Alert archive / Ohio / Flash Flood Warnings in 1998
Flash Flood Warning 22, NWS Wilmington, OH
NWS Wilmington, OH issued this flash flood warning at Apr 16, 1998, 2:12 AM EDT for Clermont County, Clinton County, Warren County, Ohio. It was in force for 3 hr. 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 16, 1998, 2:12 AM EDT (06:12 UTC)
- Expired
- Apr 16, 1998, 5:10 AM EDT
- In force
- 3 hr
- Issued by
- NWS Wilmington, OH
- Area
- Whole counties
Counties Clermont County, OH, Clinton County, OH, Warren County, OH
The radar
The Cincinnati radar (KILN), 23 km from the middle of the area, began a volume at 06:12 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, 6.2 hours before the alert went out and 26 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 835 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 137 m²/s²
- 0-3 km storm-relative helicity
- 283 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KILN 160614 FFWILN OHC025-027-165-160910- BULLETIN FLOOD WARNING NATIONAL WEATHER SERVICE WILMINGTON OH 212 AM EDT THU APR 16 1998 THE NATIONAL WEATHER SERVICE IN WILMINGTON HAS ISSUED A * FLOOD WARNING FOR URBAN AREAS AND SMALL STREAMS FOR... CLERMONT COUNTY IN SOUTHWESTERN OHIO CLINTON COUNTY IN SOUTHWESTERN OHIO WARREN COUNTY IN SOUTHWESTERN OHIO * EFFECTIVE UNTIL 510 AM EDT * AT 210 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR ESTIMATED ONE TO TWO INCHES OF RAIN HAD FALLEN ACROSS PARTS OF WARREN... CLERMONT AND CLINTON COUNTIES SINCE 1110 PM EDT. THUNDERSTORMS WILL CONTINUE TO MOVE ACROSS THESE COUNTIES AND WILL PRODUCE ANOTHER ONE TO TWO INCHES OF RAIN BY 510 AM EDT. THIS< ADDITIONAL RAINFALL WILL FLOOD SMALL STREAMS...ROADS AND URBAN AREAS. IT IS VERY DIFFICULT AT NIGHT TO TELL HOW MUCH WATER IS ON ROADS. MOTORISTS SHOULD NOT DRIVE THROUGH WATER OF UNKNOWN DEPTH.
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 16, 2:08 AM EDT, 4 minutes earlier.
Area forecast discussion, Apr 16, 2:08 AM EDT, 4 minutes before
FORECAST COORDINATION MESSAGE NATIONAL WEATHER SERVICE WILMINGTON OH 208 AM EDT THU APR 16 1998 FCST PROBS TDA ARE TIMING OF PRECIP...ASSESSMENT OF NEED FOR FLASH FLOOD WATCHES AND AFFECTS ON TEMPS. LTST/, SFC ANALYS SHWS LO PRES IN SE IA WITH QUASI-STATIONARY WRMFNT XTNDG E FM NR IND TO CVG. TSTMS DVLPG IN WRM SECTOR ACRS SRN IL AND SRN IL WHERE MSTR FLUX CNVRGC IS VRY FAVORABLE AND CAPES ARND 2000 J/KG. THESE STMS TRAINING E ACRS PTN OF SE IN AND SRN OH. RIPLEY CNTY IN HS RCVD 3.2 INCHES OF RAIN IN PAST 2 HRS AND MANY ROADS ARE WASHED OUT. FRANKLIN AND DEARBORN ALSO HV FLOOD PROBLEMS. IN VRY MOIST SWRLY UPR FLO...H7 S/WV OVR SRN OH THIS MRNG. WITH THE PASSAGE OF THIS S/WV XPCT A BRIEF LULL IN ACTIVITY WITH ADDITIONAL TSTM DVLPMNT THIS AFTN AS CDFNT APPROACHES. CAPES AHD OF THIS FNT ARE XPCTD TO BE IN 800-1200 J/KG RANGE. SVR STMS ARE NOT OUT OF THE QUESTION AGN TDA. BASED ON ALL THE RAIN WE ARE RECEIVING AND ADDITIONAL TSTMS XPCTD TDA...STGLY SUGG FLASH FLOOD WATCHES FOR E CNTRL AND SE IN...SRN OH AND NRN KY. CDFNT TO PASS THRU OH TNGT WITH THE PRECIP COMING TO AN END ACRS ALL BUT S CNTRL OH/NE KY AS DRIER AIR FILTERS INTO THE RGN. DEEPER MSTR MOVS TO E BUT GRIDDED 1000/850 MB SHWG HI LYR AVG RH. XPCT SKIES TO RMN MSTLY CLDY OVRNGT. A FW MRNG SHWRS MAY LINGER OVR S CNTL OH AND NE KY. OTHERWISE... SFC RDG BLDS INTO OH ON FRI WITH DEEPER MSTR SHUNTED TO THE S AND E WITH FRONTAL BNDRY. UNDER CONTD DRYING WE SHUD SEE PTLY SUNNY COND FRI. CVG 075/051 059/041 062 +62 DAY 071/048 058/039 060 +62 CMH 072/052 060/040 061 +82 RANDALL
In the hours before
Local storm report, Apr 15, 9:07 PM EDT, 5 hours 5 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OHIO
907 PM EDT WED APR 15 1998
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0800 PM HILLSBORO OH 1.75 INCH HAIL
04/15/98 HIGHLAND 5 MILES EAST OF HILLSBORO
NEAR ROCKY FORK LAKE.Local storm report, Apr 15, 9:07 PM EDT, 5 hours 5 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OHIO
907 PM EDT WED APR 15 1998
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0800 PM HILLSBORO OH 1.75 INCH HAIL
04/15/98 HIGHLAND 5 MILES EAST OF HILLSBORO
NEAR ROCKY FORK LAKE.Special weather statement, Apr 15, 9:33 PM EDT, 4 hours 39 minutes before
INZ050-058-059-066-073>075-080-160700- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILMINGTON OH 930 PM EDT (830 PM EST) WED APR 15 1998 ...TORNADO WATCH IN EFFECT FOR EAST CENTRAL INDIANA AND SOUTHEAST INDIANA UNTIL 3 AM EDT (2 AM EST)... THE STORM PREDICTION CENTER IN NORMAN OKLAHOMA HAS ISSUED A TORNADO WATCH FOR ALL OF EAST CENTRAL INDIANA...INCLUDING RICHMOND AND CONNERSVILLE...AND FOR SOUTHEAST INDIANA...INCLUDING VERSAILLES AND LAWRENCEBURG. AT 925 PM EDT (825 PM EST)...NUMEROUS THUNDERSTORMS WERE DEVELOPING ACROSS SOUTHERN INDIANA. THESE THUNDERSTORMS WERE MOVING TOWARD THE EAST AND WILL SPREAD INTO EAST CENTRAL AND SOUTHEAST SECTIONS OF INDIANA BETWEEN 10 PM AND 11 PM EDT (9 PM AND 10 PM EST) THIS EVENING. CONDITIONS ARE FAVORABLE FOR ANY OF THESE THUNDERSTORMS TO INTENSIFY RAPIDLY AND TO PRODUCE TORNADOES...LARGE HAIL AND DAMAGING WIND GUSTS. ALSO...THUNDERSTORMS WILL PRODUCE TORRENTIAL DOWNPOURS CAPABLE OF FLOODING SMALL STREAMS AND LOW-LYING ROADS. REMAIN ALERT FOR FREQUENT CLOUD TO GROUND LIGHTNING STRIKES AS WELL. IF YOU ARE LOCATED WITHIN OR NEAR EAST CENTRAL INDIANA OR SOUTHEAST INDIANA...PLEASE STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO...LOCAL OR CABLE TELEVISION FOR UPDATED INFORMATION AND POSSIBLE WARNINGS. ROWLEY
Special weather statement, Apr 15, 11:15 PM EDT, 2 hours 57 minutes before
OHZ053>056-060>065-070>074-077>082-088-089-KYZ088>100-160900- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILMINGTON OH 1115 PM EDT WED APR 15 1998 ...TORNADO WATCH IN EFFECT FOR SOUTHERN OHIO...PARTS OF CENTRAL OHIO AND THE MIAMI VALLEY AND FOR ALL OF NORTHERN KENTUCKY... THE STORM PREDICTION CENTER IN NORMAN OKLAHOMA HAS ISSUED A TORNADO WATCH...EFFECTIVE UNTIL 5 AM EDT...FOR ALL OF SOUTHERN OHIO AND NORTHERN KENTUCKY...AS WELL AS FOR SOUTHERN SECTIONS OF THE MIAMI VALLEY OF OHIO...MUCH OF CENTRAL OHIO. CITIES IN THE WATCH AREA INCLUDE DAYTON...CINCINNATI...COLUMBUS... PORTSMOUTH...OWENTON AND MAYSVILLE. AT 1110 PM EDT...NUMEROUS THUNDERSTORMS WERE PUSHING INTO SOUTHWEST OHIO FROM THE WEST. THESE THUNDERSTORMS WILL CONTINUE TO SPREAD TOWARD THE EAST AND NORTHEAST AND INTO THE REST OF THE TORNADO WATCH AREA DURING THE OVERNIGHT HOURS. CONDITIONS ARE FAVORABLE FOR THUNDERSTORMS TO INTENSIFY RAPIDLY TO PRODUCE TORNADOES...DAMAGING WIND GUSTS AND LARGE HAIL. IF YOU ARE LOCATED WITHIN OR CLOSE TO THE WATCH AREA...YOU ARE STRONGLY URGED TO MONITOR NOAA WEATHER RADIO...COMMERCIAL RADIO... LOCAL OR CABLE TELEVISION FOR UPDATES CONCERNING THIS POTENTIALLY DANGEROUS WEATHER SITUATION. ROWLEY
The office that day
Everything else NWS Wilmington, OH issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 15, 8:07 PM EDT | Severe Thunderstorm Warning | ILN | Ross | 48 min |
| Apr 15, 11:42 PM EDT | Flash Flood Warning | ILN | Butler | 118 min |
| Apr 16, 1:33 AM EDT | Flash Flood Warning | ILN | Butler | 3 hr |
| Apr 16, 1:48 AM EDT | Flash Flood Warning | ILN | Hamilton | 3 hr |
| Apr 16, 3:48 AM EDT | Flash Flood Warning | ILN | Hamilton | 3 hr |
| Apr 16, 4:05 AM EDT | Flash Flood Warning | ILN | Butler | 3 hr |
| Apr 16, 5:05 AM EDT | Flash Flood Warning | ILN | Clermont, Clinton, Warren | 4 hr |
| Apr 16, 6:36 AM EDT | Flash Flood Warning | ILN | Hamilton | 3 hr |
| Apr 16, 7:30 AM EDT | Flash Flood Warning | ILN | Clermont, Warren | 3 hr |
| Apr 16, 7:36 AM EDT | Flash Flood Warning | ILN | Franklin | 3 hr |
| Apr 16, 8:11 AM EDT | Flash Flood Warning | ILN | Franklin | 2 hr |
| Apr 16, 4:35 PM EDT | Severe Thunderstorm Warning | ILN | Mercer | 65 min |
| Apr 16, 5:44 PM EDT | Severe Thunderstorm Warning | ILN | Preble | 46 min |
| Apr 16, 6:00 PM EDT | Severe Thunderstorm Warning | ILN | Montgomery | 35 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.