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Tropical Tropical Storm Marco

ForsythSnow

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This is the wave in front behind Josephine

1. Shower and thunderstorm activity has continued to increase in
association with a fast-moving tropical wave located about 500 miles
east of the Windward Islands. This disturbance is expected to move
westward at about 20 mph during the next few days, and that fast
forward speed is likely to limit significant development while the
system approaches the Windward and southern Leeward Islands on
Monday, and moves across the eastern Caribbean Sea on Tuesday.
After that time, however, the system is expected to move more slowly
westward across the central and western Caribbean Sea, where
upper-level winds could become more conducive for the development of
a tropical depression during the middle-to-latter part of this week.
* Formation chance through 48 hours...low...20 percent.
* Formation chance through 5 days...medium...50 percent.
 
gfs_mslp_pcpn_watl_22.png
Gulf bound
 
Code Red Marco?

A tropical wave over the eastern Caribbean Sea continues to produce
an area of disorganized thunderstorms and gusty winds. This wave
is moving quickly westward at about 20 mph and significant
development is unlikely while it moves across the eastern and
central Caribbean Sea during the next day or two. After that time,
however, the wave is forecast to slow down, and a tropical
depression will likely form late this week or this weekend when it
reaches the northwestern Caribbean Sea.
* Formation chance through 48 hours...low...30 percent.
* Formation chance through 5 days...high...70 percent.
 
12Z Icon continues the trend of a stronger 97L/weaker 98L through hour 120.
 
this one may be the sleeper

it'd be wild if this got named first :p


Showers and thunderstorms have become more concentrated today in
association with a tropical wave currently located over the central
Caribbean Sea. Some gradual development of this system is possible
over next day or so while it moves westward at about 15 to 20 mph
across the central Caribbean Sea. After that time, the wave is
forecast to move more slowly west-northwestward, and a tropical
depression is likely to form later this week when the system
reaches the northwestern Caribbean Sea.
* Formation chance through 48 hours...medium...60 percent.
* Formation chance through 5 days...high...80 percent.
 
this one may be the sleeper

it'd be wild if this got named first :p


Showers and thunderstorms have become more concentrated today in
association with a tropical wave currently located over the central
Caribbean Sea. Some gradual development of this system is possible
over next day or so while it moves westward at about 15 to 20 mph
across the central Caribbean Sea. After that time, the wave is
forecast to move more slowly west-northwestward, and a tropical
depression is likely to form later this week when the system
reaches the northwestern Caribbean Sea.
* Formation chance through 48 hours...medium...60 percent.
* Formation chance through 5 days...high...80 percent.
Interesting that you say it might be the sleeper.....look what GFS-Para did with it.

ScreenshotCapture_2020_08_19_19_31_41_355.jpg
 
This one going up too with no globals support

A tropical wave and accompanying broad area of low pressure is
producing a concentrated area of showers and thunderstorms over the
central Caribbean Sea. This system is gradually becoming better
organized, and a tropical depression is likely to form in a couple
of days when the system reaches the northwestern Caribbean Sea.
This low pressure area is moving westward, and interests in Honduras
and the Yucatan Peninsula should closely monitor its progress.
Regardless of development, this disturbance will likely produce
heavy rains across a large portion of Central America and
southeastern Mexico late this week and this weekend.
* Formation chance through 48 hours...high...70 percent.
* Formation chance through 5 days...high...80 percent.
 
Looks like around Galveston it's weak but hey it's better than 13 which is just some showersprateptype_cat_ecmwf.conus (1).png
 
I have to wonder if a strengthening 97L could end up inhibiting TD 13. Any opinions?
 
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