000
AXPZ20 KNHC 091752
TWDEP 

TROPICAL WEATHER DISCUSSION 
NWS NATIONAL HURRICANE CENTER MIAMI FL 
1605 UTC WED MAR 09 2016

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...

A SURFACE TROUGH EXTENDS FROM 04N93W TO 03N100W TO 01N107W. THE
ITCZ AXIS EXTENDS FROM 02N109W TO 02N120W TO 02S130W TO BEYOND
03S139W. SCATTERED MODERATE CONVECTION IS FROM 04N TO 09W
BETWEEN 90W AND 95W...AND FROM 03S TO 03N W OF 134W TO BEYOND
140W. 

...DISCUSSION...

A STRONG MID TO UPPER TROUGH IS MOVING EASTWARD OVER WESTERN
MEXICO AND THE SW U.S. SUPPORTING A DISSIPATING COLD FRONT THAT
EXTENDS FROM COASTAL MEXICO NEAR 20N105.5W TO 15N113W. SCATTERED
SHOWERS AND POSSIBLE ISOLATED THUNDERSTORMS ARE S OF THE FRONT
TO 13N E OF 102W TO THE COAST OF MEXICO. SEAS TO 16 FT CONTINUE
N OF THE FRONT WITH NW WINDS TO 25 KT MAINLY E OF 120W OUTSIDE
OF THE GULF OF CALIFORNIA. WINDS TO 20 KT S OF 28N OVER THE GULF
OF CALIFORNIA SUPPORT SEAS TO 8 FT. CONDITIONS WILL GRADUALLY
IMPROVE OVER THIS REGION OVER THE NEXT 24 TO 36 HOURS AS THE
FRONT COMPLETELY DISSIPATES AND THE SURFACE PRESSURE GRADIENT
WEAKENS. BY THU AFTERNOON SEAS WILL HAVE SUBSIDED BELOW 10 FT W
OF 125 W OUTSIDE THE GULF OF CALIFORNIA. SEAS WILL SUBSIDE BELOW
5 FT OVER THE GULF OF CALIFORNIA. 

TO THE NW OF THE ABOVE FRONT...A 1022 MB HIGH PRESSURE CENTER IS
LOCATED NEAR 29N126W AND EXTENDS A BROAD RIDGE SE TO NEAR
110N110W AND W-SW TO BEYOND 21N140W. THE PRESSURE GRADIENT TO
THE S OF THE RIDGE IS SUFFICIENT TO CONTINUE TO PRODUCE FRESH NE
TO E TRADE WINDS GENERALLY FROM 08N TO 21N W OF 117W. SEAS ARE
GENERALLY 9 TO 11 FT ACROSS THIS AREA IN PREDOMINANTLY NW SWELL.
THE HIGH WILL SHIFT SLOWLY E AND WEAKEN OVER THE NEXT 48
HOURS...REDUCING THE PRESSURE GRADIENT...THUS DECREASING THE
WINDS TO MODERATE TO FRESH WITH SEAS SLOWLY SUBSIDING BELOW 8
FT. 

A NEW COLD FRONT EMERGING OVER THE NW CORNER OF THE AREA THIS
AFTERNOON WILL REACH FROM 30N135W TO 26N140W BY THIS EVENING.
FRESH TO STRONG S TO SW WINDS ARE E OF THIS FRONT WITH SEAS
BUILDING TO 8 TO 12 FT. THIS FRONT WILL MOVE EAST TO 30N130W TO
21N140W BY THU EVENING WHILE WEAKENING. MEANWHILE...A
REINFORCING FRONT WILL MOVE ACROSS 30N140W THU AND WILL MERGE
WITH THE WEAKENING COLD FRONT ON FRI. FRESH TO STRONG NW WINDS
AND SWELL TO 16 FT WILL ACCOMPANY THIS REINFORCING FRONT. 

$$
LATTO