000 AXPZ20 KNHC 050252 TWDEP TROPICAL WEATHER DISCUSSION NWS NATIONAL HURRICANE CENTER MIAMI FL 0405 UTC FRI JUN 05 2015 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 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 0300 UTC. ...SPECIAL FEATURES... AT 05/0000 UTC...HURRICANE BLANCA IS NEAR 13.7N 105.7W. THE SYSTEM IS MOVING NNW OR 330 DEG AT 7 KT. ESTIMATED MINIMUM CENTRAL PRESSURE IS 975 MB. MAXIMUM SUSTAINED WIND SPEED IS 85 KT WITH GUSTS TO 105 KT. SCATTERED MODERATE ISOLATED STRONG CONVECTION IS FROM 09N TO 16N BETWEEN 103W AND 109W. HURRICANE BLANCA IS FORECAST TO SLIGHTLY INTENSIFY AND REACH 90 KT BY FRI EVENING. BLANCA SHOULD GRADUALLY ACCELERATE TO THE N-NW. SWELLS GENERATED BY BLANCA ARE AFFECTING THE SW COAST OF MEXICO AND WILL SPREAD N INTO THE GULF OF CALIFORNIA AND BAJA CALIFORNIA SUR STARTING FRI MORNING. SWELLS WILL CONTINUE TO SPREAD N ALONG THE PACIFIC COAST OF THE BAJA PENINSULA INTO EARLY SAT. THESE SWELLS ARE LIKELY TO CAUSE LIFE-THREATENING SURF AND RIP CURRENT CONDITIONS. REFER TO LATEST NHC PUBLIC/FORECAST ADVISORIES UNDER AWIPS/WMO HEADERS MIATCPEP2/MIATCMEP2 AND WTPZ42/WTPZ22 KNHC FOR MORE DETAILS. ...TROPICAL WAVES/LOWS... BASED ON THE PAST FEW DAYS OF SATELLITE IMAGERY...THE AXIS OF A TROPICAL WAVE IS ALONG 91W N OF 05N. THE WAVE IS MOVING EXTREMELY SLOW AS THERE IS LITTLE STEERING CURRENT DUE TO HURRICANE BLANCA. THE CONVERGENCE OF ENERGY ASSOCIATED WITH THE SLOW MOVING WAVE IS PRODUCING AN AREA OF SCATTERED MODERATE ISOLATED STRONG FROM 08N TO 13N BETWEEN 91W AND 94W. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... THE ITCZ EXTENDS FROM 09N132W TO 08N140W. ISOLATED MODERATE WITHIN 60 NM N OF AXIS. ...DISCUSSION... AT 05/0000 UTC...POST-TROPICAL CYCLONE ANDRES IS CENTERED NEAR 20N 124W MOVING SE AT 3 KT. ESTIMATED MINIMUM CENTRAL PRESSURE WAS 1006 MB. MAXIMUM SUSTAINED WINDS ARE 30 KT WITH GUSTS TO 40 KT. WIND SHEAR IS KEEPING SCATTERED MODERATE CONVECTION DISPLACED TO THE N...CURRENTLY FROM 22N TO 25N BETWEEN 120W AND 125W. ANDRES WILL CONTINUE TO WEAKEN TO A REMNANT LOW BY FRI NIGHT. SWELLS GENERATED BY ANDRES...AS WELL AS LONG-PERIOD CROSS- EQUATORIAL SW SWELL...ARE BEGINNING TO SUBSIDE ALONG THE WEST COAST OF THE BAJA CALIFORNIA PENINSULA...BUT THEY WILL QUICKLY BE REPLACED BY SWELL ASSOCIATED WITH BLANCA ON FRI AND SAT. REFER TO LATEST NHC PUBLIC/FORECAST ADVISORIES UNDER AWIPS/WMO HEADERS MIATCPEP1/MIATCMEP1 AND WTPZ31/WTPZ21 KNHC FOR MORE DETAILS. HIGH PRESSURE OF 1027 MB IS CENTERED N OF THE AREA NEAR 37N136W WITH RIDGE EXTENDING SE TO NEAR 26N115W. THE PRESSURE GRADIENT BETWEEN THE RIDGE AND LOWER PRESSURE IN THE VICINITY OF THE ITCZ IS MAINTAINING A SMALL AREA OF MODERATE TO FRESH TRADE WINDS PRIMARILY W OF 135W. THE RIDGE WILL SLOWLY RETREAT NORTHWARD OVER THE NEXT COUPLE OF DAYS AS HURRICANE BLANCA MOVES ON A NW TRACK. THIS WILL KEEP TRADE WINDS FROM EXCEEDING A FRESH BREEZE THROUGH SAT MORNING. A DEVELOPING GALE N OF THE AREA BETWEEN THE AREA OF HIGH PRESSURE MENTIONED ABOVE AND LOW PRESSURE OVER THE SW UNITED STATES WILL GENERATE A NORTHERLY SWELL. SEAS GREATER THAN 8 FT ASSOCIATED WITH THIS SWELL WILL MOVE INTO THE NORTHERN WATERS N OF 29N BETWEEN 123W AND 128W TONIGHT INTO FRI NIGHT. $$ FORMOSA