Alert archive / Ohio / Flash Flood Warnings in 2021

Flash Flood Warning 15, NWS Cleveland, OH

July 16, 20215 counties in Ohio

NWS Cleveland, OH issued this flash flood warning at Jul 16, 2021, 7:41 PM EDT for 5 counties in Ohio. It was in force for 6 hr. 6 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: Jul 16, 2021, 7:41 PM EDT (23:41 UTC)
Expired: Jul 17, 2021, 1:45 AM EDT
In force: 6 hr
Issued by: NWS Cleveland, OH
Area: Storm-based polygon
Flood severity: None

Counties Ashland County, OH, Crawford County, OH, Huron County, OH, Richland County, OH, Seneca County, OH

The radar

The Cleveland radar (KCLE), 74 km from the middle of the area, began a volume at 23:40 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
Jul 16, 8:05 PM EDT	FLOOD	Willard, OH	STANDING AND FLOWING WATER 4 TO 8 INCHES DEEP.
Jul 16, 8:20 PM EDT	FLASH FLOOD	6 N North Robinson, OH	FLOWING WATER ACROSS ROUTE 98.
Jul 16, 8:51 PM EDT	FLASH FLOOD	Bailey Lakes, OH	WATER IS TOPPING A POND AND FLOWING INTO ANOTHER POND FLOODING STATE ROUTE 250.
Jul 16, 10:09 PM EDT	FLASH FLOOD	1 Sse Shelby, OH	ROAD IS FLOODING ON MICKEY ROAD AND ROGERS LANE. WATER IS 3 FEET DEEP.
Jul 16, 11:22 PM EDT	FLOOD	4 W Savannah, OH	SEVERAL ROADS CLOSED DUE TO HIGH WATER ACROSS THE NORTHERN PART OF THE COUNTY THIS EVENING, INCLUDING CLEAR CREEK RD FROM TOWN LINE RD TO THE ASHLAND COUNTY LINE.
Jul 16, 11:30 PM EDT	FLASH FLOOD	6 N Polk, OH	3-3.5 FT OF FLOWING WATER OVER MULTIPLE ROADWAYS IN SULLIVAN TOWNSHIP. MULTIPLE ROADS ARE IMPASSABLE WITH SEVERAL RESIDENTS UNABLE TO LEAVE THEIR HOMES.

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, 11.7 hours before the alert went out and 203 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: 291 J/kg
Mixed-layer CIN: -68 J/kg
Mixed-layer LCL: 941 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 99 m²/s²
0-3 km storm-relative helicity: 92 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

As transmitted.

135 
WGUS51 KCLE 162341
FFWCLE
OHC005-033-077-139-147-170545-
/O.NEW.KCLE.FF.W.0015.210716T2341Z-210717T0545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Cleveland OH
741 PM EDT Fri Jul 16 2021

The National Weather Service in Cleveland has issued a

* Flash Flood Warning for...
  Northern Ashland County in north central Ohio...
  Crawford County in north central Ohio...
  Southern Huron County in north central Ohio...
  Northern Richland County in north central Ohio...
  Southeastern Seneca County in northwestern Ohio...

* Until 145 AM EDT Saturday.

* At 741 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...
  Bucyrus, Shelby, Willard, New London, Plymouth, New Washington, 
  Savannah, Polk, Chatfield, Sullivan, Greenwich, Attica, North 
  Fairfield, Bailey Lakes, Tiro, North Robinson, Shenandoah, Sulpher 
  Springs, Nova and Oceola.

Additional rainfall amounts of 1 to 3 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.

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

&&

LAT...LON 4090 8311 4114 8283 4114 8234 4107 8234
      4106 8217 4099 8217 4099 8213 4097 8213
      4072 8311

FLASH FLOOD...RADAR INDICATED

$$

Sefcovic

2 follow-up statements

965 
WGUS71 KCLE 170327
FFSCLE

Flash Flood Statement
National Weather Service Cleveland OH
1127 PM EDT Fri Jul 16 2021

OHC005-033-077-139-147-170545-
/O.CON.KCLE.FF.W.0015.000000T0000Z-210717T0545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Ashland OH-Crawford OH-Huron OH-Richland OH-Seneca OH-
1127 PM EDT Fri Jul 16 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 145 AM EDT SATURDAY 
FOR NORTHERN ASHLAND, CRAWFORD, SOUTHERN HURON, NORTHERN RICHLAND 
AND SOUTHEASTERN SENECA COUNTIES...

At 1127 PM EDT, local law enforcement reported flash flooding across 
the warned area. Between 2 and 4 inches of rain have fallen. Several 
road closures have been reported across the warned area due to flash 
flooding.

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...
  Bucyrus, Shelby, Willard, New London, Plymouth, New Washington, 
  Savannah, Polk, Chatfield, Sullivan, Greenwich, Attica, North 
  Fairfield, Bailey Lakes, Tiro, North Robinson, Shenandoah, Sulpher 
  Springs, Nova and Oceola.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

&&

LAT...LON 4090 8311 4114 8283 4114 8234 4107 8234
      4106 8217 4099 8217 4099 8213 4097 8213
      4072 8311

FLASH FLOOD...OBSERVED

$$

Greenawalt

809 
WGUS71 KCLE 170546
FFSCLE

Flash Flood Statement
National Weather Service Cleveland OH
146 AM EDT Sat Jul 17 2021

OHC005-033-077-139-147-170556-
/O.EXP.KCLE.FF.W.0015.000000T0000Z-210717T0545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Ashland OH-Crawford OH-Huron OH-Richland OH-Seneca OH-
146 AM EDT Sat Jul 17 2021

...FLASH FLOOD WARNING HAS EXPIRED FOR NORTHERN ASHLAND, CRAWFORD, 
SOUTHERN HURON, NORTHERN RICHLAND AND SOUTHEASTERN SENECA COUNTIES...

Flood waters have receded and flooding is no longer posing a threat. 
Please continue to heed remaining road closures.

Additional heavy rain and flooding are possible through Saturday 
morning. A Flash Flood Watch remains in effect until 800 AM EDT 
Saturday for portions of Ohio and northwest Pennsylvania.

LAT...LON 4090 8311 4114 8283 4114 8234 4107 8234
      4106 8217 4099 8217 4099 8213 4097 8213
      4072 8311

$$

Maines

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 15, 8:53 PM EDT	Special Weather Statement	CLE	Portage	37 min
Jul 15, 8:59 PM EDT	Special Weather Statement	CLE	Trumbull	31 min
Jul 16, 3:07 AM EDT	Flash Flood Watch	CLE	Ashland, Ashtabula, Crawford, Cuyahoga, Erie, Geauga and 22 more	36 hr
Jul 16, 12:53 PM EDT	Special Weather Statement	CLE	Trumbull	37 min
Jul 16, 3:45 PM EDT	Small Craft Advisory	CLE		35 hr
Jul 16, 3:49 PM EDT	Beach Hazards Statement	CLE	Ashtabula, Cuyahoga, Erie, Lake, Lorain	35 hr
Jul 16, 4:20 PM EDT	Special Weather Statement	CLE	Knox	25 min
Jul 16, 4:29 PM EDT	Severe Thunderstorm Warning	CLE	Ashland, Holmes, Knox	46 min
Jul 16, 4:41 PM EDT	Special Weather Statement	CLE	Holmes	34 min
Jul 16, 4:52 PM EDT	Severe Thunderstorm Warning	CLE	Holmes, Stark, Wayne	38 min
Jul 16, 6:16 PM EDT	Areal Flood Advisory	CLE	Mahoning, Stark	3 hr
Jul 16, 6:34 PM EDT	Areal Flood Advisory	CLE	Crawford, Richland, Wyandot	3 hr
Jul 16, 7:04 PM EDT	Areal Flood Advisory	CLE	Trumbull	3 hr
Jul 16, 7:05 PM EDT	Special Weather Statement	CLE	Medina	25 min
Jul 16, 7:28 PM EDT	Areal Flood Advisory	CLE	Ashland, Huron, Lorain, Medina, Seneca	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.