Alert archive / Ohio / Flash Flood Warnings in 2021

Flash Flood Warning 13, NWS Cleveland, OH

July 12, 2021Cuyahoga County, Ohio

NWS Cleveland, OH issued this flash flood warning at Jul 12, 2021, 5:34 PM EDT for Cuyahoga County, Ohio. It was in force for 2 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: Jul 12, 2021, 5:34 PM EDT (21:34 UTC)
Expired: Jul 12, 2021, 7:51 PM EDT
In force: 2 hr
Issued by: NWS Cleveland, OH
Area: Storm-based polygon
Damage threat: Considerable
Flood severity: None

County Cuyahoga County, OH

The radar

The Cleveland radar (KCLE), 18 km from the middle of the area, began a volume at 21:35 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, 9.6 hours before the alert went out and 184 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: 173 J/kg
Mixed-layer CIN: -65 J/kg
Mixed-layer LCL: 637 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 26 m²/s²
0-3 km storm-relative helicity: 46 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

As transmitted.

532 
WGUS51 KCLE 122134
FFWCLE
OHC035-130245-
/O.NEW.KCLE.FF.W.0013.210712T2134Z-210713T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Cleveland OH
534 PM EDT Mon Jul 12 2021

The National Weather Service in Cleveland has issued a

* Flash Flood Warning for...
  Central Cuyahoga County in northeastern Ohio...

* Until 1045 PM EDT.

* At 534 PM EDT, the public reported thunderstorms producing heavy 
  rain across the warned area. Between 1 and 3 inches of rain have 
  fallen. Flash flooding is ongoing.

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

  SOURCE...Public.

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

* Some locations that will experience flash flooding include...
  Cleveland, Parma, Lakewood, Euclid, Cleveland Heights, Westlake, 
  North Ridgeville, Solon, Avon Lake, Warrensville Heights, Highland 
  Hills, North Olmsted, Garfield Heights, Shaker Heights, Maple 
  Heights, South Euclid, Avon, Parma Heights, Rocky River and Brook 
  Park.

Additional rainfall amounts of 1 to 2 inches are possible in the 
warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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.

&&

LAT...LON 4154 8197 4152 8192 4151 8188 4152 8181
      4152 8175 4163 8155 4163 8148 4158 8148
      4157 8148 4154 8147 4141 8148 4139 8197

FLASH FLOOD...OBSERVED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

Campbell

2 follow-up statements

943 
WGUS71 KCLE 122246
FFSCLE

Flash Flood Statement
National Weather Service Cleveland OH
646 PM EDT Mon Jul 12 2021

OHC035-130245-
/O.CON.KCLE.FF.W.0013.000000T0000Z-210713T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cuyahoga OH-
646 PM EDT Mon Jul 12 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1045 PM EDT THIS 
EVENING FOR CENTRAL CUYAHOGA COUNTY...

At 646 PM EDT, the public reported thunderstorms producing heavy 
rain across the warned area. Between 1 and 3 inches of rain have 
fallen. Flash flooding is ongoing.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Public.

IMPACT...Flooding of small creeks and streams, urban areas,
         highways, streets and underpasses as well as other
         drainage and low lying areas.

Some locations that will experience flash flooding include...
Cleveland, Parma, Lakewood, Euclid, Cleveland Heights, Westlake, 
North Ridgeville, Solon, Avon Lake, Warrensville Heights, Highland 
Hills, North Olmsted, Garfield Heights, Shaker Heights, Maple 
Heights, South Euclid, Avon, Parma Heights, Rocky River and Brook 
Park.

Additional rainfall amounts up to 1 inch are possible in the warned 
area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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.

&&

LAT...LON 4154 8197 4152 8192 4151 8188 4152 8181
      4152 8175 4163 8155 4163 8148 4158 8148
      4157 8148 4154 8147 4141 8148 4139 8197

FLASH FLOOD...OBSERVED

$$

Campbell

075 
WGUS71 KCLE 122351
FFSCLE

Flash Flood Statement
National Weather Service Cleveland OH
751 PM EDT Mon Jul 12 2021

OHC035-130001-
/O.CAN.KCLE.FF.W.0013.000000T0000Z-210713T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cuyahoga OH-
751 PM EDT Mon Jul 12 2021

...FLASH FLOOD WARNING IS CANCELLED FOR CENTRAL CUYAHOGA COUNTY...

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

A Flash Flood Watch remains in effect until 1000 PM EDT for portions 
of Ohio and northwest Pennsylvania.

LAT...LON 4154 8197 4152 8192 4151 8188 4152 8181
      4152 8175 4163 8155 4163 8148 4158 8148
      4157 8148 4154 8147 4141 8148 4139 8197

$$

Sefcovic

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 11, 8:39 PM EDT	Areal Flood Advisory	CLE	Ashland, Richland	3 hr
Jul 12, 3:18 AM EDT	Flash Flood Watch	CLE	Ashtabula, Cuyahoga, Erie, Geauga, Huron, Lake and 5 more	18 hr
Jul 12, 11:20 AM EDT	Areal Flood Advisory	CLE	Cuyahoga, Lorain	3 hr
Jul 12, 11:59 AM EDT	Flash Flood Warning	CLE	Lorain, Medina	4 hr
Jul 12, 3:41 PM EDT	Special Weather Statement	CLE	Huron	34 min
Jul 12, 4:07 PM EDT	Special Weather Statement	CLE	Sandusky, Seneca	38 min
Jul 12, 4:30 PM EDT	Flash Flood Warning	CLE	Ashland, Cuyahoga, Lorain, Medina	6 hr
Jul 12, 4:32 PM EDT	Special Weather Statement	CLE	Medina	28 min
Jul 12, 5:11 PM EDT	Areal Flood Advisory	CLE	Cuyahoga, Geauga, Portage, Summit	6 hr
Jul 12, 5:33 PM EDT	Special Weather Statement	CLE	Stark	27 min

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.