Subj : TROPDISC: Atlantic Storm
To   : All
From : Mike Powell
Date : Mon Dec 18 2023 11:19:00

868 
AXNT20 KNHC 181115
TWDAT 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1205 UTC Mon Dec 18 2023

Tropical Weather Discussion for North America, Central America
Gulf of Mexico, Caribbean Sea, northern sections of South
America, and Atlantic Ocean to the African coast from the
Equator to 31N. The following information is based on satellite
imagery, weather observations, radar and meteorological analysis.

Based on 0600 UTC surface analysis and satellite imagery through 
1030 UTC.

...SPECIAL FEATURES...

Western Atlantic Gale Warning: 
A cold front extends from 984 mb low pressure located along the
North Carolina coast to 24N75W to central Cuba along 77W. A warm
front extends from the low to near 23N66W. A tight pressure
gradient between a ridge extending SW from strong high pressure of
1046 mb near 43N50W and the area of low pressure is supporting
gale-force winds over the western Atlantic waters, on both the E
and W of the cold front. Seas in this area are up to 20 ft along
30-31N. A large area of 12 ft seas has been generated by this
system, with seas greater than 12 ft over the waters N of 23N and
W of 65W. The low will track quickly northeastward along the
Atlantic coast today, with gale force winds lifting N of the area
by Tue morning. The area of 12 ft seas will shift eastward, 
merging with another area of large swell generated from gales over
the central Atlantic. 

Central Atlantic Gale Warning:
Strong high pressure will continue to build over the north central
Atlantic. This will continue to tighten the pressure gradient
between this area of high pressure and a stationary front
extending from 31N36W to 20N60W. This will support gale force
winds over the discussion waters N of 25N between 40W and 52W
today. Seas of 12 to 16 ft currently over these waters will build
to near 20 ft by this evening, with seas greater than 12 ft
spreading southward and westward, merging with the area of 12 ft
seas generated from the gale force winds over the western Atlantic
waters through the middle of the week. The strong high pressure
will shift further NE and away from the area, loosening the 
pressure gradient across the central Atlantic waters diminishing 
winds below gale force Tue evening. 

 [...]

....GULF OF MEXICO...

 [...]

For the forecast, the strong low pressure that was affecting the 
Gulf region is now along the E coast of the U.S., with the 
associated cold front moving SE across the western Caribbean. 
Fresh NW to N winds continue across the eastern Gulf and will 
gradually diminish today. High pressure will dominate the weather 
pattern across the Gulf waters through Tue, then strengthen N of 
the region Wed through Thu to produce fresh to strong NE to E 
winds across the eastern Gulf, including the Straits of Florida. 

....ATLANTIC OCEAN...

 [...]

For the forecast W of 55W, a western Atlantic cold front extends 
through 31N73W to 24N75W to eastern Cuba along 77W. Gales ahead 
of the front will persist through Tue while gales behind the 
front are expected to move N of the area this morning. The front 
is expected to reach from 31N69W to the E coast of Cuba by Mon 
evening, from 31N61W to the N coast of Hispaniola near 19N70W by 
Wed evening, and from 28N55W to eastern Hispaniola by Thu evening.
Strong high pressure will build into the western Atlantic behind 
the front Tue night through early Thu to produce fresh to strong 
winds. 

$$
Stripling
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