Thursday, April27, 2017 L-36.com


Marine Weather and Tides
DeLisle, 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 6:14AMSunset 7:33PM Thursday April 27, 2017 9:28 PM CDT (02:28 UTC) Moonrise 7:25AMMoonset 9:05PM Illumination 4% Phase: Waxing Crescent; Moon at 2 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- 345 Pm Cdt Thu Apr 27 2017
.small craft exercise caution in effect from 1 am cdt Friday through Friday morning...
Tonight..South winds 10 to 15 knots increasing to 15 to 20 knots after midnight. Waves 2 to 4 feet. Dominant period 4 seconds. Chance of showers.
Friday..South winds 15 to 20 knots. Waves 3 to 5 feet. Dominant period 4 seconds. Slight chance of showers and Thunderstorms.
Friday night..Southeast winds 15 to 20 knots. Waves 3 to 5 feet. Dominant period 4 seconds.
Saturday..Southeast winds 15 to 20 knots. Waves 3 to 5 feet. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Saturday night..Southeast winds 20 to 25 knots. Waves 3 to 5 feet. Dominant period 4 seconds.
Sunday..South winds 25 to 30 knots. Waves 3 to 6 feet. Dominant period 4 seconds. Showers and Thunderstorms likely.
Sunday night..South winds 25 to 30 knots becoming west 20 to 25 knots with gusts to near 40 knots in the late evening and overnight. Waves 3 to 5 feet with occasional waves to 6 feet. Dominant period 4 seconds. Showers and Thunderstorms in the evening, then showers and Thunderstorms likely after midnight.
Monday..Northwest winds 15 to 20 knots easing to 5 to 10 knots in the afternoon. Waves 3 to 5 feet subsiding to 1 to 2 feet in the afternoon.
Monday night..Northwest winds 5 to 10 knots becoming northeast after midnight. Waves 1 to 2 feet.
Tuesday..Southeast winds 10 to 15 knots. Waves 1 to 2 feet.
Tuesday night..South winds 10 to 15 knots. Waves 1 to 2 feet. Slight chance of showers and Thunderstorms.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 345 Pm Cdt Thu Apr 27 2017
Synopsis..A strengthening low pressure system will affect the coastal waters through the weekend. The low will push away from the area by Monday allowing high pressure to settle in for Tuesday.

7 Day Forecast for Marine Location Near DeLisle, MS
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location: 30.36, -89.27     debug


Area Discussion for - New Orleans/Baton Rouge, LA
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Fxus64 klix 272103
afdlix
area forecast discussion
national weather service new orleans la
403 pm cdt Thu apr 27 2017

Short term
In a period of transition this evening through much of
Saturday as weak influences of this morning's frontal passage
collapse and return flow becomes better established Friday.

Models still indicating some low end convection amassing along
warm frontogenetic boundary along the gulf coast near sunrise
Friday that migrates rather quickly northward during the morning
hours. Will maintain 20% chance of showers with some semblance of
a focus in place. After this feature lifts north, the area will
then fall under the influence of deep fetched onshore flow with
a tightening gradient through Sunday. This will bring about
breezy conditions and some minor tidal response along the coast,
though not as pronounced on the south wind as it would be with a
east wind. Temperatures will be warm and increasingly humid
through the early part of the weekend.

Long term
The long term period from Sunday through next Wednesday will be
active mainly on two distinct systems. The Sunday system has at
least four identifiable points of concern.

Coastal flooding: anomalies generally 1 foot or less mainly
in south facing bays (atchafalaya, barataria, bay of st. Louis).

Rainfall: an area of 3.5" to 4" along pearl river and gulf
drainage basin, which may result in some minor river flooding.

An esflix - hydrologic outlook was posted for this concern.

Winds: generally 20-25 mph gusts to 35 mph gradient wind
pre-frontal that abates to much lighter levels post-frontal.

Convective: 15% chance of severe t-storms with all modes in play.

Anticipated frontal timing windows for point locations Sunday:
new roads area 6 to 9 am,
mcb-btr-patterson 8 to 11 am,
bogalusa- hammond-morgan city 10 to 2 pm,
bay st louis-new orleans-houma 2pm to 6 pm,
ocean springs-boothville 5 pm-9 pm.

Beyond Sunday, some continental influences of somewhat cooler but
drier air from Sunday night through Monday before the process
starts again Monday night with return flow ahead of next system.

Models are in pretty good agreement in bringing system into the
area aligned with heavy rain fetch and focus during the day
Wednesday and not clearing until cold front swings through
later in the day Thursday. Any heavy rainfall from this episode
would exacerbate any swollen river conditions that will likely
be in place from the Sunday episode, hence the hydrologic outlook
basis.

Aviation
Vfr conditions will remain over the terminals through around 06z.

After 06z, a surge of low level moisture into the area will allow a
low stratus deck to spread over all of the terminals by 08z.

Persistent MVFR ceilings of 1000 to 2000 feet can be expected for
the remainder of the forecast period. However, a brief window of ifr
conditions could occur at kbtr, kmcb, and khdc as ceilings fall to
around 700-800 feet between 10z and 14z. Increased southerly winds
of 10 to 15 knots with higher gusts could also occur after 14z. 32

Marine
The pressure gradient over the gulf will increase quickly overnight
in response to a deepening low pressure system over the plains.

Southerly winds of around 15 knots are expected tonight, and these
winds should increase to around 20 knots tomorrow. Small craft
advisories are posted for the gulf waters tomorrow due to these
winds and seas of up to 7 feet. The wind field should remain
elevated tomorrow, and have the small craft advisory continue for
waters west of the river into Saturday morning. East of the river,
winds may relax enough to prompt only exercise caution wording. This
respite for the eastern waters will be brief though, as the low
continues to deepen and moves closer to the area. The tightening
pressure gradient will result in strong onshore winds of 25 to 30
knots impacting the coastal waters from Saturday afternoon through
Sunday evening. Very rough seas of up to 12 feet could also impact
the open gulf waters during this period. Over the sounds and lakes
waves of up to 6 feet will be possible. As a result, an extended
period of small craft advisory flags will be in effect.

Winds will shift to the northwest late Sunday night and Monday in
the wake of the low pressure system and cold front. Winds should
remain elevated at around 20 knots through morning hours on Monday
and seas will remain rough. Conditions will begin to improve Monday
night and Tuesday as high pressure settles directly over the waters.

Winds will veer back to the east by Tuesday and decrease to between
10 and 15 knots. Seas should also fall back to 2 to 4 feet by
Tuesday morning. 32

Decision support
Dss code... Blue.

Deployed... None.

Activation... None.

Activities... Monitoring severe potential for Sunday.

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 64 84 71 86 / 10 20 10 30
btr 67 85 73 87 / 20 20 10 30
asd 69 84 72 85 / 30 30 10 30
msy 71 84 73 85 / 30 20 10 20
gpt 71 80 74 81 / 30 20 10 30
pql 67 82 68 83 / 30 30 10 30

Lix watches/warnings/advisories
La... None.

Gm... Small craft advisory from 7 am Friday to 10 am cdt Saturday for
gmz550-552-570-572.

Small craft advisory from 7 am to 4 pm cdt Friday for gmz555-557-
575-577.

Ms... None.

Gm... Small craft advisory from 7 am Friday to 10 am cdt Saturday for
gmz552-570-572.

Small craft advisory from 7 am to 4 pm cdt Friday for gmz557-575-
577.

24/rr
32


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WYCM6 - 8747437 - Bay Waveland Yacht Club, MS 4 mi41 min S 8 G 11 76°F 77°F1009.1 hPa
PNLM6 - 8741533 - Pascagoula NOAA Lab, MS 37 mi41 min 78°F
DKCM6 - 8741501 - Dock C, Pascagoula, MS 37 mi131 min SSE 7 G 8.9 76°F 1008.9 hPa
SHBL1 - 8761305 - Shell Beach, LA 40 mi41 min SE 8 G 9.9 74°F 78°F1009.2 hPa
RARM6 - 8741094 - Range A rear, Pascagoula, MS 40 mi41 min S 6 G 9.9 76°F 1009.5 hPa
42067 - USM3M02 40 mi169 min S 3.9 G 5.8 76°F 3 ft1008.8 hPa70°F
ULAM6 - 8741041 - Dock E. Port of Pascagoula, MS 41 mi41 min 76°F
PTBM6 - 8741003 - Petit Bois Island, MS 42 mi41 min S 9.9 G 11 75°F 1010.5 hPa
GDXM6 - Grand Bay Reserve, MS 45 mi104 min S 7 76°F 1010 hPa71°F

Wind History for Bay Waveland Yacht Club, MS
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Bay St. Louis, Stennis International Airport, MS10 mi94 minS 410.00 miFair68°F60°F78%1009.5 hPa
Gulfport - Gulfport-Biloxi International Airport, MS11 mi36 minS 410.00 miFair74°F68°F82%1009.3 hPa
Keesler Air Force Base / Biloxi, MS19 mi91 minS 510.00 miFair75°F68°F78%1009.4 hPa

Wind History from HSA (wind in knots)
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Last 24hrSE12------------------CalmN4N10NW6N6NE633SW5SE9SE9S9S4S4
1 day agoS3------------------S6S6S10
G16
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SE12SE12--SE8SE6SE12SE12
2 days agoCalm------------------CalmCalmW44SW8SW6SW10SW8
G12
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S8SW8S9S7S3

Tide / Current Tables for Wolf River, Henderson Avenue bridge, Mississippi
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Wolf River
Click for Map
Thu -- 06:17 AM CDT     Sunrise
Thu -- 07:25 AM CDT     Moonrise
Thu -- 12:44 PM CDT     1.89 feet High Tide
Thu -- 07:32 PM CDT     Sunset
Thu -- 09:04 PM CDT     Moonset
Thu -- 10:43 PM CDT     -0.14 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.20.40.50.70.811.11.31.41.51.71.81.91.91.81.71.41.10.80.50.2-0-0.1-0.1

Tide / Current Tables for Gulfport, Gulfport Harbor, Mississippi
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Gulfport
Click for Map
Thu -- 06:16 AM CDT     Sunrise
Thu -- 07:24 AM CDT     Moonrise
Thu -- 12:04 PM CDT     1.77 feet High Tide
Thu -- 07:31 PM CDT     Sunset
Thu -- 08:54 PM CDT     -0.02 feet Low Tide
Thu -- 09:03 PM CDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.60.70.80.90.91111.11.31.51.71.81.71.61.41.20.90.50.20-000.2

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 (22,6,7,8)
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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.