000 AXPZ20 KNHC 150240 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 0230 UTC Mon Jul 15 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 0230 UTC. ...TROPICAL WAVES... The axis of a tropical wave across the western Caribbean extends southward into the eastern Pacific near 85W, moving westward around 15 kt. Scattered moderate and isolated strong convection is noted from 03N to 10N between 80W and 90W. The axis of a tropical wave is near 93W/94W, moving westward around 15 kt. Scattered moderate isolated strong convection is noted from 08N to 12N between 90W and 94W. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 08.5N78W to 08N83W to 12N109W to 08N130W. The ITCZ continues from 08N130W to 08N140W. Scattered moderate isolated strong convection is noted within 180 nm S of the monsoon trough between 102W and 120W. Scattered moderate convection is noted within 90 nm of the monsoon trough between 120W and 130W. Scattered moderate convection is noted within 90 nm of the ITCZ between 130W and 134W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO... A weak pressure pattern prevails over the forecast waters. This afternoon's scatterometer pass indicates light and variable winds prevail across the forecast waters. Southerly swell continues to impact the southern portion of the forecast area, with seas in the 6-7 ft range S of 20N. Seas in the 5-6 ft range prevail N of 20N, and 1-3 ft over the Gulf of California. The southerly swell will gradually subside over the next couple of days. A low pressure trough along Baja California will deepen on Tue, increasing SE flow over the Gulf of California. Winds will strengthen over the northern and central Gulf, with moderate winds across the southern portion. Winds will diminish late Wed. Northerly swell will propagate into the waters off Baja California Norte, with seas in the 6-8 ft range Tue and Wed before subsiding. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... The monsoon trough is positioned along 08N-09N across the Central American offshore waters. Latest scatterometer pass indicates moderate to fresh SW flow south of the trough, and moderate to fresh NE winds N of the monsoon trough. Winds will pulse to fresh to strong across the Gulf of Papagayo during the overnight hours through the forecast period. Winds will diminish S of the monsoon trough early next week. SW swell continues to impact the forecast waters, with seas in the 6-8 ft range prevailing. Seas will gradually subside early next week and fall below 8 ft by Mon night. REMAINDER OF THE AREA... Low pres, the remnant low of TD Four-E, is centered near 19N117.5W. Winds earlier have diminished to 20 kt or less, with seas falling below 8 ft. This remnant low will dissipate Mon. High pressure is centered N of the forecast area near 32N137W. The pressure gradient between the area of high pressure and lower pressure in the vicinity of the ITCZ is supporting moderate to fresh tradewinds N of the ITCZ to 20N and west of 130W. Seas over this area are in the 6-8 ft range. Gentle to moderate winds prevail elsewhere N of the monsoon trough. Moderate to fresh winds prevail S of the monsoon trough. Long period S to SW swell remains across much of the southern waters. The latest altimeter data indicates 7-9 ft seas cover much of the area south of 10N and east of 120W. Seas will gradually subside through the early part of the week. $$ AL