Alert archive / Ohio / Flash Flood Warnings in 2021

Flash Flood Warning 1, NWS Cleveland, OH

June 3, 2021Marion County, Ohio

NWS Cleveland, OH issued this flash flood warning at Jun 3, 2021, 4:47 PM EDT for Marion 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 3, 2021, 4:47 PM EDT (20:47 UTC)
Expired: Jun 3, 2021, 7:02 PM EDT
In force: 2 hr
Issued by: NWS Cleveland, OH
Area: Storm-based polygon
Flood severity: None

County Marion County, OH

The radar

The Cincinnati radar (KILN), 139 km from the middle of the area, began a volume at 20:51 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 3, 5:10 PM EDT	FLASH FLOOD	Marion, OH	SEVERAL ROADWAYS WERE IMPASSABLE DUE TO HIGH WATER IN DOWNTOWN MARION. SEVERAL ROADS WERE CLOSED DUE TO HIGH WATER. FIRE DEPT CONDUCTED SEVERAL WATER RESCUES OF PEOPLE IN CARS STRANDED BY HIGH WATER ON ROADS. SEVERAL LOCAL BUSINESSES SAID WATER WAS TWO FEET DE
Jun 3, 5:10 PM EDT	FLASH FLOOD	Marion, OH	SEVERAL ROADS WERE IMPASSABLE AND CLOSED DUE TO HIGH WATER IN DOWNTOWN MARION. FIRE DEPT CONDUCTED SEVERAL WATER RESCUES OF PEOPLE IN CARS STRANDED DUE TO HIGH WATER ON ROADS. SEVERAL LOCAL BUSINESSES SAID WATER WAS TWO FEET DEEP OUTSIDE THEIR BUSINESS. THE HI

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, 8.8 hours before the alert went out and 137 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: 455 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 492 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 46 m²/s²
0-3 km storm-relative helicity: 73 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

As transmitted.

508 
WGUS51 KCLE 032047
FFWCLE
OHC101-040230-
/O.NEW.KCLE.FF.W.0001.210603T2047Z-210604T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Cleveland OH
447 PM EDT Thu Jun 3 2021

The National Weather Service in Cleveland has issued a

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

* Until 1030 PM EDT.

* At 447 PM EDT, local law enforcement reported thunderstorms 
  producing heavy rain across the warned area. Between 1 and 1.5 
  inches of rain have fallen. Flash flooding is already occurring.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Law enforcement.

  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, La Rue, Caledonia, New Bloomington and Green Camp.

Several roads in downtown Marion are closed by public safety 
officials and are impassable.

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.

Please report flooding to your local law enforcement agency when you 
can do so safely.

A Flash Flood Warning means that flooding is imminent or occurring. 
If you are in the warned area move to higher ground immediately. 
Residents living along streams and creeks should take immediate 
precautions to protect life and property.

&&

LAT...LON 4058 8342 4070 8314 4070 8295 4065 8295
      4065 8296 4049 8296 4050 8325 4051 8325
      4051 8342 4052 8342 4054 8342

FLASH FLOOD...OBSERVED
EXPECTED RAINFALL...1-1.5 INCHES IN 2 HOURS 

$$

Griffin

2 follow-up statements

833 
WGUS71 KCLE 032152
FFSCLE

Flash Flood Statement
National Weather Service Cleveland OH
552 PM EDT Thu Jun 3 2021

OHC101-040230-
/O.CON.KCLE.FF.W.0001.000000T0000Z-210604T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Marion OH-
552 PM EDT Thu Jun 3 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1030 PM EDT THIS 
EVENING FOR CENTRAL MARION COUNTY...

At 552 PM EDT, local law enforcement reported thunderstorms 
producing heavy rain across the warned area. Between 1 and 2.5 
inches of rain have fallen. Flash flooding is already occurring.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Law enforcement.

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 Green Camp.

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.

Please report flooding to your local law enforcement agency when you 
can do so safely.

A Flash Flood Warning means that flooding is imminent or occurring. 
If you are in the warned area move to higher ground immediately. 
Residents living along streams and creeks should take immediate 
precautions to protect life and property.

&&

LAT...LON 4060 8330 4065 8316 4065 8303 4051 8303
      4051 8325 4051 8331

FLASH FLOOD...OBSERVED

$$

Griffin

430 
WGUS71 KCLE 032302
FFSCLE

Flash Flood Statement
National Weather Service Cleveland OH
702 PM EDT Thu Jun 3 2021

OHC101-032312-
/O.CAN.KCLE.FF.W.0001.000000T0000Z-210604T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Marion OH-
702 PM EDT Thu Jun 3 2021

...FLASH FLOOD WARNING IS CANCELLED FOR CENTRAL 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 4060 8330 4065 8316 4065 8303 4051 8303
      4051 8325 4051 8331

$$

Griffin

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 3, 4:31 PM EDT	Areal Flood Advisory	CLE	Marion	16 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.