Alert archive / Ohio / Flash Flood Warnings in 2021

Flash Flood Warning 4, NWS Cleveland, OH

June 9, 2021Cuyahoga County, Summit County, Ohio

NWS Cleveland, OH issued this flash flood warning at Jun 9, 2021, 5:44 PM EDT for Cuyahoga County, Summit County, Ohio. It was in force for 2 hr. 2 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: Jun 9, 2021, 5:44 PM EDT (21:44 UTC)
Expired: Jun 9, 2021, 7:57 PM EDT
In force: 2 hr
Issued by: NWS Cleveland, OH
Area: Storm-based polygon
Flood severity: None

Counties Cuyahoga County, OH, Summit County, OH

The radar

The Cleveland radar (KCLE), 34 km from the middle of the area, began a volume at 21:44 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
Jun 9, 6:09 PM EDT	HEAVY RAIN 2.2	Bedford, OH	SPOTTER REPORTS 2.2 INCHES OF RAINFALL IN THE LAST 45 MINUTES.
Jun 9, 6:17 PM EDT	FLASH FLOOD	2 Ese Glenwillow, OH	N. BURR OAK RD. - LARGE STRETCH IMPASSABLE DUE TO HIGH WATER (PHOTO 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 12:00Z, 9.7 hours before the alert went out and 156 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: 45 J/kg
Mixed-layer CIN: -67 J/kg
Mixed-layer LCL: 927 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 57 m²/s²
0-3 km storm-relative helicity: 36 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

142 
WGUS51 KCLE 092144
FFWCLE
OHC035-153-100030-
/O.NEW.KCLE.FF.W.0004.210609T2144Z-210610T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Cleveland OH
544 PM EDT Wed Jun 9 2021

The National Weather Service in Cleveland has issued a

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

* Until 830 PM EDT.

* At 544 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1.5 and 2.5 inches of 
  rain have fallen. Flash flooding is ongoing or expected to begin 
  shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Doppler radar.

  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, Solon, Twinsburg, Warrensville Heights, Macedonia, 
  Garfield Heights, Maple Heights, Aurora, Bedford, Bedford Heights, 
  Northfield, Reminderville, Walton Hills, Valley View, North 
  Randall, Glenwillow and Bentleyville.

Additional rainfall amounts of 0.5 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.

Move to higher ground now. Act quickly to protect your life.

&&

LAT...LON 4143 8159 4142 8142 4136 8139 4135 8139
      4134 8139 4133 8139 4132 8139 4131 8156

FLASH FLOOD...RADAR INDICATED

$$

26

1 follow-up statement

049 
WGUS71 KCLE 092357
FFSCLE

Flash Flood Statement
National Weather Service Cleveland OH
757 PM EDT Wed Jun 9 2021

OHC035-153-100007-
/O.CAN.KCLE.FF.W.0004.000000T0000Z-210610T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cuyahoga OH-Summit OH-
757 PM EDT Wed Jun 9 2021

...FLASH FLOOD WARNING IS CANCELLED FOR EAST CENTRAL CUYAHOGA AND 
NORTHEASTERN SUMMIT COUNTIES...

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

LAT...LON 4143 8159 4142 8142 4136 8139 4135 8139
      4134 8139 4133 8139 4132 8139 4131 8156

$$

26

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 9, 1:29 PM EDT	Areal Flood Advisory	CLE	Ashtabula	3 hr
Jun 9, 5:30 PM EDT	Areal Flood Advisory	CLE	Cuyahoga, Summit	14 min
Jun 9, 6:17 PM EDT	Areal Flood Advisory	CLE	Erie	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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.