000 ABPZ30 KNHC 011717 TWSEP MONTHLY TROPICAL WEATHER SUMMARY NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 800 AM PDT TUE JUL 1 2008 FOR THE EASTERN NORTH PACIFIC...EAST OF 140 DEGREES WEST LONGITUDE.. OVERALL ACTIVITY IN THE EASTERN PACIFIC WAS ABOUT NORMAL FOR THE MONTH OF JUNE. TWO TROPICAL STORMS FORMED DURING THE MONTH...WHICH MATCHES THE LONG TERM CLIMATOLOGY IN THE BASIN. ALTHOUGH JUNE AVERAGES ONE HURRICANE...NEITHER OF THE TROPICAL CYCLONES BECAME A HURRICANE IN THAT MONTH. HOWEVER...BORIS WAS JUST SHY OF THAT INTENSITY IN JUNE AND BECAME A HURRICANE A FEW HOURS AFTER THE START OF JULY. BORIS FORMED ON 27 JUNE FROM AN AREA OF LOW PRESSURE ASSOCIATED WITH AN AFRICAN EASTERLY WAVE. THIS WAVE LEFT THE COAST OF WEST AFRICA ON 15 JUNE...MOVED ACROSS THE TROPICAL NORTH ATLANTIC AS A HIGH AMPLITUDE DISTURBANCE...AND CROSSED INTO THE EASTERN NORTH PACIFIC ON 23 JUNE. CONVECTION SLOWLY BECAME ORGANIZED DURING THE NEXT FEW DAYS AS THE WAVE CONTINUED MOVING SLOWLY WESTWARD. BY EARLY ON 27 JUNE...THE SYSTEM HAD DEVELOPED INTO A TROPICAL DEPRESSION WHEN IT WAS ABOUT 570 MILES SOUTH-SOUTHWEST OF MANZANILLO MEXICO. LATER THAT DAY...THE DEPRESSION STRENGTHENED AND REACHED TROPICAL STORM INTENSITY. BORIS MOVED GENERALLY TOWARD THE WEST DURING THE NEXT TWO DAYS WITH LITTLE CHANGE IN INTENSITY. ON 29 JUNE...THE CYCLONE STRENGTHENED TO NEAR HURRICANE INTENSITY WHILE A RAGGED EYE WAS APPARENT FOR SEVERAL HOURS. BORIS MAINTAINED THAT APPROXIMATE STRENGTH ON 30 JUNE BEFORE BECOMING A HURRICANE EARLY ON 1 JULY. BORIS IS CURRENTLY A 75 MPH HURRICANE ABOUT 1140 MILES WEST- SOUTHWEST OF THE SOUTHERN TIP OF BAJA CALIFORNIA. CRISTINA HAD ITS ORIGINS IN A TROPICAL WAVE THAT CROSSED CENTRAL AMERICA ON 21 JUNE AND MOVED INTO THE EASTERN NORTH PACIFIC BY 22 JUNE. FOR THE NEXT FEW DAYS...AN AREA OF SHOWERS AND THUNDERSTORMS ASSOCIATED WITH THE WAVE MOVED WESTWARD WITHIN THE INTERTROPICAL CONVERGENCE ZONE WITH LITTLE CHANGE IN ORGANIZATION. BY 26 JUNE THE CLOUD PATTERN ASSOCIATED WITH THE SYSTEM BEGAN TO BECOME BETTER ORGANIZED...AND A DEPRESSION FORMED ON 27 JUNE ABOUT 1050 MILES SOUTHWEST OF THE SOUTHERN TIP OF BAJA CALIFORNIA. THE TROPICAL CYCLONE INITIALLY MOVED WEST-NORTHWESTWARD AND STRENGTHENED INTO A TROPICAL STORM ON 28 JUNE WHILE TURNING WESTWARD. CRISTINA REACHED AN INTENSITY OF 50 MPH EARLY ON 29 JUNE. ON 30 JUNE...CRISTINA WEAKENED TO A DEPRESSION...AND AT MONTH'S END WAS DEGENERATING INTO A REMNANT LOW. SUMMARY TABLE NAME DATES MAX WIND (MPH) DEATHS ----------------------------------------------------------------- H BORIS 27 JUN - 75 0 TS CRISTINA 27 JUN - 1 JUL 50 0 ----------------------------------------------------------------- NOTES...DATES BASED ON COORDINATED UNIVERSAL TIME (UTC) $$ FORECASTER PASCH/LANDSEA/FRANKLIN/BLAKE