Alert archive / Illinois / Winter Storm Watches in 2006

Winter Storm Watch 2, NWS Lincoln, IL

November 29, 200635 counties in Illinois

NWS Lincoln, IL issued this winter storm watch at Nov 29, 2006, 9:19 AM CST for 35 counties in Illinois. It took effect at Nov 30, 2006, 12:00 AM CST. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued: Nov 29, 2006, 9:19 AM CST (15:19 UTC)
In effect from: Nov 30, 2006, 12:00 AM CST
Expired: Nov 30, 2006, 3:56 AM CST
In force: 4 hr
Issued by: NWS Lincoln, IL

All 35 counties

Cass County, IL, Champaign County, IL, Christian County, IL, Clark County, IL, Clay County, IL, Coles County, IL, Crawford County, IL, Cumberland County, IL, DeWitt County, IL, Douglas County, IL, Edgar County, IL, Effingham County, IL, Fulton County, IL, Jasper County, IL, Knox County, IL, Lawrence County, IL, Logan County, IL, Macon County, IL, Marshall County, IL, Mason County, IL, McLean County, IL, Menard County, IL, Morgan County, IL, Moultrie County, IL, Peoria County, IL, Piatt County, IL, Richland County, IL, Sangamon County, IL, Schuyler County, IL, Scott County, IL, Shelby County, IL, Stark County, IL, Tazewell County, IL, Vermilion County, IL, Woodford County, IL

The radar

The Lincoln radar (KILX), 42 km from the middle of the area, began a volume at 15:23 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

Lincoln, IL (KILX), launched 12:00Z, 3.3 hours before the alert went out and 46 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: 125 J/kg
Mixed-layer CIN: -88 J/kg
Mixed-layer LCL: 782 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 264 m²/s²
0-3 km storm-relative helicity: 285 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

What forecasters said that day

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

NWS Lincoln, IL wrote its last area forecast discussion before this winter storm watch went out at Nov 29, 3:41 AM CST, 5 hours 38 minutes earlier.

Area forecast discussion, Nov 29, 3:41 AM CST, 5 hours 38 minutes before

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Hazardous weather outlook, Nov 29, 6:01 AM CST, 3 hours 18 minutes before

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The office that day

Everything else NWS Lincoln, IL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Nov 29, 3:13 PM CST	Winter Storm Warning	ILX	Cass, Champaign, Christian, Coles, DeWitt, Douglas and 21 more	45 hr

Nearby

Winter Storm Watches in Illinois, 2006 Every winter storm watch in 2006

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.