000 AXPZ20 KNHC 020956 TWDEP TROPICAL WEATHER DISCUSSION NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 1005 UTC WED JUL 02 2008 TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM THE EQUATOR TO 32N...EAST OF 140W. BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 0915 UTC. ...SPECIAL FEATURES... THE EYE OF HURRICANE BORIS WAS LOCATED NEAR LATITUDE 15.9 NORTH...LONGITUDE 126.5 WEST OR ABOUT 1030 NM...1905 KM WEST-SOUTHWEST OF THE SOUTHERN TIP OF BAJA CALIFORNIA AT 02/0900 UTC. BORIS WAS MOVING WNW AT 7 KT. ESTIMATED MINIMUM CENTRAL PRESSURE IS 988 MB. MAXIMUM SUSTAINED WINDS HAVE INCREASED TO 65 KT WITH GUSTS TO 80 KT. SEE LATEST NHC FORECAST/ADVISORY UNDER AWIPS/WMO HEADERS MIATCMEP2/WTPZ22 KNHC FOR MORE DETAILS. INFRARED SATELLITE IMAGERY INDICATED A DISTINCT BUT RAGGED EYE FEATURE WITH A DIAMETER OF 25 NM SURROUNDED BY A RING OF SCATTERED MODERATE TO STRONG CONVECTION WITHIN 75-90 NM OF THE CENTER. BORIS WAS UPGRADED TO A HURRICANE AGAIN BASED ON THE IMPROVED SATELLITE SIGNATURE. OUTFLOW IS SYMMETRIC IN ALL QUADRANTS. HOWEVER...BORIS IS FORECAST TO GRADUALLY WEAKEN AS IT MOVES INTO AN AREA OF COOLER SEA-SURFACE TEMPERATURES AND A MORE STABLE ENVIRONMENT. TROPICAL DEPRESSION FOUR-E IS CENTERED NEAR LATITUDE 16.6 NORTH...LONGITUDE 107.4 WEST OR ABOUT 265 NM...425 KM... SOUTHWEST OF MANZANILLO MEXICO AND ABOUT 465 MILES...750 KM...SOUTH-SOUTHEAST OF CABO SAN LUCAS MEXICO AT 02/0900 UTC. THE DEPRESSION WAS MOVING NW AT 6 KT. ESTIMATED MINIMUM CENTRAL PRESSURE IS 1006 MB. MAXIMUM SUSTAINED WIND SPEED IS 30 KT WITH GUSTS TO 40 KT. SEE LATEST NHC FORECAST/ADVISORY UNDER AWIPS/WMO HEADERS MIATCMEP4/WTPZ24 KNHC FOR MORE DETAILS. NUMEROUS STRONG CONVECTION IS ORGANIZED IN TWO BANDS...ONE WITHIN 150-180 NM IN THE NW SEMICIRCLE AND THE OTHER WITHIN 120 NM IN THE SE SEMICIRCLE WITH VERY COLD CLOUD TOP TEMPERATURES OF -80C. THE SYSTEM IS ON THE VERGE OF BECOMING A TROPICAL STORM AND IS FORECAST TO BECOME ONE WITHIN THE NEXT 12 HOURS. TROPICAL WAVES... A TROPICAL WAVE LOCATED ALONG 91W N OF 6N INTO CENTRAL AMERICA IS MOVING W ABOUT 10 KT. SCATTERED STRONG CONVECTION IS LOCATED WITHIN 180 NM EITHER SIDE OF THE WAVE AXIS FROM 10N TO 15N. ...ITCZ... ITCZ AXIS IS CENTERED ALONG AXIS 09N84W TO 06N92W TO 11N101W TO 12N120W TO 07N140W. SCATTERED MODERATE TO STRONG FROM 10N TO 15N BETWEEN 89W AND 97W. SCATTERED MODERATE ISOLATED STRONG WITHIN 90-120 NM OF THE AXIS BETWEEN 86W AND 93W...BETWEEN 97W AND 100W. ...DISCUSSION... W OF 110W... A MIDDLE/UPPER LEVEL TROUGH HAS ITS AXIS ALONG 137W N OF 25N WITH CYCLONIC FLOW LOCATED N OF 25N W OF 128W. AN ASSOCIATED COLD FRONT IS LOCATED THROUGH 32N134W TO BEYOND 26N140W. SW WINDS TO 20 KT AND SEAS TO 8 FT ARE LOCATED N OF 28N E OF THE FRONT TO 132W. THE FRONT WILL MOVE SLOWLY E OVER THE NEXT 24 HOURS AND DISSIPATE BY 36 HOURS. THE REMNANTS OF CRISTINA ARE LOCATED NEAR 14N136W WITH NIGHT TIME VISIBLE IMAGERY INDICATING ONLY A SWIRL OF LOW LEVEL CLOUDS. A DEVELOPING MIDDLE/UPPER LEVEL CYCLONIC CIRCULATION IS CENTERED NEAR 23N116W...MOVING W ABOUT 10 KT. WATER VAPOR IMAGERY INDICATES STRONG SUBSIDENCE N OF 20N BETWEEN 112W TO WELL BEYOND 140W...HOWEVER THE DEEP LAYERED MOISTURE ASSOCIATED WITH HURRICANE BORIS APPEARS TO BE SPREADING NWD INTO THE AREA OF SUBSIDENCE. FOR NOW IT APPEARS VERY LITTLE OF THE DRY AIR IS BEING ENTRAINED INTO THE CIRCULATION OF BORIS. ELSEWHERE MODERATE EASTERLY WINDS ALOFT COVER THE DEEP TROPICS S OF ABOUT 12N. E OF 110W... OVER THE E PART OF THE DISCUSSION AREA EASTERLY WINDS ALOFT COVER MOST OF THE AREA E OF 110W WITH SATELLITE CLOUD DRIFT WINDS INDICATING SPEEDS OF 25 TO 35 KT. A SURFACE LOW IS FORECAST TO DEVELOP NEAR 10N96W WITHIN THE NEXT 24 HOURS. $$ COBB