Alert archive / Ohio / Flash Flood Warnings in 2011

Flash Flood Warning 29, NWS Cleveland, OH

July 22, 2011Cuyahoga County, Ohio

NWS Cleveland, OH issued this flash flood warning at Jul 22, 2011, 3:42 PM EDT for Cuyahoga County, Ohio. It was in force for 5 hr. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jul 22, 2011, 3:42 PM EDT (19:42 UTC)
Expired
Jul 22, 2011, 8:46 PM EDT
In force
5 hr
Issued by
NWS Cleveland, OH
Area
Storm-based polygon
Flood severity
None

County Cuyahoga County, OH

The radar

The Cleveland radar (KCLE), 16 km from the middle of the area, began a volume at 19:43 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.

What was reported inside it

TimeReportWhereRemark
Jul 22, 4:30 PM EDTFLASH FLOODStrongsville, OHMILL STREAM COVERED ROADWAYS IN STRONGSVILLE. WATER ALREADY RECEDED.
Jul 22, 5:00 PM EDTFLASH FLOODStrongsville, OHN PEARL ROAD FLOODED.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 7.7 hours before the alert went out and 176 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, Pittsburgh, PA at 12:00Z on 2011-07-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3887 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, Pittsburgh, PA at 12:00Z on 2011-07-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -61 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
3887 J/kg
Mixed-layer CIN
-34 J/kg
Mixed-layer LCL
868 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
-61 m²/s²
0-3 km storm-relative helicity
-29 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.

695 
WGUS51 KCLE 221942
FFWCLE
OHC035-230200-
/O.NEW.KCLE.FF.W.0029.110722T1942Z-110723T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
342 PM EDT FRI JUL 22 2011

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CUYAHOGA COUNTY IN NORTHEAST OHIO...

* UNTIL 1000 PM EDT.

* AT 334 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE
  WARNED AREA. RAINFALL RATES OF OVER AN INCH AND A HALF PER HOUR 
  HAVE BEEN NOTED BY DOPPLER WEATHER RADAR OVER SOUTHERN CUYAHOGA 
  COUNTY. THESE EXTREME RAINFALL RATES OVER RECENTLY FLOODED AREAS 
  COULD LEAD TO RAPID RUNOFF AND FLASH FLOODING. THE HEAVY RAIN
  WILL MOVE NORTHEAST TOWARDS THE LAKE. ADDITIONAL STORMS WILL LIKELY
  BRING ADDITIONAL RAINFALL OVER THE NEXT COUPLE OF HOURS. 

* LOCATIONS IMPACTED INCLUDE...
  STRONGSVILLE...
  CLEVELAND...
  WESTLAKE...
  SOLON...

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 4157 8148 4157 8139 4135 8139 4135 8159
      4128 8157 4128 8188 4135 8188 4135 8197
      4151 8197 4149 8188 4150 8180 4149 8174
      4163 8150

$$
3 follow-up statements
837 
WGUS71 KCLE 222015
FFSCLE

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
415 PM EDT FRI JUL 22 2011

OHC035-230200-
/O.CON.KCLE.FF.W.0029.000000T0000Z-110723T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CUYAHOGA OH-
415 PM EDT FRI JUL 22 2011

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR CUYAHOGA COUNTY UNTIL
1000 PM EDT...

AT 412 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA.
DOPPLER RADAR ESTIMATED AS MUCH AS 2 TO 3 INCHES OF RAINFALL HAD FALLEN
OVER PORTIONS OF THE COUNTY. THE HEAVIEST RAIN FELL OVER THE EAST BRANCH OF 
THE ROCKY RIVER INCLUDING BIG CREEK...CHIPPEWA CREEK...AND BALDWIN CREEKS.
THESE STORMS WILL CONTINUE TO MOVE NORTHEAST TOWARDS THE LAKE THROUGH
500 PM...BRINGING ADDITIONAL RAINFALL. 

RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH
FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING
INCLUDE...CLEVELAND...STRONGSVILLE...CLEVELAND HEIGHTS...EUCLID...
LAKEWOOD...NORTH ROYALTON...PARMA...SOLON AND WESTLAKE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOST FLOOD RELATED DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO
CROSS BRIDGES...DIPS...OR OTHER LOW SPOTS IF WATER COVERS THE
ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON
FOOT OR IN A VEHICLE. TURN AROUND...DON'T DROWN!

A FLASH FLOOD WARNING MEANS THAT FLASH FLOODING IS IMMINENT OR
OCCURRING. IF YOU ARE IN THE WARNING AREA...MOVE TO HIGHER GROUND
IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE
IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO
CROSS A FLOODED AREA ON FOOT OR BY AUTOMOBILE.

&&

LAT...LON 4157 8148 4157 8139 4135 8139 4135 8159
      4128 8157 4128 8188 4135 8188 4135 8197
      4151 8197 4149 8188 4150 8180 4149 8174
      4163 8150

$$

SJAMISON
872 
WGUS71 KCLE 222219
FFSCLE

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
619 PM EDT FRI JUL 22 2011

OHC035-230200-
/O.CON.KCLE.FF.W.0029.000000T0000Z-110723T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CUYAHOGA OH-
619 PM EDT FRI JUL 22 2011

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR CUYAHOGA COUNTY UNTIL
1000 PM EDT...

AT 612 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THUNDERSTORMS WITH VERY HEAVY RAINFALL HAD MOVED ACROSS THE WARNED 
AREA. DOPPLER RADAR ESTIMATED EARLIER RAINFALL AMOUNTS OF ONE TO 
THREE INCHES...WITH THE HEAVIEST AMOUNTS OVER SOUTHERN CUYAHOGA 
COUNTY. SOME LIGHTER RAIN SHOWERS WILL MOVE INTO THE REGION THIS 
EVENING...WITH MINIMAL RAINFALL AMOUNTS EXPECTED. 

RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO 
OCCUR. SOME LOCATIONS THAT COULD EXPERIENCE FLOODING 
INCLUDE...STRONGSVILLE...CLEVELAND HEIGHTS...NORTH 
ROYALTON...PARMA...AND BRECKSVILLE. WITH THE HEAVIEST RAINFALL OVER 
THE SOUTH PORTIONS...STREAMS AND CREEKS NEAR THE ROCKY RIVER COULD 
COME OUT OF BANKS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOST FLOOD RELATED DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO
CROSS BRIDGES...DIPS...OR OTHER LOW SPOTS IF WATER COVERS THE
ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON
FOOT OR IN A VEHICLE. TURN AROUND...DON'T DROWN!

A FLASH FLOOD WARNING MEANS THAT FLASH FLOODING IS IMMINENT OR
OCCURRING. IF YOU ARE IN THE WARNING AREA...MOVE TO HIGHER GROUND
IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE
IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO
CROSS A FLOODED AREA ON FOOT OR BY AUTOMOBILE.

&&

LAT...LON 4157 8148 4157 8139 4135 8139 4135 8159
      4128 8157 4128 8188 4135 8188 4135 8197
      4151 8197 4149 8188 4150 8180 4149 8174
      4163 8150

$$

SJAMISON
891 
WGUS71 KCLE 230046
FFSCLE

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
846 PM EDT FRI JUL 22 2011

OHC035-230101-
/O.CAN.KCLE.FF.W.0029.000000T0000Z-110723T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CUYAHOGA OH-
846 PM EDT FRI JUL 22 2011

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR CUYAHOGA COUNTY 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 4157 8148 4157 8139 4135 8139 4135 8159
      4128 8157 4128 8188 4135 8188 4135 8197
      4151 8197 4149 8188 4150 8180 4149 8174
      4163 8150

$$

OUDEMAN

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 22, 11:21 AM EDTExcessive Heat WarningCLEAshland, Crawford, Hancock, Holmes, Huron, Knox and 8 more7 hr
Jul 22, 1:20 PM EDTSevere Thunderstorm WarningCLELucas, Ottawa, Sandusky, Wood40 min
Jul 22, 1:28 PM EDTSpecial Marine WarningCLE92 min
Jul 22, 1:55 PM EDTSevere Thunderstorm WarningCLECrawford, Seneca, Wyandot44 min
Jul 22, 2:03 PM EDTSevere Thunderstorm WarningCLELucas, Ottawa, Sandusky, Wood57 min
Jul 22, 2:23 PM EDTFlash Flood WarningCLEOttawa, Sandusky, Wood6 hr
Jul 22, 2:26 PM EDTSevere Thunderstorm WarningCLEMedina, Wayne31 min
Jul 22, 2:55 PM EDTSpecial Marine WarningCLE110 min
Jul 22, 2:58 PM EDTSevere Thunderstorm WarningCLEErie, Lorain22 min
Jul 22, 3:12 PM EDTSevere Thunderstorm WarningCLECuyahoga63 min
Jul 22, 3:32 PM EDTFlash Flood WarningCLELucas, Wood4 hr
Jul 22, 3:38 PM EDTSevere Thunderstorm WarningCLECuyahoga, Lorain52 min
Jul 22, 3:52 PM EDTFlash Flood WarningCLEMedina, Wayne5 hr
Jul 22, 3:54 PM EDTHeat AdvisoryCLEAshland, Crawford, Hancock, Holmes, Huron, Knox and 8 more28 hr
Jul 22, 3:58 PM EDTFlash Flood WarningCLEHancock, Seneca, Wyandot4 hr
Jul 22, 4:04 PM EDTFlash Flood WarningCLEGeauga, Summit5 hr
Jul 22, 4:23 PM EDTSevere Thunderstorm WarningCLEAshtabula, Cuyahoga, Geauga, Lake67 min
Jul 22, 4:31 PM EDTAreal Flood AdvisoryCLESandusky3 hr
Jul 22, 4:35 PM EDTFlash Flood WarningCLELake2 hr
Jul 22, 4:37 PM EDTSpecial Marine WarningCLE98 min
Jul 22, 4:49 PM EDTAreal Flood AdvisoryCLEAshtabula, Trumbull4 hr
Jul 22, 4:52 PM EDTSevere Thunderstorm WarningCLETrumbull40 min
Jul 22, 4:58 PM EDTSevere Thunderstorm WarningCLEStark, Summit, Wayne62 min
Jul 22, 6:54 PM EDTSevere Thunderstorm WarningCLEStark43 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.