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



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634

AXPZ20 KNHC 090919

TWDEP

TROPICAL WEATHER DISCUSSION

NWS NATIONAL HURRICANE CENTER MIAMI FL

1005 UTC SUN MAR 09 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 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH

0900 UTC.

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

NO MONSOON TROUGH IS PRESENT. THE ITCZ AXIS EXTENDS FROM 03N103W

TO 06N120W TO BEYOND 04N140W. NO SIGNIFICANT CONVECTION IS NOTED.

...DISCUSSION...

A COLD FRONT CONTINUES TO PUSH EASTWARD APPROACHING THE

CALIFORNIA COAST...WEAKENING A 1023 MB SURFACE HIGH CENTERED

NEAR 32N127W. THIS IS ALLOWING WINDS TO DIMINISH ALONG THE

PERIPHERY OF THE HIGH PRES. A PAIR OF ASCAT PASS FROM 04 UTC AND

06 UTC INDICATE GENERALLY LIGHT TO MODERATE FLOW ACROSS MUCH OF

THE AREA N OF 20N W OF 110W.

THE ASCAT PASS FROM 04 UTC ALSO INDICATED THAT WINDS HAVE

STARTED TO DIMINISH OVER THE NORTHERN GULF OF CALIFORNIA. THIS

MAY BE SHORT LIVED HOWEVER. A SHARP AND AMPLIFYING UPPER TROUGH

OVER NW MEXICO IS ALLOWING A SURFACE TROUGH TO FORM OVER THE

BAJA PENINSULA TODAY...JUST AS THE HIGH PRES OVER THE GREAT

BASIN BUILDS E TO SE INTO FOUR CORNERS AREA OF THE SOUTHWEST

U.S. THIS WILL ALLOW STRONG DOWNSLOPING EASTERLY WINDS ACROSS

THE SONORAN DESERT AND INTO THE NORTHERN GULF OF CALIFORNIA.

SOME OF THIS MOMENTUM WILL PUSH THROUGH GAPS OVER THE CENTRAL

AND NORTHERN BAJA PENINSULA LATER TODAY. THE WINDS DIMINISH AS

THE HIGH PRES WEAKENS AND SHIFTS EAST OF THE SIERRA MADRE

OCCIDENTAL LATE TODAY AND TONIGHT.

A RECENT ALTIMETER PASS INDICATED SEAS BARELY REACHING 8 FT OFF

THE COAST OF BAJA CALIFORNIA SUR...THE REMNANT OF LONG PERIOD NW

SWELL LINGERING IN THE AREA OVER THE PAST COUPLE OF DAYS. A NEW

PUSH OF NW SWELL IS PUSHING INTO THE AREA. AN ALTIMETER SHOWED

SEAS TO ALMOST 13 FT NEAR 30N140W. THE NW SWELL WILL COVER THE

AREA NW OF A LINE FROM 30N125W TO 13N140W BY LATE THIS

AFTERNOON...AND FROM THE CENTRAL COAST OF THE BAJA PENINSULA TO

05N140W BY LATE MON. A STALLING FRONT WILL DRIFT EAST TODAY

BEFORE BECOMING STATIONARY FROM 30N130W TO 20N140W...ACCOMPANIED

BY FRESH TO STRONG NE FLOW NEAR THE FRONT THAT WILL DIMINISH

BELOW 20 KT THROUGH EARLY MON AS THE FRONT BECOMES A REMNANT

TROUGH FROM 30N135W TO 27N140W TUE.

OTHER PACIFIC GULF AREAS...WINDS WILL BE PRIMARILY LIGHT AND

VARIABLE DURING THE DAYLIGHT HOURS IN TEHUANTEPEC...FONSECA...

PAPAGAYO...AND PANAMA THROUGH EARLY NEXT WEEK...INCREASING TO

MODERATE TO FRESH LEVELS DURING NOCTURNAL DRAINAGE FLOW LATE

EACH NIGHT AND EARLY MORNING. SEAS WILL BE PRIMARILY 3-5 FT.

UPPER TROUGHING CONTINUES TO ENHANCE SCATTERED PULSES OF SHOWERS

AND THUNDERSTORMS OVER THE AREA FROM 10N TO 15N BETWEEN 105W AND

115W.

$$

CHRISTENSEN

Delivered by Weather Underground Inc. Sun Mar 9 2014 5:19AM EDT

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The Associated Press

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