790
FNUS73 KBIS 291200
FWSBIS

Spot Forecast for Soo Grade...USFWS
National Weather Service Bismarck ND
700 AM CDT Mon Apr 29 2024

Forecast is based on ignition time of 1100 CDT on April 29.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...

After a few clouds and some fog this morning, clouds will clear
out with high temperatures warming to near 60 degrees. Tuesday
will then see cloudy conditions and showers, with winds increasing
a bit out of the south.

.REST OF TODAY...

Sky/weather.........Mostly sunny.
CWR.................0 percent.
Chance of pcpn......0 percent.
Max temperature.....Around 66.
Min humidity........29 percent.
Wind (20 ft)........South winds 5 to 9 mph.
Mixing height.......8700 ft AGL.
Transport winds.....South around 8 mph shifting to the southwest 9
                    to 12 mph late in the afternoon.
Smoke dispersal.....Poor (14300 knot-ft) early in the morning
                    increasing to good (87800 knot-ft) in the
                    afternoon.
Haines Index........3 or very low potential for
                    large plume dominated fire growth.

TIME (CDT)      11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........11  10  9   15  19  43  57
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0
Chc of pcpn (%).0   0   0   0   0   10  10
Temp............54  57  60  62  64  65  65
RH..............47  40  35  32  30  29  28
20 FT wind dir..S   S   S   S   S   S   S
20 FT wind spd..7   6   6   7   8   9   8
20 FT wind gust.10  9   10  11  11  13  12
Mix hgt (kft)...2.4 3.2 4.2 6.1 7.7 8.7 8.5
Transp wind dir.SE  S   S   SW  SW  SW  SW
Transp wind spd.8   8   8   9   10  12  10
Haines index....3   3   3   3   3   3   3
Dispr kt-ft/1K..17  23  31  51  72  88  78

.TONIGHT...

Sky/weather.........Increasing clouds. Scattered rain showers early
                    in the morning.
CWR.................0 percent.
Chance of pcpn......30 percent.
Min temperature.....Around 43.
Max humidity........88 percent.
Wind (20 ft)........South winds 7 to 8 mph shifting to the
                    southeast 6 to 16 mph with gusts to around 24
                    mph early in the evening.
Mixing height.......500 ft AGL.
Transport winds.....Southwest 9 to 10 mph shifting to the southeast
                    13 to 20 mph early in the evening.
Smoke dispersal.....Good (77500 knot-ft) early in the evening
                    decreasing to poor (8100 knot-ft) late in the
                    night.
Haines Index........4 to 5 or low to moderate potential for large
                    plume dominated fire growth.

TIME (CDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........61  68  57  51  39  38  33  42  49  56  58  64
Weather cov.....                                        ISO SCT
Weather type....                                        RW  RW
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Chc of pcpn (%).10  10  0   0   0   0   0   0   10  10  20  30
Temp............65  64  61  56  52  50  49  47  46  46  45  45
RH..............29  30  36  45  52  55  58  64  68  71  72  75
20 FT wind dir..S   S   SE  SE  SE  SE  SE  SE  SE  SE  S   SE
20 FT wind spd..8   8   7   9   13  13  14  16  15  16  16  14
20 FT wind gust.11  11  11  13  19  20  20  24  22  21  22  19
Mix hgt (kft)...8.3 7.6 2.1 0.6 0.6 0.6 0.6 0.5 0.5 0.5 0.5 0.6
Transp wind dir.SW  SW  SE  SE  SE  SE  S   S   S   S   S   S
Transp wind spd.10  9   13  16  18  20  20  20  18  18  18  17
Haines index....5   5   5   5   5   5   5   5   5   5   5   4
Dispr kt-ft/1K..78  65  30  11  10  12  11  10  9   9   9   9

.TUESDAY...

Sky/weather.........Cloudy with rain showers.
CWR.................85 percent.
Chance of pcpn......90 percent.
Max temperature.....Around 53.
Min humidity........58 percent.
Wind (20 ft)........South winds 10 to 13 mph shifting to the
                    southwest 12 to 14 mph late in the afternoon.
Mixing height.......3700 ft AGL.
Transport winds.....South 17 to 21 mph shifting to the southwest 17
                    to 18 mph late in the afternoon.
Smoke dispersal.....Poor (9200 knot-ft) early in the morning
                    increasing to good (65000 knot-ft) in the
                    afternoon.
Haines Index........3 to 5 or very low to moderate potential for
                    large plume dominated fire growth.

TIME (CDT)      6 AM      9 AM      NOON      3 PM
Sky (%).........75        88        87        81
Weather cov.....SCTTRD    DEFNTE    DEFNTE    LIKELY
Weather type....RNSHWR    RNSHWR    RNSHWR    RNSHWR
Tstm cov........
CWR.............0         90        90        40
Chc of pcpn (%).40        90        90        70
Temp............44        46        49        51
RH..............78        83        77        64
20 FT wind......S 13G17   S 12G18   S 12G18   SW 13G20
Mix hgt (ft)....600       1000      1700      3200
Transport wind..S 18      S 21      SW 20     SW 17
Haines index....4         3         3         4
Dispr kt-ft/1K..12        20        31        54

$$
Forecaster...HEINERT
Requested by...calvin
Type of request...PRESCRIBED
.TAG 2412679.0/BIS
.DELDT 04/29/24
.FormatterVersion 2.0.0
.EMAIL calvin_moldenhauer@fws.gov