000 AXPZ20 KNHC 020357 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 0405 UTC Sat Jul 2 2022 Tropical Weather Discussion for the eastern Pacific Ocean from 03.4S to 30N, east of 120W including the Gulf of California, and from the Equator to 30N, between 120W and 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 0350 UTC. ...SPECIAL FEATURES... Tropical Storm Bonnie is centered near 10.9N 83.8W at 02/0300 UTC or 70 nm S of Bluefields Nicaragua moving W at 14 kt. Estimated minimum central pressure is 997 mb. Maximum sustained wind speed is 45 kt with gusts to 55 kt. Bonnie will move across southern Nicaragua and northern Costa Rica tonight and emerge over the eastern Pacific Ocean on Saturday. The system will then move offshore of but parallel to the coasts of El Salvador, Guatemala, and southern Mexico Saturday through Monday. Weakening is likely while the center of Bonnie crosses Nicaragua and Costa Rica. The storm is forecast to re-intensify over the eastern Pacific Saturday night and Sunday. Bonnie may reach hurricane strength off the coasts of Oaxaca by early Mon. Please read the latest NHC Public Advisory at https://www.nhc.noaa.gov/text/MIATCPAT2.shtml and Forecast/ Advisory at https://www.nhc.noaa.gov/text/MIATCMAT2.shtml for more details. ...TROPICAL WAVES... A tropical wave extends from 11N to 20N with axis near 123W, moving west at 10 to 15 kt. A 1009 mb low pressure is centered along the wave. Scattered moderate convection is from 14N to 18N between 120W and 125W. Scattered moderate isolated strong convection is from 08N to 12N between 118W and 126W. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 08N86W to 09N100W to 08N111W. The ITCZ extends from 10N127W to beyond 06N140W. Scattered moderate convection is evident from 05N to 14N between 99W and 113W, and from 05N to 12N W of 127W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Please refer to the Special Features section for details on Atlantic Tropical Storm Bonnie which is forecast to move across the offshore waters off southern Mexico Sun night through the middle of next week. Moderate to fresh NW winds are along the Baja California offshore waters with seas to 5 ft. Light to gentle variable winds with seas to 3 ft dominate the remaider region, except for moderate NW winds off the Jalisco coast and moderate to fresh N winds in the region of Tehuantepec. For the forecast, Bonnie is forecast to cross southern Nicaragua or northern Costa Rica tonight, emerge over the eastern Pacific Ocean early on Saturday. Bonnie will intensify and reach the waters south of the Gulf of Tehuantepec Sun evening, and strengthen to a hurricane over the Oaxaca offshore waters early on Mon. Bonnie will change little in intensity as it moves off the coasts of Colima and Jalisco through Tue. Elsewhere, NW moderate to fresh winds along the Baja offshore waters will further increase to fresh to strong N of Punta Eugenia by Sat night as low pressure develops over the SW Continental U.S., thus increasing the pressure gradient in the zone. Moderate to fresh NW winds will then prevail along the Baja offshores through Tue next week. Light to gentle winds along the Gulf of California will increase to moderate speeds Sun and then diminish back to gentle speeds on Mon. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Please refer to the Special Features section for details on Atlantic Tropical Storm Bonnie which is forecast to cross southern Nicaragua or northern Costa Rica tonight, and emerge over the eastern Pacific Ocean early Sat. Gentle to moderate S to SW winds are offshore Ecuador, the Galapagos Islands, Colombia, Panama and Costa Rica with seas to 6 ft in southerly swell. Light to gentle variable winds are elsewhere. For the forecast, Bonnie will reach 11.0N 88.5W Sat evening, 11.6N 90.9W Sun morning, and 12.4N 93.7W Sun evening. Bonnie will continue to move WNW to the south of the Gulf of Tehuantepec, then continue farther west of the area through early in the week. Winds and seas will diminish across the region mid week. REMAINDER OF THE AREA... A small area of low pressure located several hundred miles southwest of the southern tip of the Baja California peninsula near 15N123W. Fresh to strong NE to E winds and seas to 8 ft are within 90 nm N semicircle of the low center. Scattered moderate convection is from 14N to 18N between 120W and 125W. Further development of this system is not likely to occur while it moves westward over gradually decreasing sea surface temperatures and into a less favorable environment. Otherwise, surface ridging dominates the forecast waters N of the ITCZ, providing gentle to moderate NE winds N of 23N W of 124W and NE to E moderate to fresh winds between the ITCZ and 23N. For the forecast, other than the area of low pressure southwest of southwestern Mexico, little change in conditions are forecast across the open waters through the upcoming weekend into early next week. $$ Ramos