Alert archive / Ohio / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 253, NWS Cleveland, OH

August 18, 2011Ashtabula County, Geauga County, Lake County, Ohio

NWS Cleveland, OH issued this severe thunderstorm warning at Aug 18, 2011, 9:10 PM EDT for Ashtabula County, Geauga County, Lake County, Ohio. It was in force for 65 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 18, 2011, 9:10 PM EDT (01:10 UTC)
Expired
Aug 18, 2011, 10:15 PM EDT
In force
65 min
Issued by
NWS Cleveland, OH
Area
Storm-based polygon

Counties Ashtabula County, OH, Geauga County, OH, Lake County, OH

The radar

The Cleveland radar (KCLE), 85 km from the middle of the area, began a volume at 01:11 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 00:00Z, 1.2 hours before the alert went out and 170 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 00:00Z on 2011-08-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 201 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 00:00Z on 2011-08-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 23 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
201 J/kg
Mixed-layer CIN
-43 J/kg
Mixed-layer LCL
1889 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
23 m²/s²
0-3 km storm-relative helicity
29 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.

979 
WUUS51 KCLE 190110
SVRCLE
OHC007-055-085-190215-
/O.NEW.KCLE.SV.W.0253.110819T0110Z-110819T0215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
910 PM EDT THU AUG 18 2011

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ASHTABULA COUNTY IN NORTHEAST OHIO
  NORTHERN GEAUGA COUNTY IN NORTHEAST OHIO
  LAKE COUNTY IN NORTHEAST OHIO

* UNTIL 1015 PM EDT

* AT 906 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
  STORM WAS LOCATED NEAR MADISON...AND MOVING EAST AT 15 MPH.

* LOCATIONS IMPACTED INCLUDE...
  ASHTABULA...
  JEFFERSON...
  GENEVA...
  NORTH KINGSVILLE...
  CONNEAUT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. SEEK SHELTER INSIDE NOW AND STAY AWAY FROM
WINDOWS.

&&

PLEASE REPORT HAIL AND STRONG WINDS TO THE NATIONAL WEATHER SERVICE
BY CALLING TOLL FREE...877-633-6772...WHEN YOU CAN DO SO SAFELY.

LAT...LON 4163 8052 4157 8149 4164 8150 4169 8144
      4177 8129 4177 8126 4186 8102 4188 8090
      4192 8080 4193 8072 4197 8060 4197 8053
TIME...MOT...LOC 0110Z 278DEG 12KT 4184 8104

$$

DJB
1 follow-up statement
272 
WWUS51 KCLE 190157
SVSCLE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
957 PM EDT THU AUG 18 2011

OHC007-055-085-190215-
/O.CON.KCLE.SV.W.0253.000000T0000Z-110819T0215Z/
GEAUGA OH-LAKE OH-ASHTABULA OH-
957 PM EDT THU AUG 18 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM EDT
FOR ASHTABULA...NORTHEASTERN LAKE AND NORTHEASTERN GEAUGA COUNTIES...

AT 953 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER
SIZE HAIL. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 11
MILES SOUTHEAST OF CONNEAUT TO 12 MILES SOUTH OF MADISON...MOVING
EAST AT 25 MPH.

LOCATIONS NEAR THE PATH OF SEVERE THUNDERSTORMS INCLUDE...ROAMING
SHORES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. SEEK SHELTER INSIDE NOW AND STAY AWAY FROM
WINDOWS.

&&

LAT...LON 4163 8052 4160 8124 4176 8123 4186 8102
      4188 8090 4192 8080 4193 8072 4197 8060
      4197 8053
TIME...MOT...LOC 0157Z 280DEG 21KT 4177 8045 4159 8105

$$

SCHULER

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 18, 8:06 PM EDTSpecial Marine WarningCLE114 min
Aug 18, 8:53 PM EDTSevere Thunderstorm WarningCLECuyahoga, Geauga67 min
Aug 19, 3:58 AM EDTSevere Thunderstorm WarningCLEGeauga, Portage, Summit62 min
Aug 19, 4:43 AM EDTFlash Flood WarningCLEGeauga107 min
Aug 19, 5:00 AM EDTSevere Thunderstorm WarningCLEAshtabula, Geauga, Portage, Trumbull60 min
Aug 19, 5:57 AM EDTSevere Thunderstorm WarningCLEMahoning, Portage, Trumbull63 min
Aug 19, 2:30 PM EDTFlash Flood WarningCLEKnox87 min

Nearby

Severe Thunderstorm Warnings in Ohio, 2011Every severe thunderstorm 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.