000 AXPZ20 KNHC 220205 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 032 UTC Mon Apr 22 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 0000 UTC surface analysis and satellite imagery through 0140 UTC. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A trough extends from 07N77W to 05N85W to 05N97W. The ITCZ continues from 05N97W to 05N104W to 04N113W to 05N122W to beyond 00N135W. Scattered moderate and isolated strong convection is noted within 90 nm either side of a line from 04N89W to 08N96W and from 06N to 09N between 104W and 118W. ...DISCUSSION... OFFSHORE WATERS WITHIN 250 NM OF MEXICO... A broad high pressure ridge persists over the offshore waters west of Baja California. The pressure gradient between this ridge and a cold front crossing the northern Gulf of California and a low pressure trough over Baja California Sur supports moderate NW winds north of Cabo San Lazaro with seas generally 5-7 ft. A weakening cold front is crossing the northern Gulf of California. Moderate winds are becoming fresh along the Baja California Norte coast as seas building to around 8 ft N of 28N. NW swell will continue impacting the northern waters through Mon night, then seas will subside through the mid week. Gulf of California: A cold front over the northern Gulf of California and strong high pressure west of the Baja California Peninsula is maintaining moderate SW to W gap winds north of 29.5N. These winds will become fresh to strong tonight before diminishing to moderate to fresh Mon morning then to generally light winds Mon afternoon. Otherwise, light to gentle winds will prevail across the Gulf through Fri. Gulf of Tehuantepec: A weak pressure gradient over the region will result in variable, light to gentle winds across the area Mon through Thu. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Gulf of Papagayo: Fresh to strong NE to E winds will pulse across the Gulf of Papagayo and downwind to near 90W through Mon night. Winds will be strongest during the overnight and early morning hours with the assistance of the nocturnal drainage flow. The pressure gradient will slacken Tue through Thu allowing for winds to diminish to moderate to fresh speeds and further to light to gentle winds beginning late Wed. Gulf of Panama: Moderate N to NE winds will continue across the Gulf of Panama through Thu with seas generally running 3-5 ft in mixed SW swell and N to NE wind waves. Elsewhere, light to gentle winds will persist across the region with seas of 4 to 6 ft in S to SW swell. Wave heights in the vicinity of the Galapagos Islands will run between 5 and 7 feet through Fri. REMAINDER OF THE AREA... A high pressure ridge extends SE across the northern waters from near 32N136W to near the Revillagigedo Islands. The pressure gradient between this ridge and the ITCZ is supporting fresh trade winds south of 20N and west of 130W based on satellite- derived wind data from around 18Z. An altimeter pass from around 19Z indicates 8 to 9 ft seas within the trades south of the ridge and W of 130W. These conditions will generally persist through Mon night as high pressure lingers north of the area. The high will weaken Tue through Thu in response to low pressure approaching from the west. This will allow winds to decrease and seas to subside below 8 ft by midweek. A set of long-period NW swell associated with a weakening cold front will move into the waters N of 29N and E of 130W this evening. Seas will build to around 8 ft NW of Guadalupe Island tonight, then remain around 8 ft through Mon night. Elsewhere, S to SW swell will produce seas to 8 ft generally south of the Equator and west of 110W on Tue and Tue night. $$ CAM