Alert archive / Ohio / Flash Flood Warnings in 2011

Flash Flood Warning 25, NWS Cleveland, OH

July 19, 2011Cuyahoga County, Ohio

NWS Cleveland, OH issued this flash flood warning at Jul 19, 2011, 4:19 AM EDT for Cuyahoga County, Ohio. It was in force for 5 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 19, 2011, 4:19 AM EDT (08:19 UTC)
Expired: Jul 19, 2011, 9:00 AM 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), 18 km from the middle of the area, began a volume at 08:19 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

Pittsburgh, PA (KPIT), launched 00:00Z, 8.3 hours before the alert went out and 169 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.

378 
WGUS51 KCLE 190819
FFWCLE
OHC035-191300-
/O.NEW.KCLE.FF.W.0025.110719T0819Z-110719T1300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

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

* UNTIL 900 AM EDT.

* AT 411 AM EDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED FLOODING FROM
  EARLIER TORRENTIAL STORMS. DOPPLER WEATHER RADAR ESTIMATES TWO TO 
  THREE INCHES OF RAINFALL FELL OVER THE WARNED AREA EARLIER THIS MORNING. 
  THE FLOODING WAS MAINLY OCCURRING OVER PARMA...HOWEVER SURROUNDING 
  COMMUNITIES INCLUDING CLEVELAND COULD STILL EXPERIENCE FLOODING AS 
  RUNOFF CONTINUES TO RUN THROUGH LOCAL DRAINAGE SYSTEMS AND STREAMS.

* LOCATIONS IMPACTED INCLUDE...
  CLEVELAND...
  PARMA...
  NORTH ROYALTON...

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 4146 8162 4135 8158 4131 8159 4130 8157
      4128 8158 4128 8181 4149 8174 4151 8170

$$
21

2 follow-up statements

230 
WGUS71 KCLE 190923
FFSCLE

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

OHC035-191300-
/O.CON.KCLE.FF.W.0025.000000T0000Z-110719T1300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CUYAHOGA OH-
523 AM EDT TUE JUL 19 2011

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR CENTRAL CUYAHOGA COUNTY
UNTIL 900 AM EDT...

LAW ENFORCEMENT HAS REPORTED SEVERAL ROAD CLOSURES ACROSS CUYAHOGA COUNTY 
MAINLY IN THE PARMA AND CLEVELAND AREAS. STRONG THUNDERSTORMS OVERNIGHT
BROUGHT TWO TO FOUR INCHES OF RAINFALL TO THE COUNTY. THIS RESULTED IN 
RAPID RUNOFF AND OVERWHELMED DRAINAGE SYSTEMS. SEVERAL LOW LYING AREAS ACROSS
THE COUNTY ARE FLOODED...AND WILL CONTINUE TO BE A HAZARD TO MOTORISTS
THROUGH THE MORNING HOURS. SEVERAL STREAMS AND CREEKS HAVE COME OUT OF THEIR
BANKS. NEVER ENTER FLOOD WATERS. MORNING COMMUTERS THAT TRAVEL ALONG 
FLOOD PRONE ROADS SHOULD SEEK ALTERNATE ROUTES UNTIL THE FLOOD WATERS
HAVE RECEDED COMPLETELY. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 4146 8162 4135 8158 4131 8159 4130 8157
      4128 8158 4128 8181 4149 8174 4151 8170

$$

JAMISON

750 
WGUS71 KCLE 191128
FFSCLE

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

OHC035-191300-
/O.CON.KCLE.FF.W.0025.000000T0000Z-110719T1300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CUYAHOGA OH-
728 AM EDT TUE JUL 19 2011

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR CENTRAL CUYAHOGA COUNTY
UNTIL 900 AM EDT...

AT 721 AM EDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED ONGOING 
FLOODING ACROSS THE WARNED AREA. TORRENTIAL STORMS ROLLED IN OFF THE 
LAKES OVERNIGHT...BRINGING TWO TO FIVE INCHES OF RAIN TO CUYAHOGA 
COUNTY. THE RAIN FELL MOSTLY WITHIN A TWO HOUR TIMEFRAME...RESULTING 
IN FLASH FLOODING. SEVERAL ROADS REMAIN CLOSED THOUGH FLOOD WATERS 
ARE EXPECTED TO CONTINUE TO GRADUALLY RECEDE THROUGH THE MORNING 
HOURS. SOME LOCATIONS THAT ARE EXPERIENCING FLOODING 
INCLUDE...CLEVELAND...NORTH ROYALTON AND PARMA.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 4146 8162 4135 8158 4131 8159 4130 8157
      4128 8158 4128 8181 4149 8174 4151 8170

$$

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, 3:26 AM EDT	Flash Flood Warning	CLE	Cuyahoga, Lorain	6 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.