000
AXPZ20 KNHC 070916
TWDEP 

TROPICAL WEATHER DISCUSSION  
NWS NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC THU FEB 07 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 8N85W TO 7N97W. ITCZ FROM 7N97W 8N105W TO 
6N140W. NO SIGNIFICANT CONVECTION.

...DISCUSSION...
BROAD FLAT UPPER LEVEL RIDGE ACROSS THE WESTERN PORTION OF THE 
DISCUSSION AREA W OF AROUND 130W...WITH MOSTLY ZONAL WLY FLOW N 
OF 20N. A 95-115 KT JETSTREAM WITH AXIS FROM 26N140W TO CENTRAL 
BAJA CALIFORNIA INTO NORTHERN MEXICO. AN UPPER LEVEL TROUGH FROM 
THE TIP OF THE BAJA PENINSULA SW TO 6N115W.  SOME UPPER LEVEL 
NEAR THE UPPER LEVEL TROUGH OTHERWISE STRONG SUBSIDENCE WITH DRY 
AND STABLE AT THE MIDDLE AND UPPER LEVELS IS ACROSS THE REST OF 
THE DISCUSSION AREA. THE SUBSIDENCE HAS SUPPRESSED CONVECTION 
ALONG THE ITCZ AND MONSOON TROUGH. A WEAKENING TROUGH IN THE 
DEEP TROPICS WITH AXIS FROM 10N100W TO THE GALAPAGOS ISLAND. 
MOSTLY CLEAR SKIES WITHIN 500 NM OF THE COASTS FROM NICARAGUA 
THROUGH MEXICO...OTHERWISE STRATIFIED LOW CLOUDS ACROSS MOST OF  
THE AREA.

SURFACE HIGH PRES RIDGE DOMINATES THE AREA N OF 14N W OF 112W.
NW SWELLS TO 12 FT CONTINUE N OF 15N W OF 120W. THE SWELLS WILL 
SPREAD TO SE OVER THE NEXT 48 HOURS.

$$
DGS