Alert archive / Ohio / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 99, NWS Cleveland, OH
NWS Cleveland, OH issued this severe thunderstorm warning at Jul 27, 1997, 7:31 PM EDT for Knox County, Ohio. It was in force for 44 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 27, 1997, 7:31 PM EDT (23:31 UTC)
- Expired
- Jul 27, 1997, 8:15 PM EDT
- In force
- 44 min
- Issued by
- NWS Cleveland, OH
- Area
- Whole counties
County Knox County, OH
The radar
The Cleveland radar (KCLE), 122 km from the middle of the area, began a volume at 23:35 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 27, 7:34 PM EDT | Thunderstorm Wind | Centerburg, OH |
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.
The nearest sounding before it
Cncnati-Daytn, OH (KILN), launched 12:00Z, 11.5 hours before the alert went out and 160 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
- 2569 J/kg
- Mixed-layer CIN
- -72 J/kg
- Mixed-layer LCL
- 889 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 148 m²/s²
- 0-3 km storm-relative helicity
- 133 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 9.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KCLE 272333 RRA SVRCLE OHC083-280015- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CLEVELAND OH 731 PM EDT SUN JUL 27 1997 THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 815 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN OHIO ...KNOX COUNTY AT 730 PM...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM NEAR CENTERBURG. IT WAS MOVING SOUTHEAST AT 30 MPH AND WILL AFFECT THE COMMUNITIES OF BRANDON AND MARTINSBURG. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. GABRIC
The office that day
Everything else NWS Cleveland, OH issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 26, 8:15 PM EDT | Severe Thunderstorm Warning | CLE | Morrow | 60 min |
| Jul 26, 8:37 PM EDT | Severe Thunderstorm Warning | CLE | Richland | 68 min |
| Jul 26, 8:44 PM EDT | Severe Thunderstorm Warning | CLE | Knox | 46 min |
| Jul 26, 9:09 PM EDT | Severe Thunderstorm Warning | CLE | Ashland | 66 min |
| Jul 26, 9:19 PM EDT | Tornado Warning | CLE | Knox | 41 min |
| Jul 26, 9:52 PM EDT | Severe Thunderstorm Warning | CLE | Morrow | 53 min |
| Jul 26, 9:54 PM EDT | Flash Flood Warning | CLE | Knox | 2 hr |
| Jul 26, 10:08 PM EDT | Severe Thunderstorm Warning | CLE | Marion | 52 min |
| Jul 26, 10:15 PM EDT | Flash Flood Warning | CLE | Marion, Morrow | 3 hr |
Nearby
Severe Thunderstorm Warnings in Ohio, 1997Every severe thunderstorm warning in 1997
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; radar from the NEXRAD Level II archive.