Alert archive / Ohio / Flash Flood Warnings in 2011

Flash Flood Warning 7, NWS Cleveland, OH

May 13, 2011Cuyahoga County, Geauga County, Lake County, Ohio

NWS Cleveland, OH issued this flash flood warning at May 13, 2011, 12:52 PM EDT for Cuyahoga County, Geauga County, Lake County, Ohio. It was in force for 5 hr. 1 report 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
May 13, 2011, 12:52 PM EDT (16:52 UTC)
Expired
May 13, 2011, 6:00 PM EDT
In force
5 hr
Issued by
NWS Cleveland, OH
Area
Storm-based polygon
Flood severity
None

Counties Cuyahoga County, OH, Geauga County, OH, Lake County, OH

The radar

The Cleveland radar (KCLE), 56 km from the middle of the area, began a volume at 16:55 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
May 13, 2:25 PM EDTFLASH FLOODMadison, OHRIVER ROAD FLOODED. MADISON ROAD NORTH OF 322 UNDER A FOOT OF WATER. HIGH WATER ALSO REPORTED ON FORD ROAD.

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, 4.9 hours before the alert went out and 172 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 2011-05-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 205 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 2011-05-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 68 square meters per square second.193958Sfc1 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
205 J/kg
Mixed-layer CIN
-131 J/kg
Mixed-layer LCL
1018 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
68 m²/s²
0-3 km storm-relative helicity
67 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.

893 
WGUS51 KCLE 131652
FFWCLE
OHC035-055-085-132200-
/O.NEW.KCLE.FF.W.0007.110513T1652Z-110513T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
1252 PM EDT FRI MAY 13 2011

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  GEAUGA COUNTY IN NORTHEAST OHIO
  LAKE COUNTY IN NORTHEAST OHIO
  NORTHEASTERN CUYAHOGA COUNTY IN NORTHEAST OHIO

* UNTIL 600 PM EDT

* AT 1246 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE
  WARNED AREA. RAINFALL RATES OF GREATER THAN ONE INCH ARE BEING OBSERVED 
  WITH THESE STORMS.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  CHARDON...PAINESVILLE...BURTON...CHESTERLAND...CLEVELAND HEIGHTS...
  EASTLAKE...EUCLID...MADISON...MENTOR...PERRY...SOLON...SOUTH
  RUSSELL AND WILLOUGHBY.

ADDITIONAL STORMS ARE EXPECTED IN THIS REGION ALONG THE LAKE BREEZE. RAINFALL
AMOUNTS OF ONE TO TWO INCHES ARE POSSIBLE WITH THESE STORMS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

VERY HEAVY RAINFALL IS POSSIBLE IN THE WARNED AREA. EXCESSIVE RUNOFF
WILL CAUSE FLOODING OF SMALL CREEKS...STREAMS...AND DRAINAGE DITCHES
ACROSS THE WARNING AREA. IN URBAN AREAS...FLOODING IS LIKELY ALONG
POORLY DRAINED AND LOW LYING HIGHWAYS...STREETS...AND UNDERPASSES. BE
ALERT FOR FLOODED ROADS. TURN AROUND...DON'T DROWN!

&&

LAT...LON 4183 8106 4174 8101 4141 8112 4136 8141
      4136 8164 4156 8163 4162 8154 4161 8151
      4174 8136 4174 8130 4177 8126 4176 8124
      4181 8116 4182 8109 4184 8108

$$

SJ
2 follow-up statements
090 
WGUS71 KCLE 131737
FFSCLE

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
137 PM EDT FRI MAY 13 2011

OHC035-055-085-132200-
/O.CON.KCLE.FF.W.0007.000000T0000Z-110513T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CUYAHOGA OH-GEAUGA OH-LAKE OH-
137 PM EDT FRI MAY 13 2011

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR LAKE...GEAUGA AND
NORTHEASTERN CUYAHOGA COUNTIES UNTIL 600 PM EDT...

AT 132 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA.
DOPPLER RADAR ESTIMATED OVER TWO INCHES OF RAINFALL HAD FALLEN OVER PORTIONS 
OF LAKE COUNTY. ADDITIONALLY...THE AUTOMATED RAIN GAGES IN LAKE 
COUNTY AT CONCORD REPORTED THREE QUARTERS OF AN INCH OF RAIN WITHIN 
15 MINUTES. THESE TORRENTIAL RAINFALL RATES WILL PRODUCE RAPID 
RUNOFF...WITH DANGEROUS FLASH FLOODING CONDITIONS LIKELY. SOME 
LOCATIONS THAT WILL EXPERIENCE FLOODING 
INCLUDE...CHARDON...PAINESVILLE...BURTON...CHESTERLAND...CLEVELAND 
HEIGHTS...EASTLAKE...EUCLID...MADISON...MENTOR...PERRY...SOLON...AND 
WILLOUGHBY.


LAT...LON 4183 8106 4174 8101 4141 8112 4136 8141
      4136 8164 4156 8163 4162 8154 4161 8151
      4174 8136 4174 8130 4177 8126 4176 8124
      4181 8116 4182 8109 4184 8108

$$

SJ
939 
WGUS71 KCLE 132016
FFSCLE

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
416 PM EDT FRI MAY 13 2011

OHC035-055-085-132200-
/O.CON.KCLE.FF.W.0007.000000T0000Z-110513T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CUYAHOGA OH-GEAUGA OH-LAKE OH-
416 PM EDT FRI MAY 13 2011

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR LAKE...GEAUGA AND
NORTHEASTERN CUYAHOGA COUNTIES UNTIL 600 PM EDT...

AT 412 PM EDT...THE TORRENTIAL STORMS HAVE DISSIPATED ACROSS THE 
WARNED AREA. HOWEVER...RUNOFF FROM EARLIER STORMS WILL KEEP AN ELEVATED
FLOOD RISK ACROSS THE AREA. AREA OF MOST CONCERN IS ALONG SMALL STREAMS
AND CREEKS NEAR MADISON...PAINESVILLE...AND MENTOR. RAINFALL 
ESTIMATES FROM EARLIER STORMS RANGE FROM 1 TO 3 INCHES...MOST OF 
WHICH FELL WITHIN ONE HOUR. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATER IS 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 4183 8106 4174 8101 4141 8112 4136 8141
      4136 8164 4156 8163 4162 8154 4161 8151
      4174 8136 4174 8130 4177 8126 4176 8124
      4181 8116 4182 8109 4184 8108

$$

The office that day

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

IssuedProductOfficeCountiesLasted
May 12, 9:03 PM EDTSevere Thunderstorm WarningCLEMarion42 min
May 13, 9:27 AM EDTFlood WatchCLEAshland, Ashtabula, Cuyahoga, Erie, Geauga, Holmes and 12 more14 hr
May 13, 2:16 PM EDTSevere Thunderstorm WarningCLEMahoning44 min
May 13, 2:23 PM EDTAreal Flood AdvisoryCLEAshtabula, Geauga, Lake, Mahoning, Portage, Stark and 1 more5 hr
May 13, 2:34 PM EDTSevere Thunderstorm WarningCLEAshtabula, Geauga, Trumbull41 min
May 13, 2:56 PM EDTFlash Flood WarningCLEAshtabula, Geauga, Trumbull3 hr
May 13, 3:38 PM EDTAreal Flood AdvisoryCLEAshland, Richland112 min
May 13, 4:13 PM EDTSevere Thunderstorm WarningCLEPortage62 min
May 13, 4:40 PM EDTAreal Flood WarningCLEMedina, Portage, Stark, Summit, Wayne4 hr
May 13, 4:46 PM EDTSevere Thunderstorm WarningCLEMedina, Summit, Wayne28 min
May 13, 5:58 PM EDTAreal Flood WarningCLEAshtabula, Geauga, Trumbull5 hr
May 13, 6:06 PM EDTRiver Flood WarningCLELake5 hr
May 13, 7:26 PM EDTRiver Flood WarningCLEStark4 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.