Alert archive / Ohio / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 127, NWS Cleveland, OH

July 18, 2012Marion County, Wyandot County, Ohio

NWS Cleveland, OH issued this severe thunderstorm warning at Jul 18, 2012, 2:49 PM EDT for Marion County, Wyandot County, Ohio. It was in force for 56 min. 2 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
Jul 18, 2012, 2:49 PM EDT (18:49 UTC)
Expired
Jul 18, 2012, 3:45 PM EDT
In force
56 min
Issued by
NWS Cleveland, OH
Area
Storm-based polygon

Counties Marion County, OH, Wyandot County, OH

The radar

The Cleveland radar (KCLE), 141 km from the middle of the area, began a volume at 18:50 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
Jul 18, 3:00 PM EDTTSTM WND DMGMorral, OHSOME LIMBS DOWN.
Jul 18, 3:30 PM EDTTSTM WND DMGMarion, OHTOP PORTION OF A POWER POLE SNAPPED.

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
Jul 18, 1:16 PM EDTSevere Thunderstorm WatchSPC8 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 6.8 hours before the alert went out and 146 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 2012-07-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2497 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, Cncnati-Daytn, OH at 12:00Z on 2012-07-18The 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
2497 J/kg
Mixed-layer CIN
-63 J/kg
Mixed-layer LCL
1093 m above ground
0-6 km bulk shear
4 kt
0-1 km storm-relative helicity
-23 m²/s²
0-3 km storm-relative helicity
-5 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.

617 
WUUS51 KCLE 181849
SVRCLE
OHC101-175-181945-
/O.NEW.KCLE.SV.W.0127.120718T1849Z-120718T1945Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
249 PM EDT WED JUL 18 2012

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MARION COUNTY IN NORTH CENTRAL OHIO
  WYANDOT COUNTY IN NORTHWEST OHIO

* UNTIL 345 PM EDT

* AT 246 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 8 MILES
  NORTHWEST OF MARSEILLES...AND MOVING SOUTHEAST AT 25 MPH.

* LOCATIONS IMPACTED INCLUDE...
  SYCAMORE...
  UPPER SANDUSKY...
  MARION...
  MARSEILLES...
  LA RUE...
  MORRAL...

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 4045 8325 4051 8325 4051 8342 4068 8343
      4070 8350 4082 8351 4090 8352 4091 8348
      4099 8345 4100 8312 4070 8311 4070 8285
      4065 8287 4064 8296 4049 8296 4049 8301
      4043 8302
TIME...MOT...LOC 1849Z 309DEG 20KT 4075 8350

$$

SJAMISON
2 follow-up statements
227 
WWUS51 KCLE 181917
SVSCLE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
317 PM EDT WED JUL 18 2012

OHC101-175-181945-
/O.CON.KCLE.SV.W.0127.000000T0000Z-120718T1945Z/
WYANDOT OH-MARION OH-
317 PM EDT WED JUL 18 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM EDT
FOR MARION AND WYANDOT COUNTIES...

AT 314 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR MORRAL...OR 9 MILES
SOUTH OF UPPER SANDUSKY...MOVING SOUTHEAST AT 25 MPH.

LOCATIONS NEAR THE PATH OF THE SEVERE THUNDERSTORM INCLUDE...GREEN
CAMP...MARION AND CALEDONIA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT
WEDNESDAY EVENING FOR NORTHERN OHIO.

&&

LAT...LON 4045 8325 4051 8325 4051 8342 4068 8343
      4070 8350 4082 8351 4090 8352 4091 8348
      4099 8345 4100 8312 4070 8311 4070 8285
      4065 8287 4064 8296 4049 8296 4049 8301
      4043 8302
TIME...MOT...LOC 1917Z 309DEG 20KT 4070 8320

$$

SJAMISON
992 
WWUS51 KCLE 181937
SVSCLE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
337 PM EDT WED JUL 18 2012

OHC101-175-181947-
/O.EXP.KCLE.SV.W.0127.000000T0000Z-120718T1945Z/
WYANDOT OH-MARION OH-
337 PM EDT WED JUL 18 2012

...THE SEVERE THUNDERSTORM WARNING FOR MARION AND WYANDOT COUNTIES
EXPIRES AT 345 PM EDT...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND NO LONGER
APPEARED TO BE SEVERE...HOWEVER HEAVY RAIN IS STILL POSSIBLE WITH
THESE THUNDERSTORMS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT
WEDNESDAY EVENING FOR NORTHERN OHIO.

LAT...LON 4045 8325 4051 8325 4051 8342 4068 8343
      4070 8350 4082 8351 4090 8352 4091 8348
      4099 8345 4100 8312 4070 8311 4070 8285
      4065 8287 4064 8296 4049 8296 4049 8301
      4043 8302
TIME...MOT...LOC 1937Z 309DEG 20KT 4063 8309

$$

SJAMISON

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 18, 1:18 PM EDTSevere Thunderstorm WarningCLEAshland, Holmes, Wayne42 min
Jul 18, 3:10 PM EDTSevere Thunderstorm WarningCLEStark36 min
Jul 18, 3:14 PM EDTSevere Thunderstorm WarningCLEMahoning46 min
Jul 18, 3:29 PM EDTSevere Thunderstorm WarningCLEMorrow34 min
Jul 18, 6:33 PM EDTSevere Thunderstorm WarningCLEStark21 min

Nearby

Severe Thunderstorm Warnings in Ohio, 2012Every severe thunderstorm warning in 2012

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.