[Tropical] Tropical Weather Discussion

[EMWIN Server]

AXNT20 KNHC 061628
TWDAT

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1128 AM EST Mon Mar 6 2017

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
1600 UTC.

...SPECIAL FEATURES...
A strong pressure gradient between high pressure anchored near
Cape Hatteras North Carolinas and lower pressure analyzed across
northwestern South America is forecast to pulse winds into near
gale to gale force levels each night and early morning within
about 90 nm of the NW coast of Colombia. These conditions will
continue through Thursday night. See the latest NWS High Seas
Forecast under AWIPS/WMO headers MIAHSFAT2/FZNT02 KNHC for more
details.

Strong high pressure is centered across the Outer Banks of North
Carolinas and continues to hold influence across the SW North Atlc
behind a cold front analyzed from 21N60W to Hispaniola to the N
coast of Jamaica. Near gale to gale force E-NE winds continue
across the Windward Passage region and adjacent Caribbean Sea
waters. See the latest NWS High Seas Forecast under AWIPS/WMO
headers MIAHSFAT2/FZNT02 KNHC for more details.

...ITCZ/MONSOON TROUGH...
The Monsoon Trough extends from the African coast near 07N11W to
01N18W. The Intertropical Convergence Zone axis extends from
01N18W to the Equator near 20W. Isolated moderate convection is
from 02N-05N between 22W-38W.

...DISCUSSION...

GULF OF MEXICO...
Middle to upper level ridging continues building in over the Gulf
basin this afternoon. At the surface...the southwestern periphery
of a surface ridge anchored by a 1035 mb high centered across the
Outer Banks near 36N75W is providing fresh to strong E-SE winds E
of 90W and moderate to fresh S-SE winds W of 90W. The wind field
is forecast to gradually diminish through Tuesday night with the
next weak frontal boundary expected to emerge off the Texas and
Louisiana coast late Tuesday night into early Wednesday.

CARIBBEAN SEA...
Aside from the near gale to gale force winds forecast across the
Windward Passage region today and off the coast of Colombia the
next few days...the Caribbean basin is under the influence of dry
and stable air aloft...along with fairly tranquil conditions at
the surface. The primary feature impacting the basin is a cold
front analyzed to the N of Puerto Rico to across Hispaniola to the
northern coast of Jamaica. Isolated showers are occurring within
120 nm either side of the front...including the waters from 16N-
20N between 74W-88W. In addition...strong high pressure anchored
across the SW North Atlc and coastal SE CONUS is providing a
strengthened pressure gradient across the basin. The resulting
wind field is generating the near gale to gale force conditions
mentioned above in the Special Features section with the
remainder of the basin experiencing occasional moderate to mostly
fresh trades. The high pressure will be anchored across the SW
North Atlc region for much of the week ahead.

...HISPANIOLA...
A cold front extends across the island this afternoon bringing
isolated to widely scattered showers for much of the region
including the adjacent coastal waters. Aside from the near gale to
gale force NE winds occurring in the Windward Passage area...fresh
to strong E-NE winds are expected across the island through
Thursday.

ATLANTIC OCEAN...
A cold front extends across the central Atlc and southwestern
portions of the SW North Atlc region from 32N43W SW to 25N52W to
Hispaniola near 19N70W. A 300 nm wide band of widely scattered
showers are occurring in the vicinity of the front. Fresh to
strong N-NE winds prevail mainly S of 27N W of 55W as ridging
remains anchored across the mid-Atlc coast on a 1035 mb high
centered near Cape Hatteras North Carolina. The remainder of the
basin is under the influence of a broad surface ridge anchored by
a 1033 mb high centered N of the Madeira Islands near 37N17W.

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

$$
HUFFMAN
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