Severe Thunderstorm Warning 185, NWS Twin Cities, MN

696 
WWUS53 KMPX 210242
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
942 PM CDT Thu Aug 20 2026

MNC097-210300-
/O.CON.KMPX.SV.W.0185.000000T0000Z-260821T0300Z/
Morrison MN-
942 PM CDT Thu Aug 20 2026

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 10 PM CDT FOR
EAST CENTRAL MORRISON COUNTY...

At 942 PM CDT, a severe thunderstorm was located near Lastrup, or 19
miles east of Little Falls, moving southeast at 25 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to
         roofs, siding, and trees.

Locations impacted include...
  Harding and Hillman.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Seek shelter inside a well-built structure and stay away from
windows. This storm is capable of producing damaging winds and large
hail.

&&

LAT...LON 4591 9400 4616 9410 4616 9381 4598 9381
      4598 9377 4591 9377
TIME...MOT...LOC 0212Z 336DEG 19KT 4619 9407

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Dye

087 
WWUS53 KMPX 210251
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
951 PM CDT Thu Aug 20 2026

MNC097-210301-
/O.EXP.KMPX.SV.W.0185.000000T0000Z-260821T0300Z/
Morrison MN-
951 PM CDT Thu Aug 20 2026

...SEVERE THUNDERSTORM WARNING WILL EXPIRE AT 10 PM CDT FOR EAST
CENTRAL MORRISON COUNTY...

The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However, gusty
winds and heavy rain are still possible with this thunderstorm.

A Severe Thunderstorm Watch remains in effect until 1200 AM CDT for a
portion of central Minnesota.

&&

LAT...LON 4591 9400 4616 9410 4616 9381 4598 9381
      4598 9377 4591 9377
TIME...MOT...LOC 0242Z 336DEG 19KT 4604 9398

$$

Dye

Area Forecast Discussion
National Weather Service Twin Cities/Chanhassen MN
714 PM CDT Thu Aug 20 2026

.KEY MESSAGES...

- Scattered thunderstorms expected this evening along a passing
  cold front. A few severe thunderstorms could produce large
  hail and gusty winds.

- Seasonable temperatures and mostly dry weather through the
  weekend into next week.

&&

.DISCUSSION...
Issued at 123 PM CDT Thu Aug 20 2026

Tonight...Early morning showers have persisted well into the
afternoon here, limiting the atmosphere from recovering as much.
That said, the combination of some clearing out west and
increasing moisture has allowed a pool of greater instability to
form across western and north-central MN. As the front moves
southeast this evening, we expect isolated to scattered storms
to develop along it, most likely over central MN. Sufficient
wind shear (~30 to 40 kts) and moisture (PWATS ~1.2 to 1.4")
will support the development and organization of at least a few
storms. It is uncertain how many storms will become strong
enough to reach severe limits given the relatively weaker mid
level lapse rates (around 6 to 6.5 C/km). The SPC has
maintained a slight risk of severe weather across a strip of MN
and northwest WI, with a focus on large hail. It is important to
note that not everyone within the risk area will see storms, in
fact most may not see any rain, but that is the best
environment for any storms that do develop to become more
organized. The latest timing favors a later arrival for most
locations, with the initial storms developing around 5-7pm near
Alexandria and Brainerd, then moving southeast towards the Twin
Cities metro and western WI around 9pm-midnight. Storms
west/south of I-94 are more uncertain for storm development,
especially across Minnesota.

This Weekend and Early Next Week...The forecast becomes "boring"
again heading into the weekend as drier air moves in and
northwest flow continues aloft. Temperatures remain very
seasonable, and cloud cover should be pretty limited to your
typical diurnal cumulus clouds each day.

Things shake up a little bit as we head into next week and
heights start to rise aloft. Surface winds shift out of the
south and warmer temperatures and greater moisture gradually
returns. Long range guidance is showing broad agreement of rain
chances at some point Monday-Wednesday, likely in the form of
another frontal passage. That's a ways out, so we'll focus on
the nice weather this weekend instead!

&&

.AVIATION /00Z TAFS THROUGH 06Z SATURDAY/...
Issued at 653 PM CDT Thu Aug 20 2026

Isolated storms have developed near a cold front in western MN,
with this activity expected to slide southeast over the next
couple of hours. Greater TS coverage is occurring in northern
MN where better forcing exists with shortwave energy dropping
through northern MN. The storm west of RWF will track
along/southeast of the MN River, likely skimming past RWF and
MKT to the south. Storms in northern MN will drop southeast
toward western WI, leading to increased TS threat for RNH/EAU
closer to 6z. MSP/STC look to be between these two areas of
enhanced storms. As these storms diminish overnight, stratus/fog
is expected to develop closer to DLH near what will be a
weakening surface low. Main question with this is how far south
does the stratus extend. RAP soundings would support stratus
getting as far south as MSP, though when looking at the range of
hi-res models, it's really western WI (RNH/EAU) that stands out
for having an IFR/MVFR stratus threat. Once any stratus mixes
out Friday morning, the rest of the Friday will be uneventful.

KMSP...Kept the prob30 for TS in the 2z to 5z window, though
current trends would suggest MSP will miss out on yet another
rainfall opportunity with this front, with storms going north
and south of the metro. For stratus tonight, current
expectations is it will remain north of the metro, closer to the
remnants of the surface low.

/OUTLOOK FOR KMSP/
SAT...VFR. Wind NW 5-15 kts.
SUN...VFR. Wind N 5-10 kts.
MON...VFR, chc -SHRA late night. Wind S 5-15 kts.

&&

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

&&

DISCUSSION...BED
AVIATION...MPG

Hazardous Weather Outlook
National Weather Service Twin Cities/Chanhassen MN
128 PM CDT Thu Aug 20 2026

MNZ041>045-047>070-073>078-082>085-091>093-WIZ014>016-023>028-
211830-
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-
128 PM CDT Thu Aug 20 2026

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

.DAY ONE...This Afternoon and Tonight.

Scattered thunderstorms are expected this evening. The strongest
storms could contain large hail & damaging winds.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

SKYWARN spotter activation may be needed.

Preliminary Local Storm Report
National Weather Service Twin Cities/Chanhassen MN
757 PM CDT Thu Aug 20 2026

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

0750 PM     Hail             1 ESE Wabasso           44.40N 95.23W
08/20/2026  M1.75 Inch       Redwood            MN   Trained Spotter

            1.5 to 1.75 inch hail measured.

&&

mpg

Preliminary Local Storm Report
National Weather Service Twin Cities/Chanhassen MN
810 PM CDT Thu Aug 20 2026

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

0805 PM     Hail             1 ENE Westport          45.72N 95.15W
08/20/2026  M1.00 Inch       Pope               MN   Law Enforcement

&&

tdk