000
AXPZ20 KNHC 250913
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC SAT JUL 25 2009

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

BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0900 UTC.

...TROPICAL WAVES...
TROPICAL WAVE N OF 5N ALONG 92W MOVING W 15-20 KT. SCATTERED 
CONVECTION W OF THE WAVE ALONG THE ITCZ.
 
TROPICAL WAVE N OF 4N ALONG 105W MOVING W 15-20 KT. SCATTERED 
SHOWERS ARE ALONG THE WAVE.
   
TROPICAL WAVE FROM 04N-14N ALONG 114W AND MOVING W 15 KT. 
ISOLATED SHOWERS ARE WITHIN 120 NM EITHER SIDE OF THE WAVE.

TROPICAL WAVE FROM 16N133W TO 7N138W. ISOLATED SHOWERS ARE ALONG 
THE WAVE.

...ITCZ...
AXIS IS ALONG 7N78W 10N100W 6N120W 11N140W. SCATTERED MODERATE 
TO STRONG CONVECTION WITHIN 120 NM EITHER SIDE OF AXIS FROM 
83W-86W AND WITHIN 180 NM S OF AXIS FROM 93W-97W.

...DISCUSSION...
AN UPPER LEVEL CYCLONIC CIRCULATION HAS MOVED INTO THE FAR NW
PORTION OF THE DISCUSSION AREA NEAR 32N139W. A FEW SHOWERS
ARE NEAR THE CENTER OF THE CIRCULATION WITH MID AND HIGH
LEVEL MOISTURE WITHIN 450 NM E OF THE CYCLONIC CIRCULATION.
AN UPPER LEVEL TROPICAL ANTICYCLONIC CIRCULATION IS CENTERED 
NEAR 11N138W WITH A BROAD UPPER RIDGE EXTENDING NE TO 25N126W. 
AN UPPER LEVEL CYCLONIC CIRCULATION IS CENTERED AT 18N119W.
MODERATE TO STRONG SUBSIDENCE WITH DRY STABLE AIR AT THE MIDDLE 
AND UPPER LEVELS IS WITHIN THE CIRCULATION.
 
AN UPPER ANTICYCLONE IS CENTERED OVER THE NEW MEXICO AND ARIZONA 
BORDER NEAR 34N109W WITH A RIDGE EXTENDING S ACROSS MEXICO TO 
20N105W THEN SE ACROSS SOUTHERN MEXICO TO BELIZE. UPPER LEVEL
DIFFLUENT FLOW WITH THE ANTICYCLONIC CIRCULATION AND THE UPPER
RIDGE IS ENHANCING CONVECTIVE ACTIVITY ALONG THE W COAST OF 
MEXICO S TO PANAMA.

SURFACE RIDGE WITH AXIS FROM 32N133W TO 22N120W. BROKEN/OVERCAST 
STRATOCUMULUS CLOUDS COVER THE AREA N OF 21N W OF 116W. LARGE 
SOUTHERLY SWELLS CROSSING THE EQUATOR FROM THE SOUTHERN 
HEMISPHERE CONTINUE TO MOVE THROUGH THE SE PORTION OF THE 
DISCUSSION AREA WILL SUBSIDE BY SUN.

$$
DGS