000 AXPZ20 KNHC 050900 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1005 UTC Fri Jun 5 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 0600 UTC surface analysis and satellite imagery through 0900 UTC. ...SPECIAL FEATURES... ...Heavy rainfall across Central America and Southern Mexico... A Central American Gyre remains centered over southern Mexico and northern Central America, with the broad cyclonic circulation around the gyre encompassing the discussion waters N of 10N and E of 100W. The gyre is characterized by a northward displacement of the monsoon trough over Central America, and associated deep convection is usually found south of the trough axis. Cristobal, now a tropical depression over the Yucatan penisula, remains embedded within the larger circulation of the gyre, and will continue to produce additional heavy rainfall over portions of SE Mexico and northern Central America the next two days. Cristobal is expected to produce additional extreme rainfall amounts through Sat. The heaviest additional rainfall is expected over far southern Mexico and portions of the Yucatan Peninsula, also extending along the Pacific coast from Chiapas to Guatemala and El Salvador. This rainfall can cause widespread life-threatening flash floods and mudslides. Refer to products from your local weather office for more information. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 14N93W to 11N100W to 1011 mb low pres near 10N115W to 07N124W. A trough extends from 12N132W to 04N138W. Numerous moderate scattered strong convection is noted from 12N to 16N between 92W and 97W. Scattered moderate isolated strong is noted from 07N to 12N between 90W and 113W. A cluster of moderate convection is within 45 nm of the low pres centered near 10N115W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Please see the Special Features section for more details on the Central American Gyre. Moderate to fresh NW winds will prevail west of Baja California today, with the exception of fresh to strong NW winds along and offshore of the coast of Cabo San Lucas. Seas will build to 7-9 ft across the waters between Las Marias and Cabo San Lazaro this morning. High pressure will build across the area, producing fresh to strong NW winds over the offshore waters of Baja California tonight and Sat, mainly S of Punta Eugenia. Seas will build to 8-9 ft with these winds. Strong NW west of San Diego California will build seas west of Baja California Norte to 9-13 ft Sun night and Mon. In the Gulf of California, a surface trough and tight pressure gradient will support strong winds and building seas to 6-9 ft by tonight. The Central American Gyre will continue to produce onshore flow and active weather over the waters of southern Mexico, including the Gulf of Tehuantepec, the next two days. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Please see the Special Features section for more details on the Central American Gyre. Moderate to fresh onshore winds will prevail across the forecast waters of Guatemala and El Salvador today, with seas of 7-9 ft in SW swell. Gentle to moderate SW to W winds are expected elsewhere. Large long-period SW swell will propagate across the region through this weekend. REMAINDER OF THE AREA... High pressure NW of the area extends a ridge across the northern forecast waters to near the Revillagigedo Islands. Fresh trade winds are expected along the southern periphery of the ridge and north of the ITCZ during the next few days. High pressure will continue to build across the northern waters the next few days, and strengthen the trade winds S of 20N and W of 130W over the weekend. SW swell will continue to propagate across the forecast waters mainly S of 15N between 90W-120W supporting seas of 8-9 ft. Seas will slowly subside today, but another large SW swell event will reach the waters S of the Equator tonight into Sat. $$ Mundell