Alert archive / Ohio / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 47, NWS Wilmington, OH
NWS Wilmington, OH issued this severe thunderstorm warning at Apr 30, 1997, 9:36 PM EDT for Darke County, Ohio. It was in force for 24 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
- Apr 30, 1997, 9:36 PM EDT (01:36 UTC)
- Expired
- Apr 30, 1997, 10:00 PM EDT
- In force
- 24 min
- Issued by
- NWS Wilmington, OH
- Area
- Whole counties
County Darke County, OH
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 30, 9:43 PM EDT | Thunderstorm Wind 50 | Ansonia, 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 30, 6:30 PM EDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Cncnati-Daytn, OH (KILN), launched 00:00Z, 1.6 hours before the alert went out and 105 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
- 5 J/kg
- Mixed-layer CIN
- -452 J/kg
- Mixed-layer LCL
- 1959 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- 321 m²/s²
- 0-3 km storm-relative helicity
- 540 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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.
NWS Wilmington, OH wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 30, 8:50 PM EDT, 46 minutes earlier.
Area forecast discussion, Apr 30, 8:50 PM EDT, 46 minutes before
FORECAST COORDINATION MESSAGE NATIONAL WEATHER SERVICE WILMINGTON OH 845 PM EDT WED APR 30 1997 KILN RADAR WL LIKELY BE OUT OF SERVICE FOR MUCH OF THE NGT. A SPARE PART MAY BE NECESSARY. WL BE USING KIND AND KLVX RADARS FOR ANY WARNGS...AND POSSBLY KRLX AND KCLE IF THE ACTIVITY SURVIVES EWRD IN MORE STABLE AIR. WIND PROFILE IS WELL SUITED TO SVR WX AS STORM RELATIVE HELICITY VALUE BETWEEN THE GROUND AND 3KM IS 567 FM ILN 00Z SOUNDG. LUCKILY...MOISTURE AND INSTABILITY MARGINAL. STORMS HAVE FOCUSED WHAT MOISTURE IS AVAILABLE INTO LONG NARROW LINE FM NE IN TO WRN KY. STORM MOTION IS NE AT 50-55 MPH. ANY PARTICULAR LOCATION WL SEE TSRA'S LAST LESS THAN ONE HR. STORMS WL ENTER WC OH AROUND 9 PM...BUT WITH LINE HANGG BACK...MAY NOT GET INTO CVG AREA UNTIL JUST AFT 10 PM. HOPE THAT STORMS WEAKEN BY THE TIME THEY GET INTO CMH OR PMH AREAS...BUT COULD STAY SVR INTO CMH. THE SVR ACTIVITY SHOULD END/MOVE E BY 1 AM OR 2 AM...WITH BULK OF ACTIVITY ENDG BY 12 AM. WINDS AT HIGH WIND ADV CRITERIA BEHIND SVR STORMS BUT DO NOT WANT TO CONFUSE ISSUE WITH PUBLIC AND PREFER TO LEAVE HIGH WIND ADV OUT OF OVERNGT FCST AND FOCUS ON SVR THREAT. HAVE NOT HAD A REAL CHC TO LOOK AT REST HOF FCST. SANDLER
In the hours before
Special weather statement, Apr 30, 6:58 PM EDT, 2 hours 38 minutes before
INZ050-058-059-066-073>075-080-OHZ025-026-034-035- 042>045-051>054-060>063-070>072-077>081-010500- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILMINGTON OH 655 PM EDT (555 PM EST) WED APR 30 1997 ...A TORNADO WATCH IS IN EFFECT UNTIL MIDNIGHT EDT FOR SOUTHEAST INDIANA AND MUCH OF WESTERN AND CENTRAL OHIO... AN INTENSE LOW PRESSURE SYSTEM CENTERED ACROSS NORTHERN ILLINOIS WILL MOVE NORTHEAST OVERNIGHT. THE LOW WILL SEND A COLD FRONT THROUGH EASTERN INDIANA...NORTHERN KENTUCKY...WESTERN AND CENTRAL OHIO. EARLY THIS EVENING...A LINE OF THUNDERSTORMS WAS MOVING ACROSS WESTERN INDIANA HEADING EAST. SOME OF THESE STORMS WERE SEVERE WITH LARGE HAIL...HIGH WINDS AND POSSIBLE TORNADOES. THE LINE OF STORMS IS EXPECTED TO EXTEND FROM WEST CENTRAL OHIO THROUGH SOUTHEAST INDIANA BETWEEN 8 PM AND 9 PM...AND THEN WILL LIKELY REACH THE DAYTON AND CINCINNATI AREAS BETWEEN 9 PM AND 10 PM. STORM SPOTTER GROUPS WILL LIKELY BE ACTIVATED TO ASSIST WITH ANY SEVERE STORM WARNINGS THAT MAY NEED TO BE ISSUED THIS EVENING. STAY ALERT AND BE PREPARED FOR THE POSSIBILITY OF SEVERE WEATHER THIS EVENING. SANDLER
Special weather statement, Apr 30, 9:34 PM EDT, 2 minutes before
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</html>The office that day
Everything else NWS Wilmington, OH issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 30, 9:25 PM EDT | Severe Thunderstorm Warning | ILN | Paulding | 45 min |
| Apr 30, 9:07 PM EDT | Severe Thunderstorm Warning | ILN | Franklin | 33 min |
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.