Area Forecast Discussion
Issued by NWS Austin/San Antonio, TX

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
000
FXUS64 KEWX 251126
AFDEWX

Area Forecast Discussion
National Weather Service Austin/San Antonio TX
626 AM CDT Sat Mar 25 2017

.AVIATION...
Mostly clear skies will mean VFR conditions at all area airports
through the day and evening today. Winds will be light from the
northwest through the day and then shift to the southeast. Models
are showing the return of low clouds overnight in Austin and San
Antonio with MVFR CIGs developing around 09Z and lasting until late
morning Sunday.

&&

.PREV DISCUSSION... /ISSUED 434 AM CDT Sat Mar 25 2017/

SHORT TERM (Today through Sunday)...
As an upper level low centered over far eastern Oklahoma moves
further to the east, a weak cold front surging south has pushed off
the Escarpment. It will exit to the southeast of our area by around
sunrise and cannot rule out an isolated shower or two along it near
the Coastal Plains. Surface high pressure briefly builds into our
area this morning maintaining a dry airmass, then moves off to the
east this afternoon into evening as an upper level trough over
coastal Southern California approaches the Four Corners region
causing surface pressure falls in the Southern Plains. Southerly
winds return this evening into tonight with increasing lower level
moisture leading to stratus by Sunday morning. The upper level trough
moves out into the Central and Southern Plains on Sunday with a
stronger pressure gradient causing some locally breezy winds and
mixing out the stratus by midday.

LONG TERM (Sunday Night through Friday)...
The upper level trough continues moving east across the Plains.
Moisture convergence along and just east of the dryline may allow
for showers and thunderstorms across the eastern Hill Country to
along the I-35 corridor Sunday evening. However, a strong capping
inversion with dry air above will inhibit convective development and
only isolated coverage at the most is expected. Another strong upper
level low moves across the Southern Plains during the middle of the
next week. Upward forcing increases with isolated to scattered
showers and thunderstorms developing on Tuesday and becoming more
numerous Tuesday night into Wednesday. There is still a potential for
strong to severe storms and locally heavy rainfall with this system.
A recent trend in the GFS, has troughing hanging back until Thursday
into Thursday night while the ECMWF keeps the low intact moving
across Wednesday into Wednesday night. For now, have ended POPs from
west to east Wednesday into Wednesday night with lingering slight
POPs along the Highway 77 corridor on Thursday. Fair weather is
expect on Friday. Other upper level systems are expected beyond this
forecast for next weekend into the following week with additional
rounds of showers and thunderstorms.

FIRE WEATHER...
Periods of elevated fire weather conditions are expected for the next
several days with the greatest chances out west Sunday, Wednesday,
and Thursday.

&&

.PRELIMINARY POINT TEMPS/POPS...
Austin Camp Mabry              83  59  87  64  87 /   0  -   10  10   0
Austin Bergstrom Intl Airport  82  56  87  63  86 /   0  -   10  10   0
New Braunfels Muni Airport     84  58  88  63  88 /   0  -   10  10   0
Burnet Muni Airport            79  56  85  59  84 /   0   0  10  10   0
Del Rio Intl Airport           84  59  91  58  90 /   0   0  -   -    0
Georgetown Muni Airport        79  56  86  62  84 /   0   0  10  10   0
Hondo Muni Airport             86  59  90  61  90 /   0  -   10  10   0
San Marcos Muni Airport        82  57  88  64  87 /   0  -   10  10   0
La Grange - Fayette Regional   79  59  86  66  85 /   0  -   -   10  -
San Antonio Intl Airport       84  60  88  63  88 /   0  -   10  10   0
Stinson Muni Airport           86  60  90  63  88 /   0  -   10  10  -

&&

.EWX WATCHES/WARNINGS/ADVISORIES...
None.
&&

$$

Mesoscale/Aviation...05
Synoptic/Grids...04



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.