Spot Forecast
Issued by NWS Bismarck, ND
Issued by NWS Bismarck, ND
337
FNUS73 KBIS 091237
FWSBIS
Spot Forecast for 7-2...TNC
National Weather Service Bismarck ND
737 AM CDT Thu May 9 2024
Forecast is based on ignition time of 1100 CDT on May 09.
If conditions become unrepresentative, contact the National Weather
Service.
.DISCUSSION...
Look for partly to mostly cloudy skies today, with more clouds than sun
expected by ignition time. A north wind 5 to 10 mph will increase to 10 to 15 mph
by ignition time with winds 15 to 20 mph during the afternoon, with gusts to around
20 mph during max heating in the mid to late afternoon. Humidity values this afternoon
should drop to around 40 percent. Mixing height is expected to be around 7700 feet
at max heating with very good smoke dispersal.
After a few isolated showers this evening, a weak front will push through tonight.
This will bring dry and breezier conditions on Friday. Humidity values could lower
to around 34 percent, while northwest winds around 20 mph gusting to near 30 mph are
forecast. Mainly clear skies and seasonable temperatures are also expected for Friday.
.REST OF TODAY...
Sky/weather.........Mostly sunny.
CWR.................0 percent.
Chance of pcpn......10 percent.
LAL.................1.
Max temperature.....Around 68.
Min humidity........39 percent.
Wind (20 ft)........North winds 10 to 15 mph by ignition time and 15 to 20 mph
during the afternoon.
Mixing height.......7700 ft AGL.
Transport winds.....North 18 to 21 mph.
Smoke dispersal.....Good (94700 knot-ft) early in the morning
increasing to very good (138400 knot-ft) in the
afternoon.
Haines Index........3 to 5 or very low to moderate potential for
large plume dominated fire growth.
TIME (CDT) 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........41 38 36 41 45 41 45
Weather cov.....
Weather type....
Tstm cov........
CWR.............0 0 0 0 0 0 0
Chc of pcpn (%).0 0 0 0 10 10 10
LAL.............1 1 1 1 1 1 1
Temp............61 63 65 66 67 68 67
RH..............51 48 45 43 42 39 42
20 FT wind dir..N N N N N N N
20 FT wind spd..11 12 13 14 15 14 13
20 FT wind gust.15 15 15 17 118 19 17
Mix hgt (kft)...5.6 6.4 7.1 7.3 7.6 7.7 7.2
Transp wind dir.N N N N N N N
Transp wind spd.20 20 18 20 21 21 21
Haines index....4 3 3 4 4 5 5
Dispr kt-ft/1K..95 110 114 125 136 138 130
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of rain showers in
the evening.
CWR.................0 percent.
Chance of pcpn......20 percent.
LAL.................1.
Min temperature.....Around 45.
Max humidity........77 percent.
Wind (20 ft)........Northwest winds 7 to 12 mph.
Mixing height.......400 ft AGL.
Transport winds.....Northwest 13 to 20 mph.
Smoke dispersal.....Very good (117200 knot-ft) early in the evening
decreasing to poor (21400 knot-ft) late in the
evening and overnight.
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 (%).........44 45 49 47 49 49 48 40 37 35 14 6
Weather cov..... SCH SCH SCH SCH SCH
Weather type.... RW RW RW RW RW
Tstm cov........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
Chc of pcpn (%).10 20 20 20 20 20 10 10 10 10 0 0
LAL.............1 1 1 1 1 1 1 1 1 1 1 1
Temp............67 66 63 59 56 56 55 54 51 49 48 47
RH..............43 45 52 60 69 72 74 74 77 74 71 71
20 FT wind dir..N N N NW NW NW NW NW NW NW NW NW
20 FT wind spd..12 12 9 9 7 9 10 12 11 12 11 12
20 FT wind gust.17 15 14 13 11 13 15 17 17 17 17 19
Mix hgt (kft)...6.9 6.3 1.6 0.6 0.4 0.5 0.5 0.5 0.4 0.5 0.4 0.5
Transp wind dir.N N N N NW NW N NW NW NW NW NW
Transp wind spd.20 20 15 14 13 14 15 14 15 15 16 16
Haines index....5 5 5 5 5 5 5 5 5 4 4 4
Dispr kt-ft/1K..117 106 21 7 5 6 6 6 6 6 6 7
.FRIDAY...
Sky/weather.........Sunny.
CWR.................0 percent.
Chance of pcpn......0 percent.
LAL.................1.
Max temperature.....Around 68.
Min humidity........34 percent.
Wind (20 ft)........Northwest winds 12 to 18 mph with gusts to
around 25 mph.
Mixing height.......8400 ft AGL.
Transport winds.....Northwest 17 to 25 mph increasing to 25 to 29
mph late in the morning.
Smoke dispersal.....Poor (7000 knot-ft) early in the morning
increasing to good (60900 knot-ft) in the
afternoon increasing to very good (127500
knot-ft) early in the morning increasing to
excellent (201000 knot-ft) in the afternoon
late in the morning.
Haines Index........4 to 5 or low to moderate potential for large
plume dominated fire growth.
TIME (CDT) 6 AM 9 AM NOON 3 PM
Sky (%).........7 27 32 25
Weather cov.....
Weather type....NONE NONE NONE NONE
Tstm cov........
CWR.............0 0 0 0
Chc of pcpn (%).0 0 0 0
LAL.............1 1 1 1
Temp............46 54 63 66
RH..............71 54 39 34
20 FT wind......NW 12G18 NW 16G22 NW 17G24 NW 17G24
Mix hgt (ft)....500 1300 6500 8200
Transport wind..NW 17 N 22 NW 29 NW 28
Haines index....4 5 5 5
Dispr kt-ft/1K..7 25 161 200
$$
Forecaster...HAMILTON
Requested by...Chris Gordon
Type of request...PRESCRIBED
.TAG 2413584.0/BIS
.DELDT 05/09/24
.FormatterVersion 2.0.0
.EMAIL chris_gordon@tnc.org