Marine Weather Net

Apalachicola to Destin FL from 20 to 60 NM Marine Forecast


TODAY

SE
WINDS
10 - 15
KNOTS

TONIGHT

E
WINDS
5 - 10
KNOTS

WEDNESDAY

SE
WINDS
5 - 10
KNOTS

WEDNESDAY NIGHT

SW
WINDS
5 - 10
KNOTS

The Marine Weather Forecast In Detail:
GMZ770 Forecast Issued: 219 AM EDT Tue May 19 2026

Today...Southeast Winds 10 To 15 Knots, Diminishing To 5 To 10 Knots Late. Seas Around 3 Feet. Wave Detail: Southeast 3 Feet At 5 Seconds. Protected Waters A Moderate Chop.
Tonight...East Winds 5 To 10 Knots. Seas Around 3 Feet. Wave Detail: Southeast 2 Feet At 6 Seconds. Protected Waters A Light Chop.
Wednesday...Southeast Winds 5 To 10 Knots. Seas Around 3 Feet In The Morning, Then 1 Foot Or Less. Wave Detail: South 2 Feet At 7 Seconds. Protected Waters A Light Chop.
Wednesday Night...Southwest Winds 5 To 10 Knots, Becoming Northeast After Midnight. Waves 1 Foot Or Less. Wave Detail: South 2 Feet At 6 Seconds. Protected Waters A Light Chop.
Thursday...Southeast Winds 5 To 10 Knots. Waves 1 Foot Or Less. Wave Detail: South 1 Foot At 6 Seconds. Protected Waters A Light Chop.
Thursday Night...South Winds 5 To 10 Knots, Becoming Southeast After Midnight. Waves 1 Foot Or Less. Wave Detail: Southeast 1 Foot At 5 Seconds And South 1 Foot At 8 Seconds. Protected Waters A Light Chop.
Friday...Southeast Winds 5 To 10 Knots. Waves 1 Foot Or Less. Protected Waters A Light Chop.
Friday Night...South Winds 5 To 10 Knots. Waves 1 Foot Or Less. Protected Waters A Light Chop.
Saturday...Southeast Winds 5 To 10 Knots. Waves 1 Foot Or Less. Protected Waters A Light Chop.
Saturday Night...Southeast Winds 5 To 10 Knots. Waves 1 Foot Or Less. Protected Waters A Light Chop.
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Area Forecast Discussion
National Weather Service Tallahassee FL
224am EDT Tuesday May 19 2026

...New SHORT TERM, LONG TERM,

Marine
IRE WEATHER,Hydrology
.KEY MESSAGES... Issued at 220am EDT Tuesday May 19 2026

- Hot temperatures are expected through late week. There is a high chance of highs at or above 90 across the area with the Florida Big Bend having a low chance of highs at or above 95. The heat may affect those who are sensitive, especially without cooling/hydration.

- Isolated afternoon and early evening showers and thunderstorms continue through the next few days with coverage increasing this weekend. Gusty winds and locally heavy rainfall are the main concerns with any stronger storms that develop.

.SHORT TERM AND Long Term (Today through next Monday) Issued at 220am EDT Tuesday May 19 2026

The region remains on the western periphery of the Bermuda ridge with the surface high meandering in the western Atlantic. Aloft, mid/upper ridge arcs from the southern Gulf northeast to off the Atlantic coast while an upper low is situated in the Bahamas. Further west, longwave troughing extends through the Rockies into the eastern Pacific. In between the trough and ridge is a cold front stretching southwest from the Great Lakes to western Texas. Ridging will remain in place through this week despite the upper low trying to make it to the southeast coast then ridging will strengthen as the upper low translates south into the Caribbean. The central CONUS trough tries to move east but is essentially blocked by the upper ridge with shortwaves riding within the longwave flow over the ridge into southern Canada. The aforementioned cold front stalls in northern Alabama and Georgia Thursday then pushes north Friday and gradually dissipates this weekend.

Around our neck of the woods, PWATs (Precipitable Waters) are around 1.2-1.3 inches today and Wednesday with limited 850-700mb moisture and stronger drier air aloft from 700-500mb. This will lead to less coverage of convection (20-40%) each afternoon, less cloud cover, and above normal high temperatures. Highs will be in the low 90s and pushing mid 90s in some locations which will set heat index values in the mid to upper 90s and close to 100F. PWATs (Precipitable Waters) begin a gradual increase Thursday though convection appears limited to the east coast seabreeze.

Friday into the weekend, the western Atlantic high pressure shifts eastward with not as much dry mid level air as in mid week. PWATs (Precipitable Waters) increase to 1.7+ inches which, along with surface winds becoming more southerly, should increase seabreeze and diurnally driven convection each day. Rainfall chances increase to 40-60% heading into the weekend. With the added rainfall and potential cloud cover, high temperatures won't be as hot with readings in the upper 80s to low 90s. However, with the added moisture, heat index values will still run in the mid to upper 90s.

Marine
Issued at 220am EDT Tuesday May 19 2026

High pressure will be the dominate weather feature across the northeast Gulf waters through the period producing light to occasionally moderate southeast to south winds and one to three foot seas into the first half of the upcoming weekend.

Fire Weather
Issued at 220am EDT Tuesday May 19 2026

Good dispersions are expected the rest of the week, though a few pockets of high dispersions may occur Thursday and Friday, as mixing heigheights will range 5500-7000 feet and transport winds of 10 mph. Moisture will continue to filter into the area keeping afternoon humidities above 40% each day. Isolated to scattered showers and storms will be possible along the afternoon sea breeze. Some of these storms may produce gusty, erratic winds as well as frequent lightning strikes. Chances for rain gradually increases each day and especially into this upcoming weekend.

Hydrology
Issued at 220am EDT Tuesday May 19 2026

Isolated to scattered storms will be possible each day through the next week, however, better chances will reside beginning this weekend. These could produce locally heavy downpours, which may lead to some nuisance flooding, mainly in urban or poor drainage areas. However, widespread flooding concerns are not expected.

Extreme to exceptional drought continues across the area. While the rain is beneficial, significant improvement in drought conditions is not expected. For more information on local drought impacts, please visit www.weather.gov/tae/DroughtInformationStatement.

NOAA Tallahassee FL Office: Watches - Warnings - Advisories
FL...None. GA...None. AL...None. GM...None.