Wednesday, November14, 2018 L-36.com


Marine Weather and Tides
Rosenberg, 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 6:46AMSunset 5:29PM Wednesday November 14, 2018 2:14 PM CST (20:14 UTC) Moonrise 12:35PMMoonset 11:32PM Illumination 42% Phase: First Quarter Moon; Moon at 7 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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GMZ335 Matagorda Bay-galveston Bay- 957 Am Cst Wed Nov 14 2018
.low water advisory in effect until 10 pm cst this evening...
Rest of today..Northwest winds 10 to 15 knots. Bay waters slightly choppy.
Tonight..North winds 10 to 15 knots decreasing to 5 to 10 knots after midnight. Bay waters slightly choppy becoming smooth after midnight.
Thursday..North winds 5 to 10 knots becoming west in the afternoon. Bay waters smooth.
Thursday night..West winds around 5 knots. Bay waters smooth.
Friday..West winds around 5 knots becoming south in the afternoon. Bay waters smooth.
Friday night..Southeast winds 5 to 10 knots. Bay waters smooth.
Saturday..Southeast winds 5 to 10 knots. Bay waters smooth.
Saturday night..Southeast winds 5 to 10 knots. Bay waters smooth. A slight chance of showers.
Sunday..East winds 5 to 10 knots. Bay waters smooth. A slight chance of showers.
Sunday night..Northeast winds 5 to 10 knots increasing to 10 to 15 knots after midnight. Bay waters smooth becoming slightly choppy after midnight. A chance of showers.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 957 Am Cst Wed Nov 14 2018
Synopsis for high island to matagorda ship channel out 60 nm.. Northerly winds should slowly decrease today across the upper texas coast. Small craft advisories should expire as conditions decrease this afternoon. Offshore winds will continue to support below normal tide levels. Low water advisory is still in effect for the bays to cover low tide conditions this evening. Low winds and seas are expected the rest of the week with onshore winds developing over the weekend ahead of another front late Sunday.


7 Day Forecast for Marine Location Near Rosenberg, TX
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location: 29.55, -95.82     debug


Area Discussion for - Houston/Galveston, TX
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Fxus64 khgx 141707
afdhgx
area forecast discussion
national weather service houston galveston tx
1107 am cst Wed nov 14 2018

Aviation
Vfr.

11

Prev discussion issued 1014 am cst Wed nov 14 2018
discussion...

not much to change on the morning update as the current forecast
package looks on track. After morning lows at or below freezing
across almost all of inland southeast texas, lots of sunshine
today will help to warm temperatures into the upper 40s to lower
50s. Surface high pressure centered over the area tonight along
with the clear skies will allow most inland low temperatures to
bottom out in the the upper 20s to lower 30s. Locations in and
around the bays and also at the coast will stay above freezing.

42
climate...

cll, iah, and hou have now gone five days in a row with average
daily temperatures more than ten degrees below normal. Yesterday's
departure at cll as 27 degrees below normal, iah's and hou's were
24 degrees below normal, and gls's was 22 degrees below normal.

For the month of november (thru the 13th)
- cll's average temperature of 57.9 degrees is 6 degrees below
normal (17th coldest on record)
- iah's average temperature of 61.4 degrees is 3.7 degrees below
normal (35th coldest on record)
- hou's average temperature of 62.9 degrees is 3 degrees below
normal (37th coldest on record)
- gls's average temperature of 65.6 degrees is 2.3 degrees below
normal (63rd coldest on record).

42
prev discussion issued 335 am cst Wed nov 14 2018 ...

discussion...

short term [today through Friday]...

high pressure is steadily building in from central texas,
causing skies to become clear and moderate north winds to dampen.

With little cloud cover to insulate the ground and relatively
light winds, temperatures this morning across southeast texas are
expected to fall to 25-32 f, with the exception of the coastal
areas where winds remain over 10 mph. The current freeze line, as
of 3 am, is roughly along and north of a wharton-the woodlands-
livingston line, and is expected to progress farther south
throughout the early morning hours. Therefore, a freeze warning
remains in effect for the entire CWA except the barrier islands
until 9 am cst today. Wind chills will dip down to 20-25 for
interior southeast texas, so be sure to bundle up for the morning
commute or bus stop. Forecast low temperatures this morning are
within 1 or 2 degrees f of record low minimum temperature for all
of our major climate sites, so this cold spell may be record-
breaking cold, in addition to the record-setting earliest snowfall
yesterday. High temperatures will struggle to reach 50 this
afternoon, which is over 20 degrees below normal.

Strong cold air advection remains in place with continuing clear
skies and calmer winds, causing low temperatures tonight to dip
down once again below freezing. Neither a freeze watch or warning
is in place because of the current freeze warning. Any areas that
do not dip to or below freezing this morning and are expected to
reach freezing tonight will be added to an additional freeze
warning. The remainder of the week will stay cloud-free as the
surface high progresses eastward over the northern gulf. Without
the oppressive sinking air associated with high pressure systems,
temperatures will be able to gradually increase to seasonal
average by Saturday with highs near 70 and lows near 50.

Long term [Saturday through Wednesday night]...

onshore flow resumes late Saturday, resulting in an increase in
moisture and cloud cover. This moisture slightly builds up over
southeast texas just in time for a weak cold front to approach the
region from the northwest. Highest rain chances will be Sunday
night into Monday morning along and behind this anafront. Although
canadian in origin, the coldest air will remain north of the
area. Temperatures will still decrease Monday and Tuesday from
highs in the 70s to highs in the 60s, but nowhere near as cold as
we are currently experiencing.

Moderate northerly surface winds behind the front on Monday will
quickly veer to onshore on Tuesday, as a coastal trough builds
over the southwestern gulf. The associated moisture return will
result in an increase in pops Tuesday and Wednesday. An additional
"rain-maker" mid-week next week will be a cold front crossing
through texas on Wednesday and Thursday. While there is still
much uncertainty and a large model spread with timing and details
of the front, all show some disturbance progressing through
southeast texas around thanksgiving. For now, rain chances
increase heading into the holiday, making this the feature to
watch in the upcoming forecast.

22
marine...

there is a wide disparity between seas at the 42035 buoy and
offshore at 42019. 42035 showing 3 ft seas while 42019 showing 8
ft seas. Winds along the coast are borderline SCA while advisory
conditions are holding strong offshore. The current stair step
decrease in hazards for advisories looks on track as winds seas
should continue to decrease with high pressure at the surface over
the hill country. Exercise cautions may need to replace the
advisories at some point in the transition to lower winds seas for
this afternoon and tonight. Low winds and seas are expected
tomorrow and Friday. Southerly winds develop on Saturday with
another front pushing off the coast late Sunday into Monday.

Tide levels up in the houston ship channel of galveston bay and
closer to port lavaca in matagorda bay are increasing heading into
high tide this morning. Offshore winds will continue today so the
low water advisory will be needed for tides about 1 foot below
normal this evening with low tide.

Overpeck

Preliminary point temps pops
College station (cll) 48 30 58 37 66 0 0 0 0 0
houston (iah) 49 31 56 38 65 0 0 0 0 0
galveston (gls) 52 42 55 50 64 0 0 0 0 0

Hgx watches warnings advisories
Tx... None.

Gm... Low water advisory until 10 pm cst this evening for the
following zones: galveston bay... Matagorda bay.

Small craft should exercise caution until 6 pm cst this evening
for the following zones: coastal waters from freeport to
matagorda ship channel tx out 20 nm... Coastal waters from
high island to freeport tx out 20 nm.

Small craft advisory until noon cst today for the following
zones: waters from freeport to matagorda ship channel tx
from 20 to 60 nm... Waters from high island to freeport tx
from 20 to 60 nm.

Small craft should exercise caution until 6 pm cst this evening
for the following zones: waters from freeport to matagorda
ship channel tx from 20 to 60 nm... Waters from high island
to freeport tx from 20 to 60 nm.

Discussion... 42
aviation marine... 11


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NCHT2 - 8770777 - Manchester, TX 32 mi45 min NW 5.1 G 8.9 51°F 67°F1028.5 hPa
MGPT2 - 8770613 - Morgans Point, TX 45 mi45 min NW 8.9 G 13 47°F 60°F1028.9 hPa
EPTT2 - 8771013 - Eagle Point, TX 48 mi45 min NNW 7 G 12 48°F 53°F1029.1 hPa
LUIT2 49 mi45 min NNW 13 G 18 47°F 1029 hPa
FCGT2 - 8772447 - USCG Freeport, TX 50 mi45 min NW 8.9 G 17 49°F 59°F1029.6 hPa

Wind History for Morgans Point, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Houston, Sugar Land Municipal / Hull Field Airport, TX10 mi22 minWNW 1110.00 miFair52°F23°F32%1029.4 hPa
Houston Southwest Airport, TX18 mi20 minNNW 810.00 miFair52°F23°F33%1029.8 hPa
Houston Executive Airport, TX18 mi20 minNW 9 G 1510.00 miFair50°F14°F24%1029.8 hPa

Wind History from SGR (wind in knots)
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2 days agoNE8E8E10NE8NE9E9NE11NE9E9E8E11
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Tide / Current Tables for Clear Lake, Harris Co. Park, Texas (2)
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Clear Lake
Click for Map
Wed -- 05:02 AM CST     1.00 feet High Tide
Wed -- 06:43 AM CST     Sunrise
Wed -- 12:32 PM CST     Moonrise
Wed -- 05:25 PM CST     Sunset
Wed -- 09:15 PM CST     0.24 feet Low Tide
Wed -- 11:29 PM CST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.50.60.80.911110.90.90.90.90.80.80.80.70.60.50.40.30.30.20.30.3

Tide / Current Tables for Clear Lake, Harris Co. Park, Texas
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Clear Lake
Click for Map
Wed -- 06:06 AM CST     0.81 feet High Tide
Wed -- 06:43 AM CST     Sunrise
Wed -- 12:32 PM CST     Moonrise
Wed -- 05:25 PM CST     Sunset
Wed -- 09:19 PM CST     0.07 feet Low Tide
Wed -- 11:29 PM CST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.30.50.60.70.80.80.80.80.80.80.70.70.60.60.60.50.40.30.20.20.10.10.10.1

Weather Map and Satellite Images
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GOES Local Image of    EDIT
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Wind Forecast for Houston/Galveston, TX (15,3,4,5)
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Ground Weather Radar Station Houston/Galveston, TX
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Gulf Stream Current


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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.