Sunday, December16, 2018 L-36.com


Marine Weather and Tides
Bay St. Louis, MS

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 6:45AMSunset 4:59PM Sunday December 16, 2018 8:44 PM CST (02:44 UTC) Moonrise 2:01PMMoonset 1:28AM Illumination 71% Phase: Waxing Gibbous; Moon at 9 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- 301 Pm Cst Sun Dec 16 2018
Tonight..North winds 5 to 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Monday..North winds 5 to 10 knots becoming west in the afternoon. Waves 1 to 2 feet. Dominant period 4 seconds.
Monday night..North winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds.
Tuesday..East winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds.
Tuesday night..East winds 5 to 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Wednesday..Southeast winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds. Showers likely.
Wednesday night..Southwest winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds. Chance of Thunderstorms in the evening. Chance of showers through the night.
Thursday..West winds 20 to 25 knots. Waves 3 to 5 feet with occasional waves to 6 feet. Dominant period 4 seconds. Chance of showers.
Thursday night..Northwest winds 25 to 30 knots. Waves 3 to 6 feet. Dominant period 4 seconds. Chance of showers.
Friday..Northwest winds 20 to 25 knots. Waves 3 to 6 feet. Dominant period 4 seconds.
Friday night..Northwest winds 15 to 20 knots easing to near 10 knots after midnight. Waves 2 to 4 feet. Dominant period 4 seconds.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 301 Pm Cst Sun Dec 16 2018
Synopsis..High pressure will remain over the coastal waters through Tuesday. An area of low pressure will then begin to affect the coastal waters on Wednesday as it strengthens over the southern plains. This low will drive a strong cold front through the area on Thursday. High pressure will then build in for the upcoming weekend.


7 Day Forecast for Marine Location Near Bay St. Louis, MS
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location: 30.31, -89.33     debug


Area Discussion for - New Orleans/Baton Rouge, LA
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Fxus64 klix 162120
afdlix
area forecast discussion
national weather service new orleans la
320 pm cst Sun dec 16 2018

Short term
A stubborn low overcast stratus deck associated with low-mid level
lows over carolina is slowly eroding from both west of btr and
east over ms coast. Expect clearing to continue as upper low to
east pulls away from region and subsidence becomes more dominate.

Southeast la will be last areas to clear late afternoon or early
evening.

Mid - upper ridge builds over region next 36 hours should make
for warmer and dry weather weather through Tuesday. Some high
cloudiness moving into region - especially on Tuesday in advance
of developing trough over SW united states may lower high
temperatures a few degrees than otherwise expected.

Long term
Ecmwf and GFS both remain consistent in forecasting a deepening
mid upper level trough over southwest united state and southern
plains Tuesday into Wednesday. The trough continues to move
eastward and deepen with both global models forecasting a closed
low evolving at the base of the trough in the Thursday time from
over la - ms region. Expect showers and isolated thunderstorms to
spread across the Wednesday as the initial shortwave trough and
surface low moves through area. As the upper low develops at the
base of trough and surface low deepens over the southeast u.S.,
the more significant precipitation will develop east of our
region. However expect showers to wrap around the west side of the
low - with Thursday forecast to be cloudy, breezy to windy, along
with scattered showers. Temps will be cool ranging from the upper
40s to lower 50s. Friday and Saturday conditions should improve
as low over the eastern u.S. Move northeast and zonal westerly mid
level flow dominates region allowing skies to clear and
temperatures moderate.

Aviation A persistent deck of low ceilings ranging from 1500 to
2500 feet continue to slowly burn off this afternoon at most of the
terminals. This cloud deck should fully erode by 00z, and expect to
seeVFR conditions take hold at all of the terminals from 00z
through around 06z. After 06z, the combination of light winds and
mostly clear skies should allow for a round of fog to form over
inland areas. Kbtr, khdc, kmcb, and khum are most likely to see fog
form, and have a period of ifr and even lifr visibility and ceiling
restrictions in the forecast for these terminals mainly between 08z
and 14z. After 14z, a very dry airmass in the low to mid-levels
will allow the fog to quickly clear and prevailingVFR conditions to
take hold at all of the terminals. 32

Marine Fairly benign conditions are expected over the coastal
waters through Tuesday as winds of around 10 knots and seas of 1 to
3 feet persist beneath a ridge of high pressure. Conditions will
begin to deteriorate on Wednesday as a strong area of low pressure
begins to approach the region. Winds will increase to 15 to 20
knots from the south, and seas should increase to 3 to 5 feet. By
Thursday, the strengthening area of low pressure will move to the
east of the region, and strong northwest flow will begin to develop.

Winds will quickly increase to gale force Thursday afternoon and
remain so through Friday morning. These gale force winds will also
produce very rough seas of around 15 feet over the open gulf waters.

Conditions should begin to improve by Friday night and Saturday as
high pressure builds in and winds decrease back to 10 to 15 knots. 32

Decision support
Dss code: green.

Deployed: none.

Activation: none.

Activities: none.

Preliminary point temps pops
Mcb 42 65 41 66 0 0 0 0
btr 44 66 42 65 0 0 0 0
asd 44 64 43 64 0 0 0 0
msy 47 63 46 64 0 0 0 0
gpt 45 63 44 63 0 0 0 0
pql 43 64 42 64 0 0 0 0

Lix watches warnings advisories
La... None.

Gm... None.

Ms... None.

Gm... None.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WYCM6 - 8747437 - Bay Waveland Yacht Club, MS 1 mi56 min NW 5.1 G 7 50°F 55°F1024.6 hPa
SHBL1 - 8761305 - Shell Beach, LA 36 mi56 min NNW 8.9 G 11 53°F 56°F1025 hPa
PNLM6 - 8741533 - Pascagoula NOAA Lab, MS 41 mi62 min 55°F
PTBM6 - 8741003 - Petit Bois Island, MS 44 mi56 min NW 8 G 9.9 54°F 1024.9 hPa
NWCL1 - 8761927 - New Canal, LA 46 mi62 min N 5.1 G 7 53°F 55°F1025.3 hPa
GDXM6 - Grand Bay Reserve, MS 48 mi179 min NNW 1 55°F 1025 hPa50°F

Wind History for Bay Waveland Yacht Club, MS
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Bay St. Louis, Stennis International Airport, MS8 mi1.9 hrsN 07.00 miFair45°F42°F93%1025.1 hPa
Gulfport - Gulfport-Biloxi International Airport, MS15 mi51 minNW 510.00 miFair48°F45°F89%1024.4 hPa

Wind History from HSA (wind in knots)
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Last 24hrW3------------------NW3NW5NW10NW10N10N8N10N6NE4N4CalmCalmCalmCalm
1 day agoSW7------------------W10W10W7
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W8W9SW8W8W6W5W6W6W4W3
2 days ago4------------------S5S15SW8W15W15W15W15W12SW8SW8
G16
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Tide / Current Tables for Bay St. Louis, Mississippi
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Bay St. Louis
Click for Map
Sun -- 12:28 AM CST     Moonset
Sun -- 06:46 AM CST     Sunrise
Sun -- 12:59 PM CST     0.45 feet Low Tide
Sun -- 01:00 PM CST     Moonrise
Sun -- 04:58 PM CST     Sunset
Sun -- 10:25 PM CST     0.94 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.90.90.80.80.70.70.60.60.50.50.50.50.50.40.50.50.50.60.70.80.80.90.90.9

Tide / Current Tables for Cat Island (West Point), Mississippi
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Cat Island (West Point)
Click for Map
Sun -- 12:27 AM CST     Moonset
Sun -- 06:46 AM CST     Sunrise
Sun -- 12:26 PM CST     0.27 feet Low Tide
Sun -- 01:00 PM CST     Moonrise
Sun -- 04:58 PM CST     Sunset
Sun -- 08:14 PM CST     0.81 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.80.70.70.70.70.60.60.50.50.40.30.30.30.30.30.40.50.60.70.80.80.80.80.7

Weather Map and Satellite Images
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GOES Local Image of    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.
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Wind Forecast for New Orleans/Baton Rouge, LA (21,6,7,8)
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Ground Weather Radar Station New Orleans/Baton Rouge, LA
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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.