Hazardous Weather Outlook
Issued by NWS Sioux Falls, SD

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FLUS43 KFSD 182048
HWOFSD

Hazardous Weather Outlook
National Weather Service Sioux Falls SD
348 PM CDT Tue Jul 18 2017

IAZ012-020>022-031-032-NEZ013-014-SDZ050-063>071-192100-
Sioux-Plymouth-Cherokee-Buena Vista-Woodbury-Ida-Dixon-Dakota-
Gregory-Charles Mix-Douglas-Hutchinson-Turner-Lincoln SD-
Bon Homme-Yankton-Clay SD-Union-
348 PM CDT Tue Jul 18 2017

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

.DAY ONE...This Afternoon and Tonight

Isolated to scattered thunderstorms may be possible late this
afternoon and early this evening. Best chances for storms will be
east of the James River. Hail to the size of half dollars and wind
gusts to 65 mph will be possible with stronger storms. While very
low, an isolated brief tornado could be possible early this
evening, primarily across northwest Iowa.  Heavy rain will also
be possible.

Isolated thunderstorms may be possible by daybreak. Severe weather
is generally not anticipated, but a few storms could contain small
hail.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

The combination of heat and humidity will persist through mid-week,
with heat index values in the 90s to near 105 across the area
through Thursday.

Isolated to scattered thunderstorms will be possible again late on
Wednesday and Wednesday night. A strong storm or two is possible,
especially east of Interstate 29. Large hail and damaging winds
are the primary risks.

Storm chances continue Friday and into the upcoming weekend. While
the risk of severe storms appears low, there remains considerable
uncertainty on the exact location and intensity of any
thunderstorm activity.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is possible after 5 pm.

$$

SDZ038-039-052>054-057>060-192100-
Beadle-Kingsbury-Jerauld-Sanborn-Miner-Brule-Aurora-Davison-
Hanson-
348 PM CDT Tue Jul 18 2017

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...This Afternoon and Tonight

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

The combination of heat and humidity will persist through mid-week,
with heat index values in the 90s to near 105 across the area
Wednesday and again on Thursday.

Isolated to scattered thunderstorms will be possible again late on
Wednesday and Wednesday night. A strong storm or two is possible,
especially east of the James River Valley. Large hail and
damaging winds are the primary risks.

Storm chances continue Friday and into the upcoming weekend. While
the risk of severe storms appears low, there remains considerable
uncertainty on the exact location and intensity of any
thunderstorm activity.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

$$

IAZ001>003-013-014-MNZ071-072-080-081-089-090-097-098-SDZ040-055-
056-061-062-192100-
Lyon IA-Osceola-Dickinson-O`Brien-Clay IA-Lincoln MN-Lyon MN-
Murray-Cottonwood-Nobles-Jackson-Pipestone-Rock-Brookings-Lake-
Moody-McCook-Minnehaha-
348 PM CDT Tue Jul 18 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

Isolated thunderstorms will be possible late this afternoon and
early into the evening. An increased risk for isolated strong to
severe storms will be focused south of Interstate 90 and east of
Interstate 29 this evening. The primary severe weather risk will
be half dollar size hail and winds to 65 mph.

An isolated thunderstorm is possible by daybreak Wednesday. While
severe storms are not anticipated, small hail could be possible.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

The combination of heat and humidity will persist through mid-week,
with heat index values in the 90s to near 105 across the area
through Thursday.

Scattered thunderstorms will be possible again late on Wednesday
and Wednesday night. The highest risk of thunderstorm activity
will be focused across the Buffalo Ridge areas, where a complex
of storms may track Wednesday evening. Large hail up to half
dollar size and damaging winds up to 70 mph are the primary risks.

Storm chances continue Friday and into the upcoming weekend. While
the risk of severe storms appears low, there remains considerable
uncertainty on the exact location and intensity of any
thunderstorm activity.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.

$$



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