000 AXPZ20 KNHC 272150 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 2150 UTC Wed Jun 27 2018 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 2100 UTC. ...SPECIAL FEATURES... Tropical Depression Six-E has developed this afternoon and is centered near 13.3N 108.5W at 27/2100 UTC or 580 nm S of The Southern Tip Of Baja California moving WNW at 13 kt. Estimated minimum central pressure is 1007 mb. Maximum sustained wind speed is 30 kt with gusts to 40 kt. Scattered moderate and isolated strong convection is from 10N to 18N between 106W and 115W. Slow strengthening is forecast during the next 72 hours, and the depression is forecast to become a tropical storm on Thu. See latest NHC forecast/advisory under AWIPS/WMO headers MIATCPEP1/WTPZ31 KNHC for more details. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 09N83W to 11N95W to recently upgraded T.D. Six-E near 13.3N108.5W to 14N120W to 11N135W. The ITCZ begins near 11N135W and continues to beyond 10N140W. Aside from convection associated with the T.D. Six-E, scattered moderate and isolated strong convection is from 05N to 13N E of 103W. ...DISCUSSION... OFFSHORE WATERS WITHIN 250 NM OF MEXICO... See the special features section for further details on recently developed Tropical Depression Six-E. High pressure well northwest of the region supports mainly gentle to moderate NW flow across the offshore waters N of 25N. The pressure gradient in the northern Gulf of California will tighten tonight as the ridge intensifies north of the region, leading to the development of fresh to possibly strong winds over the Gulf of California N of 29N tonight through Fri. Seas over this portion of the Gulf will range between 3 to 6 ft during this time. Strong winds north of the region supported by the strengthening ridge will bring NW swell of 7 to 9 ft offshore Baja California briefly Fri into Fri night. A tropical wave with axis near 92W is expected to spawn a low south of the Tehuantepec region by Fri with fresh to strong winds, possibly increasing to near gale force later that night. The system will move west-northwest bringing these conditions toward the offshore waters of Tehuantepec and Oaxaca Fri and Guerrero, Mexico on Sat. Seas associated with this system will then affect the offshore waters of Manzanillo on Sun. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Fresh to occasionally strong offshore winds will occur across the Papagayo through the weekend. On Fri, low pressure expected to develop along the monsoon trough will increase winds to strong to near gale force W of 90W over the offshore zone of Guatemala and El Salvador. This low will then exit the offshore zone to the west by Sat. Otherwise, the monsoon trough will meander between 09N and 15N the next several days, with gentle winds to the north, and moderate winds to the south of the trough. REMAINDER OF THE AREA... See the special features section for further details on recently developed Tropical Depression Six-E. The remnant low of Daniel is centered near 20N123W. No convection is noted. The pressure gradient between the low and high pressure to the NW of the region is likely supporting fresh winds within about 90 nm of the NW semicircle of the low, with associated seas to 8 ft. The low is expected to degenerate into a trough tonight. High pressure well northwest of the area has a ridge axis that extends SE to near 25N120W. S of 20N and N of the ITCZ, moderate to fresh NE to E winds prevail with seas generally ranging between 5 to 7 ft. Fresh NE winds are generally N of 20N W of 127W with seas to 9 ft, aided by both a SE and a NW swell component. The wave heights over the waters N of 20N will improve tonight as the underlying swell diminishes. $$ Latto