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

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FXUS64 KEWX 231807
AFDEWX

Area Forecast Discussion
National Weather Service Austin/San Antonio TX
1207 PM CST Thu Feb 23 2017

.AVIATION...
Clear skies and somewhat breezy south/southwesterly flow will prevail
this afternoon. Wind speeds should diminish after sunset as the
boundary layer begins to cool. With light winds overnight, some of
the high-res model guidance is continuing to show a chance of some
MVFR or perhaps IFR visibility restrictions for the I-35 sites. Will
continue to mention this in the TAFs. Northwesterly winds should
arrive by tomorrow morning as a dry cold front moves through the
region.

&&

.PREV DISCUSSION... /ISSUED 538 AM CST Thu Feb 23 2017/

UPDATE...
12Z Aviation Update Below.

AVIATION...

VFR conditions today. There is a chance patchy/shallow fog could
form along and east of I-35 between 06Z-11Z Friday ahead of a cold
front. LGT/VRB winds this morning becoming S 8-12 kts at SAT/AUS and
NW 5-10 kts at DRT after 16Z.

PREV DISCUSSION... /ISSUED 359 AM CST Thu Feb 23 2017/

SHORT TERM (Today through Friday)...
Another warm day is in store across the area with highs in the upper
80s to lower 90s. Today`s high temperatures are saved along the I-35
corridor, however, there is a good chance for Del Rio to tie or
break the 93 degrees record set in 1996.

A dry-line over the Trans-Pecos area will be moving eastward today
and expect it to slow-down or stall along Highway 281. Later this
evening the dry-line is forecast to move back to the west while a
Pacific cold front moves from west Texas into the Rio Grande and
Edwards Plateau areas. The frontal passage will take over the dry-
line as it moves across the rest of the area late tonight into Friday
morning. There is a chance for patchy fog to form along the coastal
plains for few hours before the arrival of the front late tonight and
have added patchy fog for the period.

In the wake of the dry-Pacific front, northwest to north winds will
prevail in addition to a little cool-down with high temperatures in
the upper 70s to mid 80s.

LONG TERM (Friday Night through Wednesday)...
A shallow cool-airmass will spread across the area during the first
part of the upcoming weekend with highs only in the mid to upper 60s
across most areas and in the 70s across the southwest counties.
Next chance for rain will be on Sunday into Monday as a short-wave
disturbance pushes across the region. Tuesday looks relatively dry
for much of the day with rain chances increasing later in the evening
into Wednesday as another Pacific cold front moves across the area.

Even with the passages of these Pacific cold fronts, we will remain
above normal climate values for highs and lows for the extended
forecast period.

Fire Weather conditions...
Elevated fire weather conditions are expected across the northern
Hill Country and Edwards Plateau areas this afternoon as minimum
relative humidities drop to the teens with wind speeds of 10 to 16
mph.

In the wake of Friday`s cold front passage, elevated to near critical
fire weather conditions are expected across much of the area as
humidities drop to the teens and lower 20s with wind speeds of 10 to
17 mph.

&&

.PRELIMINARY POINT TEMPS/POPS...
Austin Camp Mabry              89  57  80  43  65 /   0  -    0   0   0
Austin Bergstrom Intl Airport  88  56  79  41  65 /   0  -    0   0   0
New Braunfels Muni Airport     90  57  81  43  67 /   0   0   0   0   0
Burnet Muni Airport            88  52  75  38  61 /   0   0   0   0   0
Del Rio Intl Airport           93  54  80  45  74 /   0   0   0   0   0
Georgetown Muni Airport        88  55  76  40  62 /   0  -    0   0   0
Hondo Muni Airport             92  53  82  42  70 /   0   0   0   0   0
San Marcos Muni Airport        88  57  80  42  66 /   0  -    0   0   0
La Grange - Fayette Regional   87  59  80  44  66 /   0  -   -    0   0
San Antonio Intl Airport       91  57  82  44  68 /   0   0   0   0   0
Stinson Muni Airport           91  57  83  45  69 /   0   0   0   0   0

&&

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

$$

Mesoscale/Aviation...Hampshire
Synoptic/Grids...05
Public Service/Data Collection...YB



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