[Tropical] Tropical Weather Discussion

[EMWIN Server]

AXNT20 KNHC 191740
TWDAT

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1240 PM EST Sat Jan 19 2019

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 32N. The following information is based on satellite
imagery, weather observations, radar and meteorological analysis.

Based on 1200 UTC surface analysis and satellite imagery through
1730 UTC.

...SPECIAL FEATURES...

...Gale Warning in the western Gulf of Mexico...

A strong cold front has entered the northwestern Gulf of Mexico
this morning, and should move quickly southeastward across the
basin through the weekend. Strong northerly winds are already
occurring west of the front, and will reach gale-force near
Tampico this afternoon and near Veracruz tonight. Strong winds
will taper off across the basin by sunrise on Monday.

...Gale Warning in the western Atlantic...

Southerly winds are expected to increase over portions of the
western Atlantic Saturday afternoon ahead of the cold front that
will be moving over the Gulf of Mexico. The cold front will push
off the Florida coast Sunday morning, then reach from 31N68W to
central Cuba Sunday night, from 26N65W to northern Haiti Monday
afternoon, then become stationary from 22N65W to the Dominican
Republic Tuesday night. Gale force winds will be possible on
either side of the front north of 28N and west of 60W on Sunday
through Monday. Seas will build to near 20 feet in northwest
swell behind the front near 31N65W on Tuesday.

...Gale Warning in the South-Central Caribbean...

Fresh to strong trade winds will continue in the south-central
Caribbean through Wednesday night and increase to gale-force
along the immediate coast of Colombia each night.

For additional information on all of these warning areas, please
read the High Seas Forecast product under the AWIPS/WMO headers
HSFAT2/FZNT02 KNHC.

...MONSOON TROUGH/ITCZ...

The monsoon trough emerges from the coast of Sierra Leone near
05N10W and extends to 01N18W. The ITCZ continues from that point
to the coast of Brazil near 03S40W. Scattered showers are noted
along the ITCZ.

GULF OF MEXICO...

A cold front has entered the northwestern portion of the basin,
extending from 30N93W to 27N97W then continues across northern
Mexico. A pre-frontal trough is analyzed from 29N93W to 27N95W.
Scattered moderate to strong convection is observed along this
trough. Winds are expected to reach gale-force this afternoon.
Refer to the section above for more details.

The front will extend from 30N85W to 25N88W to 19N92W by tonight,
then exit from the Gulf Sunday morning. This will allow strong
winds to taper off across the basin by sunrise on Monday. High
pressure ridging over the Gulf from the north will shift east and
allow strong southerly return flow to develop over the basin by
early next week. Another strong cold front could enter the
northwest Gulf by Wednesday.

CARIBBEAN SEA...

Quiet weather prevails across the Caribbean. Only typical patches
of low clouds and some embedded showers exist across Hispaniola,
eastern Cuba, Jamaica and the waters near the Cayman Islands. The
trade winds are strongest near the coast of Colombia.

Fresh to strong trade winds will continue in the south-central
Caribbean through mid week. The winds will increase to gale-force
along the immediate coast of Colombia tonight and Saturday night,
and then again each night through this period also. Refer to the
section above for more details. Moderate to locally fresh trade
winds will prevail elsewhere. A strong cold front will enter the
northwest Caribbean on Sunday morning, push east and extend from
Haiti to Nicaragua on Monday night, then stall and weaken on
Tuesday. Fresh to strong NW to N winds and seas to 8 ft are
expected west of the front.

ATLANTIC OCEAN...

A surface trough extends east of the Bahamas from 28N71W to
24N72W. Scattered showers are noted within 60 nm east of the
trough. To the east, a 1016 mb low is centered near 28N59W. A
surface trough extends from 35N54W to the low to 25N59W. Scattered
moderate convection prevails with these features between 51W-56W.
Another trough extends from 29N49W to 22N53W with scattered
moderate convection. Surface ridging prevails across the eastern
Atlantic, anchored by a 1033 mb high centered near 34N28W.

Weak surface ridging in the west Atlantic will drift eastward
toward Bermuda today. Southerly winds will strengthen this
afternoon through Sunday morning east of Florida ahead of a
strong cold front. The front will push off the Florida coast early
on Sunday, then reach from 31N68W to central Cuba by Sunday
night, from 26N65W to northern Haiti on Monday afternoon, then
become stationary from 22N65W to northern Dominican Republic by
Tuesday night. Gale-force winds will be possible on either side
of the front. Refer to the section above for details. Strong winds
will develop between the front and 25N on Tue as strong high
pressure builds to the north of the front. Winds will subside by
mid-week as the front weakens and high pressure shifts east.

For additional information please visit
http://www.hurricanes.gov/marine

$$

ERA
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