Thursday, July18, 2019 L-36.com


Marine Weather and Tides
St. Martin, MS

Version 3.4
NOTICE
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 6:04AMSunset 7:59PM Thursday July 18, 2019 10:36 PM CDT (03:36 UTC) Moonrise 9:28PMMoonset 7:32AM Illumination 96% Phase: Waning Gibbous; Moon at 17 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 Cdt Thu Jul 18 2019
Rest of tonight..Southwest winds 5 to 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Friday..Southwest winds near 5 knots becoming south in the afternoon. Waves 1 foot or less. Dominant period 4 seconds.
Friday night..Southwest winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Slight chance of showers after midnight. Slight chance of Thunderstorms after midnight.
Saturday..Southwest winds near 5 knots becoming south in the afternoon. Waves 1 foot or less. Dominant period 4 seconds. Chance of showers and slight chance of Thunderstorms.
Saturday night..Southwest winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Chance of showers after midnight. Slight chance of Thunderstorms after midnight.
Sunday..West winds near 5 knots becoming southwest in the afternoon. Waves 1 foot or less. Dominant period 4 seconds. Showers likely and chance of Thunderstorms.
Sunday night..Southwest winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Monday..West winds 5 to 10 knots. Waves 1 foot or less. Showers likely and chance of Thunderstorms.
Monday night..West winds 5 to 10 knots. Waves 1 to 2 feet. Chance of showers in the evening. Slight chance of Thunderstorms through the night. Showers likely after midnight.
Tuesday..West winds 5 to 10 knots. Waves 1 to 2 feet. Showers likely and chance of Thunderstorms.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 932 Pm Cdt Thu Jul 18 2019
Synopsis..Surface high pressure extending across the eastern gulf and into the coastal waters will remain in control through the weekend. A weak front will stall along the coast early next week.


7 Day Forecast for Marine Location Near St. Martin, MS
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location: 30.41, -88.9     debug


Area Discussion for - New Orleans/Baton Rouge, LA
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Fxus64 klix 182105
afdlix
area forecast discussion
national weather service new orleans la
405 pm cdt Thu jul 18 2019

Short term
About 20 minutes of excitement earlier this afternoon as a well formed
waterspout developed over western lake bornge near the mouth of
bayou bienvenue. This spout moved inland over the shoreline
marshes near the great flood barrier then lifted, as expected.

Several social media images and videos captured the event nicely
from various vantage points. The lake breeze boundary
intersections in that proximity, along with an outflow boundary
that was generated by the parent storm produced the waterspout on
the outflow leading edge on the NW side of the storm. The
subsequent boundary interactions established a zero propagation
region smack over the new orleans metro area - a process that is
all too common in the summer time. This resulted in stationary
storms that essentially rained themselves out over the eastern
half of the metro from mid-city into the ninth ward and n.O. East
areas. A few streets in ninth ward bywater area did flood briefly
during the peak of heaviest rainfall.

Friday could be a repeat as the overall pattern changes only
slightly and dominated mostly by lake and gulf breeze processes
and subsequent outflow features. Heading into Saturday, bermuda
ridge extension softens a bit with onshore flow advecting deeper
moisture for better rain chances, more in line with normal summer
coverage around 30-50%. Temperatures should be tempered by greater
rain and cloud coverage by Saturday.

Long term
The main concerns will be amplification of the upper level
height fields. Current zonal flow near the canadian border and
large barotropic high over the much of the lower half of the
nation will be buckling the start of the week. Troughing to
amplify over the eastern u.S. With strong ridge amplification in
the desert southwest will bring a surface frontal boundary into
the gulf states Tuesday. This front is expected to elongate over
the area and could become a focus of heavy rainfall for middle of
next week, given interactions with daily gulf breezes, brings
concerns of a flood potential in some places. There is ample time
to monitor model trends, but confidence is likely to increase over
time on both heavy rain and severe thunderstorm potential given an
out-of-season cold front in the presence of tropical moisture.

Aviation
Vfr conditions prevail at all area airports and are expected to
persist through the evening into the overnight hours. Msw

Marine
Southerly to southeasterly winds will persist through Monday of next
week. Beginning Tuesday through the end of next week, winds will be
more westerly and northerly. Winds are expected to be light (<15
knots) through the end of next week. Corresponding with the wind
speeds, the wave heights are expected to be average through the end
of next week. Msw

Decision support
Dss code: blue.

Deployed: none.

Activation: none.

Activities: ongoing river flooding
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 73 92 73 90 10 10 0 40
btr 74 90 75 89 10 30 0 50
asd 75 92 75 90 10 10 10 50
msy 77 91 77 89 30 30 10 50
gpt 77 90 76 88 0 10 10 50
pql 75 93 75 91 0 30 10 50

Lix watches warnings advisories
La... None.

Gm... None.

Ms... None.

Gm... None.

24 rr
msw


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PNLM6 - 8741533 - Pascagoula NOAA Lab, MS 18 mi55 min 87°F
WYCM6 - 8747437 - Bay Waveland Yacht Club, MS 23 mi55 min SSW 5.1 G 9.9 86°F 87°F1017.9 hPa
PTBM6 - 8741003 - Petit Bois Island, MS 25 mi55 min S 8 G 8.9
GDXM6 - Grand Bay Reserve, MS 26 mi52 min SSW 8 86°F 1019 hPa79°F
KATA1 - Katrina Cut, AL 38 mi67 min SW 8 1018.3 hPa
CRTA1 - Cedar Point, AL 41 mi97 min S 8.9 86°F 1017.3 hPa (+0.3)
MBPA1 44 mi49 min 84°F 78°F
DPIA1 - Dauphin Island, AL 45 mi37 min SW 6 G 7 85°F 1017.9 hPa (+1.1)
FMOA1 - 8734673 - Fort Morgan, AL 48 mi49 min SW 8.9 G 9.9 85°F 1017.9 hPa
MCGA1 - 8736897 - Coast Guard Sector Mobile, AL 48 mi49 min SSW 1.9 G 2.9
PTOA1 49 mi49 min 85°F 78°F

Wind History for West Pier, Port of Gulfport, MS
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Keesler Air Force Base / Biloxi, MS2 mi1.7 hrsSW 810.00 miFair85°F76°F77%1017.5 hPa
Gulfport - Gulfport-Biloxi International Airport, MS9 mi44 minSW 310.00 miFair86°F75°F72%1017.2 hPa
Moss Point - Trent Lott International Airport, MS20 mi44 minN 010.00 miFair80°F75°F85%1017.8 hPa

Wind History from BIX (wind in knots)
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Last 24hrSW6SW6W3--CalmCalmCalmCalmCalmCalmCalmCalmSW6SW10S10S8SW10S11SW10SW9SW10--SW8SW5
1 day ago----S8--SW8SW6W6CalmCalmCalmCalmCalmSW7S9S10S8SW7S8SW9SW9S9SW5SW6SW7
2 days agoS11S8S9S8S9S9S9S7S7S8SW7S7S6S9S8S8S7S9S11S9SW7SW6S6S7

Tide / Current Tables for Biloxi, Biloxi Bay, Mississippi
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Biloxi
Click for Map
Thu -- 06:05 AM CDT     Sunrise
Thu -- 07:31 AM CDT     Moonset
Thu -- 11:59 AM CDT     2.25 feet High Tide
Thu -- 07:57 PM CDT     Sunset
Thu -- 09:27 PM CDT     Moonrise
Thu -- 11:09 PM CDT     0.05 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-00.10.20.40.60.81.11.41.61.92.12.22.32.22.11.81.61.20.90.60.40.20.10.1

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


Weather Map and Satellite Images
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wmap_A
GOES 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 (23,6,7,8)
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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.