Hazardous Weather Outlook
Issued by NWS Sioux Falls, SD

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FLUS43 KFSD 211609
HWOFSD

Hazardous Weather Outlook
National Weather Service Sioux Falls SD
1109 AM CDT Fri Jul 21 2017

IAZ012-020>022-031-032-NEZ013-014-SDZ038-052>054-057>061-065>067-
069>071-221615-
Sioux-Plymouth-Cherokee-Buena Vista-Woodbury-Ida-Dixon-Dakota-
Beadle-Jerauld-Sanborn-Miner-Brule-Aurora-Davison-Hanson-McCook-
Hutchinson-Turner-Lincoln SD-Yankton-Clay SD-Union-
1109 AM CDT Fri Jul 21 2017

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

.DAY ONE...This Afternoon and Tonight

After clouds clear from west to east, heat index values will rise
to 100 to 106 degrees this afternoon with very humid conditions.

Additional thunderstorms will be possible late Friday afternoon
into early Friday evening. If storms do form between 5 pm and 9
pm, they could develop rapidly and quickly become severe with
large hail and damaging winds, especially from northeast Nebraska
and far southeast South Dakota into northwest Iowa. Hail up to
half dollar size and wind gusts to 70 mph would be the primary
threat.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

No hazardous weather is expected.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is possible, mainly between 5 pm and 10 pm.

$$

IAZ001>003-013-014-MNZ071-072-080-081-089-090-097-098-SDZ039-040-
055-056-062-221615-
Lyon IA-Osceola-Dickinson-O`Brien-Clay IA-Lincoln MN-Lyon MN-
Murray-Cottonwood-Nobles-Jackson-Pipestone-Rock-Kingsbury-
Brookings-Lake-Moody-Minnehaha-
1109 AM CDT Fri Jul 21 2017

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

.DAY ONE...This Afternoon and Tonight

After showers and thunderstorms exit extreme southeast South
Dakota and far northwest Iowa through midday Friday, it will be
quite warm and very humid this afternoon, with heat index values
topping out in the 90s.

Additional thunderstorms will be possible by late Friday
afternoon into early Friday evening. If storms do form between 5
pm and 9 pm, they could develop rapidly and quickly become severe
with large hail and damaging winds, especially from northeast
Nebraska and far southeast South Dakota into northwest Iowa. Hail
up to half dollar size and wind gusts to 70 mph would be the
primary threat.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

No hazardous weather is expected.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is possible, mainly between 5 pm and 10 pm.

$$

SDZ050-063-064-068-221615-
Gregory-Charles Mix-Douglas-Bon Homme-
1109 AM CDT Fri Jul 21 2017

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

.DAY ONE...This Afternoon and Tonight

Afternoon sunshine will bring hot and humid conditions with heat
index values in the 100 to 105 degree range.

Additional thunderstorms will be possible by late Friday
afternoon into very early Friday evening. If storms do form
between 4 pm and 8 pm, they could develop rapidly and quickly
become severe with large hail and damaging wind Hail up to half
dollar size and wind gusts to 70 mph would be the primary threat.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

No hazardous weather is expected.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is possible, mainly from 4 pm to 8 pm.

$$



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