Alert archive / Ohio / Flash Flood Warnings in 2011

Flash Flood Warning 17, NWS Cleveland, OH

May 14, 2011Ashtabula County, Ohio

NWS Cleveland, OH issued this flash flood warning at May 14, 2011, 6:22 PM EDT for Ashtabula County, Ohio. It was in force for 4 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
May 14, 2011, 6:22 PM EDT (22:22 UTC)
Expired
May 14, 2011, 10:30 PM EDT
In force
4 hr
Issued by
NWS Cleveland, OH
Area
Storm-based polygon
Flood severity
None

County Ashtabula County, OH

The radar

The Cleveland radar (KCLE), 104 km from the middle of the area, began a volume at 22:24 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, 10.4 hours before the alert went out and 169 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-pSkew-T log-p diagram, Pittsburgh, PA at 12:00Z on 2011-05-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 108 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Pittsburgh, PA at 12:00Z on 2011-05-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -6 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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.

069 
WGUS51 KCLE 142222
FFWCLE
OHC007-150230-
/O.NEW.KCLE.FF.W.0017.110514T2222Z-110515T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  ASHTABULA COUNTY IN NORTHEAST OHIO

* UNTIL 1030 PM EDT

* AT 620 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE      
  WARNED AREA. THE THUNDERSTORMS WERE MOVING WEST TO EAST. RAINFALL  
  AMOUNTS COULD BE UP TO TWO INCHES IN AN HOUR. THE GROUND IS        
  SOMEWHAT SATURATED FROM RECENT RAINFALL. 

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  ASHTABULA...JEFFERSON...ANDOVER...CONNEAUT...GENEVA AND NORTH
  KINGSVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

VERY HEAVY RAINFALL IS POSSIBLE IN THE WARNED AREA. EXCESSIVE RUNOFF
WILL CAUSE FLOODING OF SMALL CREEKS...STREAMS...AND DRAINAGE DITCHES
ACROSS THE WARNING AREA. IN URBAN AREAS...FLOODING IS LIKELY ALONG
POORLY DRAINED AND LOW LYING HIGHWAYS...STREETS...AND UNDERPASSES. BE
ALERT FOR FLOODED ROADS. TURN AROUND...DON'T DROWN!

&&

LAT...LON 4157 8053 4157 8100 4185 8101 4187 8095
      4188 8096 4187 8091 4188 8092 4192 8080
      4194 8066 4195 8065 4194 8062 4196 8061
      4196 8057 4198 8052

$$

KIELTYKA
1 follow-up statement
840 
WGUS71 KCLE 150230
FFSCLE

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
1030 PM EDT SAT MAY 14 2011

OHC007-150242-
/O.EXP.KCLE.FF.W.0017.000000T0000Z-110515T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ASHTABULA OH-
1030 PM EDT SAT MAY 14 2011

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR ASHTABULA COUNTY
WILL BE ALLOWED TO EXPIRE AT 1030 PM EDT...

EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS
AND CREEKS IN THE WARNED AREA HAVE RECEDED OR WERE BEGINNING TO
RECEDE...ENDING THE FLOOD THREAT. IF FLOODING HAS BEEN OBSERVED...
PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY.

A FEW AREAS OF FLOODING OCCURRED ON STATE ROUTE 46 NEAR THE TRUMBULL 
COUNTY LINE. ANY HIGH WATER WILL SLOWLY RECEDE.

LAT...LON 4157 8053 4157 8100 4185 8101 4187 8095
      4188 8096 4187 8091 4188 8092 4192 8080
      4194 8066 4195 8065 4194 8062 4196 8061
      4196 8057 4198 8052

$$

KIELTYKA

The office that day

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

IssuedProductOfficeCountiesLasted
May 13, 8:30 PM EDTAreal Flood AdvisoryCLEStark3 hr
May 13, 9:42 PM EDTFlash Flood WarningCLEAshland3 hr
May 14, 12:29 AM EDTAreal Flood AdvisoryCLEAshland6 hr
May 14, 4:19 AM EDTFlash Flood WatchCLEAshland, Ashtabula, Crawford, Cuyahoga, Erie, Geauga and 22 more19 hr
May 14, 1:59 PM EDTFlash Flood WarningCLECuyahoga, Lorain4 hr
May 14, 2:31 PM EDTFlash Flood WarningCLEHancock, Marion, Wyandot2 hr
May 14, 3:24 PM EDTFlash Flood WarningCLECrawford, Huron, Knox, Morrow, Richland, Sandusky and 2 more4 hr
May 14, 3:49 PM EDTFlash Flood WarningCLEAshland, Medina, Richland4 hr
May 14, 4:07 PM EDTFlash Flood WarningCLECuyahoga, Geauga, Lake4 hr
May 14, 4:36 PM EDTFlash Flood WarningCLEHolmes, Knox, Medina, Wayne4 hr
May 14, 6:00 PM EDTAreal Flood WarningCLECuyahoga, Lorain5 hr
May 14, 6:07 PM EDTFlash Flood WarningCLEPortage, Stark, Summit4 hr
May 14, 7:18 PM EDTFlash Flood WarningCLEAshtabula, Trumbull4 hr
May 14, 7:42 PM EDTAreal Flood WarningCLEAshland, Knox, Richland4 hr
May 14, 7:50 PM EDTAreal Flood WarningCLEMahoning4 hr

Nearby

Flash Flood Warnings in Ohio, 2011Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.