Monday, October23, 2017 L-36.com


Marine Weather and Tides
West Hattiesburg, 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 7:05AMSunset 6:17PM Monday October 23, 2017 7:13 PM CDT (00:13 UTC) Moonrise 10:27AMMoonset 9:14PM Illumination 15% Phase: Waxing Crescent; Moon at 4 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- 316 Pm Cdt Mon Oct 23 2017
.small craft exercise caution in effect through Tuesday morning...
.small craft advisory in effect from Tuesday morning through late Tuesday night...
Tonight..Northwest winds 10 to 15 knots increasing to 15 to 20 knots overnight. Waves 1 to 2 feet. Dominant period 4 seconds.
Tuesday..Northwest winds 15 to 20 knots with frequent higher gusts. Waves 3 to 5 feet. Dominant period 4 seconds.
Tuesday night..Northwest winds 15 to 20 knots with frequent higher gusts. Waves 2 to 4 feet. Dominant period 4 seconds.
Wednesday..Northwest winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds.
Wednesday night..North winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Thursday..North winds near 5 knots becoming northeast late in the morning, then becoming south in the afternoon. Waves 1 foot or less. Dominant period 4 seconds.
Thursday night..South winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds.
Friday..South winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds.
Friday night..South winds 5 to 10 knots becoming north 10 to 15 knots in the late evening. Waves 1 to 2 feet. Dominant period 4 seconds. Chance of showers and Thunderstorms.
Saturday..North winds 10 to 15 knots. Waves 2 to 4 feet. Chance of showers and Thunderstorms.
Saturday night..North winds 15 to 20 knots. Waves 3 to 5 feet. Slight chance of showers and Thunderstorms.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 316 Pm Cdt Mon Oct 23 2017
Synopsis..A cold front will continue to push south of the coastal waters and into the central gulf of mexico today. A secondary cold front will move through the coastal waters late tonight and early Tuesday. High pressure will settle over the area during the middle of the week and shift to the east Thursday into Friday. Another cold front will move through the region Friday night into Saturday.

7 Day Forecast for Marine Location Near West Hattiesburg, MS
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location: 31.29, -89.51     debug


Area Discussion for - Jackson, MS
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Fxus64 kjan 232322 aaa
afdjan
area forecast discussion... Updated
national weather service jackson ms
622 pm cdt Mon oct 23 2017

Update
Updated for 00z aviation discussion

Aviation
00z TAF discussion:
vfr conds wl prevail through Tuesday night. A dry cold front wl
move across the region tonight and result in sustained NW winds of
12-15kts with gusts of 18-24kts during the day Tuesday. 22

Discussion
Tonight through Tuesday: overall a much drier & cooler night is
in store as much drier pw air will be present over the region. By
this evening, expect the previously mentioned longwave trough to
have absorbed & phased with the closed upper low in the upper
great lakes. This will help the strong surface low to occlude over
the great lakes & deep troughing & vorticity advection to amplify
the longwave trough. As the strong surface low occludes, it will
help drive down the strong cold front tonight. Expect the cold
front to be moving down into the delta late tonight between 10pm
to 1am & through most of the area by around 4- 6am. This will help
turn winds more northwesterly & drive down much drier air into
the region. Dewpoints will being to to fall into the 30s by early
morning Tuesday. Due to some winds around, expect lows to fall to
near normal, into the mid-upper 40s or so, especially across the
northern areas.

Expect cooler & drier air to continue to filter in on Tuesday,
bringing much drier air & lower dewpoints into the area. As the
trough amplifies & cold front pushes pws less than an half an inch &
low level dry air into the area, expect dewpoints to fall into the
low-mid 30% range. In addition, as strong surface ridging (~1026-
1028mb surface high) builds into western texas, our area will be
under strong pressure gradient across the entire arklamiss region
(~3mb pressure gradient). This will lead to gusty sustained winds,
beginning in the mid-morning & continuing into the afternoon. These
winds could gust as high as 30-35mph, mainly along and west of the i-
55 corridor but especially into the arklamiss delta. Continued the
limited risk for gusty winds in the hwo graphics as we could
potentially reach a little higher with such strong pressure gradient
& associated winds & extremely favorable mixing environment. We also
should warm efficiently due to dry ground & low dewpoints, but still
some 5-8 degrees below normals into the upper 60s-low 70s.

In addition, increasing fire danger will be possible across the
western area due to such strong sustained winds & near critical
relative humidity values approaching the 25-30% range. Due to some
recent rainfall over southern areas & strongest sustained winds
being confined to the delta, kept only a limited risk for the fire
danger in the hwo graphics for west of the i-55 corridor. Also some
of the recent soil moisture & rainfall & dry delta soils should
limit the potential & not as much into the timber land further east.

Dc
Tuesday night through Sunday: surface high pressure, centered
over tx, will continue to build into the area at the beginning of
the period. Though the atmosphere will want to decouple due to the
better radiation in the drier air, the surface pressure gradient
looks to remain at least tight enough to keep winds up Tuesday
night keeping temps from falling to their lowest potential and
inhibiting any frost development. Some frost does look possible by
Thursday morning as high pressure center moves over southeast
ms southwest al with surface temps dropping down into the mid 30s
over the southeast. Flow around the high will bring southwesterly
winds to the rest of the area resulting in warmer mins.

Another strong cold front upper level system will move through the
area Friday into Friday night. Not much time for moisture recovery
ahead of this system, thus only expecting a few showers with the
frontal passage. The bigger story will be the cool dry airmass that
will build in Saturday. A strong cooling potential will exist by
Saturday night as the pressure gradient relaxes. Dewpoints in the
teens late in the day will allow for rapid decoupling and strong
radiative heat loss during the evening. Freezing temperatures look
possible by early Sunday morning over at least north-central
portions with mid 30s and widespread frost elsewhere. 26

Preliminary point temps pops
Jackson 48 71 39 65 0 0 0 1
meridian 48 69 39 64 0 0 0 1
vicksburg 48 71 40 66 0 0 0 1
hattiesburg 50 69 41 65 0 0 0 1
natchez 48 70 40 65 0 0 0 0
greenville 48 69 39 66 0 0 0 0
greenwood 46 69 38 64 0 0 0 1

Jan watches warnings advisories
Ms... None.

La... None.

Ar... None.

22 dc 26


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
OSTF1 - Stennis Test Facility 65 mi83 min NNW 3.9 G 7.8 69°F 1016.1 hPa (-0.0)48°F
WYCM6 - 8747437 - Bay Waveland Yacht Club, MS 67 mi43 min NNW 8 G 9.9 69°F 73°F1016 hPa

Wind History for Bay Waveland Yacht Club, MS
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hattiesburg, Bobby L Chain Municipal Airport, MS14 mi80 minNW 610.00 miFair67°F46°F49%1016.2 hPa
Hattiesburg/Laurel, Hattiesburg-Laurel Regional Airport, MS16 mi77 minN 010.00 miFair64°F48°F56%1016.6 hPa

Wind History from HBG (wind in knots)
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Last 24hrSE5S3W6NW8NW4W5W3W3NW7NW5W7NW106NW12NW15
G21
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NW6NW6Calm
1 day agoSE6SE5CalmCalmNE3CalmCalmCalmCalmCalmCalmCalmSW334E6E9SE6N4NW33NW4E4SE8
2 days agoCalmCalmCalmCalmCalmCalmCalmCalmNW4CalmCalmCalmCalmSE4E5E8E8SE9SE11E9E7E5SE6Calm

Tide / Current Tables for Turkey Creek, Bernard Bayou, Mississippi
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Turkey Creek
Click for Map
Mon -- 01:39 AM CDT     2.59 feet High Tide
Mon -- 07:04 AM CDT     Sunrise
Mon -- 10:23 AM CDT     Moonrise
Mon -- 11:34 AM CDT     0.72 feet Low Tide
Mon -- 06:16 PM CDT     Sunset
Mon -- 09:13 PM CDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.52.62.62.52.32.11.81.51.210.80.70.70.80.811.11.21.41.61.822.22.3

Tide / Current Tables for Wolf River, Henderson Avenue bridge, Mississippi
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Wolf River
Click for Map
Mon -- 01:34 AM CDT     2.29 feet High Tide
Mon -- 07:05 AM CDT     Sunrise
Mon -- 10:23 AM CDT     Moonrise
Mon -- 11:58 AM CDT     0.64 feet Low Tide
Mon -- 06:17 PM CDT     Sunset
Mon -- 09:14 PM CDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.22.32.32.22.11.91.61.41.10.90.80.70.60.70.70.80.91.11.21.41.51.71.92.1

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 Jackson, MS (20,4,5,8)
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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.