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Elev 4068 ft, 43.89 °N, 103.42 °W

Keystone, SD Severe Weather Alertstar_ratehome

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Personal Weather Station
Location: Keystone, SD
Elevation: 4068ft
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Red Flag Warning
Issued: 9:22 AM Apr. 12, 2026 – National Weather Service
...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING
FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES
314, 315, 317, 320, 321, 322, 324, 325, 326, 329, AND 332...

* AFFECTED AREA...Fire Weather Zones 314 Northern Campbell, 315
Southern Campbell, 317 Weston County Plains, 320 Central Black
Hills, 321 Southern Black Hills, 322 Fall River County Area,
324 Eastern Foot Hills, 325 Custer County Plains, 326 Pine
Ridge Area, 329 West Central Plains and 332 Badlands Area.

* WINDS...West 10 to 20 mph with gusts up to 35 mph.

* RELATIVE HUMIDITY...As low as 10 percent.

* IMPACTS...The combination of gusty winds and low relative
humidity will produce critical fire weather conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. A combination of
strong winds, low relative humidity, and warm temperatures can
contribute to extreme fire behavior.

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