


Tropical Weather Discussion
Issued by NWS
Issued by NWS
518 AXPZ20 KNHC 060406 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 0405 UTC Sat Sep 6 2025 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 0320 UTC. ...SPECIAL FEATURES... Hurricane Kiko: Major Hurricane Kiko is centered near 14.9N 138.7W at 06/0300 UTC, moving west-northwest at 10 kt. Estimated minimum central pressure is 946 mb. Maximum sustained wind speed is 120 kt with gusts to 140 kt. Seas are peaking near 33 ft, and in excess of 12 ft within 60 nm of the center of the system, except for 90 nm within the SE quadrant. Numerous moderate convection is noted from 11N to 17N between 136W and 140W. Kiko is expected to move west-northwest over the next few days and move into the central Pacific basin by Sat morning. Kiko is a category 4 hurricane on the Saffir-Simpson Hurricane Wind Scale. Additional strengthening is possible overnight and into Saturday before gradual weakening begins by Sunday. Please read the latest HIGH SEAS FORECAST issued by the National Hurricane Center at website - https://www.nhc.noaa.gov/text/MIAHSFEP2.shtml and the latest Kiko NHC Forecast/Advisory and Public Advisory at www.hurricanes.gov for more details. ...TROPICAL WAVES... A tropical wave extends from 07N to 17N with axis near 106W, moving west at 5-10 kt. Scattered moderate convection is from 07N to 19N between 100W and 114W. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 10N86W to 16N110W to 14N128W. Aside from the convection from Kiko and the tropical wave, scattered moderate convection is from 04N to 15N E of 96W. Widely scattered modoerate convection is elsewhere from 07N to 15N between 115W and 129W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... The remnants of Post-Tropical Cyclone Lorena are analyzed as a 1007 mb low pressure W of Cabo San Lazaro near 24N115W. This low is providing moderate to fresh N to NE winds N of Cabo San Lazaro and west of the low center while gentle to moderate S to SW winds are ongoing E of the low center between 24N and 27N. Seas are moderate in mixed SW and NW swell along the Baja California offshore waters. In the Gulf of California, gentle to moderate southerly winds prevail along with slight seas. Elsewhere, winds are light to gentle and seas are moderate in SW swell. For the forecast, the remnant low of Lorena will dissipate Sat night near Punta Eugenia and winds will diminish to light to gentle speeds across the Baja offshore waters. Winds will also diminish to light to gentle speeds in the Gulf of California. A tropical wave currently along 106W will move westward and bring moderate SE winds across the SW Mexican offshores Sat. Otherwise, moderate to fresh NW winds are forecast to develop offshore Baja California Mon evening into Wed as the remnants of a frontal boundary approaches from the west, thus increasing the pressure gradient across the region. Fresh northerly winds may pulse in Tehuantepec Mon and Tue. ...OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Moderate or weaker winds are ongoing across both the Central America offshore waters and the offshores between Ecuador and the Galapagos Islands. Seas are moderate in SW swell. Otherwise, heavy showers and scattered tstms are ongoing from offshore Colombia and Panama, and the offshore waters between Guatemala and Nicaragua. For the forecast, moderate or weaker winds and moderate seas in S to SW swell will continue across the region through Wed night. Otherwise, scattered to heavy showers are forecast for the Central America offshore waters the next several days. ...REMAINDER OF THE AREA... Please refer to the SPECIAL FEATURES section for further information on Major Hurricane Kiko. Hurricane Kiko is near 14.9N 138.7W at 8 PM PDT, and is moving west-northwest at 10 kt. Maximum sustained winds are 120 kt with gusts to 140 kt, and the minimum central pressure is 946 mb. Aside from Kiko, a subtropical ridge anchored by a 1018 mb high near 27N148W cover the waters N of 20N and W of 124W. A weak cold front crosses the ridge from 30N132W to 27N139W. These two features are providing moderate or weaker N to NE winds N of 20N and W of 120W. Moderate seas are also across the subtropical waters. Otherwise, a tropical wave near 106W is supporting moderate SW winds S of the monsoon. For the forecast, Kiko will move to 15.4N 140.1W Sat morning, 16.1N 142.0W Sat evening, 16.9N 143.9W Sun morning, 17.8N 145.9W Sun evening, 19.0N 148.0W Mon morning, and 20.2N 150.2W Mon evening. Kiko will weaken to a tropical storm near 22.4N 154.8W late Tue. Elsewhere, conditions will significantly improve across the region Sat evening as Kiko`s strong winds move W of the area. Moderate or weaker winds are forecast N of the monsoon and W of 110W Sat night into Tue night. Otherwise, a tropical wave with an associated low will reach near 120W by Sun morning, enhancing winds to fresh speeds S of the monsoon and supporting rough seas as the wave continues a westward track. $$ Ramos