000 AXPZ20 KNHC 072200 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 2137 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 1800 UTC surface analysis and satellite imagery through 2030 UTC. ...SPECIAL FEATURES... Gulf of Tehuantepec Gale Warning: High pressure over the Gulf of Mexico is forcing a N strong gale over the Gulf of Tehuantepec tonight, then will diminish below gale force Thu evening. Peak seas are anticipated to reach 20 ft tonight. Another gale force wind event is possible late Sat and Sun due to a strong cold front moving across the Gulf of Mexico with peak seas reaching around 15 ft. Gulf of Papagayo Gale Warning: A large N-S pressure gradient across Central America is inducing strong NE winds in the Gulf of Papagayo that will increase to gale force tonight though Wed afternoon. Peak seas are anticipated to reach around 12 ft Wed. Fresh to near gale force NE winds will then prevail through the remainder of the week and into the upcoming 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... A trough axis extends from 1011 mb low pressure over northern Colombia near 09N75W to low pressure near the W coast of Colombia near 03N80W to 03N84W to 05N95W to 05N99W. The ITCZ then continues from 05N99W to 06N111W, then resumes from 07N115W to 07N137W. Scattered moderate convection is from 05N to 12N between 110W and 115W. Isolated moderate convection is from 05N to 12N between 124W and 136W. 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/West of Baja California: A developing low over S central United States will help induce fresh to strong NW winds just west of N Baja California and across the Gulf of California Fri and Sat. A moderate long-period NW swell may begin impacting the waters east of Baja California on Sun. 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. Moderate W to NW swell generated by gales in the Gulf of Tehuantepec will impact waters off Guatemala beginning tonight through Thu. Gulf of Panama: Pulses of fresh N winds are expected to dominate the Gulf of Panama and waters N of 05N through Fri. Elsewhere, winds and seas will be quiescent for next several days. REMAINDER OF THE AREA... High pressure of 1035 mb is centered N of the area near 35N149W with ridging extending SE toward 20N128W. A tight pressure gradient south of the high pressure is producing fresh to strong trades the W central waters. A recent altimeter pass indicates peak seas up to 12 ft near 08N137W. Another surface trough extends near 115W from 05N-09N moving westward along the ITCZ. The trades are forecast to strengthen and expand by the end of the week into the upcoming weekend. The increasing fetch should build a large area of 12 ft seas. A moderate long-period NW swell may begin impacting the waters north of 20N on Sun. $$ Landsea