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Winter Weather Advisory 0017
Issued by the Rapid City Forecast Office

Action Issued Starts Expiration
New 2025-12-02 02:31:11 2025-12-02 13:00:00 2025-12-03 07:00:00
Continued 2025-12-02 14:29:22 2025-12-03 07:00:00
Continued 2025-12-02 23:43:36 2025-12-03 07:00:00
Continued 2025-12-03 02:33:39 2025-12-03 07:00:00
Expired 2025-12-03 06:42:39 2025-12-03 07:00:00


Action: New
Issued At: 2025-12-02 02:31:11

670 
WWUS43 KUNR 020830
WSWUNR

URGENT - WINTER WEATHER MESSAGE
National Weather Service Rapid City SD
130 AM MST Tue Dec 2 2025

SDZ024-WYZ057-022330-
/O.NEW.KUNR.WW.Y.0017.251202T1900Z-251203T1300Z/
Northern Black Hills-Wyoming Black Hills-
Including the cities of Rochford, Mystic, Sundance, Deerfield,
Silver City, Terry Peak, Brownsville, Galena, Four Corners,
Cheyenne Crossing, Lead, Deadwood, and Nemo
130 AM MST Tue Dec 2 2025

...WINTER WEATHER ADVISORY IN EFFECT FROM NOON TODAY TO 6 AM MST 
WEDNESDAY...

* WHAT...Snow expected. Total snow accumulations 3 to locally 7 
  inches with the highest snowfall rates tonight, especially over 
  the higher elevations.

* WHERE...In South Dakota, Northern Black Hills. In Wyoming, Wyoming 
  Black Hills.

* WHEN...From noon today to 6 AM MST Wednesday.

* IMPACTS...Roads, and especially bridges and overpasses, will 
  likely become slick and hazardous. Plan on slippery road 
  conditions. The hazardous conditions could impact the Tuesday 
  evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. The latest road 
conditions for the state you are calling from can be obtained by 
calling 5 1 1.

&&

$$

Helgeson


Action: Continued
Issued At: 2025-12-02 14:29:22

981 
WWUS43 KUNR 022029
WSWUNR

URGENT - WINTER WEATHER MESSAGE
National Weather Service Rapid City SD
129 PM MST Tue Dec 2 2025

SDZ024-WYZ057-031130-
/O.CON.KUNR.WW.Y.0017.000000T0000Z-251203T1300Z/
Northern Black Hills-Wyoming Black Hills-
Including Lead, Deadwood, Cheyenne Crossing, Brownsville, 
Terry Peak, Rochford, Nemo, Sundance, and Four Corners
129 PM MST Tue Dec 2 2025

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 6
AM MST WEDNESDAY...

* WHAT...Snow. Additional snow accumulations of 2 to 5 inches.

* WHERE...In South Dakota, the Northern Black Hills. In Wyoming, 
  the Wyoming Black Hills.

* WHEN...Until 6 AM MST Wednesday.

* IMPACTS...Plan on slippery road conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

Road conditions are available on your smartphone from the
5 1 1 app for your state.

&&

$$


Action: Continued
Issued At: 2025-12-02 23:43:36

929 
WWUS43 KUNR 030543
WSWUNR

URGENT - WINTER WEATHER MESSAGE
National Weather Service Rapid City SD
1043 PM MST Tue Dec 2 2025

SDZ024-WYZ057-031300-
/O.CON.KUNR.WW.Y.0017.000000T0000Z-251203T1300Z/
Northern Black Hills-Wyoming Black Hills-
Including the cities of Deadwood, Four Corners, Cheyenne
Crossing, Mystic, Galena, Lead, Rochford, Nemo, Silver City,
Terry Peak, Brownsville, Sundance, and Deerfield
1043 PM MST Tue Dec 2 2025

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MST 
WEDNESDAY...

* WHAT...Snow. Additional snow accumulations of 2 to 5 inches.

* WHERE...In South Dakota, Northern Black Hills. In Wyoming, Wyoming 
  Black Hills.

* WHEN...Until 6 AM MST Wednesday.

* IMPACTS...Roads, and especially bridges and overpasses, will 
  likely become slick and hazardous. Plan on slippery road 
  conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. The latest road 
conditions for the state you are calling from can be obtained by 
calling 5 1 1.

&&

$$

Helgeson


Action: Continued
Issued At: 2025-12-03 02:33:39

370 
WWUS43 KUNR 030833
WSWUNR

URGENT - WINTER WEATHER MESSAGE
National Weather Service Rapid City SD
133 AM MST Wed Dec 3 2025

SDZ024-WYZ057-031300-
/O.CON.KUNR.WW.Y.0017.000000T0000Z-251203T1300Z/
Northern Black Hills-Wyoming Black Hills-
Including the cities of Deadwood, Four Corners, Cheyenne
Crossing, Mystic, Galena, Lead, Rochford, Nemo, Silver City,
Terry Peak, Brownsville, Sundance, and Deerfield
133 AM MST Wed Dec 3 2025

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MST EARLY 
THIS MORNING...

* WHAT...Snow. Additional snow accumulations of 2 to 4 inches.

* WHERE...In South Dakota, Northern Black Hills. In Wyoming, Wyoming 
  Black Hills.

* WHEN...Until 6 AM MST early this morning.

* IMPACTS...Roads, and especially bridges and overpasses, will 
  likely become slick and hazardous. Plan on slippery road 
  conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. The latest road 
conditions for the state you are calling from can be obtained by 
calling 5 1 1.

&&

$$

Helgeson


Action: Expired
Issued At: 2025-12-03 06:42:39

088 
WWUS43 KUNR 031242
WSWUNR

URGENT - WINTER WEATHER MESSAGE
National Weather Service Rapid City SD
542 AM MST Wed Dec 3 2025

SDZ024-WYZ057-031345-
/O.EXP.KUNR.WW.Y.0017.000000T0000Z-251203T1300Z/
Northern Black Hills-Wyoming Black Hills-
Including the cities of Deadwood, Four Corners, Cheyenne
Crossing, Mystic, Galena, Lead, Rochford, Nemo, Silver City,
Terry Peak, Brownsville, Sundance, and Deerfield
542 AM MST Wed Dec 3 2025

...WINTER WEATHER ADVISORY WILL EXPIRE AT 6 AM MST EARLY THIS 
MORNING...

Snow will taper off this morning with minor additional accumulations.

$$

Helgeson



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