000 AXPZ20 KNHC 042114 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 2205 UTC Fri Mar 4 2022 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 2100 UTC. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A surface trough extends from a 1006 mb low that is over western Colombia near 06N76W, westward to 06N87W to 04N97W and to 04N110W, where latest scatterometer data indicates that it transitions to the ITCZ and continues to 06N120W to 06N130W to to 06N140W. Scattered moderate to isolated strong convection is noted from 01N to 06N between 83W-89W. Scattered moderate convection is within 60 nm south of the trough between 78W-83W and within 30 nm north of the trough between 94W-96W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO Fresh to strong north winds are over the northern part of the Gulf of Tehunatepec. Wave heights there have lowered slightly to 5-7 ft. Strong southwest winds are over the far northern Gulf of California in advance of a cold front that extends from eastern Arizona southwestward to across central Baja California and to the offshore waters near 23N123W. Wave heights in the far northern part of the Gulf are in the 4-6 ft range. Northwest winds of 20-25 kt are behind the front over the offshore waters of Baja California Norte as were observed by recent ship observations. Wave heights with these winds are in the 11-14 ft due to a northwest swell. Wave heights are in the 8-12 ft range due to a northwest to north swell north of 25N and east of 120W. Elsewhere across the waters, mainly gentle winds prevail along with wave heights of 5-7 ft. Light to gentle northwest to north winds over the southern Gulf of California will become moderate to fresh northwest winds beginning tonight and through early next week, with wave heights of 3-4 ft slowly building, reaching to 4-6 ft Tue and 5-7 Tue night. For the forecast, the fresh to strong north winds in the Gulf of Tehunatepec will continue through early Sat, then become light and variable in the afternoon. Elsewhere, mainly gentle winds will change little through Mon, with the exception of moderate northwest to north winds remaining offshore Cabo Corrientes. Fresh to strong northwest to north winds will expand in coverage west of Baja California by tonight and continue through the weekend behind a dissipating cold front. Northwest swell is accompanying the front, with wave heights of 10-14 ft west of Baja California. Wave heights of 8-10 ft will build southward, off Baja California Sur on Sat. Fresh to strong southwest winds are expected in the northern Gulf of California ahead of the front through tonight, and will then diminish to fresh speeds Sat. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, and WITHIN 750 NM OF ECUADOR Fresh to strong northeast to east winds are across the Papagayo region, with wave heights to 7 ft. Moderate north winds are in the Gulf of Panama, with wave heights of 4-6 ft. Mainly light to gentle winds are noted elsewhere, along with wave heights of 3-5 ft due to a south to southwest swell, with the exception of wave heights of up to 6 ft offshore of Ecuador. For the forecast, the fresh to strong northeast winds in the Gulf of Papagayo region will continue into early Sat, then diminish to fresh speeds Sat afternoon through early Mon, and moderate speeds through Tue night. The moderate north winds in the Gulf of Panama will pulse to moderate to fresh speeds tonight into early Sat. Gentle winds will continue elsewhere. Wave heights offshore of Ecuador to the Galapagos Islands will subside slightly during the weekend. REMAINDER OF THE AREA A cold front extends from central Baja California southwestward to 23N134W. Northwest to north winds of 20-30 kt are behind the front along with wave heights of 8-12 ft, with the exception of higher wave heights of 11-14 ft in the far northeast part of the area. Broad high pressure is located east of the front to near the Revillagigedo Islands. Moderate winds dominate the open waters ahead of the front. For the forecast, the cold front will weaken and dissipate as it moves east of the area during the weekend allowing winds behind it to diminish to mainly fresh speeds. The wave heights behind the front will gradually subside through the weekend. A tight gradient over the western part of the area between strong high pressure over the area west of 130W, and low pressure west of 140W is leading to fresh to strong east to southeast winds north of 24N and west of 138W, with wave heights of 8-10 ft. By early Sun, these conditions are expected to be north of 26N and west of 138W. Wave heights to 9 ft in east to southeast swell mixing with northeast swell are expected north of 12N and west of 131W by this same time. $$ Aguirre