Marine Weather Net

Tampa Bay Marine Forecast


TONIGHT

W
WINDS
5 KNOTS

WEDNESDAY

S
WINDS
5 KNOTS

WEDNESDAY NIGHT

N
WINDS
5 KNOTS

THURSDAY

E
WINDS
10
KNOTS

The Marine Weather Forecast In Detail:
GMZ830 Forecast Issued: 253 PM EDT Tue Jun 22 2021

Tonight...West Winds Around 5 Knots Then Becoming South In The Late Evening And Overnight. Bay And Inland Waters Smooth. Scattered Thunderstorms In The Evening, Then Isolated Thunderstorms After Midnight.
Wednesday...South Winds Around 5 Knots Then Becoming West In The Afternoon. Bay And Inland Waters Smooth. Scattered Thunderstorms.
Wednesday Night...North Winds Around 5 Knots Then Becoming East In The Late Evening And Overnight. Bay And Inland Waters Smooth. Scattered Thunderstorms In The Evening, Then Isolated Thunderstorms After Midnight.
Thursday...East Winds Around 10 Knots. Bay And Inland Waters A Light Chop. Scattered Thunderstorms. Numerous Showers In The Afternoon.
Thursday Night...East Winds Around 10 Knots. Bay And Inland Waters A Light Chop. Scattered Thunderstorms In The Evening, Then Isolated Thunderstorms After Midnight.
Friday...East Winds Around 10 Knots. Bay And Inland Waters A Light Chop. Scattered Thunderstorms. Numerous Showers In The Afternoon.
Friday Night...East Winds Around 10 Knots. Bay And Inland Waters A Light Chop. Isolated Thunderstorms In The Evening.
Saturday...East Winds Around 10 Knots. Bay And Inland Waters A Light Chop. Isolated Thunderstorms In The Morning, Then Numerous Showers And Scattered Thunderstorms In The Afternoon.
Saturday Night...East Winds Around 10 Knots. Bay And Inland Waters A Light Chop. Scattered Thunderstorms In The Evening, Then Isolated Thunderstorms After Midnight.
Sunday...East Winds Around 10 Knots. Bay And Inland Waters A Light Chop. Isolated Thunderstorms In The Morning, Then Scattered Thunderstorms In The Afternoon.
SHARE THIS PAGE:           
Gulf coastal waters from Bonita Beach to the Suwannee River out 60 NM - GMZ800
253 PM EDT Tue Jun 22 2021

High pressure ridging into the eastern Gulf of Mexico continues into mid week, with S to SW winds turning onshore near the coast each afternoon with the sea breeze. Ridge axis lifts north during the latter half of the week, with winds becoming more easterly. Wind speeds remain generally less than 15 knots, although daily thunderstorms will produce locally higher winds and hazardous boating conditions.
Area Forecast Discussion
National Weather Service Tampa Bay Ruskin FL
254pm EDT Tuesday Jun 22 2021

Troughing aloft continues over the E U.S. between a stout ridge over the W CONUS and W Atlantic ridging. At the surface, ridging extends across the peninsula from the W Atlantic into the E Gulf while a cold front settles into the SE U.S. but looks to stall to our north. Pattern expected to hold through mid week before troughing begins to fill and lift out allowing W Atlantic ridging to build W across the Southeast with deeper E'ly flow overspreading the area as surface ridge axis lifts to the north and persists into early next week.

For today and Wednesday expect S to SW flow over the state with showers/storms favoring interior locations during the afternoon into evening hours. Additional activity expected this afternoon particularly over the Nature Coast and interior as shortwave impulses rotate through the base of the E CONUS trough. Coupled with 2+ inch PW values (Precipitable Water values) over the northern two-thirds of the CWA, potential exists for some pockets of heavier rain in association with areas of deepest convection. WPC has highlighted parts of the Nature Coast under a Marginal Risk in today's Excessive Rainfall Outlook, with 1-2 inches expected with locally higher amounts. A few stronger storms are also possible across the Nature Coast and interior locations given the instability, with the primary threat being a few damaging wind gusts, and Storm Prediction Center has highlighted the Nature Coast SE through interior locations of Polk to Highlands counties under a Marginal Risk of severe storms. Similar evolution expected on Wednesday although greatest Probability of Precipitation more concentrated over the interior compared to today.

By Thu-Fri surface ridge axis lifts north across the area as ridging aloft builds over/north of FL allowing deep E'ly flow to setup over the area accompanied by an increase in moisture from the Caribbean/W Atlantic. Expect shower/storm coverage to shift back toward W half of the FL peninsula into the weekend, with scattered to numerous showers/storms likely each day, along with a slight downtick in afternoon highs. As for temperatures through the period, today will likely be the warmest through the remainder of the week, with highs across the Nature Coast limited to the mid 80s due to cloud cover/showers/storms but reaching the upper 80s/lower 90s with a few mid 90s elsewhere. Wed-Fri will feature highs in the mid 80s to around 90, before warming back into the mid 80s/lower 90s this weekend into next week.

Marine
High pressure ridging into the eastern Gulf of Mexico continues into mid week, with S to SW winds turning onshore near the coast each afternoon with the sea breeze. Ridge axis lifts north during the latter half of the week, with winds becoming more easterly. Wind speeds remain generally less than 15 knots, although daily thunderstorms will produce locally higher winds and hazardous boating conditions.

Fire Weather
Relative humidity will remain above critical levels during the next several days. Elevated dispersion indices remain possible this afternoon otherwise no concerns expected.

NOAA Tampa FL Office: Watches - Warnings - Advisories
FL...None. Gulf waters...None.