000 AXPZ20 KNHC 210913 CCA TWDEP Tropical Weather Discussion...Corrected NWS National Hurricane Center Miami FL 0405 UTC Sun Jun 21 2020 Corrected Tropical Waves 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 0000 UTC surface analysis and satellite imagery through 0315 UTC. ...TROPICAL WAVES... A tropical wave with axis along 85W north of 03N is moving westward at 10-15 kt. This wave is embedded within a very moist and unstable environment. Scattered moderate to isolated strong convection is seen from 10N to 12N and east to inland Nicaragua and the northwest section of Costa Rica. A tropical wave with axis along 104W from 03N to 17N is moving westward at about 13 kt. This wave is part of a broad area of scattered moderate to isolated strong convection that extends from 08N to 14N and between 102W and 107W. The wave axis is located where the GFS model 700 mb winds reveal a northeast to east-southeast wind shift. This area of disturbed weather has the potential for some development through early next week per the latest Tropical Weather Outlook. A tropical wave with axis along 111W from 03N to 17N is moving westward at 10-15 kt. This wave is passing to the south of a mid to upper-level high pressure ridge. Scattered moderate convection is within 120 nm west and 60 nm east of the wave axis from 09N to 12N. Isolated showers and thunderstorms are within 120 nm east of the wave from 12N to 13N. A tropical wave with axis along 130W/131W from 03N to 17N is moving westward at about 15 kt. Only isolated showers and thunderstorms are within 60-90 nm either side of the wave from 12N to 14N. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough axis extends from northern Colombia westward to 08N78W and northwestward to across Costa Rica, then to 10N86W to 10N97W to 11N101W to 11N110W to 12N120W and to a 1011 mb low near 11N133W where latest scatterometer data indicates that it transitions to the ITCZ and continues to beyond the area at 09N140W. Aside from the convection associated with the tropical waves, scattered moderate to isolated strong convection is within 120 nm south of the trough between 105W-111W and between 125W-128W. Similar convection is within 60 nm north of the trough between 93W-96W. Scattered moderate convection is within 180 nm south of the trough between 98W-102W and within 60 nm south of the trough between 116W-120W. OFFSHORE WATERS WITHIN 250 NM OF MEXICO... A surface ridge is building eastward to around 18N110W. The associated pressure gradient supports moderate NW winds west of Baja California. Mainly light to gentle winds and 4-7 ft seas prevail elsewhere. Moderate to fresh northwest winds will continue through early next week over the waters from Baja California Sur to Punta Eugenia. These winds should diminish slightly by mid-week. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Moderate to fresh southwest winds continue south of the monsoon trough along with wave heights in the range of 6-8 ft due to southwesterly cross-equatorial swell. Northeast to east fresh winds in the Papagayo Region will continue into early next week. REMAINDER OF THE AREA... A ridge extends east-southeastward from a 1025 mb high pressure centered near 33N140W to near the Revillagigedo Islands. The associated pressure gradient is supporting fresh trade winds from 10N to 19N west of 120W. Wave heights are in the 6-7 ft range in this area from mixed swell. A surface trough is analyzed along 120W from 07N to 15N. Scattered showers and isolated thunderstorms are seen within 120 nm east of the trough from 11N to 13N. Gentle to moderate northeast winds are near this trough along with wave heights in the range of 5-7 ft. Moderate to fresh trade winds and 5-7 ft wave heights are elsewhere north of the convergence zone, west of 120W. Moderate southerly flow is south of the the monsoon trough axis. Long-period southwesterly swell dominates the waters south of 10N and east of 100W resulting in wave heights of 6-8 ft. These conditions are expected to change little going into early next week. $$ Aguirre