Friday, January19, 2018

Marine Weather and Tides
Gulfport, 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 6:51AMSunset 5:23PM Friday January 19, 2018 11:08 AM CST (17:08 UTC) Moonrise 9:32AMMoonset 8:50PM Illumination 9% Phase: Waxing Crescent; Moon at 3 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
    EDIT      (on/off)   Help
GMZ532 Mississippi Sound- 929 Am Cst Fri Jan 19 2018
Rest of today..East winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds.
Tonight..East winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds.
Saturday..Southeast winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Slight chance of light rain.
Saturday night..Southeast winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Sunday..Southeast winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds.
Sunday night..South winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds. Slight chance of showers after midnight.
Monday..Southwest winds 10 to 15 knots becoming west late in the afternoon. Waves 2 to 4 feet. Dominant period 4 seconds. Showers likely and slight chance of Thunderstorms.
Monday night..North winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds.
Tuesday..Northeast winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Tuesday night..Northeast winds 10 to 15 knots. Waves 2 to 4 feet.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 929 Am Cst Fri Jan 19 2018
Synopsis..High pressure will shift to the east today. A cold front will move through the area Monday. A trough will develop over the northern gulf by mid week.

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

Area Discussion for - New Orleans/Baton Rouge, LA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus64 klix 191404
area forecast discussion
national weather service new orleans la
804 am cst Fri jan 19 2018

Sounding discussion
12z sounding shows a much drier air mass in place now with pw
values below a half inch now. Strong inversion noted at 750 mb
with temperatures a good 20 degrees warmer in the warm nose. Winds
are light and variable from the surface to around 5000 feet, with
surface high pressure centered just to our north. Winds shift to
the north and then west in the mid and upper levels.

Prev discussion issued 317 am cst Fri jan 19 2018

upper trough near the west coast of the country is forcing
ridging across the center of the country and relaxing the eastern
trough. Surface high pressure centered near hattiesburg this
morning, and is moving slowly eastward. Upper wave noted over
south texas is spreading "warm" air back toward the area hot on
the heels of the high pressure. This is reflected in the mid level
cloud deck that has moved into much of the northern half of the
area. Those clouds have allowed temperatures to warm into the
middle 30s overnight across the baton rouge area. Will cancel most
or all of the hard freeze warning with forecast issuance. Clouds
not occurring south of interstate 10, and likely to let the freeze
warning there ride through expiration.

Short term...

while the next 48 hours won't see weather that will make
headlines, that doesn't mean it's easy to verify. Upper wave over
south texas this morning will gradually move along the gulf coast
through Saturday, and will be centered near jacksonville on
Sunday. As this occurs, the next system will move out of the
southern rockies on Sunday.

As we see this morning, the warm advection with this system is
already sufficient to produce mid-level clouds. We'll see with the
morning soundings just how deep this moisture is. Just how much,
if any, sunshine do we see over the next couple of days is the
question? NAM and GFS guidance becoming much more pessimistic on
sunshine over the next two days, while the ECMWF suggests a good
bit of sun. Considering what we are seeing on satellite this
morning, trending toward the us solutions. This means going toward
the lower or middle end of the guidance envelope on highs and the
middle or upper end on overnight lows through Saturday. Will also
carry a minimal mention of rain (20%) for Saturday as the upper
wave moves through the area. Any rain that does occur will be

As the next upper system kicks out of the rockies on Sunday,
moisture and warm air advection increases. Could see a little more
sun, and rain will begin to approach from the west, but will keep
most of the area dry during the daytime hours on Sunday. By this
point, we'll need to start concerning ourselves with the potential
for sea fog near the coast as dew points finally increase into the
50s. Away from marine influences, highs Sunday could get into the
lower 70s in a few areas. 35
long term...

ecmwf and GFS in decent agreement with Sunday's rockies system
lifting into the great lakes Tuesday, with upper ridging building
into the mississippi river valley in it's wake for the back half
of the next work week. This will push a cold front through the
area on Monday. Will carry categorical pops with the frontal
passage, and at least a limited mention of thunder. Beyond Monday
night, with upper ridging building in, mostly dry weather expected
Tuesday and Wednesday. Differences between extended model
solutions beyond Wednesday means a low confidence forecast for the
end of the week. At some point next weekend, beyond the range of
this forecast package, another strong cold front will move through
the area with showers and thunderstorms.

Temperatures Sunday night into Monday ahead of the front will be
well above normal. ECMWF gfs numbers actually pretty close and
accepted. As the air behind this front will be of pacific origin
as well, and temperatures will be near to a bit above normal. 35

ceilings will move over most terminals this morning. Most will be
ovc080 but will lower to ovc060 by late morning or noon. These
ceilings should remain rather stable at ovc050-060 through tonight.

All terminals will show some possibility towards observing either
-dz or -ra by Saturday morning. If any of this precip occurs,
ceilings may move in and out with it at bkn020. Will hold off for
now as pop numbers show low end chances. But this could be added
with later updates.


strong arctic high pressure will shift east today bringing return
flow back to the northern gulf tonight into Saturday along with some
rain. Foggy conditions near the coast could develop over the weekend
ahead of the next cold front which will move through Monday. Another
stretch of strong northerly winds look to occur again behind this
front. A continued unsettled pattern is expected to evolve after
Monday's frontal passage as a sfc low develops over the western

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 51 39 64 49 0 0 20 10
btr 52 42 66 52 0 0 20 10
asd 53 43 65 51 0 0 20 10
msy 53 47 66 53 0 0 20 10
gpt 50 42 63 51 0 0 20 10
pql 53 40 65 49 0 0 20 10

Lix watches warnings advisories
La... Freeze warning until 10 am cst this morning for laz056>065.

Gm... None.

Ms... Hard freeze warning until 10 am cst this morning for msz082.

Gm... None.

Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WYCM6 - 8747437 - Bay Waveland Yacht Club, MS 13 mi68 min ENE 1.9 G 1.9 45°F 38°F1029.7 hPa (+0.9)
DKCM6 - 8741501 - Dock C, Pascagoula, MS 27 mi68 min N 4.1 G 5.1 44°F 1029.9 hPa (+1.1)
PNLM6 - 8741533 - Pascagoula NOAA Lab, MS 27 mi68 min 45°F
ULAM6 - 8741041 - Dock E. Port of Pascagoula, MS 30 mi68 min 53°F
RARM6 - 8741094 - Range A rear, Pascagoula, MS 30 mi68 min ENE 2.9 G 4.1 46°F 1029.6 hPa (+1.1)
PTBM6 - 8741003 - Petit Bois Island, MS 32 mi68 min NE 7 G 8 42°F 1030.8 hPa (+1.3)
GDXM6 - Grand Bay Reserve, MS 35 mi83 min ENE 5.1 40°F 1031 hPa15°F
KATA1 - Katrina Cut, AL 46 mi68 min NE 6 39°F 1030.8 hPa (+2.0)
SHBL1 - 8761305 - Shell Beach, LA 46 mi68 min NNE 5.1 G 6 42°F 44°F1029.5 hPa (+0.7)

Wind History for West Pier, Port of Gulfport, MS
(wind in knots)    EDIT      (on/off)   Help
1 day
2 days

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Gulfport - Gulfport-Biloxi International Airport, MS3 mi75 minENE 510.00 miFair45°F17°F33%1029.8 hPa
Keesler Air Force Base / Biloxi, MS10 mi2.2 hrsE 410.00 miFair38°F19°F47%1030.1 hPa
Bay St. Louis, Stennis International Airport, MS20 mi78 minNE 310.00 miClear45°F19°F37%1030.1 hPa

Wind History from GPT (wind in knots)
Last 24hrNE8NE8--6N6NW3CalmCalmSW3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmNW4CalmE3E54
1 day agoNW16
2 days agoN15

Tide / Current Tables for Gulfport, Gulfport Harbor, Mississippi
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Click for Map
Fri -- 06:52 AM CST     Sunrise
Fri -- 08:31 AM CST     Moonrise
Fri -- 08:45 AM CST     0.12 feet Low Tide
Fri -- 05:21 PM CST     Sunset
Fri -- 07:50 PM CST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Tide / Current Tables for Cat Island, Mississippi
   EDIT      (on/off)   Help   One Week of Data
Cat Island
Click for Map
Fri -- 06:52 AM CST     Sunrise
Fri -- 08:31 AM CST     Moonrise
Fri -- 09:34 AM CST     -0.63 feet Low Tide
Fri -- 05:21 PM CST     Sunset
Fri -- 07:51 PM CST     Moonset
Fri -- 11:49 PM CST     0.90 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Weather Map and Satellite Images
       (on/off)   Help
Weather Map
IR Satellite Image from GEOS

GOES Local Image of Southeast    EDIT

Wind Forecast for New Orleans/Baton Rouge, LA (12,3,4,5)
      (on/off)   Help

Ground Weather Radar Station Mobile, AL
   (on/off)   Help
weather_mapweather_map weather_map

Gulf Stream Current

Ad by Google

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 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 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.