Dense Fog Advisory 21, NWS Austin/San Antonio, TX

091 
WWUS74 KEWX 171129
NPWEWX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
529 AM CST THU NOV 17 2016

TXZ207-220>222-171500-
/O.EXA.KEWX.FG.Y.0021.000000T0000Z-161117T1500Z/
GUADALUPE-ATASCOSA-WILSON-KARNES-
INCLUDING THE CITIES OF...SEGUIN...PLEASANTON...FLORESVILLE...
KARNES CITY
529 AM CST THU NOV 17 2016

...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CST THIS MORNING...

THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A
DENSE FOG ADVISORY...WHICH IS IN EFFECT UNTIL 9 AM CST THIS
MORNING. 

* VISIBILITY...1/4 MILE OR LESS.

* IMPACTS...REDUCED VISIBILITIES WILL CAUSE HAZARDOUS DRIVING
  CONDITIONS THROUGH THE MIDDLE OF THIS MORNING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A DENSE FOG ADVISORY MEANS VISIBILITIES WILL FREQUENTLY BE
REDUCED TO LESS THAN ONE QUARTER MILE. IF DRIVING...SLOW DOWN...
USE YOUR HEADLIGHTS...AND LEAVE PLENTY OF DISTANCE AHEAD OF YOU.

&&

$$

TXZ193-208-209-223>225-171500-
/O.CON.KEWX.FG.Y.0021.000000T0000Z-161117T1500Z/
BASTROP-CALDWELL-FAYETTE-GONZALES-DE WITT-LAVACA-
INCLUDING THE CITIES OF...BASTROP...LOCKHART...LA GRANGE...
GONZALES...CUERO...HALLETSVILLE
529 AM CST THU NOV 17 2016

...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST THIS
MORNING...

* VISIBILITY...1/4 MILE OR LESS.

* IMPACTS...REDUCED VISIBILITIES WILL CAUSE HAZARDOUS DRIVING
  CONDITIONS THROUGH THE MIDDLE OF THIS MORNING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A DENSE FOG ADVISORY MEANS VISIBILITIES WILL FREQUENTLY BE
REDUCED TO LESS THAN ONE QUARTER MILE. IF DRIVING...SLOW DOWN...
USE YOUR HEADLIGHTS...AND LEAVE PLENTY OF DISTANCE AHEAD OF YOU.

&&

$$

164 
WWUS74 KEWX 171459
NPWEWX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
859 AM CST THU NOV 17 2016

TXZ193-207>209-220>225-171600-
/O.EXP.KEWX.FG.Y.0021.000000T0000Z-161117T1500Z/
BASTROP-GUADALUPE-CALDWELL-FAYETTE-ATASCOSA-WILSON-KARNES-
GONZALES-DE WITT-LAVACA-
INCLUDING THE CITIES OF...BASTROP...SEGUIN...LOCKHART...
LA GRANGE...PLEASANTON...FLORESVILLE...KARNES CITY...GONZALES...
CUERO...HALLETSVILLE
859 AM CST THU NOV 17 2016

...DENSE FOG ADVISORY WILL EXPIRE AT 9 AM CST THIS MORNING...

DENSE FOG CONDITIONS HAVE IMPROVED ACROSS THE AREA AND THE DENSE
FOG ADVISORY WILL BE ALLOWED TO EXPIRE AT 9 AM CST.

$$

Area Forecast Discussion
National Weather Service Austin/San Antonio TX
1057 PM CST Wed Nov 16 2016

.AVIATION... /06Z TAFS/

Increasing onshore flow is producing a few low clouds over the
coastal prairies, with the area of cloudiness expected to expand
into the I-35 terminals after 08z. Models suggest some patchy
drizzle at daybreak but expect any that develops to be brief and
of minimal impact. Expect LIFR conditions first arriving to the
I-35 terminals as light fog with some outlying areas of patchy
dense fog possible. Expect a late morning arrival of low clouds
at DRT with all taf sites expected to mix to VFR in the early
afternoon. As surface winds continue to gradually increase over
the next day, will expect to see more uniform low clouds and less
fog the following night.

&&

.PREV DISCUSSION... /ISSUED 258 PM CST Wed Nov 16 2016/

SHORT TERM (Tonight through Thursday Night)...
After a warm, sunny and gusty afternoon with some breaking daily
maximum temperatures, expect clouds to develop this evening into
the overnight hours. Increased low level moisture is forecast to
push across the coastal Plains and then into the I-35 corridor.
Areas along the coastal Plains could see areas of fog while
patchy fog is expected across most areas along and east of
Interstate 35. Low clouds are expected to scatter out by mid-
morning Thursday for partly cloudy skies across most of the
region. It will be a bit cooler due to cloud coverage and
therefore no anticipating breaking maximum daily records.

LONG TERM (Friday through Wednesday)...
An upper level system will be moving across the four corners
region into the Southern Plains late Thursday into Friday. This
system will be sending a strong cold front across South-Central
Texas on Friday for chances of showers and thunderstorms. There is
a slight chance for showers across the Hill Country around dawn as
a short-wave trough moves ahead of the frontal boundary. This is a
progressive and quick moving frontal boundary and should exit the
area by mid-afternoon on Friday. Rainfall accumulations could
range from few hundredths to one quarter inch with few spots
getting up to three quarter of an inch. Breezy northerly winds and
gusts up to 20 mph are expected in the wake of the cold front
through the evening hours.

The upcoming weekend will be cooler than climate normals as the
cool airmass spreads across the area. Saturday's high temps will
only get into the upper 50s across the Hill Country to mid 60s
along the coastal Plains. Sunday morning lows will significantly
drop as a result of clear skies and light winds. This will be the
coldest airmass so far this fall to enter the area with expected
low temperatures to reach the lower 30s across part of the Hill
Country. Some areas across the Hill Country could experience
temperatures in the 30-32 range for few hours. Sunday's highs will
increase several degrees from those expected on Saturday as
southerly winds return.

A warming trend is expected for the beginning of next week with
a slight chance for rain expected late Tuesday into Wednesday as
another upper level disturbance pushes through the area. Models
are keeping the second part of next week dry.

&&

.PRELIMINARY POINT TEMPS/POPS...
Austin Camp Mabry              85  60  81  65  70 /   0   0  -   20  40
Austin Bergstrom Intl Airport  86  57  82  65  70 /   0   0  -   20  50
New Braunfels Muni Airport     85  57  82  65  73 /   0   0  -   10  40
Burnet Muni Airport            83  57  78  60  67 /   0   0   0  20  30
Del Rio Intl Airport           84  55  80  60  73 /   0   0   0  -   10
Georgetown Muni Airport        84  57  80  63  68 /   0   0  -   20  40
Hondo Muni Airport             88  53  81  64  75 /   0   0  -   10  30
San Marcos Muni Airport        86  58  82  65  71 /   0   0  -   20  40
La Grange - Fayette Regional   86  62  83  67  74 /   0   0  -   10  50
San Antonio Intl Airport       87  59  81  66  73 /   0   0  -   10  40
Stinson Muni Airport           86  57  83  66  75 /   0   0  -   10  40

&&

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

Mesoscale/Aviation...Oaks
Synoptic/Grids...24
Public Service/Data Collection...33

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1203 AM CST THU NOV 17 2016

TXZ171>173-183>194-202>209-217>225-228-180615-
LLANO-BURNET-WILLIAMSON-VAL VERDE-EDWARDS-REAL-KERR-BANDERA-
GILLESPIE-KENDALL-BLANCO-HAYS-TRAVIS-BASTROP-LEE-KINNEY-UVALDE-
MEDINA-BEXAR-COMAL-GUADALUPE-CALDWELL-FAYETTE-MAVERICK-ZAVALA-
FRIO-ATASCOSA-WILSON-KARNES-GONZALES-DE WITT-LAVACA-DIMMIT-
1203 AM CST THU NOV 17 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS.

.DAY ONE...TODAY AND TONIGHT.

AREAS OF DENSE FOG WILL BE POSSIBLE EAST OF A CUERO TO GONZALES TO
BASTROP LINE THIS MORNING.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED.