


Tropical Weather Discussion
Issued by NWS
Issued by NWS
Versions:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
870 AXPZ20 KNHC 031524 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1605 UTC Wed Sep 3 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 1200 UTC surface analysis and satellite imagery through 1500 UTC. ...SPECIAL FEATURES... Hurricane Storm Kiko: Hurricane Kiko is centered near 13.9N 130.6W at 03/1500 UTC, moving west at 6 kt. Estimated minimum central pressure is 970 mb. Maximum sustained wind speed is 95 kt with gusts to 115 kt. Seas are peaking near 30 ft within 20 nm north of center. Numerous moderate to strong convection is noted from 12.5N to 15N between 129W and 131.5W. Scattered moderate to strong convection is elsewhere from 11N to 16N between 128W and 134W. Kiko will intensify while maintaining a general westward motion across the eastern Pacific, crossing 140W and move into the central Pacific basin Sat. Kiko is forecast to peak in intensity near 115 kt Thu through Fri, before starting to weaken through the weekend. 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. Hurricane Lorena: Hurricane Lorena is centered near 22.3N 111.6W at 03/1500 UTC, moving northwest at 14 kt. Estimated minimum central pressure is 988 mb. Maximum sustained wind speed is 70 kt with gusts to 85 kt. Maximum seas are near 23 ft within 20 nm NE of center. Numerous moderate to strong convection is noted from 21N to 23N between 111W and 113W. Scattered moderate to strong convection is elsewhere from 17N to 25N between 107W and 114W. Lorena is expected to move northwestward during the next 24 hours, and then is expected to recurve and cross over central Baja California Fri. Heavy rainfall is expected across the offshore waters and coastal zones of SW and west- central Mexico and across the waters of Baja California Sur. Heavy rainfall associated with Tropical Storm Lorena will continue to impact Baja California Sur, moving into southwestern Sonora by Thursday. This will increase the risk of life- threatening flash floods and mudslides across Mexico, especially in areas of higher terrain. Life- threatening surf and rip current conditions will affect portions of the southern and western coasts of Baja California Sur during the next couple of days. 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 Lorena NHC Forecast/Advisory and Public Advisory at www.hurricanes.gov for more details. ...TROPICAL WAVES... The axis of a tropical wave is near 96W from 06N northward into Mexico, moving west 10 to 15 kt. Nearby convection is discussed in the ITCZ/monsoon trough section below. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 10N85W to 10N99W to 14N126W, then resumes from 12N133W to beyond 11N140W. Scattered moderate isolated strong convection is noted from 05N to 09N between 82W and 89W, from 08N to 15N between 93W and 100W, and from 07N to 14N between 103W and 121W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Please see SPECIAL FEATURES above for information on Hurricane Lorena south of Baja California. Outside of Lorena, moderate to fresh S to SE winds prevail off Cabo Corrientes to Cabo San Lucas and the adjacent waters, where seas are 6 to 9 ft and building. Strong thunderstorms are impacting Baja California Sur and the adjacent waters to the east and west. Outside of winds near Lorena, moderate winds are across the Baja California waters. Seas are 4 to 5 ft seas in southerly swell across these waters, except 6 to 9 ft from southern Baja Sur to the western flank of Lorena. Gentle to moderate southerly winds prevail across the Gulf of California, with seas in the 3-5 ft range, reaching 7 ft at the entrance of the Gulf. Light winds prevail elsewhere over the open waters off Mexico. For the forecast, Hurricane Lorena will move to 23.4N 112.7W this evening, 24.5N 113.7W Thu morning, 25.6N 113.9W Thu evening, weaken to a tropical storm near 26.4N 113.9W Fri morning, 27.5N 113.5W Fri evening, and 28.4N 112.8W Sat morning. Lorena will weaken to a remnant low near 30.4N 110.6W early Sun. Elsewhere, moderate N winds will prevail across the north and central portions of the Baja waters through Wed before weakening near the coast Thu through Fri. Fresh to strong southerly winds are expected to develop inside the southern Gulf of California tonight as Lorena approaches the Baja Pacific coast. ...OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Moderate to locally fresh gap winds extend from the Papagayo region offshore to 90W. Light to gentle winds prevail elsewhere N of the monsoon trough. South of the monsoon trough, gentle to moderate winds prevail. SW swell continues to dominate the waters of Central and South America, with seas in the 4 to 6 ft range, except to 7 ft south and west of the Galapagos Islands. For the forecast, SW swell offshore of Ecuador and Colombia will increase modestly today and Thu. Moderate gap winds across the Papagayo region will pulse to fresh speeds at night through Thu. Light to gentle winds will prevail elsewhere north of the monsoon trough. Moderate to fresh S to SW winds are expected south of the monsoon trough through the week. ...REMAINDER OF THE AREA... Please refer to the SPECIAL FEATURES section for information on Hurricane Kiko. Aside from Kiko, high pressure prevails over the waters N of 20N, centered on a 1022 mb high near 36N133W. Outside the winds of Kiko, moderate to fresh winds prevail across the waters between 08N and 22N and west of 127W. Gentle to moderate winds prevail elsewhere north of 12N. Moderate to fresh winds are found south of 12N. Seas across the forecast waters are in the 4-6 ft range, except 6 to 8 ft in mixed SE and SW swell S of 14N between 105W and 135W. For the forecast, Hurricane Kiko will move to 13.9N 131.8W this evening, 14.0N 133.4W Thu morning, 14.2N 135.0W Thu evening, 14.6N 136.9W Fri morning, 14.8N 138.8W Fri evening, and cross into the central Pacific near 15.2N 140.6W Sat morning. Elsewhere, weak high pressure will remain north of the area through Thu, with moderate trade winds expected over the discussion waters, then weakening into Sat. S to SW swell over the waters south of 10N will support rough seas south of 12N between 100W and 120W. $$ AL