Alert archive / Ohio / Winter Weather Advisories in 2011

Winter Weather Advisory 9, NWS Cleveland, OH

February 24, 20114 counties in Ohio

NWS Cleveland, OH issued this winter weather advisory at Feb 24, 2011, 2:41 PM EST for 4 counties in Ohio. It took effect at Feb 24, 2011, 9:00 PM EST. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued: Feb 24, 2011, 2:41 PM EST (19:41 UTC)
In effect from: Feb 24, 2011, 9:00 PM EST
Expired: Feb 25, 2011, 6:29 AM EST
In force: 9 hr
Issued by: NWS Cleveland, OH

Counties Holmes County, OH, Knox County, OH, Mahoning County, OH, Stark County, OH

The radar

The Cleveland radar (KCLE), 82 km from the middle of the area, began a volume at 19:41 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

Detroit, MI (KDTX), launched 12:00Z, 7.7 hours before the alert went out and 270 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 539 m above ground
0-6 km bulk shear: 67 kt
0-1 km storm-relative helicity: 37 m²/s²
0-3 km storm-relative helicity: 236 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this winter weather 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 winter weather advisory went out at Feb 23, 6:32 PM EST, 20 hours 9 minutes earlier.

Area forecast discussion, Feb 23, 6:32 PM EST, 20 hours 9 minutes before

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Hazardous weather outlook, Feb 23, 3:47 PM EST, 22 hours 54 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
Feb 23, 11:19 PM EST	Winter Weather Advisory	CLE	Ashland, Ashtabula, Crawford, Cuyahoga, Erie, Geauga and 22 more	11 hr
Feb 24, 3:54 AM EST	Winter Storm Warning	CLE	Ashland, Ashtabula, Crawford, Cuyahoga, Erie, Geauga and 22 more	36 hr

Nearby

Winter Weather Advisories in Ohio, 2011 Every winter weather 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.