Alert archive / Wisconsin / Special Weather Statements in 2019

Special Weather Statement, NWS La Crosse, WI

July 6, 2019Grant County, Wisconsin

NWS La Crosse, WI issued this special weather statement at Jul 6, 2019, 4:07 AM CDT for Grant County, Wisconsin. It was in force for 38 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: Jul 6, 2019, 4:07 AM CDT (09:07 UTC)
Expired: Jul 6, 2019, 4:45 AM CDT
In force: 38 min
Issued by: NWS La Crosse, WI

County Grant County, WI

The radar

The La Crosse radar (KARX), 105 km from the middle of the area, began a volume at 09:09 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

Minneapolis, MN (KMPX), launched 00:00Z, 9.1 hours before the alert went out and 318 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: 109 J/kg
Mixed-layer CIN: -79 J/kg
Mixed-layer LCL: 859 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: -13 m²/s²
0-3 km storm-relative helicity: 257 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.3

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jul 6, 2:47 AM CDT, 1 hour 20 minutes earlier.

Area forecast discussion, Jul 6, 2:47 AM CDT, 1 hour 20 minutes before

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Hazardous weather outlook, Jul 5, 5:30 AM CDT, 22 hours 37 minutes before

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In the hours before

Local storm report, Jul 5, 11:50 PM CDT, 4 hours 17 minutes before

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Local storm report, Jul 6, 12:19 AM CDT, 3 hours 48 minutes before

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Local storm report, Jul 6, 12:32 AM CDT, 3 hours 35 minutes before

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Local storm report, Jul 6, 1:27 AM CDT, 2 hours 40 minutes before

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Local storm report, Jul 6, 2:04 AM CDT, 2 hours 3 minutes before

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Special weather statement, Jul 6, 4:07 AM CDT, 0 minutes before

Special Weather Statement
National Weather Service La Crosse WI
407 AM CDT Sat Jul 6 2019

WIZ061-060945-
Grant-
407 AM CDT Sat Jul 6 2019

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN GRANT COUNTY...

At 406 AM CDT, a strong thunderstorm was located over Fennimore, or 9
miles northeast of Lancaster, moving east at 20 mph.

Winds in excess of 30 mph and half inch hail are possible with this
storm.

Locations impacted include...
Fennimore, Preston, Montfort, Livingston, Annaton, Highway 61 And
County T, Red Oak Ridge and Stitzer.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

LAT...LON 4288 9070 4314 9066 4318 9043 4287 9043
TIME...MOT...LOC 0906Z 270DEG 16KT 4297 9061

JAM

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 5, 7:43 PM CDT	Special Weather Statement	ARX	Mower	32 min
Jul 5, 10:30 PM CDT	Flash Flood Warning	ARX	Dodge, Olmsted	3 hr
Jul 6, 1:28 AM CDT	Flash Flood Warning	ARX	Dodge, Olmsted	3 hr
Jul 6, 4:32 AM CDT	Areal Flood Warning	ARX	Dodge, Olmsted	6 hr
Jul 6, 6:48 AM CDT	Areal Flood Warning	ARX	Olmsted	10 hr
Jul 6, 8:32 AM CDT	River Flood Warning	ARX	Olmsted	36 hr
Jul 6, 9:25 AM CDT	River Flood Warning	ARX	Wabasha	51 hr
Jul 5, 7:54 PM CDT	Special Weather Statement	ARX	Mitchell	36 min
Jul 5, 7:56 PM CDT	Severe Thunderstorm Warning	ARX	Mitchell	31 min
Jul 5, 8:00 PM CDT	Tornado Warning	ARX	Howard, Mitchell	18 min
Jul 5, 8:50 PM CDT	Special Weather Statement	ARX	Winneshiek	25 min

Nearby

Special Weather Statements in Wisconsin, 2019 Every special weather statement 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.