000
AXPZ20 KNHC 262124
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC TUE AUG 26 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 
2115 UTC.

...TROPICAL WAVES...

TROPICAL WAVE IS ALONG 90W N OF 5N MOVING W 15-20 KT. WHILE 
WIDESPREAD SW TO W LOW-LEVEL FLOW LIES ACROSS THE PACIFIC 
PORTION OF THE WAVE...A FAIR AMOUNT OF CYCLONIC TURNING IS 
ASSOCIATED WITH THE N PORTION OVER THE W CARIBBEAN SEA AND THE 
YUCATAN PENINSULA. LOW-LEVEL CONVERGENCE IS ENHANCING SCATTERED 
SHOWERS AND TSTMS MAINLY WITHIN 300 NM W OF THE WAVE AXIS.

...ITCZ...

ITCZ AXIS IS CENTERED ALONG 09N83W 08N100W 09N110W 13N126W 
08N140W. SCATTERED MODERATE CONVECTION WITHIN 90 NM OF AXIS 
BETWEEN 82W AND 99W. SCATTERED MODERATE TO STRONG CONVECTION IS 
WITHIN 180 NM N AND 60 NM S OF AXIS BETWEEN 122W AND 130W.

...DISCUSSION...

N OF 20N...
JULIO HAS SPUN DOWN TO A REMNANT LOW CONSISTING OF ONLY A SMALL 
SWIRL OF LOW-LEVEL CLOUDS. HOWEVER...SOME ASSOCIATED MOISTURE 
HAS SPREAD OVER NW MEXICO AND THE SW U.S. OTHERWISE...A PAIR OF 
UPPER HIGHS DOMINATE THE SUBTROPICAL EPAC. ONE IS CENTERED NEAR 
THE S PORTION OF BAJA CALIFORNIA NEAR 24N113W AND THE OTHER IS 
LOCATED N OF THE HAWAIIAN ISLANDS NEAR 30N151W. A SLIGHT 
WEAKNESS LIES BETWEEN THESE SYSTEMS ASSOCIATED WITH A WEAKENING 
TROUGH FROM S CALIFORNIA TO 27N130W. THIS PATTERN IS ENHANCING 
WIDESPREAD DRY AIR ALOFT IN THE MID AND UPPER LEVELS...EXCEPT  
NEAR THE COAST OF MEXICO WHERE SCATTERED SHOWERS ARE POSSIBLE. 
AT THE SFC...HIGH PRES 1027 MB CENTERED NEAR 37N142W DOMINATES 
THE PATTERN PRODUCING MAINLY MODERATE NE TRADES. LATEST ASCAT 
PASS DOES SHOW A SURGE OF N WINDS AND ASSOCIATED SWELL SPREADING 
TO NEAR 30N BETWEEN 120W-125W...WITH THE STRONGEST WINDS TO GALE 
FORCE OFF THE N CALIFORNIA COAST. 

S OF 20N...
FAIRLY SWIFT MID TO UPPER FLOW LIES E OF 115W ON THE S PERIPHERY 
OF RIDGING CENTERED NEAR THE S PORTION OF BAJA CALIFORNIA. THIS 
FLOW IS ADVECTING MOISTURE FROM THE TROPICS AND FROM MAINLAND 
MEXICO ENHANCING SCATTERED SHOWERS AND TSTMS WITHIN THE ITCZ. 
WHILE THE UPPER FLOW LIGHTENS W OF 115W... CONVECTION IS A BIT 
MORE ORGANIZED DUE TO A NWD PERTURBATION IN THE ITCZ ALONG 
125W...OUTLINED IN THE ITCZ SECTION ABOVE. 

$$
CANGIALOSI