Alert archive / Ohio / Flash Flood Warnings in 2021

Flash Flood Warning 25, NWS Cleveland, OH

October 9, 20214 counties in Ohio

NWS Cleveland, OH issued this flash flood warning at Oct 9, 2021, 4:19 AM EDT for 4 counties in Ohio. It was in force for 4 hr. 22 reports 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: Oct 9, 2021, 4:19 AM EDT (08:19 UTC)
Expired: Oct 9, 2021, 8:45 AM EDT
In force: 4 hr
Issued by: NWS Cleveland, OH
Area: Storm-based polygon
Flood severity: None

Counties Ashtabula County, OH, Geauga County, OH, Portage County, OH, Trumbull County, OH

The radar

The Cleveland radar (KCLE), 72 km from the middle of the area, began a volume at 08:21 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

Time	Report	Where	Remark
Oct 9, 4:47 AM EDT	FLASH FLOOD	5 Wsw West Farmington, OH	LAW ENFORCEMENT REPORTS FLOODED ROADS NEAR PARKMAN NELSON ROAD AND HIGHWAY 422 NEAR PARKMAN TOWNSHIP.
Oct 9, 5:00 AM EDT	HEAVY RAIN 4	Garrettsville, OH	A PERSONAL WEATHER STATION REPORTED 4.0 INCHES OF RAINFALL IN 3 HOURS FROM 2 AM TO 5 AM EDT AND IT IS STILL RAINING.
Oct 9, 5:15 AM EDT	FLOOD	1 Ne Middlefield, OH	FLOODING IN FIRST FLOOR OF HOME WITH WATER MARK UP 1.5 FEET NOTED ON THE OUTSIDE OF HOME FROM RISING WATER ON HILLCREST AVE. 3.92 INCHES OF RAIN MEASURED.
Oct 9, 5:15 AM EDT	HEAVY RAIN 4.25	1 Ene Middlefield, OH	A PERSONAL WEATHER STATION NEAR MIDDLEFIELD MEASURED 4.25 INCHES OF RAINFALL IN 3 HOURS SINCE 2 AM EDT AND STILL RAINING.
Oct 9, 5:20 AM EDT	HEAVY RAIN 3	1 Sse Middlefield, OH	A PRIVATE WEATHER STATION AT THE GEAUGA COUNTY AIRPORT MEASURED 3.0 INCHES OF RAINFALL IN 3 HOURS SINCE 2 AM AND STILL RAINING.
Oct 9, 5:30 AM EDT	HEAVY RAIN 2.94	5 Nne West Farmington, OH	MEASURED 2.94 INCHES SINCE 2 AM AND STILL RAINING.
Oct 9, 5:36 AM EDT	FLASH FLOOD	Middlefield, OH	APARTMENT FLOODING AT GROVE MANOR APARTMENTS IN MIDDLEFIELD DUE TO RISING FLOOD WATER FROM NEARBY CREEK.
Oct 9, 5:45 AM EDT	HEAVY RAIN 2.53	Garrettsville, OH	MESONET STATION GRVO1 GARRETTSVILLE MEASURED 2.53 INCHES OF RAINFALL IN THE LAST 6 HOURS.
Oct 9, 5:54 AM EDT	FLASH FLOOD	Middlefield, OH	HIGH WATER RESCUES ONGOING AT APARTMENT COMPLEX NEAR MIDDLEFIELD.
Oct 9, 5:55 AM EDT	FLASH FLOOD	1 N Middlefield, OH	CAR STRANDED IN FLOOD WATER OFF NORTH STATE AVE NEAR MIDDLEFIELD.
Oct 9, 6:01 AM EDT	FLASH FLOOD	Middlefield, OH	MULTIPLE ROADS ARE CLOSED AND IMPASSABLE DUE TO FLASH FLOODING AROUND THE MIDDLEFIELD AREA INCLUDING NORTH STATE AVE AND GROVE ST.
Oct 9, 6:10 AM EDT	HEAVY RAIN 4.94	5 Se Roaming Shores, OH	MESONET STATION NLYO1 4.6 SE ROAMING SHORES MEASURED 4.94 INCHES OF RAINFALL IN THE LAST 6 HOURS.
Oct 9, 6:15 AM EDT	HEAVY RAIN 2.89	5 Nne West Farmington, OH	MESONET STATION FW0030 MESOPOTAMIA MEASURED 2.89 INCHES OF RAINFALL IN THE LAST 6 HOURS.
Oct 9, 6:20 AM EDT	FLASH FLOOD	5 Wsw West Farmington, OH	HIGHWAY 422 AND STATE ROUTE 88 IS CLOSED NEAR PARKMAN TOWNSHIP DUE TO FLASH FLOODING.
Oct 9, 6:20 AM EDT	HEAVY RAIN 4.37	5 Wsw West Farmington, OH	MESONET STATION 8236D 6 S MIDDLEFIELD MEASURED 4.37 INCHES OF RAINFALL IN THE LAST 6 HOURS.
Oct 9, 6:42 AM EDT	FLASH FLOOD	Garrettsville, OH	HIGH WATER RESCUE WITH CAR STRANDED IN FLOOD WATER ON WINDHAM STREET.
Oct 9, 7:10 AM EDT	HEAVY RAIN 2.48	1 E Ravenna, OH	COCORAHS STATION RAVENNA 0.5 E.
Oct 9, 7:15 AM EDT	FLASH FLOOD	1 E Windham, OH	ROUTE 303 DAMAGED EAST OF WINDHAM DUE TO FLOODING.
Oct 9, 7:22 AM EDT	FLASH FLOOD	4 Wsw Burton, OH	MUSIC STREET WAS CLOSED AND IMPASSABLE DUE TO FLOODING BETWEEN KIDD DRIVE AND RAVENNA ROAD.
Oct 9, 8:00 AM EDT	HEAVY RAIN 2.49	7 Ene Aquilla, OH	COCORAHS STATION MONTVILLE 1.2 SSE.
Oct 9, 8:00 AM EDT	HEAVY RAIN 2.62	2 E Ravenna, OH	MESONET STATION 2.4 E RAVENNA.
Oct 9, 8:53 AM EDT	FLOOD	1 Ene Garrettsville, OH	EAGLE CREEK IS OUT OF ITS BANKS AND FLOWING OVER THE BRIDGE ON BROSIUS ROAD. VIDEO WAS OBTAINED FROM SOCIAL MEDIA.

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 00:00Z, 8.3 hours before the alert went out and 143 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: 306 J/kg
Mixed-layer CIN: -20 J/kg
Mixed-layer LCL: 1035 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 30 m²/s²
0-3 km storm-relative helicity: 61 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

663 
WGUS51 KCLE 090819
FFWCLE
OHC007-055-133-155-091245-
/O.NEW.KCLE.FF.W.0025.211009T0819Z-211009T1245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Cleveland OH
419 AM EDT Sat Oct 9 2021

The National Weather Service in Cleveland has issued a

* Flash Flood Warning for...
  Southwestern Ashtabula County in northeastern Ohio...
  Eastern Geauga County in northeastern Ohio...
  Northeastern Portage County in northeastern Ohio...
  Northwestern Trumbull County in northeastern Ohio...

* Until 845 AM EDT.

* At 419 AM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. The expected rainfall rate is 1 
  to 1.5 inches in 1 hour. Additional rainfall amounts of 1 to 2 
  inches are possible in the warned area. Flash flooding is already 
  occurring.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  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...
  Ravenna, Chardon, Newton Falls, Middlefield, Garrettsville, North 
  Bloomfield, Orwell, Burton, Mantua, West Farmington, Bristolville, 
  Parkman, Huntsburg, Claridon, Windham, Montville, Hartsgrove, 
  Roaming Shores, Hiram and Cherry Valley.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

In hilly terrain there are hundreds of low water crossings which are 
potentially dangerous in heavy rain. Do not attempt to cross flooded 
roads. Find an alternate route.

&&

LAT...LON 4135 8122 4156 8119 4166 8106 4171 8097
      4173 8086 4172 8067 4161 8063 4114 8100
      4115 8126

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1-1.5 INCHES IN 1 HOUR

$$

Griffin

2 follow-up statements

102 
WGUS71 KCLE 090852
FFSCLE

Flash Flood Statement
National Weather Service Cleveland OH
452 AM EDT Sat Oct 9 2021

OHC007-055-133-155-091245-
/O.CON.KCLE.FF.W.0025.000000T0000Z-211009T1245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Ashtabula OH-Geauga OH-Portage OH-Trumbull OH-
452 AM EDT Sat Oct 9 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 845 AM EDT THIS 
MORNING FOR SOUTHWESTERN ASHTABULA, EASTERN GEAUGA, NORTHEASTERN 
PORTAGE AND NORTHWESTERN TRUMBULL COUNTIES...

At 452 AM EDT, local law enforcement reported thunderstorms 
producing heavy rain across the warned area. Between 2 and 4 inches 
of rain have fallen. The expected rainfall rate is 1 to 2 inches in 
1 hour. Additional rainfall amounts of 1 to 2 inches are possible in 
the warned area. Flash flooding is already occurring.

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...
  Ravenna, Chardon, Newton Falls, Middlefield, Garrettsville, North 
  Bloomfield, Orwell, Burton, Mantua, West Farmington, Bristolville, 
  Parkman, Huntsburg, Claridon, Windham, Montville, Hartsgrove, 
  Roaming Shores, Hiram and Cherry Valley.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

In hilly terrain there are hundreds of low water crossings which are 
potentially dangerous in heavy rain. Do not attempt to cross flooded 
roads. Find an alternate route.

&&

LAT...LON 4135 8122 4156 8119 4166 8106 4171 8097
      4173 8086 4172 8067 4161 8063 4114 8100
      4115 8126

FLASH FLOOD...OBSERVED
EXPECTED RAINFALL...1-2 INCHES IN 1 HOUR

$$

Griffin

776 
WGUS71 KCLE 090942
FFSCLE

Flash Flood Statement
National Weather Service Cleveland OH
542 AM EDT Sat Oct 9 2021

OHC007-055-133-155-091245-
/O.CON.KCLE.FF.W.0025.000000T0000Z-211009T1245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Ashtabula OH-Geauga OH-Portage OH-Trumbull OH-
542 AM EDT Sat Oct 9 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 845 AM EDT THIS 
MORNING FOR SOUTHWESTERN ASHTABULA, EASTERN GEAUGA, NORTHEASTERN 
PORTAGE AND NORTHWESTERN TRUMBULL COUNTIES...

At 542 AM EDT, local law enforcement reported thunderstorms 
producing heavy rain across the warned area. Between 2 and 5 inches 
of rain have fallen. The expected rainfall rate is 0.5 to 1.5 inches 
in 1 hour. Additional rainfall amounts of 0.5 to 1.5 inches are 
possible in the warned area. Flash flooding is already occurring.

HAZARD...Life threatening flash flooding. Thunderstorms producing
         flash flooding.

SOURCE...Law enforcement reported.

IMPACT...Life threatening flash flooding of creeks and streams,
         urban areas, highways, streets and underpasses.

Some locations that will experience flash flooding include...
  Ravenna, Chardon, Newton Falls, Middlefield, Garrettsville, North 
  Bloomfield, Orwell, Burton, Mantua, West Farmington, Bristolville, 
  Parkman, Huntsburg, Claridon, Windham, Montville, Hartsgrove, 
  Roaming Shores, Hiram and Cherry Valley.

Numerous roadways are flooded near Middlefield, Garretsville, 
Parkman Township, and west of Mesopotamia. Several reports of 
flooded basements and flood waters entering homes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

In hilly terrain there are hundreds of low water crossings which are 
potentially dangerous in heavy rain. Do not attempt to cross flooded 
roads. Find an alternate route.

&&

LAT...LON 4135 8122 4156 8119 4166 8106 4171 8097
      4173 8086 4172 8067 4161 8063 4114 8100
      4115 8126

FLASH FLOOD...OBSERVED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL...0.5-1.5 INCHES IN 1 HOUR

$$

Griffin

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 8, 8:15 PM EDT	Special Marine Warning	CLE		60 min
Oct 8, 8:38 PM EDT	Special Weather Statement	CLE	Ottawa	52 min
Oct 8, 9:41 PM EDT	Special Weather Statement	CLE	Sandusky	49 min
Oct 8, 9:43 PM EDT	Special Marine Warning	CLE		92 min
Oct 8, 9:54 PM EDT	Severe Thunderstorm Warning	CLE	Sandusky	36 min
Oct 8, 10:32 PM EDT	Special Weather Statement	CLE	Ottawa	28 min
Oct 9, 1:56 AM EDT	Areal Flood Advisory	CLE	Ashtabula, Mahoning, Trumbull	8 hr
Oct 9, 2:16 AM EDT	Areal Flood Advisory	CLE	Geauga, Lake	4 hr
Oct 9, 4:12 AM EDT	Areal Flood Advisory	CLE	Portage, Stark, Summit	5 hr
Oct 9, 8:44 AM EDT	Areal Flood Warning	CLE	Ashtabula, Geauga, Portage, Trumbull	3 hr
Oct 9, 10:11 AM EDT	River Flood Warning	CLE	Trumbull	35 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.