Alert archive / Ohio / Flash Flood Warnings in 2007

Flash Flood Warning 7, NWS Cleveland, OH

August 2, 2007Cuyahoga County, Ohio

NWS Cleveland, OH issued this flash flood warning at Aug 2, 2007, 3:40 PM EDT for Cuyahoga County, Ohio. It was in force for 3 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
Aug 2, 2007, 3:40 PM EDT (19:40 UTC)
Expired
Aug 2, 2007, 6:45 PM EDT
In force
3 hr
Issued by
NWS Cleveland, OH
Area
Counties, with a storm outline in the text
Flood severity
None

County Cuyahoga County, OH

What was reported inside it

TimeReportWhereRemark
Aug 2, 4:20 PM EDTFLASH FLOODCleveland, OHMANY ROADS IMPACTED BY HIGH WATER IN DOWNTOWN CLEVELAND. IN ADDITION...NUMEROUS CARS STALLED OUT IN AREAS OF HIGH WATER.
Aug 2, 4:40 PM EDTFLASH FLOODCleveland, OHMANY ROADS IMPACTED BY HIGH WATER IN DOWNTOWN CLEVELAND. IN ADDITION...NUMEROUS CARS STALLED OUT IN AREAS OF HIGH WATER.

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 173 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 2007-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 635 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, Pittsburgh, PA at 12:00Z on 2007-08-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -19 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
635 J/kg
Mixed-layer CIN
-69 J/kg
Mixed-layer LCL
1346 m above ground
0-6 km bulk shear
4 kt
0-1 km storm-relative helicity
-19 m²/s²
0-3 km storm-relative helicity
0 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.

000 
WGUS51 KCLE 021942
FFWCLE
OHC035-022245-
/X.NEW.KCLE.FF.W.0007.070802T1940Z-070802T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
340 PM EDT THU AUG 2 2007

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

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

* UNTIL 645 PM EDT

* AT 336 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  FLASH FLOODING FROM A THUNDERSTORM NEAR CLEVELAND...MOVING EAST    
  AT 10 MPH. RADAR INDICATED THAT UP TO 2 INCHES OF RAIN FELL SINCE  
  3 PM NEAR CLEVELAND HEIGHTS AND SHAKER HEIGHTS. ADDITIONAL HEAVY   
  RAIN IS LIKELY ACROSS EASTERN CUYAHOGA COUNTY.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  CLEVELAND HEIGHTS AND SOLON

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

A FLASH FLOOD WARNING MEANS THAT 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
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE. TURN AROUND... DONT DROWN

LAT...LON 4161 8170 4140 8170 4135 8138 4156 8137

$$

MRD
3 follow-up statements
000 
WGUS71 KCLE 021956
FFSCLE

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
355 PM EDT THU AUG 2 2007

OHC035-022245-
/X.CON.KCLE.FF.W.0007.000000T0000Z-070802T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CUYAHOGA OH-
355 PM EDT THU AUG 2 2007

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 645 PM EDT FOR 
CUYAHOGA COUNTY...

AT 354 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A THUNDERSTORM PRODUCING FLASH FLOODING OVER THE WARNED 
AREA. RADAR INDICATED THAT 2 TO 3 INCHES OF RAIN FELL BETWEEN 3 PM 
AND 350 PM FROM LAKEWOOD EAST TO UNIVERSITY HEIGHTS. ADDITIONAL 
HEAVY RAINFALL RATES OF 2 TO 4 INCHES PER HOUR ARE POSSIBLE FROM 
CLEVELAND TO UNIVERSITY HEIGHTS.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO CLEVELAND 
HEIGHTS...CLEVELAND AND UNIVERSITY HEIGHTS.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

LAT...LON 4161 8170 4140 8170 4135 8138 4156 8137

$$

MRD
000 
WGUS71 KCLE 022017
FFSCLE

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
415 PM EDT THU AUG 2 2007

OHC035-022245-
/X.CON.KCLE.FF.W.0007.000000T0000Z-070802T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CUYAHOGA OH-
415 PM EDT THU AUG 2 2007

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 645 PM EDT FOR 
CUYAHOGA COUNTY...

AT 412 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A THUNDERSTORM PRODUCING FLASH FLOODING OVER THE WARNED 
AREA. THERE HAVE BEEN REPORTS OF FLOODING IN DOWNTOWN CLEVELAND. 
MARGINAL ROAD HAS WATER ON IT. BURKE LAKEFRONT AIRPORT REPORTED OVER 
2 INCHES OF RAIN IN AN HOUR...AND NATIONAL WEATHER SERVICE DOPPLER 
RADAR INDICATED OVER 3 INCHES OF RAIN FELL IN DOWNTOWN CLEVELAND IN 
THE PAST HOUR. THIS IS AN EXTREMELY DANGEROUS SITUATION. 
SIGNIFICANT URBAN FLASH FLOODING IS POSSIBLE IN THE CITY OF 
CLEVELAND.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO CLEVELAND 
HEIGHTS AND CLEVELAND

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

LAT...LON 4161 8170 4140 8170 4135 8138 4156 8137

$$

MRD
000 
WGUS71 KCLE 022152
FFSCLE

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
549 PM EDT THU AUG 2 2007

OHC035-022245-
/X.CON.KCLE.FF.W.0007.000000T0000Z-070802T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CUYAHOGA OH-
549 PM EDT THU AUG 2 2007

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 645 PM EDT FOR 
CUYAHOGA COUNTY...

ALTHOUGH THE HEAVY RAIN HAS ENDED...FLOODING IS STILL OCCURRING IN 
AND NEAR THE CITY OF CLEVELAND WITH MANY ROADS IMPACTED BY HIGH 
WATER. NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT 3 TO 6 
INCHES OF RAIN FELL BETWEEN 330 PM AND 5 PM IN AND NEAR THE CITY OF 
CLEVELAND. IN ADDITION...SEVERAL RAIN GAGES NEAR CLEVELAND REPORTED 
3 TO 5 INCHES OF RAIN. ADDITIONAL HEAVY RAIN IS NOT EXPECTED 
TONIGHT...HOWEVER FLOODING WILL STILL CONTINUE THROUGH EVENING RUSH 
HOUR AND ADDITIONAL FLOOD WARNINGS MAY BE NEEDED THROUGH THE EVENING 
HOURS.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

LAT...LON 4161 8170 4140 8170 4135 8138 4156 8137

$$

MRD

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 2, 3:24 PM EDTMarine Weather StatementCLE96 min
Aug 2, 3:33 PM EDTSpecial Marine WarningCLE57 min
Aug 2, 3:33 PM EDTSevere Thunderstorm WarningCLECuyahoga42 min
Aug 2, 4:12 PM EDTSevere Thunderstorm WarningCLECuyahoga46 min
Aug 2, 4:26 PM EDTSpecial Marine WarningCLE43 min
Aug 2, 4:55 PM EDTSevere Thunderstorm WarningCLEAshtabula44 min
Aug 2, 5:15 PM EDTAreal Flood AdvisoryCLEAshtabula116 min
Aug 2, 6:43 PM EDTAreal Flood WarningCLECuyahoga4 hr

Nearby

Flash Flood Warnings in Ohio, 2007Every flash flood warning in 2007

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.