756
FNUS73 KBIS 211325
FWSBIS

Spot Forecast for Williston HAZMAT Training...Williams County Emergency Mgmt.
National Weather Service Bismarck ND
825 AM CDT Thu Aug 21 2025

Forecast is based on forecast start time of 0900 CDT on August 21.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...

A few showers and possibly a thunderstorm will be possible for the next hour
or two, thereafter expect skies to clear with quiet weather. Northwest winds
will be on the increase, with gusts to 25 mph possible. Quiet weather is expected
at the incident site tonight with a northwest to north-northwest wind.


.REST OF TODAY...
Sky/weather.........Mostly cloudy through mid-morning then clearing. Slight
                    chance of showers and thunderstorms through mid-morning.
Chance of pcpn......20 percent.
Chance of thunder...20 percent.
Max temperature.....Around 82.
Min humidity........35 percent.
Surface winds.......Northwest winds 13 to 17 mph. Gusts up to 25
                    mph in the late morning and afternoon.
Transport winds.....North 16 to 25 mph.
Smoke dispersal.....Poor (17900 knot-ft) early in the morning
                    increasing to very good (107000 knot-ft) in the
                    afternoon.

TIME (CDT)      9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........75  41  23  16  3   8   3   1   5
Weather cov.....SCH SCH
Weather type....RW  RW
Tstm cov........SCH SCH
Chc of pcpn (%).20  20  10  10  10  10  10  0   0
Chc of thdr (%).20  20  10  0   0   0   0   0   0
Temp............70  72  74  76  78  79  80  81  81
RH..............71  68  62  54  48  45  41  39  37
Surface wnd dir.NW  N   N   N   N   N   NW  NW  NW
Surface wnd spd.13  16  16  16  16  16  17  16  15
Surface wnd gst.17  20  22  23  25  25  25  24  23
Transp wind dir.N   N   N   N   N   N   NW  NW  NW
Transp wind spd.16  17  18  19  21  23  25  20  16
Ventrate Cat....PR  PR  PR  FR  GD  GD  GD  VGD VGD
Dispr kt-ft/1K..18  28  38  49  65  80  93  107 106


.TONIGHT...
Sky/weather.........Mostly clear.
Chance of pcpn......0 percent.
Chance of thunder...0 percent.
Min temperature.....Around 54.
Max humidity........59 percent.
Surface winds.......North-northwest to northwest winds 6 to 14 mph.
                    Gusts to around 20 mph in the early evening.
Transport winds.....North-northwest 8 to 18 mph.
Smoke dispersal.....Good (98900 knot-ft) early in the early evening
                    decreasing to poor (3600 knot-ft) mid-evening
                    through the overnight.


TIME (CDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........4   4   4   9   14  16  20  19  19  24  13  14
Chc of pcpn (%).0   0   0   0   0   0   0   0   0   0   0   0
Chc of thdr (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............81  80  77  72  69  66  64  63  61  60  58  57
RH..............35  35  39  46  47  48  50  52  53  55  57  59
Surface wnd dir.NW  NW  NNW NNW NNW NNW NW  NW  NW  NW  NW  NW
Surface wnd spd.14  14  12  11  8   7   6   6   6   6   6   6
Surface wnd gst.22  21  17  15  13  12  9   9   8   8   9   9
Transp wind dir.NW  NW  N   N   N   N   N   N   NW  NW  NW  NW
Transp wind spd.18  16  12  10  10  9   9   8   9   8   9   10
Ventrate Cat....GD  GD  PR  PR  PR  PR  PR  PR  PR  PR  PR  PR


$$
Forecaster...SCHILD
Requested by...Carter Schroeder
Type of request...HAZMAT
.TAG 2520368.0/BIS
.DELDT 08/21/25
.FormatterVersion 2.0.0
.EMAIL mikesm@co.williams.nd.us,carters@co.williams.nd.us, jeffrey.schild@noaa.gov