Thursday, December12, 2019
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Marine Weather and Tides
Gulfport, MS

Version 3.4
NOTICE
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:42AMSunset 4:57PM Thursday December 12, 2019 1:52 AM CST (07:52 UTC) Moonrise 6:35PMMoonset 8:02AM Illumination 100% Phase: Full Moon; Moon at 15 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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GMZ532 Mississippi Sound- 932 Pm Cst Wed Dec 11 2019
.small craft advisory in effect until 6 am cst Thursday...
Rest of tonight..Northeast winds 15 to 20 knots. Waves 3 to 5 feet. Dominant period 4 seconds.
Thursday..East winds 15 to 20 knots. Waves 2 to 4 feet. Dominant period 4 seconds. Chance of showers through the day.
Thursday night..Northeast winds 15 to 20 knots. Waves 2 to 4 feet. Dominant period 4 seconds. Showers likely in the evening, then showers after midnight.
Friday..Northeast winds 10 to 15 knots easing to near 5 knots late in the afternoon. Waves 1 to 2 feet. Dominant period 4 seconds. Chance of showers.
Friday night..Northwest winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Chance of showers.
Saturday..Northwest winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Saturday night..North winds 5 to 10 knots becoming east after midnight. Waves 1 foot or less. Dominant period 4 seconds.
Sunday..Southeast winds 5 to 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Sunday night..Southeast winds 5 to 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Monday..South winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Chance of showers in the morning, then showers likely in the afternoon.
Monday night..Southwest winds 10 to 15 knots becoming northwest after midnight, then becoming north after midnight. Waves 2 to 4 feet. Dominant period 4 seconds. Showers likely and slight chance of Thunderstorms.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 932 Pm Cst Wed Dec 11 2019
Synopsis..Strong winds are expected to continue across most southern coastal waters overnight between high pressure building over land from the north and a developing, weak low pressure system and nearly stationary front over the central gulf of mexico tonight into Thursday. This low will pass over the north central gulf waters Thursday and Thursday night. High pressure will then build for the weekend.


7 Day Forecast for Marine Location Near Gulfport, MS
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location: 30.36, -89.08     debug


Area Discussion for - New Orleans/Baton Rouge, LA
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FXUS64 KLIX 112224 AFDLIX

Area Forecast Discussion National Weather Service New Orleans LA 424 PM CST Wed Dec 11 2019

SHORT TERM (Tonight through Saturday).

Series of minor shortwave troughs will impact the central Gulf coast region in the west to southwest flow in the southern branch of the upper jet over the Gulf coast region. The drier air and clearing or decreasing in clouds that occurred over most land areas today are expected to hold tonight before the next disturbance brings an increase in clouds from the south Thursday and Thursday night. After a rather chilly day today this will set the stage for a cold night, however the colder northern locations are expected to see lows in the mid 30s, so no freezing temperatures are anticipated. Deeper low level moisture, warmer temperatures and surface dewpoint temperatures rising into the low to mid 60s are expected to move north through most of the coastal waters and lower Plaquemines Parish late tonight and Thursday, so a few thunderstorms could occur mixed in with the more widespread showers late Thursday afternoon and Thursday night. Weak instability should keep all storms below severe limits.

The chance of showers will decrease from the west Friday and Friday night as the main mid/upper level trough axis moves through the central Gulf coast region. Near seasonal to slightly warmer than normal high temperatures in the mid 60s to near 70 are expected Friday, then Saturday is expected to have clearing skies and continued mild temperatures with highs in the mid to upper 60s.

LONG TERM (Sunday through Wednesday).

12z medium range model runs remain in reasonable agreement during the period. Temperatures will continue to warm Sunday into Monday as the next storm system and cold front approach on Monday. As is usual this far out, there are timing and strength differences between the GFS and ECMWF, but both would indicate some strong to severe thunderstorms cannot be ruled out at some point Monday afternoon or Monday night with ample instability and shear indicated. Another shot of cold air behind Monday night's strong cold front is expected for Tuesday into Wednesday. Have continued to go with blended guidance. 22/TD

AVIATION.

The northern edge of a mid-level cloud deck will linger over or near KGPT, KNEW, KASD, KMSY, and KHUM through the evening hours, but VFR conditions will be the prevailing category at all of the terminals. These VFR conditions will persist through daybreak tomorrow. Lower ceilings are expected to begin moving in from the south tomorrow morning as a low pressure system passes south of Louisiana. Expect to see MVFR ceiling restrictions and a few showers begin to develop after 15z at nearly all of the terminals. Only KMCB should see continued VFR conditions through 18z tomorrow. PG

MARINE.

Strong pressure gradient and cold air advection offshore should allow low end gale conditions, mostly in frequent gusts, across the southern coastal waters through most of the evening, so will maintain the Gale Warning through 9 pm. Elsewhere, Small Craft Advisory (SCA) conditions will continue with Gale Warning area converting to a SCA from 9 pm tonight through 6 am Thursday over all waters and continuing over eastern waters through early Thursday evening. It is possible these windier conditions could continue over coastal waters from south of Southwest Pass to south of Pascagoula through late Thursday night as the models indicate a small low pressure area moving along the old frontal boundary that lifts north across the coastal waters.

The pressure gradient should become weak Friday which should bring lighter winds and flatter seas to the marine area, however that will be short lived as another cold front is expected to push through through Friday night which will bring winds back up to moderate levels through Saturday morning. Moderate southerly winds are expected to return Sunday into Monday as high pressure moves east and the next strong cold front approaches the region from the plains. This front will likely push through Monday night causing a shift to northerly winds that will likely exceed 20 knots by Monday night or Tuesday. 22/TD

DECISION SUPPORT.

DSS code: Blue. Deployed: None. Activation: None. Activities: Forecast support to City of New Orleans and Miss gulf coast Decision Support Services (DSS) Code Legend Green = No weather impacts that require action. Blue = Long-fused watch, warning, or advisory in effect or high visibility event; Marginal risk severe or excessive rain. Yellow = Heightened impacts with short-fused watch, warning or advisory issuances; radar support for slight risk severe or excessive rain. Orange = High Impacts; Enhanced risk severe; nearby tropical events; HazMat or other large episodes. Red = Full engagement for Moderate to high risk of severe and/or excessive rainfall, or direct tropical threats; Events of National Significance.

PRELIMINARY POINT TEMPS/POPS. MCB 38 59 47 64 / 0 20 30 30 BTR 38 61 49 66 / 0 20 30 20 ASD 38 62 47 67 / 0 30 50 40 MSY 47 62 54 67 / 0 30 50 30 GPT 42 60 49 64 / 0 40 70 50 PQL 40 62 47 68 / 0 30 80 50

LIX WATCHES/WARNINGS/ADVISORIES. LA . None. GM . Small Craft Advisory from 9 PM this evening to 6 AM CST Thursday for GMZ550-552-570-572.

Gale Warning until 9 PM CST this evening for GMZ550-552-555-570- 572-575-577.

Small Craft Advisory until 9 PM CST Thursday for GMZ536-538-557.

Small Craft Advisory from 9 PM this evening to 9 PM CST Thursday for GMZ555-575-577.

Small Craft Advisory until 6 AM CST Thursday for GMZ530-532-534.

MS . None. GM . Small Craft Advisory from 9 PM this evening to 6 AM CST Thursday for GMZ552-570-572.

Gale Warning until 9 PM CST this evening for GMZ552-555-570-572- 575-577.

Small Craft Advisory until 9 PM CST Thursday for GMZ538-557.

Small Craft Advisory from 9 PM this evening to 9 PM CST Thursday for GMZ575-577.

Small Craft Advisory until 6 AM CST Thursday for GMZ532-534.




Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WYCM6 - 8747437 - Bay Waveland Yacht Club, MS 13 mi58 min NE 11 G 13 45°F 55°F1028 hPa
PNLM6 - 8741533 - Pascagoula NOAA Lab, MS 27 mi58 min 58°F
PTBM6 - 8741003 - Petit Bois Island, MS 32 mi58 min NE 16 G 20 50°F 1027.4 hPa
42067 - USM3M02 34 mi52 min ENE 19 G 27 55°F 6 ft1026.8 hPa (-2.0)
GDXM6 - Grand Bay Reserve, MS 35 mi187 min N 4.1 45°F 1030 hPa37°F
KATA1 - Katrina Cut, AL 46 mi52 min ENE 21 51°F 1027.8 hPa (-2.0)
SHBL1 - 8761305 - Shell Beach, LA 46 mi52 min NE 19 G 22 52°F 58°F1027.1 hPa (-2.2)

Wind History for West Pier, Port of Gulfport, MS
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Gulfport - Gulfport-Biloxi International Airport, MS3 mi59 minNNE 810.00 miFair43°F30°F60%1027.7 hPa
Keesler Air Force Base / Biloxi, MS10 mi1.9 hrsNE 910.00 miFair44°F32°F64%1028.4 hPa

Link to 5 minute data for KGPT

Wind History from GPT (wind in knots)
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1 day agoS6S5SW6S34S4S5S53S6N12
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2 days agoCalmSE3CalmCalmCalmS4S6S5S8S9
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S7--------------------

Tide / Current Tables for Gulfport, Gulfport Harbor, Mississippi
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Gulfport
Click for Map
Thu -- 06:43 AM CST     Sunrise
Thu -- 07:01 AM CST     Moonset
Thu -- 07:23 AM CST     -0.14 feet Low Tide
Thu -- 04:56 PM CST     Sunset
Thu -- 05:35 PM CST     Moonrise
Thu -- 10:32 PM CST     2.10 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.81.61.310.60.2-0-0.1-0.1-00.10.20.30.50.60.80.91.11.21.51.71.92.12.1

Tide / Current Tables for Cat Island, Mississippi
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Weather Map
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wmap_A
GEOS Local Image of Southeast    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for New Orleans/Baton Rouge, LA (2,6,7,8)
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Ground Weather Radar Station Mobile, AL
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weather_mapweather_map weather_map

Gulf Stream Current


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Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.