000
AXPZ20 KNHC 222158
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC TUE JUL 22 2008

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM 
THE EQUATOR TO 32N...EAST OF 140W. 

BASED ON 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
2145 UTC.

...SPECIAL FEATURES...

TROPICAL STORM GENEVIEVE CENTERED NEAR 14.3N 107.2W OR ABOUT 325 
NM...605 KM...SOUTH-SOUTHWEST OF MANZANILLO MEXICO AT 22/2100 
UTC MOVING W OR 270 DEG AT 10 KT. MAXIMUM SUSTAINED WINDS ARE 
50 KT WITH GUSTS TO 60 KT. ESTIMATED MINIMUM CENTRAL PRESSURE IS 
997 MB. SEE LATEST NHC FORECAST/ ADVISORY UNDER AWIPS/WMO 
HEADERS MIATCMEP3/WTPZ23 KNHC FOR MORE DETAILS. GENEVIEVE 
CONTINUES TO ORGANIZE SLOWLY AS THE SYSTEM CONTINUES TO FIGHT 
EASTERLY SHEAR. NUMEROUS STRONG CONVECTION IS WITHIN 125 NM IN 
THE W SEMICIRCLE. SCATTERED MODERATE ISOLATED STRONG ELSEWHERE 
WITHIN 150 NM W AND 60 NM E SEMICIRCLES. GENEVIEVE IS FORECAST 
TO REACH HURRICANE INTENSITY WITHIN 24 HOURS. 

DOWNGRADED TROPICAL DEPRESSION FAUSTO CENTERED NEAR 21.9N 121.6W 
650 NM...1210 KM...WEST OF CABO SAN LUCAS MEXICO AT 22/1500 UTC 
MOVING WNW OR 290 DEG AT 10 KT. MAXIMUM SUSTAINED WINDS ARE DOWN 
TO 30 KT WITH GUSTS TO 40 KT. ESTIMATED MINIMUM CENTRAL PRESSURE 
IS 1007 MB. SEE LATEST NHC FORECAST/ADVISORY UNDER AWIPS/WMO 
HEADERS MIATCMEP2/WTPZ22 KNHC FOR MORE DETAILS. FAUSTO IS 
RAPIDLY WEAKENING OVER THE COOL WATERS OF THE NORTHEASTERN 
PACIFIC WITH THE SYSTEM CONSISTING OF ONLY A SWIRL OF LOW 
CLOUDS. THE LAST ADVISORY HAS JUST BEEN ISSUED AND THE SYSTEM 
WILL BE TAKEN OUT OF THE SPECIAL FEATURES SECTION WITH THE NEXT 
TWD ISSUANCE. DISSIPATION OF THE REMNANT LOW IS EXPECTED WITHIN 
72 HOURS. 

...TROPICAL WAVES... 

NONE. 
  
...ITCZ...

ITCZ AXIS IS CENTERED ALONG 08N78W TO 14N101W TO 11N111W TO 
05N137W TO 06N140W. SCATTERED MODERATE TO STRONG FROM 3N TO 8N E 
OF 81W TO THE COLOMBIAN COAST. SCATTERED MODERATE ISOLATED 
STRONG WITHIN 90-120 NM S OF THE AXIS BETWEEN 108W AND 119W.

...DISCUSSION...

E OF 120W...
A LARGE UPPER LEVEL HIGH REMAINS ANCHORED OVER NE ARIZONA AND 
COVERS MUCH OF THE SW CONUS AND NRN MEXICO...EXCEPT FOR A WEAK 
SHEAR AXIS OVER WEST-CENTRAL TEXAS. THIS SHEAR AXIS SEPARATES 
THIS UPPER LEVEL HIGH FROM ANOTHER HIGH CENTER OVER THE NRN GULF 
OF MEXICO. BOTH FEATURES ARE CONTRIBUTING TO MAINLY DEEP-LAYERED 
EASTERLY FLOW OVER THE TROPICS E OF 120W. THIS STEERING FLOW IS 
ALLOWING TROPICAL DEPRESSION FAUSTO AND TROPICAL STORM GENEVIEVE 
TO MOVE ON A WESTWARD COURSE WITH GENEVIEVE EMBEDDED IN SHEARING 
MODERATE EASTERLY FLOW. SLY FLOW ON THE WEST SIDE OF THIS 
UPPER-LEVEL HIGH CONTINUES TO PULL MID TO UPPER LEVEL TROPICAL 
MOISTURE NWD ALONG THE COAST OF BAJA CALIFORNIA AND SW 
CALIFORNIA STATE AND FEEDING THE ONGOING NORTH AMERICAN SUMMER 
MONSOON. 

W OF 120W...
BROAD TROUGH COVERS THIS AREA. EXCEPT FOR SOME MOISTURE FROM 
FAUSTO THE AREA WEST OF 120W IS DRY AND CLOUD FREE IN THE MIDDLE 
AND UPPER LEVELS DUE TO MODERATE TO STRONG SUBSIDENCE WITH A 
LARGE AREA OF OVERCAST STRATOCUMULUS N OF 12N.

$$
COBB