Alert archive / Ohio / Flash Flood Warnings in 1998
Flash Flood Warning 11, NWS Wilmington, OH
NWS Wilmington, OH issued this flash flood warning at Apr 9, 1998, 12:33 AM EDT for Logan County, Shelby County, Ohio. It was in force for 117 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Apr 9, 1998, 12:33 AM EDT (04:33 UTC)
- Expired
- Apr 9, 1998, 2:30 AM EDT
- In force
- 117 min
- Issued by
- NWS Wilmington, OH
- Area
- Whole counties
Counties Logan County, OH, Shelby County, OH
The radar
The Cincinnati radar (KILN), 105 km from the middle of the area, began a volume at 04:32 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.
The nearest sounding before it
Cncnati-Daytn, OH (KILN), launched 00:00Z, 4.6 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
- 149 J/kg
- Mixed-layer CIN
- -82 J/kg
- Mixed-layer LCL
- 1572 m above ground
- 0-6 km bulk shear
- 85 kt
- 0-1 km storm-relative helicity
- 30 m²/s²
- 0-3 km storm-relative helicity
- 76 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KILN 090435 FFWILN OHC091-149-090630- BULLETIN FLOOD WARNING NATIONAL WEATHER SERVICE WILMINGTON OH 1233 AM EDT THU APR 9 1998 THE NATIONAL WEATHER SERVICE IN WILMINGTON OH HAS ISSUED A FLOOD WARNING FOR SMALL STREAMS EFFECTIVE UNTIL 230 AM EDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN WEST CENTRAL OHIO ...LOGAN COUNTY ...SHELBY COUNTY SINCE 9 PM EDT WEDNESDAY EVENING...NATIONAL WEATHER SERVICE DOPPLER RADAR IN WILMINGTON OH ESTIMATED THAT 2 TO 4 INCHES OF RAIN HAD FALLEN ACROSS PARTS OF SHELBY AND LOGAN COUNTIES...ESPECIALLY IN A NARROW BAND FROM NORTH OF SIDNEY TO NORTH OF BELLEFONTAINE. LAW ENFORECMENT OFFICIALS REPORTED HIGH WATER ON A FEW ROADS IN BOTH COUNTIES. MODERATE TO OCCASIONALLY HEAVY RAIN WILL CONTINUE UNTIL 230 AM EDT...AND ANOTHER ONE-HALF TO ONE INCH OF RAIN WILL FALL IN SOME LOCATIONS. THIS RAINFALL WILL PRODUCE ADDITIONAL ROAD FLOODING... AND SOME CREEKS AND STREAMS WILL BRIEFLY RISE ABOUVE BANKFULL. IF YOU FWILL BE DRIVING IN THE REGION OVERNIGHT...REMAIN ALERT FOR FLOODED ROADS...AND PREPARE TO SEEK AN ALTERNATE ROUTE IF YOU ENCOUNTER FLOODING. NEVER DRIVE INTO A FLOODED STRETCH OF ROAD. THE DEPTH OF WATER MAY BE ENOUGH TO FLOAT YOUR VEHICLE.
What forecasters said that day
The local office's own words before this flash flood 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 flash flood warning went out at Apr 8, 8:10 PM EDT, 4 hours 23 minutes earlier.
Area forecast discussion, Apr 8, 8:10 PM EDT, 4 hours 23 minutes before
FORECAST COORDINATION MESSAGE NATIONAL WEATHER SERVICE WILMINGTON OH 810 PM EDT WED APR 8 1998 BRIEF RESPITE FROM SHRA/TSRA ACRS CWA COMING TO AN END. UPSTREAM TROF AT MID/UPR LVLS DIGGING INTO OH VLY AND ASSOCIATED SFC FRNT PRESSING TWD REGION FROM W...AND WDSPRD SHRA/TSRA HAVE DEVELOPED ACRS W/CNTL KY...S IND AND THRU AREAS WELL S/SW OF OH VLY. SHRA/TSRA WL OVERSPREAD CWA FROM SW TO NE DURG NEXT FEW HRS...AND CATEGORICAL POPS IN ORDER FOR ALL AREAS XCPT PERHAPS FAR N/NW...WHERE LIKELY POPS MAY SUFFICE. CONDITIONS WL REMAIN FAVORABLE FOR SVR TSTMS TIL WELL AFTER MIDNITE... AND MENTION OF SVR IN ORDER ACRS CNTL/S COUNTIES. ACRS OH AREA 1/5 COUNTIES N OF DAY-CMH...SFC FRNT ACRS N OH WL SETTLE INTO REGION FROM N OVERNITE AND MAY LIMIT SVR POTENTIAL SOMEWHAT. ALSO...MENTION OF HVY RAIN IN ORDER FOR AT LEAST CNTL/S SECTIONS. CURRNT FCST LOS MAY BE A BIT ON THE LO SIDE ACRS CNTL/S COUNTIES... TMPS IN 40S/50S WELL UPSTRM AND MAY NOT ARRIVE BEFORE 12Z. ALSO...WINDS WL SHIFT TO W ACRS CNTL/S OH LATER TONITE...NOT INTO N PER CURRNT FCSTS. ROWLEY
In the hours before
Local storm report, Apr 8, 8:05 PM EDT, 4 hours 28 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OHIO
805 PM EDT WED APR 08 1998
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0204 PM FLINT OH .75 INCH HAIL
04/08/98 FRANKLINLocal storm report, Apr 8, 10:00 PM EDT, 2 hours 33 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OHIO
1000 PM EDT WED APR 08 1998
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0959 PM HAGERSTOWN IN 1.75 INCH HAIL
04/08/98 WAYNE GOLF BALL SIZE HAIL
REPORTED BY HAGERSTOWN
MARSHALL AT 900 PM ESTLocal storm report, Apr 8, 10:09 PM EDT, 2 hours 24 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OHIO
1009 PM EDT WED APR 08 1998
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1009 PM ECONOMY IN 1.75 INCH HAIL
04/08/98 WAYNE GOLF BALL SIZE HAIL
REPORTED BY INDIANA
STATE POLICE AT 908
PM ESTLocal storm report, Apr 8, 10:09 PM EDT, 2 hours 24 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OHIO
1009 PM EDT WED APR 08 1998
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1009 PM ECONOMY IN 1.75 INCH HAIL
04/08/98 WAYNE GOLF BALL SIZE HAIL
REPORTED BY INDIANA
STATE POLICE AT 908
PM ESTThe office that day
Everything else NWS Wilmington, OH issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 8, 10:25 PM EDT | Severe Thunderstorm Warning | ILN | Logan | 30 min |
| Apr 8, 10:46 PM EDT | Severe Thunderstorm Warning | ILN | Hardin | 54 min |
| Apr 9, 5:49 AM EDT | Flash Flood Warning | ILN | Shelby | 116 min |
| Apr 9, 6:41 AM EDT | Flash Flood Warning | ILN | Logan | 119 min |
Nearby
Flash Flood Warnings in Ohio, 1998Every flash flood warning in 1998
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.