Thursday, July19, 2018

Marine Weather and Tides
Pelahatchie, MS

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 6:05AMSunset 8:07PM Thursday July 19, 2018 1:06 AM CDT (06:06 UTC) Moonrise 1:08PMMoonset 12:22AM Illumination 37% Phase: Waxing Crescent; Moon at 6 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 190541 aab
area forecast discussion... Updated
national weather service jackson ms
1241 am cdt Thu jul 19 2018

Updated for 06z aviation discussion

06z TAF discussion:
vfr flight categories are expected to prevail through much of the
overnight hours as mid and high clouds stream southeast across the
area. However, with some eroding of both nid and high decks
expected overnight, some patchy low stratus is expected to develop
across the region, in addition to some patchy fog towards day
break. Both could result in a reduction of ceilings and or
visibilities to MVFR ifr status for a brief period this morning,
before improving toVFR categories through the mid and late
morning hours. Convection is yet again expected to develop through
the course of the afternoon hours, mainly east of the interstate
55 corridor, kgtr, kmei, and khbg. Gusty winds, frequent
lightning, and torrential downpours can be expected with any of
today's storms. This will again cause a reduction of ceilings and
visibilities to MVFR ifr status if convection is observed within a
site's respected aerodrome. Activity will again begin to
gradually dissipate after sunset this evening. 19

Local radar showed most of this evening's convection dissipating
over southeast mississippi. This trend will continue but an
isolated thunderstorm will move to the west back over southeast
noxubee and northeast lauderdale counties before dissipating
before midnight. Regional radars showed a narrow band of light
showers across our delta region and stretching back very near
interstate 20 into east texas. This activity is expected to
drift southeast into the central portions of our CWA before
dissipating well after midnight. Have adjusted pops remainder of
the night based on latest radar trends and adjusted temperatures
due to rain cooled areas. 22
prior discussion below:
tonight and Thursday: convection this afternoon continues to fire
in axis of high 0-3km theta-e over mainly western portions of the
area. This will continue into early evening and gradually
diminish with the loss of heating. Emphasis will then turn to the
extreme heat potential beginning Thursday. Models indicate that
mid level ridge will nose into the area from the west tomorrow. As
it does so, significant drying in the low to mid levels will
limit convective potential and allow for more efficient warming.

Relative moist soils from recent rainfalls across the area will
keep surface dewpoints from dropping below the low to mid 70s.

Mid upper 90s heat with these dewpoints will send heat indices
from 105 to 110 mostly along and west of interstate 55. Have
issued a heat advisory for this area, accordingly. 26
Friday through next week: the overall continental weather pattern
has the typical summertime ridge in the western u.S. And a trough
in the eastern u.S. The eastern nose of the ridge nudges into the
arklamiss region on Friday. With anomalous heights over the area,
temperatures will have the capability of warming to above normal
values. High temperatures in the upper 90s will occur on Friday
with the far western reaches of the CWA possibly hitting 100. With
temperatures this high and dewpoints not budging in the mid 70s,
heat indices will range from 105-113. Heat stress will be a big
issue on Friday and the threat will continue into the weekend,
although Friday appears to be the hottest day at this time. While
the hwo graphicast shows significant heat through Sunday, the
areal coverage for significant heat will most likely change
(shrink) going into Saturday and again on Sunday. Back to Friday,
a shortwave in the northwest flow aloft will trigger some storms
in the mid-mississippi valley. An mcs-type system could form and
move southward into the CWA by Friday night. Some of the storms
with this systems could be marginally severe after looking at
severe parameters. Will need to keep an eye on this in future
forecast updates.

A cutoff low dropping south along the appalachians will bring
scattered rain chances on our eastern periphery this weekend. These
storms will help to keep the heat stress at bay in those areas. As
the low drops further south over the southeast, high temperatures
will drop back closer to normal values for next week. Rain chances
will increase back to typical summertime values as well. 10

Preliminary point temps pops
Jackson 75 97 77 97 12 10 12 19
meridian 75 97 77 97 19 22 17 36
vicksburg 76 98 77 98 2 8 6 7
hattiesburg 75 96 76 96 24 15 3 21
natchez 76 96 76 97 3 7 2 7
greenville 76 97 77 96 8 8 17 9
greenwood 76 96 76 94 10 16 29 12

Jan watches warnings advisories
Ms... Heat advisory from 10 am this morning to 7 pm cdt this evening
for msz018-019-025>027-034>036-040>043-047>049-053>055-

La... Heat advisory from 10 am this morning to 7 pm cdt this evening
for laz007>009-015-016-023>026.

Ar... Heat advisory from 10 am this morning to 7 pm cdt this evening
for arz074-075.


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Jackson, Jackson International Airport, MS12 mi72 minN 010.00 miFair75°F73°F96%1013.3 hPa
Jackson, Hawkins Field Airport, MS19 mi73 minN 010.00 miFair75°F75°F100%1013 hPa

Wind History from JAN (wind in knots)
Last 24hrCalmSW3CalmCalmSE4S5SW5SW3S3CalmW3SW5CalmW9N4NW13
1 day agoCalmS5S5S4CalmCalmE3E3CalmSW11SW7SW8W7W7W8W7NW5W3SW4SW5SW4CalmCalmS3
2 days agoSE3S3S3S4S4S3SW3W4W5W8W8NW9SE4S5S9SE14

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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GOES Local Image of    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Jackson, MS (2,6,7,8)
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Ground Weather Radar Station Jackson/Brandon, MS
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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 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 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.