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

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FXUS64 KEWX 150829
AFDEWX

Area Forecast Discussion
National Weather Service Austin/San Antonio TX
329 AM CDT Tue Aug 15 2017

.SHORT TERM (Today through Wednesday)...
A plume of higher moisture is evident on satellite stretching from
Northern Mexico into West Texas and into portions of North Central
Texas. Weak impulses aloft will help generate chances for showers and
thunderstorms across this region through the short term. There is a
low chance a few of these showers and storms could impact far western
and far northern areas of the CWA.

Otherwise, the main concern will be the heat. Highs today in the mid
to upper 90s across the Hill Country and upper 90s to 100-103
elsewhere. Heat index values across far southeast zones could briefly
hit Heat Advisory criteria, however will hold off on issuing an
advisory due to short duration and small coverage.

Across the I-35 corridor and back west to the Rio Grande there should
be enough mixing today to allow for heat index values to stay below
advisory levels, but still hot. Will issue an SPS today for heat
index values of 102-107, with isolated spots across the southeast
zones 108-109.

On Wednesday the heat index values will peak a degree or two warmer
in many areas than today, potentially resulting in the issuance of a
Heat Advisory.

Breezy south to southeast winds across portions of the CWA during
the afternoon through the evening hours the next couple of days.

&&

.LONG TERM (Wednesday Night through Monday)...
Hot conditions will persist through the latter half of the week into
the weekend as the mid and upper level subtropical ridge axis remains
in control. Elevated heat index values in the 103-108 range are expected
each afternoon. We will continue to stress heat safety during this
period of above normal temperatures. Rainfall opportunities appear
very limited and we will keep the forecast dry Thursday through the
weekend.

&&

.PRELIMINARY POINT TEMPS/POPS...
Austin Camp Mabry             100  79 100  78 101 /   0  -   -    0  -
Austin Bergstrom Intl Airport  99  78  99  78 100 /   0   0  -    0  -
New Braunfels Muni Airport    100  77 100  78 101 /   0  -   -   -   -
Burnet Muni Airport            96  75  96  75  97 /   0   0  -    0  10
Del Rio Intl Airport          101  79 101  80 102 /  -   -   10  20  -
Georgetown Muni Airport        98  77  98  77  98 /   0   0  -    0  -
Hondo Muni Airport            102  76 102  77 103 /   0   0  10  -   -
San Marcos Muni Airport       100  77 100  77 100 /   0  -   -   -   -
La Grange - Fayette Regional   99  79  98  78 100 /   0  -   10  -   10
San Antonio Intl Airport       99  79 100  79 101 /   0   0  -   -   -
Stinson Muni Airport           99  78  99  79 100 /   0   0  10   0  -

&&

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

$$

Mesoscale/Aviation...Oaks
Synoptic/Grids...Runyen



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