000 AXPZ20 KNHC 070212 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 148 UTC Tue Jan 7 2020 Tropical Weather Discussion for the eastern Pacific Ocean from the Equator to 32N, east of 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 0130 UTC. ...SPECIAL FEATURES... Gulf of Tehuantepec Gale Warning: High pressure is building into Texas this evening and will dig into northeastern Mexico tonight. This will tightening the pressure gradient over southern Mexico and force gale force N winds into the Gulf of Tehuantepec overnight. These gales will continue into Wed night, with near storm conditions possible Tue night. Seas of 12 ft or greater will develop by early Tue morning, then increase and spread southward with time, peaking near 12 feet early Wed, then diminishing below 12 feet by Thu morning. There is a potential of another round of gale force gap winds by Sat night. Gulf of Papagayo Gale Warning: High pressure will build toward northern Central America Tue, increasing the pressure gradient over Nicaragua and Costa Rica. This will cause gale force NE to E winds to develop in the Gulf of Papagayo Tue night and continue through Wed morning. Seas of 12 to 13 ft can be expected during this period. Winds and seas will only subside slightly, with strong winds prevailing through the weekend. Please read the latest High Seas Forecast issued by the National Hurricane Center under AWIPS/WMO headers FZPN03 KNHC/HSFEP2 or at website https://www.nhc.noaa.gov/text/MIAHSFEP2.shtml for further details on both Gale Warnings. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 1011 mb low pressure near 04N78W to 05N91W. The ITCZ then continues from 05N91W to 05N105W to 06N125W to beyond 06N140W. Scattered moderate convection is noted from 06N to 15N between 107W and 113W and from 04N to 09N between 125W and 137W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO... See the Special Features section for more details about the Gale Warning for the Gulf of Tehuantepec. Gulf of California: The pressure gradient between high pressure over the SW U.S. and low pressure trough over NW Mexico is tight, leading to strong NW winds in the Gulf of California this evening. These winds will continue through Tue morning before decreasing. Seas of up to 8 feet will also diminish tonight. After winds and seas subside Tue, the next hazardous marine weather is not expected until at least Fri, when more fresh to strong NW to N winds are likely to develop. NW will will continue to impact areas offshore Baja California North this evening, bringing seas of 8 to 9 ft before subsiding tonight. New NW to N swell will arrive Wed afternoon bringing similar seas to the area until early Fri. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... See the Special Features section for more details about the Gale Warning for the Gulf of Papagayo. Seas of 8 to 9 ft offshore Guatemala from remnant swell generated from earlier gales in the Gulf of Tehuantepec will subside this tonight. New swell from redeveloping Gulf of Tehuantepec gales will reenter the waters offshore Guatemala Tue evening and continue through early Thu morning, potentially bringing seas of up to 12 ft. Gulf of Panama: Pulses of fresh northerly winds are expected to dominate the Gulf and waters N of 05N into Sat. Elsewhere, gentle to moderate S to SW flow will continue over the offshore waters of and S of Costa Rica through the week. REMAINDER OF THE AREA... High pressure centered remains centered just N and NW of the area this afternoon, with ridging extending SE to near the Revillagigedo Islands. A tight pressure gradient between this ridge and the ITCZ to the south is leading to fresh to strong tradewinds W of 120W. Seas of 8 to 11 ft will also prevail in this area. Some seas in excess of 12 ft are possible Thu night as pressure lowers in association with the ITCZ. Meanwhile, northerly swell to the E of 125W and N of 25W this evening is leading to seas of up to 10 ft. These seas will persist through tonight. New swell will arrive in the same area Wed afternoon and continue through early Fri, likely bringing 8 to 10 ft seas to the region. $$ KONARIK