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000
FXUS64 KEWX 151140
AFDEWX
Area Forecast Discussion
National Weather Service Austin/San Antonio TX
540 AM CST Sat Dec 15 2018
.AVIATION...
VFR flying conditions prevail with slowly increasing cirrus through
Sunday. NW winds 6 to 12 KTs will diminish this afternoon and become
variable less than 5 KTs this evening into tonight, except drainage
NW wind at KSAT. SW wind 5 KTs develops on Sunday.
&&
.PREV DISCUSSION... /ISSUED 338 AM CST Sat Dec 15 2018/
SHORT TERM (Today through Sunday)...
Upper air analysis last evening showed a low over northern Louisiana
with northwesterly flow over Texas. There was a ridge to the west
over the Rockies. The surface low continues to move away to the east
with high pressure building into West Texas. Winds across our CWA
were from the northwest and are decreasing as the pressure gradient
relaxes. The upper level ridge will move into the middle of the
country during this period and the flow will turn to westerly. The
surface high will move across South Central Texas. Winds will be
northwesterly through this morning and they will continue to weaken.
As the center of the high moves over our CWA, the wind direction will
become more variable. Dry air and high pressure will give us dry
weather and warming high temperatures today and Sunday. Low
temperatures Sunday morning will be colder than Saturday with clear
skies and light winds leading to good radiational cooling.
LONG TERM (Sunday Night through Friday)...
The upper level ridge will move to the east of Texas by Monday night.
Dry weather will continue for the first part of this period. Low
level flow will become southeasterly as the surface high moves to the
east Sunday night. This will warm low temperatures Monday morning.
Tuesday an upper trough will move into Texas and bring a surface
frontal system. This system will bring the next chance for rain to
our area. Rain chances will develop Tuesday night and continue into
Wednesday. The best chances for rain will be across the eastern half
of our CWA where the deepest moisture will be. Winds will be
northerly to northwesterly behind the front returning dry weather for
the rest of the period.
&&
.PRELIMINARY POINT TEMPS/POPS...
Austin Camp Mabry 63 37 68 47 65 / 0 0 0 0 0
Austin Bergstrom Intl Airport 62 31 67 44 65 / 0 0 0 0 0
New Braunfels Muni Airport 64 33 67 45 66 / 0 0 0 0 0
Burnet Muni Airport 61 35 67 41 64 / 0 0 0 0 0
Del Rio Intl Airport 65 36 65 43 65 / 0 0 0 0 0
Georgetown Muni Airport 61 33 67 44 64 / 0 0 0 0 0
Hondo Muni Airport 67 34 69 44 67 / 0 0 0 0 0
San Marcos Muni Airport 64 33 67 45 65 / 0 0 0 0 0
La Grange - Fayette Regional 62 38 66 46 66 / 0 0 0 0 0
San Antonio Intl Airport 65 36 68 47 66 / 0 0 0 0 0
Stinson Muni Airport 67 36 68 47 66 / 0 0 0 0 0
&&
.EWX WATCHES/WARNINGS/ADVISORIES...
None.
&&
$$
Aviation...04
Short-Term/Long-Term...05
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