Alert archive / Ohio / Flash Flood Warnings in 2011

Flash Flood Warning 1, NWS Cleveland, OH

February 28, 20118 counties in Ohio

NWS Cleveland, OH issued this flash flood warning at Feb 28, 2011, 4:12 AM EST for 8 counties in Ohio. It was in force for 6 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
Feb 28, 2011, 4:12 AM EST (09:12 UTC)
Expired
Feb 28, 2011, 10:00 AM EST
In force
6 hr
Issued by
NWS Cleveland, OH
Area
Storm-based polygon
Flood severity
None

Counties Ashland County, OH, Crawford County, OH, Holmes County, OH, Knox County, OH, Marion County, OH, Morrow County, OH, Richland County, OH, Wayne County, OH

The radar

The Cleveland radar (KCLE), 113 km from the middle of the area, began a volume at 09:14 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

Cncnati-Daytn, OH (KILN), launched 00:00Z, 9.2 hours before the alert went out and 162 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, Cncnati-Daytn, OH at 00:00Z on 2011-02-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 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, Cncnati-Daytn, OH at 00:00Z on 2011-02-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 325 square meters per square second.1939587897117Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
539 m above ground
0-6 km bulk shear
72 kt
0-1 km storm-relative helicity
325 m²/s²
0-3 km storm-relative helicity
380 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

600 
WGUS51 KCLE 280912
FFWCLE
OHC005-033-075-083-101-117-139-169-281500-
/O.NEW.KCLE.FF.W.0001.110228T0912Z-110228T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
412 AM EST MON FEB 28 2011

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  MARION COUNTY IN NORTH CENTRAL OHIO
  MORROW COUNTY IN NORTH CENTRAL OHIO
  NORTHWESTERN HOLMES COUNTY IN NORTHEAST OHIO
  NORTHWESTERN KNOX COUNTY IN NORTH CENTRAL OHIO
  SOUTHEASTERN CRAWFORD COUNTY IN NORTH CENTRAL OHIO
  SOUTHERN ASHLAND COUNTY IN NORTH CENTRAL OHIO
  SOUTHERN RICHLAND COUNTY IN NORTH CENTRAL OHIO
  WAYNE COUNTY IN NORTHEAST OHIO

* UNTIL 1000 AM EST

* AT 404 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  THUNDERSTORMS MOVING IN A LINE WITH VERY HEAVY RAINFALL ACROSS THE 
  WARNED AREA CAPABLE OF PRODUCING 1 TO 2 INCHES OF RAIN IN AN HOUR.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL LIKELY CAUSE FLASH        
  FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING    
  INCLUDE...ASHLAND...MANSFIELD...MARION...MOUNT GILEAD...RITTMAN... 
  SHREVE...WOOSTER...BELLVILLE...CARDINGTON...CHESTERVILLE...
  CRESTLINE... CRESTON...DALTON...DOYLESTOWN...FREDERICKTOWN...      
  GALION...HAYESVILLE...LA RUE...LEXINGTON...LOUDONVILLE...
  MOUNT EATON...NASHVILLE...ONTARIO...ORRVILLE...PROSPECT...         
  SPARTA...WALDO AND WEST SALEM.


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 4035 8292 4041 8293 4044 8324 4050 8326
      4050 8343 4059 8342 4095 8212 4099 8213
      4098 8164 4067 8165 4067 8188 4040 8264
      4034 8264

$$

TK
1 follow-up statement
629 
WGUS71 KCLE 281220
FFSCLE

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
720 AM EST MON FEB 28 2011

OHC005-033-075-083-101-117-139-169-281500-
/O.CON.KCLE.FF.W.0001.000000T0000Z-110228T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ASHLAND OH-CRAWFORD OH-RICHLAND OH-WAYNE OH-KNOX OH-HOLMES OH-
MARION OH-MORROW OH-
720 AM EST MON FEB 28 2011

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR MORROW...MARION...
NORTHWESTERN KNOX...SOUTHERN RICHLAND...SOUTHEASTERN CRAWFORD AND
SOUTHERN ASHLAND COUNTIES IN NORTH CENTRAL OHIO...AND NORTHWESTERN
HOLMES AND WAYNE COUNTIES IN NORTHEAST OHIO UNTIL 1000 AM EST...

AT 713 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THAT THE SHOWERS AND THUNDERSTORMS THAT AFFECTED THE WARNING AREA 
EARLIER IN THE NIGHT HAD MOVED OFF TO THE EAST.

TWO TO AS MUCH AS THREE INCHES OF RAIN FELL ON THE WARNING AREA 
OVERNIGHT.  THIS RAINFALL COMBINED WITH RUNOFF FROM SNOWMELT HAS LED 
TO WIDESPREAD FLOODING ACROSS THE WARNING AREA.  FLOWING WATER HAS 
BEEN REPORTED ON SEVERAL ROADS AND MANY OTHER ROADS HAVE BEEN CLOSED 
OR WILL NEED TO BE CLOSED.  IN ADDITION...GROUND FOG CONTINUES TO 
LIMIT VISIBILITY MAKING DRIVING THIS MORNING VERY TREACHEROUS. 

WATER IN BASEMENTS HAS BEEN REPORTED IN MANY AREAS.  

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...ASHLAND... 
MANSFIELD...MARION...MOUNT GILEAD...RITTMAN...SHREVE... 
WOOSTER...BELLVILLE...CARDINGTON...CHESTERVILLE...CRESTON... 
DALTON...DOYLESTOWN...FREDERICKTOWN...GALION...HAYESVILLE...LA 
RUE...LEXINGTON...LOUDONVILLE...MOUNT EATON...NASHVILLE... 
ONTARIO...ORRVILLE...PROSPECT...SPARTA...WALDO AND WEST SALEM.

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 4035 8292 4041 8293 4044 8324 4050 8326
      4050 8343 4059 8342 4095 8212 4099 8213
      4098 8164 4067 8165 4067 8188 4040 8264
      4034 8264

$$

KUBINA

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 28, 12:43 AM ESTAreal Flood WarningCLECrawford, Hancock, Lucas, Marion, Morrow, Ottawa and 4 more12 hr
Feb 28, 12:51 AM ESTAreal Flood WarningCLEAshland, Cuyahoga, Erie, Huron, Lorain, Medina and 3 more12 hr
Feb 28, 1:54 AM ESTAreal Flood WarningCLEAshtabula, Geauga, Lake, Portage, Trumbull12 hr
Feb 28, 3:30 AM ESTTornado WarningCLEMarion45 min
Feb 28, 4:31 AM ESTRiver Flood WarningCLEMarion3 days
Feb 28, 4:41 AM ESTRiver Flood WarningCLEHancock35 hr
Feb 28, 4:45 AM ESTRiver Flood WarningCLEHancock65 hr
Feb 28, 4:48 AM ESTRiver Flood WarningCLELorain60 hr
Feb 28, 5:08 AM ESTFlash Flood WarningCLEHolmes, Knox, Mahoning, Stark6 hr
Feb 28, 5:20 AM ESTRiver Flood WarningCLECuyahoga35 hr
Feb 28, 5:37 AM ESTRiver Flood WarningCLEStark22 hr
Feb 28, 5:47 AM ESTFlash Flood WarningCLEKnox5 hr
Feb 28, 5:47 AM ESTRiver Flood WarningCLELake21 hr
Feb 28, 5:47 AM ESTRiver Flood WarningCLELake3 days
Feb 28, 5:55 AM ESTRiver Flood WarningCLECuyahoga, Geauga, Portage, Summit41 hr
Feb 28, 6:12 AM ESTRiver Flood WarningCLEErie, Huron34 hr
Feb 28, 6:14 AM ESTRiver Flood WarningCLEMarion13 days
Feb 28, 6:25 AM ESTRiver Flood WarningCLEHolmes, Wayne17 days
Feb 28, 6:31 AM ESTRiver Flood WarningCLEMahoning59 hr
Feb 28, 9:20 AM ESTRiver Flood WarningCLESandusky, Seneca6 days
Feb 28, 9:20 AM ESTRiver Flood WarningCLESandusky4 days
Feb 28, 9:22 AM ESTRiver Flood WarningCLELucas, Wood7 days
Feb 28, 9:30 AM ESTRiver Flood WarningCLEOttawa, Sandusky, Wood3 days
Feb 28, 9:32 AM ESTRiver Flood WarningCLELucas, Wood9 days
Feb 28, 10:12 AM ESTFlash Flood WarningCLECuyahoga, Lake58 min
Feb 28, 10:18 AM ESTAreal Flood WarningCLEAshland, Ashtabula, Crawford, Erie, Geauga, Hancock and 20 more50 hr
Feb 28, 11:16 AM ESTAreal Flood WarningCLECuyahoga, Lake33 hr
Feb 28, 11:56 AM ESTRiver Flood WarningCLETrumbull42 hr
Feb 28, 11:56 AM ESTRiver Flood WarningCLETrumbull42 hr
Feb 28, 1:01 PM ESTRiver Flood WarningCLEErie, Lorain2 hr

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.