Thursday, August24, 2017 L-36.com


Marine Weather and Tides
Pelahatchie, 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 6:29AMSunset 7:34PM Thursday August 24, 2017 5:22 AM CDT (10:22 UTC) Moonrise 9:19AMMoonset 9:38PM Illumination 5% 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 240912
afdjan
area forecast discussion
national weather service jackson ms
412 am cdt Thu aug 24 2017

Discussion
Today & tonight:
at the surface this morning the cold front has moved through to
south of the i-20 corridor but stalled off to our south. Some
patchy fog can't be ruled out this morning due to heavier
downpours yesterday evening. Synoptically our area is situated on
the eastern fringe of the upper ridge over the great basin &
desert southwest & into the southern plains. In the wake of the
front, strong surface ridging & some drier air is filtering in.

Goes-16 (prelim & non- operational) indicates pws falling to near
an inch to inch and a half in northern mississippi with slower
drop off in moisture further south. At the surface, dewpoints in
the upper 60s are slowly filtering into the highway 82 corridor.

Expect these low- mid 60s dewpoints to filter in from the north-
northeast, potentially down into the i-20 corridor. Better
moisture, near 2 inch pws, will reside near the stalled cold front
in the south. Global model consensus & cam guidance want to hit
more on rain & storm chances in the highway 84 corridor &
especially in the southwest, where better moisture convergence &
transport reside. Due to high moisture & stalled frontal boundary,
expect rain & storm chances to be confined to that area today.

Couldn't rule out some heavy downpours & an isolated strong storm
or two but there seems to be enough flow (corfidi vectors around
10-15kts) & weak lapse rates & vertical totals to preclude
mentioning anything in the hwo & graphics. Thermal profiles in
the wake of the front will only have only cooled a degree or two
at 850mb & 925mb, so expect warm but pleasant conditions in the
delta & highway 82 corridor, with slightly more humid conditions
further south. Highs should top out below normal in the mid-upper
80s in the delta & highway 82 corridor with near normal highs near
90 degrees along & south of i-20.

Expect these storms to slowly wind down overnight. As was the case
as this morning, expect these storms to be slow to dissipate due
to high moisture & stalled frontal boundary. They should dissipate
by around 06z Friday but could linger a few hours later. As harvey
moves across the central gulf towards landfall somewhere along the
texas coastline by early Friday morning, expect the cold front to
slowly drift south through the night. This will help strong ridging
& best surge of drier air to filter in the north-northeastern
portions of the area. Moisture will fall to around or less than an
inch pws in the highway 82 corridor & golden triangle to only
around an inch & a half from greenville to around meridian. Clouds
will clear along & north of this line. Due to this, pleasant
conditions will exist Friday morning with lows falling to ~5
degrees below normal, in the low-mid 60s, with upper 60s to low
70s in the south. Dc
Friday through Wednesday:
cooler than normal temperatures with gradually increasing rain
chances from the southwest are expected through the period. Come
Friday morning surface high pressure will be centered north of our
cwa with a cold front stalled across our southwest most zones.

Much of our CWA will remain dry but a slight chance of rain wl be
carried across our southwest during the afternoon due to the
stalled front. Further to our southwest harvey is expected to be
impacting southern texas Friday. Compared to previous runs, model
consensus is slower in bringing any significant rain amounts
associated with harvey to our cwa. The GFS and ECMWF bring harvey
over the lower mississippi river valley by the middle of next
week. Wl continue to highlight the heavy rain and flooding
potential in our hwo for Wednesday. Until then, the dry airmass
over the northeast two thirds of our CWA Saturday will slowly
moisten into Sunday as the large surface high slides slowly to the
east. A shortwave will drop south over the upper mississippi
valley Monday and close off a low over the western great lakes
region Monday night. This low will swing east across the ohio
valley Tuesday into Wednesday and help send a weak cold front into
northern mississippi Tuesday. This front is expected to stall
just north of our CWA Tuesday night as harvey draws closer to our
cwa from the southwest. Together these features are expected to
bring an increase in heavy rainfall going into Wednesday. 22

Aviation
06z TAF discussion:
some scattered showers & a few isolated storms will linger through
the next hour or so (24 07-08z) before mostly dissipating but
couldn't rule out some lingering slightly longer. Overall most taf
sites, especially in the north in the wake of the cold front, will
remainVFR overnight, but there could be some patchy fog & MVFR
visibilities. This will be the case in areas that received heavier
rainfall, especially near tvr, hks, jan, pib & hbg. These lower
visibilities may be earlier near hks & jan due to lingering rain &
higher moisture, possibly closer to 24 08z, while closer to
daybreak, towards pib & hbg, around 24 11z. MVFR conditions will
lift around daybreak into mid-morning around 24 13z. Winds will
remain mainly out of the northeast overnight & into tomorrow
around 6-8kts as the cold front moves through. Some more scattered
showers & storms can't be ruled out tomorrow afternoon around hbg
after 24 18z. Dc

Preliminary point temps pops
Jackson 89 68 88 71 12 8 6 23
meridian 90 65 89 71 10 4 5 20
vicksburg 89 69 88 72 14 8 7 25
hattiesburg 91 71 90 72 27 13 13 26
natchez 87 71 87 72 33 21 23 33
greenville 87 67 87 70 5 4 4 9
greenwood 88 65 88 69 4 3 3 8

Jan watches warnings advisories
Ms... None.

La... None.

Ar... None.

Dc 22


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Jackson, Jackson International Airport, MS12 mi88 minENE 310.00 miA Few Clouds75°F73°F96%1012.8 hPa
Jackson, Hawkins Field Airport, MS19 mi29 minNNE 38.00 miFair75°F75°F100%1013 hPa

Wind History from JAN (wind in knots)
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Last 24hrCalmCalmCalmW4Calm4NE6N7N9N9N9N6N5NE4NE6SW8E4W3S45N4NW3NE3NE7
1 day agoCalmCalmS3S3SW4CalmS3W454S6SW6SW4S5S5S4CalmSW4CalmS4S4S5CalmCalm
2 days agoCalmCalmCalmCalm3CalmE6NE5E4E4E3NE5E4E3CalmS3S9S5S3CalmSE3CalmCalmCalm

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
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GOES Local Image of Southeast    EDIT
Geos

Wind Forecast for Jackson, MS (6,6,7,8)
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Ground Weather Radar Station Jackson/Brandon, MS
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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.