000
AXPZ20 KNHC 070921
TWDEP 

TROPICAL WEATHER DISCUSSION  
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC FRI APR 07 2006

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 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY 
THROUGH 0900 UTC.

...ITCZ...
AXIS 6N77W 7N95W 5N105W 5N140W. SCATTERED MODERATE ISOLATED 
STRONG 1000 NM N OF AXIS FROM 115W TO 120W.
 
...DISCUSSION...
MID/UPPER TROUGH IS ALONG THE FAR NW CORNER OF AREA...WITH A 
120-130 KT JET STREAM FROM 24N140W TO BEYOND 32N127W. MODERATE 
TO STRONG SUBSIDENCE IS NW OF THE JET AXIS...WITH 
BROKEN/OVERCAST MID AND HIGH CLOUDINESS WITHIN ABOUT 600 NM SE 
OF THE JET. BROAD N/S RIDGE EXTENDS FROM ANTICYCLONE NEAR 
11N122W TO 32N120W. A MID/UPPER TROUGH IS MOVING INTO WESTERN 
MEXICO WITH AXIS FROM 30N107W TO 12N114W. MODERATE TO STRONG 
SUBSIDENCE IS N OF 21N BETWEEN 105W-115W. BROAD UPPER RIDGE IS E 
OF THE TROUGH AND EXTENDS FROM THE GULF OF MEXICO S TO THE 
YUCATAN PENINSULA INTO CENTRAL AMERICA. VERY DRY AIR MASS DUE TO 
MODERATE TO STRONG UPPER SUBSIDENCE COVERS THE AREA N OF 10N E 
OF 100W. 

COLD FRONT EXTENDS FROM 32N133W TO 28N140W. OVERCAST LOW CLOUDS 
ARE WITHIN 100 NM E OF FRONT...WITH SCATTERED TO BROKEN 
STRATOCUMULUS CLOUDS W OF THE FRONT. SURFACE HIGH 1023 MB IS 
CENTERED NEAR 28N124W WITH A RIDGE TO 18N106W. 

$$
DGS