Special Weather Statement, NWS La Crosse, WI

Area Forecast Discussion
National Weather Service La Crosse WI
602 PM CDT Wed Aug 7 2019

.SHORT TERM...(This evening through Saturday Night)
Issued at 259 PM CDT Wed Aug 7 2019

At 3 PM, a scattered thunderstorms were developing along a cold
front which extended from Dodge Center MN to Wausau WI. There was
an isolated severe storm in Jackson and Monroe counties in central
Wisconsin. Further north, a shortwave trough was generating
scattered storms across northern Wisconsin. A few of these storms
were severe in northeast Wisconsin.

For late this afternoon and evening, the 07.12z models are in good
agreement that the deep (0-6 km) shear will remain weak. The
0-3 km shear will be in the 20 to 25 knot range and 0-1 km ML CAPE
will range from 1500 to 2000 J/kg. Due to this, expect isolated
strong to severe storms through 8 PM across north-central and
central Wisconsin. The main threats will be hail up to quarters
and damaging winds.

High pressure will then provide dry weather through Friday night.
High temperatures will range from lower 70s to lower 80s. Low
temperatures will range from the upper 40s to upper 50s.

The chances of showers and storms will return to the forecast for
Saturday afternoon and night. While the shear is favorable for
supercells, the instability does not look good at this time.

.LONG TERM...(Sunday through Wednesday)
Issued at 259 PM CDT Wed Aug 7 2019

A cold front will move through the area Saturday night/Sunday
morning, bringing with it shower/storm chances. At this time,
instability looks to be limited due to a drier airmass expected to
be in place and the time of arrival. Thereafter, upper-level ridging
will become more zonal, which should keep temperatures seasonable
for the beginning of next week. A few shortwave troughs may bring
shower/storm chances Monday through Wednesday, but exact timing and
location will need to be refined as we get closer.

&&

.AVIATION...(For the 00Z TAFS through 00Z Thursday evening)
Issued at 602 PM CDT Wed Aug 7 2019

The cold front is progressing across the area at this time.
Expecting that it will be past both airports by 08.00Z allowing
the winds to have come around to the west/northwest and diminish
with a weaker gradient behind the front. The showers and storms
along the front should stay across central Wisconsin and do not
plan to include the mention of any rain in either forecast. Behind
the front, looking for just some high clouds through the overnight
hours with scattered diurnal cumulus Thursday afternoon. Enough of
a breeze to prevent fog formation, except in the east/west
valleys, so will have VFR forecasts for both sites.

&&

.ARX WATCHES/WARNINGS/ADVISORIES...
WI...None.
MN...None.
IA...None.
&&

SHORT TERM...Boyne
LONG TERM...Batzek
AVIATION...04

Hazardous Weather Outlook
National Weather Service La Crosse WI
415 AM CDT Wed Aug 7 2019

IAZ008>011-018-019-029-030-MNZ079-086>088-094>096-WIZ017-029-
032>034-041>044-053>055-061-081000-
Mitchell-Howard-Winneshiek-Allamakee-Floyd-Chickasaw-Fayette-
Clayton-Wabasha-Dodge-Olmsted-Winona-Mower-Fillmore-Houston-
Taylor-Clark-Buffalo-Trempealeau-Jackson-La Crosse-Monroe-Juneau-
Adams-Vernon-Crawford-Richland-Grant-
415 AM CDT Wed Aug 7 2019

This Hazardous Weather Outlook is for portions of southeast
Minnesota...northeast Iowa and southwest into central Wisconsin.

.DAY ONE...Today and Tonight

Thunderstorms are possible this afternoon and evening. A few
could be strong, potentially severe. Main threats include hail
and locally strong winds. The higher threat currently lies along
and north and east of Interstate 94, but could spread farther
south.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

There are occasional small storm chances from Saturday into next
week. Severe weather is not currently expected.

.SPOTTER INFORMATION STATEMENT...

A few local spotter groups could be needed this afternoon and
evening.

.EMERGENCY MANAGEMENT COORDINATION...

No webinar is scheduled.

Rieck

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LA CROSSE WI
605 PM CDT WED AUG 7 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0600 PM     TSTM WND GST     3 SW SPENCER            44.71N 90.34W
08/07/2019  E60 MPH          CLARK              WI   TRAINED SPOTTER

            SOME SMALL BRANCHES DOWN.

&&

CA

Special Weather Statement
National Weather Service La Crosse WI
634 PM CDT Wed Aug 7 2019

WIZ034-080030-
Jackson-
634 PM CDT Wed Aug 7 2019

...A STRONG THUNDERSTORM WILL AFFECT EAST CENTRAL JACKSON COUNTY...

At 634 PM CDT, a strong thunderstorm was located near Hatfield, or 12
miles east of Black River Falls, moving southeast at 40 mph.

Wind gusts up to 50 mph and penny size hail are possible with this
storm.

Locations impacted include...
Hatfield, City Point, East Fork Campground, The Black River
Correctional Center, Bear Bluff Township, Potters Flowage, Lake
Arbutus, Seventeen Flowage and Pray.

If outdoors, consider seeking shelter inside a building.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 4416 9041 4438 9081 4442 9080 4442 9032
      4416 9031
TIME...MOT...LOC 2334Z 295DEG 34KT 4437 9062

CA

Special Weather Statement
National Weather Service La Crosse WI
725 PM CDT Wed Aug 7 2019

WIZ043-044-080130-
Juneau-Adams-
725 PM CDT Wed Aug 7 2019

...A STRONG THUNDERSTORM WILL AFFECT NORTH CENTRAL JUNEAU AND ADAMS
COUNTIES...

At 724 PM CDT, a strong thunderstorm was located 7 miles northeast of
Necedah, or 12 miles northwest of Friendship, moving southeast at 45
mph.

Wind gusts up to 50 mph and penny size hail are possible with this
storm.

Locations impacted include...
Friendship, Adams, Necedah, New Rome, Strongs Prairie, Big Flats,
Colburn, New Miner, Lake Sherwood, The Preston Cliffs, Grand Marsh,
Roche A Cri State Park, Petenwell Dam, Arkdale and Lake Arrowhead.

If outdoors, consider seeking shelter inside a building.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 4410 9019 4425 9011 4425 8960 4382 8960
TIME...MOT...LOC 0024Z 299DEG 40KT 4411 8998

CA

Special Weather Statement
National Weather Service La Crosse WI
751 PM CDT Wed Aug 7 2019

WIZ034-042-080130-
Jackson-Monroe-
751 PM CDT Wed Aug 7 2019

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN JACKSON AND
NORTHEASTERN MONROE COUNTIES...

At 750 PM CDT, a strong thunderstorm was located near Millston, or 12
miles north of Tomah, moving southeast at 45 mph.

Winds in excess of 40 mph and nickel size hail are possible with this
storm.

Locations impacted include...
Tomah, Millston, Clifton, Warrens, Oakdale, Wyeville, Pigeon Creek
Campground, The North Flowage, Normay Ridge, and Valley Junction.

If outdoors, consider seeking shelter inside a building.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 4382 9031 4418 9073 4427 9062 4418 9031
TIME...MOT...LOC 0050Z 301DEG 39KT 4416 9058

CA

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LA CROSSE WI
806 PM CDT WED AUG 7 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0742 PM     TSTM WND GST     1 S ARKDALE             44.03N 89.88W
08/07/2019  E50 MPH          ADAMS              WI   FIRE DEPT/RESCUE

            ESTIMATED 40 TO 50 MPH WIND GUSTS.

&&

CA

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