Hazardous Weather Outlook
Issued by NWS Sioux Falls, SD

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FLUS43 KFSD 161643
HWOFSD

Hazardous Weather Outlook
National Weather Service Sioux Falls SD
1143 AM CDT Tue May 16 2017

MNZ071-072-SDZ038>040-052>060-171645-
Lincoln MN-Lyon MN-Beadle-Kingsbury-Brookings-Jerauld-Sanborn-
Miner-Lake-Moody-Brule-Aurora-Davison-Hanson-
1143 AM CDT Tue May 16 2017

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

.DAY ONE...This Afternoon and Tonight

An isolated thunderstorm may arrive late this evening and into the
overnight hours of Wednesday. An isolated strong to severe storm
may be possible, with large hail the primary risk.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Additional showers and thunderstorms will be possible Wednesday,
but at this time, any storms that develop on Wednesday should not
become severe.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed tonight.

$$

IAZ001>003-012-MNZ080-081-089-090-097-098-SDZ050-061>070-171645-
Lyon IA-Osceola-Dickinson-Sioux-Murray-Cottonwood-Nobles-Jackson-
Pipestone-Rock-Gregory-McCook-Minnehaha-Charles Mix-Douglas-
Hutchinson-Turner-Lincoln SD-Bon Homme-Yankton-Clay SD-
1143 AM CDT Tue May 16 2017

This Hazardous Weather Outlook is for portions of northwest Iowa,
southwest Minnesota, south central South Dakota, and southeast
South Dakota.

.DAY ONE...This Afternoon and Tonight

Thunderstorms are expected to form just south of the outlook area
across eastern Nebraska and western Iowa late Tuesday afternoon
after 6pm. These storms will then begin to lift northward into the
evening hours crossing over the frontal boundary.

While the greatest severe weather risk has shifted slightly
southward today and focusing on areas along or south of the
Highway 20 corridor, as these thunderstorms lift northward towards
Interstate 90, there could be a lingering strong to severe storm
risk. The primary risks will be quarter size hail with wind gusts
up to 60 mph possible. These thunderstorms may also bring heavy
rain into the area by Wednesday morning.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Additional showers and thunderstorms will be possible Wednesday,
but at this time, any storms that develop on Wednesday should not
become severe. Rainfall totals by Thursday morning may approach 1
to 3 inches and may lead to minor flooding.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed tonight.

$$

IAZ013-014-020>022-031-032-NEZ013-014-SDZ071-171645-
O`Brien-Clay IA-Plymouth-Cherokee-Buena Vista-Woodbury-Ida-Dixon-
Dakota-Union-
1143 AM CDT Tue May 16 2017

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

.DAY ONE...This Afternoon and Tonight

Thunderstorms may try to form along a frontal boundary situated
just south of the outlook area in eastern Nebraska and western
Iowa after 6pm. These thunderstorms will attempt to lift northward
through the evening and overnight hours.

Scattered strong to even severe thunderstorms are possible as this
activity develops with the primary risks of golf ball size hail
and winds to 70 mph. At this time the tornado risk is low. These
thunderstorms will continue to lift north and east through the
night, bringing a risk of heavy rain to the region.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Additional showers and thunderstorms will be possible Wednesday.
Depending on how much instability can grow, portions of
northwestern Iowa may see a risk for a strong to severe
thunderstorm featuring large hail.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed tonight.

$$



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