000
AXPZ20 KNHC 050012 CCA
TWDEP 

TROPICAL WEATHER DISCUSSION...CORRECTED
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC WED JUN 04 2008

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN
FROM THE EQUATOR TO 32N...EAST OF 140W. 

BASED ON 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
2145 UTC.

...TROPICAL WAVE...

A TROPICAL WAVE ALONG 82W N OF 5N IS MOVING W 10-15 KT. SCATTERED
STRONG CONVECTION IS JUST INLAND THE COAST OF COSTA RICA. ONLY
ISOLATED SHOWERS AND WEAK TSTMS ARE ELSEWHERE WITHIN 30 NM OF 
THE WAVE.

...ITCZ...

INTERTROPICAL CONVERGENCE ZONE (ITCZ) IS CENTERED ALONG 8N84W
12N97W 10N110W 7N120W 6N130W 6N140W. SCATTERED MODERATE TO 
STRONG CONVECTION IS WITHIN 120 NM N OF THE AXIS BETWEEN 
99W-104W. SCATTERED MODERATE CONVECTION IS WITHIN 120 NM S OF
THE AXIS BETWEEN 96W-102W.

...DISCUSSION...

A NARROW UPPER LEVEL TROUGH EXTENDS NW MEXICO SW TO 25N115W
...WHERE IT BECOMES A SHEAR AXIS SW THROUGH 24N120W TO 23N130W
AND TO W OF THE REGION AT 18N140W. NW OF THIS TROUGH AN UPPER 
RIDGE IS COLLAPSING SEWD FROM 32N134W TO 28N119W. UPPER LEVEL 
MOISTURE IS RIDING AROUND THE RIDGE...AND SPREADING S INTO THE
AREA TO 25N...BUT IS QUICKLY DISSIPATING AS IT HITS MODERATE
TO STRONG SUBSIDENCE AND RELATED DRY AIR BETWEEN 120W-126W.
A NEARLY STATIONARY WEAK MID/UPPER LEVEL TROUGH EXTENDS FROM 
12N133W SE TO 5N127W.
 
AN UPPER LEVEL ANTICYCLONE IS CENTERED NEAR 21N110W WITH A RIDGE 
EXTENDING NEWD ACROSS CENTRAL AND UP TO ACROSS ERN TEXAS AND
NRN PORTION OF THE MIDDLE GULF OF MEXICO. AN UPPER ANTICYCLONE 
IS OBSERVED NEAR 13N94W ON WATER VAPOR IMAGERY WITH ITS ENVELOPE 
OF ANTICYCLONIC FLOW DOMINATING THE UPPER LEVELS OF THE TROPICS 
GENERALLY E OF ABOUT 95W. ASSOCIATED UPPER DIFFLUENCE CONTINUES 
TO SUPPORT CONVECTION ALONG AND NEAR THE ITCZ BETWEEN 89W-104W. 
RESULTANT UPPER LEVEL DEBRIS MOISTURE IS SPREADING SSW FROM THE 
VICINITY OF THE ITCZ TO NEAR 02N. OTHERWISE...MODERATE 
SUBSIDENCE PREVAILING IN THE MID AND UPPER LEVELS IS CONTINUING 
TO RESULT IN ONLY ISOLATED SHOWERS AND TSTMS PRIMARILY FROM 3N
TO 9N BETWEEN 114W-128W.

AT THE SURFACE...BROAD LOW PRES REMAINS OVER MUCH OF MEXICO AND
COVERS THE ERN PACIFIC WATERS TO THE N OF 15N AND E OF 115W.
SCATTERED STRONG CONVECTION IS WITHIN 30 NM OF LINE FROM 15N93W
TO 13N94W.

HIGH PRES OF 1030 MB IS ANALYZED JUST NW OF THE REGION NEAR 
33N142W WITH A RIDGE STRETCHING SEWD THROUGH 28N134W TO 24N124W.
HIGH PRES COVERS THE AREA N OF 15N W OF 122W. A VERY TIGHT PRES 
GRADIENT CREATED DUE TO THE INTERACTION BETWEEN THE HIGH AND LOW 
PRES OVER THE WRN UNITED STATES AND NRN MEXICO IS PRODUCING NW 
WINDS OF 20-25 KT OVER THE FAR NE PART OF THE DISCUSSION AREA N 
OF 23N E OF 125W TO THE COAST OF BAJA CALIFORNIA WITH SEAS THERE 
IN THE 8-10 FT RANGE. HIGHER WIND SPEEDS REACHING TO GALE 
CONDITIONS ARE JUST N OF THIS PART OF THIS AREA.

SLY WINDS UP TO 20 KT ARE NOTED OVER THE SRN WATERS FROM 4N TO 9N
BETWEEN 91W AND 118W.

$$
AGUIRRE