Alert archive / Ohio / Flash Flood Warnings in 1993

Flash Flood Warning 24, NWS Wilmington, OH

July 2, 1993Champaign County, Logan County, Ohio

NWS Wilmington, OH issued this flash flood warning at Jul 2, 1993, 8:32 PM EDT for Champaign County, Logan County, Ohio. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: Jul 2, 1993, 8:32 PM EDT (00:32 UTC)
Expired: Jul 2, 1993, 11:30 PM EDT
In force: 3 hr
Issued by: NWS Wilmington, OH
Area: Whole counties

Counties Champaign County, OH, Logan County, OH

The nearest sounding before it

Dayton/James M C, OH (KDAY), launched 00:00Z, 0.5 hours before the alert went out and 55 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: NaN m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 101 m²/s²
0-3 km storm-relative helicity: 116 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.8

Open this sounding in Storm Lab

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 flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jul 2, 5:52 PM EDT, 2 hours 40 minutes before

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Special weather statement, Jul 2, 6:33 PM EDT, 1 hour 59 minutes before

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Special weather statement, Jul 2, 6:33 PM EDT, 1 hour 59 minutes before

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Special weather statement, Jul 2, 7:46 PM EDT, 46 minutes before

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Special weather statement, Jul 2, 7:46 PM EDT, 46 minutes before

OHZ008-INZ013-KYZ005-030045-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE CINCINNATI OH
745 PM EDT (645 PM EST) FRI JUL 2 1993

...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR ALL OF THE
CINCINNATI TRI STATE AREA UNTIL 1100 PM EDT (1000 PM EST)...

...A FLOOD WATCH REMAINS IN EFFECT FOR SOUTHWEST OHIO THROUGH TONIGHT...

AT 735 PM EDT...WEATHER SERVICE RADAR DETECTED AN AREA OF SCATTERED
SHOWERS AND THUNDERSTORMS IN A 140 MILE WIDE BAND THAT EXTENDED FROM
WINCHESTER KENTUCKY 70 MILES SOUTHEAST OF CINCINNATI...TO 70 MILES NORTH
OF INDIANAPOLIS. THESE STORMS HAVE WEAKED SLIGHTLY SINCE 530 PM
EDT.

THE MOST INTENSE THUNDERSTORMS WERE IN A 50 MILE WIDE BAND THAT EXTENDED
FROM DAYTON OHIO...TO 75 MILES NORTH OF DAYTON. AN ADDITIONAL LINE OF
SHOWERS AND THUNDERSTORMS EXTENDED FROM 30 MILES EAST OF
INDIANAPOLIS...TO 70 MILES SOUTHWEST OF INDIANAPOLIS.

ALL SHOWERS AND THUNDERSTORMS WERE MOVING EAST AT 30 MILES AN HOUR.

THE GREATER CINCINNATI AREA MAY SEE THUNDERSTORMS REDEVELOPING AFTER
900 PM EDT. PERSONS WITHIN THE TRI STATE SHOULD STAY TUNED TO NOAA
WEATHER RADIO OR THE COMMERCIAL MEDIA FOR ANY POTENTIALLY SEVERE
THUNDERSTORMS THAT MAY DEVELOP LATER THIS EVENING.

DIAN

Special weather statement, Jul 2, 8:05 PM EDT, 27 minutes before

OHZ006-007-009-011-020100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBUS OH
804 PM EDT THU JUL 1 1993

A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR UNION...MADISON...AND
FAYETTE COUNTIES UNTIL 11 PM EDT.

A FLOOD WATCH IS IN EFFECT FOR ALL OF CENTRAL OHIO TONIGHT.

AT 755 PM NATIONAL WEATHER SERVICE RADAR INDICATED SCATTERED STRONG
THUNDERSTORMS MOVING INTO WESTERN FAYETTE COUNTY FROM GREENE AND CLINTON
COUNTIES.  THESE STORMS WERE MOVING NORTHEAST AT 30 MILES AN HOUR...AND
WILL MOVE ACROSS THE NORTHERN HALF OF FAYETTE COUNTY AND INTO SOUTHERN
MADISON COUNTY BETWEEN 8 PM AND 9 PM.

THESE STORMS WILL PRODUCE BRIEF VERY HEAVY RAIN...LIGHTNING STRIKES...
GUSTY WINDS TO 35 MILES AN HOUR...AND POSSIBLY SMALL HAIL.  THE BRIEF
VERY HEAVY RAIN COULD CAUSE PONDING OF WATER ON ROADS AND LOW-LYING
AREAS.  IF THESE STORMS HOLD TOGETHER...THEY COULD REACH THE COLUMBUS
METROPOLITAN AREA BETWEEN 930 PM AND 10 PM.

OTHER STRONG THUNDERSTORMS WERE MOVING ACROSS WESTERN OHIO...AND WILL
MOVE INTO CENTRAL OHIO AND REACH UNION AND MARION COUNTIES BETWEEN 10 PM
AND 11 PM.

PEOPLE THROUGHOUT CENTRAL OHIO SHOULD SEEK INSIDE SHELTER IF STORMS
APPROACH.  WITH THE GROUND ALREADY SATURATED FROM RECENT HEAVY
RAINFALL...ANY ADDITIONAL HEAVY RAINFALL TONIGHT WILL LIKELY CAUSE MORE
FLOODING.  PEOPLE LIVING IN FLOOD PRONE AREAS AND NEAR STREAMS AND
CREEKS SHOULD CLOSELY MONITOR THE LATEST WEATHER INFORMATION.

LISTEN TO NOAA WEATHER RADIO FOR FURTHER UPDATES AND POSSIBLE WARNINGS.

GROH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 2, 10:21 PM EDT	Flash Flood Warning	ILN	Mercer	4 hr
Jul 2, 10:38 PM EDT	Tornado Warning	ILN	Knox	67 min

Nearby

Flash Flood Warnings in Ohio, 1993 Every flash flood warning in 1993

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.