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

Current Version | Previous Version | Text Only | Print | Product List | Glossary Off
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 231119
AFDEWX

Area Forecast Discussion
National Weather Service Austin/San Antonio TX
519 AM CST Tue Jan 23 2018

.AVIATION...
High pressure will mean VFR conditions at all area airports through
this TAF period. There may be some high CIGs in the San Antonio area
this afternoon. Winds will be light with a shift to the northeast
through east this afternoon and back to the north tonight.

&&

.PREV DISCUSSION... /ISSUED 410 AM CST Tue Jan 23 2018/

SHORT TERM (Today through Wednesday)...
Surface high pressure along with mostly clear skies has allowed early
morning temperatures to drop into the mid 20 to upper 30s across
south central Texas. Surface high pressure and dry air will remain in
place today, allowing afternoon highs to warm into the 60s today.
Another cool night is in store for tonight given plenty of dry air,
little cloud cover and light winds. We have trended the forecast
toward the cooler guidance numbers. This will result in a freeze for
the Hill Country and adjacent cool spots along the I-35 corridor
north of San Antonio. On Wednesday, temperatures should change
little, with highs generally in the 60s. Surface high pressure begins
to shift east of the region and this should allow for more of an east
to southeast wind over south central Texas.

LONG TERM (Wednesday Night through Monday)...
For the mid to late portion of this week, we will see an increase in
low-level moisture as southeasterly flow increases. This will lead to
an increase in cloud cover, especially beginning Thursday night.
Meanwhile, a weak upper trough axis will move in from the west
Thursday night into early Friday morning. This will bring a low
chance for showers to most of south central Texas Thursday night and
Friday. Another cold front should move into the region on Saturday.
Rain chances continue ahead of the front and as the front passes
through the region. We will also continue to mention the chance for a
few thunderstorms on Saturday as the front moves in. The models do
show some timing differences with the front as well as the amount of
dry air expected behind the boundary. For now, we will side with the
ECMWF model as this solution appears to be favored by WPC and is supported
by the UKMET and Canadian models. We should see a quick decrease to
rain chances Saturday night, followed by dry weather into early next
week. The front will bring slightly cooler temperatures to the region
on Sunday with temperatures expected to warm beginning Monday.

&&

.PRELIMINARY POINT TEMPS/POPS...
Austin Camp Mabry              66  37  63  38  64 /   0   0   0   0   0
Austin Bergstrom Intl Airport  66  31  63  33  64 /   0   0   0   0   0
New Braunfels Muni Airport     66  34  63  35  63 /   0   0   0   0   0
Burnet Muni Airport            63  32  62  33  62 /   0   0   0   0   0
Del Rio Intl Airport           67  35  64  37  62 /   0   0   0   0   0
Georgetown Muni Airport        64  31  63  33  63 /   0   0   0   0   0
Hondo Muni Airport             69  32  65  34  63 /   0   0   0   0   0
San Marcos Muni Airport        66  33  64  35  64 /   0   0   0   0   0
La Grange - Fayette Regional   64  36  64  36  64 /   0   0   0   0   0
San Antonio Intl Airport       66  36  64  38  63 /   0   0   0   0   0
Stinson Muni Airport           67  37  64  37  64 /   0   0   0   0   0

&&

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

$$

Mesoscale/Aviation...05
Synoptic/Grids...24



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