⚠️ Red Flag Warning – Southern Black Hills; Fall River County Area; Custer County Plains; Pine Ridge Area; Badlands Area; Bennett County Area; Southern Campbell; Weston County Plains – Wednesday, June 17, 2026

Red Flag Warning issued June 17 at 7:26AM MDT until June 17 at 8:00PM MDT by NWS Rapid City SD

Details

…RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 8 PM
MDT THIS EVENING DUE TO GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR
SOUTHERN BLACK HILLS, FALL RIVER COUNTY AREA, CUSTER COUNTY PLAINS,
PINE RIDGE AREA, BADLANDS AREA, BENNETT COUNTY AREA, SOUTHERN
CAMPBELL, AND WESTON COUNTY PLAINS…

.A cold front moved through early this morning. Behind the cold
front, strong northwest winds from 25 to 35 mph with gusts from 40 to
55 mph are expected. Minimum relative humidity values will dip as low
as 18 percent, which is higher than normal thresholds. However, the
strong winds will make up the difference as well as antecedent D2 to
D3 drought and very dry weather over the past 1-2 weeks. Thus,
critical fire weather conditions are expected for parts of
northeastern Wyoming and southwestern South Dakota late this morning
through the early evening hours.

* AFFECTED AREA…Fire Weather Zones 315, 317, 321, 322, 325, 326,
332, and 333.

* TIMING…From 11 AM this morning to 8 PM MDT this evening.

* WINDS…Northwest winds 25 to 35 mph with gusts from 40 to 55 mph.

* RELATIVE HUMIDITY…Relative Humidity as low as 18 percent.

* IMPACTS…Any fires that develop will spread rapidly. Outdoor
burning is not recommended.

Instructions

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.

This alert was automatically posted by SkyGuard, MWSC’s severe weather alerting system. Source: National Weather Service.