Marine Weather and Tide Forecast for Gulfport, MS

LONG TERM
(Tuesday night through Sunday)
Issued at 305 AM CDT Mon May 12 2025

Welcome to summer along the Gulf Coast. Ridging moves into the Gulf and southeastern U.S. That'll be the case through at least Friday, and if the GFS is correct, through the entire weekend into early next week. The ECMWF operational run, and around half of its ensemble members, tries to push a cold front toward the area over the weekend. That would increase the chance for showers and storms during the afternoons over the weekend. For now, a compromise solution brings a small chance of showers/storms to the area over the weekend, but that wouldn't be a washout by any means.

Forecast soundings indicate upper 80s for highs for most of the area Wednesday, but wouldn't be shocked to see a few spots hit 90.
Thursday and Friday are likely to see most or all of the area in the lower 90s, with the possible exception of the immediate coastal areas. That's not far off the "normal" first 90 degree reading, which is May 13th for Baton Rouge, the 17th for Slidell, the 18th for New Orleans International Airport, the 21st for McComb, and the 24th for Gulfport. The GFS solution would keep 90 degree highs in place through the weekend. Overnight lows will be above normal, from the upper 60s to mid 70s for the 2nd half of the week and over the weekend. Heat index values could top out around 100 degrees each day from Thursday onward. This isn't enough to justify Heat Advisories, but as this will be the first extended period of very warm conditions this season, it may take a bit for folks to acclimate to the heat, even those that are used to Gulf Coast summers.

AVIATION
(12Z TAFS)
Issued at 627 AM CDT Mon May 12 2025

Only forecast terminal with flight restrictions at forecast issuance was KMCB, where MVFR conditions were occurring. Patchy light rain was in the area, producing the restrictions. Also some SHRA offshore of Terrebonne Parish, but well south of KHUM and headed east. MVFR ceilings could occur at most terminals for a few hours this morning as cumulus field develops, but all indications are that cloud bases should lift above FL030 at most terminals.
Threat exists of SHRA/TSRA at all terminals today, but areal coverage is expected to be too limited to justify mention in forecast at this time. Beyond sunset this evening, threat of precipitation should come to an end for several days. If there are any flight restrictions around sunrise Tuesday morning, it would probably be at KMCB, where some BR is possible.

MARINE
Issued at 305 AM CDT Mon May 12 2025

Westerly winds around 15 knots, or perhaps a bit higher, will necessitate Small Craft Exercise Caution headlines today for much of the open waters. There are likely to be a few additional periods this week where winds increase into the 15-18 knot range, which would necessitate additional headlines. At this time, it doesn't appear conditions will deteriorate enough to justify Small Craft Advisories, though.

PRELIMINARY POINT TEMPS/POPS
MCB 76 59 85 66 / 30 0 0 0 BTR 77 62 87 69 / 10 0 0 0 ASD 78 62 86 68 / 20 0 0 0 MSY 78 65 87 71 / 20 0 0 0 GPT 78 63 83 70 / 30 10 0 0 PQL 78 61 83 67 / 40 10 10 0

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