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Old 08-26-2018, 09:07 AM
 
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26Aug18 8aPDT/11aEDT: Tropical Depression 15E has organized enough to become Tropical Storm Miriam far off the West Mexico coast. Estimated winds 45mph(75km/h), moving W 13mph(20km/h), pressure 1004mb. Located about 1,210miles(1,950km) WSW of S Tip of Baja.

Possibly a hurricane by Monday or Tuesday. Storm expected to head generally Westward under the influence of a High Pressure Ridge well to its North (High pressure moves clockwise thus the steering flow), then possibly turn more NW/N as that influence weakens but will want to watch its path to make sure it does stay far off Hawaii.

Pacific - Miriam forms August 26, 2018-m2.jpg

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

Once Lane crosses 140W on the maps it will then be in the Central Pacific where updates will be supplied from: Central Pacific Hurricane Center - Honolulu, Hawai`i

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):
Pacific - Miriam forms August 26, 2018-m1.jpg

Satellite imagery:
GOES 16 (GOESeast) until it gets too far West (Out newest operational weather satellite): https://www.star.nesdis.noaa.gov/GOES/index.php
Tropical Tidbits: https://www.tropicaltidbits.com/sat/
GOESwest (the older one about to be replaced with GOES 17(in testing way up there in the sky somewhere): GOES West Satellite Imagery - Satellite Services Division / Office of Satellite Data Processing and Distribution

Pacific - Miriam forms August 26, 2018-m3.jpg
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Old 08-27-2018, 04:11 AM
 
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27Aug18 2aPDT/5aEDT - Estimated winds 60mph(95km/h), moving W 15mph(24km/h), pressure 1000mb.
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Old 08-28-2018, 04:28 AM
 
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28Aug18 2aPDT/5aEDT (27Aug 11pHST) - Estimated winds 65mph(100km/h), moving W 12mph(19km/h), pressure 999mb. Likely hurricane later today & supposed to turn N Wednesday/Thursday.

Pacific - Miriam forms August 26, 2018-img_2987.png
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Old 08-28-2018, 09:08 PM
 
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28Aug18 5pHST/8pPDT/11pEDT - Estimated winds 60mph(95km/h), moving W 13mph(20km/h), pressure 100mb. Shear is keeping Miriam from strengthening currently and that may keep working against the system at some capacity next few days.

Pacific - Miriam forms August 26, 2018-m1.jpg
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Old 08-29-2018, 07:06 PM
 
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29Aug18 11aHST/2pPDT/5pEDT - Estimated winds 75mph(120km/h), moving W 9mph(15km/h), pressure 992mb. Cat1 hurricane now.

Miriam is crossing into the Central Pacific at 140W on the cone map which falls under the Central Pacific Hurricane Center (CPHC) and updates will now be issued from them starting at the next update time, but updates are still issued at the same times: Central Pacific Hurricane Center - Honolulu, Hawai`i
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Old 08-30-2018, 06:02 AM
 
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30Aug18 2aPDT/5aEDT(29Aug 11pHST) - Estimated winds 80mph(130km/h), moving WNW 8mph(13km/h), pressure 985mb. Looks to have started its turn up. Has about 24hours or so window to strengthen then intense wind shear tears it apart, dissipates in just a few days.

Pacific - Miriam forms August 26, 2018-img_3051.png
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Old 08-31-2018, 06:15 AM
 
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31Aug18 2aPDT/5aEDT(30Aug 11pHST) - Estimated winds 90mph(150km/h), moving N 9mph(15km/h), pressure 978mb.
Pacific - Miriam forms August 26, 2018-img_3074.png
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Old 09-01-2018, 04:26 AM
 
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1Sept18 2aPDT/5aEDT(31Aug 11pHST) - Estimated winds 85mph(140km/h), moving N 9mph(15km/h), pressure 981mb.
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Old 09-03-2018, 07:07 AM
 
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2Sept18 11aHST/2pPDT/5pEDT (Sunday)- Estimated winds 35mph(55km/h), moving NW 12mph(19km/h), pressure 1008mb. About 810miles(1,305km) NE of Hilo, HI. Miriam weakens to a remnant Low pressure system. This is the last advisory from the Hurricane Center. An archive of previous advisories can be found:

From NHC while East of 140W while in E Pacific: https://www.nhc.noaa.gov/archive/2018/MIRIAM.shtml?

From CPHC while West of 140W while in Central Pacific: Text Product Archive for Miriam
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