Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1991
Severe Thunderstorm Warning 150, NWS Cleveland, OH
NWS Cleveland, OH issued this severe thunderstorm warning at Aug 19, 1991, 4:37 PM EDT for Crawford County, Pennsylvania. It was in force for 68 min. 4 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
- Aug 19, 1991, 4:37 PM EDT (20:37 UTC)
- Expired
- Aug 19, 1991, 5:45 PM EDT
- In force
- 68 min
- Issued by
- NWS Cleveland, OH
- Area
- Whole counties
County Crawford County, PA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 19, 5:00 PM EDT | Thunderstorm Wind 0 | Crawford, PA | |
| Aug 19, 5:00 PM EDT | Thunderstorm Wind 0 | Crawford, PA | |
| Aug 19, 5:15 PM EDT | Thunderstorm Wind 0 | Crawford, PA | |
| Aug 19, 5:30 PM EDT | Thunderstorm Wind 0 | Crawford, 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, 8.6 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
- 658 J/kg
- Mixed-layer CIN
- -32 J/kg
- Mixed-layer LCL
- 713 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- -13 m²/s²
- 0-3 km storm-relative helicity
- 7 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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, Aug 19, 2:37 PM EDT, 2 hours before
OHZALL-192030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CLEVELAND OHIO 235 PM EDT MON AUG 19 1991 A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 6 PM FOR MOST OF CENTRAL AND SOUTHEAST OHIO. THE WATCH COVERS MOST OF THE STATE SOUTH AND EAST OF A LINE FROM ABOUT 40 MILES SOUTHEAST OF CINCINNATI... TO 30 MILES NORTHWEST OF COLUMBUS... TO 10 MILES SOUTH OF YOUNGSTOWN. MAJOR CITIES IN THE WATCH AREA INCLUDE COLUMBUS... IRONTON... AND ZANESVILLE. AT 230 PM WEATHER SERVICE RADAR SHOWED SCATTERED STRONG THUNDERSTORMS OVER THE PARTS OF OHIO SOUTH AND EAST OF COLUMBUS. THESE STORMS WERE MOVING EAST AT 30 MPH. IF THEY MAINTAIN THIS COURSE... THEY WILL BE OUT OF THE STATE BY 5 PM. OTHER STORMS COULD AFFECT VARIOUS PARTS OF OHIO THIS EVENING... BUT ARE UNLIKELY TO PRODUCE SEVERE WEATHER. NO CONFIRMED REPORTS OF SEVERE WEATHER WERE RECEIVED BY THE WEATHER SERVICE IN OHIO BETWEEN NOON AND 235 PM. HOWEVER... DAMAGING WINDS... LARGE HAIL... AND HEAVY DOWNPOURS REMAIN A POSSIBILITY IN THE WATCH AREA AND PEOPLE THERE SHOULD REMAIN ALERT FOR THREATENING CONDITIONS. KWIATKOWSKI
Special weather statement, Aug 19, 2:41 PM EDT, 1 hour 56 minutes before
OHZ004-007-192000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AKRON CANTON OH 240 PM EDT MON AUG 19 1991 THUNDERSTORMS WERE CONTINUING TO RUMBLE THROUGH EASTERN OHIO THIS AFTERNOON WITH HEAVY RAINS AND GUSTY WINDS. AT 235 PM WEATHER RADAR INDICATED THUNDERSTORMS IN A LINE FROM NEAR YOUNGSTOWN SOUTH TO MARIETTA. THIS LINE WAS MOVING TOWARD THE EAST AT 25 MPH AND WILL BE OUT OF OHIO BY 4 PM. HEAVIEST RAINFALL WAS OCCURRING IN BELMONT...MNOBLE...AND MONROE COUNTIES. GUSTY WINDS AND SMALL HAIL COULD ALSO ACCOMPANY SOME OF THESE STORMS. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 6 PM FOR PARTS OF NORTHEAST AND ALL OF EAST CENTRAL AND SOUTHEAST OHIO. THOMPSON
Special weather statement, Aug 19, 2:47 PM EDT, 1 hour 50 minutes before
OHZALL-182000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CLEVELAND OH 247 PM EDT MON AUG 19 1991 SEVERE THUNDERSTORM WATCH NUMBER 737 HAS BEEN CANCELLED FOR PART OF OHIO. THE WATCH IS NO LONGER IN EFFECT FOR THE FOLLOWING COUNTIES... ...NORTHEAST INLAND... CARROLL COLUMBIANA JEFFERSON STARK WAYNE ...CENTRAL... DELAWARE FAIRFIELD FAYETTE FRANKLIN HOCKING KNOX LICKING MADISON PERRY PICKAWAY ROSS UNION THE WATCH REAMINS IN EFFECT FOR SOUTHEASTERN OHIO UNTIL 600 PM EDT. JOHNSON
Special weather statement, Aug 19, 2:51 PM EDT, 1 hour 46 minutes before
OHZALL-192000- SPECIAL WEATHER STATEMENT...CORRECTED NATIONAL WEATHER SERVICE CLEVELAND OH 251 PM EDT MON AUG 19 1991 SEVERE THUNDERSTORM WATCH NUMBER 737 HAS BEEN CANCELLED FOR PART OF OHIO. THE WATCH IS NO LONGER IN EFFECT FOR THE FOLLOWING COUNTIES... ...NORTHEAST INLAND... CARROLL COLUMBIANA JEFFERSON STARK WAYNE ...CENTRAL... DELAWARE FAIRFIELD FAYETTE FRANKLIN HOCKING KNOX LICKING MADISON PERRY PICKAWAY ROSS UNION THE WATCH REAMINS IN EFFECT FOR SOUTHEASTERN OHIO UNTIL 600 PM EDT. JOHNSON/CORRECTED CODE.
Special weather statement, Aug 19, 3:08 PM EDT, 1 hour 29 minutes before
OHZ004-007-192000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AKRON CANTON OH 306 PM EDT MON AUG 19 1991 THE SEVERE THUNDERSTORM WATCH FOR NORTHEAST OHIO HAS BEEN CANCELLED BUT REMAINS IN EFFECT FOR EAST CENTRAL AND SOUTHEAST OHIO UNTIL 6PM EDT. AT 3 PM EDT WEATHER RADAR INDICATED A LINE OF THUNDERSTORMS IN EXTREME EASTERN OHIO FROM EAST LIVERPOOL TO MARIETTA. THIS LINE WAS MOVING EAST AT 25 MPH AND WILL BE ACROSS THE OHIO RIVER BY 4PM. HEAVY RAINS AND GUSTY WINDS CAN BE EXPECTED WITH THESE STORMS OVER JEFFERSON...BELMONT...MONROE AND WASHINGTON COUNTIES UNTIL 4PM. THOMPSON
Special weather statement, Aug 19, 3:54 PM EDT, 43 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ERIE, PA 345 PM EDT MON AUG 19 1991 ...STRONG THUNDERSTORMS ARE DEVELOPING IN PARTS OF NORTHWEST PENNSYLVANIA... AT 340 PM RADAR SHOWED AN AREA OF SHOWERS AND THUNDERSTORMS IN WESTERN PENNSYLVANIA REACHING NORTHWARD INTO CRAWFORD COUNTY. THE STRONGEST THUNDERSTORM WERE NEAR MEADVILLE. OTHER THUNDERSTORMS EXTENDED WESTWARD ACROSS NORTHERN OHIO. MOVEMENT OF THESE STORMS HAS BEEN ERATIC...BUT GENE'RALLY TOWARDS THE NORTH NORTHWEST. SOME OF THESE STORMS WILL PRODUCE DANGEROUS LIGHTNING...STRONG GUSTY WINDS ...SMALL HAIL AND HEAVY DOWNPOURS. PARRISH
The office that day
Everything else NWS Cleveland, OH issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 19, 11:58 AM EDT | Severe Thunderstorm Warning | CLE | Holmes | 62 min |
| Aug 19, 4:30 PM EDT | Flash Flood Warning | CLE | Ottawa | 60 min |
| Aug 19, 4:33 PM EDT | Tornado Warning | CLE | Geauga | 42 min |
| Aug 19, 5:12 PM EDT | Flash Flood Warning | CLE | Erie, Huron | 2 hr |
| Aug 19, 5:28 PM EDT | Flash Flood Warning | CLE | Ottawa | 2 hr |
| Aug 19, 7:51 PM EDT | Flash Flood Warning | CLE | Ottawa | 2 hr |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 1991Every severe thunderstorm warning in 1991
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.