Alert archive / Ohio / Flash Flood Warnings in 2011

Flash Flood Warning 37, NWS Cleveland, OH

August 18, 2011Lucas County, Ohio

NWS Cleveland, OH issued this flash flood warning at Aug 18, 2011, 7:04 PM EDT for Lucas 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 outline as issued.

The facts

Issued
Aug 18, 2011, 7:04 PM EDT (23:04 UTC)
Expired
Aug 18, 2011, 10:04 PM EDT
In force
3 hr
Issued by
NWS Cleveland, OH
Area
Storm-based polygon
Flood severity
None

County Lucas County, OH

The radar

The Detroit radar (KDTX), 121 km from the middle of the area, began a volume at 23:06 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, 11.1 hours before the alert went out and 123 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 2011-08-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 743 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, Detroit, MI at 12:00Z on 2011-08-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 24 square meters per square second.1939Sfc1 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
743 J/kg
Mixed-layer CIN
-45 J/kg
Mixed-layer LCL
1028 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
24 m²/s²
0-3 km storm-relative helicity
54 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.

581 
WGUS51 KCLE 182304
FFWCLE
OHC095-190300-
/O.NEW.KCLE.FF.W.0037.110818T2304Z-110819T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
704 PM EDT THU AUG 18 2011

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  LUCAS COUNTY IN NORTHWEST OHIO...

* UNTIL 1100 PM EDT.

* AT 700 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
SLOW MOVING THUNDERSTORM.  RADAR INDICATES SOME PORTIONS OF EASTERN 
LUCAS COUNTY HAS RECEIVED MORE THAN 3 INCHES OF RAIN.  SEVERE STREET 
FLOODING IS LIKLEY. 

* LOCATIONS IMPACTED INCLUDE...
  WATERVILLE...
  TOLEDO...
  SYLVANIA...
  WHITEHOUSE...

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.

&&

LAT...LON 4172 8388 4173 8345 4173 8341 4170 8342
      4171 8331 4164 8320 4162 8323 4162 8357
      4157 8361 4153 8371 4149 8371 4146 8375
      4142 8388

$$
1 follow-up statement
470 
WGUS71 KCLE 190204
FFSCLE

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
1004 PM EDT THU AUG 18 2011

OHC095-190216-
/O.CAN.KCLE.FF.W.0037.000000T0000Z-110819T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LUCAS OH-
1004 PM EDT THU AUG 18 2011

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR LUCAS COUNTY IS
CANCELLED...

WIDESPREAD URBAN AND LOWLAND FLOODING WAS REPORTED EARLIER IN THE 
EVENING.  THE THREAT FOR ADDITIONAL RAINFALL HAS ENDED SO FLOOD 
WATERS WILL CONTINUE TO SLOWLY RECEDE.  PONDING OF WATERS ON 
ROADWAYS CAN BE EXPECTED FOR A COUPLE MORE HOURS.  

STREAMS AND CREEKS IN THE WARNED AREA HAVE ALSO BEGUN TO RECEDE. IF 
FLOODING HAS BEEN OBSERVED...PLEASE REPORT IT TO YOUR LOCAL LAW 
ENFORCEMENT AGENCY.

LAT...LON 4172 8388 4173 8345 4173 8341 4170 8342
      4171 8331 4164 8320 4162 8323 4162 8357
      4157 8361 4153 8371 4149 8371 4146 8375
      4142 8388

$$

KUBINA

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 18, 5:30 PM EDTSpecial Marine WarningCLE2 hr
Aug 18, 6:27 PM EDTSevere Thunderstorm WarningCLELucas, Ottawa63 min
Aug 18, 6:30 PM EDTSpecial Marine WarningCLE2 hr
Aug 18, 6:49 PM EDTAreal Flood WarningCLELucas3 hr
Aug 18, 7:28 PM EDTSevere Thunderstorm WarningCLELucas47 min
Aug 18, 7:58 PM EDTSevere Thunderstorm WarningCLEOttawa, Wood62 min

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.