000 AXPZ20 KNHC 262206 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 2136 UTC Fri Jun 26 2020 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 2130 UTC. ...SPECIAL FEATURES... Tropical Depression Boris is centered near 12.5N 139.1W at 26/2100 UTC moving NW at 6 kt. Estimated minimum central pressure is 1006 mb. Maximum sustained wind speed is 30 kt with gusts to 40 kt. Scattered moderate convection is from 11N to 15N W of 137W. Gradual weakening is forecast during the next couple of days, and Boris is forecast to degenerate to a remnant low pressure area by Sunday. Please read the latest NHC Public Advisory at: https://www.nhc.noaa.gov/text/MIATCPEP3.shtml and Forecast/ Advisory at https://www.nhc.noaa.gov/text/MIATCMEP3.shtml for more details. ...TROPICAL WAVES... A tropical wave is crossing central America with axis N of 01N near 83W, moving westward at around 15 to 20 kt. Scattered moderate to isolated strong convection is noted from 03N to 09N east of 90W. A tropical wave extends from 07N to 20N with axis near 101W, moving westward at around 10 kt. Scattered moderate to strong convection is noted from 06N to 17N between 94W and 104W. A tropical wave is from 07N to 22N with axis near 108W, moving westward at around 10 kt. A 1007 mb low near 15N107W is associated with the wave. Scattered moderate and isolated strong convection is noted from 13N to 20N between 100W and 110W. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough axis extends from 07N78W to 07N90W to low pressure near 16N107W to 13N122W to 11N133W. Aside from the convection associated with Tropical Depression Boris and the three tropical waves, scattered moderate convection is from 07N to 11N between 110W and 116W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO... A broad 1007 mb low pressure area is near 16N107W along a tropical wave axis. Associated convection is described above in the tropical waves section. Environmental conditions do not appear particularly conducive for development, and the chance of tropical cyclone formation continues to decrease. This system is expected to move west-northwestward away from the coast of Mexico during the next couple of days. Even so, a swath of fresh to strong E-SE winds and seas of 8-10 ft will parallel the coast through early Mon. Elsewhere, mainly gentle to moderate NW-N winds prevail offshore of Baja California. Southerly winds remain gentle to moderate in the Gulf of California, east of a trough axis that extends along the Baja peninsula, except for N of 29N where fresh to locally strong winds are expected to continue through Mon night. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Fresh to locally strong winds will pulse over and downstream of the Papagayo region through the middle of next week. Wave heights will peak around 8 ft each morning. Moderate to occasionally fresh monsoon flow will prevail over the waters S of 10N through this weekend. Looking ahead, building seas are possible W of 85W Mon night through Tue night as monsoonal flow freshens across the region and SW swell propagates through the waters. REMAINDER OF THE AREA... Please see the Special Features section above for more details on Tropical Depression Boris. Moderate to fresh monsoonal flow persists south of the monsoon trough between 97W and 118W. Fresh winds and SW swell are likely producing 7-9 ft combined seas in this region. Moderate to fresh N-NE flow continues between Boris and a high pressure ridge that extends across the northern waters, with seas generally 5-7 ft. A weak low-level circulation is near 13N122W, but associated wind speeds are less than 20 kt. A set of northerly swell will spread south of 30N Sat night through early next week building seas to 7-9 ft N of 27N. Cross-equatorial southerly swell, combined with freshening monsoon flow, will build seas south of the monsoon trough and east of 120W by this weekend. Seas are expected to build to 8-9 ft south of the Equator today through Sun in SW swell, then subside on Mon. Looking ahead, another SW swell event is possible over the far southern waters Tue and Tue night. $$ Ramos