Alert archive / Ohio / Dense Fog Advisories in 2011

Dense Fog Advisory 2, NWS Cleveland, OH

April 26, 201112 counties in Ohio; Erie County, Pennsylvania

NWS Cleveland, OH issued this dense fog advisory at Apr 26, 2011, 4:53 AM EDT for 12 counties in Ohio; Erie County, Pennsylvania. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued: Apr 26, 2011, 4:53 AM EDT (08:53 UTC)
Expired: Apr 26, 2011, 8:32 AM EDT
In force: 4 hr
Issued by: NWS Cleveland, OH

Counties Ashtabula County, OH, Cuyahoga County, OH, Erie County, OH, Hancock County, OH, Huron County, OH, Lake County, OH, Lorain County, OH, Lucas County, OH, Ottawa County, OH, Sandusky County, OH, Seneca County, OH, Wood County, OH, Erie County, PA

The radar

The Cleveland radar (KCLE), 46 km from the middle of the area, began a volume at 08:53 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.

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 8.9 hours before the alert went out and 257 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: 157 J/kg
Mixed-layer CIN: -66 J/kg
Mixed-layer LCL: 968 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 47 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this dense fog advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Cleveland, OH wrote its last area forecast discussion before this dense fog advisory went out at Apr 26, 4:00 AM EDT, 53 minutes earlier.

Area forecast discussion, Apr 26, 4:00 AM EDT, 53 minutes before

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Hazardous weather outlook, Apr 25, 7:51 PM EDT, 9 hours 2 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 25, 8:57 PM EDT	River Flood Warning	CLE	Erie, Huron	49 hr
Apr 25, 9:26 PM EDT	River Flood Warning	CLE	Lake	48 hr
Apr 25, 9:36 PM EDT	Areal Flood Advisory	CLE	Erie, Huron, Lorain	10 hr
Apr 25, 10:26 PM EDT	River Flood Warning	CLE	Ottawa, Sandusky, Wood	61 hr
Apr 25, 10:26 PM EDT	River Flood Warning	CLE	Erie, Lorain	8 hr
Apr 25, 10:26 PM EDT	River Flood Warning	CLE	Hancock	18 hr
Apr 26, 3:51 AM EDT	River Flood Warning	CLE	Seneca	32 hr
Apr 26, 5:29 AM EDT	River Flood Warning	CLE	Trumbull	40 hr
Apr 26, 9:24 AM EDT	River Flood Warning	CLE	Trumbull	37 hr
Apr 26, 3:19 PM EDT	Wind Advisory	CLE	Ashland, Crawford, Cuyahoga, Erie, Hancock, Holmes and 14 more	7 hr

Nearby

Dense Fog Advisories in Ohio, 2011 Dense Fog Advisories in Pennsylvania, 2011 Every dense fog advisory 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.