWS Cleveland, OH issued this severe thunderstorm warning at Jun 18, 1990, 11:14 AM EDT for Potter County, Pennsylvania. It was in force for 61 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, 11:14 AM EDT (15:14 UTC)
- Expired
- Jun 18, 1990, 12:15 PM EDT
- In force
- 61 min
- Issued by
- NWS Cleveland, OH
- Area
- Whole counties
County Potter 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, 11:40 AM EDT | Hail 0.75 | Potter, 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, 3.2 hours before the alert went out and 147 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 181514
SVRERI
PAC105-181615-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ERIE PA
1114 AM EDT MON JUN 18 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
AND FLASH FLOOD WARNING EFFECTIVE UNTIL 1215 PM EDT FOR PEOPLE
IN THE FOLLOWING COUNTY
IN THE NORTHWEST PART OF PENNSYLVANIA
POTTER
AT 1100 AM EDT WEATHER RADAR SHOWED A SEVERE THUNDERSTORM JUST
NORTH OF COUDERSPORT IN POTTER COUNTY. THIS STORM IS PRODUCING
TORRENTIAL DOWNPOURS AND WILL BE ACCOMPANIED BY STRONG WINDS...
DANGERSOUS LIGHTNING AND POSSIBLE HAIL.
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE FOR
DAMAGING WINDS...LARGE HA"IL 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, 5:19 AM EDT, 5 hours 55 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, 5 hours 44 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, 5 hours 4 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
Special weather statement, Jun 18, 10:17 AM EDT, 57 minutes before
PAZ003-181600- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE YOUNGSTOWN OH 1016 AM EDT MON JUN 18 1990 THUNDERSTORMS WITH HEAVY RAIN WERE MOVING THROUGH LAWRENCE COUNTY PENNSYLVANIA THIS MORNING. AT 1010 AM NATIONAL WEATHER SERVICE RADAR INDICATED A LINE OF THUNDERSTORMS FROM FRANKLIN PENNSYLVAINA THROUGH NEWCASTLE TO THE OHIO-PENNSYLVANIA BORDER. THESE STORMS WERE MOVING EAST AT 35 MPH AND WILL MOVE OUT OF LAWRENCE COUNTY BY 11 AM. VERvY HEAVY RAIN... STRONG GUSTY WINDS AND SMALL HAIL ARE POSSIBLE WITH THE PASSAGE OF THESE STORMS. APFEL
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, 9:08 AM EDT | Severe Thunderstorm Warning | CLE | McKean | 67 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 |
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.