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Notices

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Port Updates
SubjectDatePriority
Houston, Galveston, Texas City, & Freeport, TX - Daily Port Update 09/30/2018 Normal
Houston, Galveston, Texas City, & Freeport, TX - Daily Port Update 09/29/2018 Normal
Houston, Galveston, Texas City, & Freeport, TX - Daily Port Update 09/28/2018 Normal
Houston, Galveston, Texas City, & Freeport, TX - Daily Port Update 09/27/2018 Normal
Houston, Galveston, Texas City, & Freeport, TX - Daily Port Update 09/26/2018 Normal
Houston, Galveston, Texas City, & Freeport, TX - Daily Port Update 09/25/2018 Normal
Houston, Galveston, Texas City, & Freeport, TX - Daily Port Update 09/24/2018 Normal
Houston, Galveston, Texas City, & Freeport, TX - Daily Port Update 09/23/2018 Normal
Houston, Galveston, Texas City, & Freeport, TX - Daily Port Update 09/22/2018 Normal
Houston, Galveston, Texas City, & Freeport, TX - Daily Port Update 09/21/2018 Normal
Houston, Galveston, Texas City, & Freeport, TX - Daily Port Update 09/20/2018 Normal
Houston, Galveston, Texas City, & Freeport, TX - Daily Port Update 09/19/2018 Normal
Houston, Galveston, Texas City, & Freeport, TX - Daily Port Update 09/18/2018 Normal
NOAA - Isaac Remnants 09/17/2018 Normal
Houston, Galveston, Texas City, & Freeport, TX - Daily Port Update 09/17/2018 Normal
Houston, Galveston, Texas City, & Freeport, TX - Daily Port Update 09/16/2018 Normal
Houston, Galveston, Texas City, & Freeport, TX - Daily Port Update 09/15/2018 Normal
NOAA // US West Gulf Tropical Weather Outlook 09/14/2018 Normal
NOAA // Tropical Depression Isaac 09/14/2018 Normal
Houston, Galveston, Texas City, & Freeport, TX - Daily Port Update 09/14/2018 Normal
Houston, Galveston, Texas City, & Freeport, TX - Daily Port Update 09/13/2018 Normal
Tropical Disturbance US West Gulf 09/13/2018 Normal
NOAA Tropical Storm Isaac 09/13/2018 Normal
Houston, Galveston, Texas City, & Freeport, TX - Daily Port Update 09/12/2018 Normal
NOAA // US Gulf Tropical Weather Update09/12/2018 Normal
Latest weather briefing...flood potential and tropical disturbance in Gulf09/11/2018 Normal
Houston, Galveston, Texas City, & Freeport, TX - Daily Port Update 09/11/2018 Normal
NOAA - Tropical Weather Outlook 09/11/2018 Normal
Tropical Weather Outlook - US West Gulf 09/10/2018 Normal
Houston, Galveston, Texas City, & Freeport, TX - Daily Port Update 09/10/2018 Normal
Houston, Galveston, Texas City, & Freeport, TX - Daily Port Update 09/09/2018 Normal
Houston, Galveston, Texas City, & Freeport, TX - Daily Port Update 09/08/2018 Normal
Houston, Galveston, Texas City, & Freeport, TX - Daily Port Update 09/07/2018 Normal
Houston, Galveston, Texas City, & Freeport, TX - Daily Port Update 09/06/2018 Normal
Houston, Galveston, Texas City, & Freeport, TX - Daily Port Update 09/05/2018 Normal
NOAA - Tropical Storm Gordon 09/04/2018 Normal
Houston, Galveston, Texas City, & Freeport, TX - Daily Port Update 09/04/2018 Normal
Houston, Galveston, Texas City, & Freeport, TX - Daily Port Update 09/03/2018 Normal
Potential Tropical Cyclone Seven - Active Storm Advisory - Atlantic - Monday, September 03, 201809/03/2018 Normal
NOAA // Tropical Wave 09/01/2018 Normal
Houston, Galveston, Texas City, & Freeport, TX - Daily Port Update 09/01/2018 Normal

Daily Port Update
Subject:NOAA Tropical Storm Isaac
Date:Thursday, September 13, 2018
Priority:Normal
Notice:

<span-size:10.5pt;font-family:"Courier New";color:black">142

<span-size:10.5pt;font-family:"Courier New";color:black">WTNT44 KNHC 130859

<span-size:10.5pt;font-family:"Courier New";color:black">TCDAT4

<span-size:10.5pt;font-family:"Courier New";color:black"> 

<span-size:10.5pt;font-family:"Courier New";color:black">Tropical Storm Isaac Discussion Number  23

<span-size:10.5pt;font-family:"Courier New";color:black">NWS National Hurricane Center Miami FL       AL092018

<span-size:10.5pt;font-family:"Courier New";color:black">500 AM AST Thu Sep 13 2018

<span-size:10.5pt;font-family:"Courier New";color:black"> 

<span-size:10.5pt;font-family:"Courier New";color:black">Data from a NOAA P-3 Hurricane Hunter aircraft that departed the

<span-size:10.5pt;font-family:"Courier New";color:black">storm shortly before 0600 UTC indicated that the tropical storm has

<span-size:10.5pt;font-family:"Courier New";color:black">weakened a little more.  Maximum flight-level winds were around 51

<span-size:10.5pt;font-family:"Courier New";color:black">kt, while maximum SFMR winds were only 41 kt.  Both of these

<span-size:10.5pt;font-family:"Courier New";color:black">support an initial intensity of 40 kt.  Wind measurements from the

<span-size:10.5pt;font-family:"Courier New";color:black">plane also suggested that Isaac is close to opening up into a

<span-size:10.5pt;font-family:"Courier New";color:black">tropical wave and its circulation is likely barely closed at the

<span-size:10.5pt;font-family:"Courier New";color:black">surface.  Another P-3 mission is scheduled for this morning.

<span-size:10.5pt;font-family:"Courier New";color:black"> 

<span-size:10.5pt;font-family:"Courier New";color:black">Isaac is nearly completely devoid of deep convection at the moment,

<span-size:10.5pt;font-family:"Courier New";color:black">and is not trackable in radar data from Guadeloupe and Martinique.

<span-size:10.5pt;font-family:"Courier New";color:black">Given the lack of deep convection to sustain the cyclone, continued

<span-size:10.5pt;font-family:"Courier New";color:black">gradual weakening is expected.  However, given the extent of

<span-size:10.5pt;font-family:"Courier New";color:black">40 mph winds observed by the NOAA plane, Isaac is still likely to

<span-size:10.5pt;font-family:"Courier New";color:black">bring gusty conditions to many of the Leeward Islands through

<span-size:10.5pt;font-family:"Courier New";color:black">this afternoon.  The dynamical guidance is now in fairly good

<span-size:10.5pt;font-family:"Courier New";color:black">agreement on the intensity of Isaac for the next few days, and

<span-size:10.5pt;font-family:"Courier New";color:black">nearly all of the models depict Isaac opening into a trough between

<span-size:10.5pt;font-family:"Courier New";color:black">48 and 96 h.  The NHC forecast conservatively maintains Isaac

<span-size:10.5pt;font-family:"Courier New";color:black">through day 4 in an attempt to maintain some continuity, but it

<span-size:10.5pt;font-family:"Courier New";color:black">is very possible that Isaac will open into a trough sooner than

<span-size:10.5pt;font-family:"Courier New";color:black">indicated.  Some of the dynamical models suggest that regeneration

<span-size:10.5pt;font-family:"Courier New";color:black">could occur in the western Caribbean, however the predictability of

<span-size:10.5pt;font-family:"Courier New";color:black">such an event is too low to explicitly show in the forecast at this

<span-size:10.5pt;font-family:"Courier New";color:black">point.

<span-size:10.5pt;font-family:"Courier New";color:black"> 

<span-size:10.5pt;font-family:"Courier New";color:black">Isaac is still moving quickly westward, with an initial motion of

<span-size:10.5pt;font-family:"Courier New";color:black">275/15 kt.  Confidence in the track forecast remains high, and the

<span-size:10.5pt;font-family:"Courier New";color:black">track guidance is tightly clustered through the forecast period.

<span-size:10.5pt;font-family:"Courier New";color:black">Very little change was made to the track forecast, which continues

<span-size:10.5pt;font-family:"Courier New";color:black">to closely follow the HCCA model.  As long as Isaac remains a

<span-size:10.5pt;font-family:"Courier New";color:black">shallow cyclone, it should continue to be steered westward by the

<span-size:10.5pt;font-family:"Courier New";color:black">low-level tradewind flow, even if, or when, it opens up into a

<span-size:10.5pt;font-family:"Courier New";color:black">trough.

<span-size:10.5pt;font-family:"Courier New";color:black"> 

<span-size:10.5pt;font-family:"Courier New";color:black"> 

<span-size:10.5pt;font-family:"Courier New";color:black">Key Messages:

<span-size:10.5pt;font-family:"Courier New";color:black"> 

<span-size:10.5pt;font-family:"Courier New";color:black">1. Isaac is expected to produce tropical-storm-force winds across

<span-size:10.5pt;font-family:"Courier New";color:black">portions of the Lesser Antilles this morning and afternoon, and

<span-size:10.5pt;font-family:"Courier New";color:black">tropical storm warnings are in effect for Martinique, Dominica, and

<span-size:10.5pt;font-family:"Courier New";color:black">Guadeloupe.

<span-size:10.5pt;font-family:"Courier New";color:black"> 

<span-size:10.5pt;font-family:"Courier New";color:black">2. Tropical storm watches are in effect for Montserrat, St. Kitts

<span-size:10.5pt;font-family:"Courier New";color:black">and Nevis, Antigua, Barbuda, Saba and St. Eustatius, St. Maarten,

<span-size:10.5pt;font-family:"Courier New";color:black">and St. Martin.  Tropical storm conditions are possible on these

<span-size:10.5pt;font-family:"Courier New";color:black">islands today and interests on those islands should follow any

<span-size:10.5pt;font-family:"Courier New";color:black">advice given by their local officials.

<span-size:10.5pt;font-family:"Courier New";color:black"> 

<span-size:10.5pt;font-family:"Courier New";color:black"> 

<span-size:10.5pt;font-family:"Courier New";color:black">FORECAST POSITIONS AND MAX WINDS

<span-size:10.5pt;font-family:"Courier New";color:black"> 

<span-size:10.5pt;font-family:"Courier New";color:black">INIT  13/0900Z 15.4N  59.7W   40 KT  45 MPH

<span-size:10.5pt;font-family:"Courier New";color:black">12H  13/1800Z 15.5N  61.8W   35 KT  40 MPH

<span-size:10.5pt;font-family:"Courier New";color:black">24H  14/0600Z 15.5N  64.8W   35 KT  40 MPH

<span-size:10.5pt;font-family:"Courier New";color:black">36H  14/1800Z 15.5N  67.8W   35 KT  40 MPH

<span-size:10.5pt;font-family:"Courier New";color:black">48H  15/0600Z 15.4N  70.4W   35 KT  40 MPH

<span-size:10.5pt;font-family:"Courier New";color:black">72H  16/0600Z 15.6N  74.8W   35 KT  40 MPH

<span-size:10.5pt;font-family:"Courier New";color:black">96H  17/0600Z 16.9N  78.5W   30 KT  35 MPH

<span-size:10.5pt;font-family:"Courier New";color:black">120H  18/0600Z...DISSIPATED

<span-size:10.5pt;font-family:"Courier New";color:black"> 

<span-size:10.5pt;font-family:"Courier New";color:black">$$

<span-size:10.5pt;font-family:"Courier New";color:black">Forecaster Zelinsky

<span-size:10.5pt;font-family:"Courier New";color:black"> 

Notice posted on Thursday, September 13, 2018

Disclaimer
For quality assurance purposes please note well that while the above information is regularly vetted for accuracy it is not intended to replace the local knowledge or expertise pertaining to port conditions of our marine operations personnel. Port précis should always be verified by contacting the corresponding marine department of a particular location for the most up-to-date information.