Alert archive / Ohio / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 9, NWS Cleveland, OH

May 11, 2015Geauga County, Portage County, Ohio

NWS Cleveland, OH issued this severe thunderstorm warning at May 11, 2015, 7:02 PM EDT for Geauga County, Portage County, Ohio. It was in force for 58 min. 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 11, 2015, 7:02 PM EDT (23:02 UTC)
Expired
May 11, 2015, 8:00 PM EDT
In force
58 min
Issued by
NWS Cleveland, OH
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Geauga County, OH, Portage County, OH

The radar

The Cleveland radar (KCLE), 54 km from the middle of the area, began a volume at 22:55 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
May 11, 7:10 PM EDTTSTM WND DMGBainbridge, OHBAINBRIDGE POLICE REPORTED A COUPLE DOWNED TREES IN BAINBRIDGE TOWNSHIP.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
May 11, 5:47 PM EDTSevere Thunderstorm WatchSPC4 hr

The nearest sounding before it

Pittsburgh, PA (KAGC), launched 12:00Z, 11.0 hours before the alert went out and 147 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 2015-05-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 30 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 2015-05-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 56 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
30 J/kg
Mixed-layer CIN
-78 J/kg
Mixed-layer LCL
1342 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
56 m²/s²
0-3 km storm-relative helicity
73 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.

366 
WUUS51 KCLE 112302
SVRCLE
OHC055-133-120000-
/O.NEW.KCLE.SV.W.0009.150511T2302Z-150512T0000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
702 PM EDT MON MAY 11 2015

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

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

* UNTIL 800 PM EDT

* AT 700 PM EDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM SOLON TO TWINSBURG TO HUDSON...AND MOVING EAST AT 40
  MPH.

  HAZARD...60 MPH WIND GUSTS AND PENNY SIZE HAIL.

  SOURCE...RADAR INDICATED.

  IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES.

* LOCATIONS IMPACTED INCLUDE...
  RAVENNA...CHARDON...KENT...STREETSBORO...CHESTERLAND...SOUTH
  RUSSELL...MANTUA...BURTON...GARRETTSVILLE...MIDDLEFIELD...AURORA...
  SUGAR BUSH KNOLLS...BAINBRIDGE...BRADY LAKE...HIRAM...AQUILLA AND
  WINDHAM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

SMALL HAIL...DAMAGING WINDS AND CONTINUOUS CLOUD TO GROUND LIGHTNING
IS OCCURRING WITH THESE STORMS. MOVE INDOORS IMMEDIATELY. LIGHTNING
KILLS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO
BE STRUCK BY LIGHTNING.

&&

LAT...LON 4109 8101 4108 8101 4114 8139 4142 8139
      4143 8138 4145 8139 4157 8139 4157 8130
      4164 8129 4164 8111 4171 8110 4171 8100
TIME...MOT...LOC 2302Z 276DEG 36KT 4140 8144 4131 8138
          4122 8143

HAIL...0.75IN
WIND...60MPH

$$

KEC
2 follow-up statements
509 
WWUS51 KCLE 112336
SVSCLE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
736 PM EDT MON MAY 11 2015

OHC133-112346-
/O.CAN.KCLE.SV.W.0009.000000T0000Z-150512T0000Z/
PORTAGE OH-
736 PM EDT MON MAY 11 2015

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN PORTAGE COUNTY IS
CANCELLED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE 
WARNED AREA.

LAT...LON 4171 8100 4140 8100 4141 8121 4144 8131
      4151 8134 4157 8130 4164 8129 4164 8111
      4171 8110
TIME...MOT...LOC 2336Z 236DEG 35KT 4173 8104 4163 8099
          4153 8101

$$

OHC055-120000-
/O.CON.KCLE.SV.W.0009.000000T0000Z-150512T0000Z/
GEAUGA OH-
736 PM EDT MON MAY 11 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR GEAUGA COUNTY
UNTIL 800 PM EDT...

AT 734 PM EDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM MADISON TO 10 MILES NORTHWEST OF ORWELL TO
MIDDLEFIELD...AND MOVING NORTHEAST AT 40 MPH.

HAZARD...60 MPH WIND GUSTS.

SOURCE...RADAR INDICATED.

IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES.

LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS OF EXTREME NORTHEASTERN GEAUGA COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4171 8100 4140 8100 4141 8121 4144 8131
      4151 8134 4157 8130 4164 8129 4164 8111
      4171 8110
TIME...MOT...LOC 2336Z 236DEG 35KT 4173 8104 4163 8099
          4153 8101

HAIL...<.75IN
WIND...60MPH

$$

KEC
159 
WWUS51 KCLE 112353
SVSCLE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
753 PM EDT MON MAY 11 2015

OHC055-120003-
/O.EXP.KCLE.SV.W.0009.000000T0000Z-150512T0000Z/
GEAUGA OH-
753 PM EDT MON MAY 11 2015

...THE SEVERE THUNDERSTORM WARNING FOR GEAUGA COUNTY WILL EXPIRE AT
800 PM EDT...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE
WARNED AREA.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN CLEVELAND.

LAT...LON 4171 8100 4140 8100 4141 8121 4144 8131
      4151 8134 4157 8130 4164 8129 4164 8111
      4171 8110
TIME...MOT...LOC 2353Z 236DEG 35KT 4182 8086 4172 8081
          4162 8083

$$

KEC

The office that day

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

IssuedProductOfficeCountiesLasted
May 11, 3:34 PM EDTSevere Thunderstorm WarningCLELucas, Wood41 min
May 11, 4:09 PM EDTSpecial Marine WarningCLE2 hr
May 11, 5:25 PM EDTSevere Thunderstorm WarningCLEKnox36 min
May 11, 5:38 PM EDTSpecial Marine WarningCLE112 min
May 11, 6:48 PM EDTSevere Thunderstorm WarningCLECuyahoga, Medina, Summit42 min
May 11, 7:15 PM EDTSevere Thunderstorm WarningCLEMahoning, Portage, Stark60 min
May 11, 7:19 PM EDTSevere Thunderstorm WarningCLELake41 min
May 11, 7:29 PM EDTSevere Thunderstorm WarningCLEAshtabula46 min
May 11, 7:30 PM EDTSpecial Marine WarningCLE75 min
May 11, 7:46 PM EDTSevere Thunderstorm WarningCLETrumbull43 min

Nearby

Severe Thunderstorm Warnings in Ohio, 2015Every severe thunderstorm warning in 2015

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.