Hazardous Weather Outlook
Issued by NWS Sioux Falls, SD

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FLUS43 KFSD 251027
HWOFSD

Hazardous Weather Outlook
National Weather Service Sioux Falls SD
527 AM CDT Tue Jul 25 2017

MNZ071-072-080-081-097-098-SDZ038>040-050-052>066-068-261030-
Lincoln MN-Lyon MN-Murray-Cottonwood-Pipestone-Rock-Beadle-
Kingsbury-Brookings-Gregory-Jerauld-Sanborn-Miner-Lake-Moody-
Brule-Aurora-Davison-Hanson-McCook-Minnehaha-Charles Mix-Douglas-
Hutchinson-Turner-Bon Homme-
527 AM CDT Tue Jul 25 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...Today and Tonight

Warm and humid conditions will set the stage for thunderstorms
to erupt late this afternoon into early evening along a line from
Chamberlain to Huron to Marshall. Initial more isolated storms
will be capable of hail up to 2 inches in diameter and wind gusts
to 75 mph. An isolated tornado will be possible, mainly along the
highway 14 corridor from Huron to Marshall between 6 pm and 10 pm.
Storms will become more widespread through the evening, with the
threat evolving toward damaging wind gusts, with the storm threat
area gradually shifting southeast toward Interstate 90 toward and
after midnight. Storms will also bring a threat of locally heavy
rainfall, with potential for up to 2 to 4 inches of rain and flash
flooding in some locations.

Heat index values from the James River valley westward will reach
a very uncomfortable and dangerous 100 to 105 degrees for a few
hours this afternoon.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is likely after 5 pm, but closer to 10 pm in
the tri-state area.

$$

IAZ001>003-012-013-020-031-MNZ089-090-NEZ013-014-SDZ067-069>071-
261030-
Lyon IA-Osceola-Dickinson-Sioux-O`Brien-Plymouth-Woodbury-Nobles-
Jackson-Dixon-Dakota-Lincoln SD-Yankton-Clay SD-Union-
527 AM CDT Tue Jul 25 2017

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

.DAY ONE...Today and Tonight

While there is a small chance of thunderstorms by late evening,
the better chance for thunderstorms is expected after midnight.
The main threat with storms will be damaging wind gusts to 70 mph,
but a few storms will be capable of producing quarter size hail
and periods of heavy rainfall.

Heat index values through the Missouri River valley will reach
a very uncomfortable and dangerous near 100 degrees for a few
hours this afternoon.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will be possible after 10 pm.

$$

IAZ014-021-022-032-261030-
Clay IA-Cherokee-Buena Vista-Ida-
527 AM CDT Tue Jul 25 2017

This Hazardous Weather Outlook is for portions of northwest Iowa
and west central Iowa.

.DAY ONE...Today and Tonight

Thunderstorms will be possible by late night. While severe weather
is unlikely, a few storms could produce hail up to quarter size
and winds to 60 mph.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Thunderstorms will be likely on Wednesday. An isolated severe
storm is possible, with the main threats quarter sized hail and
60 mph wind gusts.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today and tonight.

$$



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