Alert archive / Ohio / Flash Flood Warnings in 2020

Flash Flood Warning 5, NWS Cleveland, OH

May 25, 2020Summit County, Ohio

NWS Cleveland, OH issued this flash flood warning at May 25, 2020, 6:26 PM EDT for Summit 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: May 25, 2020, 6:26 PM EDT (22:26 UTC)
Expired: May 25, 2020, 9:25 PM EDT
In force: 3 hr
Issued by: NWS Cleveland, OH
Area: Storm-based polygon
Flood severity: None

County Summit County, OH

The radar

The Cleveland radar (KCLE), 29 km from the middle of the area, began a volume at 22:28 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
May 25, 6:40 PM EDT	FLASH FLOOD	1 Nnw Peninsula, OH	RIVERVIEW ROAD CLOSED BETWEEN SR-303 AND STEIN ROAD FROM FLOOD DAMAGE. OTHER ROADS IN PENINSULA ALSO FLOODED.
May 25, 6:46 PM EDT	FLOOD	2 Nnw Peninsula, OH	SEVERAL INCHES OF WATER OVER ROADS AT RIVERVIEW RD AND BOSTON MILLS RD WITH HIGH WATER UNDER THE I 271 OVERPASS.

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, 10.4 hours before the alert went out and 156 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: 200 J/kg
Mixed-layer CIN: -82 J/kg
Mixed-layer LCL: 850 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 98 m²/s²
0-3 km storm-relative helicity: 108 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

571 
WGUS51 KCLE 252226
FFWCLE
OHC153-260330-
/O.NEW.KCLE.FF.W.0005.200525T2226Z-200526T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Cleveland OH
626 PM EDT Mon May 25 2020

The National Weather Service in Cleveland has issued a

* Flash Flood Warning for...
  Northwestern Summit County in northeastern Ohio...

* Until 1130 PM EDT.

* At 625 PM EDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Up to two inches of rain have 
  already fallen. Expect another half an inch to an inch of 
  additional rainfall. Flash flooding is ongoing or expected to 
  begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar indicated.

  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 flooding include...
  Cuyahoga Falls, Hudson, Macedonia, Broadview Heights, Brecksville,
  Richfield, Boston Heights and Peninsula.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4118 8169 4128 8169 4128 8157 4131 8158
      4132 8153 4132 8148 4125 8148 4118 8151

FLASH FLOOD...RADAR INDICATED

$$

Kahn

1 follow-up statement

572 
WGUS71 KCLE 260125
FFSCLE

Flash Flood Statement
National Weather Service Cleveland OH
925 PM EDT Mon May 25 2020

OHC153-260134-
/O.CAN.KCLE.FF.W.0005.000000T0000Z-200526T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Summit OH-
925 PM EDT Mon May 25 2020

...THE FLASH FLOOD WARNING FOR NORTHWESTERN SUMMIT COUNTY IS
CANCELLED...

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

LAT...LON 4118 8169 4128 8169 4128 8157 4131 8158
      4132 8153 4132 8148 4125 8148 4118 8151

$$

Kahn

The office that day

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

Issued	Product	Office	Counties	Lasted
May 25, 5:11 PM EDT	Special Weather Statement	CLE	Summit	49 min
May 25, 5:43 PM EDT	Areal Flood Advisory	CLE	Summit	3 hr
May 25, 5:59 PM EDT	Special Weather Statement	CLE	Summit	46 min
May 25, 6:33 PM EDT	Areal Flood Advisory	CLE	Geauga, Portage	3 hr
May 25, 7:02 PM EDT	Special Weather Statement	CLE	Crawford, Seneca	43 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.