Thursday, January18, 2018 L-36.com


Marine Weather and Tides
Seminary, 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 6:54AMSunset 5:21PM Thursday January 18, 2018 7:39 AM CST (13:39 UTC) Moonrise 8:57AMMoonset 7:57PM Illumination 3% 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- 353 Am Cst Thu Jan 18 2018
Today..North winds 10 to 15 knots. Waves 2 to 3 feet. Dominant period 4 seconds.
Tonight..Northeast winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds.
Friday..Northeast winds 5 to 10 knots becoming southeast in the afternoon. Waves 1 foot or less. Dominant period 4 seconds.
Friday night..East winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds.
Saturday..Southeast winds 10 to 15 knots. Waves 2 to 3 feet. Dominant period 4 seconds.
Saturday night..Southeast winds 10 to 15 knots. Waves 2 to 3 feet. Dominant period 4 seconds.
Sunday..Southeast winds 10 to 15 knots. Waves 2 to 3 feet. Dominant period 4 seconds. Slight chance of showers.
Sunday night..South winds 10 to 15 knots. Waves 2 to 3 feet. Dominant period 4 seconds. Chance of showers.
Monday..Southwest winds 10 to 15 knots becoming west late in the afternoon. Waves 2 to 3 feet. Dominant period 4 seconds. Showers likely.
Monday night..North winds 10 to 15 knots. Waves 2 to 3 feet.
GMZ500 Synopsis Pascagoula To Sw Pass Mississippi- Synopsis Sw Pass Mississippi River To Atchafalaya River- 353 Am Cst Thu Jan 18 2018
Synopsis..Cold high pressure building into the central gulf coast will shift to the east Friday. A cold front will move through the area Monday.

7 Day Forecast for Marine Location Near Seminary, MS
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location: 31.5, -89.56     debug


Area Discussion for - Jackson, MS
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Fxus64 kjan 181146 aaa
afdjan
area forecast discussion... Updated
national weather service jackson ms
546 am cst Thu jan 18 2018

Slow warming trend begins after a frigid start to the day...

Update
Updated for 12z aviation discussion

Aviation
12z TAF discussion:
vfr conditions are expected through the next 24 hours with light
winds transitioning to more westerly through the period. Expect a
few to scattered clouds around 5 to 10 kft late tonight through
Friday morning. Bb

Discussion
Today and tonight:
modifying arctic high pressure in the atmospheric low levels is
sitting right atop the lower mississippi valley early this morning
and promoting light winds and associated good radiational cooling
conditions given clear skies. The previous forecasts of lows this
morning ranging from 10 to 15 are basically on track with isolated
spots along and north of i-20 probably dipping just down below 10
degrees by sunrise. Records lows are reachable at gwo and hbg and
a new record of at least down to 11 has already been set at tvr.

We will likely send official updates on records later this
morning.

For today, the cold air mass will be starting to slowly weaken its
hold on the region with warming temperatures aloft allowing for a
much quicker (in comparison to yesterday) warmup after sunrise.

Full Sun and light winds will yield decent mixing and nearly all
areas, aside from maybe portions of the arklamiss delta, will get
above freezing by noon. But even spots in the arklamiss delta
should manage to top out at least several degrees above freezing
by the afternoon. We inherited a hard freeze warning expiring at
noon and will stick with that given expectations allowing for good
area-wide thawing by that time (or very shortly thereafter).

Even though the modifying high pressure center will be starting to
the shift to the east tonight the air mass will remain very dry
and winds light, again promoting good radiational cooling. There
will probably be some scattered low to mid layer clouds
approaching from the southwest late at night, but not quickly
enough to ward off maximum theoretical cooling in most areas. Lows
were dropped a bit in comparison to the previous forecast in many
spots with upper teens likely at least across a big chunk of
eastern ms. Despite these relatively cold low temperatures we will
refrain from issuing another hard freeze warning considering
because the warming daytime highs do not meet one of two-prong
threshold criteria. Bb
Friday through next Wednesday... Warmer and overall quiet conditions
currently look to persist Friday and into the upcoming weekend.

Highs during this time will steadily climb from the upper 40s and
middle 50s of Friday, and into the low and upper 60s come Sunday.

Lows meanwhile will also follow suit as they climb from the upper
20s to upper 30s Saturday morning, into the lower 40s and around 50
early Sunday morning.

Increasing warm advection and moisture Saturday into Sunday, will
result in increasing clouds during the weekend. While some mainly
light warm advection-type showers are possible west of the
mississippi river by Sunday afternoon, rain chances areawide will
significantly increase from west to east across the forecast area
Sunday evening through Monday morning. This will be as a result of
a cold front racing west to east through the CWA during this time.

It continues to look like there will be some potential for
thunderstorm activity with this front, primarily along it. While
deep wind shear continues to look adequate with the system,
instability remains too meager at the moment to have enough
confidence in any of these storms being severe. This is still
several days out, and will continue to be monitored.

The cold front and associated rainfall looks to exit the region
through the course of the afternoon Monday. High pressure will
quickly build into the CWA in its wake. This will result in clearing
skies late Monday and into Tuesday. Highs both days will generally
range from the mid 50s to mid 60s. Lows currently look to range in
the low to upper 30s both Monday and Tuesday mornings. Quiet
weather continues on Wednesday, with some mid and high clouds
increasing a bit over the region, and slightly cooler afternoon
temperatures. 19

Preliminary point temps pops
Jackson 42 21 52 34 0 0 0 0
meridian 43 20 51 29 0 0 0 0
vicksburg 41 21 51 36 0 0 0 0
hattiesburg 44 20 53 32 0 0 0 0
natchez 42 22 52 38 0 0 0 4
greenville 37 21 47 36 0 0 0 0
greenwood 40 20 49 35 0 0 0 0

Jan watches warnings advisories
Ms... Hard freeze warning until noon cst today for msz018-019-025>066-
072>074.

La... Hard freeze warning until noon cst today for laz007>009-015-016-
023>026.

Ar... Hard freeze warning until noon cst today for arz074-075.

19 bb


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WYCM6 - 8747437 - Bay Waveland Yacht Club, MS 82 mi57 min N 12 G 14 21°F 40°F1034.5 hPa

Wind History for Bay Waveland Yacht Club, MS
(wind in knots)    EDIT      (on/off)   Help
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N16
G21
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G25
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N16
N13
G17
N14
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G14
N7
G12
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1 day
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N2
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G15
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G23
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G24
N18
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N11
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G18
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G22
N14
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G21
2 days
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NE5
E4
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S7
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SE2
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N2
NE1
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N1
N2
NW2
E2
S2
N4
N1
SE2
NE2

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hattiesburg/Laurel, Hattiesburg-Laurel Regional Airport, MS12 mi43 minNNW 410.00 miFair12°F10°F92%1036 hPa
Hattiesburg, Bobby L Chain Municipal Airport, MS23 mi46 minN 010.00 miFair16°F12°F88%1035.8 hPa

Wind History from PIB (wind in knots)
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Last 24hrN11
G15
N14
G19
N12--N14
G20
N13N13N9N13N13NW5N4NW5NW4N6NW4NW4N4N4N5N6W3CalmN4
1 day agoN13N14
G21
N13
G17
N11N11NW10
G17
N9
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N10N12N11
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N11N7NW8
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N7NW9NW9NW7
G17
N7N8N7N6N6
2 days agoCalmCalmSE6S5CalmSE4Calm--E3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmS3NW8N8N11
G18

Tide / Current Tables for Turkey Creek, Bernard Bayou, Mississippi
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Turkey Creek
Click for Map
Thu -- 06:53 AM CST     Sunrise
Thu -- 07:53 AM CST     Moonrise
Thu -- 09:35 AM CST     -0.89 feet Low Tide
Thu -- 05:20 PM CST     Sunset
Thu -- 06:56 PM CST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.41.31.10.80.50.1-0.3-0.6-0.8-0.9-0.9-0.8-0.7-0.6-0.4-0.3-0.10.10.30.50.70.91.11.2

Tide / Current Tables for Wolf River, Henderson Avenue bridge, Mississippi
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Wolf River
Click for Map
Thu -- 06:53 AM CST     Sunrise
Thu -- 07:53 AM CST     Moonrise
Thu -- 09:59 AM CST     -0.79 feet Low Tide
Thu -- 05:21 PM CST     Sunset
Thu -- 06:57 PM CST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.21.110.70.40.1-0.2-0.4-0.6-0.7-0.8-0.8-0.7-0.6-0.4-0.3-0.100.20.40.60.80.91.1

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 (8,2,3,4)
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Ground Weather Radar Station Jackson/Brandon, MS
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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.