Aberdeen, South Dakota

• Fog with pockets of visibility at or below 1 mile will continue through early evening over western Corson, Campbell, McPherson and Edmunds Counties.
• Light rain or drizzle will continue over portions of northeastern SD (mainly near the ND/SD border) this evening. An additional round of light rain is expected late this evening into late Sunday morning. Rainfall through Sunday morning will be around a tenth of an inch or less.
• Expect widespread moderate rain Monday morning through early Tuesday. There is a 25 to 35 percent chance of receiving 3 inches or more rain by Tuesday afternoon over portions of northeastern South Dakota and west central Minnesota. The lightest rainfall amounts, totaling generally less than an inch are forecast west of a line from Mobridge to Eagle Butte.
• Winds out of the north will gust 45 to 55 mph late Monday afternoon into Monday evening near and west of the Missouri River, and linger over portions of south central South Dakota into early Tuesday afternoon.

Steady light showers have remained mainly near and south of a line from Watertown to Miller today, with sprinkles/drizzle and fog being the main concern. There are still a few pockets of lower visibility that will continue to improve from north to south this afternoon into this evening. Pockets of 1 mile or less visibility are most likely to remain into this evening across western Corson, Campbell, McPherson and Edmunds Counties. The warm front near our southern counties will continue to push north and reside mainly north of the ND/SD border by 03Z Sunday as the surface low shifts across far western SD. This should help improve visibilities and bring about at least some temporary relief to the lower clouds. An additional round of moisture will push in in advance of the next low across WY/CO Sunday evening with showers becoming widespread.

The more steady moderate rainfall will behind late Sunday evening, with much of the rain falling during the daytime hours Monday. Rainfall amounts continue to show a large spread, but confidence is increasing as the time nears that rainfall amounts of over half an inch will be more and more likely (even across north central SD where the lightest amounts are anticipated). There is a 25 to 35 percent chance of receiving 3 inches or more rain by Tuesday afternoon over portions of northeastern South Dakota and west central Minnesota. The lightest rainfall amounts, totaling generally less than an inch are forecast west of a line from Mobridge to Eagle Butte. We will need to monitor river/stream levels due to this prolonged period of rain. The WPC Excessive Rainfall Forecast is in the Marginal category for the entire area. There is also a General Risk of thunderstorms over our far southeastern counties for this time period (Monday) so brief heavy pockets of rain will not be completely out of the question.

Otherwise, winds will be a concern for portions of central SD behind the exiting low. Winds out of the north will gust 45 to 55 mph late Monday afternoon into Monday evening near and west of the Missouri River, and linger over portions of south central South Dakota into early Tuesday afternoon.

Terminals KABR,KATY,KPIR,KMBG

Mainly LIFR conditions continue at the TAF sites, with ceilings around 200ft agl. The exception is MBG which has IFR ceilings. The lower visibility will continue to slowly improve south to north this afternoon. Brief VFR conditions are forecast for all but ATY late this evening into the early overnight hours before lower ceilings return to low end MVFR to IFR levels.

SD

None.

MN

None.