Alert archive / Ohio / Flash Flood Warnings in 2021

Flash Flood Warning 24, NWS Cleveland, OH

September 14, 2021Lucas County, Ottawa County, Wood County, Ohio

NWS Cleveland, OH issued this flash flood warning at Sep 14, 2021, 10:38 PM EDT for Lucas County, Ottawa County, Wood 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: Sep 14, 2021, 10:38 PM EDT (02:38 UTC)
Expired: Sep 15, 2021, 3:45 AM EDT
In force: 5 hr
Issued by: NWS Cleveland, OH
Area: Storm-based polygon
Flood severity: None

Counties Lucas County, OH, Ottawa County, OH, Wood County, OH

The radar

The Detroit radar (KDTX), 122 km from the middle of the area, began a volume at 02:41 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 00:00Z, 2.6 hours before the alert went out and 124 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: 547 J/kg
Mixed-layer CIN: -69 J/kg
Mixed-layer LCL: 950 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 130 m²/s²
0-3 km storm-relative helicity: 178 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 2.5

Open this sounding in Storm Lab

The text

As transmitted.

462 
WGUS51 KCLE 150238
FFWCLE
OHC095-123-173-150745-
/O.NEW.KCLE.FF.W.0024.210915T0238Z-210915T0745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Cleveland OH
1038 PM EDT Tue Sep 14 2021

The National Weather Service in Cleveland has issued a

* Flash Flood Warning for...
  Lucas County in northwestern Ohio...
  Ottawa County in northwestern Ohio...
  Northern Wood County in northwestern Ohio...

* Until 345 AM EDT.

* At 1038 PM EDT, local law enforcement reported thunderstorms 
  producing heavy rain across the warned area. Between 1 and 3 
  inches of rain have fallen. Additional rainfall amounts of 0.5 to 
  1 inch are possible in the warned area. Flash flooding is ongoing 
  or expected to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Law enforcement reported.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Toledo, Perrysburg, Oregon, Sylvania, Rossford, Waterville, 
  Northwood, Whitehouse, Genoa, Holland, Maumee, Ottawa Hills, 
  Walbridge, Millbury, Haskins, Luckey, Clay Center, Berkey, Harbor 
  View and Stony Ridge.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Be aware of your surroundings and do not drive on flooded roads.

Please report observed flooding to local emergency services or law 
enforcement and request they pass this information to the National 
Weather Service when you can do so safely.

&&

LAT...LON 4142 8388 4172 8388 4172 8343 4172 8340
      4174 8339 4172 8338 4173 8336 4162 8314
      4150 8336 4150 8341 4147 8342

FLASH FLOOD...OBSERVED

$$

Griffin

2 follow-up statements

859 
WGUS71 KCLE 150530
FFSCLE

Flash Flood Statement
National Weather Service Cleveland OH
130 AM EDT Wed Sep 15 2021

OHC095-123-173-150745-
/O.CON.KCLE.FF.W.0024.000000T0000Z-210915T0745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lucas OH-Ottawa OH-Wood OH-
130 AM EDT Wed Sep 15 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 345 AM EDT EARLY THIS 
MORNING FOR LUCAS, OTTAWA AND NORTHERN WOOD COUNTIES...

At 130 AM EDT, local law enforcement reported thunderstorms 
producing heavy rain across the warned area. Between 1 and 3 inches 
of rain have fallen. Flash flooding is ongoing or expected to begin 
shortly.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Law enforcement reported.

IMPACT...Flash flooding of small creeks and streams, urban areas,
         highways, streets and underpasses as well as other poor
         drainage and low-lying areas.

Some locations that will experience flash flooding include...
  Toledo, Perrysburg, Oregon, Sylvania, Rossford, Waterville, 
  Northwood, Whitehouse, Genoa, Holland, Maumee, Ottawa Hills, 
  Walbridge, Millbury, Haskins, Luckey, Clay Center, Berkey, Harbor 
  View and Stony Ridge.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Be aware of your surroundings and do not drive on flooded roads.

Please report observed flooding to local emergency services or law 
enforcement and request they pass this information to the National 
Weather Service when you can do so safely.

&&

LAT...LON 4142 8388 4172 8388 4172 8343 4172 8340
      4174 8339 4172 8338 4173 8336 4162 8314
      4150 8336 4150 8341 4147 8342

FLASH FLOOD...OBSERVED

$$

Lombardy

021 
WGUS71 KCLE 150737
FFSCLE

Flash Flood Statement
National Weather Service Cleveland OH
337 AM EDT Wed Sep 15 2021

OHC095-123-173-150747-
/O.EXP.KCLE.FF.W.0024.000000T0000Z-210915T0745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lucas OH-Ottawa OH-Wood OH-
337 AM EDT Wed Sep 15 2021

...FLASH FLOOD WARNING WILL EXPIRE AT 345 AM EDT EARLY THIS MORNING 
FOR LUCAS, OTTAWA AND NORTHERN WOOD COUNTIES...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat. Please continue to heed remaining road closures.

LAT...LON 4142 8388 4172 8388 4172 8343 4172 8340
      4174 8339 4172 8338 4173 8336 4162 8314
      4150 8336 4150 8341 4147 8342

$$

Campbell

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 14, 8:28 PM EDT	Special Weather Statement	CLE	Lucas	62 min
Sep 14, 8:44 PM EDT	Severe Thunderstorm Warning	CLE	Lucas, Ottawa, Wood	61 min
Sep 14, 8:45 PM EDT	Special Marine Warning	CLE		2 hr
Sep 14, 9:30 PM EDT	Areal Flood Advisory	CLE	Lucas, Ottawa, Wood	68 min
Sep 14, 9:38 PM EDT	Severe Thunderstorm Warning	CLE	Erie, Lucas, Ottawa, Sandusky, Wood	67 min
Sep 14, 9:48 PM EDT	Special Marine Warning	CLE		87 min
Sep 14, 10:45 PM EDT	Special Weather Statement	CLE	Erie, Ottawa, Sandusky	60 min
Sep 14, 10:50 PM EDT	Special Marine Warning	CLE		85 min
Sep 14, 10:59 PM EDT	Areal Flood Advisory	CLE	Erie, Ottawa, Sandusky	5 hr
Sep 14, 11:11 PM EDT	Special Marine Warning	CLE		94 min
Sep 14, 11:58 PM EDT	Special Marine Warning	CLE		92 min
Sep 15, 12:16 AM EDT	Special Weather Statement	CLE	Ashtabula, Geauga, Trumbull	59 min
Sep 15, 1:04 AM EDT	Severe Thunderstorm Warning	CLE	Cuyahoga, Geauga, Lake, Lorain, Medina, Portage and 1 more	71 min
Sep 15, 1:24 AM EDT	Areal Flood Advisory	CLE	Cuyahoga	3 hr

Nearby

Flash Flood Warnings in Ohio, 2021 Every flash flood warning in 2021

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.