Alert archive / Ohio / Flash Flood Warnings in 1995

Flash Flood Warning 182, NWS Wilmington, OH

August 18, 1995Scioto County, Ohio

NWS Wilmington, OH issued this flash flood warning at Aug 18, 1995, 3:03 PM EDT for Scioto County, Ohio. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued: Aug 18, 1995, 3:03 PM EDT (19:03 UTC)
Expired: Aug 18, 1995, 7:00 PM EDT
In force: 4 hr
Issued by: NWS Wilmington, OH
Area: Whole counties

County Scioto County, OH

The radar

The Cincinnati radar (KILN), 99 km from the middle of the area, began a volume at 19:04 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

Huntington/Tri S, WV (KHTS), launched 12:00Z, 7.1 hours before the alert went out and 65 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1014 J/kg
Mixed-layer CIN: -42 J/kg
Mixed-layer LCL: 740 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 23 m²/s²
0-3 km storm-relative helicity: 49 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KILN 181958
FFWILN
OHC145-182300-
 
BULLETIN
FLOOD WARNING
NATIONAL WEATHER SERVICE WILMINGTON OH
357 PM EDT FRI AUG 18 1995
 
THE NATIONAL WEATHER SERVICE IN WILMINGTON HAS ISSUED A
FLOOD WARNING FOR URBAN AREAS AND SMALL STREAMS EFFECTIVE UNTIL 700 PM
EDT FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH OHIO
 
   ...SCIOTO COUNTY
 
AT 355 PM EDT...WEATHER SERVICE RADAR ESTIMATED THAT NEARLY 2.00 INCHES
OF RAIN HAS FALLEN NEAR THE PORTSMOUTH AREA SINCE 245 PM EDT. ALTHOUGH
THE HEAVIEST RAIN IS NOW MOVING SOUTH OF THE COUNTY...ADDITIONAL RAIN
WAS MOVING INTO THE PORTSMOUTH AREA.
 
WITH THE SOIL CONDITIONS NEARLY SATURATED ACROSS THE COUNTY...THERE MAY
BE PROBLEMS IN THE PORTSMOUTH AREA WITH WATER ON ROADS.
 
NEVER DRIVE YOUR CAR INTO A FLOODED ROADWAY. YOU CAN EASILY
BECOME STRANDED OR TRAPPED. THE DEPTH OF WATER IS NOT ALWAYS
OBVIOUS. IF YOU ARE UNSURE ABOUT THE ROAD CONDITION OR THE WATER
LEVEL AHEAD OF YOU...TURN AROUND AND TAKE ANOTHER ROUTE.
 
DIAN

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 Aug 18, 10:20 AM EDT, 4 hours 43 minutes earlier.

Area forecast discussion, Aug 18, 10:20 AM EDT, 4 hours 43 minutes before

FORECAST COORDINATION MESSAGE
NATIONAL WEATHER SERVICE WILMINGTON OH
1020 AM EDT FRI AUG 18 1995

BUSY WITH URBAN AND SMALL STREAM FLOODG FOR MSN AND FRANKLIN CO.
CLUSTER OF TSTMS IN MSN COUNTY DUMPED ALMOST 2 IN OF RAIN PER HR
BASED ON RADAR ESTIMATES.  CLUSTER EXPANDING INTO FRANKLIN CO AND
THE CITY OF CMH WL SEE RAIN VERY SOON.  ATTM...NO WIND OR HAIL
REPORTED WITH THESE STORMS.

12Z MODIFIED DAY SOUNDG SHOWS A PRECIPITABLE H20 OF OVER 2 IN...
LI OF -8...SHOWALTER TO -4...CAPE OF 3700 J/KG AND WET BULB ZERO OF
11400 FT...BUT BELIEVE WET BULB ZERO PROBABLY HIGHER DUE TO
UNREPRESENTATIVE DRY LYR AT MID LVLS.  MAIN THREAT TODAY IS HEAVY
RAIN AND FLOODG AS WIND FIELD SHOWG SE DRIFT AT 15 KTS.

FLOOD WATCH LOOKS GOOD FOR ALL OF CWA EXCEPT NW OH...IMPORTANT
VORT MAX PROGGED TO MOVE S THROUGH CWA TODAY SHOULD HELP FOCUS
TSTMS.

SANDLER

The office that day

Everything else NWS Wilmington, OH issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 18, 10:07 AM EDT	Flash Flood Warning	ILN	Franklin, Madison	2 hr

Nearby

Flash Flood Warnings in Ohio, 1995 Every flash flood warning in 1995

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.