Monday, May20, 2019

Marine Weather and Tides
South Point, TX

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 5:16AMSunset 5:58PM Monday May 20, 2019 8:24 AM CST (14:24 UTC) Moonrise 8:43PMMoonset 7:36AM Illumination 98% Phase: Waning Gibbous; Moon at 16 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 South Point , TX
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location: 12.21, -97.29     debug

Area Discussion for - Brownsville, TX
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Fxus64 kbro 201053 aaa
area forecast discussion... Updated
national weather service brownsville tx
553 am cdt Mon may 20 2019

Discussion Updated for latest aviation discussion below.

Aviation MVFR conditions have mostly held overnight, with very
little ifr conditions. Expect generally MVFR conditions this
morning to give way toVFR by this afternoon. MVFR CIGS return
this evening and likely stick around through tonight.

Southeasterly winds pick up over the next few hours and continue
to increase overnight tonight, without much of any break for the
rgv airports. Winds could occasionally gust to near 30 knots this
evening into Tuesday morning.

Prev discussion issued 408 am cdt Mon may 20 2019
short term (today through Tuesday): low pressure and severe
weather over the southern plains helps southeasterly winds
increase by late this morning, due to the strengthening pressure
gradient across the lower texas coast. Moderate and dry
southwesterly flow aloft helping temperatures stay hot or even
rise a degree or two from the highs observed yesterday. With low
level moisture socked in place, heat index values will bump above
100 to 105 degrees this afternoon, and potentially top off near
heat advisory criteria of 111 degrees, especially across the upper
valley. These conditions may become dangerous for those exposed
through the main heat of the day. Remember to provide shade and
water for pets and livestock, as well as check on your elderly
friends, family, and neighbors.

Have held off on any wind advisory headlines, but following
shifts will have to monitor breezy to windy conditions across the
brush country and northern coastal zones, mainly both zapata and
kenedy counties. All coastal counties could get breezy to windy
overnight into Tuesday morning, possibly reaching near wind
advisory criteria.

A coastal flood statement is in effect from 5 am cdt to 10 am cdt
to cover any overwash or tidal runup this morning around high
tide at 722 am cdt. Not expecting too many impacts, just a
narrowing of any already narrow beaches and access points with
tides already running around one foot above predicted. Conditions
should begin to improve by this afternoon, at least on the beach.

Long term (Tuesday night through Sunday): a pair of 500 mb closed
lows over the northwestern and north central portions of the lower
48 states will rotate through the region around midweek. Meanwhile
over the southeastern states, 500 mb ridging will build steadily
through the end of the work week into the weekend while 500 mb
short waves and closed lows continue to dominate the western
states. As the 500 mb ridging builds over the southeastern u.S.,
the stability and overall deep layer moisture values will remain
pretty limited through day 7 8. Accordingly, will only mention
some silent 5 to 10 % pops throughout the longer range period.

The 1000-500 mb thickness values will range in the 582-584 dam
range around midweek with the thickness relaxing a bit later in
the week into the weekend. The minor drop in the thickness values
may allow for some small improvement in the overall high temps
through day 7 8. However, expect the longer range temps to remain
well above average for late may.

Heat index values will increase into the 100-109 degree range for
most of the work week. The bit of a drop in the temps this
weekend will allow the heat index values to diminish a bit on sat
and sun. But the overall index values will likely remain pretty
hazardous throughout the longer range period.

Marine (now through Tuesday): as the pressure gradient strengthens
along the lower texas coast, and southeasterly winds increase,
expect marine conditions to deteriorate and stay hazardous through
the short term period. A small craft advisory is now in effect
across the gulf waters from 10 am cdt this morning into late
tonight. A gale watch was hoisted last night for late tonight across
the gulf of mexico waters out 60 nautical miles. While gale
conditions are appearing more likely, leaned toward keeping the
watch for now, until SCA conditions were well underway, and
everything can be upgraded to a gale warning. A small craft advisory
for winds is in effect across the laguna madre from 10 am cdt this
morning into Tuesday morning, and will likely continue beyond.

Occasional gusts to near gale force are possible across the bay
waters, mainly north of port mansfield.

Tuesday night through Friday night: the presence of the 500 mb
troffing over the western states and ridging over the eastern
portion of the country will likely maintain a persistently strong
surface pgf through the end of the work week. Persistent surface
ridging over the gulf of mex will interact with a steady
progression of surface low pressure systems moving across the
central plains states to maintain SCA conditions over much of the
lower tx marine areas through Fri night.

Bro watches warnings advisories
Tx... None.

Gm... Small craft advisory for winds from 10 am this morning to 7 am
cdt Tuesday for gmz130-132-135.

Gale watch from this evening through Tuesday morning for gmz150-

Small craft advisory from 10 am this morning to 10 pm cdt this
evening for gmz150-155-170-175.

This product is also available on the web at:
http: weather.Gov rgv
56-hallman... Aviation

Weather Reporting Stations
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Airport Reports
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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 SouthCentralPlains    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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Brownsville, TX (10,2,3,4)
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Ground Weather Radar Station Brownsville, TX
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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.