Thursday, October19, 2017 L-36.com


Marine Weather and Tides
Bay St. Louis, MS

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 7:00AMSunset 6:21PM Thursday October 19, 2017 4:19 AM CDT (09:19 UTC) Moonrise 6:47AMMoonset 6:40PM Illumination 1% Phase: Waning Crescent; Moon at 29 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-lake Borgne- 330 Am Cdt Thu Oct 19 2017
Today..East winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds.
Tonight..East winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds.
Friday..East winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds.
Friday night..East winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds.
Saturday..Southeast winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds. Chance of showers and Thunderstorms in the morning, then showers and Thunderstorms likely in the afternoon.
Saturday night..Southeast winds 10 to 15 knots. Waves 2 to 3 feet. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Sunday..Southeast winds near 10 knots. Waves 2 feet. Dominant period 4 seconds. Showers and Thunderstorms likely.
Sunday night..South winds 10 to 15 knots becoming west after midnight. Waves 2 to 3 feet. Showers and Thunderstorms likely.
Monday..Northwest winds near 15 knots. Waves 2 to 4 feet. Chance of showers and Thunderstorms.
Monday night..Northwest winds near 15 knots. Waves 2 to 4 feet. Slight chance of showers and Thunderstorms.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 330 Am Cdt Thu Oct 19 2017
Synopsis..Ridge of high pressure will remain anchored over the southeast into the weekend. A cold front will approach the coastal waters Sunday night into Monday.

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 190839
afdlix
area forecast discussion
national weather service new orleans la
339 am cdt Thu oct 19 2017

Synopsis
At the surface, high pressure off the virginia coast extends
southwestward into east texas. An upper ridge is currently
centered over the great plains states. Only some high cloudiness
moving across the area. Temperatures showing quite a wide range
across the area depending on proximity to very warm water.

Temperatures ranging from 51 at bogalusa to 76 at boothville.

Short term
High pressure at the surface and aloft will continue to move
eastward over the next couple of days. This will allow moisture
levels to finally increase as easterly winds gain a southerly
component. Could start to see at least scattered showers south of
lake pontchartrain as early as Friday night, with showers storms
becoming likely across much of the area by Saturday afternoon.

High temperatures will be in the lower to middle 80s through
Saturday, which is about 5-8 degrees above normal. Overnight lows
will gradually moderate, with all areas in the 60s to lower 70s by
Saturday morning. This is a good 10-15 degrees above normal for
mid october. 35

Long term
Unfortunately, while the short term part of the forecast was
fairly straightforward, the long term portion is not. ECMWF and
gfs operational runs having difficulty resolving their differences
at 500 mb, with the GFS a good 12-24 hours faster at 500 mb by
Monday morning. Similar differences exist at the surface Sunday
afternoon. Previous forecast package was based close to the gfs.

That solution had a local frontal passage late Sunday or Sunday
night, and don't see any major reasons to make a switch. Only
question here is which model busts on Monday, as GFS is pretty
much dry with the ECMWF carrying likely pops for some portions of
the area. In coordination with surrounding offices, will carry
precipitation in the Monday forecast giving at least some credence
to the slower solution.

Once the frontal system clears the area, cooler weather returns
with temperatures near to below normal after Monday. Will go with
a middle of the road solution on temps, as it appears that the mex
numbers might be a little too cool. 35

Aviation
Vfr category conditions are expected at each of the terminals
throughout the TAF forecast period. 11

Marine
Moderate to occasionally strong easterly flow will continue across
the coastal waters through the end of the week. This will result in
exercise caution conditions that may flirt with small craft advisory
criteria at times, at least over the open gulf waters. The winds
will ease and shift to the southeast Sunday in advance of a cold
front that will move through the coastal waters Sunday night into
Monday. Moderate offshore flow will develop in the wake of this
front for the early part of the next work week. 11

Decision support
Dss code: green.

Deployed: none.

Activation: none.

Activities: none.

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.

Yellow = heightened impacts with short-fused watch, warning or
advisory issuances; radar support.

Orange = high impacts; slight to moderate risk severe; nearby
tropical events; hazmat or other large episodes.

Red = full engagement for moderate risk of severe and or direct
tropical threats; events of national significance.

Preliminary point temps pops
Mcb 80 57 83 64 0 0 0 10
btr 82 58 84 67 0 0 10 10
asd 82 59 84 66 0 0 10 10
msy 81 68 83 71 0 0 10 20
gpt 81 62 83 68 0 0 10 10
pql 83 59 84 66 0 0 10 10

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 mi50 min NE 8 G 8.9 63°F 72°F1020.9 hPa
OSTF1 - Stennis Test Facility 15 mi90 min Calm G 1.9 56°F 1021.5 hPa (-1.2)54°F
SHBL1 - 8761305 - Shell Beach, LA 36 mi50 min NE 9.9 G 12 71°F 76°F1020 hPa
DKCM6 - 8741501 - Dock C, Pascagoula, MS 41 mi50 min NE 5.1 G 7 64°F 1020.4 hPa
PNLM6 - 8741533 - Pascagoula NOAA Lab, MS 41 mi50 min 74°F
RARM6 - 8741094 - Range A rear, Pascagoula, MS 43 mi50 min NE 8 G 8.9 63°F 1020.2 hPa
PTBM6 - 8741003 - Petit Bois Island, MS 44 mi50 min ENE 13 G 15 69°F 1021 hPa
ULAM6 - 8741041 - Dock E. Port of Pascagoula, MS 44 mi50 min 78°F
NWCL1 - 8761927 - New Canal, LA 46 mi50 min E 6 G 9.9 69°F 76°F1020.1 hPa
GDXM6 - Grand Bay Reserve, MS 48 mi95 min NNE 5.1 62°F 1022 hPa59°F

Wind History for Bay Waveland Yacht Club, MS
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Gulfport - Gulfport-Biloxi International Airport, MS15 mi27 minNNW 310.00 miFair57°F55°F93%1020.3 hPa
Keesler Air Force Base / Biloxi, MS23 mi24 minN 510.00 miFair58°F54°F88%1020.6 hPa

Wind History from HSA (wind in knots)
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Last 24hr------------------NE5NE5E5E5E54S5S3SE44E4SE4SE4CalmCalm
1 day ago------------------Calm4NE6NE10E8E4E4E4E4NE6NE7NE5NE4NE5--
2 days ago------------------CalmN10N10
G15
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G20
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G19
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--N12N5N6N3N5

Tide / Current Tables for Bay St. Louis, Mississippi
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Bay St. Louis
Click for Map
Thu -- 12:19 AM CDT     1.42 feet High Tide
Thu -- 06:46 AM CDT     Moonrise
Thu -- 07:02 AM CDT     Sunrise
Thu -- 09:35 AM CDT     0.74 feet Low Tide
Thu -- 02:12 PM CDT     New Moon
Thu -- 06:21 PM CDT     Sunset
Thu -- 06:40 PM CDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.41.41.41.31.21.110.90.80.70.70.80.80.90.911.11.11.21.31.31.41.51.5

Tide / Current Tables for Cat Island (West Point), Mississippi
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Cat Island (West Point)
Click for Map
Thu -- 06:45 AM CDT     Moonrise
Thu -- 07:01 AM CDT     Sunrise
Thu -- 08:00 AM CDT     0.76 feet Low Tide
Thu -- 02:12 PM CDT     New Moon
Thu -- 06:21 PM CDT     Sunset
Thu -- 06:40 PM CDT     Moonset
Thu -- 10:40 PM CDT     1.69 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.51.41.31.210.90.80.80.80.80.80.9111.11.11.21.21.31.41.51.61.71.7

Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Southeast    EDIT
Geos

Wind Forecast for New Orleans/Baton Rouge, LA (5,6,7,8)
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Ground Weather Radar Station New Orleans/Baton Rouge, LA
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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.