Alert archive / Wisconsin / Winter Weather Advisories in 2021
Winter Weather Advisory 19, NWS Green Bay, WI
NWS Green Bay, WI issued this winter weather advisory at Dec 20, 2021, 2:10 PM CST for 5 counties in Wisconsin. It took effect at Dec 21, 2021, 8:00 AM CST. It was in force for 7 hr.
The area
The counties it named.
The facts
- Issued
- Dec 20, 2021, 2:10 PM CST (20:10 UTC)
- In effect from
- Dec 21, 2021, 8:00 AM CST
- Expired
- Dec 21, 2021, 2:43 PM CST
- In force
- 7 hr
- Issued by
- NWS Green Bay, WI
Counties Florence County, WI, Forest County, WI, Marinette County, WI, Oneida County, WI, Vilas County, WI
The radar
The Marquette radar (KMQT), 134 km from the middle of the area, began a volume at 20:09 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
Green Bay/Straub, WI (KGRB), launched 12:00Z, 8.2 hours before the alert went out and 150 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
- 825 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 236 m²/s²
- 0-3 km storm-relative helicity
- 398 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
Nearby
Winter Weather Advisories in Wisconsin, 2021Every winter weather advisory in 2021
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.