Alert archive / Ohio / Flash Flood Warnings in 2018

Flash Flood Warning 10, NWS Cleveland, OH

July 26, 2018Lake County, Ohio

NWS Cleveland, OH issued this flash flood warning at Jul 26, 2018, 6:31 PM EDT for Lake 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 26, 2018, 6:31 PM EDT (22:31 UTC)
Expired
Jul 26, 2018, 9:30 PM EDT
In force
3 hr
Issued by
NWS Cleveland, OH
Area
Storm-based polygon
Flood severity
None

County Lake County, OH

The radar

The Cleveland radar (KCLE), 61 km from the middle of the area, began a volume at 22:30 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 (KAGC), launched 12:00Z, 10.5 hours before the alert went out and 172 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 2018-07-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Pittsburgh, PA at 12:00Z on 2018-07-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 70 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
2 J/kg
Mixed-layer CIN
-127 J/kg
Mixed-layer LCL
1343 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
70 m²/s²
0-3 km storm-relative helicity
88 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

002 
WGUS51 KCLE 262231
FFWCLE
OHC085-270130-
/O.NEW.KCLE.FF.W.0010.180726T2231Z-180727T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Cleveland OH
631 PM EDT THU JUL 26 2018

The National Weather Service in Cleveland has issued a

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

* Until 930 PM EDT.

* At 629 PM EDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Up to two inches of rain have 
  already fallen. Flash flooding is expected.  Underpasses in 
  Painesville have begun to fill up with water. Streams and creeks 
  in the county are expected to go out of their banks due to rapid 
  water level rises.

* Some locations that will experience flooding include...
  Painesville, Willowick, Fairport Harbor, Geneva-On-The-Lake,
  Mentor, Willoughby, Eastlake, Madison, Perry, Timberlake, Lakeline,
  Wickliffe, Willoughby Hills, Highland Heights, Mentor-On-The-Lake,
  Kirtland, Mayfield, Gates Mills, North Perry and Kirtland Hills.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4186 8094 4185 8100 4172 8100 4172 8111
      4164 8111 4164 8129 4158 8129 4156 8137
      4157 8148 4163 8149 4160 8156 4162 8157
      4175 8136 4187 8094

$$

Lombardy
1 follow-up statement
361 
WGUS71 KCLE 270003
FFSCLE

Flash Flood Statement
National Weather Service Cleveland OH
803 PM EDT THU JUL 26 2018

OHC085-270130-
/O.CON.KCLE.FF.W.0010.000000T0000Z-180727T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lake OH-
803 PM EDT THU JUL 26 2018

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 930 PM EDT FOR
LAKE COUNTY...

At 800 PM EDT, Doppler radar ongoing showers and thunderstorms in 
the warned area. The intensity of the rainfall has decreased, 
however earlier storms produced upwards of two inches of rain over 
portions of Lake County. The additional rain will exasperate any 
ongoing flooding. Runoff will continue from these and earlier storms 
through sunset. Motorists are advised to avoid flood prone areas 
until the water has receded. 

Some locations that will experience flooding include... 
Painesville, Willowick, Fairport Harbor, Mentor, Willoughby, 
Eastlake, Madison, Perry, Timberlake, Wickliffe, Willoughby Hills, 
Highland Heights, Kirtland, Mayfield, and North Perry.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4186 8094 4185 8100 4172 8100 4172 8111
      4164 8111 4164 8129 4158 8129 4156 8137
      4157 8148 4163 8149 4160 8156 4162 8157
      4175 8136 4187 8094

$$

SJ

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 26, 3:07 PM EDTSpecial Marine WarningCLE83 min
Jul 26, 4:05 PM EDTSpecial Weather StatementCLEOttawa25 min
Jul 26, 4:13 PM EDTSpecial Weather StatementCLEWood62 min
Jul 26, 4:25 PM EDTSpecial Marine WarningCLE2 hr
Jul 26, 4:29 PM EDTSpecial Marine WarningCLE91 min
Jul 26, 4:40 PM EDTSpecial Marine WarningCLE95 min
Jul 26, 4:41 PM EDTSevere Thunderstorm WarningCLESandusky, Wood49 min
Jul 26, 5:06 PM EDTSpecial Weather StatementCLECuyahoga, Lake, Lorain24 min
Jul 26, 5:23 PM EDTSevere Thunderstorm WarningCLEGeauga, Lake67 min
Jul 26, 5:46 PM EDTSpecial Marine WarningCLE89 min
Jul 26, 5:49 PM EDTSevere Thunderstorm WarningCLECuyahoga41 min
Jul 26, 5:53 PM EDTSevere Thunderstorm WarningCLEAshtabula67 min
Jul 26, 6:09 PM EDTSevere Thunderstorm WarningCLEGeauga51 min
Jul 26, 6:20 PM EDTSevere Thunderstorm WarningCLEErie, Huron, Lorain, Sandusky, Seneca85 min
Jul 26, 6:39 PM EDTSpecial Marine WarningCLE96 min
Jul 26, 6:40 PM EDTSevere Thunderstorm WarningCLECrawford, Marion, Morrow, Wyandot95 min
Jul 26, 7:04 PM EDTAreal Flood WarningCLEAshtabula, Cuyahoga, Geauga3 hr
Jul 26, 7:14 PM EDTSevere Thunderstorm WarningCLEAshland, Crawford, Huron, Lorain, Seneca76 min
Jul 26, 7:43 PM EDTSevere Thunderstorm WarningCLEErie, Huron, Lorain43 min

Nearby

Flash Flood Warnings in Ohio, 2018Every flash flood warning in 2018

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.