Alert archive / Ohio / Flash Flood Warnings in 2009

Flash Flood Warning 9, NWS Cleveland, OH

June 30, 2009Cuyahoga County, Geauga County, Lake County, Ohio

NWS Cleveland, OH issued this flash flood warning at Jun 30, 2009, 8:51 AM EDT for Cuyahoga County, Geauga County, Lake County, Ohio. It was in force for 4 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: Jun 30, 2009, 8:51 AM EDT (12:51 UTC)
Expired: Jun 30, 2009, 1:00 PM EDT
In force: 4 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), 44 km from the middle of the area, began a volume at 12:55 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.

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 0.9 hours before the alert went out and 171 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: 119 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 645 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 30 m²/s²
0-3 km storm-relative helicity: 70 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

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

000 
WGUS51 KCLE 301251
FFWCLE
OHC035-055-085-301700-
/O.NEW.KCLE.FF.W.0009.090630T1251Z-090630T1700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
851 AM EDT TUE JUN 30 2009

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

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

* UNTIL 100 PM EDT

* AT 845 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED A 
  LINE OF EAST-WEST MOVING THUNDERSTORMS STALLED OVER THE EASTERN 
  SUBURBS OF CLEVELAND.  RAINFALL RATES OF UP TO TWO INCHES PER HOUR 
  ARE POSSIBLE WITH THESE STORMS.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO   
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... 
  CHARDON...PAINESVILLE...EASTLAKE...EUCLID...MAYFIELD...MENTOR...
  WILLOUGHBY...BRATENAHL...CLEVELAND HEIGHTS...EAST CLEVELAND... 
  HIGHLAND HEIGHTS...WILLOUGHBY HILLS AND WILLOWICK.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE QUICKLY FLOODING OF
SMALL CREEKS AND STREAMS. IN URBAN AREAS...FLOODING WILL RAPIDLY
OCCUR ALONG POORLY DRAINED AND LOW LYING HIGHWAYS...STREETS...AND
UNDERPASSES. IF YOU ENCOUNTER A FLOODED ROADWAY... TURN AROUND DONT
DROWN

TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN
CLEVELAND.

&&

LAT...LON 4149 8101 4150 8172 4152 8171 4157 8161
      4163 8153 4164 8149 4167 8146 4173 8136
      4174 8101

$$

ASTIFAN

2 follow-up statements

000 
WGUS71 KCLE 301413
FFSCLE

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
1013 AM EDT TUE JUN 30 2009

OHC035-055-085-301700-
/O.CON.KCLE.FF.W.0009.000000T0000Z-090630T1700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CUYAHOGA OH-GEAUGA OH-LAKE OH-
1013 AM EDT TUE JUN 30 2009

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR LAKE...NORTHERN 
GEAUGA AND NORTHEASTERN CUYAHOGA COUNTIES UNTIL 100 PM EDT...

AT 1000 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THUNDERSTORMS WITH VERY HEAVY RAINFALL MOVING ONSHORE BETWEEN 
BRATENAHL AND EUCLID.  DOPPLER RADAR ESTIMATES ONE TO TWO INCHES OF 
RAIN IN ONE HOUR IS POSSIBLE WITH THIS LINE OF STORMS AS IT MOVES 
INLAND.  

RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO 
OCCUR. SOME CREEKS AND STREAMS WHICH MAY EXPERIENCE FLOODING INCLUDE 
EUCLID CREEK...AND DOAN BROOK ALONG MARTIN LUTHER KING BOULEVARD. 

LOCATIONS IMPACTED INCLUDE EASTERN PORTIONS OF THE CITY OF 
CLEVELAND...EAST CLEVELAND...EUCLID...WICKLIFFE...RICHMOND 
HEIGHTS...AND WILLOUGHBY HILLS.

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...DONT DROWN

REPORT FLOODING TO THE NEAREST LAW ENFORCEMENT AGENCY SO THAT THEY
MAY TAKE APPROPRIATE ACTION TO CLOSE FLOODED ROADWAYS. THEY WILL
RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN CLEVELAND.

&&

LAT...LON 4149 8101 4150 8172 4152 8171 4157 8161
      4163 8153 4164 8149 4167 8146 4173 8136
      4174 8101

$$

ASTIFAN

000 
WGUS71 KCLE 301654
FFSCLE

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
1254 PM EDT TUE JUN 30 2009

OHC035-055-085-301706-
/O.EXP.KCLE.FF.W.0009.000000T0000Z-090630T1700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CUYAHOGA OH-GEAUGA OH-LAKE OH-
1254 PM EDT TUE JUN 30 2009

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR LAKE...NORTHERN 
GEAUGA AND NORTHEASTERN CUYAHOGA COUNTIES HAS BEEN ALLOWED TO 
EXPIRE...

EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS
AND CREEKS IN THE WARNED AREA HAVE RECEDED ENDING THE FLOOD THREAT. 
IF FLOODING HAS BEEN OBSERVED...PLEASE REPORT IT TO YOUR LOCAL LAW 
ENFORCEMENT AGENCY.

RAINFALL OF TWO TO FOUR INCHES WAS MEASURED THIS MORNING IN PORTIONS 
OF THE WARNING AREA...WITH 2.0 INCHES RECORDED IN MAYFIELD...2.3 
INCHES IN CHARDON... AND 3.7 INCHES JUST SOUTH OF CHESTERLAND.

LAT...LON 4149 8101 4150 8172 4152 8171 4157 8161
      4163 8153 4164 8149 4167 8146 4173 8136
      4174 8101

$$

ASTIFAN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 30, 5:19 AM EDT	Flood Watch	CLE	Ashtabula, Cuyahoga, Geauga, Lake	30 hr
Jun 30, 8:01 AM EDT	Special Marine Warning	CLE		44 min
Jun 30, 6:49 PM EDT	Special Marine Warning	CLE		116 min

Nearby

Flash Flood Warnings in Ohio, 2009 Every flash flood warning in 2009

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.