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Old 09-08-2018, 03:18 PM
 
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8Sept18 5pEDT/AST: Invest 92L became Tropical Depression 9 (TD9) and now Tropical Storm Isaac between Africa and the Caribbean. Estimated winds 40mph(65km/h), moving W 7mph(11km/h), pressure 1005mb.

Hurricane possible in a few days near the East Caribbean. Wind shear still high across the Central Caribbean and this may cause the storm to eventually weaken but a ways out still.

Official updates for Atlantic basin storms comes from the US National Hurricane Center based in Miami, FL. Updates are issued at 5 & 11am/pmEDT/AST (If Watches/Warnings issued then updates are also added at 2 & 8am/pmEDT/AST) here: https://www.nhc.noaa.gov

Cone map (Shows: Current storm wind field at storm center(orange: winds 39mph+, red: 74mph+), Classification (Black/white dots with letters: "D" = Depression, "S" = Tropical Storm, "H" = Cat1 or Cat2 Hurricane, "M" = Major Hurricane (Cat3+)), any coastal tropical Watches/Warnings, and the "cone" is where the center of the storm could be over time (it's NOT the size of the storm), effects of the storm can be felt outside this area:
Atlantic - Isaac forms September 8, 2018-___i1.jpg


Some Satellite imagery sources:
-Tropical Tidbits: https://www.tropicaltidbits.com/sat/
-GOESeast(GOES16): https://www.star.nesdis.noaa.gov/GOES/index.php
-WeatherNerds: https://www.weathernerds.org/satellite/floaters/
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Old 09-08-2018, 03:40 PM
 
Location: Deep 13
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I was in Gulfport, MS 6 years ago for the first Isaac.
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Old 09-08-2018, 11:32 PM
 
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Isaac Strengthening Over the Eastern Tropical Atlantic
Posted: 4:24 PM, September 07, 2018
Updated: 4:05 PM, September 08, 2018

1580 miles E of The Windward Islands
Wind 50 mph
Pressure 29.59
Heading W at 8 mph
Coordinates 37.5W, 14.4N

Discussion
At 1100 p.m. AST (0300 UTC), the center of Tropical Storm Isaac was located near latitude 14.4 north, longitude 37.5 west. Isaac is moving toward the west near 8 mph (13 km/h). A westward motion with an increase in forward speed is expected during the next few days.
Maximum sustained winds have increased to near 50 mph (85 km/h) with higher gusts. Additional strengthening is forecast during the next few days, and Isaac is expected to become a hurricane by Monday.
Tropical-storm-force winds extend outward up to 45 miles (75 km) from the center.
The estimated minimum central pressure is 1002 mb (29.59 inches).
https://www.click2houston.com/weathe...cane/td-9-2018 (Houston News)
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Old 09-09-2018, 06:36 AM
 
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9Sept18 5aEDT/AST - Estimated winds 50mph(85km/h), moving W 9mph(15km/h), pressure 1001mb. NHC does have it weakening starting in about 3 to 4 days though, but becoming a Cat2 Hurricane first.



Atlantic - Isaac forms September 8, 2018-____i1.jpg
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Old 09-09-2018, 03:50 PM
 
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9Sept18 5pEDT/AST - Estimated winds 70mph(110km/h), moving W 12mph(19km/h), pressure 997mb. Hurricane shortly with continued strengthening likely, but in just a few days expected to start weakening but areas of the Eastern Caribbean (Lesser Antilles) need to be monitoring for possible impacts. Models widely disagree on how strong the storm will be approaching the islands.

Atlantic - Isaac forms September 8, 2018-_ssd.jpg

Atlantic - Isaac forms September 8, 2018-_mapsss.jpg
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Old 09-09-2018, 09:12 PM
 
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9Sept18 11pEDT/AST - Estimated winds 75mph(120km/h), moving W 14mph(22km/h), pressure 993mb. Cat1 hurricane now.
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Old 09-10-2018, 07:32 PM
 
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10Sept18 5pEDT/AST - Estimated winds 75mph(120km/h), moving W 14mph(22km/h), pressure 993mb. Cat1 hurricane. Hurricane force winds(74+mph) only go out about 10miles(20km) from storm center, Tropical Storm force winds (39+mph) go out about 45miles(75km). Pretty small storm which are harder to predict strength on. NHC now calling for some additional strengthening before weakening begins late in the week. Remains to be seen how strong it will be when it approaches the islands.


Atlantic - Isaac forms September 8, 2018-yyyyyyyyy.jpg


Atlantic - Isaac forms September 8, 2018-yyyyyyy2.jpg


Atlantic - Isaac forms September 8, 2018-yyyyyyyyyyyyyy3.jpg
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Old 09-11-2018, 09:23 PM
JRR
 
Location: Middle Tennessee
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Looks like Isaac will go through the Lesser Antilles as a tropical storm and then gradually weaken and will dissipate by 120 hours. So no danger from this one to the US.

Still have that area in the Gulf to watch over the next couple of days as it may develop.
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Old 09-13-2018, 08:24 PM
 
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13Sept18 5pEDT Estimated winds 40mph(65km/h), moving W 16mph(26km/h), pressure 1006mb. All Watches/Warnings canceled as storm has moved into the Caribbean.

Possible rain totals:
Dominica: 2-4in, isolated 8-10in
Martinique & Guadeloupe: 2-4in, isolated 6in
Southeast Puerto Rico: 2-4in
Rest of Puerto Rico & US Virgin Islands: 1-2in, isolated 3in

Cone map (where center of storm could be in time, "S" = Tropical Storm, "D" = weaker Tropical Depression):
Atlantic - Isaac forms September 8, 2018-img_3700.png

Models overall continue the storm Westward towards general Yucat√°n region but NHC (National Hurricane Center) states there is high uncertainty in a few days with if storm falls apart then stays more South, but if stays together then may ride a little higher in the track, so we'll watch but overall guidance suggest the weaker more southern of the cone track.
Atlantic - Isaac forms September 8, 2018-img_3698.png
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Old 09-14-2018, 05:53 PM
 
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The models on Levi's page have this possibly heading to TX or FL.
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