Text Products for FWS Issued by EWX

Spot Forecast
Issued by NWS Austin/San Antonio, TX
Versions: 1 2
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FNUS74 KEWX 110828
FWSEWX

Spot Forecast for Onion Creek piles...Austin Parks and Recreation Dept
National Weather Service Austin/San Antonio TX
328 AM CDT Thu Apr 11 2024

Forecast is based on ignition time of 0700 CDT on April 11.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...
Upper ridging and surface high pressure move over the area today
allowing for clear skies and winds under 15 MPH through this
afternoon. High pressure will slowly shift east tonight into
Friday bringing veering winds through this period. Light wind is
expected overnight becoming southerly by Friday morning. Good
overnight recovery and increasing humidity expected Friday.

Note: Additional details on timing for wind shifts has been
included in the forecast below.

.REST OF TODAY...

Sky/weather.........Sunny (0-5 percent).
Max temperature.....Around 79.
Min humidity........35 percent.
Wind (20 ft)........
 Slope/valley.......Northwest winds 6 to 8 mph shifting to the
                    north 9 to 12 mph between 12PM and 1PM.
                    Between 4PM and 6PM, winds will shift from
                    the NE from 8 to 10 MPH.
Mixing height.......5700 ft AGL.
Transport winds.....Northwest 9 to 15 mph shifting to the north 10
                    to 15 mph in the afternoon.
Haines Index........6 or high potential for large plume dominated
                    fire growth.

TIME (CDT)      7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........2   4   1   1   1   2   1   1   0   2   2
Weather cov.....
Weather type....
Tstm cov........
Temp............51  53  58  65  70  74  76  78  78  79  78
RH..............83  80  69  60  53  46  40  37  36  35  36
20 FT wind dir..W   W   NW  NW  NW  N   N   N   N   N   N
20 FT wind spd..7   7   8   9   10  12  12  13  12  10  10
20 FT wind gust.10  10  13  14  16  17  17  18  17  16  15
Mix hgt (kft)...0.4 0.6 1.1 1.3 2.2 4.1 5.0 5.2 5.5 5.7 4.4
Transp wind dir.NW  NW  NW  NW  N   N   N   N   N   NE  NE
Transp wind spd.9   10  12  13  14  15  15  14  14  12  10
Haines index....6   6   6   6   6   6   6   6   6   6   6

.TONIGHT...

Sky/weather.........Mostly clear (5-15 percent).
Min temperature.....Around 50.
Max humidity........93 percent.
Wind (20 ft)........
 Slope/valley.......Northeast winds 5 to 8 mph becoming east between
                    8 PM and 9PM. Winds will be light and variable
                    after midnight.
Mixing height.......400 ft AGL.
Transport winds.....Northeast 7 to 9 mph shifting to the southeast
                    around 7 mph late in the evening.
Haines Index........5 or moderate potential for large plume
                    dominated fire growth.

TIME (CDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........3   4   2   3   3   3   2   2   6   2   6   13
Weather cov.....
Weather type....
Tstm cov........
Temp............77  75  69  65  62  61  59  57  56  55  52  53
RH..............39  46  55  65  70  72  78  80  83  83  93  89
20 FT wind dir..NE  NE  E   E   E   E   SE  N   N   N   SW  SW
20 FT wind spd..9   8   6   5   5   3   2   0   0   0   2   3
20 FT wind gust.14  12  8   7   6   6   5   3   3   3   5   6
Mix hgt (kft)...1.8 0.5 0.5 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4
Transp wind dir.NE  NE  NE  E   E   E   SE  SE  SE  SE  SE  S
Transp wind spd.9   8   7   7   7   7   7   7   7   7   7   7
Haines index....5   5   5   5   5   5   5   5   5   5   5   5

.FRIDAY...

Sky/weather.........Sunny (10-20 percent).
Max temperature.....Around 81.
Min humidity........42 percent.
Wind (20 ft)........
 Slope/valley.......Light winds becoming south 5 to 10 mph at 10AM
                    to 11AM. South wind continues through the day.
Mixing height.......4600 ft AGL.
Transport winds.....South 7 to 16 mph increasing to 16 to 20 mph in
                    the afternoon.
Haines Index........5 or moderate potential for large plume
                    dominated fire growth.

TIME (CDT)      6 AM         10 AM        2 PM
Sky (%).........8            18           15
Weather cov.....
Weather type....NONE         NONE         NONE
Tstm cov........
Temp............52           67           80
RH..............93           65           43
20 FT wind......S 2G5        S 9G14       S 13G20
Mix hgt (ft)....400          1300         4000
Transport wind..S 7          S 14         S 20
Haines index....5            5            5

$$
Forecaster...27
Requested by...Matt McCaw
Type of request...PRESCRIBED
.TAG 2410348.0/EWX
.DELDT 04/11/24
.FormatterVersion 2.0.0
.EMAIL matt.mccaw@austintexas.gov
National Weather Service Weather Forecast Office
