Alert archive / Ohio / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 180, NWS Cleveland, OH

September 7, 2012Medina County, Ohio

NWS Cleveland, OH issued this severe thunderstorm warning at Sep 7, 2012, 4:46 PM EDT for Medina County, Ohio. It was in force for 29 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: Sep 7, 2012, 4:46 PM EDT (20:46 UTC)
Expired: Sep 7, 2012, 5:15 PM EDT
In force: 29 min
Issued by: NWS Cleveland, OH
Area: Storm-based polygon

County Medina County, OH

The radar

The Cleveland radar (KCLE), 43 km from the middle of the area, began a volume at 20:45 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

Time	Report	Where	Remark
Sep 7, 4:50 PM EDT	HAIL 1	2 E Seville, OH
Sep 7, 5:04 PM EDT	HAIL 0.75	Wadsworth, OH

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.

Issued	Product	Office	Lasted
Sep 7, 3:22 PM EDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 8.8 hours before the alert went out and 161 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1010 J/kg
Mixed-layer CIN: -40 J/kg
Mixed-layer LCL: 1160 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 28 m²/s²
0-3 km storm-relative helicity: 41 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 3.3

Open this sounding in Storm Lab

The text

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

984 
WUUS51 KCLE 072046
SVRCLE
OHC103-072115-
/O.NEW.KCLE.SV.W.0180.120907T2046Z-120907T2115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
446 PM EDT FRI SEP 7 2012

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN MEDINA COUNTY IN NORTHEAST OHIO

* UNTIL 515 PM EDT

* AT 440 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
  MEDINA...AND MOVING EAST AT 25 MPH.

* LOCATIONS IMPACTED INCLUDE...
  WADSWORTH...

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 4099 8190 4099 8197 4117 8196 4118 8168
      4099 8168 4099 8170 4098 8177 4099 8189
TIME...MOT...LOC 2046Z 263DEG 21KT 4110 8182

$$

LAPLANTE

1 follow-up statement

718 
WWUS51 KCLE 072120
SVSCLE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
520 PM EDT FRI SEP 7 2012

OHC103-072130-
/O.EXP.KCLE.SV.W.0180.000000T0000Z-120907T2115Z/
MEDINA OH-
520 PM EDT FRI SEP 7 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MEDINA COUNTY
EXPIRES AT 515 PM EDT...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND NO LONGER
APPEARED TO BE SEVERE.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT FRIDAY
EVENING FOR NORTHEASTERN OHIO AND NORTHWEST PENNSYLVANIA.

LAT...LON 4099 8190 4099 8197 4117 8196 4118 8168
      4099 8168 4099 8170 4098 8177 4099 8189
TIME...MOT...LOC 2046Z 263DEG 21KT 4110 8182

$$

LAPLANTE

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 7, 2:12 PM EDT	Severe Thunderstorm Warning	CLE	Cuyahoga, Medina, Summit	48 min
Sep 7, 2:17 PM EDT	Severe Thunderstorm Warning	CLE	Hancock, Wood	58 min
Sep 7, 2:51 PM EDT	Severe Thunderstorm Warning	CLE	Crawford, Huron, Seneca	54 min
Sep 7, 3:13 PM EDT	Severe Thunderstorm Warning	CLE	Crawford, Marion, Wyandot	62 min
Sep 7, 3:18 PM EDT	Severe Thunderstorm Warning	CLE	Erie, Huron	57 min
Sep 7, 3:28 PM EDT	Special Marine Warning	CLE		77 min
Sep 7, 3:44 PM EDT	Severe Thunderstorm Warning	CLE	Crawford, Huron, Seneca	19 min
Sep 7, 4:26 PM EDT	Gale Warning	CLE		23 hr
Sep 7, 4:29 PM EDT	Severe Thunderstorm Warning	CLE	Summit	46 min
Sep 7, 4:49 PM EDT	Severe Thunderstorm Warning	CLE	Portage	56 min
Sep 7, 5:52 PM EDT	Severe Thunderstorm Warning	CLE	Mahoning, Portage, Stark, Trumbull	53 min
Sep 7, 6:26 PM EDT	Areal Flood Advisory	CLE	Mahoning, Trumbull	81 min

Nearby

Severe Thunderstorm Warnings in Ohio, 2012 Every 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.