Special Weather Statement, NWS Twin Cities, MN

Area Forecast Discussion
National Weather Service Twin Cities/Chanhassen MN
1136 PM CDT Wed Jul 8 2020

.Updated for 06Z Aviation Discussion...
Issued at 1127 PM CDT Wed Jul 8 2020

&&

.SHORT TERM...(This evening through Thursday night)
Issued at 243 PM CDT Wed Jul 8 2020

Latest visible satellite imagery shows mostly sunny skies across
much of the area, exceptions being diurnal cu across the southeast
portion of the area and some mid/high clouds and accas (with
perhaps some sprinkles reaching the surface) out west. The frontal
boundary extending from eastern South Dakota into northern
Minnesota will grudgingly move east through the period, getting a
better push on Thursday as the shortwave trough currently over
Saskatchewan and Montana moves by to our north. Ample instability
for convection will be in place into Thursday, but the best focus
for SHRA/TSRA looks to be to our north and west through at least
this evening, with better chances south and east across the
remainder of our area on Thursday. Shear looks to be best to our
northwest, but there should be sufficient shear for multi-cell
clusters and perhaps some bowing segments later tonight with
whatever activity is able to develop. High freezing levels should
preclude large hail in the absence of any supercell structures,
but winds would certainly be a concern with storms through early
Thursday.

.LONG TERM...(Friday through Wednesday)
Issued at 243 PM CDT Wed Jul 8 2020

Generally progressive large scale flow will occur through the
period, with a bit of a cooldown through the weekend as northwest
flow develops in the wake of Thursday's shortwave and surface
frontal passage. We'll then see ridging work in from the west
early next week as an upper trough moves into western Canada and
the Pacific northwest. Guidance is actually in fairly good
agreement on the large scale pattern, with differences in
deterministic solutions (and spread in ensemble systems) not
becoming too dramatic until midweek when there are differences in
how zonal the upper flow will become over the northern CONUS.
Didn't make any significant changes to the consensus NBM guidance,
but could certainly see the need to increase temperatures some
next week depending on the position and amplitude of the upper
ridge as well as how much and how quickly it flattens. We'll see a
chance for SHRA/TSRA late Friday and Saturday as we see some
return flow bring better low-level theta-e values back into the
area. The next chance of widespread precipitation looks to hold
off until Monday afternoon and Monday night when a wave looks to
move along the frontal boundary as it slowly slides east through
the region. It is at that point when guidance starts to diverge,
so there is quite a bit of spread in the position of the front and
how quickly it moves through the area (or if it moves through). As
a result, some chance PoPs cover much of the forecast from Monday
night onward.

&&

.AVIATION...(For the 06Z TAFS through 06Z Thursday night)
Issued at 1127 PM CDT Wed Jul 8 2020

Generally VFR conditions throughout. There is a chance for showers
and thunderstorms. These storms should weaken as they move
eastward overnight, but could see some redevelopment on Thursday,
especially east of I-35.

KMSP...
Generally VFR conditions throughout, but could have some
thunderstorms on Thursday. As of now the best chance is around
mid-day. Winds should become northwesterly.

/OUTLOOK FOR KMSP/
FRI...VFR. Wind NW at 10-15 kt.
SAT...VFR with -TSRA possible. Wind NW at 10 kt.
SUN...VFR. Wind VRB at 05 kt.

&&

.MPX WATCHES/WARNINGS/ADVISORIES...
WI...None.
MN...None.
&&

SHORT TERM...
LONG TERM...
AVIATION...JRB

Hazardous Weather Outlook
National Weather Service Twin Cities/Chanhassen MN
1126 PM CDT Wed Jul 8 2020

MNZ041>045-047>070-073>078-082>085-091>093-WIZ014>016-023>028-
100430-
Douglas-Todd-Morrison-Mille Lacs-Kanabec-Stevens-Pope-Stearns-
Benton-Sherburne-Isanti-Chisago-Lac Qui Parle-Swift-Chippewa-
Kandiyohi-Meeker-Wright-Hennepin-Anoka-Ramsey-Washington-
Yellow Medicine-Renville-McLeod-Sibley-Carver-Scott-Dakota-
Redwood-Brown-Nicollet-Le Sueur-Rice-Goodhue-Watonwan-Blue Earth-
Waseca-Steele-Martin-Faribault-Freeborn-Polk-Barron-Rusk-
St. Croix-Pierce-Dunn-Pepin-Eau Claire-
1126 PM CDT Wed Jul 8 2020

This Hazardous Weather Outlook is for portions of central and
southern Minnesota...and west central Wisconsin.

.DAY ONE...Tonight.

There is a chance for thunderstorms overnight. The threat for
severe weather is decreasing, but a few strong to severe storms
are still possible over western and central Minnesota

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Periodic thunderstorms are expected through early next week.
There is a Slight Risk of severe storms across western Wisconsin
Thursday, with a Marginal Risk across eastern Minnesota. Large
hail, damaging winds, and heavy rainfall are possible.

.SPOTTER INFORMATION STATEMENT...

SKYWARN spotter activation will not be needed.

jrb

Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
835 PM CDT Wed Jul 8 2020

MNZ045-090200-
Kanabec-
835 PM CDT Wed Jul 8 2020

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

At 835 PM CDT, a strong thunderstorm was located near Quamba, or 15
miles west of Hinckley, moving northeast at 25 mph.

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

Locations impacted include...
Quamba and Knife Lake.

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 4598 9306 4598 9314 4592 9314 4590 9325
      4601 9337 4614 9306
TIME...MOT...LOC 0135Z 243DEG 23KT 4596 9325

BPH

Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
928 PM CDT Wed Jul 8 2020

MNZ044-045-090300-
Mille Lacs-Kanabec-
928 PM CDT Wed Jul 8 2020

...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN KANABEC AND CENTRAL
MILLE LACS COUNTIES...

At 927 PM CDT, a strong thunderstorm was located near Milaca, or 27
miles northwest of Cambridge, moving northeast at 35 mph.

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

Locations impacted include...
Mora, Milaca, Ogilvie, Bock and Mora Airport.

This includes U.S. Highway 169 between mile markers 192 and 201.

LAT...LON 4574 9370 4584 9377 4604 9339 4586 9319
TIME...MOT...LOC 0227Z 239DEG 30KT 4583 9364

Dye

Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1154 PM CDT Wed Jul 8 2020

WIZ015-016-090545-
Barron-Rusk-
1154 PM CDT Wed Jul 8 2020

...AN AREA OF STRONG THUNDERSTORMS WILL AFFECT RUSK AND NORTHEASTERN
BARRON COUNTIES...

At 1154 PM CDT, strong thunderstorms were clustered near Exeland, or
15 miles northwest of Ladysmith, moving east at 30 mph.

Winds in excess of 40 mph are possible with this storm.

Locations impacted include...
Ladysmith, Bruce, Hawkins, Tony, Glen Flora, Ingram, Mikana and Rusk
County Airport.

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

LAT...LON 4544 9161 4564 9161 4563 9067 4542 9068
TIME...MOT...LOC 0454Z 271DEG 33KT 4560 9134

TDH

Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1257 AM CDT Thu Jul 9 2020

MNZ047-048-055-056-090645-
Chippewa-Stevens-Pope-Swift-
1257 AM CDT Thu Jul 9 2020

...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN POPE...NORTHWESTERN
CHIPPEWA...SOUTHEASTERN STEVENS AND SWIFT COUNTIES...

At 1256 AM CDT, a strong thunderstorm was located 8 miles north of
Milan, or 20 miles north of Montevideo, moving northeast at 35 mph.

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

Locations impacted include...
Benson, Appleton, Hancock, Milan, Cyrus, Lake Hassel, Lake Oliver,
Artichoke Lake, Clontarf, Hagen, De Graff and Danvers.

This includes the following highways...
 U.S. Highway 12 between mile markers 17 and 54.
 U.S. Highway 59 between mile markers 136 and 160.

LAT...LON 4537 9612 4566 9571 4536 9525 4529 9525
      4504 9589 4510 9598 4516 9605 4516 9609
      4518 9611 4524 9610 4524 9612
TIME...MOT...LOC 0556Z 229DEG 41KT 4523 9586

TDH

Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
156 AM CDT Thu Jul 9 2020

MNZ042-043-048>050-090745-
Benton-Morrison-Stearns-Pope-Todd-
156 AM CDT Thu Jul 9 2020

...A LINE OF STORMS WILL AFFECT NORTHEASTERN POPE...NORTHWESTERN
BENTON...SOUTHERN TODD...NORTHWESTERN STEARNS AND SOUTHWESTERN
MORRISON COUNTIES...

At 156 AM CDT, radar indicated strong thunderstorms were located
along a line extending from 9 miles south of Lake Osakis to Freeport.
Movement was northeast at 45 mph.

Wind gusts up to 50 mph and pea size hail are possible with these
storms.

Locations impacted include...
Little Falls, Sauk Centre, Melrose, Long Prairie, Albany, Avon,
Royalton, Browerville, Holdingford, Freeport, Upsala and Swanville.

This includes the following highways...
 Interstate 94 in Minnesota between mile markers 116 and 153.
 U.S. Highway 10 in Minnesota between mile markers 147 and 165.
 U.S. Highway 71 between mile markers 155 and 193.

LAT...LON 4583 9397 4544 9478 4571 9528 4576 9522
      4576 9514 4584 9514 4613 9481
TIME...MOT...LOC 0656Z 236DEG 47KT 4576 9518 4565 9472

TDH