000 AXPZ20 KNHC 310904 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 454 UTC Fri Mar 31 2017 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. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The ITCZ extends from 04N126W to 02N140W. Scattered moderate isolated strong convection is noted from 05N to 07N between 125W and 130W. Scattered moderate isolated strong convection was noted from 07N to 10N between 138W and 140W. ...DISCUSSION... OFFSHORE WATERS WITHIN 250 NM OF MEXICO... High pressure of 1032 mb centered north of the area extends a ridge southeast to the Revillagigedo Islands. A dissipating cold front is propagating across the northern Gulf of California across Baja California Norte to near 28N128W. The overnight scatterometer pass depicts moderate to fresh northwest winds prevail west of Baja California Norte while gentle to moderate northwest winds prevail west of Baja California Sur. Fresh to strong winds prevail both ahead of and behind the cold front over the northern Gulf of California while gentle to moderate winds prevail over the southern Gulf of California. Light to gentle winds with seas in the 4-7 ft range prevails elsewhere across the forecast waters. Gale force winds north of the area off the coast of southern California will generate a northwesterly swell which will peak near 14 ft today over the western waters off Baja California Norte. This swell will subside to around 8 ft over this area on Sunday. Another round of northwesterly swell once again builds seas to the 10 and 12 ft over this area on Monday. Seas off Baja California Sur will remain between 7 and 9 ft through the middle of next week. Winds will diminish today over the Gulf of California as the cold front weakens. Light to gentle winds will prevail elsewhere through the forecast period. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Light to gentle winds and seas in the 3-5 ft range are expected to prevail over the forecast waters during the next several days. REMAINDER OF THE AREA... High pressure prevails over the northern waters. The pressure gradient between the area of high pressure and the equatorial trough is generating fresh to locally strong trade winds north of 08N and west of 130W. Seas over this area are in the 8 and 11 ft range as long period northwest swell mixes with shorter period northeast wind waves. The areal coverage of the strong trades will diminish today as high pressure weakens slightly and loosens the pressure gradient. Another set of large northwest swell will reach the northwest part of the forecast area Saturday night. Seas associated to this swell will peak near 13 ft over the northern waters Sunday before subsiding. $$ AL