Alert archive / Ohio / Flash Flood Warnings in 1998

Flash Flood Warning 65, NWS Wilmington, OH

June 11, 1998Adams County, Brown County, Ohio

NWS Wilmington, OH issued this flash flood warning at Jun 11, 1998, 2:48 PM EDT for Adams County, Brown County, Ohio. It was in force for 102 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: Jun 11, 1998, 2:48 PM EDT (18:48 UTC)
Expired: Jun 11, 1998, 4:30 PM EDT
In force: 102 min
Issued by: NWS Wilmington, OH
Area: Whole counties

Counties Adams County, OH, Brown County, OH

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 6.8 hours before the alert went out and 61 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: 1257 J/kg
Mixed-layer CIN: -28 J/kg
Mixed-layer LCL: 619 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 98 m²/s²
0-3 km storm-relative helicity: 109 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 4.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KILN 111848
FFWILN
OHC001-015-112030-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE WILMINGTON OH
248 PM EDT THU JUN 11 1998

THE NATIONAL WEATHER SERVICE IN WILMINGTON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  ADAMS COUNTY IN SOUTH CENTRAL OHIO.
  BROWN COUNTY IN SOUTH CENTRAL OHIO.

* EFFECTIVE UNTIL 430 PM EDT.

*AT 245 PM EDT NATIONAL WEATHER SERVICE RADAR INDICATED THAT UP TO
 2.5 INCHES OF RAIN HAS FALLEN THIS MORNING AND EARLY THIS
 AFTERNOON ACROSS THE SOUTHERN PART OF THESE COUNTIES...MAINLY SOUTH
 OF RTE 125. AN AREA OF THUNDERSTORMS WITH HEAVY RAINFALL WAS MOVING
 INTO THESE AREAS WITH AN ADDITIONAL 1 TO 3 INCHES OF RAINFALL
 POSSIBLE THIS AFTERNOON.


~IF FLASH FLOODING IS OBSERVED...ACT QUICKLY. MOVE TO HIGHER GROUND
TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING
WHEN WATER BEGINS RISING.

WILKINSON

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 Jun 11, 2:33 PM EDT, 15 minutes earlier.

Area forecast discussion, Jun 11, 2:33 PM EDT, 15 minutes before

FORECAST COORDINATION MESSAGE
NATIONAL WEATHER SERVICE WILMINGTON OH
233 PM EDT THU JUN 11 1998

DISC:  IMMEDIATED CONCERN CONTINUES TO BE FLOOD POTENTIAL. FORCED
ASCENT OF HIGH THETA-E AIR ALONG NEARLY STATIONARY MESOSCALE BNDRY
CONTINUES TO FOCUS +RA DVLPMNT IN THE AREA.  RADAR ESTIMATES INDICATE A
BROAD AXIS OF 3-4 INCH TOTALS SINCE THIS MORNING FROM E CENTRAL INDIANA
INTO N KY...WITH A MAX OF 5.6 INCHES IN BOONE COUNTY.  FLOODING HAS
BEEN WIDESPREAD IN THESE AREAS.  OVERNIGHT LLVL MSTR WL CONTINUE TO
FLOW INTO THE REGION ON A N INCREASING LLVL JET.  THERE WL BE CHGS
ALOFT HWVR...AS MODEL TIMESXNS INDICATE A WARMING AND DRYING TREND IN
THE MID-UPPER LVLS.  WITH THIS IN MIND...I XPCT TO SEE A GRADUAL
DECREASE IN PCPN CVRG ACRS THE AREA.  WL STILL SEE THE THREAT FOR
STRONG CONVECTION NEAR THE BNDRY HWVR...AND I FEEL AN FFA IS JUSTIFIED
OVERNIGHT WHERE THE HEAVIEST RAIN HAS FALLEN FROM EAST CENTRAL INDIANA
INTO NORTH CENTRAL KY.

FCST WIND FIELDS AND STABILITY PARAMETERS SUGGEST ORGANIZED/STRONG
CONVECTION REMAINS PSBL THROUGH FRI NGT...BEFORE COLD FRONT USHERS DRIER
AIR INTO THE REGION.  HAVE KEPT POPS IN THE CHC CATEGORY THROUGHOUT THE
PD...AND UNDERCUT MOS TEMPS JUST A BIT.
N
CMH 69/80/67/78 6344
CVG 69/81/68/79 4444
DAY 68/81/66/77 5344

JOHNSTONE

In the hours before

Local storm report, Jun 11, 2:25 PM EDT, 23 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OHIO
225 PM EDT THU JUN 11 1998

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

1020 AM                              IN   FLOODING
06/11/98   FRANKLIN                       WATER COVERING THE ROADS
                                          ACROSS THE WESTERN PORTION
                                          OF THE COUNTY ROADS CLOSED
                                          ACROSS THE COUNTY

1056 AM    SIDNEY                    OH   FLOODING
06/11/98   SHELBY                         STREET FLOODING ACROSS
                                          CITY OF SIDNEY WATER
                                          ACROSS ROADS IN WESTERN
                                          PORTION OF COUNTY

1105 AM                              KY   FLOODING
06/11/98   BOONE                          ROADS CLOSED DUE TO WATER
                                          ACROSS THE ROADS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 10, 8:39 PM EDT	Severe Thunderstorm Warning	ILN	Brown	16 min
Jun 11, 9:47 AM EDT	Flash Flood Warning	ILN	Shelby	3 hr
Jun 11, 10:51 AM EDT	Flash Flood Warning	ILN	Butler, Hamilton	2 hr
Jun 11, 10:51 AM EDT	Flash Flood Warning	ILN	Clermont	2 hr
Jun 11, 11:13 AM EDT	Flash Flood Warning	ILN	Darke	3 hr
Jun 11, 11:13 AM EDT	Flash Flood Warning	ILN	Miami	3 hr
Jun 11, 11:33 AM EDT	Flash Flood Warning	ILN	Hamilton	3 hr
Jun 11, 11:33 AM EDT	Flash Flood Warning	ILN	Clermont	3 hr
Jun 11, 12:44 PM EDT	Flash Flood Warning	ILN	Shelby	3 hr

Nearby

Flash Flood Warnings in Ohio, 1998 Every 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.