Alert archive / Pennsylvania / Tornado Warnings in 1991
Tornado Warning 5, NWS Cleveland, OH
NWS Cleveland, OH issued this tornado warning at Jul 23, 1991, 1:00 PM EDT for Lawrence County, Pennsylvania. It was in force for 45 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
- Jul 23, 1991, 1:00 PM EDT (17:00 UTC)
- Expired
- Jul 23, 1991, 1:45 PM EDT
- In force
- 45 min
- Issued by
- NWS Cleveland, OH
- Area
- Whole counties
County Lawrence County, PA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 23, 1:00 PM EDT | Tornado F0 | Lawrence, 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, 5.0 hours before the alert went out and 68 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
- 1248 J/kg
- Mixed-layer CIN
- -48 J/kg
- Mixed-layer LCL
- 1003 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 126 m²/s²
- 0-3 km storm-relative helicity
- 72 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 1.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KYNG 231701 TORYNG PAC073-231745- BULLETIN - EBS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE YOUNGSTOWN OH 100 PM EDT TUE JUL 23 1991 THE NATIONAL WEATHER SERVICE IN YOUNGSTOWN HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 145 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN NORTHWEST PENNSYLVANIA ...LAWRENCE COUNTY STORM SPOTTERS REPORTED TWO FUNNEL CLOUDS NEAR POLAND...MAHONING COUNTY...OHIO. THESE FUNNEL CLOUDS WERE MOVING EAST TOWARD LAWRENCE COUNTY...PENNSYLVANIA. THIS SEVERE WEATHER SITUATION COULD PRODUCE POSSIBLE TORNADO ACTIVITY IN LAWRENCE COUNTY BETWEEN 100 PM AND 130 PM EDT. IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS A BASEMENT. GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER IN AN INTERIOR ROOM SUCH AS A CLOSET ON THE LOWEST FLOOR. USE BLANKETS...PILLOWS... OR CUSHIONS TO COVER YOUR BODY. AVOID WINDOWS. NICK
What forecasters said that day
The local office's own words before this tornado 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, Jul 23, 10:01 AM EDT, 2 hours 59 minutes before
OHZALL-241200- SEVERE WEATHER OUTLOOK FOR OHIO...UPDATED... NATIONAL WEATHER SERVICE CLEVELAND OHIO 1001 AM EDT TUE JUL 23 1991 ISOLATED SEVERE THUNDERSTORMS ARE POSSIBLE ACROSS CENTRAL... EAST CENTRAL AND SOUTHERN OHIO THIS AFTERNOON. A COLD FRONT MOVING SOUTHEAST INTO OHIO THIS AFTERNOON ALONG WITH HOT TEMPERATURES AND HIGH MOISTURE LEVELS WILL CONTRIBUTE TO THUNDERSTORMS OVER MUCH OF OHIO THIS AFTERNOON. SOME OF THE THUNDERSTORMS COULD REACH SEVERE LEVELS AND PRODUCE MAINLY STRONG WINDS IN EXCESS OF 60 MPH. SOME LARGE HAIL WILL ALSO BE POSSIBLE. THE COLD FRONT SHOULD CLEAR CENTRAL OHIO AROUND THREE OR FOUR O'CLOCK THIS AFTERNOON AND BE SOUTH OF THE OHIO RIVER BY SEVEN OR EIGHT O'8CLOCK THIS EVENING. THIS WILL END THE THREAT OF THUNDERSTORMS. ECKERT
Special weather statement, Jul 23, 11:12 AM EDT, 1 hour 48 minutes before
PAZ-001-002-003-231700- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ERIE, PA 1105 AM EDT TUE JUL 23 1991 ...THUNDERSTORMS ARE DEVELOPING RAPIDLY IN NORTHWEST PENNSYLVANIA... AT 11 AM ERIE WEATHER RADAR SHOWED A LINE OF STRONG THUNDERSTORMS SITUATED FROM WESTERN CRAWFORD COUNTY AND EXTENDING EAST INTO WARREN AND MCKEAN COUNTYS. THE LINE WAS MOVING TO THE SOUTHEAST AT AROUND 20 MILES AN HOUR. THESE STORMS ARE CAPABLE OF PRODUCING VERY HEAVY DOWNPOURS...STRONG AND GUSTY WINDS AND HAIL. THE THUNDERSTORMS ARE ASSOCIATED WITH A COLD FRONT THAT WILL BE PUSHING SOUTHEAST ACROSS NORTHWEST PENNSYLVANIA...THROUGHOUT THE AFTERNOON HOURS. SANDSTROM/LAMBERT
Special weather statement, Jul 23, 12:11 PM EDT, 49 minutes before
OHZ004-007-231800- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AKRON CANTON OH 1210 PM EDT TUE JUL 23 1991 THUNDERSTORMS PRODUCING TORRENTIAL DOWNPOURS..STRONG WINDS...AND HAIL WERE MOVING INTO NORTHEAST OHIO THIS AFTERNOON. AT 1205 PM EDT WEATHER RADAR INDICATED A LINE OF THUNDERSTORMS FROM NORTHERN PORTAGE COUNTY SOUTHWEST THROUGH MEDINA TO NEAR MANSFIELD. THIS LINE WAS MOVING EAST AT 30 MPH AND WILL BE MOVING THROUGH AKRON BETWEEN 12:30 AND 1:30 THIS AFTERNOON AND THROUGH THE CANTON AREA BETWEEN 1 AND 2PM. PEOPLE IN NORTHEAST OHIO SHOULD REMAIN ALERT FOR THREATENING WEATHER AND BE PREPARED TO MOVE TO A PLACE OF SAFETY. BRIEF FLOODING OF ROADS AND LOW LYING AREAS IS ALSO LIKELY WITH THESE STORMS. THOMPSON
The office that day
Everything else NWS Cleveland, OH issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 23, 11:40 AM EDT | Severe Thunderstorm Warning | CLE | McKean | 65 min |
| Jul 23, 12:39 PM EDT | Severe Thunderstorm Warning | CLE | Lawrence, Mercer | 66 min |
| Jul 23, 1:49 PM EDT | Severe Thunderstorm Warning | CLE | Cameron, Elk | 56 min |
Nearby
Tornado Warnings in Pennsylvania, 1991Every tornado warning in 1991Tornadoes 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.