Alert archive / Ohio / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 216, NWS Cleveland, OH

August 1, 2011Lake County, Ohio

NWS Cleveland, OH issued this severe thunderstorm warning at Aug 1, 2011, 9:43 AM EDT for Lake County, Ohio. It was in force for 47 min. 12 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: Aug 1, 2011, 9:43 AM EDT (13:43 UTC)
Expired: Aug 1, 2011, 10:30 AM EDT
In force: 47 min
Issued by: NWS Cleveland, OH
Area: Storm-based polygon

County Lake County, OH

The radar

The Cleveland radar (KCLE), 57 km from the middle of the area, began a volume at 13:43 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
Aug 1, 9:59 AM EDT	HAIL 1.25	Willoughby, OH
Aug 1, 10:00 AM EDT	HAIL 1	Mentor, OH
Aug 1, 10:02 AM EDT	HAIL 1.25	Mentor, OH
Aug 1, 10:04 AM EDT	HAIL 0.88	Mentor-On-The-Lake, OH	DIME SIZE HAIL AT INTERSECTION OF ROUTES 2 AND 615.
Aug 1, 10:07 AM EDT	HAIL 1	Willoughby, OH
Aug 1, 10:13 AM EDT	HAIL 1	Willoughby, OH
Aug 1, 10:13 AM EDT	HAIL 2	Mentor, OH
Aug 1, 10:15 AM EDT	HAIL 1.75	Mentor, OH	GOLF BALL SIZE HAIL AND BRANCHES DOWN.
Aug 1, 10:19 AM EDT	HAIL 1	Willoughby, OH
Aug 1, 10:21 AM EDT	HAIL 1	Eastlake, OH
Aug 1, 10:22 AM EDT	HAIL 1.75	W Mentor, OH
Aug 1, 10:27 AM EDT	HAIL 1	Kirtland, OH

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 12:00Z, 1.7 hours before the alert went out and 173 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: 312 J/kg
Mixed-layer CIN: -132 J/kg
Mixed-layer LCL: 1642 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 97 m²/s²
0-3 km storm-relative helicity: 113 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

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

061 
WUUS51 KCLE 011343
SVRCLE
OHC085-011430-
/O.NEW.KCLE.SV.W.0216.110801T1343Z-110801T1430Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
943 AM EDT MON AUG 1 2011

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  LAKE COUNTY IN NORTHEAST OHIO

* UNTIL 1030 AM EDT

* AT 939 AM 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 MENTOR...AND MOVING SOUTHEAST AT 25 MPH.

* LOCATIONS IMPACTED INCLUDE...
  PAINESVILLE...
  EASTLAKE...
  MENTOR...
  WILLOUGHBY...

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 4171 8110 4164 8111 4164 8129 4157 8130
      4157 8148 4165 8149 4169 8143 4177 8129
      4177 8126 4178 8122
TIME...MOT...LOC 1343Z 312DEG 23KT 4176 8141

$$

LAPLANTE

1 follow-up statement

850 
WWUS51 KCLE 011424
SVSCLE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
1024 AM EDT MON AUG 1 2011

OHC085-011430-
/O.CON.KCLE.SV.W.0216.000000T0000Z-110801T1430Z/
LAKE OH-
1024 AM EDT MON AUG 1 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 AM EDT
FOR SOUTHWESTERN LAKE COUNTY...

TRAINED WEATHER SPOTTERS REPORTED A SEVERE THUNDERSTORM PRODUCING 
LARGE HAIL FROM MENTOR TO WILLOUGHBY. GOLF BALL SIZE HAIL HAS BEEN 
REPORTED. THE STORM WILL MOVE ACROSS KIRTLAND AND KIRTLAND HILLS BY 
1030 AM. WINDS GUSTS IN EXCESS OF 60 MPH ARE ALSO POSSIBLE. THE 
STORM WAS MOVING SOUTHEAST AT 25 MPH.


LAT...LON 4174 8133 4171 8127 4164 8115 4164 8129
      4157 8130 4157 8143 4164 8147 4169 8143
TIME...MOT...LOC 1422Z 312DEG 23KT 4159 8116

$$

KOSARIK

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 1, 9:06 AM EDT	Special Marine Warning	CLE		84 min
Aug 1, 10:10 AM EDT	Severe Thunderstorm Warning	CLE	Geauga	36 min
Aug 1, 10:54 AM EDT	Areal Flood Advisory	CLE	Lake	2 hr
Aug 1, 10:54 AM EDT	Special Marine Warning	CLE		96 min
Aug 1, 11:12 AM EDT	Severe Thunderstorm Warning	CLE	Cuyahoga	63 min
Aug 1, 12:13 PM EDT	Severe Thunderstorm Warning	CLE	Cuyahoga, Geauga	62 min
Aug 1, 12:16 PM EDT	Areal Flood Advisory	CLE	Cuyahoga	3 hr
Aug 1, 12:44 PM EDT	Severe Thunderstorm Warning	CLE	Portage	61 min
Aug 1, 12:51 PM EDT	Special Marine Warning	CLE		84 min
Aug 1, 1:04 PM EDT	Severe Thunderstorm Warning	CLE	Geauga, Lake	56 min
Aug 1, 1:19 PM EDT	Severe Thunderstorm Warning	CLE	Lucas, Ottawa, Wood	56 min
Aug 1, 1:32 PM EDT	Severe Thunderstorm Warning	CLE	Erie, Sandusky	58 min
Aug 1, 1:42 PM EDT	Severe Thunderstorm Warning	CLE	Wood	63 min
Aug 1, 1:53 PM EDT	Tornado Warning	CLE	Sandusky, Wood	37 min
Aug 1, 2:01 PM EDT	Special Marine Warning	CLE		44 min
Aug 1, 2:10 PM EDT	Severe Thunderstorm Warning	CLE	Lorain	54 min
Aug 1, 2:16 PM EDT	Severe Thunderstorm Warning	CLE	Medina, Portage, Summit, Wayne	44 min
Aug 1, 2:24 PM EDT	Severe Thunderstorm Warning	CLE	Seneca	66 min
Aug 1, 2:31 PM EDT	Severe Thunderstorm Warning	CLE	Medina	44 min
Aug 1, 2:37 PM EDT	Areal Flood Advisory	CLE	Ottawa, Sandusky, Seneca, Wood	4 hr
Aug 1, 2:57 PM EDT	Severe Thunderstorm Warning	CLE	Medina, Stark, Summit, Wayne	63 min
Aug 1, 3:09 PM EDT	Severe Thunderstorm Warning	CLE	Wyandot	66 min
Aug 1, 4:04 PM EDT	Severe Thunderstorm Warning	CLE	Marion	56 min
Aug 1, 4:15 PM EDT	Severe Thunderstorm Warning	CLE	Wyandot	30 min

Nearby

Severe Thunderstorm Warnings in Ohio, 2011 Every severe thunderstorm warning in 2011

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.