Area Forecast Discussion


410 
FXUS64 KEWX 212057
AFDEWX
Area Forecast Discussion
National Weather Service Austin/San Antonio TX
257 PM CST Wed Feb 21 2018
.SHORT TERM (Tonight through Thursday Night)...
Upper air analysis this morning showed a deep trough over the western
half of the country with southwesterly flow over Texas. At the
surface, a cold front stretched from Victoria to Cotulla to Guerrero,
Mexico. Behind the front winds were from the north and temperatures 
were mostly in the 30s and 40s. A line of showers and thunderstorms 
from Burnet to Pleasanton is moving toward the east at this time. 
This line will continue across the eastern half of the CWA this 
afternoon. The upper pattern will change very little during this 
period and the cold front will make slow progress to the south. 
Showers and thunderstorms will continue through this period. Cold air
will continue to filter in this evening and temperatures will fall 
to freezing across our northern area after about 4 AM. With 
precipitation chances continuing and the cold air confined to the 
shallow boundary layer, there will be a chance for light freezing 
rain or a mix with rain. There will only be a few hours with 
temperatures below freezing and only low chances for any 
precipitation. Only minimal impacts are expected with possible minor 
ice accumulation on elevated surfaces. There could be some patches of
ice on bridges and overpasses from Burnet to Kerrville. Warming will
begin tomorrow and continue tomorrow night.
&&
.LONG TERM (Friday through Wednesday)...
The southwesterly flow between 700 and 500 mb will continue through 
most of the long term period. This will keep deep moisture in place
across much of the area. This will keep rain chances in the forecast
through the end of the week. Saturday another cold front, this one
from the Pacific, will enhance rain chances for the weekend. No
change in the upper pattern will mean continuing low chances for
precipitation into the middle of next week.
&&
.PRELIMINARY POINT TEMPS/POPS...
Austin Camp Mabry              37  50  45  69  61 /  40  70  70  60  40 
Austin Bergstrom Intl Airport  38  51  45  70  62 /  40  70  70  50  40 
New Braunfels Muni Airport     39  53  47  70  62 /  40  60  60  50  40 
Burnet Muni Airport            33  47  42  64  57 /  30  70  60  70  50 
Del Rio Intl Airport           40  59  50  69  57 /  30  30  30  30  30 
Georgetown Muni Airport        35  48  43  66  60 /  40  70  70  70  40 
Hondo Muni Airport             40  56  50  70  61 /  40  50  60  60  40 
San Marcos Muni Airport        38  53  46  71  62 /  50  70  60  50  40 
La Grange - Fayette Regional   42  57  52  75  65 /  60  50  60  40  30 
San Antonio Intl Airport       40  54  48  70  62 /  40  60  60  50  40 
Stinson Muni Airport           42  56  49  72  63 /  40  60  60  40  40 
&&
.EWX WATCHES/WARNINGS/ADVISORIES...
None.
&&
$$
Mesoscale/Aviation...24
Synoptic/Grids...05
Public Service/Data Collection...33