Alert archive / Wisconsin / Special Weather Statements in 2015

Special Weather Statement, NWS La Crosse, WI

June 20, 201512 counties in Wisconsin; 5 counties in Iowa; Houston County, Winona County, Minnesota

NWS La Crosse, WI issued this special weather statement at Jun 20, 2015, 7:41 AM CDT for 12 counties in Wisconsin; 5 counties in Iowa; Houston County, Winona County, Minnesota. It was in force for 94 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 20, 2015, 7:41 AM CDT (12:41 UTC)
Expired: Jun 20, 2015, 9:15 AM CDT
In force: 94 min
Issued by: NWS La Crosse, WI

Counties Allamakee County, IA, Chickasaw County, IA, Clayton County, IA, Fayette County, IA, Winneshiek County, IA, Houston County, MN, Winona County, MN, Adams 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), 44 km from the middle of the area, began a volume at 12:43 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, 0.7 hours before the alert went out and 233 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: 769 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 77 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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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
Jun 20, 5:28 AM CDT	Special Weather Statement	ARX	Chickasaw, Floyd, Howard, Mitchell	92 min
Jun 20, 6:44 AM CDT	Special Weather Statement	ARX	Allamakee, Chickasaw, Fayette, Floyd, Howard, Winneshiek	91 min
Jun 20, 9:52 AM CDT	Areal Flood Advisory	ARX	Fayette	3 hr
Jun 20, 2:38 PM CDT	Special Weather Statement	ARX	Dubuque	37 min

Nearby

Special Weather Statements in Wisconsin, 2015 Special Weather Statements in Iowa, 2015 Special Weather Statements in Minnesota, 2015 Every special weather statement in 2015

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.