000
AXPZ20 KNHC 190329
TWDEP 

TROPICAL WEATHER DISCUSSION 
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC TUE MAR 18 2008

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

BASED ON 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0245 UTC.

...ITCZ...

ITCZ AXIS IS ALONG THE LINE...1N81W 2N90W 3N100W 4N110W 4N120W
5N122W 2N140W. SCATTERED MODERATE/ISOLATED STRONG CONVECTION IS 
WITHIN 180 NM N OF THE AXIS BETWEEN 116W-119W...AND WITHIN 120 
NM N OF THE AXIS BETWEEN 126W-129W. SCATTERED MODERATE CONVECTION
IS WITHIN 120 NM N OF THE AXIS BETWEEN 87W-90W AND ALSO BETWEEN 
110W-113W.

...DISCUSSION...

UPPER LEVELS...
STRONG SHORTWAVE IS OVER MEXICO APPROACHING THE RIO GRANDE 
VALLEY. MULTI LEVEL CLOUDS ARE N OF 27N E OF 108W MOVING E.
A LARGE AREA OF DRY AND CLOUD FREE MIDDLE AND UPPER LEVELS IS 
ELSEWHERE EAST OF 135W AND NORTH OF A LINE 23N135W 15N120W 
17N110W 23N100W. THIS AREA IS ESSENTIALLY A WEAK MAINLY UPPER 
LEVEL TROUGH TRAILING BEHIND THE STRONG SHORTWAVE.  

A MID/UPPER LEVEL RIDGE IS AMPLIFYING OVER THE WRN PORTION OF
THE AREA FROM 14N130W NW THROUGH 22N136W TO NW OF THE REGION AT
26N140W. MID/UPPER LEVEL MOISTURE IS STREAMING INTO THE REGION 
UP OVER THE RIDGE AND REACHES TO NEAR 130W.

ELSEWHERE BROAD ANTICYCLONIC FLOW COVERS THE REGION W OF ABOUT
120W. AN AREA OF UPPER MOISTURE AND MULTI LEVEL CLOUDS WITH SOME 
EMBEDDED CONVECTION IS EMANATING FROM THE ITCZ E OF A LINE FROM 
THE ITCZ NEAR 120W TO 15N105W TO EXTREME SE TEXAS TO W OF 95W.

SURFACE...A NEARLY STATIONARY 1032 MB HIGH IS N OF THE AREA NEAR 
33N140W WITH A RIDGE SE THROUGH 28N128W TO 24N121W AND TO NEAR 
21N112W. HIGH PRES COVERS THE AREA N OF 13N W OF 107W. A STRONG 
STRONG 996 MB LOW...A REFLECTION OF THE SHORTWAVE TROUGH...IS 
OVER SRN TEXAS WITH A COLD FRONT SSW TO NEAR ACAPULCO MEXICO.

GAP WINDS IN THE GULF OF PAPAGAYO REGION ARE NE 20 KT...AND ARE 
FORECAST TO INCREASE TO 20-25 KT IN ABOUT 36-48 HRS.

GAP WINDS WILL BEGIN IN THE GULF OF TEHUANTEPEC WED AFTERNOON 
AND INCREASE TO GALE FORCE WEDNESDAY NIGHT AND CONTINUE INTO 
FRI MORNING.

$$
AGUIRRE