Alert archive / Ohio / Flash Flood Warnings in 2007

Flash Flood Warning 21, NWS Northern Indiana

August 22, 2007Van Wert County, Ohio

NWS Northern Indiana issued this flash flood warning at Aug 22, 2007, 2:38 AM EDT for Van Wert County, Ohio. It was in force for 3 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
Aug 22, 2007, 2:38 AM EDT (06:38 UTC)
Expired
Aug 22, 2007, 6:00 AM EDT
In force
3 hr
Issued by
NWS Northern Indiana
Area
Whole counties

County Van Wert County, OH

The radar

The Northern Indiana radar (KIWX), 109 km from the middle of the area, began a volume at 06:40 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, 6.6 hours before the alert went out and 172 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-pSkew-T log-p diagram, Cncnati-Daytn, OH at 00:00Z on 2007-08-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1609 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cncnati-Daytn, OH at 00:00Z on 2007-08-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 61 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
1609 J/kg
Mixed-layer CIN
-67 J/kg
Mixed-layer LCL
804 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
61 m²/s²
0-3 km storm-relative helicity
34 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.9

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KIWX 220641
FFWIWX
OHC161-221000-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NORTHERN INDIANA
238 AM EDT WED AUG 22 2007

THE NATIONAL WEATHER SERVICE IN NORTHERN INDIANA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  VAN WERT COUNTY IN WEST CENTRAL OHIO

* UNTIL 600 AM EDT

* AT 236 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN FROM THUNDERSTORMS ALONG A LINE EXTENDING FROM 3
  MILES EAST OF CONVOY TO WREN...OR ALONG A LINE EXTENDING FROM 5
  MILES NORTHWEST OF VAN WERT TO 5 MILES EAST OF DECATUR...MOVING
  EAST AT 15 MPH.

* THUNDERSTORMS PRODUCING FLASH FLOODING WILL AFFECT THE FOLLOWING
LOCATIONS...
  GLENMORE...DULL AND ABANAKA...
  WETSEL AND OHIO CITY...
  MIDDLE POINT...
  JONESTOWN AND VENEDOCIA...
  CONVERSE AND ELGIN...
  VAN WERT...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL 
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. IN ADDITION...FLOODING OF 
COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND 
OTHER LOW LYING AREAS IS LIKELY.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

LAT...LON 4099 8439 4073 8439 4073 8480 4099 8480
TIME...MOT...LOC 0638Z 280DEG 32KT 4091 8457 4080 8476

$$
1 follow-up statement
000 
WGUS73 KIWX 220852
FFSIWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
449 AM EDT WED AUG 22 2007

OHC161-220859-
VAN WERT OH-
449 AM EDT WED AUG 22 2007

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR VAN WERT COUNTY...

THE THUNDERSTORMS WHICH PROMPTED THE WARNING HAVE EXITED THE AREA. 
COUNTY DISPATCH OFFICIALS HAVE RECEIVED NO NEW REPORTS OF FLOODING 
ACROSS THE WARNED AREA. AS A RESULT...THE WARNING HAS BEEN 
CANCELLED. 

IF YOU HAVE FLOODING TO REPORT...YOU CAN CALL YOUR LOCAL LAW
ENFORCEMENT AGENCY FOR RELAY TO THE NATIONAL WEATHER SERVICE.

LAT...LON 4099 8439 4073 8439 4073 8480 4099 8480
TIME...MOT...LOC 0849Z 280DEG 32KT 4070 8306 4059 8325

$$

The office that day

Everything else NWS Northern Indiana issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 22, 7:38 AM EDTFlash Flood WarningIWXPutnam3 hr
Aug 22, 8:50 AM EDTFlash Flood WarningIWXAllen3 hr

Nearby

Flash Flood Warnings in Ohio, 2007Every flash flood warning in 2007

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.