Low Visibilities from Foggy Conditions

On Friday morning, those in eastern South Dakota woke up to dense fog conditions, with visibilities reported to be a quarter of a mile or less.

Photo Credit: SDDOT Camera on I-29 at Watertown 04/11/2025 at 6:12am CDT

Watertown Airport Conditions:

Time	Winds	Visbilities	Conditions
05:53	Calm	0.15	Freezing Fog
04:53	Calm	0.25	Freezing Fog
03:53	Calm	0.25	Freezing Fog
02:53	Calm	0.25	Freezing Fog
01:53	E 3	0.25	Fog
00:53	Calm	5.00	Fog/Mist
23:53	Calm	10.00	Fair
22:53	Calm	10.00	Fair

Brookings Airport Conditions:

Time	Winds	Visibilities	Conditions
05:56	NE 3	0.25	Freezing Fog
04:56	W 6	0.25	Freezing Fog
03:56	Calm	0.25	Freezing Fog
02:56	Calm	0.25	Freezing Fog
01:56	W 3	0.25	Freezing Fog
00:51	W 7	0.25	Freezing Fog
23:56	Calm	5.00	Fog/Mist
22:56	NE 5	10.00	Fair

Aberdeen Airport Conditions:

Time	Winds	Visibilities	Conditions
05:53	S 3	0.25	Freezing Fog
04:53	SE 3	7.00	Mostly Cloudy
03:53	E 3	10.00	A Few Clouds
02:53	Calm	0.25	Freezing Fog
01:53	Calm	0.25	Freezing Fog
00:53	Calm	9.00	Fair
23:53	E 3	10.00	Fair
22:53	Calm	10.00	Fair

The National Weather Service Offices in Sioux Falls and Aberdeen issued an advisory for the dense fog and low visibilities during the overnight hours.