000
AXPZ20 KNHC 291509
TWDEP 

TROPICAL WEATHER DISCUSSION    
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC THU MAR 29 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 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
1500 UTC.

...ITCZ...

ITCZ AXIS IS CENTERED ALONG 2N79W 5N95W 3N115W 4N140W. SCATTERED 
MODERATE ISOLATED STRONG WITHIN 90 NM N OF AXIS FROM 133W TO 
140W.

...DISCUSSION...
MID/UPPER LEVEL RIDGE AXIS IS ALIGNED ALONG 130W 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 LOCATED FROM 10N-25N BETWEEN 
120W-130W AND N OF 12N BETWEEN 120W-105W. 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 75-95 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.

SURFACE RIDGE WITH AXIS FROM 32N132W TO 17N110W. BROKEN TO 
OVERCAST STRATOCUMULUS CLOUDS WITHIN THE RIDGE FROM 15N-28N W OF 
120W. A 1008 MB LOW IS ALONG THE SOUTHERN END OF A COLD FRONT IN 
NORTHERN MEXICO ALONG THE BIG BEND OF TEXAS WITH A TROUGH S TO 
21N102W. NO SIGNIFICANT WEATHER ASSOCIATED WITH THE LOW AND 
TROUGH AS THE AIRMASS IS VERY DRY.

$$
DGS