Sunday, July22, 2018 L-36.com


Marine Weather and Tides
Guadalupe-Guerra, TX

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7/21/2018 Trying to make page Mobile Friendly

Sunrise 7:26AMSunset 8:49PM Sunday July 22, 2018 5:22 PM CDT (22:22 UTC) Moonrise 2:46PMMoonset 1:29AM Illumination 75% Phase: Waxing Gibbous; Moon at 10 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 Guadalupe-Guerra, TX
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location: 20.87, -105.44     debug


Area Discussion for - Brownsville, TX
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Fxus64 kbro 222044
afdbro
area forecast discussion
national weather service brownsville tx
344 pm cdt Sun jul 22 2018

Heat advisory may be warranted Monday...

.Short term (now through Monday night): models have not wavered
much in the last 12-24 hours and the hottest temperatures of the
year are on tap for Monday. With the center of the expansive
anomalously strong ridge centered over new mexico, heights,
thicknesses and 850mb temps reach their respective peaks. Model
guidance indicates ambient tempeatures between 105 and 110
degrees along and west of highway 281 69c. Just the ambient
temperatures approaching 110 degrees should warrant a heat
advisory with the main concern that dew points do not mix out
sufficiently to keep heat indices below the 111 degree criterion.

Over the eastern counties and closer to the coast the concern is
dew points rh values remain high enough with temperatures nearing
or exceeding 100 degrees for at least a few hours to push the heat
indices above the threshold. In any case, will let overnight crew
have one more model run to view before pushing the trigger for a
possible area-wide heat advisory. Clear skies and lighter winds
will allow for temperatures to slowly drop off with mid to upper
70s overnight. Monday night will be a few degrees warmer with
daytime highs maxing out.

.Long term (Tuesday through Sunday): the 500mb high will remain
very strong through mid week with model consensus showing heights
nearing 600dam. Fortunately, the ridge axis will begin to shift
westward into the desert southwest as a deep trough digs into the
great lakes and mid atlantic regions. This will shift the mid-
level flow to the north and northeast across deep south texas with
1000 to 500mb thickness also decreasing towards the end of the
week. This will allow a weakness in the flow and perhaps an
actual chance of precipitation again Wednesday into Thursday.

Models differ quite a bit with the GFS going the highest at 20 to
30% along the coast and the ECMWF staying at around 10%. At this
point, have kept pops at 10% inland and 20% offshore where the
better moisture and lift will be.

Despite lowering mid-level heights, we are in the climatological
peak of high temperatures, so it's going to be hot each day.

However, highs will be less uncomfortable and range from the mid
to upper 90s in the lower valley to around 105f in the upper
valley. Heat indices will range from 105 to 110 and possibly
approach the heat advisory criterion at times.

.Marine (now through Monday night): surface high pressure stretching
across the gulf of mexico and lower pressure in the sierra madre
mountains will maintain south to southeast winds off the lower texas
coast. Light to moderate winds persist through Monday night with
slightly stronger winds over the laguna madre bay Monday
afternoon.

Tuesday through Friday: a pretty mild pgf will prevail throughout
much of the week over the western gulf and the lower tx
coastline. This will maintain pretty benign wind and sea activity
across the laguna madre and the lower tx gulf waters. No sca
conditions expected through late thurs.

Fire weather Fire weather conditions are still a concern Monday
with the extreme heat. Humidity levels will be on the threshold
area-wide but winds and fuel dryness remain limiting factors. At
max mixing relative humidity levels look to be in the 15-30
percent range along and west of 281 69c and 30-45 percent east to
the coast. Strongest winds are likely over the east with much
lighter winds expected west. Currently, fire conditions remain
just below elevated criteria but with the extreme temperatures and
some afternoon gustiness it is still suggested to refrain from
any burning or working with any equipment that might ignite a
spark.

Preliminary point temps pops
Bayview port isabel 79 97 79 97 0 0 0 10
brownsville 79 101 80 99 0 0 0 10
harlingen 77 103 79 102 0 0 0 10
mcallen 79 105 79 104 0 0 0 10
rio grande city 76 109 77 108 0 0 0 0
south padre island 81 93 81 93 0 0 0 10

Bro watches warnings advisories
Tx... None.

Gm... None.

This product is also available on the web at:
http: weather.Gov rgv
short term... 59
long term... 65


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.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Brownsville, TX (18,4,5,8)
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Ground Weather Radar Station Brownsville, TX
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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.