Alert archive / Ohio / Flash Flood Warnings in 2011

Flash Flood Warning 10, NWS Cleveland, OH

May 14, 2011Cuyahoga County, Lorain County, Ohio

NWS Cleveland, OH issued this flash flood warning at May 14, 2011, 1:59 PM EDT for Cuyahoga County, Lorain County, Ohio. It was in force for 4 hr. 1 report 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 14, 2011, 1:59 PM EDT (17:59 UTC)
Expired: May 14, 2011, 6:00 PM EDT
In force: 4 hr
Issued by: NWS Cleveland, OH
Area: Storm-based polygon
Flood severity: None

Counties Cuyahoga County, OH, Lorain County, OH

The radar

The Cleveland radar (KCLE), 4 km from the middle of the area, began a volume at 18:01 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 14, 5:00 PM EDT	FLASH FLOOD	8 Se Elyria, OH	SEVERAL CREEKS FLOODING AND ROADS CLOSED IN COLUMBIA STATION.

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, 6.0 hours before the alert went out and 182 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: 108 J/kg
Mixed-layer CIN: -35 J/kg
Mixed-layer LCL: 673 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: -6 m²/s²
0-3 km storm-relative helicity: 38 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

478 
WGUS51 KCLE 141759
FFWCLE
OHC035-093-142200-
/O.NEW.KCLE.FF.W.0010.110514T1759Z-110514T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
159 PM EDT SAT MAY 14 2011

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CUYAHOGA COUNTY IN NORTHEAST OHIO
  NORTHEASTERN LORAIN COUNTY IN NORTH CENTRAL OHIO

* UNTIL 600 PM EDT

* AT 156 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE      
  WARNED AREA. RADAR ESTIMATES INDICATE FROM 1.5 TO 2.5 INCHES OF    
  RAIN HAVE FALLEN WITH THE STORM AND ADDITIONAL HEAVY RAIN WILL     
  LIKELY CAUSE FLOODING.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  CLEVELAND...ELYRIA...STRONGSVILLE...CLEVELAND HEIGHTS...EUCLID...
  GRAFTON...LAKEWOOD...NORTH RIDGEVILLE...NORTH ROYALTON...PARMA AND
  WESTLAKE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE QUICKLY FLOODING OF
SMALL CREEKS AND STREAMS. IN URBAN AREAS...FLOODING WILL RAPIDLY
OCCUR ALONG POORLY DRAINED AND LOW LYING HIGHWAYS...STREETS...AND
UNDERPASSES. IF YOU ENCOUNTER A FLOODED ROADWAY... TURN AROUND DON'T
DROWN!

&&

LAT...LON 4161 8150 4143 8150 4130 8164 4127 8185
      4127 8197 4121 8198 4120 8201 4122 8213
      4139 8214 4151 8196 4150 8191 4149 8191
      4150 8170 4158 8158

$$
TK

The office that day

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

Issued	Product	Office	Counties	Lasted
May 13, 8:30 PM EDT	Areal Flood Advisory	CLE	Stark	3 hr
May 13, 9:42 PM EDT	Flash Flood Warning	CLE	Ashland	3 hr
May 14, 12:29 AM EDT	Areal Flood Advisory	CLE	Ashland	6 hr
May 14, 4:19 AM EDT	Flash Flood Watch	CLE	Ashland, Ashtabula, Crawford, Cuyahoga, Erie, Geauga and 22 more	19 hr
May 14, 2:31 PM EDT	Flash Flood Warning	CLE	Hancock, Marion, Wyandot	2 hr
May 14, 3:24 PM EDT	Flash Flood Warning	CLE	Crawford, Huron, Knox, Morrow, Richland, Sandusky and 2 more	4 hr
May 14, 3:49 PM EDT	Flash Flood Warning	CLE	Ashland, Medina, Richland	4 hr
May 14, 4:07 PM EDT	Flash Flood Warning	CLE	Cuyahoga, Geauga, Lake	4 hr
May 14, 4:36 PM EDT	Flash Flood Warning	CLE	Holmes, Knox, Medina, Wayne	4 hr
May 14, 6:00 PM EDT	Areal Flood Warning	CLE	Cuyahoga, Lorain	5 hr
May 14, 6:07 PM EDT	Flash Flood Warning	CLE	Portage, Stark, Summit	4 hr
May 14, 6:22 PM EDT	Flash Flood Warning	CLE	Ashtabula	4 hr
May 14, 7:18 PM EDT	Flash Flood Warning	CLE	Ashtabula, Trumbull	4 hr
May 14, 7:42 PM EDT	Areal Flood Warning	CLE	Ashland, Knox, Richland	4 hr
May 14, 7:50 PM EDT	Areal Flood Warning	CLE	Mahoning	4 hr

Nearby

Flash Flood Warnings in Ohio, 2011 Every flash flood warning in 2011

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.