Alert archive / Ohio / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 255, NWS Cleveland, OH

August 19, 2011Geauga County, Portage County, Summit County, Ohio

NWS Cleveland, OH issued this severe thunderstorm warning at Aug 19, 2011, 3:58 AM EDT for Geauga County, Portage County, Summit County, Ohio. It was in force for 62 min. 7 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
Aug 19, 2011, 3:58 AM EDT (07:58 UTC)
Expired
Aug 19, 2011, 5:00 AM EDT
In force
62 min
Issued by
NWS Cleveland, OH
Area
Storm-based polygon

Counties Geauga County, OH, Portage County, OH, Summit County, OH

The radar

The Cleveland radar (KCLE), 46 km from the middle of the area, began a volume at 08:01 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

TimeReportWhereRemark
Aug 19, 4:00 AM EDTHAIL 1Macedonia, OH
Aug 19, 4:07 AM EDTHAIL 0.75Twinsburg, OH
Aug 19, 4:07 AM EDTHAIL 1Aurora, OH
Aug 19, 4:35 AM EDTHAIL 12 S Chesterland, OH
Aug 19, 4:35 AM EDTHAIL 1Mantua, OH
Aug 19, 4:37 AM EDTHAIL 0.88Middlefield, OH
Aug 19, 4:50 AM EDTHAIL 1.75Mantua, OH

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 00:00Z, 8.0 hours before the alert went out and 148 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°0°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.

585 
WUUS51 KCLE 190758
SVRCLE
OHC055-133-153-190900-
/O.NEW.KCLE.SV.W.0255.110819T0758Z-110819T0900Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
358 AM EDT FRI AUG 19 2011

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  GEAUGA COUNTY IN NORTHEAST OHIO
  NORTHERN PORTAGE COUNTY IN NORTHEAST OHIO
  NORTHEASTERN SUMMIT COUNTY IN NORTHEAST OHIO

* UNTIL 500 AM EDT

* AT 354 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
  LOCATED ALONG A LINE EXTENDING FROM SOUTH RUSSELL TO HUDSON...AND
  MOVING EAST AT 10 MPH.

* LOCATIONS IMPACTED INCLUDE...
  STREETSBORO...
  BURTON...
  MIDDLEFIELD...
  MANTUA...
  GARRETTSVILLE...

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 4114 8100 4123 8156 4135 8149 4135 8139
      4142 8139 4143 8138 4144 8138 4145 8139
      4151 8139 4153 8138 4158 8100
TIME...MOT...LOC 0758Z 266DEG 11KT 4140 8124 4127 8146

$$

LOMBARDY

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 18, 9:10 PM EDTSevere Thunderstorm WarningCLEAshtabula, Geauga, Lake65 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.