AXPZ20 KNHC 210955
Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1005 UTC Thu Feb 21 2019
Tropical Weather Discussion for the eastern Pacific Ocean from
the Equator to 32N, east of 140W. The following information is
based on satellite imagery, weather observations, radar, and
Based on 0600 UTC surface analysis and satellite imagery through
...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
A weak surface trough extends from 08N81W to 02N96W to 04N110W.
The ITCZ continues from 04N110W to 02N140W. Scattered moderate
convection is from 01S to 04N between 93W and 106W, and from 06N
to 09N between 111W and 115W.
OFFSHORE WATERS WITHIN 250 NM OF MEXICO...
A ridge prevails west of Baja California to the Revillagigedo
Islands. Moderate N to NW winds and seas of 7 to 8 ft are noted
across the region. A cold front moving across the waters N of
Punta Eugenia today will support fresh to strong W to NW winds
and seas in the range of 9 to 13 ft in long period NW swell.
Strong winds off the coast of Baja California Norte are expected
to diminish tonight. However, large seas will continue to move
SE, reaching near Cabo San Lucas Sat before subsiding. Light to
gentle NW winds with seas to 4 ft will dominate across the
offshores of Baja during the weekend and early next week.
Gulf of California: Winds and seas will increase across the
northern Gulf of California through Fri morning as a cold front
moves across the area. Expect SW to W winds in the 20 to 30 kt
range ahead of the front, with fresh N winds behind the front.
Seas will build to 8 or 9 ft by early Fri. Moderate to locally
fresh winds will then dominate the gulf waters through Mon.
Gulf of Tehuantepec: The next gap wind event in the Gulf of
Tehuantepec is expected to begin by Sun afternoon as a ridge
builds across the western Gulf of Mexico. Fresh to strong winds
funneling through the isthmus of Tehuantepec will increase to
gale force on Sun night but decrease to 30 kt Mon morning.
OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND
WITHIN 750 NM OF ECUADOR...
Gulf of Papagayo: Fresh winds are forecast across the Gulf of
Papagayo for most of the forecast period, with strongest winds
mainly during the overnight and early morning hours. Seas will
build to 9 ft through Mon night.
Gulf of Panama: Gentle to moderate northerly winds are expected
across the Gulf of Panama through Mon with seas less than 5 ft.
REMAINDER OF THE AREA...
High pressure located well north-northeast of Hawaiian Islands
will move ENE and weaken during the next 24 hours. The gradient
between this ridge and broad low pressure NE of Hawaii will
tighten from 06N to 26N W of 120W. Seas generated by the winds,
combined with mixed NE and NW swell is resulting in an area of
seas of 8 to 9 ft covering most of the waters W of 120W. The
areal extent of these winds and seas will diminish today as the
gradient relaxes. Long period NW swell associated with a cold
front moving across Baja California Norte will reach the NE
waters this morning with seas of 8 to 13 ft, mainly in the area
N of 20N E of 130W.