000
AXPZ20 KNHC 180934
TWDEP 

TROPICAL WEATHER DISCUSSION 
NWS NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC MON JUN 18 2012

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.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 17N109W TO 1010 MB LOW PRES NEAR 12N119W TO 
03N140W. SCATTERED MODERATE TO STRONG WITHIN 180 NM S OF AXIS 
FROM 113W-116W AND WITHIN 40 NM N AND 120 NM S OF AXIS FROM 
119W-123W.

...DISCUSSION...
UPPER LEVEL TROUGH EXTENDS FROM 32N125W TO CYCLONIC CIRCULATION 
NEAR 24N131W TO 18N138W. AN 95-105 KT NLY JETSTREAM NW OF TROUGH 
AXIS FROM 32N129W TO 24N134W...WITH A 75 KT SLY JET SE OF THE 
TROUGH FROM 22N129W TO 32N122W. UPPER LEVEL ANTICYCLONIC 
CIRCULATION OFF THE SOUTHERN TIP OF BAJA CALIFORNIA NEAR 21N110W 
WITH RIDGE N ACROSS THE GULF OF CALIFORNA. EXCEPT FOR SOME HIGH 
CLOUDS ALONG THE NLY JET STREAM STRONG SUBSIDENCE WITH DRY 
STABLE AIR AT THE MIDDLE AND UPPER LEVELS IS N OF 20N W OF 110W 
AND FROM 10N TO 20N W OF 125W.

THE PRES GRADIENT BETWEEN HIGH PRES N OF THE AREA AND A 1011 MB 
LOW PRES NEAR 27N127W IS PRODUCING NLY WINDS 20 TO 25 KT NW OF A 
LINE 30N130W TO 17N140W.

SURFACE LOW PRES CENTER 1006 MB NEAR 17N108W WITH SW WINDS 20-25 
KT WITHIN 300 NM SE SEMICIRCLE. THE LOW COULD POSSIBLY DEVELOP 
INTO A TROPICAL CYCLONE. SCATTERED STRONG CONVETION IS WITHIN 
150 NM E OF THE LOW.

ANOTHER LOW 1010 MB IS NEAR 11N119W. SW WINDS 20-25 KT ARE ALSO 
WITHIN 300 NM SE SEMICIRCLE OF THE LOW.

$$
DGS