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000
FNUS73 KBIS 231447
FWSBIS

Spot Forecast for Maclean Bottoms Prescribed burn...ND Game and Fish
National Weather Service Bismarck ND
947 AM CDT Tue Apr 23 2024

Forecast is based on ignition time of 0800 CDT on April 24.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...

Overnight recoveries tonight will be good allowing some moisture to
return by Wednesday morning. Wednesday afternoon minimum relative
humidity will range around 25 percent. Winds are forecast to shift
out of the south by early Wednesday morning. Wind speeds are forecast
to pick up around 10 to 15 mph by the afternoon with gusts up to 25 mph.
High temperatures are forecast to reach the mid 60s with partly cloudy
conditions which could limit mixing until the afternoon hours.

Thursday temperatures are forecast to warm up into the 70s, but minimum
relative humidity will increase to around 40 percent. Winds will remain
around 15 mph out of the south with afternoon gusts up to 25 mph.
There is a chance for thunderstorms moving in from the southwest
Thursday afternoon through Thursday night. Gusty erratic winds are
possible from thunderstorms.


.WEDNESDAY...

Sky/weather.........Mostly sunny.
CWR.................0 percent.
Chance of pcpn......0 percent.
LAL.................1.
Max temperature.....Around 66.
Min humidity........26 percent.
Wind (20 ft)........South winds 10 to 16 mph.
Mixing height.......5800 ft AGL.
Transport winds.....South 12 to 21 mph.
Smoke dispersal.....Poor (4400 knot-ft) early in the morning
                    increasing to very good (104100 knot-ft) in the
                    afternoon.
Haines Index........4 or low potential for large plume dominated
                    fire growth.

TIME (CDT)      8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........22  25  36  57  60  63  64  64  65  56
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0
Chc of pcpn (%).0   0   0   0   0   0   0   0   0   0
LAL.............1   1   1   1   1   1   1   1   1   1
Temp............36  41  49  54  59  62  64  66  66  66
RH..............72  65  52  41  34  30  27  26  27  28
20 FT wind dir..SE  S   S   S   S   S   S   S   S   S
20 FT wind spd..7   9   10  10  12  14  15  16  16  16
20 FT wind gust.9   12  12  14  14  15  17  18  18  18
Mix hgt (kft)...0.4 0.8 1.2 2.1 3.6 5.0 5.2 5.5 5.8 4.9
Transp wind dir.S   S   S   S   S   S   S   S   S   S
Transp wind spd.12  14  15  16  18  20  21  21  21  21
Haines index....4   4   4   4   4   4   4   4   4   4
Dispr kt-ft/1K..4   9   15  30  55  84  93  100 104 86

.WEDNESDAY NIGHT...

Sky/weather.........Partly cloudy.
CWR.................0 percent.
Chance of pcpn......10 percent.
LAL.................1.
Min temperature.....Around 42.
Max humidity........82 percent.
Wind (20 ft)........Southeast winds 13 to 17 mph. Gusts up to 29
                    mph increasing to 30 mph overnight.
Mixing height.......600 ft AGL.
Transport winds.....South 15 to 20 mph.
Smoke dispersal.....Good (67500 knot-ft) early in the evening
                    decreasing to poor (7400 knot-ft) late in the
                    night.
Haines Index........3 to 5 or very 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 (%).........46  37  30  23  16  24  31  39  31  24  16  16
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Chc of pcpn (%).0   10  10  10  10  10  10  10  10  10  10  10
LAL.............1   1   1   1   1   1   1   1   1   1   1   1
Temp............66  64  61  57  54  52  50  49  48  47  46  44
RH..............29  32  37  43  50  56  61  66  69  71  73  78
20 FT wind dir..S   S   S   SE  SE  SE  SE  SE  SE  SE  SE  SE
20 FT wind spd..15  15  15  15  15  16  17  17  16  15  14  13
20 FT wind gust.17  17  19  20  22  25  26  26  25  22  20  19
Mix hgt (kft)...4.0 3.2 2.3 1.4 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6
Transp wind dir.S   S   S   SE  SE  SE  S   S   S   S   S   S
Transp wind spd.20  18  17  17  17  18  20  20  18  17  16  15
Haines index....3   3   3   3   3   4   4   5   5   5   5   5
Dispr kt-ft/1K..68  50  35  22  9   10  10  11  10  9   8   7

.THURSDAY...

Sky/weather.........Mostly sunny. Slight chance of rain in the
                    afternoon.
CWR.................0 percent.
Chance of pcpn......20 percent.
Max temperature.....Around 74.
Min humidity........40 percent.
Wind (20 ft)........Southeast winds 11 to 18 mph shifting to the
                    south 21 to 22 mph late in the afternoon.
Mixing height.......5100 ft AGL.
Transport winds.....South 14 to 23 mph increasing to 25 to 26 mph
                    late in the afternoon.
Smoke dispersal.....Poor (6800 knot-ft) early in the morning
                    increasing to good (86100 knot-ft) in the
                    afternoon increasing to very good (110600
                    knot-ft) late in the afternoon.
Haines Index........4 to 6 or low to high potential for large plume
                    dominated fire growth.

TIME (CDT)      6 AM      9 AM      NOON      3 PM
Sky (%).........16        22        35        43
Weather cov.....                              S CHC
Weather type....NONE      NONE      NONE      RAIN
Tstm cov........
CWR.............0         0         0         0
Chc of pcpn (%).10        0         0         20
Temp............43        51        64        72
RH..............82        67        49        40
20 FT wind......SE 12G17  S 12G14   S 15G20   S 21G25
Mix hgt (ft)....600       1200      2100      4300
Transport wind..S 14      S 15      S 17      S 23
Haines index....6         6         5         4
Dispr kt-ft/1K..7         15        32        86

$$
Forecaster...JOHNSON
Requested by...Levi Jacobson
Type of request...PRESCRIBED
.TAG 2411964.0/BIS
.DELDT 04/23/24
.FormatterVersion 2.0.0
.EMAIL lcjacobson@nd.gov