Synopsis For The Middle Texas Coastal Waters
A surface low pressure system will move from the northwest Gulf into the northern Gulf today and tonight. This will result in a gradual decrease in the offshore flow and seas through tonight. Weak high pressure located over the waters on Sunday morning will move east by the afternoon. This will allow a weak onshore flow to develop by Sunday afternoon. A weak to moderate onshore flow will persist on Monday. A cold front is expected to move across the coastal waters by Tuesday afternoon with a strong offshore flow developing in its wake. An upper level disturbance will bring a chance of showers and thunderstorms on Monday with a chance continuing on Tuesday along the cold front.
Forecast as of 10:28 am CST on November 21, 2009
Coastal Waters From Port Mansfield To The Rio Grande Out 20 Nm-
Coastal Waters From Baffin Bay To Port Mansfield Out 20 Nm-
Small craft should exercise caution until seas subside
Today
North winds around 15 knots. Seas 4 to 6 feet.
Tonight
Northeast winds around 10 knots. Seas 2 to 4 feet subsiding to 1 to 3 feet after midnight.
Sunday
East winds around 10 knots. Seas 1 to 3 feet.
Sunday Night
Southeast winds around 10 knots. Seas 1 to 3 feet.
Monday
Southeast winds around 15 knots diminishing to around 10 knots after midnight. Seas 1 to 3 feet. Slight chance of showers and thunderstorms.
Tuesday
Light winds becoming east around 15 knots in the afternoon...then becoming northeast around 20 knots. Seas 3 to 5 feet. Chance of showers and thunderstorms.
Wednesday
North winds around 20 knots. Seas 5 to 7 feet. Chance of showers and thunderstorms.