Alert archive / Ohio / Flash Flood Warnings in 2007

Flash Flood Warning 9, NWS Cleveland, OH

August 7, 2007Lorain County, Ohio

NWS Cleveland, OH issued this flash flood warning at Aug 7, 2007, 9:14 AM EDT for Lorain 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: Aug 7, 2007, 9:14 AM EDT (13:14 UTC)
Expired: Aug 7, 2007, 1:15 PM EDT
In force: 4 hr
Issued by: NWS Cleveland, OH
Area: Counties, with a storm outline in the text
Flood severity: None

County Lorain County, OH

The radar

The Cleveland radar (KCLE), 27 km from the middle of the area, began a volume at 13:18 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

Detroit, MI (KDTX), launched 12:00Z, 1.2 hours before the alert went out and 181 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: 741 J/kg
Mixed-layer CIN: -31 J/kg
Mixed-layer LCL: 857 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 57 m²/s²
0-3 km storm-relative helicity: 97 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.8

Open this sounding in Storm Lab

The text

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

000 
WGUS51 KCLE 071315
FFWCLE
OHC093-071715-
/X.NEW.KCLE.FF.W.0009.070807T1314Z-070807T1715Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
914 AM EDT TUE AUG 7 2007

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  LORAIN COUNTY IN NORTH CENTRAL OHIO

* UNTIL 115 PM EDT

* AT 908 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
TWO TO FOUR INCHES OF RAIN HAVE FALLEN IN NORTHERN LORAIN COUNTY 
DURING THE PAST TWO HOURS.  AN ADDITIONAL INCH TO TWO INCHES OF RAIN 
IS POSSIBLE THIS MORNING.  

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO 
AVON...AMHERST...VERMILION...LORAIN AND AVON LAKE.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

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. MOVE TO HIGHER GROUND.  TURN AROUND... DONT DROWN

LAT...LON 4144 8235 4125 8228 4129 8195 4152 8197

$$

ASTIFAN

1 follow-up statement

000 
WGUS71 KCLE 071538
FFSCLE

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
1133 AM EDT TUE AUG 7 2007

OHC093-071715-
/X.CON.KCLE.FF.W.0009.000000T0000Z-070807T1715Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LORAIN OH-
1133 AM EDT TUE AUG 7 2007

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 115 PM EDT FOR
NORTHERN LORAIN COUNTY...

AT 1127 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 3 
TO 4 INCHES OF RAIN FELL THIS MORNING IN PORTIONS OF NORTHERN LORAIN 
COUNTY.  ACCORDING TO MEDIA REPORTS...SEVERAL ROADS...INCLUDING 
RAMPS TO INTERSTATE 90...ARE FLOODED.  USE CAUTION IF TRAVELLING IN 
NORTHERN LORAIN COUNTY THIS AFTERNOON.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SHEFFIELD... 
SHEFFIELD LAKE...VERMILION...LORAIN...AVON...AND AVON LAKE.

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

LAT...LON 4144 8235 4125 8228 4129 8195 4152 8197

$$

ASTIFAN

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 7, 4:17 AM EDT	Heat Advisory	CLE	Hancock, Marion, Morrow, Wood, Wyandot	6 hr
Aug 7, 4:23 AM EDT	Special Marine Warning	CLE		2 hr
Aug 7, 6:24 AM EDT	Special Marine Warning	CLE		2 hr
Aug 7, 7:03 AM EDT	Severe Thunderstorm Warning	CLE	Erie	27 min
Aug 7, 8:24 AM EDT	Special Marine Warning	CLE		2 hr
Aug 7, 8:45 AM EDT	Flash Flood Warning	CLE	Cuyahoga	4 hr
Aug 7, 8:57 AM EDT	Areal Flood Advisory	CLE	Lorain	4 hr
Aug 7, 9:06 AM EDT	Severe Thunderstorm Warning	CLE	Cuyahoga	54 min
Aug 7, 9:09 AM EDT	Special Marine Warning	CLE		2 hr
Aug 7, 9:55 AM EDT	Areal Flood Advisory	CLE	Lake	4 hr
Aug 7, 10:15 AM EDT	Areal Flood Advisory	CLE	Geauga, Portage, Summit	4 hr
Aug 7, 10:28 AM EDT	Severe Thunderstorm Warning	CLE	Ashtabula, Trumbull	62 min
Aug 7, 12:33 PM EDT	Areal Flood Warning	CLE	Cuyahoga	4 hr
Aug 7, 1:16 PM EDT	Areal Flood Warning	CLE	Lorain	4 hr
Aug 7, 6:25 PM EDT	Severe Thunderstorm Warning	CLE	Wood	18 min
Aug 7, 7:18 PM EDT	Tornado Warning	CLE	Wood	27 min
Aug 7, 7:26 PM EDT	Severe Thunderstorm Warning	CLE	Lorain, Medina	64 min

Nearby

Flash Flood Warnings in Ohio, 2007 Every flash flood warning in 2007

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.