Alert archive / Ohio / Flash Flood Warnings in 2021

Flash Flood Warning 8, NWS Cleveland, OH

June 10, 2021Marion County, Ohio

NWS Cleveland, OH issued this flash flood warning at Jun 10, 2021, 6:57 PM EDT for Marion County, Ohio. It was in force for 119 min. 1 report 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 10, 2021, 6:57 PM EDT (22:57 UTC)
Expired: Jun 10, 2021, 8:56 PM EDT
In force: 119 min
Issued by: NWS Cleveland, OH
Area: Storm-based polygon
Flood severity: None

County Marion County, OH

The radar

The Cleveland radar (KCLE), 127 km from the middle of the area, began a volume at 23:00 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 10, 8:08 PM EDT	FLOOD	Marion, OH	ISOLATED ROAD FLOODING ACROSS THE CITY OF MARION.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 11.0 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: 7 J/kg
Mixed-layer CIN: -43 J/kg
Mixed-layer LCL: 712 m above ground
0-6 km bulk shear: 5 kt
0-1 km storm-relative helicity: -10 m²/s²
0-3 km storm-relative helicity: 8 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

273 
WGUS51 KCLE 102257
FFWCLE
OHC101-110115-
/O.NEW.KCLE.FF.W.0008.210610T2257Z-210611T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Cleveland OH
657 PM EDT Thu Jun 10 2021

The National Weather Service in Cleveland has issued a

* Flash Flood Warning for...
  Northeastern Marion County in north central Ohio...

* Until 915 PM EDT.

* At 657 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 2 and 3 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...
  Marion and Caledonia.

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.

&&

LAT...LON 4070 8295 4068 8293 4065 8292 4065 8296
      4063 8296 4056 8313 4061 8319 4070 8303
      4070 8296

FLASH FLOOD...RADAR INDICATED

$$

26

1 follow-up statement

921 
WGUS71 KCLE 110056
FFSCLE

Flash Flood Statement
National Weather Service Cleveland OH
856 PM EDT Thu Jun 10 2021

OHC101-110106-
/O.CAN.KCLE.FF.W.0008.000000T0000Z-210611T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Marion OH-
856 PM EDT Thu Jun 10 2021

...FLASH FLOOD WARNING IS CANCELLED FOR NORTHEASTERN MARION COUNTY...

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

LAT...LON 4070 8295 4068 8293 4065 8292 4065 8296
      4063 8296 4056 8313 4061 8319 4070 8303
      4070 8296

$$

Sefcovic

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 10, 3:37 AM EDT	Beach Hazards Statement	CLE	Ashtabula, Cuyahoga, Erie, Lake, Lorain	19 hr
Jun 10, 3:52 AM EDT	Small Craft Advisory	CLE		19 hr
Jun 10, 3:29 PM EDT	Areal Flood Advisory	CLE	Sandusky, Seneca, Wood	3 hr
Jun 10, 3:45 PM EDT	Areal Flood Advisory	CLE	Huron	3 hr
Jun 10, 5:27 PM EDT	Areal Flood Advisory	CLE	Ashland	2 hr
Jun 10, 5:43 PM EDT	Areal Flood Advisory	CLE	Richland	12 min
Jun 10, 5:53 PM EDT	Areal Flood Advisory	CLE	Ashland, Medina	13 min
Jun 10, 5:55 PM EDT	Flash Flood Warning	CLE	Richland	2 hr
Jun 10, 5:57 PM EDT	Areal Flood Advisory	CLE	Crawford, Marion, Morrow, Richland	2 hr
Jun 10, 6:06 PM EDT	Flash Flood Warning	CLE	Ashland, Medina	3 hr
Jun 10, 6:11 PM EDT	Areal Flood Advisory	CLE	Marion	46 min
Jun 10, 6:28 PM EDT	Areal Flood Advisory	CLE	Medina, Summit	25 min
Jun 10, 6:44 PM EDT	Areal Flood Advisory	CLE	Stark, Summit	2 hr
Jun 10, 6:47 PM EDT	Areal Flood Advisory	CLE	Marion	2 hr
Jun 10, 6:53 PM EDT	Flash Flood Warning	CLE	Medina	119 min
Jun 10, 7:13 PM EDT	Flash Flood Warning	CLE	Summit	101 min
Jun 10, 7:56 PM EDT	Areal Flood Advisory	CLE	Richland	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.