000
AXPZ20 KNHC 281508
TWDEP 

TROPICAL WEATHER DISCUSSION    
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC WED MAR 28 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 6N78W 8N100W 6N120W 4N140W. 
SCATTERED MODERATE TO STRONG CONVECTION WITHIN 75 NM EITHER SIDE 
OF AXIS FROM 111W TO 125W.

...DISCUSSION...
MID/UPPER LEVEL RIDGE IS OVER THE W PORTION OF THE DISCUSSION 
AREA WITH AXIS ALONG 135W. ANTICYCLONIC FLOW COVER THE AREA W OF 
125W. OTHER THEN SOME HIGH CLOUDS FROM 21N-27N W OF 130W...
MODERATE TO STRONG SUBSIDENCE AND DRY AIR EXTENDS FROM 10N-27N W 
OF 120W. A STRONG MID/UPPER LEVEL CYCLONIC CIRCULATION OVER THE 
SW U.S. WITH TROUGH WITH TROUGH FROM THE CIRCULATION ACROSS THE 
GULF OF CALIFORNIA TO 20N112W. A 95-110 KT UPPER LEVEL JET 
PLUNGES DOWN THE CALIFORNIA COAST TO THE NORTHERN BAJA PENINSULA 
THEN TURNS NE INTO ARIZONA AND NEW MEXICO. 

AN UPPER LEVEL ANTICYCLONIC CIRCULATION IS CENTERED OFF THE W 
COAST OF COSTA RICA NEAR 8N85W WITH RIDGE N ACROSS CENTRAL 
AMERICA TO THE YUCATAN PENINSULA AND INTO THE GULF OF MEXICO. 
EXCEPT FOR SOME HIGH CLOUDS THE AIR IS MOSTLY DRY N OF THE ITCZ 
E OF 105W.

SURFACE RIDGE WITH AXIS FROM 32N130W TO 15N115W. BROKEN TO 
OVERCAST STRATUS AND STRATOCUMULUS CLOUDS WITHIN THE RIDGE N OF 
15N W OF 115W.

$$
DGS