Alert archive / Illinois / Winter Storm Watches in 2019

Winter Storm Watch 2, NWS Lincoln, IL

January 17, 201927 counties in Illinois

NWS Lincoln, IL issued this winter storm watch at Jan 17, 2019, 1:59 PM CST for 27 counties in Illinois. It took effect at Jan 18, 2019, 6:00 PM CST. It was in force for .

The area

The counties it named.

The facts

Issued: Jan 17, 2019, 1:59 PM CST (19:59 UTC)
In effect from: Jan 18, 2019, 6:00 PM CST
Expired: Jan 18, 2019, 3:10 AM CST
In force
Issued by: NWS Lincoln, IL

All 27 counties

Cass County, IL, Champaign County, IL, Christian County, IL, Coles County, IL, DeWitt County, IL, Douglas County, IL, Edgar County, IL, Fulton County, IL, Knox 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, 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), 5 km from the middle of the area, began a volume at 20:04 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

Davenport, (KDVN), launched 12:00Z, 8.0 hours before the alert went out and 194 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: 458 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 73 m²/s²
0-3 km storm-relative helicity: 142 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 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 Jan 17, 11:33 AM CST, 2 hours 26 minutes earlier.

Area forecast discussion, Jan 17, 11:33 AM CST, 2 hours 26 minutes before

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Hazardous weather outlook, Jan 17, 11:40 AM CST, 2 hours 19 minutes before

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In the hours before

Local storm report, Jan 17, 10:20 AM CST, 3 hours 39 minutes before

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Special weather statement, Jan 17, 12:41 PM CST, 1 hour 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
Jan 17, 8:57 AM CST	Dense Fog Advisory	ILX	Cass, Champaign, Christian, Clark, Clay, Coles and 21 more	7 hr

Nearby

Winter Storm Watches in Illinois, 2019 Every winter storm watch in 2019

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.