000
AXPZ20 KNHC 060901
TWDEP 

TROPICAL WEATHER DISCUSSION                                    
NWS NATIONAL HURRICANE CENTER MIAMI FL                         
1005 UTC SAT SEP 06 2014

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.

...SPECIAL FEATURE...

AT 0900 UTC SEP 6 HURRICANE NORBERT WAS CENTERED NEAR 24.6N 
113.4W WITH ESTIMATED MINIMUM SEA LEVEL PRESSURE OF 957 MB. 
NORBERT WAS MOVING NW OR 315 DEG AT 7 KT WITH MAXIMUM SUSTAINED 
WINDS OF 105 KT WITH GUSTS TO 130 KT. NUMEROUS MODERATE TO 
STRONG CONVECTION WAS NOTED WITHIN 60 NM N AND 120 NM S 
SEMICIRCLES OF THE CENTER OF NORBERT. THE SYSTEM IS EXPECTED TO 
WEAKEN AS IT MOVES NEARLY PARALLEL TO THE PACIFIC COAST OF THE 
BAJA CALIFORNIA PENINSULA THIS WEEKEND. PLEASE SEE LATEST NHC 
INTERMEDIATE PUBLIC ADVISORY UNDER AWIPS/ WMO HEADERS 
MIATCPEP4/WTPZ34 KNHC AND THE FULL FORECAST/ADVISORY UNDER 
AWIPS/WMO HEADERS MIATCMEP4/WTPZ245 KNHC FOR MORE DETAILS. 

...TROPICAL WAVES...

TROPICAL WAVE AXIS IS NEAR 99W/100W N OF 10N MOVING W AT 15 KT. 
ISOLATED MODERATE CONVECTION IS NOTED IN THE VICINITY OF THE 
MONSOON TROUGH WHERE THE WAVE AND MONSOON TROUGH ARE INTERACTING.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... 
             
THE MONSOON TROUGH EXTENDS FROM 08N83W TO 10N108W TO 13N123W TO 
11N129W WHERE LOW LEVEL WINDS SUGGEST A TRANSITION TO ITCZ WHICH 
EXTENDS TO BEYOND 10N140W. SCATTERED MODERATE ISOLATED STRONG 
CONVECTION WAS NOTED WITHIN 210 NM N AND 240 NM S OF TROUGH 
BETWEEN 86W AND 93W. SCATTERED MODERATE ISOLATED STRONG 
CONVECTION WAS NOTED WITHIN 180 NM S OF TROUGH BETWEEN 94W AND 
100W. SCATTERED MODERATE CONVECTION WAS NOTED WITHIN 60 NM N AND 
30 NM S OF TROUGH BETWEEN 115W AND 120W.

...DISCUSSION...

TROPICAL MOISTURE ON THE EASTERN SIDE OF HURRICANE NORBERT IS 
MOVING ACROSS THE NORTHERN SIERRA MADRE OCCIDENTAL INTO THE 
SOUTHWESTERN U.S. WHERE THIS ABUNDANT MOISTURE WILL HELP TRIGGER 
AFTERNOON AND EVENING THUNDERSTORMS. THESE THUNDERSTORMS COULD 
BRING HEAVY RAIN AND FLASH FLOODING TO THESE AREAS OVER THE NEXT 
FEW DAYS. PLEASE REFER TO YOUR LOCAL WEATHER FORECAST OFFICE FOR 
MORE DETAILS.
 
ASIDE FROM HURRICANE NORBERT...THE WEAK PRESSURE GRADIENT IS 
SUPPORTING GENTLE TO MODERATE WINDS ACROSS THE FORECAST AREA. 
SEAS ARE GENERALLY IN THE 5-7 FT RANGE OVER MUCH OF THE FORECAST 
AREA. 

$$
AL