|THURSDAY, DECEMBER 18, 2014
MOSTLY CLOUDY AND COOL TO MILD THROUGH TOMORROW WITH SHOWERS, ISOLATED THUNDERSTORMS AND SOME FOG LIKELY
CLEARING AND TURNING MUCH COOLER ON SATURDAY
Mostly cloudy and mild today with a 60% chance of showers and isolated thunderstorms. High temperatures will be in the low-70's. We should have southerly winds at 5-10 mph. It will be cloudy and cool tonight with some fog and an 80% chance of showers or thunderstorms. Low temperatures will be near 60. Expect southeast winds at 10-15 mph. Friday should bring mostly cloudy skies and some fog with an 80% chance of showers or thunderstorms, decreasing to a 60% chance by the afternoon. Highs will be in the mid-60's. Expect southeast winds at 10-15 mph. On Saturday, we should have partly cloudy skies and much cooler temperatures. Highs will be in the upper-50's. Winds will be from the north at 10-15 mph.
SYNOPSIS AND OUTLOOK:We should see cloudy skies and milder temperatures today with an increasing chance of rain as a warm front becomes stationary along the coast, surface low over south Texas slowly moves northeast and an upper-level disturbance approaches from the west. Rain chances will continue into Friday, with clearing and much cooler weather on Saturday as cold, high pressure moves in behind the surface low.
At the surface, a stationary warm front extends northeast along the Texas coast from a low in northeast Mexico and South Texas. The front then stretches east across the Gulf of Mexico to south Florida and the Bahamas. To our north, another stationary front lingers the Texas South Plains northward over the western Great Plains to Canada. Elsewhere, high pressure dominates the weather over the western third of the U.S. as well as Minnesota and the western Ohio Valley. A stationary front is located over the Great Lakes.
At the upper-levels, a less amplified flow is evident with an upper-level low over eastern Maine, a weak high pressure ridge over the Ohio Valley, a short-wave trough moving into the eastern Great Plains, another short wave trough is tracking east through Arizona and Utah with a high pressure ridge along the West Coast.
Increasing clouds and rain chances are in our picture through tomorrow, with a combination of fog, showers, light rain and isolated thunderstorms possible. A stalled warm front along the coast, a low in South Texas and two short-wave troughs heading east into Texas should provide the conditions for rain. Much cooler temperatures are on tap for Saturday as a cold front moves in behind the surface low..
The Tropical Atlantic Basin continues to be quiet overall with no active tropical cyclones and tropical development not expected over the coming 48-hours.