207
FNUS73 KDMX 131230
FWSDMX

Spot Forecast for Diamond Lake WA Rx Burns...Poweshiek County Conservation Board
National Weather Service Des Moines IA
730 AM CDT Wed Aug 13 2025

Forecast is based on ignition time of 0900 CDT on August 13.
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...

Dry conditions are expected today with sunny skies and highs in
the low 80s. Winds will be light out of the north, shifting more
easterly by the evening, with minimum RH values around 50%.

.REST OF TODAY...

Sky/weather.........Sunny (0-10 percent).
Max temperature.....Around 80.
Min humidity........52 percent.
Wind (20 ft)........Light winds.
Mixing height.......5100 ft AGL.
Transport winds.....North 6 to 8 mph.
Smoke dispersal.....Poor (6300 knot-ft) early in the morning
                    increasing to good (35800 knot-ft) in the
                    afternoon.
GFDI................0.

TIME (CDT)      9 AM         1 PM         5 PM
Sky (%).........5            4            4
Weather cov.....
Weather type....NONE         NONE         NONE
Tstm cov........
Temp............69           78           80
RH..............78           56           54
20 FT wind......N 3          N 3G9        N 3G6
Mix hgt (ft)....900          4100         4600
Transport wind..N 8          N 8          N 6
GFDI............0            0            0
Smoke Dispersal.6            29           23
Smoke Cat.......POOR         POOR         POOR

.TONIGHT...

Sky/weather.........Mostly clear (5-15 percent).
Min temperature.....Around 60.
Max humidity........90 percent.
Wind (20 ft)........Light winds.
Mixing height.......400 ft AGL.
Transport winds.....Northeast 3 to 5 mph shifting to the east 5 to
                    7 mph in the late evening and overnight.
Smoke dispersal.....Poor (1200 knot-ft).
GFDI................0.

TIME (CDT)      6 PM         10 PM        2 AM
Sky (%).........3            6            5
Weather cov.....
Weather type....NONE         NONE         NONE
Tstm cov........
Temp............79           68           63
RH..............56           81           90
20 FT wind......NE 2G6       E 2G5        E 2G5
Mix hgt (ft)....3100         400          400
Transport wind..N 5          E 5          E 6
GFDI............0            0            0
Smoke Dispersal.12           2            2
Smoke Cat.......POOR         POOR         POOR

.THURSDAY...

Sky/weather.........Sunny (15-25 percent).
Max temperature.....Around 81.
Min humidity........62 percent.
Wind (20 ft)........Light winds becoming southeast 5 to 6 mph late
                    in the morning.
Mixing height.......3600 ft AGL.
Transport winds.....South 7 to 13 mph.
Smoke dispersal.....Poor (2200 knot-ft) early in the morning
                    increasing to good (36400 knot-ft) in the
                    afternoon.
GFDI................0.

TIME (CDT)      6 AM         10 AM        2 PM
Sky (%).........21           33           16
Weather cov.....
Weather type....NONE         NONE         NONE
Tstm cov........
Temp............60           73           79
RH..............93           76           62
20 FT wind......E 3G6        SE 3G8       SE 6G12
Mix hgt (ft)....400          1600         3400
Transport wind..SE 7         SE 9         S 12
GFDI............0            0            0
Smoke Dispersal.2            13           34
Smoke Cat.......POOR         POOR         POOR

$$
Forecaster...Bury
Requested by...Cole Rozendaal
Type of request...PRESCRIBED
.TAG 2519812.0/DMX
.DELDT 08/13/25
.FormatterVersion 2.0.0
.EMAIL crozen@poweshiekcountyiowa.gov