000 AXPZ20 KNHC 180819 CCA TWDEP Tropical Weather Discussion...Corrected NWS National Hurricane Center Miami FL 0405 UTC Sun Mar 18 2018 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 0345 UTC. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A surface trough axis extends from low pres over NW Colombia to the Pacific coast of Colombia at 08N79W to 05N100W to 05N111W where latest scatterometer winds indicate the ITCZ axis begins and continues westward 06N123W to beyond 07N140W. Scattered moderate isolated strong convection is within 60 nm south of the axis between 90W and 91W. Scattered moderate convection is within 30 nm of the axis between 84W and 87W. ...DISCUSSION... OFFSHORE WATERS WITHIN 250 NM OF MEXICO...Corrected A dissipating cold front extends from the extreme southeastern part of California southwestward to across the extreme northwest portion of the Gulf of California, and continues to near 27N122W. A 1020 mb high is centered at 26N120W, with a ridge extending southeastward to 15N100W. The front will dissipate this afternoon, while the high center will remain about stationary. The high center will then become centered slightly to the southwest on Mon and Tue. Fresh to locally strong northerly winds will develop from 21N to 22N between 110W and 112W this morning, then from 19N to 20N E of 106W this evening, from 18.5N to 20N between 105.5W and 106W early Mon, with maximum seas of 8 ft, and from 18N to 20.5N between 105W and 107W by Mon evening with seas of 8 ft. Gulf of California: A dissipating cold front is moving across the far NW portion of the gulf. Strong southwest to west winds are occurring from 29.5N to 30.5N. The front will be followed by strong northwest to north winds through this morning and diminish to moderate winds this afternoon. Elsewhere over the gulf, moderate northwest flow will be present, except increasing to fresh northwest to north winds over the southern portion tonight, and continue through Mon before increasing to strong early Mon evening and continuing through Tue. Seas with these winds will be in the range of 5 to 6 ft. Fresh to locally strong northwest to north flow expected across the open Pacific waters from 18N to 23N east of 110W on Sun through Mon night with seas building to 8 ft. Gulf of Tehuantepec: Strong north flow will surge through the gulf waters on Tue night, increasing to minimal gale force early on Wed. Gale conditions of 30 to 40 kt are then expected to continue through late Thu night, with seas building to 15 ft downstream of the gulf near 14.5N95.5W on Wed night. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Gulf of Papagayo: Fresh to locally strong NE nocturnal winds, with seas of 5 to 7 ft will diminish to moderate intensity this afternoon, then increase again to strong tonight, and continue through Mon. Gulf of Panama: Fresh northerly winds will diminish to moderate winds this afternoon, then briefly increase to fresh tonight before diminishing again to moderate intensity on Mon. Elsewhere, gentle to moderate offshore flow will prevail N of 08N while light to gentle SW winds are forecast S of 08N. REMAINDER OF THE AREA... A cold front will approach the far NW corner this morning, with the pres gradient tightening up ahead of it. This will develop strong south to southwest winds from 26N to 28N W of 136W tonight. The cold front will reach from near 32N134W to 24N140W by early on Mon, with a second cold front expected to approach the far NW corner at that time. Strong south to southwest winds are forecast for N of 25N within 300 nm east of the first cold front, with seas of 8 to 10 ft. Southwest to west strong winds are expected N of 29N and W of 138W early on Mon, with seas of 8 to 10 ft. By early Mon evening, strong to near gale force SW to W winds along with seas of 9 to 12 ft are expected within 120 nm east and southeast of the second cold front along a position from 32N138W to 29N140W. West to northwest strong winds, with seas of 10 to 13 ft in a NW swell are expected west of the second cold front. It is possible that near gale force southwest to west winds associated with the second cold front may become gale conditions on Tue. $$ Aguirre