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KF5JRV > WX 09.10.17 13:23l 112 Lines 4559 Bytes #999 (0) @ NA
BID : 5547_KF5JRV
Read: GUEST
Subj: NWS NHC Atlantic Tropical WX 10/9
Path: IW8PGT<CX2SA<XE1FH<N9PMO<NS2B<KF5JRV
Sent: 171009/1116Z 5547@KF5JRV.#NWAR.AR.USA.NA BPQK6.0.14
000
AXNT20 KNHC 091110
TWDAT
Tropical Weather Discussion
NWS National Hurricane Center Miami FL
710 AM EDT Mon Oct 9 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 0600 UTC surface analysis and satellite imagery through
1030 UTC.
...SPECIAL FEATURES...
Tropical Depresion Seventeen formed at 0900 UTC near 31.1N 39.9W
and is moving N at 3 kt. Maximum sustained winds are 30 kt with
gusts to 40 kt. Minimum central pressure is 1008 mb. Scattered
moderate convection and isolated thunderstorms are within 405 nm
NE quadrant of the depression center. The depression is forecast
to turn to the east and east-southeast tonight and Tuesday. See
latest NHC forecast/advisory under AWIPS/WMO headers
MIATCPAT2/WTNT32 KNHC for more details.
...GALE WARNING...
A tropical wave is in the central Atlc with axis extending from
18N47W to 07N48W, moving W at 10 kt. The wave is in a region of
mainly strong vertical wind shear N of 15N and some dry air
intrusion to its environment is observed in both CIRA LPW and SSMI
TPW imagery. This is limiting convection to scattered moderate
from 11N-17N between 46W-50W. Latest scatterometer data shows gale
force winds associated with this wave from 14N-16N between 44W-
48W.
...TROPICAL WAVES...
A tropical wave is in the E Atlc with axis extending from 13N22W
to 02N23W, moving W at 5 kt. Satellite derived data indicate the
wave is in a low to moderate vertical shear region. However, both
CIRA LPW and SSMI TPW imagery show patches of dry air in the wave
environment, which is limiting the convection to isolated showers
from 04N-13N E of 25W.
A tropical wave is in the central Atlc with axis extending from
18N56W to 09N57W, moving west at 5 kt. The wave is in a region of
mainly moderate to strong vertical wind shear. Shallow moisture
in the wave environment along with upper level diffluence support
scattered moderate convection from 12N-19N between 51W-57W.
...ITCZ/MONSOON TROUGH...
The monsoon trough extends from the African coast near 10N14W to
10N23W to 06N37W. The ITCZ extends from 06N37W to 06N48W. Besides
the convection associated with the tropical waves, scattered moderate
convection is from 02N-12N between 25W-41W associated with a 1010
mb low pressure located near 06N33W.
...DISCUSSION...
GULF OF MEXICO...
Shallow moisture and upper level diffluent flow support isolated showers
and tstms over the SE Gulf. Otherwise, gentle to moderate
southerly flow dominates the Gulf waters ahead of a cold front
forecast to come off the coast of Texas Tuesday evening.
CARIBBEAN SEA...
Isolated showers and tstms are in Central America associated with
the eastern extension of the Pacific monsoon trough, except for
numerous strong convection within 60 nm off the coast of southern
Panama and NW Colombia. A middle level trough and upper level
diffluent flow support scattered to isolated showers across
Hispaniola and Puerto Rico. Showers over Hispaniola are being
enhanced by a surface trough extending from the SW N Atlc waters
to the western island, which have been nearly stationary the last
couple of days. A tropical wave is forecast to move into the E
Caribbean later today, thus increasing the chances for more
showers to Puerto Rico. A second wave is forecast to enter the
basin Tuesday night.
...HISPANIOLA...
A middle level trough and upper level diffluent flow support
scattered to isolated showers across Hispaniola. These showers are
being enhanced by a surface trough extending from the SW N Atlc
waters to the western island, which has been nearly stationary
during the last couple of days. Continuation of showers expected
through early Tuesday morning.
ATLANTIC OCEAN...
The main feature in the basin is Tropical Depression Seventeen.
See special features for details. Three tropical waves are moving
across the basin. See the waves section above for details. A
surface trough, which has been nearly stationary the last 24
hours, extends from 23N73W to 19N72W with isolated showers within
15 nm either side of its axis. Otherwise, a middle to upper level
low centered near 25N63W support scattered showers and tstms from
20N-28N between 54W-65W. Surface ridging prevails elsewhere.
For additional information please visit
http://www.hurricanes.gov/marine
$$
Ramos
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