Alert archive / Illinois / Winter Storm Watches in 2017
Winter Storm Watch 1, NWS Lincoln, IL
NWS Lincoln, IL issued this winter storm watch at Jan 12, 2017, 4:13 AM CST for 35 counties in Illinois. It took effect at Jan 13, 2017, 12:00 PM CST. It was in force for 27 hr.
The area
The counties it named.
The facts
- Issued
- Jan 12, 2017, 4:13 AM CST (10:13 UTC)
- In effect from
- Jan 13, 2017, 12:00 PM CST
- Expired
- Jan 14, 2017, 3:19 PM CST
- In force
- 27 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 10:14 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 00:00Z, 10.2 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.
- Mixed-layer CAPE
- 48 J/kg
- Mixed-layer CIN
- -70 J/kg
- Mixed-layer LCL
- 735 m above ground
- 0-6 km bulk shear
- 78 kt
- 0-1 km storm-relative helicity
- 630 m²/s²
- 0-3 km storm-relative helicity
- 688 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 11, 7:36 PM CST | Special Weather Statement | ILX | McLean | 39 min |
| Jan 11, 9:14 PM CST | Special Weather Statement | ILX | Champaign, Vermilion | 61 min |
| Jan 12, 4:00 AM CST | Freezing Rain Advisory | ILX | Cass, Fulton, Knox, Logan, McLean, Marshall and 10 more | 5 hr |
Nearby
Winter Storm Watches in Illinois, 2017Every winter storm watch in 2017
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.