Tropical Weather Discussion...Corrected
Status
Issued Active alertStart Time
Fri 06/26/2026 06:05 PM EDTEnd Time
Sat 06/27/2026 12:05 AM EDTImpacts
Informational
Full Alert Message
Tropical Weather Discussion...Corrected NWS National Hurricane Center Miami FL 2205 UTC Fri Jun 26 2026 Corrected Tropical Waves section 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 1800 UTC surface analysis and satellite imagery through 2145 UTC. ...TROPICAL WAVES... The southern portion of a Caribbean tropical wave is along 80W reaching southward to near 05N. It is moving westward at 15 to 20 kt. Numerous moderate to strong convection is from 05N to 09N east of 83W to inland Colombia near 76W. A tropical wave has its axis along 90W north of 08N extending northward across eastern Guatemala to the southern portion of the Yucatan Peninsula. It is moving westward around 10 kt. Aside from scattered showers and a few thunderstorms near the axis north of 16N, and also east from there to Belize, no significant convection is occurring near this wave at the present time. A tropical wave has its axis near 110W from 08N to 17N, moving westward around 10 kt. Latest ASCAT data pass indicates a fetch of mostly fresh east to southeast winds east of the wave to near 101W. A mid-level cyclonic circulation was noted in satellite animation imagery near 14.5N107W. Increasing scattered moderate to isolated strong convection is from 11N to 17N between the wave and 105W, and west of the wave to 113W from 10N to 17N. This convection is enhancing the fresh winds to strong speeds in several locations within the area of the fresh winds. A tropical wave has its axis near 127W from 11N to 21N. A weak 1011 mb low is along the axis at 20N as noted in satellite imagery. It is moving westward at estimated motion of about 15 kt. Only isolated weak showers are within 60 nm northwest of the low. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough axis extends from low pressure of 1008 mb in northwest Colombia to across northern Panama and to 09N84W to 08N96W to 08.5N102W to 08.5N112W to 13N119W to 12.5N124W to 09N127W, where it transitions to the ITCZ to 06N131.5W and to beyond 06N140W. Numerous moderate to isolated strong convection is from 05N to 09N between 78W-83W. Scattered moderate convection is within 180 nm north-northeast of the the trough between 115W-120W, and within 60 nm of the trough between 91W-95W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... The pressure difference between high pressure ridging over the Gulf of America and relatively lower pressure present from southeastern Mexico southward to region of the monsoon trough that is over the eastern Pacific is continuing to sustain fresh to strong gap winds in the Gulf of Tehuantepec as was revealed in today's 1540Z ASCAT data pass. Seas to 8 ft are with these winds. In the Gulf of California, fresh southwest winds were detected by a recent ASCAT pass across the central portion of the Gulf from the gradient associated to the diurnal thermal trough. Seas are 2 to 4 ft over the Gulf, except for slightly higher seas of 3 to 5 ft in the southern portion. Light to gentle winds are elsewhere over the Mexican offshore waters along with seas of 5 to 7 ft in long- period south to southwest swell. For the forecast, the fresh to strong north to northeast gap winds are expected to continue in the Gulf of Tehuantepec region through Sun morning. Elsewhere, winds and seas across the Mexican offshore waters should be rather calm through early next week. Large northwest swell is expected to may move into the far northern waters off Baja California Norte beginning Sun night and linger into Tue. ....OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Fresh to strong northeast to east gap winds are across the Gulf of Papagayo and off the southern coast of Nicaragua. Recent altimeter satellite data indicates seas of 6 to 8 ft downstream of these winds from 09N to 11N between 87W and 91W. Moderate or weaker winds are elsewhere. Seas are 7 to 9 ft in long-period southerly swell over the equatorial waters and 5 to 6 ft in SW swell over the remainder of the offshore waters. For the forecast, the pressure difference between high pressure north of the area and relatively lower pressures in the tropics will support fresh to occasionally strong gap winds and rough seas across the Gulf of Papagayo through early Tue. These conditions may possibly reach as far west as 96W through Sun night. Farther south, large southerly swell moving into the equatorial waters will continue through early next week. ...REMAINDER OF THE AREA... A weak 1011 mb low is centered near 20N127W as mentioned above under the Tropical Waves section. A recent ASCAT data pass depicts fresh to strong northeast winds north of the low to 22N and roughly between 125W and 129W. Seas with these winds are 8 to 9 ft. Elsewhere, broad ridging dominates the remainder of the area north of 15N. The moderate pressure gradient between the ridge and lower pressure in the vicinity of the monsoon trough/ITCZ is resulting in moderate to fresh trade winds from 10N to 27N west of 127W, and from 12N to 17N between 113W and 120W. Seas are 5 to 7 ft over these areas, except for higher seas 6 to 8 ft from 14N to 20N west of 131W due to long-period north to northeast swell. Elsewhere, winds across the open Pacific are moderate or weaker. Seas are 6 to 8 ft in mixed north and southwest swell. For the forecast, the tropical wave near 110W is forecast to encounter more favorable conditions for gradual development during the next several days as it moves generally west- northwestward across the central portion of the eastern Pacific basin. A tropical depression could form during the early to middle part of next week. By late next week, the system is expected to reach a much less favorable environment for development. Outside of this system, little change in winds are expected for the next several days. Large southerly swell moving through far south-central waters, with seas of 8 to 9 ft may reach to near 03N between 100W and 127W by Sun night and into Mon.