Alert archive / Iowa / Dense Fog Advisories in 2021
Dense Fog Advisory 19, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this dense fog advisory at Dec 31, 2021, 7:41 AM CST for Buena Vista County, Ida County, Iowa. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Dec 31, 2021, 7:41 AM CST (13:41 UTC)
- Expired
- Dec 31, 2021, 12:00 PM CST
- In force
- 4 hr
- Issued by
- NWS Sioux Falls, SD
Counties Buena Vista County, IA, Ida County, IA
The radar
The Sioux Falls radar (KFSD), 161 km from the middle of the area, began a volume at 13:45 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What forecasters said that day
The local office's own words before this dense fog advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Sioux Falls, SD wrote its last area forecast discussion before this dense fog advisory went out at Dec 31, 5:11 AM CST, 2 hours 30 minutes earlier.
Area forecast discussion, Dec 31, 5:11 AM CST, 2 hours 30 minutes before
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</html>Hazardous weather outlook, Dec 31, 3:19 AM CST, 4 hours 22 minutes before
Hazardous Weather Outlook National Weather Service Sioux Falls SD 319 AM CST Fri Dec 31 2021 IAZ001>003-012>014-MNZ080-081-089-090-098-SDZ050-059>070-010930- Lyon-Osceola-Dickinson-Sioux-O'Brien-Clay-Murray-Cottonwood- Nobles-Jackson-Rock-Gregory-Davison-Hanson-McCook-Minnehaha- Charles Mix-Douglas-Hutchinson-Turner-Lincoln-Bon Homme-Yankton- 319 AM CST Fri Dec 31 2021 This Hazardous Weather Outlook is for portions of northwest Iowa, southwest Minnesota, south central South Dakota, and southeast South Dakota. .DAY ONE...Today and Tonight Patchy light snow will be possible today but amounts will be on the light side. Closer to highway 14 and points north higher snowfall amounts will be possible. By tonight wind chill values will drop and average 25 below to 35 below zero. .DAYS TWO THROUGH SEVEN...Saturday through Thursday Wind chill values will remain at 25 below to 35 below zero through Saturday morning. Some light snow will be possible in far southeast South Dakota and northwest Iowa with some lighter accumulations possible from Sioux City to Storm Lake. Another shot of cold air may drop wind chill values to 20 below to 30 below zero Wednesday into Thursday. Additional light snow will be possible. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. MNZ071-072-097-SDZ038>040-052>058-010930- Lincoln-Lyon-Pipestone-Beadle-Kingsbury-Brookings-Jerauld-Sanborn- Miner-Lake-Moody-Brule-Aurora- 319 AM CST Fri Dec 31 2021 This Hazardous Weather Outlook is for portions of southwest Minnesota, central South Dakota, east central South Dakota, and south central South Dakota. .DAY ONE...Today and Tonight A band of light snow will move through east central South Dakota into parts of southwest Minnesota, with the better chances near highway 14. Snowfall amounts will likely be in the 1 to 3 inch range with some isolated locations possibly getting closer to 4 inches. Wind chills will drop tonight and average 25 below to 35 below zero. .DAYS TWO THROUGH SEVEN...Saturday through Thursday Wind chill values will remain at 25 below to 35 below zero through Saturday morning. Another shot of cold air may drop wind chill values to 20 below to 30 below zero Wednesday into Thursday. Additional light snow will be possible. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. IAZ020>022-031-032-NEZ013-014-SDZ071-010930- Plymouth-Cherokee-Buena Vista-Woodbury-Ida-Dixon-Dakota-Union- 319 AM CST Fri Dec 31 2021 This Hazardous Weather Outlook is for portions of northwest Iowa, west central Iowa, northeast Nebraska, and southeast South Dakota. .DAY ONE...Today and Tonight Wind chills will drop tonight and average 25 below to 35 below zero. .DAYS TWO THROUGH SEVEN...Saturday through Thursday Wind chill values will remain at 25 below to 35 below zero through Saturday morning. Some light snow will be possible in far southeast South Dakota and northwest Iowa late tonight into Saturday with some lighter accumulations possible from Sioux City to Storm Lake. Another shot of cold air may drop wind chill values to 20 below to 30 below zero Wednesday into Thursday. Additional light snow will be possible. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 30, 9:16 PM CST | Winter Weather Advisory | FSD | Aurora, Beadle, Brookings, Brule, Jerauld, Kingsbury and 2 more | 18 hr |
Nearby
Dense Fog Advisories in Iowa, 2021Every dense fog advisory in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.