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942
FXUS64 KEWX 191113
AFDEWXArea Forecast Discussion
National Weather Service Austin/San Antonio TX
613 AM CDT Fri Apr 19 2024...New AVIATION...
.SHORT TERM...
(Today through Saturday)
Issued at 255 AM CDT Fri Apr 19 2024Mostly cloudy skies are prevailing across South-Central Texas
overnight with a mix of high and low clouds. Should see
northeasterly flow at the surface move into the area today and this
in combination with ample cloud cover should keep highs today in the
70s to lower 80s for most locations with some upper 80s possible in
the southwestern CWA. Think most of the area will remain rain-free
today with little forcing for ascent over the area. Can`t completely
rule out a stray shower with the south winds overrunning the
northerly surface winds but overall chances are low. For the evening
hours, the focus will return to the western CWA near the Rio Grande
for additional strong to severe storms possibly developing west of
the river moving east into the CWA in the late evening hours. This
is supported by several of the 00z high-res models. Can`t rule out a
strong storm with this activity.A weak disturbance will begin to bring some more widespread chances
for showers and storms early Saturday morning and continuing into
Saturday afternoon. The bulk of the activity will likely be in the
northern CWA, but rain chances will be in place for the entire CWA.
NBM guidance is much higher than what the high-res models would
support especially for locations south of the Hill Country. Undercut
the PoPs slightly but showers embedded in southerly flow just above
the surface will be possible. There may be enough instability in the
southern CWA Saturday afternoon as the front pulls north a bit to
create some low risk for a strong to severe storm. The latest Day 2
outlook from SPC shows a marginal risk and that seems reasonable.
Locally heavy rains will also be possible that could lead to
possible minor flooding concerns as rainfall amounts could be in
excess of 2 inches in some places.&&
.LONG TERM...
(Saturday night through Thursday)
Issued at 255 AM CDT Fri Apr 19 2024An upper level shortwave moves overhead as the cold front continues
its trek south Saturday night. Forcing by these features of an
unseasonably moist airmass with PWs up to 200% percent of normal for
this time of year will yield widespread showers with training of
cells making for locally heavy rains. WPC has our area in levels 1
to 2 out of 4 risk for excessive rains leading to flooding. However,
expect any flooding will be minor and of the urban and small stream
variety from rainfall up to 2 inches or so. Instability and shear
should allow for isolated to scattered thunderstorms. SPC has our
area in a 1 out of 5 risk of severe storms. The strongest storms
could produce hail and gusty winds.The upper level shortwave moves off to the east while the cool and
somewhat drier airmass deepens ending the showers and thunderstorms
early Sunday morning. However, under mostly cloudy skies with breezy
northerly winds, cold advection leads to a chilly day by late April
standards on Sunday with well below temperatures expected.A zonal flow takes hold by Monday and continues next week. Southerly
lower flow returns leading to a warming and moistening trend.
Temperatures warm to above normal by mid week. A low level jet and
possible weak impulses aloft encountering a deepening moist layer
may allow for some showers by mid week, however chances are
currently too to mention.&&
.AVIATION...
(12Z TAFS)
Issued at 611 AM CDT Fri Apr 19 2024MVFR/IFR stratus is prevailing across the terminals this morning and
these conditions will be slow to improve and last into the afternoon
hours. Winds are out of the northeast and will be mostly light today.
There is a chance for some thunderstorms in the west this evening and
will mention VCTS for DRT. Another round of MVFR and IFR ceilings and
perhaps visibilities can be expected tonight. Rain chances will
increase tomorrow afternoon for the I35 sites, just beyond the
current 30 hour cycle.&&
.PRELIMINARY POINT TEMPS/POPS...
Austin Camp Mabry 76 65 76 53 / 0 20 60 90
Austin Bergstrom Intl Airport 76 64 76 52 / 10 20 60 90
New Braunfels Muni Airport 80 65 79 54 / 10 20 50 90
Burnet Muni Airport 73 62 70 50 / 0 30 80 90
Del Rio Intl Airport 86 69 81 60 / 20 50 70 60
Georgetown Muni Airport 73 64 71 50 / 0 30 70 100
Hondo Muni Airport 83 66 80 55 / 10 30 60 80
San Marcos Muni Airport 79 64 78 53 / 10 20 50 90
La Grange - Fayette Regional 80 68 79 55 / 20 10 50 90
San Antonio Intl Airport 81 67 78 55 / 10 20 50 90
Stinson Muni Airport 82 67 80 57 / 10 20 50 90&&
.EWX WATCHES/WARNINGS/ADVISORIES...
None.
&&$$
Short-Term...29
Long-Term...04
Aviation...29
Hazardous Weather Outlook Issued: 04/19/2024 02:03:06 PM UTC
Zone Forecasts
Zone Forecast Product Issued: 04/19/2024 12:55:50 PM UTCPoint Forecast Matrices Issued: 04/19/2024 12:56:21 PM UTCTabular State Forecast Issued: 04/19/2024 12:56:21 PM UTC
Special Statements
No recent Short Term Forecast (NOW) has been issued for NWS Austin/San Antonio CWA (EWX).
Special Weather Statement Issued: 04/19/2024 05:27:50 AM UTC
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