Alert archive / Wisconsin / Winter Weather Advisories in 2018

Winter Weather Advisory 2, NWS La Crosse, WI

January 14, 201813 counties in Wisconsin; 8 counties in Iowa; 7 counties in Minnesota

NWS La Crosse, WI issued this winter weather advisory at Jan 14, 2018, 3:51 AM CST for 13 counties in Wisconsin; 8 counties in Iowa; 7 counties in Minnesota. It took effect at Jan 14, 2018, 6:00 PM CST. It was in force for 30 hr.

The area

The counties it named.

The facts

Issued: Jan 14, 2018, 3:51 AM CST (09:51 UTC)
In effect from: Jan 14, 2018, 6:00 PM CST
Expired: Jan 16, 2018, 12:00 AM CST
In force: 30 hr
Issued by: NWS La Crosse, WI

All 28 counties

Allamakee County, IA, Chickasaw County, IA, Clayton County, IA, Fayette County, IA, Floyd County, IA, Howard County, IA, Mitchell County, IA, Winneshiek County, IA, Dodge County, MN, Fillmore County, MN, Houston County, MN, Mower County, MN, Olmsted County, MN, Wabasha County, MN, Winona County, MN, Adams County, WI, Buffalo County, WI, Clark County, WI, Crawford County, WI, Grant County, WI, Jackson County, WI, Juneau County, WI, La Crosse County, WI, Monroe County, WI, Richland County, WI, Taylor County, WI, Trempealeau County, WI, Vernon County, WI

The radar

The La Crosse radar (KARX), 27 km from the middle of the area, began a volume at 09:50 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 00:00Z, 9.9 hours before the alert went out and 284 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: 1319 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 6 m²/s²
0-3 km storm-relative helicity: 72 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 weather advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS La Crosse, WI wrote its last area forecast discussion before this winter weather advisory went out at Jan 14, 3:31 AM CST, 20 minutes earlier.

Area forecast discussion, Jan 14, 3:31 AM CST, 20 minutes before

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The office that day

Everything else NWS La Crosse, WI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 14, 3:51 AM CST	Wind Chill Advisory	ARX	Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more	54 hr

Nearby

Winter Weather Advisories in Wisconsin, 2018 Winter Weather Advisories in Iowa, 2018 Winter Weather Advisories in Minnesota, 2018 Every winter weather advisory in 2018

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.