Alert archive / Ohio / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 113, NWS Cleveland, OH

August 20, 2009Huron County, Richland County, Ohio

NWS Cleveland, OH issued this severe thunderstorm warning at Aug 20, 2009, 4:16 PM EDT for Huron County, Richland County, Ohio. It was in force for 44 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: Aug 20, 2009, 4:16 PM EDT (20:16 UTC)
Expired: Aug 20, 2009, 5:00 PM EDT
In force: 44 min
Issued by: NWS Cleveland, OH
Area: Storm-based polygon

Counties Huron County, OH, Richland County, OH

The radar

The Cleveland radar (KCLE), 66 km from the middle of the area, began a volume at 20:18 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 20, 4:20 PM EDT	TSTM WND DMG	Willard, OH	COUPLE OF LARGE LIMBS DOWN.

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
Aug 20, 2:41 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 8.3 hours before the alert went out and 201 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: 126 J/kg
Mixed-layer CIN: -43 J/kg
Mixed-layer LCL: 624 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: -89 m²/s²
0-3 km storm-relative helicity: -138 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KCLE 202016
SVRCLE
OHC077-139-202100-
/O.NEW.KCLE.SV.W.0113.090820T2016Z-090820T2100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
416 PM EDT THU AUG 20 2009

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN HURON COUNTY IN NORTH CENTRAL OHIO
  NORTHWESTERN RICHLAND COUNTY IN NORTH CENTRAL OHIO

* UNTIL 500 PM EDT

* AT 416 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH. THIS STORM WAS LOCATED 6 MILES SOUTHWEST OF PLYMOUTH...
  OR 15 MILES NORTHEAST OF BUCYRUS...AND WAS MOVING NORTHEAST AT 35
  MPH.

* LOCATIONS IMPACTED INCLUDE...
  PLYMOUTH...
  WILLARD...
  FITCHVILLE...
  NEW LONDON...

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 4129 8234 4108 8234 4106 8235 4106 8244
      4100 8243 4099 8241 4097 8241 4084 8272
      4099 8273 4100 8284
TIME...MOT...LOC 2016Z 238DEG 32KT 4095 8276

$$

LAPLANTE

1 follow-up statement

000 
WWUS51 KCLE 202035
SVSCLE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
435 PM EDT THU AUG 20 2009

OHC077-139-202100-
/O.CON.KCLE.SV.W.0113.000000T0000Z-090820T2100Z/
RICHLAND OH-HURON OH-
435 PM EDT THU AUG 20 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR HURON AND NORTHWESTERN RICHLAND COUNTIES...

AT 431 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 PLYMOUTH...OR 7 MILES
SOUTHWEST OF FITCHVILLE...MOVING NORTHEAST AT 35 MPH.

LOCATIONS NEAR THE PATH OF THE SEVERE THUNDERSTORM INCLUDE...
FITCHVILLE AND NEW LONDON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
THURSDAY EVENING FOR NORTHERN OHIO AND NORTHWEST PENNSYLVANIA.

&&

LAT...LON 4129 8234 4108 8234 4106 8235 4106 8244
      4100 8243 4099 8241 4097 8241 4084 8272
      4099 8273 4100 8284
TIME...MOT...LOC 2035Z 231DEG 27KT 4106 8258

$$

MITCHELL

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 19, 8:04 PM EDT	Severe Thunderstorm Warning	CLE	Erie, Huron, Lorain	35 min
Aug 19, 8:10 PM EDT	Special Marine Warning	CLE		85 min
Aug 19, 9:51 PM EDT	Flash Flood Warning	CLE	Marion, Morrow	4 hr
Aug 20, 9:16 AM EDT	Small Craft Advisory	CLE		36 hr
Aug 20, 2:31 PM EDT	Special Marine Warning	CLE		89 min
Aug 20, 2:54 PM EDT	Severe Thunderstorm Warning	CLE	Wyandot	26 min
Aug 20, 3:05 PM EDT	Severe Thunderstorm Warning	CLE	Crawford, Seneca	55 min
Aug 20, 3:18 PM EDT	Special Marine Warning	CLE		87 min
Aug 20, 3:35 PM EDT	Severe Thunderstorm Warning	CLE	Crawford	40 min
Aug 20, 3:40 PM EDT	Special Marine Warning	CLE		2 hr
Aug 20, 4:09 PM EDT	Severe Thunderstorm Warning	CLE	Marion, Morrow	51 min
Aug 20, 4:21 PM EDT	Severe Thunderstorm Warning	CLE	Crawford	39 min
Aug 20, 4:33 PM EDT	Severe Thunderstorm Warning	CLE	Ashland, Richland	57 min
Aug 20, 4:35 PM EDT	Severe Thunderstorm Warning	CLE	Lorain	25 min
Aug 20, 4:38 PM EDT	Tornado Warning	CLE	Lorain	18 min
Aug 20, 4:46 PM EDT	Special Marine Warning	CLE		29 min
Aug 20, 4:46 PM EDT	Severe Thunderstorm Warning	CLE	Lorain	44 min
Aug 20, 5:06 PM EDT	Severe Thunderstorm Warning	CLE	Knox	54 min
Aug 20, 5:14 PM EDT	Severe Thunderstorm Warning	CLE	Medina	61 min
Aug 20, 5:38 PM EDT	Special Marine Warning	CLE		112 min
Aug 20, 5:42 PM EDT	Severe Thunderstorm Warning	CLE	Wayne	48 min
Aug 20, 5:47 PM EDT	Severe Thunderstorm Warning	CLE	Summit	43 min
Aug 20, 5:52 PM EDT	Severe Thunderstorm Warning	CLE	Cuyahoga	38 min
Aug 20, 6:00 PM EDT	Severe Thunderstorm Warning	CLE	Geauga, Lake, Portage	60 min
Aug 20, 6:29 PM EDT	Severe Thunderstorm Warning	CLE	Ashtabula, Trumbull	61 min
Aug 20, 6:43 PM EDT	Tornado Warning	CLE	Portage	30 min
Aug 20, 6:56 PM EDT	Tornado Warning	CLE	Stark	29 min
Aug 20, 7:23 PM EDT	Areal Flood Advisory	CLE	Ashtabula, Mahoning, Trumbull	3 hr
Aug 20, 7:26 PM EDT	Severe Thunderstorm Warning	CLE	Trumbull	49 min
Aug 20, 7:29 PM EDT	Special Marine Warning	CLE		91 min

Nearby

Severe Thunderstorm Warnings in Ohio, 2009 Every severe thunderstorm warning in 2009

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.