Wind Advisory 21, NWS Rapid City, SD

320 
WWUS73 KUNR 290912
NPWUNR

URGENT - WEATHER MESSAGE
National Weather Service Rapid City SD
312 AM MDT Mon Jun 29 2026

SDZ012-013-025>027-030-031-041-042-072>076-300200-
/O.CON.KUNR.WI.Y.0021.260629T1600Z-260630T0200Z/
Butte-Northern Meade Co Plains-Northern Foothills-Rapid City-
Southern Foothills-Custer Co Plains-Pennington Co Plains-Western
Fall River-Northern Oglala Lakota-Sturgis/Piedmont Foothills-
Southern Meade Co Plains-Hermosa Foothills-Eastern Fall River-
Southern Oglala Lakota-
Including the cities of Whitewood, Black Hawk, Sharps Corner,
Piedmont, Union Center, Rockyford, Fairburn, Summerset, Oglala,
Batesland, Enning, Spearfish, Quinn, Folsom, Tilford, Oral, Ellsworth
AFB, Hot Springs, Wounded Knee, Hermosa, Belle Fourche, Kyle, Box
Elder, Vale, Belle Fourche Reservoir, Opal, Saint Onge, Pine Ridge,
Newell, Provo, Wasta, Red Owl, Oelrichs, Manderson, Faith, Fruitdale,
Hoover, Angostura Reservoir, New Underwood, Rumford, Caputa, Scenic,
Sturgis, Elm Springs, Porcupine, Ardmore, Smithwick, Edgemont, Wall,
Mud Butte, Howes, White Owl, Buffalo Gap, and Rapid City
312 AM MDT Mon Jun 29 2026

...WIND ADVISORY REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 8 PM
MDT THIS EVENING...

* WHAT...Southwest winds 25 to 35 mph with gusts up to 55 mph
  expected.

* WHERE...Portions of northwestern and southwestern South Dakota.

* WHEN...From 10 AM this morning to 8 PM MDT this evening.

* IMPACTS...Sudden wind gusts can cause drivers to lose control,
  especially in lightweight or high profile vehicles. Strong winds
  can cause blowing dust, reduced visibility, and flying debris.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Winds this strong can make driving difficult, especially for high
profile vehicles. Use extra caution.

&&

$$

MLS

180 
WWUS73 KUNR 300202
NPWUNR

URGENT - WEATHER MESSAGE
National Weather Service Rapid City SD
802 PM MDT Mon Jun 29 2026

SDZ012-013-025>027-030-031-041-042-072>076-300315-
/O.EXP.KUNR.WI.Y.0021.000000T0000Z-260630T0200Z/
Butte-Northern Meade Co Plains-Northern Foothills-Rapid City-
Southern Foothills-Custer Co Plains-Pennington Co Plains-Western
Fall River-Northern Oglala Lakota-Sturgis/Piedmont Foothills-
Southern Meade Co Plains-Hermosa Foothills-Eastern Fall River-
Southern Oglala Lakota-
Including the cities of Rumford, Hoover, Hot Springs, Sharps Corner,
Union Center, Folsom, Piedmont, Spearfish, Black Hawk, Fruitdale,
Whitewood, Faith, Edgemont, Hermosa, Sturgis, Saint Onge, Rockyford,
Fairburn, Pine Ridge, Smithwick, Angostura Reservoir, Scenic, Quinn,
Provo, Vale, Elm Springs, Batesland, Manderson, Howes, Wasta, Opal,
Red Owl, Rapid City, White Owl, Oral, Buffalo Gap, Wounded Knee, Box
Elder, Oelrichs, Tilford, Newell, Belle Fourche, Wall, Oglala,
Ardmore, Kyle, Ellsworth AFB, Caputa, Belle Fourche Reservoir, Mud
Butte, Enning, Summerset, Porcupine, and New Underwood
802 PM MDT Mon Jun 29 2026

...WIND ADVISORY HAS EXPIRED...

Winds will continue to gradually decrease this evening.

$$

KSmith

Area Forecast Discussion For Western SD and Northeastern WY
National Weather Service Rapid City SD
1119 AM MDT Sun Jun 28 2026

.KEY MESSAGES...

- Isolated/scattered severe storms tonight.

- Gradual warming trend through next week, with possible 100s by
  Friday.

&&

.UPDATE...
Issued at 1036 PM MDT Sat Jun 27 2026

KUDX radar shows a line of thunderstorms ahead of a strong upper
level shortwave now moving through south central SD. More storms
have developed along the tail end of the line in Cherry County, NE.
Short term guidance suggests, as the current line pushes into Tripp
County, the NE storms will then move into western portions of south
central SD. Given this, have added Tripp County to the Tornado Watch
and extending the watch until 07z. Eventually these storms will move
east of the CWA late tonight. Looking ahead to tomorrow...drier air
behind the departing wave will hinder storm development during the
daytime hours. However, surface low pressure will develop across the
CO plains and move into western NE in the late afternoon and
evening. A strong southeasterly LLJ will bring in very strong Theta
E advection north of the low across western SD...which will support
mainly elevated thunderstorms. Shear profiles in the elevated layer
are mostly linear, which could support some strong/severe storms.
The best chances for the overnight convection will be from the Black
Hills eastward, including NW SD.

&&

.DISCUSSION...(This Afternoon Through Friday)
Issued at 1017 AM MDT Sat Jun 27 2026

Current upper air models show mild ridge over the midwest region
and shortwave over the MT/WY area, upper low over the PAC NW. At
the surface, low pressure sits over southeastern MT, with a
frontal boundary stretching down through WY. Temperatures
currently sit in the upper 60s and 70s, with breezy south to
southeasterly winds this morning.

Shortwave and attendant sfc low / frontal boundary slides across
the region today. No shortage of available energy today, with ML
CAPE values 3000-4500 j/Kg for areas east and north of the Black
Hills this afternoon, while southwestern to south-central SD sit
in the 1500-3000 j/Kg range. Effective shear ranges from 30-45kts
as well this afternoon, making for a good supercell development
day. Storms today will be capable of large hail (2"+) and strong
winds (70mph+). Tornado threat is also present today, with the RAP
showing northwest into central SD 50-100 helicity, LCL's around
1000-1500 meters, and sig tor of 2-3 for northwestern SD. SPC has
northwestern SD in a 10% tor, which is significant for our region.
CAMs show storms popping in the 19-21Z timeframe mainly over MT
and WY, moving northeast. Main severe threat will be over
northwestern SD for our CWA, however CAMs do try to pop a couple
cells over southwestern SD mid-afternoon. Severe threat is a bit
lower over the Black Hills and Rapid City area, but cannot be
counted out. Storm threat runs through midnight, but by late
evening, should be located closer to central SD.

By Sunday, upper low is expected over the ID/MT region, with a
more southwest flow over the forecast area, and another chance for
storms more in the evening to Monday morning timeframe. Isolated
severe storms may be possible again, however bit less energy and
shear to support widespread severe storms.

With the upper low moving east of the Rockies, temperatures dip a
bit for Sunday and Monday, though still in the upper 70s and 80s.
Temperatures gradually climb during the week, as main ridge builds
to the east of us, and shortwave ridge builds over the Rockies.
By Friday, some areas could see temps climb to around 100. WPC
heat risk climbs into the moderate-major range for Thursday and
Friday.

&&

.AVIATION...(For the 18Z TAFS Through 18Z Monday)
Issued At 1116 AM MDT Sun Jun 28 2026

VFR conditions expected through 29/03z. Breezy southwest winds
will gust to 35kts over the northeastern WY plains. Scattered
tsra will develop this evening over western SD, especially after
29/03z. Any storm may bring IFR conditions, strong wind gusts, and
hail. Along/east of K2WX-KVTN after 29/06z, areas of IFR/MVFR
CIGS will develop.

&&

.UNR WATCHES/WARNINGS/ADVISORIES...
SD...None.
WY...None.
&&

UPDATE...13
DISCUSSION...Dye
AVIATION...Helgeson

Preliminary Local Storm Report
National Weather Service Rapid City SD
1030 AM MDT Sun Jun 28 2026

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

0500 AM     Rain             3 WNW Kadoka            43.85N 101.56W
06/28/2026  M0.89 inch       Jackson            SD   CoCoRaHS

            24-hour rainfall.

0600 AM     Rain             7 NW Clearfield         43.24N 100.14W
06/28/2026  M1.66 inch       Tripp              SD   CoCoRaHS

            24-hour rainfall.

0600 AM     Rain             9 N Cedar Butte         43.71N 101.03W
06/28/2026  M0.52 inch       Mellette           SD   CoCoRaHS

            24-hour rainfall.

0600 AM     Rain             16 SSE Mission          43.09N 100.53W
06/28/2026  M1.93 inch       Todd               SD   CoCoRaHS

            24-hour rainfall.

0600 AM     Rain             9 ENE Wewela            43.06N  99.61W
06/28/2026  M2.94 inch       Tripp              SD   CoCoRaHS

            24-hour rainfall.

0700 AM     Rain             6 SE Interior           43.67N 101.90W
06/28/2026  M0.62 inch       Jackson            SD   CoCoRaHS

            24-hour rainfall.

0700 AM     Rain             14 S Mission            43.11N 100.61W
06/28/2026  M1.43 inch       Todd               SD   Co-Op Observer

            24-hour rainfall.

0700 AM     Rain             3 SE Philip             44.01N 101.63W
06/28/2026  M0.59 inch       Haakon             SD   CoCoRaHS

            24-hour rainfall.

0700 AM     Rain             5 WSW Colome            43.23N  99.79W
06/28/2026  M2.27 inch       Tripp              SD   CoCoRaHS

            24-hour rainfall.

0700 AM     Rain             3 E Midland             44.08N 101.10W
06/28/2026  M0.54 inch       Haakon             SD   CoCoRaHS

            24-hour rainfall.

0700 AM     Rain             Quinn                   43.99N 102.13W
06/28/2026  M0.53 inch       Pennington         SD   CoCoRaHS

            24-hour rainfall.

0700 AM     Rain             3 WSW Wanblee           43.55N 101.73W
06/28/2026  M0.66 inch       Jackson            SD   CoCoRaHS

            24-hour rainfall.

0700 AM     Rain             8 ESE Prairie City      45.50N 102.64W
06/28/2026  M0.61 inch       Perkins            SD   CoCoRaHS

            24-hour rainfall.

0800 AM     Rain             9 WSW Ladner            45.78N 103.90W
06/28/2026  M0.98 inch       Harding            SD   CoCoRaHS

            24-hour rainfall.

&&

NWS UNR