902
FNUS73 KDMX 031134
FWSDMX

Spot Forecast for Perkins Rx...INHF
National Weather Service Des Moines IA
634 AM CDT Fri May 3 2024

Forecast is based on ignition time of 1000 CDT on May 03.
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...

Patchy fog in the vicinity early, otherwise sunshine returns.
Light south winds with relative humidity from 55 to 65% at
ignition time. Relative humidity lower to 35 to 40% by late
afternoon. Showers overnight with additional wetting rainfall
Monday afternoon through Monday night.

.REST OF TODAY...

Sky/weather.........Mostly sunny (25-35 percent).
Max temperature.....Around 71.
Min humidity........36 percent.
Wind (20 ft)........South winds 6 to 13 mph.
Mixing height.......3900 ft AGL.
Transport winds.....Southeast 10 to 18 mph shifting to the south
                    around 20 mph late in the afternoon.
Smoke dispersal.....Poor (12200 knot-ft) early in the morning
                    increasing to excellent (66900 knot-ft) in the
                    afternoon.
GFDI................0.
Haines Index........5 or moderate potential for large plume
                    dominated fire growth.

TIME (CDT)      10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........19  34  42  39  32  35  37  25
Weather cov.....
Weather type....
Tstm cov........
Temp............59  63  65  67  68  70  71  71
RH..............64  54  48  43  41  39  36  36
20 FT wind dir..S   S   S   SE  SE  SE  SE  SE
20 FT wind spd..6   7   7   8   9   12  13  13
20 FT wind gust.                10  14  18  18
Mix hgt (kft)...1.4 2.1 2.8 3.4 3.6 3.8 3.9 3.9
Transp wind dir.S   S   SE  SE  SE  SE  SE  S
Transp wind spd.10  10  10  12  15  17  18  20
GFDI............0   0   0   0   0   0   0   0
Haines index....5   5   5   5   5   5   5   5
SDspl kt-ft/100012  19  25  34  47  56  62  67

.TONIGHT...

Sky/weather.........Partly cloudy (25-35 percent) then becoming
                    mostly cloudy (70-80 percent). Chance of rain
                    showers overnight. Chance of thunderstorms
                    overnight. Rain showers after 3 am.
Min temperature.....Around 50.
Max humidity........100 percent.
Wind (20 ft)........Southeast winds 8 to 14 mph. Gusty and erratic
                    winds expected near thunderstorms overnight.
Mixing height.......400 ft AGL.
Transport winds.....Southeast 13 to 18 mph shifting to the
                    southwest around 14 mph early in the morning.
Smoke dispersal.....Good (50700 knot-ft) early in the evening
                    decreasing to poor (4900 knot-ft) late in the
                    night.
GFDI................0.
Haines Index........3 to 5 or very low to moderate potential for
                    large plume dominated fire growth.

TIME (CDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
Sky (%).........16     27     45     61     81     98
Weather cov.....                            CHANCE DEFNTE
Weather type....NONE   NONE   NONE   NONE   RNSHWR RNSHWR
Tstm cov........                            CHANCE CHANCE
Temp............70     64     57     54     53     51
RH..............41     56     69     74     80     93
20 ft wind......SE 14  SE 10  SE 9   SE 9   SE 10  SE 12
20 ft wind gust.18     14     14     14     14     16
Mix hgt (ft)....3200   500    400    400    500    500
Transport wind..S 18   SE 13  SE 14  SE 16  SE 16  S 15
GFDI............0      0      0      0      0      0
Haines index....5      5      5      5      3      3
SDspl kt-ft/100051     5      5      6      7      7

.SATURDAY...

Sky/weather.........Mostly cloudy (75-85 percent) then becoming
                    mostly sunny (35-45 percent). Chance of showers
                    and thunderstorms early in the morning.
Max temperature.....Around 65.
Min humidity........48 percent.
Wind (20 ft)........Northwest winds 9 to 17 mph. Gusty and erratic
                    winds expected near thunderstorms early in the
                    morning.
Mixing height.......4700 ft AGL.
Transport winds.....North 13 to 22 mph.
Smoke dispersal.....Poor (7200 knot-ft) early in the morning
                    increasing to excellent (85200 knot-ft) in the
                    afternoon.
GFDI................0.
Haines Index........2 to 3 or very low potential for large plume
                    dominated fire growth.

TIME (CDT)      6 AM      9 AM      NOON      3 PM
Sky (%).........99        89        73        49
Weather cov.....CHANCE    CHANCE
Weather type....RNSHWR    RNSHWR    NONE      NONE
Tstm cov........CHANCE    CHANCE
Temp............50        53        57        63
RH..............100       89        75        56
20 FT wind......NW 10G15  NW 15G21  NW 16G23  N 16G22
Mix hgt (ft)....700       1500      2700      4200
Transport wind..NW 13     N 20      N 21      N 22
GFDI............0         0         0         0
Haines index....3         3         3         2
SDspl kt-ft/10007         25        48        80

$$
Forecaster...Vachalek
Requested by...Derek Miner
Type of request...PRESCRIBED
.TAG 2413065.0/DMX
.DELDT 05/03/24
.FormatterVersion 2.0.0
.EMAIL dminer@inhf.org