000 AXPZ20 KNHC 112003 CCA TWDEP Tropical Weather Discussion...Corrected NWS National Hurricane Center Miami FL 1605 UTC Fri Sep 11 2020 Corrected Special Features section 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 1200 UTC surface analysis and satellite imagery through 1545 UTC. ...SPECIAL FEATURES... A 1007 mb low is centered along the monsoon trough near 14N106W. This low is part of a large area of disorganized weather that is being further aided by a tropical wave along 111W. Active convection occurring with this area of disturbed weather consists of scattered moderate to strong convection from 11N to 15N between 108W-112W. Scattered moderate convection is within 30 nm of line from 14N107W to 18N107W. Overnight scatterometer data showed a very broad cyclonic circulation about the low and monsoon trough, with peak winds around 20 kt and seas 6-7 ft between the low and the coast of western Guerrero, and winds to around 20 kt in the SW quadrant 100 to 200 NM from the center, where seas are 6-8 ft. Environmental conditions appear conducive for development of this system, and a tropical depression could form over the weekend or early next week while the system moves west-northwestward at 10 to 15 kt and away from the coast of Mexico. The system has a medium chance of developing over the next two days. For more information, see the latest Tropical Weather Outlook at https://hurricanes.gov. ...TROPICAL WAVES... A tropical wave has its along 85W north of 03N to across Central America. It is moving west at 10-15 kt. Earlier scattered moderate to strong nocturnal convection that developed ahead of the wave and has moved west-southwest and over water, extending within 180 nm of the coast between northern Costa Rica and El Salvador. Latest satellite imagery shows this convection is weakening. Small clusters of moderate convection are also noted over the southwest Caribbean waters. A tropical wave has its axis along 111W from 04N to 19N, moving westward at 10-15 kt. Convection associated with this wave is described above associated with the 1008 mb low pressure system. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough axis extends from a 1009 mb low over northwestern Colombia near 10N75W to 08N81W to 07N90W to 12N100W to low pressure near 14N106W 1007 mb to 15N112W to low pressure near 18N116W 1009 mb to 14N124W to 12N132W to 11N140W. Scattered moderate to strong convection is within 180 nm south of the trough between 135W- 140W, within 120 nm south of the trough between 108W-112W and within 30 nm north of the trough between 108W-110W. Scattered moderate to isolated strong convection is within 180 nm south of the trough between 97W-101W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO... See Special Feature discussion of low near 14N106W. Generally tranquil marine conditions are expected across the offshore waters for the next several days as a weak pressure gradient prevails. However, the low pressure near 14N106W is expected to gradually become better organized and will likely increase winds and seas across the outer waters from offshore of Manzanillo shifting west-northwest to the Clarion Island area. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, and WITHIN 750 NM OF ECUADOR... Tranquil conditions should prevail for the next several days with light to gentle winds north of the monsoon trough along about 10N, and gentle to moderate south to southwest winds south of the monsoon trough. No significant long-period swell is expected to impact these waters during the next several days, although small swell will continue to impact the waters for the next several days. REMAINDER OF THE AREA... Low pressure of 1009 mb is centered near Clarion Island near 18N116W. Scattered moderate convection is within 120 nm of the low in the NW quadrant. Overnight scatterometer data indicated a broad and weak cyclonic circulation consisting of gentle to moderate winds within about 270 nm of the low in the western semicircle. Some development of this system is possible during the next few days before it interacts with, and possibly becomes absorbed by the larger weather disturbance to its east discussed in the Special Feature section. High pressure of 1020 mb centered near 32N132W dominates the waters north of 20N, west of 120W. Gentle to moderate NE trades continue north of the monsoon trough axis with seas 5-7 feet. Moderate to fresh south flow persists south of the trough with 5-7 ft seas. Long-period southwest swell is present east of 120W, contributing to combined seas of 6-8 feet near the equator. Seas will subside slightly Fri through Tue. $$ Aguirre