623
FNUS73 KBIS 061226
FWSBIS

Spot Forecast for Eddy WPA...USFWS
National Weather Service Bismarck ND
726 AM CDT Fri Jun 6 2025

Forecast is based on ignition time of 1200 CDT on June 06.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...

It should be a relatively quiet weather day at the burn site
today. By the ignition time, it should be mostly sunny, but some
smoke aloft from distant wildfires may keep the sky a bit hazy.
The high should rise to around 70 degrees with afternoon humidity
dropping to around 46 percent. Winds will be relatively light out
of the south, generally 7 to 9 mph, maybe increasing just a little
bit tonight as humidity recovers to around 89 percent.

Winds will be stronger tomorrow as a cold front approaches,
shifting winds from out of the southwest to out of the west.
Sustained values up to 20 mph and gusts to 27 mph will be possible
through the day. Some showers and thunderstorms are likely to
accompany this cold front as it moves through in the afternoon
with a stronger storm or two possible in the general area. Hail to
the size of ping pong balls and gusty/erratic winds up to 60 mph
would be the main hazards if one of the strongest storms can move
overhead. The chance for wetting rain on Saturday will increase to
around 77 percent in the afternoon.

.REST OF TODAY...

Sky/weather.........Mostly sunny.
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of thunder...2 percent.
Max temperature.....Around 70.
Min humidity........46 percent.
Wind (20 ft)........South winds 7 to 9 mph.
Mixing height.......5600 ft AGL.
Transport winds.....South 8 to 10 mph.
Smoke dispersal.....Poor (27900 knot-ft) early in the morning
                    increasing to fair (50000 knot-ft) in the
                    afternoon.

TIME (CDT)      12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........30  30  30  31  30  30
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0
Chc of pcpn (%).0   0   0   0   0   0
Chc of thdr (%).0   0   0   0   0   0
Temp............66  67  68  69  70  70
RH..............54  52  51  49  46  46
20 FT wind dir..S   S   S   S   S   S
20 FT wind spd..7   8   9   9   9   9
20 FT wind gust.11  12  13  14  14  14
Mix hgt (kft)...4.0 4.8 5.1 5.3 5.6 5.5
Transp wind dir.SE  SE  S   S   S   S
Transp wind spd.8   9   9   9   10  10
Dispr kt-ft/1K..28  38  41  42  50  49

.TONIGHT...

Sky/weather.........Partly cloudy.
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of thunder...1 percent.
Min temperature.....Around 52.
Max humidity........89 percent.
Wind (20 ft)........South winds 8 to 12 mph.
Mixing height.......400 ft AGL.
Transport winds.....South 9 to 16 mph.
Smoke dispersal.....Poor (3700 knot-ft).

TIME (CDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........30  30  30  33  36  34  31  30  30  30  30  30
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
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............69  69  67  63  59  58  56  55  54  54  53  53
RH..............47  47  54  62  69  72  77  80  83  83  86  86
20 FT wind dir..S   S   S   S   S   S   S   S   S   S   S   S
20 FT wind spd..9   9   8   8   9   9   9   9   10  10  11  12
20 FT wind gust.14  13  12  12  12  13  13  14  14  15  15  18
Mix hgt (kft)...4.8 4.4 1.4 0.5 0.5 0.4 0.4 0.4 0.4 0.4 0.4 0.5
Transp wind dir.S   S   S   S   S   S   S   S   S   S   S   S
Transp wind spd.9   9   9   9   9   10  12  14  14  14  16  16
Dispr kt-ft/1K..39  35  11  4   4   4   4   5   5   5   6   7

.SATURDAY...

Sky/weather.........Mostly sunny then becoming partly sunny. Rain
                    showers with thunderstorms likely in the
                    afternoon.
CWR.................0 percent increasing to 77 percent in the
                    afternoon.
Chance of pcpn......80 percent.
Chance of thunder...65 percent.
Max temperature.....Around 76.
Min humidity........47 percent.
Wind (20 ft)........Southwest winds 12 to 20 mph with gusts to
                    around 27 mph shifting to the west late in the
                    afternoon. Gusty and erratic winds expected
                    near thunderstorms in the afternoon.
Mixing height.......5200 ft AGL.
Transport winds.....Southwest 17 to 24 mph shifting to the west 22
                    to 23 mph late in the afternoon.
Smoke dispersal.....Poor (7900 knot-ft) early in the morning
                    increasing to good (72700 knot-ft) in the
                    early afternoon increasing to very good
                    (109800 knot-ft) late in the
                    afternoon.

TIME (CDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........30  42  39  36  31  52  63  74  70  67  63  61
Weather cov.....                            DEF DEF DEF DEF DEF
Weather type....                            RW  RW  RW  RW  RW
Tstm cov........                            LKY LKY LKY LKY LKY
CWR.............0   0   0   0   0   0   0   80  80  80  80  80
Chc of pcpn (%).0   0   0   0   0   0   0   80  80  80  80  80
Chc of thdr (%).0   0   0   0   0   0   0   70  70  70  70  70
Temp............52  54  59  63  67  70  72  73  74  74  73  71
RH..............89  83  75  70  61  57  52  48  47  49  51  54
20 FT wind dir..S   S   S   S   S   S   SW  SW  SW  SW  SW  W
20 FT wind spd..12  12  14  15  16  17  18  19  20  20  20  19
20 FT wind gust.19  19  20  22  24  25  26  26  27  27  27  26
Mix hgt (kft)...0.5 0.6 0.8 1.6 2.3 2.6 3.1 3.5 5.2 5.1 4.9 4.1
Transp wind dir.S   S   SW  SW  SW  SW  SW  SW  SW  W   W   W
Transp wind spd.17  17  18  22  22  22  23  24  24  24  23  22
Dispr kt-ft/1K..8   9   13  31  43  49  62  73  110 105 99  77

$$
Forecaster...HARGROVE
Requested by...Terry Gwilliams
Type of request...PRESCRIBED
.TAG 2515447.0/BIS
.DELDT 06/06/25
.FormatterVersion 2.0.0
.EMAIL terry_gwilliams@fws.gov