000
AXPZ20 KNHC 242221
TWDEP 

TROPICAL WEATHER DISCUSSION  
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC FRI MAR 24 2006

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 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
2145 UTC.

...ITCZ...
ITCZ AXIS 4N77W 4N83W 5N104W TO THE EQUATOR AT 140W. SCATTERED 
MODERATE ISOLATED STRONG WITHIN 30 NM EITHER SIDE OF LINE 8N83W 
5N86W AND WITHIN 60 NM OF 5N92W AND 30 NM OF 5.5N102W.

...DISCUSSION...
AN UPPER LEVEL ANTICYCLONE IS CENTERED NEAR 2N147W WITH AN UPPER 
RIDGE EXTENDING NE ALONG 21N140W TO BEYOND 34N117W...AND 
SPILLING SE ACROSS THE DESERT SW OF THE CONUS. UPPER LEVEL 
MOISTURE ACCOMPANIES THE RIDGE ROUGHLY WITHIN 540 NM EITHER SIDE 
OF LINE 24N140W 30N120W AND CONTINUING NE ACROSS SOUTHERN 
CALIFORNIA.

A SHORTWAVE TROUGH EXTENDS INTO THE AREA ALONG 32N100W THROUGH 
AN UPPER CYCLONE NEAR 24N89W WITH THE TROUGH CONTINUING SW TO 
NEAR 6N124W. DRY UPPER AIR IS INDICATED WITHIN 420 NM EITHER 
SIDE OF THE TROUGH S OF 21N.

AN UPPER ANTICYCLONE IS CENTERED NEAR 8N60W WITH A RIDGE AXIS 
EXTENDING NW AND CRESTING ALONG POINTS 12N105W 22N87W 28N72W. AN 
UPPER RIDGE EXTENDS N ACROSS THE EQUATOR RIDGING ALONG POINTS 
4N123W 9N110W AND 1N102W. UPPER DIFFLUENCE UNDER THESE RIDGES IS 
ENHANCING ITCZ CONVECTION E OF 110W WITH THE RESULTANT DEBRIS 
MOISTURE EVAPORATING IN THE SAME AREA. OTHERWISE DRY UPPER AIR 
IS INDICATED S OF 20N E OF 108W. 

AT THE SURFACE A COLD FRONT LIES ALONG 32N130W 28N140W. HIGH 
PRES IS CENTERED NEAR 28N126W WITH A RIDGE EXTENDING SE TO NEAR 
10N102W AND A RIDGE SW TO BEYOND 24N140W.

CENTRAL AMERICAN GAPS...HIGH PRES OVER THE WESTERN GULF OF 
MEXICO WILL CONTINUE TO BRIDGE INTO GULF OF TEHUANTEPEC 
SUPPORTING GALE CONDITIONS THROUGH SAT NIGHT WITH NLY WINDS 
DECREASING BELOW 20 KT LATE SUN. NE WINDS AROUND 15 KT WILL 
CONTINUE IN THE GULF OF PAPAGAYO THROUGH SAT NIGHT THEN INCREASE 
20-25 KT ON SUN. MODELS INDICATING NLY WINDS WILL INCREASE TO 20 
KT IN THE GULF PANAMA LATE SUN.

$$
NELSON