Alert archive / Ohio / Flash Flood Warnings in 2021

Flash Flood Warning 23, NWS Cleveland, OH

August 26, 2021Morrow County, Ohio

NWS Cleveland, OH issued this flash flood warning at Aug 26, 2021, 6:20 PM EDT for Morrow County, Ohio. It was in force for 3 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 26, 2021, 6:20 PM EDT (22:20 UTC)
Expired: Aug 26, 2021, 9:12 PM EDT
In force: 3 hr
Issued by: NWS Cleveland, OH
Area: Storm-based polygon
Flood severity: None

County Morrow County, OH

The radar

The Cleveland radar (KCLE), 122 km from the middle of the area, began a volume at 22:19 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

Cncnati-Daytn, OH (KILN), launched 12:00Z, 10.3 hours before the alert went out and 153 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: 1291 J/kg
Mixed-layer CIN: -31 J/kg
Mixed-layer LCL: 807 m above ground
0-6 km bulk shear: 5 kt
0-1 km storm-relative helicity: 5 m²/s²
0-3 km storm-relative helicity: -4 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

766 
WGUS51 KCLE 262220
FFWCLE
OHC117-270330-
/O.NEW.KCLE.FF.W.0023.210826T2220Z-210827T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Cleveland OH
620 PM EDT Thu Aug 26 2021

The National Weather Service in Cleveland has issued a

* Flash Flood Warning for...
  Central Morrow County in north central Ohio...

* Until 1130 PM EDT.

* At 620 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 2 and 3 inches of rain 
  have fallen. Additional rainfall amounts of 1 to 2 inches are 
  possible in the warned area. Flash flooding is ongoing or expected 
  to begin shortly.

  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...
  Mount Gilead, Cardington, Edison, Fulton and Shauck.

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.

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 4048 8302 4049 8296 4054 8296 4071 8274
      4071 8263 4067 8263 4066 8264 4064 8264
      4064 8263 4058 8263 4042 8286 4042 8302

FLASH FLOOD...RADAR INDICATED

$$

Sefcovic

1 follow-up statement

189 
WGUS71 KCLE 270112
FFSCLE

Flash Flood Statement
National Weather Service Cleveland OH
912 PM EDT Thu Aug 26 2021

OHC117-270122-
/O.CAN.KCLE.FF.W.0023.000000T0000Z-210827T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Morrow OH-
912 PM EDT Thu Aug 26 2021

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

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

LAT...LON 4048 8302 4049 8296 4054 8296 4071 8274
      4071 8263 4067 8263 4066 8264 4064 8264
      4064 8263 4058 8263 4042 8286 4042 8302

$$

Sefcovic

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 26, 3:55 AM EDT	Special Weather Statement	CLE	Lucas	50 min
Aug 26, 4:15 AM EDT	Areal Flood Advisory	CLE	Lucas, Wood	4 hr
Aug 26, 2:47 PM EDT	Special Weather Statement	CLE	Geauga	43 min
Aug 26, 3:18 PM EDT	Special Weather Statement	CLE	Summit	42 min
Aug 26, 3:43 PM EDT	Areal Flood Advisory	CLE	Cuyahoga	2 hr
Aug 26, 4:04 PM EDT	Special Weather Statement	CLE	Summit	41 min
Aug 26, 5:29 PM EDT	Special Weather Statement	CLE	Ashland	31 min
Aug 26, 5:38 PM EDT	Special Weather Statement	CLE	Morrow, Richland	52 min
Aug 26, 5:59 PM EDT	Areal Flood Advisory	CLE	Morrow, Richland	2 hr
Aug 26, 6:57 PM EDT	Special Weather Statement	CLE	Holmes	48 min
Aug 26, 7:28 PM EDT	Areal Flood Advisory	CLE	Holmes	103 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.