Marine Weather and Tides
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
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|Sunrise 6:27AM||Sunset 7:29PM||Sunday August 25, 2019 7:07 PM CDT (00:07 UTC)||Moonrise 1:16AM||Moonset 3:34PM||Illumination 21%|
7 Day Forecast for Marine Location Near Gulfport, MSHourly EDIT Help
Area Discussion for - New Orleans/Baton Rouge, LA  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus64 klix 252048|
area forecast discussion
national weather service new orleans la
348 pm cdt Sun aug 25 2019
Short term No major shifts in thinking through Tuesday night in
terms of the forecast. The combination of a shortwave trough axis
and a pool of deeper tropical moisture associated with a tropical
wave merging with the upper level trough will keep higher rain
chances in the forecast through tomorrow morning. Have likely to
categorical pop values in place for the entire forecast area, and
locally heavy rainfall of 2 to 3 inches could still occur tonight
into early tomorrow morning. Given this threat, have decided to
keep the flash flood watch in effect for tonight.
All of the guidance is in agreement that the trough axis will
begin to stall as it moves offshore of southeast louisiana and
east of coastal mississippi, and that the pool of deeper tropical
moisture will also shift toward alabama and georgia. As a result,
gradually decreasing rain chances are in the forecast for
tomorrow afternoon and evening across much of the forecast area.
However, the trough axis will linger over the coastal waters
tomorrow night. Forcing associated with this trough axis combined
with maximized instability over the waters during the overnight
and early morning hours should support likely pop values in sounds
and offshore marine zones. Temperatures through tomorrow
afternoon will remain cooler than average due to the expected
cloud cover in place.
The trough axis will shift back inland during the day on Tuesday,
and this will support scattered shower and thunderstorm
development from late morning through the early evening hours
across much of the forecast area. Have decided to go with high end
chance pop values of 50 percent to reflect this risk. Temperatures
on Tuesday will also climb back to more normal as a more typical
partly cloudy sky is expected. Any convection should die off over
land based zones in the evening hours, but land breeze induced
convection should fire up over the eastern waters later Tuesday
Long term Wednesday into Wednesday night will be a period of
transition as a much stronger northern stream trough axis dives
into the southeastern conus, and an associated surface boundary
slides through the forecast area. This front will serve as a focus
for scattered shower and thunderstorm activity Wednesday afternoon
into evening, and drier air in the mid-levels could support a few
stronger wind events with any deeper thunderstorms that develop
Wednesday afternoon and evening. Strong dry air advection into the
region late Wednesday night will lead to clearing skies and lower
humidity values. Lows should dip into the lower 70s over the
northern part of the CWA by Thursday morning.
The strong dry air advection on the back of a deep layer northeast
flow pattern will allow for a very stable airmass to develop on
Thursday and persist through Saturday. Mostly clear skies, lower
humidity values, and a larger diurnal range can be expected.
Precipitable water values will be well below average at an inch or
less through Saturday morning. By Saturday afternoon, an increase
in onshore flow should push precipitable water values up to around
1.5 inches, and this could support isolated convection south of
the i-10 corridor. The larger than average diurnal range will
allow low temperatures to dip into the upper 60s and lower 70s for
areas along and north of the i-10 corridor from Thursday night
through Saturday night. South of the i-10 corridor lows in the low
to middle 70s are forecast. Highs will warm into the lower 90s
each day, and the low humidity values should keep heat index
readings in the mid to upper 90s. Overall, these are pleasant
conditions for late august.
A weak inverted trough axis should slide into the area on Sunday,
and a pool of deeper tropical moisture will accompany this trough.
Precipitable water values should rise to around 2 inches by
Sunday afternoon, and this will support more typical shower and
thunderstorm development. Pop values are forecast to be in the 30
to 40 percent range, and temperatures will be near average.
Overall, a return to more typical summer weather is expected for
the beginning of september.|
Aviation A low pressure system passing over the terminals
through tomorrow morning will keep lower ceilings and light to
moderate rain with some embedded thunderstorms in the forecast at
all of the terminals through tomorrow morning. Ceilings should
generally range from 1000 to 2000 feet resulting MVFR and fuel
alternate conditions through the evening hours. Visibilities are
expected to range from 3 to 5 miles as the light to moderate rain
persists. However, model guidance is indicating a band of
thunderstorms potentially affecting kmsy, knew, kasd, and khdc
between 00z and 03z. Have decided to include a tempo group over
this time period at these terminals with ifr visibility
restrictions. At kbtr, khdc, and kmcb prevailing ifr ceilings
between 500 and 1000 feet will be possible between 03z and 15z
tonight as the shield of rain passes through. Conditions should
begin to improve back into MVFR range at these terminals after 15z
tomorrow as the rain shield pulls to the east.VFR conditions
should begin to develop at all of the terminals between 18z and
21z tomorrow outside of the convective threat.
Marine A brief period of stronger winds may develop over the
western waters late tonight into tomorrow morning as a low
pressure system slides through the region. Southerly winds of
around 15 knots will be possible for a few hours. Otherwise,
prevailing onshore flow of 10 to 15 knots is expected through
Tuesday along with seas of 1 to 3 feet. A cold front will pass
through the waters on Wednesday, and winds will turn more
westerly and then northwesterly through the day. Wednesday night
through Friday will see northerly winds of 10 to 15 knots develop
after the front pushes further into the gulf, and seas of 1 to 3
feet will continue to be possible.
Dss code: yellow.
Activities: marginal to slight risk of excessive rainfall. Flash
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
Preliminary point temps pops
Mcb 71 85 73 91 70 70 20 50
btr 74 88 76 92 60 70 20 40
asd 72 86 74 91 90 80 20 50
msy 76 87 77 91 90 70 20 50
gpt 74 84 76 89 90 90 30 50
pql 73 84 74 90 70 90 40 40
Lix watches warnings advisories
La... Flash flood watch through Monday morning for laz036-037-039-040-
Ms... Flash flood watch from 7 pm cdt this evening through Monday
morning for msz069>071-077-080.
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
|Stations||Dist||Age||Wind||Air Temp||Water Temp||Waves||Pressure||DewPt|
|WYCM6 - 8747437 - Bay Waveland Yacht Club, MS||13 mi||56 min||SE 4.1 G 6||81°F||88°F||1012.4 hPa|
|PNLM6 - 8741533 - Pascagoula NOAA Lab, MS||27 mi||56 min||85°F|
|PTBM6 - 8741003 - Petit Bois Island, MS||32 mi||56 min||SW 11 G 12||83°F||1012.4 hPa|
|GDXM6 - Grand Bay Reserve, MS||35 mi||83 min||SW 6||83°F||1013 hPa||76°F|
|GBRM6||36 mi||128 min||83°F|
|KATA1 - Katrina Cut, AL||46 mi||68 min||SW 5.1||80°F||1012.5 hPa (-0.7)|
|SHBL1 - 8761305 - Shell Beach, LA||46 mi||56 min||SSW 20 G 24||76°F||88°F||1012.8 hPa|
Wind History for West Pier, Port of Gulfport, MS(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports. Follow links for more data.
|Gulfport - Gulfport-Biloxi International Airport, MS||3 mi||75 min||N 0||10.00 mi||Fair||80°F||75°F||87%||1012 hPa|
|Keesler Air Force Base / Biloxi, MS||10 mi||72 min||SSW 7||10.00 mi||Fair||81°F||76°F||88%||1012.4 hPa|
|Bay St. Louis, Stennis International Airport, MS||20 mi||17 min||Var 4||7.00 mi||Mostly Cloudy||81°F||77°F||89%||1011.8 hPa|
Link to 5 minute data for KGPT
Wind History from GPT (wind in knots)
|1 day ago||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||N||N||NE||NE||NE||Calm||S||SE||S||SE||S||S|
|2 days ago||S||S||S||S||SE||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||S||S||S||S||SE||S||SW |
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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 (20,4,5,8)(on/off)  Help
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