000
AXPZ20 KNHC 250925
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC MON FEB 25 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 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0900 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH ALONG 6N78W 7N85W TO 6N93W. ITCZ FROM 6N93W TO 
3N105W TO 7N140W. NO SIGNIFICANT CONVECTION.

...DISCUSSION...
UPPER LEVEL TROUGH ACROSS THE FAR  NW PORTION OF THE DISCUSSION 
WITH AXIS FROM 32N131W TO 27N140W. A BROAD FLAT UPPER LEVEL 
RIDGE E OF THE TROUGH IS N OF 20N BETWEEN 115W AND 130W. A WLY 
95-105 KT JETSTREAM ENTERS THE AREA NEAR 20N140W TO 25N132W 
WHERE WINDS INCREASE TO 115-125 KT THEN ACROSS CENTRAL BAJA 
CALIFORNIA INTO MEXICO WHERE WINDS FURTHER INCREASE TO 140-150 
KT. DENSE MIDDLE AND HIGH CLOUDS ARE WITHIN 500 NM S OF THE JET 
W OF 115W. IN THE DEEP TROPICS AN UPPER LEVEL ANTICYCLONIC 
CIRCULATION IS CENTERED NEAR 7N112W. AN UPPER LEVEL TROUGH 
EXTENDS FROM 15N97W TO THE EQUATOR AT 97W. MODERATE TO STRONG 
SUBSIDENCE WITH DRY STABLE AIR AT THE MIDDLE AND UPPER LEVELS IS 
ACROSS THE AREA FROM 5N-20N E OF 105W.

THE PRES GRADIENT HAS TIGHTENED ACROSS NORTHERN MEXICO RESULTING 
IN GALE FORCE WINDS IN THE GULF OF CALIFORNIA FROM 25N-28N. 
WINDS ARE FORECAST TO DECREASE TO BELOW GALE FORCE TONIGHT AND 
LESS THAN 20 KT TUE.

SURFACE HIGH PRES RIDGE IS N OF 15N W OF 115W. THE PRES GRADIENT 
AROUND THE SOUTHERN PERIPHERY OF THE RIDGE IS SUPPORTING 20-25 
KT ELY WINDS FROM 9N-15N W OF 130W. THESE CONDITIONS ARE 
FORECAST THROUGH TUE THEN DECREASE WED...HOWEVER LARGE NLY 
SWELLS WILL LINGER THROUGH WED.

$$
DGS