000
AXPZ20 KNHC 300342
TWDEP 

TROPICAL WEATHER DISCUSSION    
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC FRI MAR 30 2007

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 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0345 UTC.

...ITCZ...

ITCZ AXIS IS CENTERED ALONG 2N78W 6N90W 6N100W 5N110W 5N120W
3N130W 4N140W. NO SIGNIFICANT CONVECTION IS NOTED.

...DISCUSSION...

MID/UPPER LEVEL RIDGE AXIS IS ALIGNED ALONG 128W WITH A FEW 
CIRRUS CLOUDS MOVING NE ON THE SW FLOW W OF THE RIDGE AXIS.
MODERATE TO STRONG SUBSIDENCE...WITH DRY AIR AT THE MID AND 
UPPER LEVELS OF THE ATMOSPHERE IS NOTED N OF 8N E OF 128W...
AND ALSO N OF 20N W OF 130W. A LARGE AND MID/UPPER LOW CENTERED 
OVER THE FOUR CORNERS REGION OF THE UNITED STATES WITH TROUGH 
EXTENDING SWD INTO WESTERN MEXICO TO NEAR MANZANILLO. A 70-95 KT 
WIND MAX IS AT THE BASE OF THE LOW FROM THE CENTRAL BAJA 
PENINSULA ACROSS NORTHERN MEXICO TO THE BIG BEND OF TEXAS...THE 
SUBSIDENCE AND LACK OF LOW-LEVEL MOISTURE IS KEEPING SKIES 
CLOUD-FREE UP AND DOWN THE MEXICAN COAST. MID/UPPER LEVEL RIDGE 
EXTENDS FROM COLOMBIA NW TOWARD CENTRAL AMERICA THEN NWD ACROSS 
THE YUCATAN PENINSULA INTO THE GULF OF MEXICO.

RIDGE AXIS EXTENDS INTO THE DISCUSSION AREA THROUGH 32N128W 
25N120W TO 19N112W. THE ASSOCIATED HIGH CENTER OF 1028 MB IS 
N OF THE AREA NEAR 36N131W. BROKEN TO OVERCAST STRATOCUMULUS 
CLOUDS WITH POSSIBLE ISOLATED SHOWERS ARE MOVING WWD N OF 15N W 
OF 133W...AND FROM 16N-27N BETWEEN 123W-133W. A 1004 MB LOW IS 
OVER NRN MEXICO NEAR 27N104W...AND IS ASSOCIATED WITH AN AREA OF 
BROAD LOW PRES OVER MUCH OF NRN AND CENTRAL MEXICO. THE 
INTERACTION BETWEEN THIS AREA OF LOW PRES AND THE RIDGE OVER THE 
E PORTION OF THE PACIFIC IS RESULTING IN NWLY WINDS TO 20 KT 
ACROSS THE SRN PORTION OF THE GULF OF CALIFORNIA. THESE 
WINDS...HOWEVER ARE EXPECTED TO DIMINISH TO LESS THAN 20 KT IN 
ABOUT 48 HOURS AS THE HIGH CENTER WEAKENS AND MOVES SWD.

$$
AGUIRRE