Alert archive / Ohio / Flash Flood Warnings in 2011

Flash Flood Warning 36, NWS Cleveland, OH

July 23, 2011Ottawa County, Sandusky County, Ohio

NWS Cleveland, OH issued this flash flood warning at Jul 23, 2011, 7:36 PM EDT for Ottawa County, Sandusky County, Ohio. It was in force for 6 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
Jul 23, 2011, 7:36 PM EDT (23:36 UTC)
Expired
Jul 24, 2011, 1:12 AM EDT
In force
6 hr
Issued by
NWS Cleveland, OH
Area
Storm-based polygon
Flood severity
None

Counties Ottawa County, OH, Sandusky County, OH

The radar

The Cleveland radar (KCLE), 126 km from the middle of the area, began a volume at 23:37 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

Detroit, MI (KDTX), launched 12:00Z, 11.6 hours before the alert went out and 137 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, Detroit, MI at 12:00Z on 2011-07-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 180 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Detroit, MI at 12:00Z on 2011-07-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 38 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
180 J/kg
Mixed-layer CIN
-171 J/kg
Mixed-layer LCL
1010 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
38 m²/s²
0-3 km storm-relative helicity
60 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

384 
WGUS51 KCLE 232336
FFWCLE
OHC123-143-240600-
/O.NEW.KCLE.FF.W.0036.110723T2336Z-110724T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
736 PM EDT SAT JUL 23 2011

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHWESTERN SANDUSKY COUNTY IN NORTHWEST OHIO...
  SOUTHWESTERN OTTAWA COUNTY IN NORTHWEST OHIO...

* UNTIL 200 AM EDT SUNDAY.

* AT 719 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. AN  
  ADDITIONAL 1.5 INCHES OF RAIN IS LIKELY BETWEEN 730 PM AND 830 PM. 
  RUNOFF WILL CONTINUE FOR SEVERAL HOURS AND RISES ON AREA CREEKS    
  AND STREAMS WILL OCCUR THIS EVENING.

* LOCATIONS IMPACTED INCLUDE...
  ELMORE...
  WOODVILLE...
  GIBSONBURG...
  GENOA...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD RELATED DEATHS OCCUR
IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS WATER COVERED BRIDGES...
DIPS...OR LOW WATER CROSSINGS. NEVER TRY TO CROSS A FLOWING STREAM...
EVEN A SMALL ONE...ON FOOT OR IN A VEHICLE.

&&

LAT...LON 4149 8341 4156 8341 4157 8341 4157 8324
      4136 8324 4136 8342 4149 8342

$$
OUDEMAN
1 follow-up statement
422 
WGUS71 KCLE 240512
FFSCLE

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
112 AM EDT SUN JUL 24 2011

OHC123-143-240527-
/O.CAN.KCLE.FF.W.0036.000000T0000Z-110724T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
OTTAWA OH-SANDUSKY OH-
112 AM EDT SUN JUL 24 2011

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR NORTHWESTERN
SANDUSKY AND SOUTHWESTERN OTTAWA 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.

REPORT FLOODING TO THE NEAREST LAW ENFORCEMENT AGENCY SO THAT THEY
MAY TAKE APPROPRIATE ACTION TO CLOSE FLOODED ROADWAYS. THEY WILL
RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN CLEVELAND.

LAT...LON 4149 8341 4156 8341 4157 8341 4157 8324
      4136 8324 4136 8342 4149 8342

$$

KIELTYKA

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 22, 11:48 PM EDTSpecial Marine WarningCLE87 min
Jul 23, 12:00 AM EDTSevere Thunderstorm WarningCLEHolmes, Knox60 min
Jul 23, 1:29 AM EDTAreal Flood AdvisoryCLEKnox3 hr
Jul 23, 2:46 AM EDTFlash Flood WarningCLESeneca11 hr
Jul 23, 3:40 AM EDTFlash Flood WatchCLEAshland, Crawford, Cuyahoga, Erie, Geauga, Hancock and 21 more26 hr
Jul 23, 4:06 AM EDTAreal Flood AdvisoryCLELorain4 hr
Jul 23, 6:45 AM EDTAreal Flood AdvisoryCLEAshland, Crawford, Huron, Lorain, Richland3 hr
Jul 23, 8:50 AM EDTAreal Flood AdvisoryCLEOttawa, Sandusky4 hr
Jul 23, 2:00 PM EDTAreal Flood WarningCLESeneca8 hr
Jul 23, 2:38 PM EDTAreal Flood AdvisoryCLEWyandot4 hr
Jul 23, 2:43 PM EDTAreal Flood AdvisoryCLEMarion, Morrow4 hr
Jul 23, 3:07 PM EDTFlash Flood WarningCLEWyandot6 hr
Jul 23, 3:59 PM EDTHeat AdvisoryCLEAshland, Crawford, Hancock, Holmes, Huron, Knox and 8 more23 hr
Jul 23, 5:20 PM EDTSevere Thunderstorm WarningCLEHancock55 min
Jul 23, 5:25 PM EDTAreal Flood AdvisoryCLEHolmes3 hr
Jul 23, 5:44 PM EDTSpecial Marine WarningCLE76 min
Jul 23, 5:53 PM EDTSevere Thunderstorm WarningCLESandusky, Seneca, Wood67 min
Jul 23, 5:58 PM EDTSevere Thunderstorm WarningCLELorain62 min
Jul 23, 6:16 PM EDTSpecial Marine WarningCLE89 min
Jul 23, 6:26 PM EDTAreal Flood AdvisoryCLEWood4 hr
Jul 23, 6:52 PM EDTAreal Flood AdvisoryCLECuyahoga3 hr
Jul 23, 7:12 PM EDTSevere Thunderstorm WarningCLELucas, Ottawa, Sandusky, Seneca, Wood78 min
Jul 23, 7:15 PM EDTSpecial Marine WarningCLE2 hr
Jul 23, 7:16 PM EDTSevere Thunderstorm WarningCLECuyahoga, Geauga44 min
Jul 23, 7:38 PM EDTSevere Thunderstorm WarningCLEAshtabula, Geauga, Trumbull67 min
Jul 23, 7:56 PM EDTAreal Flood AdvisoryCLEHancock3 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.