Suppression Forecast
Issued by NWS Austin/San Antonio, TX

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005
FNUS74 KEWX 201241
FWSEWX

Spot Forecast for LBJWC Rx...Lady Bird Johnson Wildflower Center
National Weather Service Austin/San Antonio TX
741 AM CDT Wed Sep 20 2017

Forecast is based on ignition time of 1200 CDT on September 20.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...
A hot day is in store today for the area with highs in the middle 90s.
Although it will be hot, moisture values will be high with minimum
humidity values only getting to the 45 to 50 percent range. Surface
winds will also be light with south winds generally less than 10 mph.
Otherwise, rain chances will be less than 10 percent this afternoon.

.REST OF TODAY...

Sky/weather.........Mostly sunny (35-45 percent).
Max temperature.....Around 94.
Min humidity........47 percent.
Eye level winds.....South winds 6 to 8 mph.
Wind (20 ft)........South winds 6 to 8 mph.
Mixing height.......4100-5800 ft AGL.
Transport winds.....South 16 to 17 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)      12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........51  36  35  33  35  32
Weather cov.....
Weather type....
Tstm cov........
Temp............86  89  91  93  94  94
RH..............66  59  55  51  47  47
20 FT wind dir..S   S   S   S   S   S
20 FT wind spd..10  9   8   6   6   6
20 FT wind gust.14  13  11
Eye lvl wnd dir.S   S   S   S   S   S
Eye lvl wnd spd.8   7   6   4   4   4
Eye lvl wnd gst.10  10  8   5
Mix hgt (kft)...4.1 4.5 4.8 5.5 5.8 5.6
Transp wind dir.S   S   S   S   S   S
Transp wind spd.16  16  16  16  17  17
Haines index....3   3   3   3   4   4

.TONIGHT...

Sky/weather.........Partly cloudy (25-35 percent) then becoming
                    mostly cloudy (60-70 percent).
Min temperature.....Around 75.
Max humidity........97 percent.
Eye level winds.....South winds 5 to 7 mph.
Wind (20 ft)........South winds 5 to 7 mph.
Mixing height.......4400-5200 ft AGL decreasing to 1300-3100 ft AGL
                    in the late evening and overnight.
Transport winds.....South 14 to 17 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)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........30  27  25  23  21  28  36  43  53  63  73  73
Weather cov.....
Weather type....
Tstm cov........
Temp............92  91  88  85  82  80  79  78  77  76  75  75
RH..............51  54  59  67  74  79  82  85  87  94  97  97
20 FT wind dir..SE  SE  SE  SE  SE  SE  S   S   S   S   S   S
20 FT wind spd..6   6   6   6   6   6   6   5   5   6   6   5
20 FT wind gust.
Eye lvl wnd dir.SE  SE  SE  SE  SE  SE  S   S   S   S   S   S
Eye lvl wnd spd.4   4   4   4   4   4   4   4   4   4   4   4
Eye lvl wnd gst.            5   5
Mix hgt (kft)...5.2 5.0 4.4 3.1 2.4 2.2 1.6 1.3 1.5 1.7 1.9 1.8
Transp wind dir.S   S   S   S   S   S   S   S   S   S   S   S
Transp wind spd.17  17  17  17  16  16  15  15  15  15  15  14
Haines index....4   4   4   4   4   3   3   3   3   3   3   3

.THURSDAY...

Sky/weather.........Partly sunny (65-75 percent). Slight chance of
                    showers and thunderstorms in the afternoon.
Max temperature.....Around 90.
Min humidity........56 percent.
Eye level winds.....South winds around 5 mph early in the morning
                    becoming light, then becoming southeast 5 to 7
                    mph in the late morning and afternoon.
Wind (20 ft)........South winds around 5 mph early in the morning
                    becoming light, then becoming southeast 5 to 7
                    mph in the late morning and afternoon. Gusty
                    and erratic winds expected near thunderstorms
                    in the afternoon.
Mixing height.......1800-3500 ft AGL increasing to 4000-5300 ft AGL
                    in the afternoon.
Transport winds.....South 10 to 16 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)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........72  72  73  73  74  72  70  68  67  65  64  63
Weather cov.....                            SCH SCH SCH SCH SCH
Weather type....                            RW  RW  RW  RW  RW
Tstm cov........                            SCH SCH SCH SCH SCH
Temp............75  75  76  78  80  82  85  88  89  90  90  89
RH..............97  97  94  88  82  77  67  61  59  56  56  57
20 FT wind dir..S   S   S   S   S   S   S   S   S   S   S   SE
20 FT wind spd..5   4   4   5   5   5   6   6   6   6   6   6
20 FT wind gust.
Eye lvl wnd dir.S   S   S   S   S   S   S   S   S   S   S   SE
Eye lvl wnd spd.4   3   3   4   4   4   4   4   4   4   4   4
Eye lvl wnd gst.                                    5   5   5
Mix hgt (kft)...1.8 1.8 2.1 2.6 2.9 3.5 4.7 5.3 5.1 4.6 4.4 4.0
Transp wind dir.S   S   S   S   S   S   S   S   S   S   S   S
Transp wind spd.14  14  13  13  12  10  10  10  12  13  14  16
Haines index....3   3   3   3   4   4   4   4   4   4   4   3

$$
Forecaster...29
Requested by...Matt Toole
Type of request...PRESCRIBED
.TAG 1716054.0/EWX
.EMAIL motoole@wildflower.org



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