Thursday, April27, 2017 L-36.com


Marine Weather and Tides
Pelahatchie, 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 7:39PM Thursday April 27, 2017 1:39 PM CDT (18:39 UTC) Moonrise 7:25AMMoonset 9:11PM 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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7 Day Forecast for Marine Location Near Pelahatchie, MS
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location: 32.38, -89.86     debug


Area Discussion for - Jackson, MS
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Fxus64 kjan 271506
afdjan
area forecast discussion
national weather service jackson ms
1006 am cdt Thu apr 27 2017

Update
Updated for morning discussion.

Discussion
Mostly cloudy skies prevail over the bulk of the area this
morning, but skies are beginning to clear in the west. Expect the
skies to become partly cloudy over the remainder of the area
through the morning into the afternoon hours, as drier air and
surface high pressure ridging builds in. A nice day looks on tap
with highs ranging from the low 70s in the north to near 80 in the
south. Made a few minor updates to the forecast, but for the most
part it is on track./15/
prior discussion below:
surface analysis had a 993mb low over northern illinois with the
trailing cold front across the central portions of our cwa. A weak
1009mb high was also noted over east texas. The cold front will
shift east of our CWA by sunrise and end the low chances of rain
over east mississippi. Dry weather is expected through tonight. The
weak surface high will become centered over our CWA this afternoon
and shift northeast of mississippi tonight. As the surface high
moves over our area today the clouds will clear out. Satellite
imagery shows the back edge of the cloud cover nearing our western
zones already. Despite decent insolation today, temperatures will
top out cooler than normal at most locations. The cold front moving
through our CWA this morning will stall near the gulf coast this
afternoon then return north as a warm front after midnight tonight.

This will be in response to another deepening surface low to our
west. Model consensus has the warm front near the interstate 20
corridor by sunrise but rain chances look to hold off until during
the day. /22/
Friday through Wednesday night: the next upper-level low pressure
system will be digging the four corners region on Friday into
Saturday, leading to the next stretch of impactful weather for our
forecast area. As the upper low digs southward, a pair of surface
lows will develop over north texas and lift northeastward. The
first low will lift a warm front through the area Friday, with
increasingly hot and humid air moving into the arklamiss. Dewpoint
temps in the low 70s will surge northward into our area during
the day while air temperatures climb to near 90 degrees. This
moist atmosphere should remain capped thanks to subsidence aloft,
but an isolated shower or storm can't be ruled out somewhere
around the area. Breezy southerly winds can be expected, but do
not currently think sustained winds will reach advisory speeds.

The second surface low develops on Saturday and will be slower to
lift northward, allowing for a stronger pressure gradient to
develop across our area. A wind advisory may be needed on
Saturday, especially in the delta where sustained winds around 25
mph could occur.

Then attention quickly shifts to an increasing potential for severe
weather and heavy rainfall ahead of the approaching storm system. A
cold front moving into the region late Saturday night through the
day on Sunday will serve as the primary focus for thunderstorm
development, but a few thunderstorms can't be ruled out late in the
day on Saturday. The chance for severe thunderstorms increases
on Sunday as the upper low edges closer and a more favorable wind
profile develops. Forecast pwat values near or above 2.0 inches are
above the climatological maximum for this time of year, indicating
that thunderstorms will be very efficient rain makers. Will continue
a mention of flash flooding potential in our graphical and text
hazardous weather outlook products. Models remain in fairly decent
agreement on the timing for the front to move through our area, with
a general consensus for heavy rain to be exiting far eastern
mississippi by late Sunday evening. Details are still less certain
regarding the next threat for severe weather, but an upper-level
trough passage next Wednesday or Thursday could usher another round
of thunderstorms through the region. /nf/

Aviation
12z TAF discussion:
MVFR/ifr CIGS over the area at 11z will gradually clear from the
west this morning.VFR conditions are expected areawide by 16z
andVFR conditions will prevail through 09z tonight. After 09z
MVFR CIGS are expected to spread north over the southern half of
the area. /22/

Preliminary point temps/pops
Jackson 77 64 88 71 / 0 3 17 8
meridian 80 61 87 70 / 1 3 17 8
vicksburg 75 61 87 71 / 0 3 15 8
hattiesburg 83 65 87 70 / 2 9 20 8
natchez 77 64 88 72 / 0 4 17 8
greenville 73 59 86 71 / 0 3 20 21
greenwood 74 59 88 71 / 0 3 16 15

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

La... None.

Ar... None.

15


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Jackson, Jackson International Airport, MS12 mi45 minWNW 510.00 miOvercast61°F54°F78%1011.6 hPa
Jackson, Hawkins Field Airport, MS19 mi46 minN 010.00 miOvercast60°F53°F78%1011.2 hPa

Wind History from JAN (wind in knots)
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Last 24hrSE15S13SE18
G26
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S6S5S4S5SW5NW9W9W7W6W8W5NW5NW53NW5
1 day agoS12
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G19
S15S10S7S8S10S12S10S10S10S9S9S6SE8S6SE10S11SE13S11S14S16
G23
2 days agoN10NW10N9N8N6N5CalmSE3CalmCalmCalmSE5CalmCalmCalmCalmS3SW3S4SW4SW5SW8
G15
SW8
G19
S6
G15

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
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IR Satellite Image from GEOS
east_satellite

GOES Local Image of Southeast    EDIT
Geos

Wind Forecast for Jackson, MS (14,3,4,5)
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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.