Dense Fog Advisory
URGENT - WEATHER MESSAGE
National Weather Service Aberdeen SD
354 AM CST Fri Nov 21 2025
SDZ009-015-016-033>035-045-048-051-211600-
/O.NEW.KABR.FG.Y.0016.251121T0954Z-251121T1600Z/
Walworth-Dewey-Potter-Stanley-Sully-Hughes-Jones-Lyman-Buffalo-
Including the cities of Pierre, Gettysburg, Fort Thompson,
Kennebec, Isabel, Mobridge, Fort Pierre, Murdo, and Onida
354 AM CST Fri Nov 21 2025 /254 AM MST Fri Nov 21 2025/
...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CST /9 AM MST/ THIS
MORNING...
* WHAT...Visibility one quarter mile or less in dense fog,
especially near and along the Missouri River. The combination of
temperatures below freezing and dense fog could result in light
icing on vehicles, roads, and sidewalks.
* WHERE...Buffalo, Hughes, Jones, Lyman, Stanley, Sully, Dewey,
Potter, and Walworth Counties.
* WHEN...Until 10 AM CST /9 AM MST/ this morning.
* IMPACTS...Low visibility could make driving conditions hazardous.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If driving, slow down, use your headlights, and leave plenty of
distance ahead of you.
&&
$$
06
Special Weather Statement
Special Weather Statement
National Weather Service Aberdeen SD
418 AM CST Fri Nov 21 2025
SDZ018>020-022-036-037-211230-
Spink-Clark-Codington-Hamlin-Hyde-Hand-
Including the cities of Redfield, Clark, Watertown, Hayti,
Highmore, and Miller
418 AM CST Fri Nov 21 2025
Patchy to areas of dense fog will continue through mid morning. Visibility
may be reduced to around one- quarter miles at times. Those traveling
this morning should be prepared for rapidly changing visibility and
reduced travel speeds. Plan extra time to get to your destination.
The combination of temperatures below freezing and dense fog could
result in light icing on vehicles, roads, and sidewalks.
$$
06
Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Aberdeen SD
503 AM CST Fri Nov 21 2025
SDZ003-004-009-015-016-018>020-022-033>037-045-048-051-221115-
Corson-Campbell-Walworth-Dewey-Potter-Spink-Clark-Codington-Hamlin-
Stanley-Sully-Hughes-Hyde-Hand-Jones-Lyman-Buffalo-
503 AM CST Fri Nov 21 2025 /403 AM MST Fri Nov 21 2025/
This Hazardous Weather Outlook is for central South Dakota, north
central South Dakota and northeast South Dakota.
.DAY ONE...Today and tonight.
Patchy to areas of dense fog will continue through mid morning.
Visibility may be reduced to around a quarter mile at times. Those
traveling this morning should be prepared for rapidly changing
visibility and reduced travel speeds. Plan extra time to get to your
destination. The combination of temperatures below freezing and dense
fog could result in light icing on vehicles, roads, and sidewalks.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday.
No hazardous weather is expected at this time.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not expected at this time.
$$
06
Hazardous Weather Outlook
National Weather Service Sioux Falls SD
328 AM CST Fri Nov 21 2025
IAZ001>003-012>014-020>022-031-032-MNZ071-072-080-081-089-090-097-
098-NEZ013-014-SDZ038>040-050-052>071-220930-
Lyon-Osceola-Dickinson-Sioux-O`Brien-Clay-Plymouth-Cherokee-
Buena Vista-Woodbury-Ida-Lincoln-Murray-Cottonwood-Nobles-Jackson-
Pipestone-Rock-Dixon-Dakota-Beadle-Kingsbury-Brookings-Gregory-
Jerauld-Sanborn-Miner-Lake-Moody-Brule-Aurora-Davison-Hanson-McCook-
Minnehaha-Charles Mix-Douglas-Hutchinson-Turner-Bon Homme-Yankton-
Union-
328 AM CST Fri Nov 21 2025
This Hazardous Weather Outlook is for northwest Iowa, west central
Iowa, southwest Minnesota, northeast Nebraska, central South
Dakota, east central South Dakota, south central South Dakota and
southeast South Dakota.
.DAY ONE...Today and tonight.
Patchy dense fog has developed across the region this morning.
Visibility may fall to less than a mile at times. The lowest
visibilities are mostly confined to low laying areas and river
valleys, west of the James River, and in northwestern Iowa. Be
prepared for rapidly changing visibility conditions.
In addition, widespread temperatures below freezing could result in
areas of freezing fog. This could result in slippery spots on
sidewalks and roadways. Fog should burn off by mid-morning.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday.
No hazardous weather is expected at this time.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not expected at this time.
$$
