Alert archive / Ohio / Flash Flood Warnings in 2011

Flash Flood Warning 24, NWS Cleveland, OH

July 19, 2011Cuyahoga County, Lorain County, Ohio

NWS Cleveland, OH issued this flash flood warning at Jul 19, 2011, 3:26 AM EDT for Cuyahoga County, Lorain County, Ohio. It was in force for 6 hr. 3 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 19, 2011, 3:26 AM EDT (07:26 UTC)
Expired: Jul 19, 2011, 9:00 AM EDT
In force: 6 hr
Issued by: NWS Cleveland, OH
Area: Storm-based polygon
Flood severity: None

Counties Cuyahoga County, OH, Lorain County, OH

The radar

The Cleveland radar (KCLE), 3 km from the middle of the area, began a volume at 07:28 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

Time	Report	Where	Remark
Jul 19, 4:00 AM EDT	FLASH FLOOD	Berea, OH	2-3 FEET OF WATER IN BASEMENTS. INTERSECTION OF N ROCKY RIVER AND LINDBERG FLOODED.
Jul 19, 4:00 AM EDT	FLASH FLOOD	North Olmsted, OH	INTERSECTION OF GREAT NORTHERN BLVD AND COUNTRY CLUB BLVD FLOODED WITH AROUND 3 FEET OF WATER. WATER RESCUES CONDUCTED BY LOCAL RESPONDERS. INTERSECTION OF BROOKPARK AND DOVER CENTER FLOODED AS WELL.
Jul 19, 4:51 AM EDT	FLASH FLOOD	Westlake, OH	INTERSECTIONS OF HARDING-BREWSTER AND CINNAMON WAY-CANTEBERRY WERE CLOSED DUE TO FLOODING.

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 00:00Z, 7.4 hours before the alert went out and 188 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 506 J/kg
Mixed-layer CIN: -90 J/kg
Mixed-layer LCL: 1027 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 97 m²/s²
0-3 km storm-relative helicity: 99 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.8

Open this sounding in Storm Lab

The text

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

308 
WGUS51 KCLE 190726
FFWCLE
OHC035-093-191300-
/O.NEW.KCLE.FF.W.0024.110719T0726Z-110719T1300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
326 AM EDT TUE JUL 19 2011

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHEASTERN LORAIN COUNTY IN NORTH CENTRAL OHIO...
  SOUTHWESTERN CUYAHOGA COUNTY IN NORTHEAST OHIO...

* UNTIL 900 AM EDT.

* AT 320 AM EDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED 
  THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED
  AREA. DOPPLER RADAR ESTIMATES AS MUCH AS 2 TO 3 INCHES OF RAIN
  HAS FALLEN OVER THE WARNED AREA. THE TORRENTIAL RATE OF THIS 
  RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR. 

* LOCATIONS IMPACTED INCLUDE...
  STRONGSVILLE...
  WESTLAKE...
  NORTH RIDGEVILLE...
  LAKEWOOD...
  BEREA...
  NORTH OLMSTED...

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 4148 8188 4149 8175 4129 8180 4132 8203
      4151 8199

$$

3 follow-up statements

994 
WGUS71 KCLE 190826
FFSCLE

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
426 AM EDT TUE JUL 19 2011

OHC035-093-191300-
/O.CON.KCLE.FF.W.0024.000000T0000Z-110719T1300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CUYAHOGA OH-LORAIN OH-
426 AM EDT TUE JUL 19 2011

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR NORTHEASTERN LORAIN AND
SOUTHWESTERN CUYAHOGA COUNTIES UNTIL 900 AM EDT...

AT 415 AM EDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED
FLOODING ACROSS PORTIONS OF THE WARNED AREA DUE TO EARLIER 
THUNDERSTORMS WITH VERY HEAVY RAINFALL. DOPPLER RADAR ESTIMATED
UPWARDS OF THREE INCHES OF RAIN FELL OVER EASTERN LORAIN COUNTY 
AND WESTERN CUYAHOGA COUNTY. LOW LYING AND POOR DRAINAGE AREAS...AS 
WELL AS AREA STREAMS AND CREEKS WILL FILL RAPIDLY. BASEMENT FLOODING
IS ALSO POSSIBLE AS RAPID RUNOFF OCCURS. THOUGH THE RAINFALL HAS
DISSIPATED THE RUNOFF WILL CONTINUE INTO THE MORNING HOURS. MORNING 
COMMUTERS SHOULD AVOID TRAVELING ALONG ROADS ALONG RAPIDLY RISING
STREAMS AND CREEKS. 

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING
INCLUDE...STRONGSVILLE...LAKEWOOD...OLMSTED FALLS...BEREA...NORTH
RIDGEVILLE AND WESTLAKE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF DRIVING...SLOW DOWN! BE ALERT FOR LOW
SPOTS...DIPS...AND UNDERPASSES WHICH MAY BE FLOODED. PEOPLE IN LOW
LYING AREAS ALONG CREEKS AND STREAMS SHOULD MOVE TO HIGHER GROUND TO
ESCAPE RISING WATER LEVELS.

&&

LAT...LON 4148 8188 4149 8175 4129 8180 4132 8203
      4151 8199

$$

SJ

511 
WGUS71 KCLE 190919
FFSCLE

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
519 AM EDT TUE JUL 19 2011

OHC035-093-191300-
/O.CON.KCLE.FF.W.0024.000000T0000Z-110719T1300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CUYAHOGA OH-LORAIN OH-
519 AM EDT TUE JUL 19 2011

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR NORTHEASTERN LORAIN AND
SOUTHWESTERN CUYAHOGA COUNTIES UNTIL 900 AM EDT...

AT 510 AM EDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED THAT FLASH
FLOODING WAS OCCURRING IN ACROSS THE WARNED AREA. SEVERAL ROADS ARE CLOSED
DUE TO HIGH WATER MAINLY IN THE TOWNS OF BEREA...NORTH OLMSTED...AND NORTH
ROYALTON. THE FLOOD WATERS ARE EXPECTED TO RECEDE OVER THE COMING HOUR 
OR TWO...HOWEVER DEBRIS AND WASHED OUT ROADS WILL CONTINUE TO BE A HAZARD
TO MOTORISTS. SEVERAL STREAMS AND CREEKS ARE RUNNING DANGEROUSLY HIGH...SO
PEOPLE ARE ADVISED TO STAY CLEAR OF ANY HIGH WATER. NEVER ENTER FLOOD WATERS. 

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 4148 8188 4149 8175 4129 8180 4132 8203
      4151 8199

$$

JAMISON

359 
WGUS71 KCLE 191126
FFSCLE

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
726 AM EDT TUE JUL 19 2011

OHC035-093-191300-
/O.CON.KCLE.FF.W.0024.000000T0000Z-110719T1300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CUYAHOGA OH-LORAIN OH-
726 AM EDT TUE JUL 19 2011

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR NORTHEASTERN LORAIN AND
SOUTHWESTERN CUYAHOGA COUNTIES UNTIL 900 AM EDT...

AT 716 AM EDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED THAT FLASH 
FLOODING WAS OCCURRING IN WARNED AREA...MAINLY OVER NORTH 
OLMSTED...BEREA...AND WESTLAKE. EARLY MORNING STORMS BROUGHT
TORRENTIAL RAIN TO THE AREA WITH AMOUNTS IN EXCESS OF 3 INCHES. THE 
RAIN FELL OVER A TWO HOUR TIME PERIOD...WHICH RESULTED IN RAPID 
RUNOFF. THE FLOOD WATERS WILL GRADUALLY RECEDE THROUGH THE MORNING 
HOURS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. TURN AROUND...DON'T DROWN!

&&

LAT...LON 4148 8188 4149 8175 4129 8180 4132 8203
      4151 8199

$$

JAMISON

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 18, 9:50 PM EDT	Areal Flood Advisory	CLE	Hancock	3 hr
Jul 18, 11:20 PM EDT	Special Marine Warning	CLE		85 min
Jul 19, 12:25 AM EDT	Special Marine Warning	CLE		95 min
Jul 19, 2:36 AM EDT	Areal Flood Advisory	CLE	Cuyahoga, Lorain	5 hr
Jul 19, 3:21 AM EDT	Areal Flood Advisory	CLE	Cuyahoga, Geauga, Medina, Portage, Summit, Trumbull	4 hr
Jul 19, 4:19 AM EDT	Flash Flood Warning	CLE	Cuyahoga	5 hr
Jul 19, 4:32 AM EDT	River Flood Warning	CLE	Geauga, Portage, Summit	7 hr
Jul 19, 4:33 AM EDT	Heat Advisory	CLE	Ashland, Crawford, Cuyahoga, Erie, Hancock, Holmes and 14 more	39 hr
Jul 19, 4:39 AM EDT	Flash Flood Warning	CLE	Medina, Stark, Summit	6 hr
Jul 19, 5:28 AM EDT	River Flood Warning	CLE	Stark	16 hr
Jul 19, 6:46 AM EDT	River Flood Warning	CLE	Cuyahoga	22 hr
Jul 19, 8:59 AM EDT	Areal Flood Warning	CLE	Cuyahoga	6 hr
Jul 19, 10:57 AM EDT	Areal Flood Warning	CLE	Medina, Stark, Summit	6 hr

Nearby

Flash Flood Warnings in Ohio, 2011 Every 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.