Alert archive / Ohio / Flash Flood Warnings in 2011

Flash Flood Warning 11, NWS Cleveland, OH

May 14, 2011Hancock County, Marion County, Wyandot County, Ohio

NWS Cleveland, OH issued this flash flood warning at May 14, 2011, 2:31 PM EDT for Hancock County, Marion County, Wyandot 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 outline as issued.

The facts

Issued
May 14, 2011, 2:31 PM EDT (18:31 UTC)
Expired
May 14, 2011, 4:56 PM EDT
In force
2 hr
Issued by
NWS Cleveland, OH
Area
Storm-based polygon
Flood severity
None

Counties Hancock County, OH, Marion County, OH, Wyandot County, OH

The radar

The Cleveland radar (KCLE), 150 km from the middle of the area, began a volume at 18:30 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, 6.5 hours before the alert went out and 158 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 12:00Z on 2011-05-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 421 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 12:00Z on 2011-05-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -9 square meters per square second.19395878Sfc1 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
421 J/kg
Mixed-layer CIN
-13 J/kg
Mixed-layer LCL
609 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
-9 m²/s²
0-3 km storm-relative helicity
41 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.

314 
WGUS51 KCLE 141831
FFWCLE
OHC063-101-175-142230-
/O.NEW.KCLE.FF.W.0011.110514T1831Z-110514T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
231 PM EDT SAT MAY 14 2011

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHWESTERN MARION COUNTY IN NORTH CENTRAL OHIO
  SOUTHERN HANCOCK COUNTY IN NORTHWEST OHIO
  WESTERN WYANDOT COUNTY IN NORTHWEST OHIO

* UNTIL 630 PM EDT

* AT 225 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE      
  WARNED AREA. RADAR INDICATES 1.5 TO NEARLY 2.5 INCHES OF RAIN HAS  
  FALLEN IN PARTS OF SOUTHERN HANCOCK...SOUTHWEST WYANDOT AND        
  WESTERN MARION COUNTIES. ADDITIONAL RAIN WILL OCCUR DURING THE
  NEXT HOUR OR TWO IN MUCH OF THIS AREA...LIKELY RESULTING IN RAPID  
  FLOODING.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  FINDLAY...ARLINGTON...LA RUE...MARSEILLES...RAWSON AND VANLUE.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS...DRAINAGE DITCHES...AND STREAMS. FLOODING IS LIKELY ALONG LOW
LYING ROADS AND FARMLAND. NEVER DRIVE ACROSS A FLOODED ROAD. TURN
AROUND...DON'T DROWN!

&&

LAT...LON 4106 8342 4099 8342 4099 8340 4088 8339
      4074 8329 4055 8329 4058 8341 4068 8342
      4070 8344 4070 8348 4081 8349 4082 8386
      4106 8387

$$

ADAMS
1 follow-up statement
073 
WGUS71 KCLE 142056
FFSCLE

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
456 PM EDT SAT MAY 14 2011

OHC063-101-175-142111-
/O.CAN.KCLE.FF.W.0011.000000T0000Z-110514T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WYANDOT OH-HANCOCK OH-MARION OH-
456 PM EDT SAT MAY 14 2011

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR NORTHWESTERN
MARION...SOUTHERN HANCOCK AND WESTERN WYANDOT COUNTIES IS
CANCELLED...

EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. 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 4106 8342 4099 8342 4099 8340 4088 8339
      4074 8329 4055 8329 4058 8341 4068 8342
      4070 8344 4070 8348 4081 8349 4082 8386
      4106 8387

$$
TK

The office that day

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

IssuedProductOfficeCountiesLasted
May 13, 8:30 PM EDTAreal Flood AdvisoryCLEStark3 hr
May 13, 9:42 PM EDTFlash Flood WarningCLEAshland3 hr
May 14, 12:29 AM EDTAreal Flood AdvisoryCLEAshland6 hr
May 14, 4:19 AM EDTFlash Flood WatchCLEAshland, Ashtabula, Crawford, Cuyahoga, Erie, Geauga and 22 more19 hr
May 14, 1:59 PM EDTFlash Flood WarningCLECuyahoga, Lorain4 hr
May 14, 3:24 PM EDTFlash Flood WarningCLECrawford, Huron, Knox, Morrow, Richland, Sandusky and 2 more4 hr
May 14, 3:49 PM EDTFlash Flood WarningCLEAshland, Medina, Richland4 hr
May 14, 4:07 PM EDTFlash Flood WarningCLECuyahoga, Geauga, Lake4 hr
May 14, 4:36 PM EDTFlash Flood WarningCLEHolmes, Knox, Medina, Wayne4 hr
May 14, 6:00 PM EDTAreal Flood WarningCLECuyahoga, Lorain5 hr
May 14, 6:07 PM EDTFlash Flood WarningCLEPortage, Stark, Summit4 hr
May 14, 6:22 PM EDTFlash Flood WarningCLEAshtabula4 hr
May 14, 7:18 PM EDTFlash Flood WarningCLEAshtabula, Trumbull4 hr
May 14, 7:42 PM EDTAreal Flood WarningCLEAshland, Knox, Richland4 hr
May 14, 7:50 PM EDTAreal Flood WarningCLEMahoning4 hr

Nearby

Flash Flood Warnings in Ohio, 2011Every flash flood warning in 2011

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.