000
AXPZ20 KNHC 302046
TWDEP 

TROPICAL WEATHER DISCUSSION    
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC WED MAY 30 2007

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

BASED ON 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
2100 UTC.

...SPECIAL FEATURES...

...HURRICANE WARNING...
.TROPICAL STORM BARBARA NEAR 13.3N 97.1W 1002 MB AT 2100 UTC MAY
30 MOVING S OR 170 DEG AT 4 KT. MAXIMUM SUSTAINED WINDS 40 KT 
GUSTS 50 KT. SEE LATEST NHC FORECAST/ADVISORY UNDER AWIPS/ WMO 
HEADERS MIATCMEP2/WTPZ22 KNHC FOR MORE DETAILS. 

TROPICAL DEPRESSION ALVIN NEAR 13.4N 115.0W 1005 MB 
AT 2100 UTC MAY 30 MOVING WNW OR 290 DEG AT 3 KT. MAXIMUM 
SUSTAINED WINDS 30 KT GUSTS 40 KT.  

...ITCZ...
ITCZ AXIS ALONG 14N92W 10N103W 7N120W  7N136W 
6N140W.  SCATTERED TO NUMEROUS MODERATE TO STRONG WITHIN 120 NM 
N OF AXIS E OF 92W.  SCATTERED MODERATE ISOLATED STRONG WITHIN 
90 NM S OF AXIS FROM 115W TO 122W.

...DISCUSSION...
UPPER LEVELS..

DEEP LAYER  TROUGH 32N136W TO 20N140W BRINGS 95 KT JET 
CORE INTO NW CORNER OF E PAC ALONG WITH ABUNDANT MOISTURE WHICH 
RACES ALONG ON W SIDE OF DOWNSTREAM RIDGE INTO SRN BAJA 
CALIFORNIA PENINSULA.  RIDGE ALOFT EXTEND N FROM CIRCULATION 
ALONG 116W ACROSS BAJA PENINSULA INTO SW U.S.  VERY DRY AIR MASS 
UNDER RIDGE FROM 16N-23N BETWEEN E OF 125W.  

LOW LEVELS...
BROAD RIDGE WITH CENTEWR N OF AREA KEEPS NE TRADES ACROSS 
THROUGH REST OF THE REGION.     

$$
WALLY BARNES