--------------------------------------------------------------------------- TROPICAL WEATHER DISCUSSION (EASTERN PACIFIC AREA) MESSAGES T1T2: AX A1A2: PZ Date: 2026-03-31 --------------------------------------------------------------------------- Message File: T_AXPZ20KNHC310317_C_KWBC_20260331031830_49676782-210-TWDEP.txt ****0000004866**** AXPZ20 KNHC 310317 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 0405 UTC Tue Mar 31 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 0000 UTC. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A surface trough extends from 07.5N77.5W to 09N86W to 03N100W to 04N106W. The ITCZ extends from 04N106W to 04N120W to 07N132W to beyond 05N140W. Scattered moderate isolated strong convection is noted from 02S to 03.4S between 88W and 94W, and from 02N to 08N between 128W and 139W. Scattered moderate convection is noted from 04N to 09N between 90W and 108W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Moderate to fresh N gap winds are in the immediate Gulf of Tehuantepec due to a lingering locally tight pressure gradient. Fresh to locally strong SW winds are noted near Cabo San Lucas, as well as in the northern Gulf of California from 29N to 31N. Gentle to moderate winds dominate the remainder of the waters. Moderate seas dominate the offshore waters with slight seas in the Gulf of California. For the forecast, moderate to fresh N winds in the Gulf of Tehuantepec will pulse to strong locally tonight, diminishing by Tue afternoon. Moderate to fresh SW winds in the northern Gulf of California will increase to fresh to strong Tue night before diminishing. Moderate to fresh winds will pulse near Cabo San Lucas and near Cabo Corrientes at times through mid-week. Moderate to fresh NW winds will dominate offshore Baja California by the end of the week as high pressure builds W of the peninsula. Moderate seas will dominate the offshore through the remainder of the week, except building locally to rough off Baja California Norte Fri through Sat night. Slight seas will prevail in the Gulf of California, except briefly to moderate in the northern Gulf with the fresh to strong winds. ....OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Fresh to locally strong NE-E winds prevail over the Papagayo region, with moderate to fresh winds reaching SW-W to near 09N92W. Moderate to fresh N-NE winds prevail from the Gulf of Panama to near the Azuero Peninsula. Winds are mainly light to gentle elsewhere. Slight seas are offshore Colombia with moderate seas elsewhere. For the forecast, fresh NE-E winds will pulse to strong across and downwind of the Papagayo region to near 90W through early Wed with locally rough seas, with winds becoming moderate to fresh thereafter. In the Gulf of Panama, moderate N-NE winds will continue to pulse to fresh at night through Tue night. Slight to moderate seas will prevail through Tue night. Large S-SW swell will spread into the waters from offshore Ecuador to the Galapagos Islands Wed morning and reach the remaining area waters and Central American coasts on Thu. This swell will build seas to rough from offshore Ecuador to the Galapagos Islands through Thu. ...REMAINDER OF THE AREA... A weak remnant frontal trough extends over the NW waters from near 30N134W to 23.5N140W. This feature has weakened high pressure with light to gentle winds dominating the waters N of 18N. Gentle to moderate winds prevail elsewhere over the open waters. N to NE swell generated by a now ended gale-force gap wind event in the Gulf of Tehuantepec have spread SW to near 08N103W with locally rough seas. Otherwise, moderate seas in mixed swell prevail across the remainder of the waters. For the forecast, gentle to moderate winds will dominate the open waters through mid-week as weak high pressure across much of the area slowly builds into the Baja California waters. A series of weak frontal boundaries will move into the NW waters and weaken W of 130W throughout the week. The old N to NE swell generated by a now ended gale-force gap wind event in the Gulf of Tehuantepec will subside overnight. Moderate seas will continue otherwise through the early part of the week. Large southerly swell will move into the waters S of the Equator late Tue night into Wed, and reach 10N on Thu, gradually subsiding thereafter. Looking ahead, The pressure gradient may tighten N of 05N and W of 110W by the end of the week increasing trades to moderate to locally fresh, with seas building locally to rough as a result. Northerly swell may build seas to rough just S of 30N by late Thu night into the weekend. $$ Lewitsky ########################### END OF MESSAGE SET ############################ --------------------------------------------------------------------------- Message File: T_AXPZ20KNHC310815_C_KWBC_20260331081532_49676782-225-TWDEP.txt ****0000004882**** AXPZ20 KNHC 310815 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1005 UTC Tue Mar 31 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 0700 UTC. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A surface trough extends from 07N78W to 04N106W. The ITCZ extends from 04N106W to 04N120W to 07N133W to beyond 04N140W. A second ITCZ extends from 03.4S89W to 03.4S96W to 02S104W to 03.4S111W. Scattered moderate isolated strong convection is noted from 02N to 08N between 130W and 139W. Similar convection is from 02S to 03.4S between 89W and 99W. Scattered moderate convection is noted from 03N to 06N between 86W and 93W, and from 06N to 09N between 95W and 104W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... A small plume of fresh to strong N gap winds are in the immediate Gulf of Tehuantepec due to a lingering locally tight pressure gradient and nocturnal drainage flow, along with 5-7 ft seas in the zone. Gentle to moderate winds dominate the remainder of the waters. Moderate seas dominate the offshore waters, with slight seas in the Gulf of California. For the forecast, fresh to locally strong winds in the Gulf of Tehuantepec will diminish through the morning. Moderate to fresh SW winds in the northern Gulf of California will increase to fresh to strong by this evening before diminishing by early Wed. Moderate to fresh winds will pulse near Cabo San Lucas and near Cabo Corrientes at times through mid-week. Moderate to fresh NW winds will dominate offshore Baja California by the end of the week as high pressure builds W of the peninsula. Moderate seas will dominate the offshore through the remainder of the week, except building locally to rough off Baja California Norte Fri through Sat night. Slight seas will prevail in the Gulf of California, except briefly to moderate in the northern Gulf with the fresh to strong winds. ....OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Fresh to locally strong NE-E winds prevail over the Papagayo region per recent ASCAT scatterometer data, with seas building to around 8 ft early this morning. Moderate to fresh N-NE winds prevail from the Gulf of Panama to near the Azuero Peninsula. Winds are mainly light to gentle elsewhere. Slight seas are offshore Colombia, with moderate seas elsewhere. For the forecast, fresh NE-E winds will pulse to strong across and downwind of the Papagayo region to near 90W through early Wed with locally rough seas, with winds becoming moderate to fresh thereafter. In the Gulf of Panama, moderate N-NE winds will continue to pulse to fresh early today and tonight. Slight to moderate seas will prevail through tonight. Large S-SW swell will spread into the waters from offshore Ecuador to the Galapagos Islands by Wed morning, and reach the remaining area waters and Central American coasts on Thu. This swell will build seas to rough from offshore Ecuador to the Galapagos Islands through Thu. ...REMAINDER OF THE AREA... The southern extent of a pair of fronts are over the NW waters. These fronts along with a trough 180-360 nm offshore Baja California have weakened high pressure with light to gentle winds dominating the waters N of 19N. Gentle to moderate winds prevail elsewhere over the open waters. N to NE swell generated by an ended gale-force gap wind event in the Gulf of Tehuantepec extending southwestward beyond the offshore waters are subsiding. Otherwise, moderate seas in mixed swell prevail across the remainder of the waters. For the forecast, gentle to moderate winds will dominate the open waters through mid-week as weak high pressure across much of the area slowly builds into the Baja California waters. A series of weak frontal boundaries will move into the NW waters and weaken W of 130W throughout the week. Moderate seas will continue otherwise through the early part of the week. Large southerly swell will move into the waters S of the Equator late tonight into Wed, and reach 10N on Thu, gradually subsiding thereafter. Looking ahead, The pressure gradient may tighten N of 05N and W of 110W by the end of the week increasing trades to moderate to locally fresh, with seas building locally to rough as a result. Northerly swell may build seas to rough just S of 30N by late Thu night into the weekend. $$ Lewitsky ########################### END OF MESSAGE SET ############################ --------------------------------------------------------------------------- Message File: T_AXPZ20KNHC311518_C_KWBC_20260331151859_9109880-282-TWDEP.txt ****0000004020**** AXPZ20 KNHC 311518 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1605 UTC Tue Mar 31 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 1200 UTC surface analysis and satellite imagery through 1500 UTC. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A surface trough extends from 07N78W to 04N102W. The ITCZ extends from 04N102W to 05N126W to beyond 04N140W. A second ITCZ extends from 03S87W to 03S100W to 03S111W. Scattered moderate isolated strong convection is noted from 02N to 08N between 130W and 139W and from 02S to 03.4S between 89W and 99W. Scattered moderate convection is noted from 03N to 06N between 86W and 93W and from 06N to 09N between 95W and 104W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Moderate to fresh gap winds are diminishing in the Gulf of Tehuantepec. Moderate S winds have developed in the northern-most Gulf of California, flowing toward low pressure over southern California. Elsewhere, mainly gentle winds dominate. Moderate seas prevail, except for slight seas in the Gulf of California. For the forecast, moderate to fresh SW winds in the northern Gulf of California will increase to fresh to strong by this evening before diminishing by early Wed. Moderate to fresh winds will pulse near Cabo San Lucas and near Cabo Corrientes at times through mid-week. Moderate to fresh NW winds will dominate offshore Baja California by the end of the week as high pressure builds W of the peninsula. Moderate seas will dominate the offshore through the remainder of the week, except building locally to rough off Baja California Norte Fri through Sat night. ....OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Fresh to locally strong NE-E winds prevail over the Papagayo region, with seas building to around 8 ft. Moderate N-NE winds prevail from the Gulf of Panama southward to around 04N. Winds are light to gentle elsewhere. Slight seas are offshore Colombia, with moderate seas elsewhere. For the forecast, fresh NE-E winds will pulse to strong across and downwind of the Papagayo region to near 92W through early Wed with locally rough seas, with winds becoming moderate to fresh thereafter. In the Gulf of Panama, moderate N-NE winds will continue to pulse to fresh into tonight. Large S-SW swell will spread into the waters from offshore Ecuador to the Galapagos Islands by Wed morning, and reach the remaining area waters and Central American coasts Thu. This swell will build seas to rough from offshore Ecuador to the Galapagos Islands through Thu. ...REMAINDER OF THE AREA... A stalling cold front is noted from 31N131W to 21N140W. This front has has disrupted the usual pressure gradient over the basin, and thus winds are mainly light to gentle across regional waters. Seas are generally moderate. For the forecast, gentle to moderate winds will dominate the open waters through Wed as weak high pressure across much of the area slowly builds into the Baja California waters. A series of weak frontal boundaries will move into the NW waters and weaken W of 130W throughout the week. Moderate seas will continue otherwise through mid-week. Large southerly swell will move into the waters S of the Equator into Wed, reach 10N Thu, then gradually subside. The pressure gradient may tighten N of 05N and W of 110W by the end of the week increasing trades to moderate to locally fresh, with seas building locally to rough as a result. Northerly swell may build seas to rough just S of 30N by late Thu night into the weekend. $$ Konarik ########################### END OF MESSAGE SET ############################ --------------------------------------------------------------------------- Message File: T_AXPZ20KNHC311958_C_KWBC_20260331195842_38666572-240-TWDEP.txt ****0000003825**** AXPZ20 KNHC 311958 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 2205 UTC Tue Mar 31 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 1800 UTC surface analysis and satellite imagery through 1930 UTC. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A surface trough extends from 07N78W to 05N97W. The ITCZ extends from 05N97W to 05N123W to beyond 05N140W. A second ITCZ extends from 03S88W to 03S102W to 03S120W. Scattered moderate isolated strong convection is noted from 02N to 08N between 130W and 139W. Scattered moderate convection is noted from 03N to 06N between 86W and 93W and from 06N to 09N between 95W and 104W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Fresh S winds are increasing in the northernmost Gulf of California, flowing into low pressure over southern California. Elsewhere, mainly gentle winds dominate, although some moderate NW winds are ongoing near Cabo Corrientes and Cabo San Lucas. Moderate seas prevail, except for slight seas in the Gulf of California. For the forecast, fresh S to SW winds in the northern Gulf of California will increase to fresh to strong this evening, then diminish by Wed morning. Moderate to fresh winds will continue pulsing near Cabo Corrientes and Cabo San Lucas into Wed night. Fresh NW winds will dominate offshore Baja California Thu and Fri as high pressure builds W of the peninsula. NW swell will bring locally rough seas off Baja California Norte Fri into Sat night. ....OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Fresh to locally strong NE-E winds prevail over the Papagayo region, with seas building to around 7 ft. Moderate N-NE winds prevail from the Gulf of Panama southward to around 06N. Winds are light to gentle elsewhere. Slight seas are offshore Colombia, with moderate seas elsewhere. For the forecast, fresh NE-E winds will pulse to strong across and downwind of the Papagayo region to near 90W tonight, with winds becoming moderate to fresh thereafter. Large S-SW swell will spread into the waters from offshore Ecuador to the Galapagos Islands by Wed morning, and reach the remaining area waters and Central American coasts Thu. This swell will build seas to rough from offshore Ecuador to the Galapagos Islands through Thu. ...REMAINDER OF THE AREA... A stationary front extends from 31N131W to 21N140W. Weak high pressure is centered just NW of the Revillagigedo Islands. An overall modest pressure gradient between these two features and the ITCZ to the south is leading to widespread light to gentle winds through the basin, with mainly moderate seas. For the forecast, gentle to moderate winds will dominate the open waters into Wed night as weak high pressure across much of the area slowly builds into the Baja California waters. A series of weak frontal boundaries will move into the NW waters and weaken W of 130W throughout the week. Moderate seas generally will continue into late week, large southerly swell will move into the waters S of the Equator into Wed, reach 10N Thu, then gradually subside. The pressure gradient may tighten N of 05N and W of 110W by the end of the week increasing trades to moderate to locally fresh, with seas building locally to rough as a result. Northerly swell may build seas to rough just S of 30N by late Thu night into the weekend. $$ Konarik ########################### END OF MESSAGE SET ############################