Alert archive / Indiana / Flash Flood Warnings in 1998
Flash Flood Warning 18, NWS Wilmington, OH
NWS Wilmington, OH issued this flash flood warning at Apr 15, 1998, 11:47 PM EST for Franklin County, Indiana. It was in force for 118 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 15, 1998, 11:47 PM EST (04:47 UTC)
- Expired
- Apr 16, 1998, 1:45 AM EST
- In force
- 118 min
- Issued by
- NWS Wilmington, OH
- Area
- Whole counties
County Franklin County, IN
The radar
The Cincinnati radar (KILN), 106 km from the middle of the area, began a volume at 04:48 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, 4.8 hours before the alert went out and 108 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 160450 FFWILN INC047-160645- BULLETIN FLOOD WARNING NATIONAL WEATHER SERVICE WILMINGTON OH 1247 AM EDT (1147 PM EST) THU APR 16 1998 THE NATIONAL WEATHER SERVICE IN WILMINGTON HAS ISSUED A * FLOOD WARNING FOR SMALL STREAMS FOR... FRANKLIN COUNTY IN SOUTHEASTERN INDIANA * EFFECTIVE UNTIL 145 AM EST (245 AM EDT) * AT 1140 PM EST... NATIONAL WEATHER SERVICE DOPPLER RADAR ESTIMATED THAT UP TO 3 INCHES OF RAIN HAVE FALLEN IN FRANKLIN COUNTY SINCE 930 PM EST. AN ADDITIONAL INCH OF RAIN WILL FALL IN FRANKLIN COUNTY BY 145 AM EST. FLOODING OF SMALL STREAMS AND ROADS WILL CONTINUE UNTIL THAT TIME. 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 15, 7:30 PM EST, 4 hours 17 minutes earlier.
Area forecast discussion, Apr 15, 7:30 PM EST, 4 hours 17 minutes before
FORECAST COORDINATION MESSAGE NATIONAL WEATHER SERVICE WILMINGTON OH 830 PM EDT WED APR 15 1998 WARM FRNT PUSHING THRU XTRM N COUNTIES OF CWA. SHRA DEVELOPG NR THIS BNDRY SHUD LIFT N/E OF CWA DURG NEXT COUPLE OF HRS. MEANWHILE... NUMEROUS SHRA/TSRA MOVG THRU S HLF OF CWA...IN AREA OF SFC MSTR CONVRG AND N OF SECOND WARM FRNT PUSHING INTO N KY. TSTMS HAVE PUSHED OUT OF SW COUNTIES OF CWA...WITH ADDL TSTMS DEVELOPING INVOF WARM FRNT ACRS S CNTL/SW IN AND FURTHER TO W ACRS E MO/S IL. S WARM FRNT WL CONT TO PRESS TWD N AND INTO CWA OVERNITE. SFC DWPTS WL CONT TO RISE...INTO LWR 60S ACRS S. ALSO...LOW LVL JET/ASSOCIATED FORCING WL INTENSIFY/PUSH INTO S/CNTL SECTIONS AND UPR LVL DIVERGC WL INCR AS N JET MAX HEADS INTO GREAT LAKES AND S JET MAX APPROACHES REGION FROM SW. WITH THESE INGREDIENTS IN PLACE...CONDITIONS WL REMAIN FAVORABLE FOR SHRA/TSRA TO DEVELOP WITHIN AND PUSH INTO CWA THRU NITE. FCST WIND PROFILE/INSTABILITY COMBINATION SHUD KEEP SVR THREAT GOING THRU NITE. ALSO...WITH CONTINUED REDEVELOPMNT OVERNITE...AND GIVEN HVY RAFL THAT HAS ALREADY FALLEN IN SOME LOCATIONS...POTENTIAL EXISTS FOR EXCESSIVE RAFL. INITIALLY...GREATEST THREAT FOR HVY RAFL WL BE S OF RICH-DAY-CMH LINE...BUT HVY RAFL MAY SPREAD FARTHER N AS WARM FRNT PUSHES INTO REGION. CONT FLOOD WATCH CURRNTLY IN EFFECT FOR S OH...AND SUGGEST ISSUING FLASH FLOOD WATCHES FOR SE IN/N KY. ALSO...CONSIDER EXTENDING FLOOD/FLASH FLOOD WATCHES INTO RICH-DAY-CMH pVCNTYS. TMPS WL NOT FALL MUCH BLO CURRNT LVLS ANYWHERE IN CWA...AND WL LIKELY HOLD STEADY OR SLOWLY RISE ACRS S AS WARM FRNT PUSHES THRU AREA...ALTHO CUD BRIEFLY FALL BACK A FEW DEGREES IN TSTMS. ROWLEY
In the hours before
Local storm report, Apr 15, 8:07 PM EST, 3 hours 40 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, 8:07 PM EST, 3 hours 40 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, 8:33 PM EST, 3 hours 14 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, 10:15 PM EST, 1 hour 32 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, 9:53 PM EST | Flash Flood Warning | ILN | Franklin | 2 hr |
| Apr 15, 10:09 PM EST | Severe Thunderstorm Warning | ILN | Franklin, Ripley | 46 min |
| Apr 15, 11:30 PM EST | Flash Flood Warning | ILN | Dearborn, Ripley | 2 hr |
| Apr 16, 12:35 AM EST | Flash Flood Warning | ILN | Dearborn, Franklin, Ripley | 115 min |
| Apr 16, 2:35 AM EST | Flash Flood Warning | ILN | Dearborn, Franklin, Ripley | 3 hr |
| Apr 16, 4:10 AM EST | Flash Flood Warning | ILN | Ohio, Switzerland | 3 hr |
| Apr 16, 6:03 AM EST | Flash Flood Warning | ILN | Dearborn, Franklin, Ripley | 3 hr |
| Apr 16, 6:30 AM EST | Flash Flood Warning | ILN | Switzerland | 3 hr |
| Apr 16, 6:30 AM EST | Flash Flood Warning | ILN | Ohio | 3 hr |
| Apr 16, 4:14 PM EST | Severe Thunderstorm Warning | ILN | Franklin | 56 min |
Nearby
Flash Flood Warnings in Indiana, 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.