000
AXPZ20 KNHC 220913
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC FRI FEB 22 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 4N77W 6N85W TO 3N93W. ITCZ 3N93W 8N120W TO 
6N140W. SCATTERED MODERATE ISOLATED STRONG CONVECTION WITHIN 140 
NM S OF AXIS FROM 125W TO 132W.

...DISCUSSION...
AN UPPER LEVEL TROUGH ACROSS THE NORTHERN PORTION OF THE 
DISCUSSION AREA WITH AXIS FROM THE CALIFORNIA/BAJA CALIFORNIA 
BORDER TO A CYCLONIC CIRCULATION NEAR 27N140W. A WNW 105-115 KT 
JETSTREAM ENTERS THE AREA NEAR 22N140W TO 18N129W. ANOTHER JET 
WITH WINDS IN THE 105-115 KT RANGE EXTENDS FROM 25N118W ACROSS 
CENTRAL BAJA CALIFORNIA INTO NW MEXICO. ABUNDANT HIGH LEVEL 
MOISTURE IS WITHIN 600 NM S OF BOTH JETS. IN THE DEEP TROPICS AN 
UPPER LEVEL TROUGH EXTENDS FROM 15N119W TO THE EQUATOR AT 115W. 
MODERATE TO STRONG SUBSIDENCE WITH DRY STABLE AIR AT THE MIDDLE 
AND UPPER LEVELS IS ACROSS THE AREA FROM 10N-20N E OF 105W.

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 WINDS FROM 10N-20N W OF 120W. THESE CONDITIONS ARE FORECAST 
THROUGH SAT THEN DECREASE ON SUN...HOWEVER NLY SWELLS WILL 
LINGER THROUGH SUN.

ELY WINDS 20-25 KT THROUGH THE GULF OF PAPAGAYO TODAY THEN 
DECREASE SAT.

$$
DGS