Alert archive / Ohio / Flash Flood Warnings in 2019

Flash Flood Warning 33, NWS Cleveland, OH

July 21, 2019Mahoning County, Ohio

NWS Cleveland, OH issued this flash flood warning at Jul 21, 2019, 5:01 PM EDT for Mahoning 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: Jul 21, 2019, 5:01 PM EDT (21:01 UTC)
Expired: Jul 21, 2019, 7:59 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), 72 km from the middle of the area, began a volume at 21:03 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

Pittsburgh, PA (KPIT), launched 12:00Z, 9.0 hours before the alert went out and 89 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: 1836 J/kg
Mixed-layer CIN: -26 J/kg
Mixed-layer LCL: 870 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 40 m²/s²
0-3 km storm-relative helicity: 72 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

909 
WGUS51 KCLE 212101
FFWCLE
OHC099-220200-
/O.NEW.KCLE.FF.W.0033.190721T2101Z-190722T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Cleveland OH
501 PM EDT Sun Jul 21 2019

The National Weather Service in Cleveland has issued a

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

* Until 1000 PM EDT.

* At 501 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Up to 1.5 inches of rain has 
  already fallen. An additional 1 to 2 inches of rain is likely. 
  Flash flooding is expected to begin shortly.

* Some locations that will experience flooding include...
  Youngstown, Salem, Columbiana, Boardman, Alliance, Canfield,
  Sebring, Struthers, Poland, Ellsworth, New Middletown, Lowellville,
  Beloit, Berlin Center, Maple Ridge and Greenford.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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 4099 8108 4099 8100 4106 8100 4106 8052
      4102 8051 4090 8052 4090 8082 4093 8083
      4093 8089 4090 8090 4091 8109

$$

Oudeman

1 follow-up statement

175 
WGUS71 KCLE 212359
FFSCLE

Flash Flood Statement
National Weather Service Cleveland OH
759 PM EDT Sun Jul 21 2019

OHC099-220008-
/O.CAN.KCLE.FF.W.0033.000000T0000Z-190722T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mahoning OH-
759 PM EDT Sun Jul 21 2019

...THE FLASH FLOOD WARNING FOR MAHONING COUNTY IS CANCELLED...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat. Additional rain will be likely later this evening. Be alert 
for any new warnings or advisories issued.

LAT...LON 4099 8108 4099 8100 4106 8100 4106 8052
      4102 8051 4090 8052 4090 8082 4093 8083
      4093 8089 4090 8090 4091 8109

$$

Oudeman

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 20, 8:23 PM EDT	Special Weather Statement	CLE	Geauga	52 min
Jul 20, 8:30 PM EDT	Severe Thunderstorm Warning	CLE	Ashtabula, Geauga, Trumbull	60 min
Jul 20, 8:47 PM EDT	Special Marine Warning	CLE		58 min
Jul 20, 9:40 PM EDT	Special Marine Warning	CLE		79 min
Jul 20, 9:43 PM EDT	Special Weather Statement	CLE	Ashtabula	47 min
Jul 20, 9:46 PM EDT	Severe Thunderstorm Warning	CLE	Ashtabula, Lake	59 min
Jul 21, 4:14 PM EDT	Severe Thunderstorm Warning	CLE	Huron	61 min
Jul 21, 4:34 PM EDT	Areal Flood Advisory	CLE	Wayne	4 hr
Jul 21, 4:47 PM EDT	Areal Flood Advisory	CLE	Wayne	4 hr
Jul 21, 4:58 PM EDT	Flash Flood Warning	CLE	Wayne	5 hr
Jul 21, 5:27 PM EDT	Severe Thunderstorm Warning	CLE	Mahoning, Trumbull	63 min
Jul 21, 5:30 PM EDT	Special Weather Statement	CLE	Wood	45 min
Jul 21, 5:46 PM EDT	Areal Flood Advisory	CLE	Crawford, Wyandot	4 hr
Jul 21, 6:04 PM EDT	Areal Flood Advisory	CLE	Mahoning, Trumbull	3 hr
Jul 21, 6:28 PM EDT	Special Weather Statement	CLE	Wood	62 min
Jul 21, 6:31 PM EDT	Areal Flood Advisory	CLE	Ashland, Crawford, Richland	4 hr
Jul 21, 6:35 PM EDT	Severe Thunderstorm Warning	CLE	Hancock, Sandusky, Seneca, Wood	55 min
Jul 21, 6:55 PM EDT	Special Weather Statement	CLE	Richland	50 min
Jul 21, 6:58 PM EDT	Tornado Warning	CLE	Hancock, Seneca, Wood	47 min
Jul 21, 7:04 PM EDT	Severe Thunderstorm Warning	CLE	Ashland, Holmes, Richland	56 min
Jul 21, 7:10 PM EDT	Flash Flood Warning	CLE	Ashland, Crawford, Richland	6 hr
Jul 21, 7:26 PM EDT	Flash Flood Warning	CLE	Wyandot	6 hr
Jul 21, 7:50 PM EDT	Areal Flood Advisory	CLE	Ashland, Holmes, Knox, Richland	6 hr

Nearby

Flash Flood Warnings in Ohio, 2019 Every flash flood warning in 2019

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.