Suppression Forecast
Issued by NWS Des Moines, IA

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Spot Forecast for Strueker...Iowa DNR
National Weather Service Des Moines IA
817 AM CDT Tue May 22 2018

Forecast is based on ignition time of 0900 CDT on May 22.
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...

Areas of dense fog look to burn off through the morning hours
today. Light and variable winds are expected to come around to
southeast at 5 to 10 mph later today. Relative humidity will
remain fairly high in the morning, then decrease to 50 to 60
percent in the afternoon.

.REST OF TODAY...

Sky/weather.........Partly sunny (45-55 percent).
Temperature.........61 at ignition...Max 79.
RH..................87 percent at ignition...Min 49 percent.
Wind (20 ft)........Winds southeast at 2 mph at
                    ignition...otherwise Light winds becoming
                    southeast 5 to 7 mph in the afternoon.
Mixing height.......1500 ft AGL at ignition...otherwise 1500-3200
                    ft AGL increasing to 4300-6000 ft AGL in the
                    afternoon.
Transport winds.....South 2 to 10 mph.
Haines Index........2 or very low potential for large plume
                    dominated fire growth at ignition...max 4.

TIME (CDT)      9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........72  59  53  47  41  37  33  29  35
Weather cov.....
Weather type....
Tstm cov........
Temp............61  65  68  71  74  76  78  79  79
RH..............87  78  70  63  57  54  50  49  49
20 FT wind dir..SE  SE  SE  SE  S   S   SE  SE  SE
20 FT wind spd..2   3   3   5   6   7   7   7   7
20 FT wind gust.
Mix hgt (kft)...1.5 2.2 3.2 4.3 5.3 5.6 5.8 6.0 5.8
Transp wind dir.SE  E   SE  SE  S   S   S   S   S
Transp wind spd.2   2   2   2   2   3   6   8   10
Haines index....2   2   2   3   3   3   4   4   4

.TONIGHT...

Sky/weather.........Partly cloudy (40-50 percent) then becoming
                    mostly cloudy (65-75 percent). Chance of
                    showers and thunderstorms in the evening, then
                    showers and thunderstorms after midnight.
Temperature.........Min 61.
RH..................Max 100 percent.
Wind (20 ft)........Southeast winds 7 to 9 mph. Gusty and erratic
                    winds expected near thunderstorms early in the
                    evening.
Mixing height.......3600-5500 ft AGL decreasing to 300-1900 ft AGL
                    in the late evening and overnight.
Transport winds.....Southeast 6 to 15 mph.
Haines Index........3 to 4 OR or very low potential for large plume
                    dominated fire growth to or low potential for
                    large plume dominated fire growth.

TIME (CDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
Sky (%).........42     53     62     73     80     83
Weather cov.....       S CHC  S CHC  LIKELY LIKELY DEFNTE
Weather type....NONE   RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR
Tstm cov........       S CHC  S CHC  LIKELY LIKELY DEFNTE
Temp............79     75     70     67     65     62
RH..............49     58     71     78     87     97
20 ft wind......SE 8   SE 7   SE 7   SE 7   SE 8   SE 8
20 ft wind gust.
Mix hgt (ft)....5500   3600   300    300    300    300
Transport wind..S 13   SE 10  SE 6   SE 13  S 13   SE 7
Haines index....4      4      3      3      3      3

$$
Forecaster...Podrazik
Requested by...Rob Patterson
Type of request...PRESCRIBED
.TAG 1810469.0/DMX
.DELDT 05/22/18
.EMAIL rob.patterson@dnr.iowa.gov


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