Suppression Forecast
Issued by NWS Des Moines, IA

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000
FNUS73 KDMX 201235
FWSDMX

Spot Forecast for Union Slough Unit 1...USFWS
National Weather Service Des Moines IA
735 AM CDT Mon Mar 20 2017

Forecast is based on ignition time of 0800 CDT on March 20.
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...

In the wake of a departing cold front, winds from the north or
northeast will average 10 to 15 mph and bring relatively cooler
and drier air into the state. Relative humidities, though, will
bottom out from the low 40 percent to the low 50 percent this
afternoon.

.TODAY...

Sky/weather.........Partly sunny (45-55 percent).
Max temperature.....Around 54.
Min humidity........52 percent.
Eye level winds.....North winds 7 to 15 mph.
Wind (20 ft)........North winds 7 to 15 mph.
Mixing height.......300-2100 ft AGL increasing to 2100-3100 ft AGL
                    early in the afternoon.
Transport winds.....North 9 to 17 mph shifting to the northeast 18
                    to 22 mph late in the morning.
Haines Index........4 or low potential for large plume dominated
                    fire growth.

TIME (CDT)      8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........52  54  58  50  50  46  49  48  45  54
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............39  40  43  46  48  50  52  54  54  53
RH..............96  89  82  76  71  66  61  54  52  52
20 FT WIND DIR..N   N   N   N   N   N   N   N   N   N
20 FT WIND SPD..10  12  15  15  15  15  15  15  15  13
20 FT WIND GUST.15  15  20  20  20  20  20  20  20  15
EYE LVL WND DIR.N   N   N   N   N   N   N   N   N   N
EYE LVL WND SPD.6   7   9   9   9   9   9   9   9   8
EYE LVL WND GST.15  15  20  20  20  20  20  20  20  15
MIX HGT (KFT)...0.6 1.0 1.4 1.7 1.9 2.1 2.4 2.7 3.1 2.1
MIXNG WIND DIR..N   N   N   N   NE  NE  NE  NE  NE  NE
MIXNG WIND SPD..13  15  17  20  21  22  22  21  20  18
HAINES INDEX....4   4   4   4   4   4   4   4   4   4

.TONIGHT...

Sky/weather.........Mostly cloudy (65-75 percent).
Min temperature.....Around 31.
Max humidity........85 percent.
Eye level winds.....North winds 7 to 12 mph.
Wind (20 ft)........North winds 7 to 12 mph.
Mixing height.......300-1200 ft AGL.
Transport winds.....North 8 to 17 mph decreasing to 5 to 9 mph in
                    the late evening and overnight.
Haines Index........4 to 5 or low potential for large plume
                    dominated fire growth to moderate potential
                    for large plume dominated fire growth.

TIME (CDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
SKY (%).........56     75     80     79     83     87
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE   NONE   NONE   NONE
TSTM COV........
TEMP............51     44     39     37     36     33
RH..............56     68     79     82     79     85
20 FT WIND......N 12   N 8    N 8    N 7    N 7    N 7
20 FT WIND GUST.15     10     10     10     10     10
EYE LEVEL WIND..N 7    N 5    N 5    N 4    N 4    N 4
EYE LVL WND GST.15     10     10     10     10     10
MIX HGT (FT)....1200   300    300    300    300    300
MIXNG WIND......NE 17  N 12   N 6    N 5    N 5    N 7
HAINES INDEX....4      4      5      5      5      5

.TUESDAY...

Sky/weather.........Mostly cloudy (70-80 percent) then becoming
                    mostly sunny (35-45 percent). Slight chance of
                    snow in the morning. Slight chance of rain late
                    in the morning.
Max temperature.....Around 43.
Min humidity........44 percent.
Eye level winds.....North winds 9 to 13 mph.
Wind (20 ft)........North winds 9 to 13 mph.
Mixing height.......300-2200 ft AGL increasing to 2600-3900 ft AGL
                    in the afternoon.
Transport winds.....North 12 to 18 mph.
Haines Index........3 to 5 or very low potential for large plume
                    dominated fire growth to moderate potential
                    for large plume dominated fire growth.

TIME (CDT)      6 AM      9 AM      NOON      3 PM
SKY (%).........89        85        67        41
WEATHER COV.....          S CHC     S CHC
WEATHER TYPE....NONE      SNOW      RAIN      NONE
TSTM COV........
TEMP............32        32        38        43
RH..............81        78        59        45
20 FT WIND......N 9G10    N 13G20   N 13G20   N 13G15
EYE LEVEL WIND..N 5G10    N 8G20    N 8G20    N 8G15
MIX HGT (FT)....300       1200      2600      3600
MIXNG WIND......N 12      N 17      N 15      N 15
HAINES INDEX....4         3         4         5

$$
Forecaster...Ansorge
Requested by...Chad Loreth
Type of request...PRESCRIBED
.TAG 1704617.0/DMX
.EMAIL chad_loreth@fws.gov



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