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000
FNUS73 KDMX 141603
FWSDMX

Spot Forecast for Prairie Valley Preserve...Story County Conservation
National Weather Service Des Moines IA
1103 AM CDT Sun Apr 14 2024

Forecast is based on ignition time of 1100 CDT on April 14.
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...

Quiet conditions will continue this afternoon with light winds
from the north at around 10 to 12 mph. Humidity levels will drop
later this afternoon, but remain around 30% through noon.

.REST OF TODAY...

Sky/weather.........Sunny (0-5 percent).
Max temperature.....Around 82.
Min humidity........22 percent.
Wind (20 ft)........North winds 12 to 13 mph.
Mixing height.......6400 ft AGL.
Transport winds.....North 18 to 21 mph.
Smoke dispersal.....Excellent (65000 knot-ft).
GFDI................6.
Haines Index........5 to 6 or moderate to high potential for large
                    plume dominated fire growth.

TIME (CDT)      11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........2   2   2   1   1   1   1
Weather cov.....
Weather type....
Tstm cov........
Temp............76  79  80  81  81  81  80
RH..............34  29  27  25  24  22  23
20 FT wind dir..N   N   N   N   N   N   N
20 FT wind spd..13  12  12  12  12  13  12
20 FT wind gust.16  14  16  17  16  16  16
Mix hgt (kft)...3.6 4.5 5.3 5.5 6.1 6.4 5.9
Transp wind dir.N   N   N   N   N   N   N
Transp wind spd.21  20  18  18  18  18  18
GFDI............5   5   5   6   6   6   6
Haines index....6   6   5   5   5   5   5
SDspl kt-ft/100065  77  85  89  97  102 95

.TONIGHT...

Sky/weather.........Clear (0-10 percent).
Min temperature.....Around 45.
Max humidity........58 percent.
Wind (20 ft)........North winds 6 to 10 mph shifting to the east
                    around 6 mph overnight.
Mixing height.......400 ft AGL.
Transport winds.....North 13 to 17 mph shifting to the northeast 9
                    to 12 mph overnight.
Smoke dispersal.....Excellent (78600 knot-ft) early in the evening
                    decreasing to poor (2900 knot-ft) late in the
                    night.
GFDI................3.
Haines Index........5 or moderate potential for large plume
                    dominated fire growth.

TIME (CDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
Sky (%).........1      2      3      3      4      5
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
Temp............78     69     61     57     53     49
RH..............23     30     38     42     48     56
20 ft wind......N 10   N 7    NE 6   NE 6   NE 6   E 6
20 ft wind gust.15     12     10     9      9      9
Mix hgt (ft)....5200   500    400    400    400    400
Transport wind..N 17   N 13   NE 13  NE 12  E 10   E 9
GFDI............5      2      2      1      1      1
Haines index....5      5      5      5      5      5
SDspl kt-ft/100079     6      5      4      4      3

.MONDAY...

Sky/weather.........Sunny (5-15 percent).
Max temperature.....Around 80.
Min humidity........21 percent.
Wind (20 ft)........East winds 6 to 14 mph shifting to the
                    southeast 16 to 18 mph late in the morning.
Mixing height.......4000 ft AGL.
Transport winds.....East 12 to 21 mph shifting to the southeast 22
                    to 23 mph in the afternoon.
Smoke dispersal.....Poor (3700 knot-ft) early in the morning
                    increasing to excellent (79600 knot-ft) in the
                    afternoon.
GFDI................6 increasing to 12 late in the afternoon.
Haines Index........5 or moderate potential for large plume
                    dominated fire growth.

TIME (CDT)      6 AM      9 AM      NOON      3 PM
Sky (%).........5         3         3         5
Weather cov.....
Weather type....NONE      NONE      NONE      NONE
Tstm cov........
Temp............48        56        73        79
RH..............56        49        26        21
20 FT wind......E 6G9     E 10G17   SE 17G23  SE 18G24
Mix hgt (ft)....400       1000      3200      3900
Transport wind..E 12      E 16      SE 22     SE 23
GFDI............1         2         9         12
Haines index....5         5         5         5
SDspl kt-ft/10004         15        60        77

$$
Forecaster...Vachalek
Requested by...Brandon Clough
Type of request...PRESCRIBED
.TAG 2410722.0/DMX
.DELDT 04/14/24
.FormatterVersion 2.0.0
.EMAIL bclough@storycountyiowa.gov