Friday, March24, 2017 L-36.com


Marine Weather and Tides
Canton, 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 6:56AMSunset 7:16PM Friday March 24, 2017 6:52 PM CDT (23:52 UTC) Moonrise 4:44AMMoonset 3:54PM Illumination 7% Phase: Waning Crescent; Moon at 27 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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7 Day Forecast for Marine Location Near Canton, MS
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location: 32.5, -89.95     debug


Area Discussion for - Jackson, MS
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Fxus64 kjan 242322
afdjan
area forecast discussion
national weather service jackson ms
622 pm cdt Fri mar 24 2017

Update
Updated for 00z aviation discussion

Aviation
00z TAF discussion:
vfr conditions will continue through the evening. MVFR ceilings
will increase from west to east through the evening in association
with the tsra moving in. Seems these lowered ceilings could arrive
at kglh/kgwo by 02-04z, the after 06z in the hks/jan area and
eventually east to gtr/mei/hbg before daybreak. While MVFR
conditions will be prevalent early Saturday, there will be some
improvement with areas ofVFR during the late morning/afternoon
outside of tsra. Line of showers and storms will move into the
region closer to 04-06z and track east, likely diminishing as it
does. Gusty southerly winds will occur just ahead of these storms
and along the line. Additional storms may redevelop tomorrow
afternoon, mainly affecting kgtr/kmei/khbg(possibly kjan). /28/

Discussion
Tonight through Saturday,
strong mixing is resulting in gusty southerly winds and enough
destabilization occurred today to support a few showers in the
capped airmass. Forecast thinking is generally the same concerning
the severe weather potential for late tonight and again Saturday. A
quasi linear convective system (qlcs) will develop over the arklatex
region and move into western portions of the arklamiss around
midnight and east of the ms river during the predawn hours. With 0-3
km southwesterly shear vectors in the 40-50 kt range and somewhat
orthogonal to the roughly north-south oriented qlcs, there is still
a potential for mesovortices producing tornadoes and damaging wind
gusts. This threat seems greatest over the delta region with a
diminishing threat toward daybreak along the i-55 corridor.

As we go into Saturday, the initial squall line should dissipate
early in the morning as it moves away from better support and into a
stout mid level ridge centered over the southeast conus. Additional
cyclonic vorticity advection and upstream destabilization will help
to produce another round of organized storms from late morning
through the afternoon. Low level shear will not be as strong, but
will monitor the potential for a tornado given 0-1km shear vectors
near the 20kt threshold and perhaps better orientation of 0-3 km
shear vectors. Otherwise, damaging wind gusts/hail are expected to
be the main concerns with steep mid level lapse rates (vt
approaching 30) producing mixed layer CAPE > 1000 j/kg. The greater
threat for severe weather Saturday is expected along/east of the i-
55 corridor in contrast to tonight. /ec/
tomorrow night and Sunday
expecting much of the severe to be over shortly after sunset with
a few showers lingering in the east through midnight. The latest
nam suggests there may be some isolated convection through Sunday
afternoon. The arw is a little slower than the GFS but still
shows the rain moving out. Will leave the area dry at this point
for Sunday.

Sunday night through Tuesday
round two of severe approaches late Sunday night. It
looks like there may be some storms approaching the river by 12z
Monday. Instability is on the rise at that time, but seems to
peak after 15z. The entire area has been changed to a slight risk
of severe Monday. The latest runs show some difference in the
speed of the system and severe could get started early. Forecast
soundings did not show much 0-6 km sheer, but the wind profile
looks good. Could see conditions similar to today with gradient
winds around 30, 40kts at 850 and around 50kt at 500. The surface
low with the system on Monday tracks northeast across the
arkansas, so for now areas north of i20 and west of i55 may see
some of the bigger hail. Lapse rates support significant hail
sizes, so values much larger than quarters are likely. The
position of the upper jet may be lined up with the surface low as
it passes through the delta Monday morning, so the potential for
good updrafts and large hail will be there. Conditions continue to
support severe storms. Storms move out Monday evening, but models
suggest the tail end of the boundary stalls along the coast.

While it looks the area will be dry for Tuesday, a few showers
can not be totally ruled out at the warm front drifts north
through the day.

Wednesday through Saturday
while this is nearly a week away, the potential for for round 3
of severe storms exists for late Wednesday through Thursday of
next week. A closed upper low and deepening surface low move
through the delta again. The upper trough will be pretty far
south, tapping some much warmer air and good moisture from the
gulf. The system is worth watching. Warmer than normal conditions
will continue through the week.

Preliminary point temps/pops
Jackson 65 75 59 81 / 80 74 42 8
meridian 62 75 60 81 / 24 77 55 9
vicksburg 65 77 58 81 / 84 72 16 4
hattiesburg 65 77 62 82 / 28 77 39 9
natchez 64 77 59 82 / 82 68 23 6
greenville 63 75 55 78 / 90 66 9 3
greenwood 64 74 58 79 / 82 73 23 5

Jan watches/warnings/advisories
Ms... None.

La... None.

Ar... None.

28


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Jackson, Jackson International Airport, MS14 mi59 minS 16 G 319.00 miLight Rain74°F61°F64%1018.1 hPa
Jackson, Hawkins Field Airport, MS19 mi60 minSSE 22 G 3510.00 miA Few Clouds and Breezy77°F57°F52%1017.7 hPa

Wind History from JAN (wind in knots)
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Last 24hrSE8SE7SE7S9S10SE14SE15
G22
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G19
SE10SE9SE10SE13
G19
S14SE14S19
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G27
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G27
SE14
G23
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G25
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G22
S18
G23
S17
G27
S19
G24
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G31
1 day agoN5N3NE7NE6NE6CalmNE3CalmCalmCalmCalmCalmCalmCalmSE5SE8SE8S5S7
G16
S10
G17
SE11
G16
S7S10SE9
2 days agoSW5E3CalmSE3CalmCalmSW4SW5SW5SW3W5SW3CalmCalmN7N9N10N5NW6CalmN3N11
G15
N9N4

Tide / Current Tables for
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Tide / Current Tables for
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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 (19,4,5,8)
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Ground Weather Radar Station Jackson/Brandon, MS
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weather_mapweather_map weather_map

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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.