--------------------------------------------------------------------------- TROPICAL WEATHER DISCUSSION (EASTERN PACIFIC AREA) MESSAGES T1T2: AX A1A2: PZ Date: 2026-04-12 --------------------------------------------------------------------------- Message File: T_AXPZ20KNHC120240_C_KWBC_20260412024015_9109880-1006-TWDEP.txt ****0000005747**** AXPZ20 KNHC 120240 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 0405 UTC Sun Apr 12 2026 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 0000 UTC surface analysis and satellite imagery through 0200 UTC. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A surface trough extends from 10N75W to 01N83W to 03N93W. The ITCZ extends from 03N95W to 08N136W to beyond 06.5N140W. Scattered moderate isolated strong convection is occurring from 01N to 05N between 82W and 93.5W, from 03N to 07.5N between 94W and 116W, and from 05N to 10N between 131W and 140W. Scattered moderate convection is S of 03S between 87W and 106W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... A very weak surface ridge extends eastward into the waters of Baja California, to the south of a cold front approaching the region. This pattern is supporting light to gentle NW to N winds across the waters of Baja, except for moderate NW winds between Punta Eugenia and Cabo San Lazaro. Gentle N to NE winds then extend beyond the Revillagigedo Islands. Moderate seas to 5 ft in mixed NW and SW swell prevail across these waters. Light to gentle winds are in the Gulf of California with slight seas, except in northern portions where fresh SW gap winds have recently developed. Farther E, gentle to locally moderate NW winds prevail across the waters from Cabo Corrientes to Puerto Angel. Strong N winds have increased across the Tehuantepec region this evening and extend offshore to 15N. Seas are 6 to 8 ft there. An upper level trough shifting eastward into the area now extends from Baja Sur northward into NW Mexico, with associated clouds and showers now across interior Mexico. For the forecast, gentle to moderate NW winds and moderate seas are expected off Baja California through Mon, before winds freshen modestly as high pressure gradually strengthens across the region through midweek. Fresh to strong SW to W gap winds are expected in the northern Gulf of California tonight through Mon night, ahead of a couple of weak frontal boundaries that will approach Baja California Norte. Seas will build up to 5 or 6 ft with these winds. Elsewhere between Baja and Puerto Angel, winds will be moderate or weaker with moderate seas through the middle of next week. Pulsing fresh to strong northerly gap winds will prevail across and downwind of the Tehuantepec region through early Mon morning, with seas building up to 9 ft during the early mornings. Afterwards, mainly moderate and variable winds are expected through midweek. ....OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Fresh to strong NE to E gap winds prevail across the Papagayo region and extend downwind to near 88.5W, producing rough seas of 7 to 8 ft. Moderate to fresh N to NE winds and moderate seas of 4 to 6 ft in SW swell prevail in the Gulf of Panama, and extend beyond the Azuero Peninsula to 04N. Light to gentle winds and moderate seas 4 to 5 ft in SW swell dominate the remainder of the offshore forecast waters. Scattered moderate convection extends from near the coast of western Panama southward and well offshore. For the forecast, fresh gap winds are expected to pulse to strong during the nighttime and early morning hours across the Papagayo region and downwind to 90W through Tue, as broad high pressure continues to dominate the NW Caribbean. Winds up to 30 kt, and seas up to 9 ft are forecast tonight and again Sun night. In the Gulf of Panama, moderate northerly winds, pulsing to fresh each night, are expected throughout the forecast period. Light to gentle winds and moderate seas will prevail elsewhere. Cross- equatorial SW swell will raise seas to 6 to 7 ft between Ecuador and the Galapagos Islands Tue through Wed. Pulses of active convection will continue across the waters S of 09N through Mon, and will propagate westward. ...REMAINDER OF THE AREA... Weak high pressure NW of the area extends a ridge southeastward through 30N140W and into the area to near 123W, south of an approaching cold front along 31N. A broad upper level trough continues across the area N of 18N between 110W and 125W, with associated clouds and weather recently shifting inland across interior NW Mexico. The pressure gradient between the ridge and lower pressures in the vicinity of the ITCZ supports moderate to fresh winds N of the ITCZ to about 14N between 95W and 128W, and south of 22N to the west of 128W. Moderate seas in mixed NW and S swell generally prevail across the area waters, with seas near 8 ft within the trade wind zone between 95W and 115W. For the forecast, a broad and weak high pressure ridge will dominate the weather pattern across the northern forecast waters through early Mon, with little change in winds and seas, before the high shifts southeast Mon through midweek to strengthen the pressure gradient modestly. Moderate winds are expected in the trade wind zone W of 95W through Mon. On Sun, a weakening cold front will enter the northern waters W of 125W, and move into the Baja Norte early Mon then across northern Gulf California late Mon. Moderate N winds and moderate seas 7 to 8 ft in NW swell are forecast in the wake of the front. $$ Stripling ########################### END OF MESSAGE SET ############################ --------------------------------------------------------------------------- Message File: T_AXPZ20KNHC120857_C_KWBC_20260412085821_9109880-1024-TWDEP.txt ****0000006228**** AXPZ20 KNHC 120857 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1005 UTC Sun Apr 12 2026 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 0600 UTC surface analysis and satellite imagery through 0730 UTC. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A surface trough extends from 10N74W to 01.5N84W to 04N95W. The ITCZ extends from 04N95.5W to 01.5N111W to 04N128W to 09N135W to beyond 08N140W. A southern hemispheric ITCZ extends from 03.4S99W to 03S101W to beyond 03.4S107W. Scattered moderate convection is noted from 01N to 06N between 84W and 90W. Scattered moderate isolated strong convection is noted from 02.5N to 07.5N between 91W and 121W, and from 05N to 10N between 132W and 140W. Scattered moderate convection is S of 03S between 101W and 104W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... A very weak surface ridge extends eastward into the waters of Baja California, to the south of a cold front approaching the region from the northwest. This pattern is supporting light to gentle NW to N winds across the waters of Baja, then becoming gentle N to NE winds from Baja Sur beyond the Revillagigedo Islands. Moderate seas to 5 ft in mixed NW and SW swell prevail across these waters. Light to gentle winds are in the Gulf of California with slight seas, except in northern portions where fresh to strong SW gap winds have developed tonight. Seas have built quickly there to 4 to 6 ft. Farther east, gentle NW winds prevail across the waters from Las Tres Marias to Puerto Angel, except moderate winds near the coast of Cabo Corrientes. Strong N gap winds have expanded offshore of the Tehuantepec region to 14N, where seas are now 6 to 9 ft. An upper level trough shifting slowly eastward across the area now extends from Baja Sur northward into NW Mexico, with associated clouds and showers now across interior Mexico. For the forecast, a cold front will move into the Baja Norte waters early Mon then gradually dissipate across central Baja and the Gulf of California Tue. Expect light to gentle NW to N winds across the Baja waters ahead of the front, before winds begin to freshen Mon evening through Tue. High pressure behind the front will dominate the region through the rest of the week. Fresh to strong SW to W gap winds are expected in the northern Gulf of California tonight through Mon night, ahead of the front, with winds then becoming moderate to fresh from the N through the entire Gulf Tue morning through Wed. Elsewhere between Baja Sur and Puerto Angel, winds will be moderate or weaker with moderate seas through Tue. Pulsing fresh to strong northerly gap winds will prevail across and downwind of the Tehuantepec region through Tue morning, with seas building to 8 ft during the early mornings. Afterwards, mainly moderate and variable winds are expected through midweek. ....OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Fresh to strong NE to E gap winds prevail across the Papagayo region and extend downwind to near 90W, producing rough seas of 7 to 9 ft. Moderate to fresh N to NE winds and moderate seas of 4 to 6 ft in SW swell prevail in the Gulf of Panama, and extend beyond the Azuero Peninsula to 04N. Light to gentle winds and moderate seas 4 to 5 ft in SW swell dominate the remainder of the offshore forecast waters. Scattered moderate convection continues offshore of western Panama and Costa Rica. For the forecast, broad high pressure will continue N of the area through Wed before weakening, and maintain fresh gap winds pulsing to strong during the nighttime and early morning hours across the Papagayo region and downwind to 90W. Winds up to 30 kt, and seas up to 9 ft are forecast early this morning and again Sun night. In the Gulf of Panama, moderate northerly winds, pulsing to fresh each night, are expected throughout the forecast period. Light to gentle winds and moderate seas will prevail elsewhere. Cross-equatorial SW swell will raise seas to 6 to 8 ft between Ecuador and the Galapagos Islands Tue through Wed. Pulses of active convection will continue across the waters S of 09N through Mon, and will propagate westward. ...REMAINDER OF THE AREA... High pressure NW of the area extends a ridge southward through 30N142W and into the area W of 130W. Est of the ridge, a weakening cold front has crossed into the local waters, passing through 30N126W to 28N131W. A very weak ridge prevails ahead of this front and extends to near the Revillagigedo Islands. An upper level trough continues to move slowly eastward across the area N of 18N and east of 118W, with associated clouds and weather recently shifting well inland across interior Mexico. The pressure gradient between the ridge and lower pressures in the vicinity of the ITCZ supports moderate to fresh winds N of the ITCZ to about 15N between 98W and 124W, and south of 22N to the west of 124W. Moderate seas in mixed NW and S swell generally prevail across the area waters, with seas 7 to 8 ft within the trade wind zone between 90W and 115W. For the forecast, a broad and weak high pressure ridge will dominate the weather pattern across the northern forecast waters through early Mon, with little change in winds and seas, before the high shifts southeast Mon through midweek to strengthen the pressure gradient modestly. Moderate winds are expected in the trade wind zone W of 95W through Mon. A weakening cold front across the northern waters W of 125W will move into the Baja Norte early Mon then across northern Gulf California late Mon. Moderate N to NE winds and moderate seas 7 to 8 ft in NW swell are forecast in the wake of the front. $$ Stripling ########################### END OF MESSAGE SET ############################