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AP-NW--KNHC-NW Tropical Weather Discussion, NW



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000

AXPZ20 KNHC 150236

TWDEP

TROPICAL WEATHER DISCUSSION

NWS NATIONAL HURRICANE CENTER MIAMI FL

0405 UTC TUE APR 15 2014

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

0230 UTC.

...SPECIAL FEATURE...

GULF OF TEHUANTEPEC STORM WARNING

WINDS OVER THE GULF OF TEHUANTEPEC WILL REMAIN FAIRLY LIGHT

THROUGH TUESDAY MORNING. A COLD FRONT IN THE NW GULF OF MEXICO

WILL REACH THE BAY OF CAMPECHE TUE. WINDS WILL RAPIDLY

INCREASING TO GALE FORCE OVER THE GULF OF TEHUANTEPEC TUE

AFTERNOON. WINDS ASSOCIATED WITH THIS GAP WIND ARE EXPECTED TO

REACH EITHER STRONG GALE FORCE OR EVEN MINIMAL STORM FORCE BY

TUE EVENING. THIS IS EXPECTED TO BE A SHORT LIVED...BUT

STRONG...GAP WIND EVENT WITH STRONG GALE FORCE WINDS...AND

POSSIBLY A BRIEF PERIOD OF STORM FORCE WINDS...EXPECTED TUE

NIGHT INTO WED MORNING. WINDS ARE THEN EXPECTED TO DIMINISH

BELOW GALE FORCE BY WED AFTERNOON...AND DIMINISH FURTHER TO 20

KT OR LESS WED EVENING.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

THE MONSOON TROUGH EXTENDS FROM 08.5N84W TO 06.5N98W WHERE LOW

LEVEL WINDS SUGGEST A TRANSITION TO ITCZ WHICH EXTENDS TO

06N135W TO BEYOND 04N140W. SCATTERED MODERATE ISOLATED STRONG

CONVECTION WAS NOTED WITHIN 90 NM N AND 120 NM S OF TROUGH

BETWEEN 86W AND 93W.

...DISCUSSION...

A SURFACE RIDGE EXTENDS INTO THE AREA FROM 30N132W TO 18N110W.

THE PRESSURE GRADIENT BETWEEN THE RIDGE AND LOWER PRESSURE IN

THE VICINITY OF THE ITCZ IS MAINTAINING MODERATE TO LOCALLY

FRESH TRADES N OF THE ITCZ TO 20N AND W OF 130W. LATEST

ALTIMETER PASS DEPICTS SEAS TO 8 FT OVER THIS AREA. THE WEAK

RIDGE WILL CONTINUE OVER THE AREA TO MAINTAIN MODERATE TO FRESH

TRADEWINDS WITH SEAS TO 8 FT OVER MUCH OF THIS AREA. THE RIDGE

WILL STRENGTHEN SLIGHTLY...AND OCCASIONAL WINDS TO 25 KT WILL BE

POSSIBLE.

GULF OF CALIFORNIA...HIGH PRESSURE OVER THE GREAT BASIN WILL

ALLOW FOR STRONG NW WINDS TO FUNNEL INTO THE NORTHERN GULF OF

CALIFORNIA TONIGHT. THE AREA OF HIGH PRESSURE WILL SHIFT EAST ON

TUESDAY WHICH WILL LOOSEN THE PRESSURE GRADIENT AND DIMINISH

WINDS BELOW 25 KT BY TUE AFTERNOON.

$$

AL

Delivered by Weather Underground Inc. Mon Apr 14 2014 10:37PM EDT

Copyright © The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

The Associated Press

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