Alert archive / Ohio / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 101, NWS Cleveland, OH

July 4, 2012Mahoning County, Portage County, Trumbull County, Ohio

NWS Cleveland, OH issued this severe thunderstorm warning at Jul 4, 2012, 12:03 AM EDT for Mahoning County, Portage County, Trumbull County, Ohio. It was in force for 57 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 4, 2012, 12:03 AM EDT (04:03 UTC)
Expired
Jul 4, 2012, 1:00 AM EDT
In force
57 min
Issued by
NWS Cleveland, OH
Area
Storm-based polygon

Counties Mahoning County, OH, Portage County, OH, Trumbull County, OH

The radar

The Pittsburgh radar (KPBZ), 82 km from the middle of the area, began a volume at 04:06 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 4, 12:10 AM EDTTSTM WND DMGRavenna, OHLARGE LIMB DOWN.
Jul 4, 12:15 AM EDTTSTM WND DMG4 S Ravenna, OHLARGE LIMB DOWN IN ROOTSTOWN.

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, 4.1 hours before the alert went out and 99 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 2012-07-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 389 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 2012-07-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 133 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
389 J/kg
Mixed-layer CIN
-103 J/kg
Mixed-layer LCL
1500 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
133 m²/s²
0-3 km storm-relative helicity
172 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

614 
WUUS51 KCLE 040403
SVRCLE
OHC099-133-155-040500-
/O.NEW.KCLE.SV.W.0101.120704T0403Z-120704T0500Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
1203 AM EDT WED JUL 4 2012

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MAHONING COUNTY IN NORTHEAST OHIO
  PORTAGE COUNTY IN NORTHEAST OHIO
  SOUTHWESTERN TRUMBULL COUNTY IN NORTHEAST OHIO

* UNTIL 100 AM EDT

* AT 1154 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 NEAR
  STREETSBORO...AND MOVING SOUTHEAST AT 30 MPH.

* LOCATIONS IMPACTED INCLUDE...
  YOUNGSTOWN...
  NEWTON FALLS...
  LORDSTOWN...
  SEBRING...
  CANFIELD...
  BOARDMAN...
  CAMPBELL...

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 4090 8108 4099 8109 4099 8111 4120 8139
      4125 8139 4133 8128 4111 8052 4091 8053
      4089 8061 4090 8082 4093 8084 4093 8089
      4090 8090
TIME...MOT...LOC 0402Z 304DEG 24KT 4121 8123

$$

LOMBARDY
1 follow-up statement
428 
WWUS51 KCLE 040424
SVSCLE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
1224 AM EDT WED JUL 4 2012

OHC099-133-155-040500-
/O.CON.KCLE.SV.W.0101.000000T0000Z-120704T0500Z/
MAHONING OH-PORTAGE OH-TRUMBULL OH-
1224 AM EDT WED JUL 4 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 100 AM EDT
FOR SOUTHWESTERN TRUMBULL...PORTAGE AND MAHONING COUNTIES...

AT 1218 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED
7 MILES EAST OF RAVENNA...MOVING SOUTHEAST AT 30 MPH.

LOCATIONS NEAR THE PATH OF THE SEVERE THUNDERSTORM INCLUDE...NEWTON
FALLS...TURNPIKE INTERCHANGE...CRAIG BEACH...LORDSTOWN...CANFIELD...
BOARDMAN AND AUSTINTOWN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4090 8108 4099 8109 4099 8111 4118 8135
      4123 8127 4128 8115 4111 8052 4091 8053
      4089 8061 4090 8082 4093 8084 4093 8089
      4090 8090
TIME...MOT...LOC 0423Z 304DEG 24KT 4113 8108

$$

LOMBARDY

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 3, 8:00 PM EDTSevere Thunderstorm WarningCLEAshtabula45 min
Jul 3, 8:27 PM EDTSevere Thunderstorm WarningCLEAshtabula, Geauga, Lake63 min
Jul 3, 8:56 PM EDTSevere Thunderstorm WarningCLETrumbull64 min
Jul 3, 9:17 PM EDTAreal Flood AdvisoryCLEGeauga, Lake3 hr
Jul 3, 10:18 PM EDTSevere Thunderstorm WarningCLEMahoning, Portage, Stark, Summit, Trumbull57 min
Jul 3, 10:57 PM EDTTornado WarningCLEMahoning, Stark27 min
Jul 4, 12:12 AM EDTSevere Thunderstorm WarningCLEPortage, Stark, Summit63 min
Jul 4, 12:45 AM EDTTornado WarningCLEMahoning, Portage45 min
Jul 4, 9:51 AM EDTSpecial Marine WarningCLE84 min
Jul 4, 9:53 AM EDTExcessive Heat WarningCLEHancock, Lucas, Wood11 hr
Jul 4, 6:34 PM EDTSpecial Marine WarningCLE116 min
Jul 4, 7:09 PM EDTSevere Thunderstorm WarningCLEErie, Lucas, Ottawa, Sandusky51 min
Jul 4, 7:57 PM EDTSevere Thunderstorm WarningCLECrawford, Hancock, Marion, Wood, Wyandot48 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.