Marine Weather and Tide Forecast for Gulfport, MS

SHORT TERM
(This afternoon through Tuesday)
Issued at 1131 AM CST Mon Mar 2 2026

Weak ridging over the Southern Plains this morning with a shortwave over Nevada. At the surface, high pressure extended from New England to Georgia, with a stationary front along Interstate 40. Fog dissipated around 10 AM in most areas, with the last shreds near/over Lake Pontchartrain. Temperatures jumped quickly from the upper 50s under the fog to the lower and middle 70s once an area had an hour or two of sunshine. Dew points were in the upper 50s and lower 60s.

Main forecast issue in the short term will be the potential development of fog during the overnight hours tonight. This morning's fog appeared to be more of a radiation fog, where tonight looks to be more of an advection or hybrid fog type.
Onshore flow is becoming more established, but water temperatures are also warming up. Away from the Mississippi River waters (mid 50s), most water temperatures are in the mid 60s. Dew points aren't forecast to reach the mid 60s until Tuesday night. Will carry mention of fog in the grids for tonight, but will not do a pre-emptive advisory at this time.

Much above normal temperatures to continue, with highs away from marine influences probably getting into the lower 80s and lows upper 50s to mid 60s.

LONG TERM
(Tuesday night through Sunday)
Issued at 1131 AM CST Mon Mar 2 2026

Upper ridging will shift east of the Florida Peninsula, with southwesterly upper flow becoming established across the area for the end of the week through the weekend. Advection fog will be a concern, especially late in the week, as dew points in the mid and upper 60s move over waters with temperatures in the mid 60s. Persistent southerly flow will keep the moist airmass across the area, and we are likely to see a daily chance of showers and thunderstorms through the weekend. Any organized precipitation will be well to the north and west of the area through the weekend. Much above normal temperatures will continue with daily departures from normal in excess of 10 degrees through the weekend.

AVIATION
(00Z TAFS)
Issued at 541 PM CST Mon Mar 2 2026

Fog and low stratus producing an extended period of IFR conditions at all of the terminals is the primary forecast concern with the 00z package. Advection fog and low stratus will begin to impact GPT as early as 02z with prevailing IFR and LIFR conditions. These impacts at GPT will linger through remainder of the forecast period as continued light onshore flow advects a warm and moist airmass over the cooler neashore waters. The remaining terminals will see IFR fog and low stratus impacts develop from a combination of radiation and advection fog through the overnight hours with all of the terminals in IFR or lower status by 09z.
These conditions will persist through at least 16z and more likely 17z due to the advective component of the fog and low stratus.
After 18z, enough daytime heating and boundary layer mixing will develop to clear the fog and lift the stratus deck to between 1500 and 2500 feet. These MVFR conditions will persist through the remainder of the afternoon hours. PG

MARINE
Issued at 1131 AM CST Mon Mar 2 2026

Onshore flow continues through next weekend. There may be periods where winds approach 15 knots, but advisory level conditions aren't expected. Rather, the main concern will be fog development, as mid 60s dewpoints get advected over water that's pretty much the same temperature. The exception to this would be near the mouth of the Mississippi River, where water temperatures are in the mid 50s.

LIX WATCHES/WARNINGS/ADVISORIES
LA...None.
GM...None.
MS...None.
GM...None.