Spot Forecast
Issued by NWS Austin/San Antonio, TX
Issued by NWS Austin/San Antonio, TX
321
FNUS74 KEWX 211039
FWSEWX
Spot Forecast for Ranch Hill Fire...TFS
National Weather Service Austin/San Antonio TX
539 AM CDT Fri Aug 21 2026
Forecast is based on forecast start time of 0600 CDT on August 21.
If conditions become unrepresentative...contact the National Weather
Service.
.DISCUSSION...Another hot and mostly sunny day will trend with no
rain. Minimum humidity during peak heating of the day will fall to
around the 25 to 30 percent range. Winds begin light but increase
through the afternoon into the evening with the gusts peaking in
the 15 to 20 mph range. Winds subside into the overnight with
humidity levels recovery to near 80 percent. Saturday afternoon is
similar to this afternoon with more hot conditions but there may
be a little more high clouds on Saturday compared to today. The
minimum humidity levels again fall into the 25 to 30 percent
range with peak gusts in the 15 to 20 mph range. There could be a
low chance for a late afternoon or early evening shower and/or
storm on Saturday, but favors slightly farther to the north-
northeast of the location of this fire.
.TODAY...
Sky/weather.........Sunny (0-10 percent).
CWR.................0 percent.
Max temperature.....Around 98.
Min humidity........29 percent.
Eye level winds.....Southwest winds around 4 mph decreasing to
around 3 mph early in the morning, then
shifting to the south around 4 mph in the late
morning and afternoon.
Wind (20 ft)........
Slope/valley.......South winds 5 to 6 mph early in the morning
becoming light, then becoming south 5 to 6 mph
in the late morning and afternoon.
Mixing height.......8700 ft AGL.
Transport winds.....South 8 to 10 mph.
Smoke dispersal.....Poor (3800 knot-ft) early in the morning
increasing to excellent (66400 knot-ft) in the
afternoon.
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........4 5 4 8 3 2 3 4 3 5 9 8
Weather cov.....
Weather type....
Tstm cov........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
Temp............74 73 75 78 84 88 91 94 96 97 97 98
RH..............87 93 90 82 65 54 47 39 35 33 33 31
20 FT wind dir..S SW SW SW SW SW S S SE SE SE S
20 FT wind spd..7 6 5 6 6 7 6 6 6 7 7 7
20 FT wind gust.14 13 13 12 13 13 12 12 13 14 15 15
Eye lvl wnd dir.S SW SW SW SW SW S S SE SE SE S
Eye lvl wnd spd.4 4 3 4 4 4 4 4 4 4 4 4
Eye lvl wnd gst.8 8 8 7 8 8 7 7 8 8 9 9
Mix hgt (kft)...0.5 0.5 0.7 1.2 1.5 2.9 5.6 7.0 7.4 8.3 8.7 8.3
Transp wind dir.S S S S S S SE SE SE SE SE SE
Transp wind spd.10 10 10 9 9 8 8 8 8 8 8 8
Vrate kt-ft/1K..4 4 5 12 14 22 32 47 53 57 58 66
Ventrate Cat....PR PR PR PR PR PR PR FR FR FR FR GD
.TONIGHT...
Sky/weather.........Mostly clear (10-20 percent).
CWR.................0 percent.
Min temperature.....Around 74.
Max humidity........79 percent.
Eye level winds.....South winds around 4 mph decreasing to around 3
mph early in the evening, then increasing to
southwest around 4 mph overnight.
Wind (20 ft)........
Slope/valley.......South winds 5 to 6 mph early in the evening
becoming light, then becoming south 5 to 6 mph
overnight.
Mixing height.......400 ft AGL.
Transport winds.....South 9 to 15 mph shifting to the southwest 13
to 14 mph after 3 am.
Smoke dispersal.....Excellent (64100 knot-ft) early in the evening
decreasing to poor (3300 knot-ft) late in the
night.
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........9 1 2 5 7 5 8 8 5 15 32 32
Weather cov.....
Weather type....
Tstm cov........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
Temp............97 96 93 87 85 83 82 80 79 78 76 76
RH..............31 29 33 42 45 49 56 62 67 69 76 76
20 FT wind dir..S S S S S S S S S S S SW
20 FT wind spd..7 6 5 5 5 5 6 7 6 6 6 6
20 FT wind gust.15 15 13 13 12 12 14 15 14 14 14 13
Eye lvl wnd dir.S S S S S S S S S S S SW
Eye lvl wnd spd.4 4 3 3 3 3 4 4 4 4 4 4
Eye lvl wnd gst.9 9 8 8 7 7 8 9 8 8 8 8
Mix hgt (kft)...7.6 7.2 5.5 2.1 0.4 0.5 0.5 0.5 0.5 0.5 0.5 0.5
Transp wind dir.SE SE SE S S S S S S SW SW SW
Transp wind spd.9 9 10 12 13 14 15 15 15 14 14 13
Vrate kt-ft/1K..64 57 8 4 3 5 8 7 7 7 6 5
Ventrate Cat....GD FR PR PR PR PR PR PR PR PR PR PR
.SATURDAY...
Sky/weather.........Sunny (15-25 percent).
CWR.................0 percent.
Max temperature.....Around 98.
Min humidity........27 percent.
Eye level winds.....Southwest winds around 4 mph decreasing to
around 3 mph in the morning, then increasing to
around 4 mph late in the morning shifting to
the south around 3 mph early in the afternoon
shifting to the southeast up to 5 mph.
Wind (20 ft)........
Slope/valley.......Southwest winds around 5 mph early in the
morning becoming light, then becoming southwest
around 5 mph late in the morning becoming light
becoming southeast 6 to 7 mph late in the
afternoon.
Mixing height.......7700 ft AGL.
Transport winds.....Southwest 8 to 12 mph shifting to the southeast
7 to 9 mph late in the morning.
Smoke dispersal.....Poor (4500 knot-ft) early in the morning
increasing to excellent (94200 knot-ft) in the
afternoon.
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........23 17 25 16 4 2 21 20 26 25 34 18
Weather cov.....
Weather type....
Tstm cov........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
Temp............75 74 76 79 86 90 93 94 96 97 97 97
RH..............76 79 74 69 51 45 39 34 32 30 30 29
20 FT wind dir..SW SW SW SW SW SW S S S SE SE SE
20 FT wind spd..6 5 5 5 5 6 5 5 5 7 8 8
20 FT wind gust.13 13 12 10 12 12 10 10 12 14 15 15
Eye lvl wnd dir.SW SW SW SW SW SW S S S SE SE SE
Eye lvl wnd spd.4 3 3 3 3 4 3 3 3 4 5 5
Eye lvl wnd gst.8 8 7 6 7 7 6 6 7 8 9 9
Mix hgt (kft)...0.4 0.4 0.7 1.3 1.6 3.0 5.9 7.3 7.4 7.6 7.7 7.1
Transp wind dir.SW SW SW SW S S SE SE SE SE SE SE
Transp wind spd.12 10 9 9 8 7 7 7 7 8 9 9
Vrate kt-ft/1K..5 5 6 12 15 22 32 41 64 82 75 94
Ventrate Cat....PR PR PR PR PR PR PR FR GD GD GD GD
$$
Forecaster...62
Requested by...Andrew Chelf
Type of request...WILDFIRE
.TAG 2620162.0/EWX
.DELDT 08/21/26
.FormatterVersion 2.0.0
.EMAIL csdispatch@tfs.tamu.edu