National Weather Service Weather Forecast Office

• Home
• Site Map
• News
• Organization
• Search for: NWS All NOAA 

000
FXUS64 KEWX 301921
AFDEWX

Area Forecast Discussion
National Weather Service Austin/San Antonio TX
221 PM CDT Sat May 30 2020

.SHORT TERM (Tonight through Sunday Night)...
A long loop of GOES 16 water vapor shows the upper low still
centered to the southwest of Texas. Middle and high level clouds
continue on the eastern side of the low pressure, mainly over South
Texas. A few showers have begun to pop up from Corpus Christi
westward to Laredo. The loop shows the upper low actually drifting
southward so this should keep most of the shower and thunderstorm
activity for today south of our area, although an isolated shower or
thunderstorm is possible along the Coastal Plains.

The upper level low will slowly move to the north tonight through
Sunday night as it fights with the large upper level ridge across
the Southern US. With in moisture which has been pooled into South
Texas will gradually increase, especially up the Rio Grande Valley.
With the increased moisture and the lift associated with the upper
low rain chances will also be on the rise. High resolution models
show bands of precipitation, akin to a tropical system moving across
South Central Texas by tomorrow morning into the afternoon hours.
While most of the precipitation should be generally light, a few
embedded thunderstorms with brief downpours will be possible.

The greatest chance for showers and storms looks to be tomorrow
afternoon and tomorrow night as the upper low passes just to the
west of our area. While the Rio Grande Plains and Coastal Plains
will see the highest PoP scattered showers and storms could reach as
far east as the Austin metro area. With the increased cloud cover,
even for areas not seeing rain, afternoon highs tomorrow will be a
few degrees BELOW seasonal normals in the low to mid 80s. By Monday
morning the upper low should be centered over, or just north of the
Texas Big Bend continuing to move slowly to the north.

&&

.LONG TERM (Monday through Saturday)...
The upper low projected to move across Texas from Mexico with bring
with it moisture from the GOM, and some low chances for showers and
storms Monday and Tuesday. Temperatures start fairly pleasant,
especially for June, and with a gradual warming trend, the area is
back to normal by Thursday. Wednesday, upper ridging takes over and
relatively mild and warm weather as expected through the end of the
forecast period.

&&

.PRELIMINARY POINT TEMPS/POPS...
Austin Camp Mabry              70  83  69  83  68 /  -   40  20  40  10
Austin Bergstrom Intl Airport  69  83  68  83  68 /  10  40  20  40  10
New Braunfels Muni Airport     68  82  67  82  68 /  20  50  30  50  10
Burnet Muni Airport            67  81  66  81  66 /  -   30  20  30  10
Del Rio Intl Airport           70  85  69  86  70 /  10  50  40  40  20
Georgetown Muni Airport        67  83  67  83  68 /  -   30  20  30  10
Hondo Muni Airport             69  85  67  85  68 /  20  50  40  50  20
San Marcos Muni Airport        69  82  67  83  67 /  10  40  30  40  10
La Grange - Fayette Regional   71  83  69  84  69 /  20  30  20  40  10
San Antonio Intl Airport       70  83  68  83  69 /  20  50  40  50  20
Stinson Muni Airport           70  83  69  83  70 /  20  50  40  50  20

&&

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

$$

Short-Term/Aviation...Treadway
Long-Term...YB
Decision Support...EWilliams