Alert archive / Ohio / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 7, NWS Cleveland, OH

May 11, 2015Knox County, Ohio

NWS Cleveland, OH issued this severe thunderstorm warning at May 11, 2015, 5:25 PM EDT for Knox County, Ohio. It was in force for 36 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, 5:25 PM EDT (21:25 UTC)
Expired
May 11, 2015, 6:01 PM EDT
In force
36 min
Issued by
NWS Cleveland, OH
Area
Storm-based polygon
Hail
0.75 in
Wind
70.0 mph

County Knox County, OH

The radar

The Cleveland radar (KCLE), 130 km from the middle of the area, began a volume at 21:27 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, 5:48 PM EDTTSTM WND DMGMartinsburg, OHKNOX COUNTY SHERIFF REPORTED SEVERAL TREES DOWN IN AND NEAR THE TOWN OF MARTINSBURG. SOME TREES WERE LAYING ON POWER LINES AND THE POWER IS OUT IN THE TOWN OF MARTINSBURG.

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, 1:14 PM EDTTornado WatchSPC7 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 9.4 hours before the alert went out and 150 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, Cncnati-Daytn, OH at 12:00Z on 2015-05-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Cncnati-Daytn, OH at 12:00Z on 2015-05-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 66 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1744 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
66 m²/s²
0-3 km storm-relative helicity
118 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.

963 
WUUS51 KCLE 112125
SVRCLE
OHC083-112215-
/O.NEW.KCLE.SV.W.0007.150511T2125Z-150511T2215Z/

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

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  KNOX COUNTY IN NORTH CENTRAL OHIO...

* UNTIL 615 PM EDT

* AT 521 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED 7 MILES WEST OF
  UTICA...AND MOVING NORTHEAST AT 60 MPH.

  HAZARD...70 MPH WIND GUSTS.

  SOURCE...RADAR INDICATED.

  IMPACT...EXPECT CONSIDERABLE TREE DAMAGE. DAMAGE IS LIKELY TO
           MOBILE HOMES...ROOFS AND OUTBUILDINGS.

* LOCATIONS IMPACTED INCLUDE...
  MOUNT VERNON...FREDERICKTOWN...GAMBIER...DANVILLE...MARTINSBURG AND
  GANN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

THIS IS A DANGEROUS SITUATION. THIS STORM IS PRODUCING WIDESPREAD 
WIND DAMAGE ACROSS FRANKLIN COUNTY. SEEK SHELTER NOW INSIDE A STURDY 
STRUCTURE AND STAY AWAY FROM WINDOWS.

&&

LAT...LON 4024 8247 4027 8248 4027 8267 4028 8275
      4035 8275 4034 8265 4036 8264 4055 8264
      4055 8237 4057 8218 4024 8220
TIME...MOT...LOC 2125Z 230DEG 54KT 4028 8250

HAIL...<.75IN
WIND...70MPH

$$
3 follow-up statements
408 
WWUS51 KCLE 112139
SVSCLE

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

OHC083-112215-
/O.CON.KCLE.SV.W.0007.000000T0000Z-150511T2215Z/
KNOX OH-
539 PM EDT MON MAY 11 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR KNOX COUNTY
UNTIL 615 PM EDT...

AT 532 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED 5 MILES NORTH OF
UTICA...AND MOVING NORTHEAST AT 60 MPH.

HAZARD...60 MPH WIND GUSTS.

SOURCE...RADAR INDICATED.

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

LOCATIONS IMPACTED INCLUDE...
DANVILLE AND GANN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4024 8247 4027 8248 4027 8257 4054 8261
      4055 8237 4057 8218 4024 8220
TIME...MOT...LOC 2139Z 230DEG 54KT 4037 8233

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

$$
011 
WWUS51 KCLE 112155
SVSCLE

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

OHC083-112215-
/O.CON.KCLE.SV.W.0007.000000T0000Z-150511T2215Z/
KNOX OH-
555 PM EDT MON MAY 11 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR KNOX COUNTY
UNTIL 615 PM EDT...

AT 548 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED 5 MILES SOUTH OF
DANVILLE...AND MOVING NORTHEAST AT 60 MPH.

HAZARD...60 MPH WIND GUSTS.

SOURCE...RADAR INDICATED.

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

LOCATIONS IMPACTED INCLUDE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4024 8247 4027 8248 4027 8257 4054 8261
      4055 8237 4057 8218 4024 8220
TIME...MOT...LOC 2156Z 230DEG 54KT 4045 8214

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

$$
267 
WWUS51 KCLE 112201
SVSCLE

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

OHC083-112211-
/O.CAN.KCLE.SV.W.0007.000000T0000Z-150511T2215Z/
KNOX OH-
601 PM EDT MON MAY 11 2015

...THE SEVERE THUNDERSTORM WARNING FOR KNOX COUNTY IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.

LAT...LON 4024 8247 4027 8248 4027 8257 4054 8261
      4055 8237 4057 8218 4024 8220
TIME...MOT...LOC 2201Z 230DEG 54KT 4050 8206

$$

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, 5:38 PM EDTSpecial Marine WarningCLE112 min
May 11, 6:48 PM EDTSevere Thunderstorm WarningCLECuyahoga, Medina, Summit42 min
May 11, 7:02 PM EDTSevere Thunderstorm WarningCLEGeauga, Portage58 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.