387
FNUS73 KBIS 281940
FWSBIS

Spot Forecast for Whitetail Creek...USWFS
National Weather Service Bismarck ND
240 PM CDT Fri Aug 28 2026

Forecast is based on forecast start time of 1500 CDT on August 28.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...

A weak frontal boundary will move east into western North Dakota later
today and this evening, resulting in increasing cloud cover,
chances for showers and thunderstorms, and winds becoming lighter.
Precipitation chances will be relatively low, and more scattered
versus widespread. Dry weather is then expected for later tonight
and through Saturday afternoon. Warm temperatures today in the mid
to upper 80s will continue on Saturday, along with afternoon
percent relative humidity bottoming out in the mid to upper 30s
both this afternoon and for tomorrow.


.REST OF TODAY...

Sky/weather.........Becoming mostly cloudy. Slight chance of showers
                    and thunderstorms late in the afternoon.
CWR.................4 percent.
Chance of pcpn......20 percent.
Chance of thunder...20 percent.
Max temperature.....Around 88.
Min humidity........35 percent.
Wind (20 ft)........Southerly winds 7 to 11 mph, with gusts up to
                    around 15 mph this afternoon. Gusty and erratic
                    winds possible near any thunderstorm.
Mixing height.......5100 ft AGL.
Transport winds.....South 9 to 12 mph.
Smoke dispersal.....Fair (42600 knot-ft) this afternoon.

TIME (CDT)      3PM 4PM 5PM
Sky (%).........50  77  85
Weather cov.....        SCH
Weather type....        RW
Tstm cov........        SCH
CWR.............0   0   0
Chc of pcpn (%).10  10  20
Chc of thdr (%).10  10  20
Temp............84  86  87
RH..............38  35  35
20 FT wind dir..SSE SSE S
20 FT wind spd..6   5   5
20 FT wind gust.14  15  15
Mix hgt (kft)...4.3 4.7 5.1
Transp wind dir.S   S   S
Transp wind spd.12  10  9
Dispr kt-ft/1K..35  43  41

.TONIGHT...

Sky/weather.........Mostly cloudy. Chance of showers and slight
                    chance of thunderstorms in the evening.
CWR.................12 percent decreasing to 2 percent after sunset.
Chance of pcpn......30 percent.
Chance of thunder...20 percent.
Min temperature.....Around 63.
Max humidity........78 percent.
Wind (20 ft)........Southerly winds 5 to 6 mph, becoming light and
                    variable late this evening and overnight. Gusty
                    and erratic winds possible near thunderstorms
                    in the evening.
Mixing height.......500 ft AGL.
Transport winds.....South 8 to 12 mph shifting to the west around 8
                    mph overnight, then shifting to the northwest
                    after 3 am.
Smoke dispersal.....Poor (2900 knot-ft).

TIME (CDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........83  88  90  95  97  97  85  85  86  79  71  59
Weather cov.....SCH CHC SCH SCH
Weather type....RW  RW  RW  RW
Tstm cov........SCH SCH SCH SCH
CWR.............0   10  10  10  5    0   0   0   0   0   0   0
Chc of pcpn (%).30  30  20  20  10  10  10  10  10  10  10  10
Chc of thdr (%).20  20  20  20  10  10  10  10  10  10  10  10
Temp............86  84  82  79  76  73  72  70  69  68  66  66
RH..............40  44  49  52  58  62  64  66  68  70  73  73
20 FT wind dir..S   SE  S   SW  S   SE  SW  SW  SW  SW  W   N
20 FT wind spd..6   6   5   5   5   5   5   5   4   4   4   3
20 FT wind gust.12  11  10  9   9   9   8   8   7   6   6   6
Mix hgt (kft)...4.6 2.3 0.8 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
Transp wind dir.S   S   S   S   S   S   S   S   SW  W   NW  NE
Transp wind spd.9   9   12  10  10  10  9   8   8   8   8   7
Dispr kt-ft/1K..37  19  8   5   4   5   4   3   3   3   3   3

.SATURDAY...

Sky/weather.........Partly to mostly cloudy.
CWR.................5 percent.
Chance of pcpn......10 percent.
Chance of thunder...10 percent.
Max temperature.....Around 86.
Min humidity........39 percent.
Wind (20 ft)........Light winds becoming southwest around 5 mph
                    late in the morning, then shifting to the
                    southeast and increasing to 8 to 9 mph in the
                    afternoon.
Mixing height.......6600 ft AGL.
Transport winds.....North around 7 mph shifting to the east 7 to 9
                    mph in the late morning and early afternoon,
                    then shifting to the south late in the
                    afternoon.
Smoke dispersal.....Poor (2400 knot-ft) early in the morning
                    increasing to good (66200 knot-ft) in the
                    afternoon.

TIME (CDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........65  69  64  68  76  66  73  82  82  64  78  60
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   10  10
Chc of pcpn (%).0   0   0   0   0   0   0   0   10  10  10  10
Chc of thdr (%).0   0   0   0   0   0   0   0   10  10  10  10
Temp............64  63  64  68  73  76  79  81  82  82  82  82
RH..............78  78  78  73  62  56  49  44  43  43  41  41
20 FT wind dir..W   SW  W   W   SW  SW  E   SE  SE  S   SE  E
20 FT wind spd..3   3   3   3   4   5   6   7   7   8   9   9
20 FT wind gust.6   6   6   6   7   9   10  12  13  14  14  15
Mix hgt (kft)...0.5 0.5 0.4 0.4 0.8 1.3 2.3 3.6 4.7 5.8 6.6 6.3
Transp wind dir.N   NW  N   E   E   E   E   E   SE  SE  S   S
Transp wind spd.7   7   7   7   7   8   9   9   9   9   12  12
Dispr kt-ft/1K..3   3   2   3   5   9   18  29  38  46  66  63

$$
Forecaster...HEINERT
Requested by...Rachel
Type of request...WILDFIRE
.TAG 2620822.0/BIS
.DELDT 08/28/26
.FormatterVersion 2.0.0
.EMAIL mtmcc@firenet.gov