Alert archive / Ohio / Flash Flood Warnings in 2001

Flash Flood Warning 8, NWS Wilmington, OH

May 18, 2001Adams County, Scioto County, Ohio

NWS Wilmington, OH issued this flash flood warning at May 18, 2001, 6:45 PM EDT for Adams County, Scioto County, Ohio. It was in force for 2 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: May 18, 2001, 6:45 PM EDT (22:45 UTC)
Expired: May 18, 2001, 9:00 PM EDT
In force: 2 hr
Issued by: NWS Wilmington, OH
Area: Whole counties

Counties Adams County, OH, Scioto County, OH

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 10.8 hours before the alert went out and 83 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: 1152 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 479 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 21 m²/s²
0-3 km storm-relative helicity: 30 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

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

000 
WGUS51 KILN 182250
FFWILN
OHC001-145-190100-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE WILMINGTON OH
645 PM EDT FRI MAY 18 2001

THE NATIONAL WEATHER SERVICE IN WILMINGTON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  ADAMS COUNTY IN OHIO...
  SCIOTO COUNTY IN OHIO...

* UNTIL 900 PM EDT...

* SOME LOCATIONS IN THE WARNING AREA INCLUDE...
  WHEELERSBURG...
  WEST UNION...
  PORTSMOUTH...
  PEEBLES...
  LUCASVILLE...

THERE HAVE BEEN REPORTS OF SEVERAL FEET OF WATER OVER AREA 
ROADS AND REPORTS OF PEOPLE TRAPPED IN VEHICLES IN SCIOTO COUNTY. 
WHILE THE HEAVY RAIN HAS ENDED OVER THIS AREA...ADDITIONAL 
THUNDERSTORMS ARE EXPTECTED LATER THIS EVENING.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPER#TY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE. IF YOUR VEHICLE STALLS, ABANDON IT IMMEDIATELY AND SEEK
HIGHER GROUND.


$$
JDR

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 May 18, 2:35 PM EDT, 4 hours 10 minutes earlier.

Area forecast discussion, May 18, 2:35 PM EDT, 4 hours 10 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE WILMINGTON OH
235 PM EDT FRI MAY 18 2001

LATEST SFC ANALYSIS SHOWS A COLD FRONT EXTENDING FROM EXTREME SE
MI...EXTREME NW OHIO...SOUTHWEST INTO CNTRL INDIANA...THEN INTO S
CNTRL IL.  A WEAK SFC LOW WAS NOTED ACRS SW OHIO WITH ANOTHER WEAK
SFC LOW DEVELOPING ACRS S CNTRL IL.

MODELS ARE NOT IN TOO MUCH DISAGREEMENT REGARDING THE NXT 48 HOURS.
WILL LEAN TOWARD AN ETA/AVN BLEND.

MAIN CONCERN OVERNIGHT WILL BE THE POTENTIAL FOR FLOODING/FLASH
FLOODING.  KILN RADAR CONTINUES TO SHOW SHOWERS/THUNDERSTORMS
PRODUCING HEAVY RAIN ACRS SRN OHIO.  THIS IS IN RESPONSE TO A VERY
MOIST AND UNSTABLE AIRMASS.  PW/S WILL CONTINUE TO BE HIGH...AROUND
1.7 INCHES ACRS SRN OHIO...SE INDIANA AND NRN KY THROUGH TONIGHT.
CURRENT ROUND OF SHOWERS/STORMS WILL PUSH INTO S CNTRL OHIO/NRN KY
THROUGH THE REMAINDER OF THE AFTN.  FOR THIS EVENING INTO
TONIGHT...THE SECOND SFC LOW PRESSURE OVER S CNTRL IL...IN
CONJUNCTION WITH AN UPR LVL S/WV ABOVE...WILL BRING ANOTHER ROUND OF
SHOWERS/STORMS TO THE SRN CWFA.  THUS...WILL CONTINUE A FF WATCH IN
THIS REGION.  FOR THE NRN CWFA...FRONTAL BOUNDARY WILL GRADUALLY SAG
SOUTH AND EAST THERE OVERNIGHT.  INSTABILITY/LOW LVL
CONVERGENCE/PCPN EFFICIENCY WILL NOT BE AS GREAT AS THE SRN CWFA.
THUS...WILL CANCEL FF WATCH THERE (INCLUDING DAYTON...COLUMBUS AND
WAPAKONETA).  AREAS OF FOG WILL BE MENTIONED DUE TO SO MUCH MSTR ON
THE GROUND.

FOR SATURDAY...CLEARING WILL GRADUALLY TAKE PLACE FROM NORTH TO
SOUTH.  WILL CARRY POPS DURING THE MORNING FOR CVG EASTWARD INTO PMH.
SOUTH OF THE RIVER...WILL CARRY POPS INTO EARLY AFTN.

BY SATURDAY NIGHT...UPR LVL FLOW BECOMES MORE ANTICYCLONIC.  SFC
HIGH PRESSURE RIDGING ALSO TAKES PLACE.  WILL GO MOSTLY CLEAR NRN
AREAS WITH PARTLY CLOUDY/CLEARING SOUTH.  FOG COULD AGAIN BE A
PROBLEM SATURDAY NIGHT OVER THE SOUTH...DEPENDENT ON WHEN THE
CLEARING/DRYING TAKES PLACE.

ON SUNDAY...INCREASING SOUTH TO SOUTHWEST RETURN FLOW IN RESPONSE TO
A DIGGING S/WV INTO THE NRN PLAINS STATES WILL ALLOW TEMPS TO WARM
BACK TO AROUND 80.  SKIES SHOULD REMAIN PARTLY CLOUDY.

.ILN...FLASH FLOOD WATCH UNTIL 8 AM EDT SAT FOR
       INZ066-073>075-080-
       KYZ089>100-
       OHZ070>074-077>082-088

HICKMAN

In the hours before

Local storm report, May 18, 1:17 PM EDT, 5 hours 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON, OH
117 PM EDT FRI MAY 18 2001

TIME(EDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....
s
0105 PM    SABINA                    OH   0.75 INCH HAIL
05/18/01   CLINTON

Local storm report, May 18, 2:18 PM EDT, 4 hours 27 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON, OH
218 PM EDT FRI MAY 18 2001

TIME(EDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0200 PM    COUNTYWIDE                OH   FLOOD
05/18/01   CLINTON                        STREETS FLOODED COUNTYWIDE

0110 PM    WASHINGTON COURT HOUSE    OH   FLOOD
05/18/01   FAYETTE                        CITY STREETS FLOODED

JWC

Local storm report, May 18, 2:31 PM EDT, 4 hours 14 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON, OH
231 PM EDT FRI MAY 18 2001

TIME(EDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....a

0220 PM    CHILLICOTHE               OH   FLOOD
05/18/01   ROSS                           ROADS FLOODED

JWC

Local storm report, May 18, 3:46 PM EDT, 2 hours 59 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON, OH
346 PM EDT FRI MAY 18 2001

TIME(EDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0115 PM    SNOWHILL COUNTRY CLUB     OHIO   WIND DAMAGE
05/18/01   CLINTON                        SEVERAL TREES DOWN

0115 PM    NEAR SNOWHILL COUNTRY CLUBOH   WIND DAMAGE
05/18/01   CLINTON                        SEVERAL TREES DOWN

JW,C

The office that day

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

Issued	Product	Office	Counties	Lasted
May 18, 12:53 PM EDT	Severe Thunderstorm Warning	ILN	Clinton, Fayette	52 min
May 18, 1:00 PM EDT	Severe Thunderstorm Warning	ILN	Butler	45 min
May 18, 2:07 PM EDT	Flash Flood Warning	ILN	Ross	3 hr
May 18, 3:13 PM EDT	Flash Flood Warning	ILN	Clinton, Fayette	3 hr
May 18, 3:28 PM EDT	Severe Thunderstorm Warning	ILN	Ross	62 min
May 18, 3:29 PM EDT	Flash Flood Warning	ILN	Hocking, Pickaway	3 hr
May 18, 3:37 PM EDT	Flash Flood Warning	ILN	Brown, Clermont, Highland	3 hr
May 18, 4:08 PM EDT	Flash Flood Warning	ILN	Pike, Scioto	3 hr
May 18, 4:54 PM EDT	Flash Flood Warning	ILN	Ross	2 hr
May 18, 4:58 PM EDT	Severe Thunderstorm Warning	ILN	Pike	32 min

Nearby

Flash Flood Warnings in Ohio, 2001 Every flash flood warning in 2001

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.