Monday, April24, 2017

Marine Weather and Tides
Gulfport, MS

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:17AMSunset 7:31PM Monday April 24, 2017 8:14 AM CDT (13:14 UTC) Moonrise 5:13AMMoonset 5:42PM Illumination 3% Phase: Waning Crescent; Moon at 28 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- 342 Am Cdt Mon Apr 24 2017
Today..Northwest winds 10 to 15 knots. Waves 1 to 3 feet. Dominant period 4 seconds.
Tonight..Northwest winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds.
Tuesday..Northwest winds 5 to 10 knots becoming southwest 10 to 15 knots in the late morning and afternoon. Waves 1 to 2 feet. Dominant period 4 seconds.
Tuesday night..South winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds.
Wednesday..South winds 15 to 20 knots. Waves 2 to 4 feet. Dominant period 4 seconds.
Wednesday night..South winds 15 to 20 knots. Waves 3 to 5 feet. Dominant period 4 seconds. Chance of showers and Thunderstorms after midnight.
Thursday..South winds 15 to 20 knots. Waves 2 to 4 feet. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Thursday night..South winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds.
Friday..South winds 15 to 20 knots. Waves 3 to 5 feet.
Friday night..Southeast winds 15 to 20 knots. Waves 3 to 5 feet.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 342 Am Cdt Mon Apr 24 2017
Synopsis..Cool high pressure area will build into the north gulf today. The high will begin to shift to the east by Tuesday and Wednesday. A cold front will move into the coastal waters Wednesday into Thursday.

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

Area Discussion for - New Orleans/Baton Rouge, LA
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Fxus64 klix 240910
area forecast discussion
national weather service new orleans la
410 am cdt Mon apr 24 2017

Latest surface analysis showed a 1006mb low over south carolina with
a cold front extending south through florida and east gulf of
mexico. A 1017mb high pressure was located over south texas. Light
north to northwest flow was noted over the forecast land area
this morning. Latest upper air analysis and infrared satellite
imagery revealed a low/tight cyclonic circulation over northern

Short term
Upper level low will continue to push east across georgia today.

Cold air advection will become nil as an upper level ridge axis
starts to build in across the lower mississippi valley today and
tonight. Surface high and dry air will settle over region tonight.

Surface high will shift east Tuesday. Another upper level trough
is expected to move across the central plains. This will yield a
lee side trough over central and southern plains. GFS and ecmwf
are showing a stronger disturbance associated at the base of the
trough on Wednesday. Moisture return will occur over east texas
Tuesday night. The main upper level trough will deepen from
minnesota to north central texas by Wednesday. The base of trough
becomes slightly negatively tilted from east oklahoma to northeast
texas. Surface front will push east across the forecast area
Wednesday night. Precipitable water values up to 1.9 inches will
pool along and ahead of front. The associated dynamics will sweep
mid and parts of lower mississippi valley. Surface base cape
values increase up to 1800 to 2800 j/kg north to south across the
forecast area and helicity around 230 to 180 m/s north to south
across the forecast area Wednesday night according to gfs. Have
increased chance of convection for Wednesday night into early
Thursday. In addition, will use stronger wording for strong storms
and possibly severe storms Wednesday night in the outlook.

Long term
Not much of a passage with the mid week system as instability and
moisture should return by Thursday night. As a result, lower
levels will remain humid on Friday and a slight chance of some
convection possible on Saturday. GFS show a deep upper level
closed low over the southern plains Saturday night while ecmwf
show a long wave developing from minnesota to texas. Both
scenarios create a strong wind field across the lower mississippi
valley Saturday through Sunday. Aside from scattered to numerous
convection anticipated on Sunday and Sunday night, winds will be
very strong and may hamper outdoor activities Saturday and Sunday.

As a result, wind advisories and/or possibly high wind warnings
could be issued later this week for part or all of the area this
weekend. Moisture and instability will be in play and synoptic
pattern may yield around of strong to severe convection across
part or all of the forecast area Sunday afternoon through Monday

11-3.9u satellite and surface observations indicate that low level
clouds have exited the area. Other than patchy light fog at sunrise
that may temporarily drop vis to MVFR,VFR conditions will prevail
at all terminals today.


Post frontal offshore winds will persist today as upper level trough
swings through the southeastern united states. Surface ridge quickly
moving in behind this trough is already beginning to relax the wind
field in the tidal lakes and nearshore waters. CAA will maintain
exercise caution conditions offshore today but likely not much
longer than midday. Winds will switch back to southerly Tuesday as
the ridge shifts east of the area. Wind speeds will increase back
into the mid/upper teens by Wednesday as a weak upper trough and
developing surface trough move east across the lower mississippi
valley. The local coastal waters will be on the southern end of this
weak front and thus not expecting much more than a brief west wind
behind the boundary. The bigger concern for coastal waters will be
this weekend when models show a very amplified upper trough and deep
surface low moving across the country. Strong small craft to
possibly gale conditions Saturday into Sunday.


Decision support
Dss code... Green.

Deployed... None.

Activation... None.

Activities... None.

Decision support service (dss) code legend:
green = no weather impacts that require action
blue = long fused watch/warning/advisory in effect or high
visibility event
yellow = heightened impacts with short fused
watch/warning/advisory issuances; radar support
orange = high impacts - slight to moderate risk of severe weather;
nearby tropical events, hazmat or other large episodes
red = full engagement for moderate risk of severe weather; direct
tropical threats; events of national significance.

Preliminary point temps/pops
Mcb 76 51 81 60 / 0 0 0 0
btr 77 55 81 63 / 0 0 0 0
asd 78 56 81 64 / 0 0 0 0
msy 77 60 80 66 / 0 0 0 0
gpt 78 60 79 68 / 0 0 0 0
pql 78 57 80 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 13 mi45 min WNW 9.9 G 12 54°F 73°F1012 hPa
PNLM6 - 8741533 - Pascagoula NOAA Lab, MS 27 mi45 min 75°F
DKCM6 - 8741501 - Dock C, Pascagoula, MS 27 mi45 min NW 7 G 8 56°F 1011.7 hPa
ULAM6 - 8741041 - Dock E. Port of Pascagoula, MS 30 mi45 min 75°F
RARM6 - 8741094 - Range A rear, Pascagoula, MS 30 mi45 min NW 6 G 8 56°F 1011.5 hPa
PTBM6 - 8741003 - Petit Bois Island, MS 32 mi45 min NNW 13 G 17 58°F 1012.5 hPa
42067 - USM3M02 32 mi95 min NNW 16 G 19 60°F 2 ft1011 hPa54°F
GDXM6 - Grand Bay Reserve, MS 35 mi90 min NW 7 54°F 1012 hPa51°F
KATA1 - Katrina Cut, AL 46 mi75 min NNW 15 58°F 1010.8 hPa (+1.0)
SHBL1 - 8761305 - Shell Beach, LA 46 mi45 min W 11 G 12 58°F 73°F1012.6 hPa

Wind History for West Pier, Port of Gulfport, MS
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1 day
2 days

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Gulfport - Gulfport-Biloxi International Airport, MS3 mi22 minNW 910.00 miFair56°F51°F84%1012 hPa
Keesler Air Force Base / Biloxi, MS10 mi17 minNW 1010.00 miFair57°F50°F77%1012.5 hPa
Bay St. Louis, Stennis International Airport, MS20 mi85 minN 010.00 miFair48°F44°F87%1012.5 hPa

Wind History from GPT (wind in knots)
Last 24hrN11NW8NW13N10NW12
1 day agoCalmSW6S4S9SW8SW8SW8S11S8S12S10
2 days ago--CalmSE8S8S12

Tide / Current Tables for Gulfport, Gulfport Harbor, Mississippi
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Click for Map
Mon -- 05:12 AM CDT     Moonrise
Mon -- 05:35 AM CDT     0.65 feet Low Tide
Mon -- 06:19 AM CDT     Sunrise
Mon -- 11:31 AM CDT     1.14 feet High Tide
Mon -- 05:41 PM CDT     Moonset
Mon -- 06:12 PM CDT     0.51 feet Low Tide
Mon -- 07:29 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Tide / Current Tables for Cat Island, Mississippi
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Cat Island
Click for Map
Mon -- 05:13 AM CDT     Moonrise
Mon -- 05:18 AM CDT     0.76 feet Low Tide
Mon -- 06:19 AM CDT     Sunrise
Mon -- 11:23 AM CDT     1.02 feet High Tide
Mon -- 05:42 PM CDT     Moonset
Mon -- 06:28 PM CDT     0.52 feet Low Tide
Mon -- 07:29 PM CDT     Sunset
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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Weather Map
IR Satellite Image from GEOS

GOES Local Image of Southeast    EDIT

Wind Forecast for New Orleans/Baton Rouge, LA (9,2,3,4)
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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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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.