000 AXPZ20 KNHC 030222 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 0405 UTC Sat Feb 3 2024 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 0220 UTC. ...SPECIAL FEATURES... Gale Warning and Large NW swell: Large NW swell with a period of 14 to 16 seconds is moving across the E Pacific open waters. Seas greater than 12 ft cover the waters N of 19N and W of 116W, with seas peaking near 15 ft. These 12 ft seas will subside tonight, and by Sat morning seas associated with this swell will subside below 12 ft. However, early on Sat, a new set of large NW swell will enter the far NW waters behind a front over the NW waters. Seas with the next swell will peak near 20 ft Sun night. Aside from the seas, gale- force winds will develop ahead of and behind the front N of 29N Sat night and Sun. The 12 ft seas will spread S and E while subsiding. The 12 ft or greater seas will cover much of the waters N of 06N and W of 130W by Tue evening before subsiding below 12 ft. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The equatorial trough extends from the coast of Colombia near 08N78W to 08N84W to 06N101W. The ITCZ continues from 06N101W to beyond 05N140W. Scattered moderate convection is from 02N to 05N between 92W and 97W, and within 30 nm either side of the ITCZ between 115W and 125W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... See the Special Features Section for information on an ongoing large swell event. Fresh to strong winds, and seas of 4-5 ft, are found over the northern Gulf of California. Gentle to moderate winds, and seas of 2-4 ft, are over the remainder of the Gulf. Moderate to fresh winds, and seas of 11-14 ft, are west of Baja California Norte. Moderate winds, and seas of 8-11 ft are noted west of Baja Califonria Sur. Gentle to moderate winds, and seas of 5-8 ft, prevail over much of the remainder of the open waters off Mexico. For the forecast, large NW swell west of Baja California Norte will subside below 12 ft Sat morning, but rough seas will continue across the waters off the Baja California peninsula and then across the waters off SW Mexico through the weekend. Low pressure will develop over the region of Oaxaca early Sat morning, which will bring fresh to strong SW winds along the coast with seas to 7 ft through Sun. The next gap wind event in the Gulf of Tehuantepec is expected to begin Mon, with gale- force winds possibly developing during the afternoon hours, and continuing through Tue night. ...OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Moderate NE to E winds are in the Gulf of Papagayo region, where seas are in the 5-6 ft range. Gentle to moderate winds prevail in the Gulf of Panama, with seas in the 3-5 ft range. Elsewhere, light to gentle winds, and seas of 4-6 ft prevail. For the forecast, moderate NE winds in the Papagayo region will diminish to light to gentle speeds tonight. Gentle to moderate winds in the Gulf of Panama will diminish to light to gentle speeds on Sat. Looking ahead, a gale-force gap wind event is forecast to begin in the Tehuantepec region Mon afternoon. Swell generated from this gap wind event will bring rough seas to the outer offshore waters of Guatemala and El Salvador Tue and Wed. ...REMAINDER OF THE AREA... See the Special Features Section for information on an ongoing large swell event and a gale warning. Aside from the large swell, high pressure of 1020 mb is centered near 25N128W. A cold front has just enetered the far NW waters. The pressure gradient between the area of high pressure and the cold front is supporting fresh to strong winds within 60 nm east of the front. The pressure gradient between the area of high pressure and lower pressure in the vicinity of the ITCZ is supporting moderate to fresh winds N of the ITCZ to near 18N and W of 120W. Light to gentle winds are in the vicinity of the high center. Gentle to moderate winds prevail elsewhere. Aside from the area of 12 ft seas, seas greater than 8 ft cover the waters N of 07N and W of 120W as well as N of 15N between 115W and 120W. Elsewhere, seas are in the 6-8 ft range. For the forecast, seas greater than 8 ft will spread SE through the first half of the weekend, covering much of the waters N of 05N and W of 110W by Sat night before subsiding. Low pressure with associated cold front over the far NW waters will shift eastward with fresh to strong winds ahead and behind the front. The front will usher in another set of large NW swell, with gale force winds expected over the waters N of 29N as discussed in the SPECIAL FEATURES section above. $$ AL