Alert archive / Illinois / Winter Storm Warnings in 2016
Winter Storm Warning 5, NWS Chicago, IL
NWS Chicago, IL issued this winter storm warning at Dec 10, 2016, 10:55 AM CST for 12 counties in Illinois; Lake County, Porter County, Indiana. It took effect at Dec 10, 2016, 3:00 PM CST. It was in force for 33 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Dec 10, 2016, 10:55 AM CST (16:55 UTC)
- In effect from
- Dec 10, 2016, 3:00 PM CST
- Expired
- Dec 12, 2016, 12:00 AM CST
- In force
- 33 hr
- Issued by
- NWS Chicago, IL
Counties Boone County, IL, DeKalb County, IL, DuPage County, IL, Grundy County, IL, Kane County, IL, Kendall County, IL, Lake County, IL, LaSalle County, IL, Lee County, IL, McHenry County, IL, Ogle County, IL, Winnebago County, IL, Lake County, IN, Porter County, IN
The radar
The Chicago radar (KLOT), 42 km from the middle of the area, began a volume at 16:58 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, 4.9 hours before the alert went out and 172 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 915 m above ground
- 0-6 km bulk shear
- 98 kt
- 0-1 km storm-relative helicity
- 83 m²/s²
- 0-3 km storm-relative helicity
- 238 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The office that day
Everything else NWS Chicago, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 10, 3:50 AM CST | Winter Weather Advisory | LOT | Boone, DeKalb, DuPage, Grundy, Kane, Kendall and 6 more | 7 hr |
| Dec 10, 10:55 AM CST | Winter Weather Advisory | LOT | Kankakee | 37 hr |
| Dec 10, 3:05 PM CST | Small Craft Advisory | LOT | 47 hr |
Nearby
Winter Storm Warnings in Illinois, 2016Winter Storm Warnings in Indiana, 2016Every winter storm warning in 2016
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.