000
AXPZ20 KNHC 021531
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC TUE APR 02 2013

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.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... 
MONSOON TROUGH 8N82W 1N95W TO 2N99W. ITCZ 2N99W 5N115W 4N131W
TO 02N140W. SCATTERED STRONG WITHIN 200 NM S OF AXIS FROM
82W-86W AND WITHIN 100 NM N OF AXIS FROM 88W-91W AND WITHIN
150 NM N OF AXIS FROM 125W-137W.

...DISCUSSION... 
BROAD UPPER LEVEL RIDGE IS N OF 15N W OF 120W. AN UPPER LEVEL
CYCLONIC CIRCULATION AND ASSOCIATED SURFACE COLD FRONT IS JUST
W OF THE AREA...HOWEVER SOME SCATTERED SHOWERS AND TSTMS ARE
ACROSS THE FAR NW PORTION OF THE DISCUSSION AREA N OF 22N W
OF 135W. A 70-95 KT JETSTREAM ENTERS THE AREA AT 17N140W TO 
24N133W. DENSE MID TO UPPER LEVEL CLOUDS ARE WITHIN 400 NM S
OF THE JETSTREAM. AN UPPER LEVEL TROUGH EXTENDS FROM THE SW
U.S. ACROSS THE GULF OF CALIFORNIA TO 2N110W.

SURFACE HIGH PRES CENTER AT 30N124 REMAINS NEARLY STATIONARY
AS WEAKENING COLD FRONT APPROACHES THE DISCUSSION AND IS
DEFLECTED NE BY HIGH PRES RIDGE. SLY WINDS BETWEEN THE RIDGE
AND THE FRONT HAVE INCREASED TO 20 KT WITH SEAS TO 12 FT IN NW
SWELL. TRADE WINDS ALONG THE SOUTHERN PERIPHERY OF THE HIGH
ARE 20 KT S OF 20N W OF 115W AND ARE EXPECTIED TO CONTINUE
THORUGH THU.

THE PRES GRADIENT BETWEEN THE HIGH AND LOWER PRES OVER
MEXICO IS PRODUCING NW WINDS 20-25 KT WITHIN 120 NM OF
THE COAST OF BAJA CALIFORNIA.
 
$$
DGS