000
AXPZ20 KNHC 050904
TWDEP 

TROPICAL WEATHER DISCUSSION                                    
NWS NATIONAL HURRICANE CENTER MIAMI FL                         
1005 UTC FRI SEP 05 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 05 HURRICANE NORBERT WAS NEAR 22.5N 111.4W WITH 
ESTIMATED MINIMUM SEA LEVEL PRESSURE OF 970 MB. NORBERT WAS 
MOVING N-NW OR 330 DEG AT 7 KT WITH MAXIMUM SUSTAINED WINDS OF 
80 KT WITH GUSTS OF 100 KT. NUMEROUS MODERATE TO STRONG 
CONVECTION WAS NOTED WITHIN 120 NM OF THE CENTER OF NORBERT. 
NORBERT IS EXPECTED TO MOVE NEARLY PARALLEL TO THE PACIFIC COAST 
OF THE BAJA CALIFORNIA PENINSULA OVER THE NEXT SEVERAL DAYS. 
PLEASE SEE THE 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. 

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... 
             
THE MONSOON TROUGH EXTENDS FROM 09N83W TO 08N100W TO 10N105W. IT 
CONTINUES FROM 12N125W TO 08N140W. SCATTERED MODERATE ISOLATED 
STRONG CONVECTION WAS NOTED WITHIN 120 NM S OF THE MONSOON 
TROUGH BETWEEN 91W AND 94W. SCATTERED MODERATE ISOLATED STRONG 
CONVECTION WAS NOTED WITHIN 120 NM OF THE MONSOON TROUGH BETWEEN 
98W AND 104W. 

...DISCUSSION...

TROPICAL MOISTURE ON THE EASTERN SIDE OF HURRICANE NORBERT IS 
MAKING ITS WAY INTO THE NORTHERN SIERRA MADRE OCCIDENTAL AND THE 
SOUTHWESTERN U.S. WHERE IT WILL 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 IN THESE AREAS FOR 
MORE DETAILS.

ASIDE FROM HURRICANE NORBERT...THE PRESSURE GRADIENT OVER THE 
FORECAST AREA IS ONLY CAPABLE OF SUPPORTING WINDS IN THE 10 TO 
15 KT RANGE. CROSS-EQUATORIAL SW SWELL NEAR 8 FT IS OVER THE FAR 
SOUTHERN WATERS S OF 04N BETWEEN 115W AND 125W. SEAS ASSOCIATED 
WITH THIS CROSS EQUATORIAL SWELL WILL SUBSIDE BELOW 8 FT TODAY. 
ELSEWHERE OUTSIDE OF THE SEAS GENERATED BY NORBERT AND THE CROSS 
EQUATORIAL SWELL...SEAS WILL GENERALLY BE IN THE 5-7 FT RANGE 
OVER MUCH OF THE FORECAST AREA.  

$$
AL