Severe Thunderstorm Warning 50, NWS Aberdeen, SD

Area Forecast Discussion...UPDATED
National Weather Service Aberdeen SD
1226 AM CDT Mon Jun 8 2026

.KEY MESSAGES...

- Tonight, there is an Enhanced Risk, level 3/5, for scattered to
numerous severe storms over the western half of Corson County. There
is a Slight Risk, level 2/5, for scattered severe storms along and
west of a line from Eureka to Murdo. Main threats include large
hail, one to two inches in diameter, and wind gusts of 70+ mph. A
tornado or two cannot be ruled out within the Enhanced Risk.

- Tuesday afternoon through Tuesday night, there is an Enhanced Risk
(3 of 5) for severe storms north of Hwy 12 from McLaughlin to
Frederick. There is a Slight Risk (2 of 5) everywhere else. All
hazards are possible.

&&

.UPDATE...
Issued at 1218 AM CDT Mon Jun 8 2026

Updated discussion for the 06Z TAFs below.

UPDATE Issued at 803 PM CDT Sun Jun 7 2026

The Wind Advisory has been allowed to expire due. Strong storms
moving in from western South Dakota could bring another round
of strong winds to north central SD this evening into the early
overnight hours.

UPDATE Issued at 702 PM CDT Sun Jun 7 2026

UPDATE for the 00Z TAF discussion.

Showers remain over far northeastern SD and west central MN this
evening. A few lightning strikes, and pea sized hail will be the
main concern with the strongest storms. We are also monitoring
strong to severe thunderstorms over far northwestern SD that
will be nearing Mobridge after 05Z, with predominate TS between
06-08Z. Strong winds will be the main concern with these storms
as they near Mobridge. A Severe Thunderstorm Watch remains in
effect for Corson County until 10 PM MT.

&&

.DISCUSSION...
Issued at 105 PM CDT Sun Jun 7 2026

A wind advisory remains in effect for portions of north central SD
this afternoon. With only a 12 mb pressure gradient over the state
and no cold air advection, the advisory is marginal at best with the
usual channeled or elevated spots seeing occasional gusts over 45
mph.

A weak sfc low/cold front will move east across SD late tonight
through Monday morning. The best shortwave energy/jet streak has
slowed its eastward progress through SD on the latest model runs,
robbing the sfc front of some of its potential energy. Although the
outlooks from SPC haven't changed markedly in the latest updates,
the highest potential for storms appears to hardly move out of
northwest SD into central SD until between 3z and 6z. And, much of
that activity may stay centered over south central ND. Anything that
trails into north central SD overnight, though, could still produce
wind gusts to 70 mph and/or some large hail around an inch.

The sfc low weakens and dissipates Monday morning over eastern SD.
This timing will leave areas east of the Coteau in southerly flow
most of Monday. The higher dewpoints and temperatures on the
southerly flow could lead to some thunderstorm development in the
afternoon. There is a marginal risk for the area, accordingly,
though spatial extent for storms differs depending on the model and
where they weaken that front. Lowered high temps for Monday west of
the front by blending in 50% ConsShort with the NBM. The hi-res are
more progressive with the cooler temps than the NBM.

Tuesday warms back up with a return of southeast flow and more
humidity. Areas south of Hwy 14 could approach "feels-like" temps of
around 100 degrees. The upper trough that teases the region tonight
will move a touch farther east Tuesday. Shortwave energy will eject
into SD on the eastern edge of the trough by 21z and the jet will
increase. Sfc low pressure moves through ND Tuesday evening from
west to east with a trailing cold front. There is an Enhanced Risk
(3 out of 5) for Tuesday across portions of north central SD where
all hazards will be in play.

&&

.AVIATION /06Z TAFS THROUGH 06Z TUESDAY/...
Issued at 1218 AM CDT Mon Jun 8 2026

Terminals KABR,KATY,KPIR,KMBG

A line of strong showers and thunderstorms are moving eastward
across north central SD and will be affecting KMBG TAF site in
the next hour or so. This line of storms will continue to track
eastward with KABR between ~08 to 09Z. The main concern will be
strong winds associated with this. Vicinity rain showers are
currently near KATY with most of this staying mainly east and
southeast of the TAF site. These should exit the region this
afternoon with additional chances of showers and thunderstorms
this afternoon and evening that may affect KATY. Otherwise,
mainly MVFR/VFR cigs through the TAF forecast with drops in
visibility with any stronger storm. ATY will be borderline IFR
ceilings between 10-14Z.

&&

.ABR WATCHES/WARNINGS/ADVISORIES...
SD...None.
MN...None.

&&

UPDATE...MMM
DISCUSSION...20
AVIATION...MMM

Hazardous Weather Outlook
National Weather Service Aberdeen SD
320 AM CDT Sun Jun 7 2026

SDZ006>008-011-017>019-036-037-048-051-080830-
Brown-Marshall-Roberts-Day-Faulk-Spink-Clark-Hyde-Hand-Lyman-Buffalo-
320 AM CDT Sun Jun 7 2026

This Hazardous Weather Outlook is for central South Dakota, north
central South Dakota and northeast South Dakota.

.DAY ONE...Today and tonight.

There is a Marginal Risk, level 1/5, for severe storms tonight. Main
threats are hail, inch in diameter, and 60 mph wind gusts.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

There is an Enhanced Risk, level 3/5, for severe weather over
portions of north central SD and a Slight Risk, level 2/5, for severe
storms over central and northeastern SD Tuesday. All modes of severe
weather are possible. Severe storms are again possible Wednesday
James Valley and eastward.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be requested. Weather spotters are encouraged
to submit reports to the National Weather Service in Aberdeen. The
public can submit reports on our web page, Facebook page, or our X
feed.

SDZ003-080830-
Corson-
220 AM MDT Sun Jun 7 2026

This Hazardous Weather Outlook is for north central South Dakota.

.DAY ONE...Today and tonight.

There is an Enhanced Risk, level 3/5, for scattered to numerous
severe storms over the western half of Corson County this evening
into tonight. Main threats include large hail, 1 to 2+ inches in
diameter, and wind gusts of 70+ mph. A tornado or two cannot be ruled
out as well. Heavy rain that could lead to flooding is also be a
concern.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

There is an Enhanced risk, level 3/5, for numerous severe storms
Tuesday with all severe modes possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will likely be needed. Weather spotters are
encouraged to submit reports to the National Weather Service in
Aberdeen. The public can submit reports on our web page, Facebook
page, or our X feed.

SDZ004-005-009-010-015-016-033>035-045-080830-
Campbell-McPherson-Walworth-Edmunds-Dewey-Potter-Stanley-Sully-
Hughes-Jones-
320 AM CDT Sun Jun 7 2026 /220 AM MDT Sun Jun 7 2026/

This Hazardous Weather Outlook is for central South Dakota and
north central South Dakota.

.DAY ONE...Today and tonight.

There is a Slight Risk, level 2/5, for scattered severe storms along
and west of the line from Eureka to Murdo this evening into tonight.
Main threats include large hail, one to two inches in diameter, and
wind gusts of 70+ mph. Heavy rain that could lead to flooding is also
be a concern.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

There is an Enhanced Risk, level 3/5, for severe storms over portions
of north central SD and a Slight Risk, level 2/5, for severe storms
over central SD Tuesday. All modes of severe weather are possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be requested. Weather spotters are encouraged
to submit reports to the National Weather Service in Aberdeen. The
public can submit reports on our web page, Facebook page, or our X
feed.

MNZ039-046-SDZ020>023-080830-
Traverse-Big Stone-Codington-Grant-Hamlin-Deuel-
320 AM CDT Sun Jun 7 2026

This Hazardous Weather Outlook is for west central Minnesota and
northeast South Dakota.

.DAY ONE...Today and tonight.

Showers and thunderstorms are possible late tonight into Monday
morning. While no severe weather is anticipated, pea size hail and
wind gusts of 50 mph are possible with lightning being the main
threat.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Marginal Risk, level 1/5, for severe storms Monday afternoon with the
main threats being quarter size hail and 60 mph wind gusts. There is
a Slight Risk, level 2/5, for severe storms Tuesday with all modes of
severe weather possible. Wednesday will continue with a chance of
severe weather James Valley and eastward through west central MN.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

Special Weather Statement
National Weather Service Aberdeen SD
937 PM MDT Sun Jun 7 2026

SDZ003-080400-
Corson SD-
937 PM MDT Sun Jun 7 2026

...A STRONG THUNDERSTORM WILL IMPACT NORTHWESTERN CORSON COUNTY
THROUGH 1000 PM MDT...

At 937 PM MDT, Doppler radar was tracking a strong thunderstorm near
Thunder Hawk, or 10 miles southeast of Lemmon, moving northeast at 30
mph.

HAZARD...Wind gusts up to 50 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

Locations impacted include...
Morristown, Watauga, Keldron, and Thunder Hawk.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Severe Thunderstorm Watch remains in effect until midnight MDT for
north central South Dakota.

&&

LAT...LON 4594 10200 4594 10150 4567 10200
TIME...MOT...LOC 0337Z 225DEG 27KT 4584 10200

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 MPH

06

Special Weather Statement
National Weather Service Aberdeen SD
1049 PM MDT Sun Jun 7 2026

SDZ003-015-080530-
Dewey SD-Corson SD-
1049 PM MDT Sun Jun 7 2026

...STRONG THUNDERSTORMS WILL IMPACT CORSON AND NORTHWESTERN DEWEY
COUNTIES THROUGH 1130 PM MDT...

At 1049 PM MDT, Doppler radar was tracking strong thunderstorms along
a line extending from Walker to 6 miles south of Klein Ranch to 7
miles west of Green Grass. Movement was east at 40 mph.

HAZARD...Wind gusts of 50 to 55 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

Locations impacted include...
Eagle Butte, Mclaughlin, Timber Lake, Little Eagle, Bullhead, Lantry,
Mcintosh, Isabel, White Horse, Morristown, Firesteel, Watauga, Green
Grass, Little Moreau Rec Area, Trail City, Mahto, Black Horse,
Parade, Bear Creek, and Walker.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Severe Thunderstorm Watch remains in effect until midnight MDT for
north central South Dakota.

&&

LAT...LON 4594 10200 4595 10055 4594 10050 4590 10044
      4560 10068 4505 10083 4499 10139 4499 10150
      4547 10147 4547 10200
TIME...MOT...LOC 0449Z 267DEG 36KT 4593 10106 4557 10132 4521 10139

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...55 MPH

06

Preliminary Local Storm Report
National Weather Service Aberdeen SD
1225 AM CDT Mon Jun 8 2026

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

1214 AM     Tstm Wnd Gst     1 NE Timber Lake        45.43N 101.07W
06/08/2026  M64 MPH          Dewey              SD   Mesonet

            Mesonet station 293 Timber Lake (SDDOT).

&&

RV

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