Tropical Weather Discussion

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Tropical Weather Discussion NWS National Hurricane Center Miami FL 0405 UTC Fri Jun 12 2026 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 0333 UTC. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 07.5N78W to 16N97W to 11N120W to 08.5N140W. Numerous moderate convection is noted from 04N to 13N between 129W and 140W. Scattered moderate convection is depicted from 10N to 14N between 90W and 97W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... A weak pressure gradient prevails across the area. With the weak pressure gradient, light to gentle winds prevail over the open waters off Mexico. Gentle to locally moderate winds are in the Gulf of California as well as off Cabo San Lucas. Seas are in the 5-7 ft range over the open waters off Mexico, and 3 ft or less in the Gulf of California. For the forecast, light to gentle winds will prevail across the waters of Baja California. Gentle to moderate, SW to S winds are expected inside the Gulf of California and near the tip of Baja California Sur through the forecast period. Gentle to moderate NW to W winds will pulse each evening over the offshore waters of Baja California beginning Fri. ....OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Gentle to moderate SW winds prevail between the Galapagos Islands and Colombia. Light to gentle variable winds are found elsewhere. Seas are in the 5-7 ft range between the Galapagos Islands and Colombia, reaching 8 ft south of the Galapagos Islands. Elsewhere, seas are in the 4-6 ft range in decaying S-SW swell. For the forecast, gentle to moderate winds and moderate seas will prevail across the offshore waters into the weekend, except locally rough seas in new southerly swell near the Galapagos Islands tonight. Winds may pulse to moderate to locally fresh in diurnal offshore flow in the immediate Gulf of Papagayo and near the Gulf of Guayaquil during the upcoming weekend into early next week. ...REMAINDER OF THE AREA... A ridge of high pressure enters the NW waters near 30N140W and extends SE to near 23N130W. Broad troughing prevails east of 122W. The pressure gradient between the area of high pressure, and broad troughing is supporting moderate to fresh winds N of 27N and W of 125W. The pressure gradient between the ridge and lower pressure withing the monsoon trough is supporting gentle to moderate winds S of the monsoon trough to the Equator. Light to gentle winds are found elsewhere N of the monsoon trough. Northerly swell is bringing rough seas over the waters N of 28N between 122W and 135W. Mainly moderate seas are found elsewhere N of the equator. S of the equator, seas are in the 7-8 ft range in SW swell. For the forecast, the pressure gradient will loosen W of the elongated troughing, with winds diminishing there slightly through Fri. Winds will then be moderate or weaker across the entire open waters, except at least moderate to fresh near transient embedded low pressure areas along western portion of the monsoon trough. Northerly swells mixed with the longer period southerly swells with seas of 7-9 ft will linger across the N-central waters through Fri night before decaying. Otherwise, moderate seas will dominate the open waters, locally rough in the S-central waters through the end of the week, as well as near any of the embedded lows within the monsoon trough.