529
FNUS73 KBIS 041441
FWSBIS

Spot Forecast for N Prairie...TNC
National Weather Service Bismarck ND
941 AM CDT Sat May 4 2024

Forecast is based on ignition time of 1100 CDT on May 04.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...

A partly to mostly cloudy sky can be expected through most of the
day, with cloud coverage decreasing through the day. Humidity values
around 70 percent are expected at the time of ignition, with values
gradually decreasing through the day. Minimum humidity values are
expected to be around 48 percent in the evening hours. Initially,
winds will be out of the northwest at around 7 mph, becoming lighter
as the day progresses. High temperatures today are expected to be in
the mid 50s.

.TODAY...
Sky/weather.........Mostly cloudy in the morning, then decreasing
                    clouds in the afternoon.
CWR.................0 percent.
Chance of pcpn......0 percent.
LAL.................1.
Max temperature.....Around 56.
Min humidity........48 percent.
Wind (20 ft)........Northwest winds 5 to 7 mph, but may become
                    light and variable towards evening.
Mixing height.......5200 ft AGL.
Transport winds.....Northwest 6 to 13 mph.
Smoke dispersal.....Poor (21500 knot-ft).
Haines Index........3 or very low potential for large plume
                    dominated fire growth.

TIME (CDT)      11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........83  80  77  70  62  55  43
CWR.............0   0   0   0   0   0   0
Chc of pcpn (%).0   0   0   0   0   0   0
LAL.............1   1   1   1   1   1   1
Temp............47  48  49  50  52  54  55
RH..............70  71  68  66  59  52  49
20 FT wind dir..NW  NW  NW  NW  NW  NW  NW
20 FT wind spd..7   6   6   5   5   5   5
20 FT wind gust.11  10  9   8   8   7   7
Mix hgt (kft)...2.6 2.9 3.5 3.9 4.3 4.8 5.2
Transp wind dir.NW  NW  NW  NW  NW  NW  W
Transp wind spd.13  12  8   8   8   7   7
Haines index....3   3   3   3   3   3   3

.TONIGHT...
Sky/weather.........Mostly clear.
CWR.................0 percent.
Chance of pcpn......0 percent.
LAL.................1.
Min temperature.....Around 34.
Max humidity........96 percent.
Wind (20 ft)........Light northwest winds early, becoming southeast
                    5 to 7 mph overnight.
Mixing height.......400 ft AGL.
Transport winds.....Northwest at 6 to 13 mph early, becoming
                    southeast at 6 to 13 mph overnight.
Smoke dispersal.....Poor (3100 knot-ft).
Haines Index........3 to 4 or very low to low potential for large
                    plume dominated fire growth.

.SUNDAY...
Sky/weather.........Mostly sunny.
CWR.................0 percent.
Chance of pcpn......0 percent.
LAL.................1.
Max temperature.....Around 69.
Min humidity........34 percent.
Wind (20 ft)........Southeast winds 7 to 13 mph in the morning,
                    increasing to 16 to 22 mph with gusts to around
                    31 mph in the afternoon.
Mixing height.......5600 ft AGL.
Transport winds.....Southeast at 13 to 20 mph, increasing to 24 to 31
                    mph late in the afternoon.
Smoke dispersal.....Poor (4700 knot-ft) early in the morning
                    increasing to very good (100100 knot-ft) in the
                    afternoon.
Haines Index........4 or low potential for large plume dominated
                    fire growth.

$$
Forecaster...BESSON
Requested by...Chris Gordon
Type of request...PRESCRIBED
.TAG 2413138.0/BIS
.DELDT 05/04/24
.FormatterVersion 2.0.0
.EMAIL Chris_gordon@tnc.org