Alert archive / Ohio / Flash Flood Warnings in 2020

Flash Flood Warning 17, NWS Cleveland, OH

September 7, 2020Mahoning County, Ohio

NWS Cleveland, OH issued this flash flood warning at Sep 7, 2020, 1:12 PM EDT for Mahoning County, Ohio. It was in force for 3 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: Sep 7, 2020, 1:12 PM EDT (17:12 UTC)
Expired: Sep 7, 2020, 4:15 PM EDT
In force: 3 hr
Issued by: NWS Cleveland, OH
Area: Storm-based polygon
Flood severity: None

County Mahoning County, OH

The radar

The Pittsburgh radar (KPBZ), 75 km from the middle of the area, began a volume at 17:11 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
Sep 7, 1:55 PM EDT	FLOOD	1 Sse Youngstown, OH	THREE CARS STUCK IN FLOOD WATERS ON 725 POLAND AVENUE.
Sep 7, 3:35 PM EDT	FLOOD	6 S Canfield, OH	SR 165 CLOSED BETWEEN US 62 AND SR 46 DUE TO HIGH WATER.

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, 5.2 hours before the alert went out and 92 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1916 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 213 m²/s²
0-3 km storm-relative helicity: 237 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

311 
WGUS51 KCLE 071712
FFWCLE
OHC099-072015-
/O.NEW.KCLE.FF.W.0017.200907T1712Z-200907T2015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Cleveland OH
112 PM EDT Mon Sep 7 2020

The National Weather Service in Cleveland has issued a

* Flash Flood Warning for...
  Mahoning County in northeastern Ohio...

* Until 415 PM EDT.

* At 112 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 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...
  Youngstown, Boardman, Alliance, Campbell, Canfield, Sebring, 
  Austintown, Struthers, Poland, Ellsworth, New Middletown, Craig 
  Beach, Lowellville, Beloit, Greenford, North Jackson, Mineral 
  Ridge, Berlin Center and Maple Ridge.

Additional rainfall amounts of 1 to 2 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.

&&

LAT...LON 4113 8100 4113 8052 4090 8052 4090 8082
      4093 8082 4093 8090 4090 8090 4090 8109
      4099 8109 4099 8100

FLASH FLOOD...RADAR INDICATED

$$

Greenawalt

1 follow-up statement

891 
WGUS71 KCLE 072014
FFSCLE

Flash Flood Statement
National Weather Service Cleveland OH
414 PM EDT Mon Sep 7 2020

OHC099-072024-
/O.EXP.KCLE.FF.W.0017.000000T0000Z-200907T2015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mahoning OH-
414 PM EDT Mon Sep 7 2020

...FLASH FLOOD WARNING WILL EXPIRE AT 415 PM EDT THIS AFTERNOON FOR 
MAHONING COUNTY...

The Flash Flood Warning has been replaced by a Flood Advisory. Flash 
flooding is no longer expected to pose a threat. Please continue to 
heed remaining road closures.

LAT...LON 4113 8100 4113 8052 4090 8052 4090 8082
      4093 8082 4093 8090 4090 8090 4090 8109
      4099 8109 4099 8100

$$

Greenawalt

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 7, 5:00 AM EDT	Special Marine Warning	CLE		90 min
Sep 7, 6:39 AM EDT	Special Weather Statement	CLE	Erie	51 min
Sep 7, 6:57 AM EDT	Special Weather Statement	CLE	Cuyahoga, Lorain	33 min
Sep 7, 7:52 AM EDT	Special Weather Statement	CLE	Cuyahoga, Erie, Geauga, Lake, Lorain	83 min
Sep 7, 7:58 AM EDT	Areal Flood Advisory	CLE	Cuyahoga, Erie, Geauga, Huron, Lake, Lorain and 5 more	4 hr
Sep 7, 8:26 AM EDT	Flash Flood Warning	CLE	Cuyahoga, Erie, Geauga, Huron, Lake, Lorain and 5 more	6 hr
Sep 7, 9:06 AM EDT	Special Weather Statement	CLE	Medina, Portage, Summit	54 min
Sep 7, 10:26 AM EDT	Areal Flood Advisory	CLE	Ashtabula, Geauga, Portage, Trumbull	4 hr
Sep 7, 11:26 AM EDT	Areal Flood Advisory	CLE	Lorain, Medina, Portage, Summit, Trumbull	5 hr
Sep 7, 11:33 AM EDT	River Flood Warning	CLE	Cuyahoga	17 hr
Sep 7, 12:39 PM EDT	Areal Flood Advisory	CLE	Mahoning, Portage, Stark, Summit	3 hr
Sep 7, 12:42 PM EDT	Areal Flood Advisory	CLE	Erie, Huron, Sandusky, Seneca	3 hr
Sep 7, 1:50 PM EDT	Flash Flood Warning	CLE	Lorain, Medina, Portage, Summit	4 hr
Sep 7, 1:59 PM EDT	Flash Flood Warning Considerable damage threat	CLE	Cuyahoga, Geauga, Lorain, Medina, Summit	4 hr
Sep 7, 2:05 PM EDT	Special Weather Statement	CLE	Knox	25 min
Sep 7, 2:40 PM EDT	Special Weather Statement	CLE	Holmes	35 min
Sep 7, 3:12 PM EDT	Special Weather Statement	CLE	Crawford	33 min
Sep 7, 3:45 PM EDT	Special Weather Statement	CLE	Ashland, Richland	30 min
Sep 7, 4:13 PM EDT	Areal Flood Advisory	CLE	Mahoning	3 hr
Sep 7, 4:14 PM EDT	Special Weather Statement	CLE	Marion	31 min
Sep 7, 4:22 PM EDT	Special Weather Statement	CLE	Holmes, Wayne	38 min
Sep 7, 4:29 PM EDT	Tornado Warning	CLE	Ashland, Knox, Richland	31 min
Sep 7, 4:54 PM EDT	Areal Flood Advisory	CLE	Ashland, Richland	3 hr
Sep 7, 4:57 PM EDT	Severe Thunderstorm Warning	CLE	Ashland, Holmes, Knox	48 min
Sep 7, 5:16 PM EDT	Severe Thunderstorm Warning	CLE	Knox, Morrow	59 min
Sep 7, 5:20 PM EDT	River Flood Warning	CLE	Lake	8 hr
Sep 7, 5:41 PM EDT	Areal Flood Advisory	CLE	Medina, Summit	2 hr
Sep 7, 5:44 PM EDT	Severe Thunderstorm Warning	CLE	Holmes	31 min
Sep 7, 5:48 PM EDT	Tornado Warning	CLE	Knox	30 min

Nearby

Flash Flood Warnings in Ohio, 2020 Every flash flood warning in 2020

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.