Alert archive / Wisconsin / Winter Weather Advisories in 2019

Winter Weather Advisory 21, NWS La Crosse, WI

April 26, 20196 counties in Wisconsin; 4 counties in Minnesota

NWS La Crosse, WI issued this winter weather advisory at Apr 26, 2019, 3:05 PM CDT for 6 counties in Wisconsin; 4 counties in Minnesota. It took effect at Apr 27, 2019, 7:00 AM CDT. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued
Apr 26, 2019, 3:05 PM CDT (20:05 UTC)
In effect from
Apr 27, 2019, 7:00 AM CDT
Expired
Apr 27, 2019, 2:48 PM CDT
In force
8 hr
Issued by
NWS La Crosse, WI

Counties Dodge County, MN, Olmsted County, MN, Wabasha County, MN, Winona County, MN, Adams County, WI, Buffalo County, WI, Juneau County, WI, La Crosse County, WI, Monroe County, WI, Trempealeau County, WI

The radar

The La Crosse radar (KARX), 32 km from the middle of the area, began a volume at 20:06 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

Minneapolis, MN (KMPX), launched 12:00Z, 8.1 hours before the alert went out and 195 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-pSkew-T log-p diagram, Minneapolis, MN at 12:00Z on 2019-04-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2019-04-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -28 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
1278 m above ground
0-6 km bulk shear
63 kt
0-1 km storm-relative helicity
-28 m²/s²
0-3 km storm-relative helicity
46 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 26, 4:02 AM CDTWinter Storm WatchARXCrawford, Grant, La Crosse, Richland, Vernon11 hr
Apr 26, 3:05 PM CDTWinter Storm WarningARXCrawford, Grant, Richland, Vernon24 hr

Nearby

Winter Weather Advisories in Wisconsin, 2019Winter Weather Advisories in Minnesota, 2019Every winter weather advisory 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.