Tag Archives: Cabo San Lazaro

Olaf Weakens to Tropical Storm over Southern Baja California

Former Hurricane Olaf weakened to a tropical storm when it passed over southern Baja California on Friday. At 2:00 p.m. EDT on Friday the center of Tropical Storm Olaf was located at latitude 24.5°N and longitude 112.2°W which put it about 20 miles (30 km) south-southeast of Cabo San Lazaro, Mexico. Olaf was moving toward the northwest at 12 m.p.h. (19 km/h). The maximum sustained wind speed was 50 m.p.h. (80 km/h) and there were wind gusts to 80 m.p.h. (130 km/h). The minimum surface pressure was 997 mb.

A Tropical Storm Warning was in effect for the portion of the coast from Puerto San Andresito to Loreto. The Tropical Storm Warning included Cabo San Lucas and La Paz.

Former Hurricane Olaf weakened on Friday when the circulation passed over mountains in the southern part of Baja California. The low level center of circulation of Tropical Storm Olaf was visible on satellite images. The low level center was back over the Eastern North Pacific Ocean near Cabo San Lazaro. There were mainly showers and lower clouds near the low level center. Most of the thunderstorms were occurring in bands on the eastern side of Olaf that were over Baja California and the Gulf of California. Winds to tropical storm force extended out 70 miles (110 km) from the center of circulation. A weather station in Puerto Cortes, Mexico recently reported a sustained wind speed of 44 m.p.h. (70 km/h) and a wind gust of 53 m.p.h. (85 km/h).

Tropical Storm Olaf will move through an environment unfavorable for intensification during the next several days. Olaf will move over water where the Sea Surface Temperature is near 25˚C. The air over the cooler water is drier and more stable. Drier, more stable air will inhibit the develop of thunderstorms. If new thunderstorms do not form near the center of Tropical Storm Olaf during the next 12 hours, it will gradually weaken. Olaf is forecast to weaken to a tropical depression on Saturday.

The future track of Tropical Storm Olaf will depend on how fast Olaf weakens. If no new thunderstorms develop near the center of Olaf, then the tropical storm will be steered by the winds in the lower levels of the atmosphere. A surface high pressure system over the Eastern North Pacific Ocean is forecast to steer Tropical Storm Olaf toward the west-southwest during the weekend. On its anticipated track Tropical Storm Olaf will gradually move away from Baja California.

Hurricane Genevieve Brings Wind and Rain to Baja California

Hurricane Genevieve brought wind and rain to southern Baja California on Thursday morning.  At 11:00 a.m. EDT on Thursday the center of Hurricane Genevieve was located at latitude 23.3°N and longitude 111.4°W which put it about 120 miles (195 km) south-southeast of Cabo San Lazaro, Mexico.  Genevieve was moving toward the northwest at 12 m.p.h. (19 km/h).  The maximum sustained wind speed was 75 m.p.h. (120 km/h) and there were wind gusts to 90 m.p.h. (145 km/h).  The minimum surface pressure was 984 mb.

A Tropical Storm Warning was in effect for the portion of the coast from Los Barriles to Cabo San Lazaro, Mexico.  A Tropical Storm Watch was in effect for the portion of the coast from Los Barriles to La Paz, Mexico.

The center of Hurricane Genevieve passed just southwest of the southern tip of Baja California on Thursday morning.  A weather station at the Cabo San Lucas Marina reported a wind gust of 90 m.p.h. (145 km/h).  Bands of thunderstorms were dropping heavy rain on parts of southern Baja California.  There were reports of flash floods in some locations.

Hurricane Genevieve will weaken during the next several days as it moves over cooler water.  Genevieve will move over water where the Sea Surface Temperatures are cooler than 26°C.  It will move through a region where the upper level winds are weak and there will be little vertical wind shear.  Hurricane Genevieve will weaken gradually as it moves over cooler water.

Hurricane Genevieve will move around the southwestern part of a ridge of high pressure over the southwestern U.S. and northern Mexico.  The ridge will steer Genevieve toward the northwest.  On its anticipated track Hurricane Genevieve will move parallel to the west coast of Baja California.  Genevieve will continue to bring gusty winds to the southern part of Baja California.  It will also drop move heavy rain and additional flash floods are likely.

Genevieve Prompts Hurricane Warning for Baja California

A potential close approach of Hurricane Genevieve prompted the issuance of a Hurricane Warning for the southern tip of Baja California.  At 11:00 p.m. EDT on Wednesday the center of Hurricane Genevieve was located at latitude 20.9°N and longitude 109.7°W which put it about 140 miles (225 km) south of the southern tip of Baja California.  Genevieve was moving toward the north-northwest at 9 m.p.h. (15 km/h).  The maximum sustained wind speed was 115 m.p.h. (185 km/h) and there were wind gusts to 135 m.p.h. (220 km/h).  The minimum surface pressure was 959 mb.

A Hurricane Warning was in effect for the portion of the coast from Los Barriles to Todos Santos, Mexico.  A Tropical Storm Warning was in effect for the portion of the coast from Todos Santos to Cabo San Lazaro, Mexico.  A Tropical Storm Watch was in effect for the portion of the coast from Los Barriles to La Paz, Mexico.

Hurricane Genevieve continued to exhibit a well organized circulation.  A circular eye was present at the center of circulation.  The eye was surrounded by a ring of strong thunderstorms and the strongest winds were occurring in that ring of storms.  Bands of showers and thunderstorms were revolving around the core of Genevieve.  Storms near the core of the circulation were generating strong upper level divergence was pumping mass away from the hurricane.

Hurricane force winds extended out 35 miles (55 km) from the center of Genevieve.  Tropical Storm force winds extended out 140 miles (225 km) from the center of circulation.  The Hurricane Intensity Index (HII) for Hurricane Genevieve was 20.6.  The Hurricane Size Index (HSI) was 13.4 and the Hurricane Wind Intensity Size Index (HWISI) was 34.0.

Hurricane Genevieve will move through an environment less favorable for a major hurricane during the next few days.  Genevieve will move over water where the Sea Surface Temperatures are cooler than 27°C.  It will move through a region where the upper level winds are weak and there will be little vertical wind shear.  Hurricane Genevieve is likely to weaken when the core starts to move over cooler water.

Hurricane Genevieve will move around the southwestern part of an ridge of high pressure over the southwestern U.S. and northern Mexico.  The ridge will Genevieve toward the north-northwest during the next 24 hours.  On its anticipated track the core of Hurricane Genevieve could be near the southern tip of Baja California in about 18 hours.  Genevieve will cause gusty winds over the southern part of Baja California.  It will also drop locally heavy rain which could cause flash floods.