Spot Forecast
Issued by NWS Bismarck, ND
Issued by NWS Bismarck, ND
674
FNUS73 KBIS 071144
FWSBIS
Spot Forecast for Du28...Usfws
National Weather Service Bismarck ND
644 AM CDT Fri Jun 7 2024
Forecast is based on ignition time of 0900 CDT on June 07.
If conditions become unrepresentative, contact the National Weather
Service.
.DISCUSSION...
At the burn site, weather conditions should be calm at the time of
ignition, with mostly sunny skies and light and variable winds. Through
the morning and into the afternoon, cloud cover will be increasing and
winds will be shifting to northeasterly around 10 mph. Chances for
showers and a few thunderstorms begin in the early afternoon and continue
until the evening. Minimum relative humidity today will be in around
34 percent. Expect quiet weather overnight tonight before a seasonable day
on Saturday, with mostly sunny skies, northwest winds around 15 mph, and
minimum relative humidity around 30 percent.
.REST OF TODAY...
Sky/weather.........Partly sunny. Chance of rain showers starting in the
early afternoon. Slight chance of thunderstorms late
in the afternoon.
CWR.................0 percent.
Chance of pcpn......40 percent.
LAL.................1 until 1600, then 2.
Max temperature.....Around 70.
Min humidity........34 percent.
Wind (20 ft)........Light winds becoming north 6 to 11 mph late in
the morning. Gusty and erratic winds expected
near thunderstorms late in the afternoon.
Mixing height.......5500 ft AGL.
Transport winds.....West around 6 mph shifting to the north 7 to 10
mph late in the morning, then increasing to 13
to 20 mph late in the afternoon.
Smoke dispersal.....Poor (3000 knot-ft) early in the morning
increasing to good (62000 knot-ft) in the
afternoon.
Haines Index........2 to 6 or very low to high potential for large
plume dominated fire growth.
TIME (CDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........50 62 70 66 52 74 82 74 72
Weather cov..... SCH CHC CHC CHC
Weather type.... RW RW RW RW
Tstm cov........ SCH SCH
CWR.............0 0 0 0 0 0 0 0 0
Chc of pcpn (%).0 0 0 10 10 20 30 40 40
LAL.............1 1 1 1 1 1 1 2 2
Temp............58 62 65 67 67 67 68 65 65
RH..............55 47 40 34 36 37 37 45 45
20 FT wind dir..W NW N N NE NE N N N
20 FT wind spd..3 4 5 7 7 9 9 10 11
20 FT wind gust.6 8 10 11 12 13 14 15 17
Mix hgt (kft)...0.6 1.4 3.8 5.1 5.3 5.5 4.8 3.5 2.8
Transp wind dir.W W NW N N NE N N N
Transp wind spd.6 6 7 9 10 13 15 20 20
Haines index....6 6 6 5 5 4 3 2 3
Dispr kt-ft/1K..3 7 23 40 48 60 62 60 47
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming mostly clear.
Chance of rain showers and slight chance of
thunderstorms early in the evening.
CWR.................0 percent.
Chance of pcpn......30 percent.
LAL.................2 until 1900, then 1.
Min temperature.....Around 45.
Max humidity........86 percent.
Wind (20 ft)........North winds 9 to 11 mph shifting to the west 5
to 7 mph overnight. Gusty and erratic winds
expected near thunderstorms early in the
evening.
Mixing height.......500 ft AGL.
Transport winds.....North 12 to 17 mph shifting to the southwest 8
to 14 mph in the late evening and overnight.
Smoke dispersal.....Poor (3800 knot-ft).
Haines Index........3 to 6 or very low to high potential for large
plume dominated fire growth.
TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM
Sky (%).........71 26 7 10 19 21
Weather cov.....CHANCE
Weather type....RNSHWR NONE NONE NONE NONE NONE
Tstm cov........S CHC
CWR.............0 0 0 0 0 0
Chc of pcpn (%).30 0 0 0 0 0
LAL.............2 1 1 1 1 1
Temp............64 61 54 50 49 47
RH..............46 53 69 83 80 86
20 ft wind......N 11 NW 9 W 7 W 5 W 5 W 5
20 ft wind gust.18 15 12 10 10 11
Mix hgt (ft)....2100 1100 500 500 500 500
Transport wind..N 17 N 12 SW 9 SW 12 W 13 W 14
Haines index....3 4 5 5 5 6
Dispr kt-ft/1K..32 11 4 5 6 6
.SATURDAY...
Sky/weather.........Sunny.
CWR.................0 percent.
Chance of pcpn......10 percent.
LAL.................1.
Max temperature.....Around 69.
Min humidity........30 percent.
Wind (20 ft)........West winds 10 to 15 mph. Gusts up to 25 mph in
the late morning and afternoon.
Mixing height.......8500 ft AGL.
Transport winds.....West 10 to 16 mph increasing to 23 to 29 mph
late in the morning.
Smoke dispersal.....Poor (4700 knot-ft) increasing to very good
(112900 knot-ft) in the morning, then increasing
to excellent (211400 knot-ft) in the afternoon.
Haines Index........6 or high potential for large plume dominated
fire growth.
TIME (CDT) 6 AM 9 AM NOON 3 PM
Sky (%).........5 11 20 31
Weather cov.....
Weather type....NONE NONE NONE NONE
Tstm cov........
CWR.............0 0 0 0
Chc of pcpn (%).0 0 0 10
LAL.............1 1 1 1
Temp............45 55 66 67
RH..............86 64 37 30
20 FT wind......W 6G12 W 10G15 W 13G20 NW 15G22
Mix hgt (ft)....500 1400 7800 8300
Transport wind..W 12 W 15 W 25 W 29
Haines index....6 6 6 6
Dispr kt-ft/1K..5 18 172 203
$$
Forecaster...JONES
Requested by...Mireles
Type of request...PRESCRIBED
.TAG 2415757.0/BIS
.DELDT 06/07/24
.FormatterVersion 2.0.0
.EMAIL Dustin_mireles@fws.gov