000 AXPZ20 KNHC 250229 CCA TWDEP Tropical Weather Discussion...corrected NWS National Hurricane Center Miami FL 2205 UTC Mon Apr 24 2017 corrected header time 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 1800 UTC surface analysis and satellite imagery through 2145 UTC. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A trough axis extends from the coast of Costa Rica near 09N85W to 06N92W to 07N100W, where scatterometer winds indicate an ITCZ axis forms and extends westward to 06N127W to 05N134W to beyond 05N140W. Scattered moderate/isolated strong convection is noted from 06N to 12N between 115W and 120W. Scattered moderate convection within 120 nm south of the axis between 112W and 115W, and also within 60 nm of the axis between 125W and 130W. ...DISCUSSION... OFFSHORE WATERS WITHIN 250 NM OF MEXICO... A 1027 mb high is centered just northwest of the area near 33N138W, with a ridge extending southeastward to near 18N115W. Moderate to fresh northwesterly winds are observed south of 30N west of the Baja Peninsula to near 125W, with 8 to 10 ft seas in long period NW swell. Near gale to gale force northwest winds are occurring north of the discussion area off the coast of Southern California. Strong northwest winds and associated seas will spread south of 30N tonight, and reach near 25N by Tuesday night, then diminish on Wednesday. Combined seas will build to around 12 ft with these strong winds on Tuesday, and continue through Wednesday. Gulf of Tehuantepec: Strong northerly winds over the northern portion of the Gulf were detected by the 1616Z Ascat pass. As the gradient over southeastern Mexico weakens further through this evening, these winds will diminish to fresh category, with seas to 8 ft in northeast swell reaching south to near 11N between ' 95W and 98W. This swell then subsides to less than 8 ft by late tonight. Gulf of California: Fresh to strong nocturnal southwest winds are expected tonight across the gulf waters from 29.5N to 31N, with seas building to around 5 ft. Mostly gentle to moderate southerly flow expected south of 29.5N along a trough that will meander over the region during the rest of this week. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... A gentle onshore breeze is expected during the day, becoming offshore along the coast at night. Combined seas of 4 to 6 ft mainly in southwest to west swell will continue through Wednesday, except for large swell in the 6 to 8 ft range expected to prevail offshore the Galapagos Islands through Wednesday. REMAINDER OF THE AREA... A northwest to southeast ridge axis will remain the main feature through Wednesday. The gradient south of the ridge will support mainly fresh northeast winds over over much of this area. Expect 7 to 8 ft northwest swell to gradually subside from the northwest through Wednesday over the northeast part of the area outside 250 nm of the Baja California Peninsula coast. $$ Aguirre