NHC East Pacific Tropical Weather Discussion
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NHC East Pacific Tropical Weather Discussion
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AXPZ20 KNHC 010307
TWDEP
TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC WED FEB 01 2012
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
METEOROLOGICAL ANALYSIS.
BASED ON 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
0300 UTC.
...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 05N77W TO 03N81W TO 06N90W TO 04.5N95W. ITCZ
FROM 04.5N95W TO BEYOND TO 05N140W. NO SIGNIFICANT CONVECTION.
...DISCUSSION...
HIGH PRES 1025 MB IS CENTERED NEAR 33N139W WITH RIDGE EXTENDING
SE TO NEAR 26N115W. THE PRESSURE GRADIENT BETWEEN THIS AREA OF
HIGH PRESSURE AND LOWER PRESSURE IN THE VICINITY OF THE ITCZ IS
MAINTAINING FRESH TRADEWINDS FROM 07N TO 14N W OF 130W AND FROM
10N TO 15N BETWEEN 115W AND 130W. THIS AREA OF HIGH PRESSURE
WILL MAINTAIN N OF THE AREA OVER THE NEXT COUPLE OF DAYS
MAINTAINING THIS AREA OF FRESH TRADE WINDS. A FRESH ROUND OF NW
SWELL WITH 18 SECOND PERIODS ALONG THE LEADING EDGE HAS MOVED
INTO THE AREA. COMBINED SEAS WILL PEAK AT 12 FT WEDNESDAY. THE
SWELL WILL CONTINUE TO SHIFT SE WITH COMBINED SEAS 8 TO 10 FT
COVERING MUCH OF THE AREA W OF 115W BY THU AFTERNOON.
GAP WINDS...
FRESH TO STRONG TRADEWINDS OVER THE SW CARIBBEAN WATERS ARE
FUNNELING THROUGH THE GAP IN TOPOGRAPHY OVER NICARAGUA INTO THE
GULF OF PAPAGAYO. THESE WINDS WILL CONTINUE THROUGH THE NEXT
COUPLE OF DAYS. WINDS WILL PEAK DURING THE EARLY MORNING HOURS
WITH THE ADDED COMPONENT OF NOCTURNALLY DRIVEN KATABATIC WINDS.
THE FRESH WINDS ARE ALSO FLOWING ACROSS THE ISTHMUS INTO THE
GULF OF PANAMA. WINDS NEAR 20 KT WILL REMAIN OVER THIS AREA OVER
THE NEXT COUPLE OF DAYS.
A RELATIVELY DENSER AIR MASS REMAINS OVER THE GULF OF MEXICO.
THE PRESSURE GRADIENT BETWEEN THIS AIR MASS AND THE AIR MASS
OVER THE EASTERN PACIFIC WATERS IS MAINTAINING FRESH TO STRONG
NORTHERLY FLOW THROUGH THE CHIVELA PASS INTO THE GULF OF
TEHUANTEPEC. THESE WINDS WILL CONTINUE THROUGH FOR THE NEXT
COUPLE OF DAYS.
$$
AL
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