Tropical Storm Amanda continued to spin over the Eastern North Pacific Ocean far to the southwest of Baja California on Friday.  At 5:00 p.m. EDT on Friday the center of Tropical Storm Amanda was located at latitude 13.1°N and longitude 134.1°W which put the center about 1725 miles (2775 km) west-southwest of the southern tip of Baja California.  Amanda was moving toward the west at 5 m.p.h. (8 km/h).  The maximum sustained wind speed was 40 m.p.h. (65 km/h) and there were wind gusts to 50 m.p.h. (80 km/h).  The minimum surface pressure was 1006 mb.

Tropical Storm Amanda started to weaken on Friday as it spun far to the southwest of Baja California.  Amanda moved into a region with drier, more stable air.  The drier air and more vertical wind shear caused some of the thunderstorms in Tropical Storm Amanda to dissipate.  Thunderstorms were still occurring in bands west of the center of Amanda’s circulation.  Bands in the other parts of Tropical Storm Amanda consisted primarily of showers and lower clouds.

Thunderstorms west of the center of Tropical Storm Amanda generated less upper level divergence.  The removal of mass in the upper levels of the atmosphere was less than the convergence of mass in the lower levels.  So, the net inflow of mass caused the surface pressure to increase slowly.

The circulation around Tropical Storm Amanda was very small.  Winds to tropical storm force extended out 35 miles (55 km) from the center of Amanda’s circulation.

Tropical Storm Amanda will move through an environment unfavorable for intensification during the next 24 hours.  Amanda will move over water where the Sea Surface Temperatures are near 27°C.  It will move under the western part of an upper level ridge that is west of Mexico.  The upper level ridge will produce southeasterly winds that will blow toward the top of Amanda’s circulation.  Those winds will cause moderate vertical wind shear. In addition, Tropical Storm Amanda will continue to move through a region of drier air.  The vertical wind shear and the drier air will cause Tropical Storm Amanda to continue to weaken during the next 24 hours.

Tropical Storm Amanda will move around the southern part of a high pressure system that is over the Eastern North Pacific Ocean.  The high pressure system will steer Amanda slowly toward the west-southwest during the next 24 hours.  On its anticipated track, Tropical Storm Amanda will remain far to the southwest of Baja California.

Tropical Storm Amanda strengthened a little on Thursday as it continued to spin over the Eastern North Pacific Ocean far to the southwest of Baja California.  At 5:00 p.m. EDT on Thursday the center of Tropical Storm Amanda was located at latitude 12.7°N and longitude 131.1°W which put the center about 1560 miles (2510 km) west-southwest of the southern tip of Baja California.  Amanda was moving toward the west-northwest at 9 m.p.h. (15 km/h).  The maximum sustained wind speed was 45 m.p.h. (75 km/h) and there were wind gusts to 60 m.p.h. (95 km/h).  The minimum surface pressure was 1004 mb.

Even though Tropical Storm Amanda strengthened a little on Thursday, the distribution of thunderstorms in Amanda continued to be asymmetrical.  Thunderstorms were occurring mainly in bands in the western half of Amanda’s circulation.  Bands in the eastern half of Tropical Storm Amanda consisted primarily of showers and lower clouds.  Storms near the center of Amanda generated upper level divergence that pumped mass away to the north of the tropical storm.  The removal of mass caused the surface pressure to decrease slowly.

The circulation around Tropical Storm Amanda was small.  Winds to tropical storm force extended out 45 miles (75 km) from the center of Amanda’s circulation.

Tropical Storm Amanda will move through an environment marginally favorable for intensification during the next 24 hours.  Amanda will move over water where the Sea Surface Temperatures are near 28°C.  It will move under the western part of an upper level ridge that is west of Mexico.  The upper level ridge will produce southeasterly winds that will blow toward the top of Amanda’s circulation.  Those winds will cause moderate vertical wind shear. The vertical wind shear will inhibit intensification, but the wind shear may not be enough to prevent intensification.  Tropical Storm Amanda could intensify a little more during the next 24 hours.  Amanda will move into a region where the upper level winds are stronger and where there will be more vertical wind shear during the weekend.  Tropical Storm Amanda will start to weaken when the vertical wind shear in creases.

Tropical Storm Amanda will move around the southwestern part of a high pressure system that is over the Eastern North Pacific Ocean.  The high pressure system will steer Amanda slowly toward the west-northwest during the next 24 hours.  On its anticipated track, Tropical Storm Amanda will remain far to the southwest of Baja California.

Former Tropical Depression One-E strengthened to Tropical Storm Amanda far to the southwest of Baja California on Wednesday morning.  At 11:00 a.m. EDT on Wednesday the center of Tropical Storm Amanda was located at latitude 10.6°N and longitude 128.2°W which put the center about 1475 miles (2375 km) west-southwest of the southern tip of Baja California.  Amanda was moving toward the northwest at 8 m.p.h. (13 km/h).  The maximum sustained wind speed was 40 m.p.h. (65 km/h) and there were wind gusts to 50 m.p.h. (80 km/h).  The minimum surface pressure was 1006 mb.

Former Tropical Depression One-E strengthened far to the southwest of Baja California on Wednesday morning and the U.S. National Hurricane Center designated the system as Tropical Storm Amanda.

More thunderstorms formed just to the west of the center of Tropical Storm Amanda on Wednesday morning.  Other thunderstorms were occurring in bands in the northern and western parts of Amanda’s circulation.  Bands in the southern and eastern parts of Tropical Storm Amanda still consisted primarily of showers and lower clouds.  Storms near the center of Tropical Storm Amanda generated upper level divergence that pumped mass away to the north of the tropical storm.  The removal of mass caused the surface pressure to decrease slowly.

The circulation around Tropical Storm Amanda was small.  Winds to tropical storm force extended out 60 miles (95 km) in the northern half of Amanda’s circulation.  The winds in the southern half of Tropical Storm Amanda were blowing at less than tropical storm force.

Tropical Storm Amanda will move through an environment favorable for intensification during the next 24 hours.  Amanda will move over water where the Sea Surface Temperatures are near 28°C.  It will move under the western part of an upper level ridge that is west of Mexico. The upper level ridge will produce southerly winds that will blow toward the top of Amanda’s circulation.  Those winds will cause moderate vertical wind shear.  The vertical wind shear will inhibit intensification, but the wind shear will not be enough to prevent intensification.  Tropical Storm Amanda will intensify during the next 24 hours.

Tropical Storm Amanda will move around the southwestern part of a high pressure system that is over the Eastern North Pacific Ocean.  The high pressure system will steer Amanda slowly toward the northwest during the next 24 hours.  On its anticipated track, Tropical Storm Amanda will remain far to the southwest of Baja California during the next few days.