South Texas Weather Forecast
Weather forecast for February 13, 2016
Severe weather and heavy rain possible overnight tonight through tomorrow morning.

February 13 – 15, 2017
Daily Weather Forecast
South Texas Weather Modification Association

Weather Discussion:
Mostly cloudy across with south TX region this morning, with isolated showers and scattered
fog.  Fog is mainly along the coast and through the coastal plains, and looks to last through the
early to mid morning hours.  A few Dense Fog Advisories are in effect along the coast until 9
am.  A stationary front is stretched West-to-east just south of San Antonio this morning, with
warm humid air to the south, and slightly cooler, drier air to the north.  The front looks to slowly
move north, with mostly cloudy skies and isolated showers throughout the day.  A few
thunderstorms are possible near Del Rio this afternoon.  High temperatures in the lower to mid
70’s.  A strong low pressure system will enter western TX late this evening, before rapidly
moving east.  A strong cold front looks to form across western TX, with scattered to widespread
showers and thunderstorms forming over west TX overnight.  These storms look to move east
across the south TX region overnight and through Tuesday morning.  Severe weather is
possible overnight and through the morning, along with locally heavy rain.  For now, the main
threats are high winds, hail, and possibly flooding rains overnight.  Overnight lows depend on
where the rain and colder air are early Tuesday morning.  West of San Antonio, overnight low
temps look to be in the upper 40’s, lower 50’s with cooler temps over hill country.  East of San
Antonio, low temps in the upper 60’s, lower 70’s.

Scattered to widespread showers and storms will continue moving east through TX until the late
morning / early afternoon hours.  Severe weather and local flooding will still be possible ahead
of the storms.  Morning fog is possible along the coast on Tuesday.  After the showers and
storms move through, skies look to be mostly sunny to partly cloudy as high pressure moves
into the region.  Breezy on Tuesday.  Tuesday high temps in the lower to mid 60’s, with cooler
temps over hill country and warmer temps over extreme south TX.  Partly cloudy overnight
Tuesday with lows in the lower to mid 40’s.  Parts of hill country could drop into the mid to upper
30’s.  High pressure continues on Wednesday, with mostly sunny skies.  Wednesday highs in
the upper 50’s, lower 60’s.  mostly sunny skies continue for Thursday and Friday.

Daily normal (F): high 67, low 44

Pilots (STWMA): season is over.  

Today: Mostly cloudy with isolated showers.  Scattered fog is possible along the coast and
coastal plains through the early to mid morning hours.  High temperatures in the lower to mid 70’
s.  Easterly winds 5 – 15 mph with stronger winds across extreme south TX.

Tonight: Mostly cloudy with scattered to widespread showers and thunderstorms.  Some storms
could be severe and locally heavy rain is possible.  For now, the main threats are high winds,
hail, and possibly flooding rains overnight.  Breezy.  Low temps in the upper 40’s, lower 50’s
west of San Antonio, with cooler temps over hill country.  East of San Antonio, low temps in the
upper 60’s, lower 70’s.  Southeasterly winds 5 – 15 mph, then northwesterly 5 – 15 mph (not
including winds from thunderstorms).

Tuesday: Widespread showers and storms continue to move east through the region through
the early afternoon.  Mostly sunny to partly cloudy after storms move through.  Morning fog is
possible along the coast on Tuesday.  Breezy.  High temps in the lower to mid 60’s, with cooler
temps over hill country and warmer temps over extreme south TX.  Partly cloudy overnight.  
Lows in the lower to mid 40’s.  Parts of hill country could drop into the mid to upper 30’s.  
Southerly winds 0 – 10 mph early then northwesterly at 10 – 20 mph with stronger gusts.

Wednesday: Mostly sunny.  High temperatures in the upper 50’s, lower 60’s.  Mostly clear
overnight.  Lows in the upper 30’s, lower 40’s, with warmer temps over extreme south TX.  
Northerly winds 5 – 15 mph.

Extended: Mostly sunny Thursday and Friday (February 17).


Forecast Notes:
Temperatures are in Fahrenheit (F)
Wind speeds are in miles per hour (mph)
Rainfall amounts in inches (in.)
Visibility in miles

Rain chance terminology from lowest to highest chance: isolated, scattered, widespread.
South Texas Weather Modification Association