Hazardous Weather Outlook
Issued by NWS Sioux Falls, SD

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843
FLUS43 KFSD 170924
HWOFSD

Hazardous Weather Outlook
National Weather Service Sioux Falls SD
424 AM CDT Thu May 17 2018

IAZ001>003-012>014-020>022-031-032-MNZ071-072-080-081-089-090-097-
098-NEZ013-014-SDZ040-055-056-061-062-066-067-069>071-180930-
Lyon IA-Osceola-Dickinson-Sioux-O`Brien-Clay IA-Plymouth-Cherokee-
Buena Vista-Woodbury-Ida-Lincoln MN-Lyon MN-Murray-Cottonwood-
Nobles-Jackson-Pipestone-Rock-Dixon-Dakota-Brookings-Lake-Moody-
McCook-Minnehaha-Turner-Lincoln SD-Yankton-Clay SD-Union-
424 AM CDT Thu May 17 2018

This Hazardous Weather Outlook is for portions of northwest Iowa,
west central Iowa, southwest Minnesota, northeast Nebraska, east
central South Dakota, and southeast South Dakota.

.DAY ONE...Today and Tonight

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Diminishing thunderstorms may reach the outlook area Friday
morning.

Thunderstorm chances will increase again Friday afternoon and
Friday night as a front approaches the area.  While the overall
risk of severe storms is low, there will be a risk for locally
heavy rainfall due to the slow moving nature of the expected
storms.

Unfortunately, thunderstorm chances may now continue into Sunday.
While the risk of severe storms is low, locally heavy rainfall
could be possible leading to increased risks of renewed river
flooding.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

$$

SDZ038-039-050-052>054-057>060-063>065-068-180930-
Beadle-Kingsbury-Gregory-Jerauld-Sanborn-Miner-Brule-Aurora-
Davison-Hanson-Charles Mix-Douglas-Hutchinson-Bon Homme-
424 AM CDT Thu May 17 2018

This Hazardous Weather Outlook is for portions of central South
Dakota, east central South Dakota, south central South Dakota,
and southeast South Dakota.

.DAY ONE...Today and Tonight

Scattered thunderstorms will continue through mid-morning. Severe
storms are not expected, but a few storms may produce 40 mph winds
and small hail.

Thunderstorms are expected to develop over western South Dakota
this afternoon and move eastward this evening. Gradually weakening
thunderstorms may reach the Missouri River Valley after midnight
but will bring a risk of strong winds as they arrive. Thunderstorms
will continue to weaken as they reach the James River Valley.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Redevelopment of thunderstorms will again be possible Friday
afternoon and evening. A few strong storms will be possible and
will bring the risk of damaging winds, marginally severe hail, and
locally heavy rainfall into Friday evening. Thunderstorms will
likely continue into Saturday morning as a front arrives, with a
lingering risk of excessive rainfall.

The risk of thunderstorms continues Saturday and Saturday night
before decreasing on Sunday. While severe weather chances will be
low, there will be an increased risk for excessive rainfall which
could lead to minor flooding.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

$$



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