000 AXPZ20 KNHC 020915 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 0915 UTC Tue Apr 2 2019 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... A surface trough extends from 07N78W to 06N89W. The ITCZ continues from 06N89W to 04N100W to 06N110W to 05N125W to 01N135W to beyond 02N140W. Scattered moderate convection is noted within 90 nm north of the trough between 81W and 83W, within 90 nm south of the trough between 84W and 87W, and within 45 nm north of the ITCZ between 125W and 127W. ...DISCUSSION... OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Recent scatterometer data shows gentle NW winds over the offshore waters west of Baja California with weak high pressure centered west of the region. Gentle to occasionally moderate winds will prevail off Baja California through Thu. Looking ahead, NW winds will strengthen to fresh speeds Fri through Sat and become strong by Sat night as a stronger high pressure ridge builds west of the waters. Large, long period NW swell will move into the northern waters Sat night. Gulf of California: Light to gentle winds prevail across the Gulf of California. Fresh to locally strong SW gap winds will develop in the northern Gulf Tue night ahead of a weakening cold front. These gap winds will continue pulsing to moderate to fresh speeds north of 29N Wed night and Thu night. Gulf of Tehuantepec: A high pressure ridge extending southward over eastern Mexico is supporting strong to near gale N to NE winds over the Gulf of Tehuantepec. Strong winds will continue pulsing over the Gulf through early Wed, then rapidly diminish as high pressure moves east away from the region. Light to gentle winds will prevail Wed night through Sat night. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Gulf of Papagayo: Strong NE to E winds will pulse across the Gulf of Papagayo through Thu. The strongest winds are expected during the overnight and early morning hours with seas building to 8-9 ft. Looking ahead, moderate to fresh winds will prevail over the region Thu night into the weekend. Gulf of Panama: Moderate to fresh winds will persist in the Gulf of Panama through Thu. Expect generally light to gentle winds over the region Thu night through Sat night. Elsewhere, light to gentle winds will prevail through the week. Wave heights will generally range from 3-6 ft in mixed NW and SW swell. REMAINDER OF THE AREA... Recent scatterometer data reveals an area of moderate to fresh trade winds roughly from 05N to 13N west of 135W. Seas are generally 8-10 ft in this region based on corresponding altimeter data. Trade winds will diminish and seas will subside through midweek as high pressure weakens over the northern waters. Elsewhere, a cold front extends over the far NW waters from 30N129W to 28N133W. This front will gradually weaken as it moves across the northern portion through early Wed. Another cold front will move across the northern waters Wed through Thu with associated NW swell building seas to 8 ft across the far NW portion. Looking ahead, an intense low pressure system will track well north of the forecast area by late week. Very large, long period NW swell associated with this system will propagate southeast across the region Fri through Sat night. Seas will build to 10-17 ft over the NW portion by Sat with a widespread area of seas greater than 8 ft north of 06N and west of 120W on Sat night. $$ Reinhart