Alert archive / Ohio / Flash Flood Warnings in 2012

Flash Flood Warning 10, NWS Wilmington, OH

May 4, 2012Auglaize County, Hardin County, Logan County, Ohio

NWS Wilmington, OH issued this flash flood warning at May 4, 2012, 4:05 PM EDT for Auglaize County, Hardin County, Logan County, Ohio. It was in force for 65 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 4, 2012, 4:05 PM EDT (20:05 UTC)
Expired: May 4, 2012, 5:10 PM EDT
In force: 65 min
Issued by: NWS Wilmington, OH
Area: Storm-based polygon
Flood severity: None

Counties Auglaize County, OH, Hardin County, OH, Logan County, OH

The radar

The Cincinnati radar (KILN), 131 km from the middle of the area, began a volume at 20:08 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 12:00Z, 8.1 hours before the alert went out and 130 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: 476 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 540 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 88 m²/s²
0-3 km storm-relative helicity: 44 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.

185 
WGUS51 KILN 042005
FFWILN
OHC011-065-091-042300-
/O.NEW.KILN.FF.W.0010.120504T2005Z-120504T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE WILMINGTON OH
405 PM EDT FRI MAY 4 2012

THE NATIONAL WEATHER SERVICE IN WILMINGTON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EASTERN AUGLAIZE COUNTY IN WEST CENTRAL OHIO...
  SOUTHWESTERN HARDIN COUNTY IN WEST CENTRAL OHIO...
  NORTHWESTERN LOGAN COUNTY IN WEST CENTRAL OHIO...

* UNTIL 700 PM EDT.

* AT 401 PM EDT...RADAR INDICATED THAT THUNDERSTORMS HAD PRODUCED   
  HEAVY RAINFALL ACROSS THE WARNED AREA. RADAR ESTIMATED AS MUCH AS 
  2 INCHES OF RAIN HAD FALLEN OVER THE REGION SINCE 230 PM. 

* HEAVY RAIN CONTINUES TO FALL ACROSS THE WARNED AREA WITH ANOTHER   
  1 TO 2 INCHES POSSIBLE THROUGH 600 PM EDT. RUNOFF FROM THIS   
  EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...LAKEVIEW...
RUSSELLS POINT AND WAYNESFIELD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

NEVER DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. ONLY A FEW INCHES
OF RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE. FIND AN
ALTERNATE ROUTE OR WAIT UNTIL THE WATER RECEDES.

DO NOT ALLOW CHILDREN TO PLAY NEAR STORM DRAINS OR FLOODED CREEKS AND
STREAMS. THEY CAN EASILY BE SWEPT AWAY OR PULLED UNDER BY FAST MOVING
WATER.

&&

LAT...LON 4067 8367 4056 8371 4042 8391 4050 8404
      4061 8408 4065 8388 4071 8373

$$

1 follow-up statement

219 
WGUS71 KILN 042110
FFSILN

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
510 PM EDT FRI MAY 4 2012

OHC011-065-091-042120-
/O.CAN.KILN.FF.W.0010.000000T0000Z-120504T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
AUGLAIZE OH-HARDIN OH-LOGAN OH-
510 PM EDT FRI MAY 4 2012

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR NORTHWESTERN
LOGAN...SOUTHWESTERN HARDIN AND EASTERN AUGLAIZE COUNTIES HAS BEEN
CANCELLED...

STREAMS AND CREEKS IN THE WARNED AREA HAVE RECEDED OR WERE BEGINNING
TO RECEDE...ENDING THE FLOOD THREAT. IF FLOODING HAS BEEN OBSERVED...
PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY.

LAT...LON 4067 8367 4056 8371 4042 8391 4050 8404
      4061 8408 4065 8388 4071 8373

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 4, 2:43 PM EDT	Special Weather Statement	ILN	Auglaize	32 min
May 4, 2:47 PM EDT	Areal Flood Advisory	ILN	Auglaize	88 min
May 4, 3:15 PM EDT	Special Weather Statement	ILN	Hardin	30 min
May 4, 3:26 PM EDT	Areal Flood Advisory	ILN	Hardin	94 min
May 4, 4:38 PM EDT	Special Weather Statement	ILN	Butler	37 min
May 4, 4:59 PM EDT	Severe Thunderstorm Warning	ILN	Butler, Clinton, Greene, Warren	34 min
May 4, 5:08 PM EDT	Severe Thunderstorm Warning	ILN	Greene, Montgomery	26 min
May 4, 5:11 PM EDT	Special Weather Statement	ILN	Logan	34 min
May 4, 5:39 PM EDT	Special Weather Statement	ILN	Champaign	36 min
May 4, 5:42 PM EDT	Areal Flood Advisory	ILN	Champaign, Logan, Union	2 hr
May 4, 5:44 PM EDT	Tornado Warning	ILN	Champaign	22 min
May 4, 6:17 PM EDT	Special Weather Statement	ILN	Champaign	28 min
May 4, 6:29 PM EDT	Special Weather Statement	ILN	Madison	31 min
May 4, 6:37 PM EDT	Special Weather Statement	ILN	Miami	23 min
May 4, 6:45 PM EDT	Severe Thunderstorm Warning	ILN	Fayette, Franklin, Madison, Pickaway	45 min
May 4, 6:49 PM EDT	Areal Flood Advisory	ILN	Delaware, Franklin, Madison, Union	116 min
May 4, 6:54 PM EDT	Special Weather Statement	ILN	Warren	66 min
May 4, 7:36 PM EDT	Areal Flood Advisory	ILN	Auglaize, Champaign, Clark, Greene, Logan, Madison and 4 more	5 hr
May 4, 7:50 PM EDT	Special Weather Statement	ILN	Adams	25 min
May 4, 7:53 PM EDT	Flash Flood Warning	ILN	Champaign, Clark	4 hr
May 4, 7:55 PM EDT	Areal Flood Advisory	ILN	Delaware, Fairfield, Franklin, Hocking, Licking, Madison and 2 more	4 hr

Nearby

Flash Flood Warnings in Ohio, 2012 Every flash flood warning in 2012

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.