740
FNUS73 KDMX 231001
FWSDMX

Spot Forecast for Schrader- North Unit...Iowa DNR
National Weather Service Des Moines IA
501 AM CDT Thu May 23 2024

Forecast is based on ignition time of 1200 CDT on May 23.
If conditions become unrepresentative...contact the National Weather
Service.

An initial observation at ignition and a mid burn observation are required.

Please relay them to the National Weather Service for each prescribed burn.

.DISCUSSION...

Periods of wet weather will again occur over the region late
tonight into early Friday; late Saturday night into Monday and
possibly by next Thursday. Otherwise expect seasonal temperatures
and continuing green up with a very low grassland fire risk.

.REST OF TODAY...

Sky/weather.........Sunny (5-15 percent).
Max temperature.....Around 76.
Min humidity........40 percent.
Wind (20 ft)........South winds 16 to 20 mph.
Mixing height.......4500 ft AGL.
Transport winds.....South 20 to 25 mph.
Smoke dispersal.....Good (54000 knot-ft) early in the morning
                    increasing to excellent (92400 knot-ft) in the
                    afternoon.
GFDI................0.
Haines Index........4 or low potential for large plume dominated
                    fire growth.

TIME (CDT)      12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........3   3   4   7   8   12
Weather cov.....
Weather type....
Tstm cov........
Temp............72  73  75  76  76  76
RH..............53  49  45  42  40  40
20 FT wind dir..S   S   S   S   S   S
20 FT wind spd..16  17  18  18  18  20
20 FT wind gust.24  25  28  28  28  29
Mix hgt (kft)...3.2 3.9 4.3 4.5 4.5 4.2
Transp wind dir.S   S   S   S   S   S
Transp wind spd.20  22  22  23  23  25
GFDI............0   0   0   0   0   0
Haines index....4   4   4   4   4   4
SDspl kt-ft/100054  74  81  90  90  92

.TONIGHT...

Sky/weather.........Mostly clear (20-30 percent) then becoming
                    mostly cloudy (75-85 percent). Chance of
                    showers and thunderstorms in the evening, then
                    showers with thunderstorms likely overnight.
Min temperature.....Around 57.
Max humidity........93 percent.
Wind (20 ft)........Southeast winds 13 to 18 mph shifting to the
                    south early in the morning. Gusty and erratic
                    winds expected near thunderstorms in the
                    evening and overnight. Gusty and erratic winds
                    expected near thunderstorms after 3 am.
Mixing height.......500 ft AGL.
Transport winds.....Southeast 18 to 23 mph shifting to the
                    southwest 15 to 17 mph after 3 am.
Smoke dispersal.....Good (56200 knot-ft) early in the evening
                    decreasing to poor (6500 knot-ft) late in the
                    night.
GFDI................0.
Haines Index........4 or low potential for large plume dominated
                    fire growth.

TIME (CDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
Sky (%).........7      21     42     64     80     97
Weather cov.....       CHANCE CHANCE CHANCE DEFNTE DEFNTE
Weather type....NONE   RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR
Tstm cov........       CHANCE CHANCE CHANCE LIKELY CHANCE
Temp............75     72     66     64     63     61
RH..............40     51     68     75     87     93
20 ft wind......SE 18  SE 16  SE 16  SE 17  S 15   S 13
20 ft wind gust.28     24     24     26     23     20
Mix hgt (ft)....2800   600    500    700    500    600
Transport wind..S 23   SE 21  SE 21  S 23   S 18   S 16
GFDI............0      0      0      0      0      0
Haines index....4      4      4      4      4      4
SDspl kt-ft/100056     11     9      15     8      8

.FRIDAY...

Sky/weather.........Mostly cloudy (80-90 percent) then becoming
                    mostly sunny (25-35 percent). Rain showers and
                    chance of thunderstorms early in the morning.
Max temperature.....Around 67.
Min humidity........50 percent.
Wind (20 ft)........Southwest winds 12 to 14 mph shifting to the
                    west 15 to 21 mph in the late morning and
                    afternoon. Gusty and erratic winds expected
                    near thunderstorms early in the morning.
Mixing height.......4000 ft AGL.
Transport winds.....West 14 to 23 mph shifting to the northwest
                    around 24 mph in the afternoon.
Smoke dispersal.....Poor (11700 knot-ft) early in the morning
                    increasing to excellent (85300 knot-ft) in the
                    afternoon.
GFDI................0.
Haines Index........2 to 4 or very low to low potential for large
                    plume dominated fire growth.

TIME (CDT)      6 AM      9 AM      NOON      3 PM
Sky (%).........86        50        30        21
Weather cov.....DEFNTE
Weather type....RNSHWR    NONE      NONE      NONE
Tstm cov........CHANCE
Temp............59        58        63        65
RH..............96        100       68        53
20 FT wind......SW 12G17  W 15G23   W 20G29   W 21G31
Mix hgt (ft)....800       1700      3400      4000
Transport wind..SW 16     W 21      W 24      NW 24
GFDI............0         0         0         0
Haines index....4         3         3         2
SDspl kt-ft/100012        30        72        85

$$
Forecaster...Vachalek
Requested by...Jeff Feisel
Type of request...PRESCRIBED
.TAG 2414937.0/DMX
.DELDT 05/23/24
.FormatterVersion 2.0.0
.EMAIL jeffrey.feisel@dnr.iowa.gov