Suppression Forecast
Issued by NWS Omaha/Valley, NE

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000
FNUS73 KOAX 201346
FWSOAX

Spot Forecast for Loess Hills West Zimmerman...Iowa DNR Missouri River Unit
National Weather Service Omaha/Valley NE
846 AM CDT Fri Apr 20 2018

Forecast is based on ignition time of 0900 CDT on April 20.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...

Clouds will increase today ahead of a strong storm system moving
into the Rockies. Expect winds to gradually strengthen from the
southeast to 10 to 15 mph with afternoon temperatures warming into
the upper 50s. Lowest relative humidity values of around
35 percent will be possible this afternoon.
Tonight, the above-mentioned weather system will shift east into
the High Plains with a chance for light rain, mainly across
portions of eastern Nebraska.

.REST OF TODAY...

Sky/weather.........Mostly cloudy (65-75 percent).
Temperature.........40 at ignition...Max 59.
RH..................65 percent at ignition...Min 34 percent.
Wind (20 ft)........Winds southeast at 7 mph at
                    ignition...otherwise Southeast winds 7 to 10
                    mph.
Mixing height.......700 ft AGL at ignition...otherwise 700-2400 ft
                    AGL, increasing to 3800-5600 ft AGL.
Transport winds.....Southeast 15 to 18 mph.
Smoke dispersal.....Poor /9200 knot-ft/ at ignition. Max...good
                    /56100 knot-ft/, increasing to good to
                    excellent (56400-86300 knot-ft) in the
                    afternoon.
GFDI (max)..........Moderate.
Haines Index........4 or low potential for large plume dominated
                    fire growth at ignition...max 4.

TIME (CDT)      9 AM   11 AM  1 PM   3 PM   5 PM
Sky (%).........54     68     83     87     90
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE
Tstm cov........
Temp............40     49     55     58     58
RH..............65     54     41     36     37
20 ft wind......SE 7   SE 8   SE 9   SE 10  SE 9
20 ft wind gust.10     15     15     15     15
Mix hgt (ft)....700    2400   4600   5600   3800
Transport wind..SE 15  SE 17  SE 18  SE 18  SE 16
GFDI............1      3      5      7      6
Haines index....4      4      4      4      4
SDspl kt-ft/10009      36     73     86     56

.TONIGHT...

Sky/weather.........Cloudy (90-100 percent).
Temperature.........Min 38.
RH..................Max 82 percent.
Wind (20 ft)........East winds 6 to 8 mph.
Mixing height.......0-1800 ft AGL.
Transport winds.....East 15 to 20 mph.
Smoke dispersal.....Poor to fair (0-27100 knot-ft).
GFDI (max)..........Moderate.
Haines Index........4 to 5 or low potential for large plume
                    dominated fire growth to or moderate potential
                    for large plume dominated fire growth.

TIME (CDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
Sky (%).........92     100    100    100    100    99
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
Temp............57     53     47     45     44     43
RH..............38     48     63     70     76     73
20 ft wind......SE 8   E 6    E 6    E 7    E 7    E 7
20 ft wind gust.15     10     10     15     15     10
Mix hgt (ft)....1800   BLW100 300    300    300    300
Transport wind..SE 15  E 15   E 16   E 18   E 18   E 17
GFDI............5      2      2      2      2      2
Haines index....4      4      4      4      4      5
SDspl kt-ft/100027     0      4      4      4      4

.SATURDAY...

Sky/weather.........Cloudy (85-95 percent).
Temperature.........Max 56.
RH..................Min 43 percent.
Wind (20 ft)........East winds 6 to 8 mph.
Mixing height.......200-2100 ft AGL, increasing to 3800-5100 ft
                    AGL.
Transport winds.....East 13 to 17 mph.
Smoke dispersal.....Poor to good (2900-52300 knot-ft), increasing
                    to good to excellent (56500-75300 knot-ft)
                    late.
GFDI (max)..........Moderate.
Haines Index........4 to 5 or low potential for large plume
                    dominated fire growth to or moderate potential
                    for large plume dominated fire growth.

TIME (CDT)      6 AM   8 AM   10 AM  NOON   2 PM   4 PM
Sky (%).........98     87     84     85     84     78
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
Temp............40     40     45     49     53     56
RH..............79     76     65     58     50     43
20 ft wind......E 7    E 6    E 7    E 6    E 6    E 7
20 ft wind gust.10     10     10     10     10     15
Mix hgt (ft)....200    300    700    2100   4100   5100
Transport wind..E 15   E 15   E 16   E 14   E 14   E 17
GFDI............2      1      2      2      2      4
Haines index....5      5      4      4      4      4
SDspl kt-ft/10003      4      10     23     52     75

.FORECAST DAYS 3 THROUGH 5...
.SUNDAY...
Mostly cloudy. Lows in the upper 30s. Highs around 60. East winds
around 6 mph.
.MONDAY...
Partly cloudy. Lows in the upper 30s. Highs in the mid 60s.
Southeast winds around 5 mph.
.TUESDAY...
Mostly cloudy with a chance of rain. Lows in the lower 40s. Highs
around 60. Southwest winds around 8 mph.

$$
Forecaster...KG
Requested by...Adam Hanisch
Type of request...PRESCRIBED
.TAG 1807184.0/OAX



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