Tag Archives: Durango

Hurricane Roslyn Hits West Coast of Mexico

Hurricane Roslyn hit the west coast of Mexico on Sunday morning. At 8:00 a.m. EDT on Sunday the center of Hurricane Roslyn was located at latitude 22.1°N and longitude 105.5°W which put it about 55 miles (90 km) northwest of Tepic, Mexico. Roslyn was moving toward the north-northeast at 16 m.p.h. (26 km/h). The maximum sustained wind speed was 120 m.p.h. (195 km/h) and there were wind gusts to 150 m.p.h. (240 km/h). The minimum surface pressure was 960 mb.

A Hurricane Warning was in effect for Las Islas Marias. A Hurricane Warning was also in effect for the portion of the coast from Playa Perula to Escuinapa, Mexico. The Hurricane Warning included Puerto Vallarta. A Hurricane Watch was in effect for the portion of the coast from Escuinapa to Mazatlan, Mexico. Tropical Storm Warnings were in effect for the portions of the coast from Manzanillo to Playa Perula, Mexico and from Escuinapa to Mazatlan, Mexico.

The center of Hurricane Roslyn made landfall on the west coast of Mexico north of San Blas on Sunday morning. Roslyn was a major hurricane at the time of landfall. Winds to hurricane force extended out 25 miles (40 km) from the center of Roslyn’s circulation. Winds to tropical storm force extended out 80 miles (130 km) from the center of circulation. The Hurricane Intensity Index (HII) was 22.1. The Hurricane Size Index (HSI) was 8.5 and the Hurricane Wind Intensity Size Index (HWISI) was 30.6. Hurricane Roslyn was capable of causing localized major damage.

An upper level trough west of Baja California and a high pressure system over Mexico will steer Hurricane Roslyn quickly toward the northeast on Sunday. Roslyn will bring strong winds and drop locally heavy rain over Nayarit. Strong winds are likely to cause damage and electricity outages. Hurricane Roslyn will weaken steadily as it moves inland over western Mexico. Even though it will weaken, Roslyn could also drop locally heavy rain over southern Durango. Heavy rain could cause flash floods in some parts of Nayarit and southern Durango.

Hurricane Pamela Makes Landfall on West Coast of Mexico

Hurricane Pamela made landfall on the west coast of Mexico northwest of Mazatlan near La Cruz on Wednesday morning. At 8:00 a.m. EDT on Wednesday the center of Hurricane Pamela was located at latitude 23.7°N and longitude 106.8°W which put it about 40 miles (65 km) northwest of Mazatlan, Mexico. Pamela was moving toward the northeast at 14 m.p.h. (22 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 987 mb.

A Hurricane Warning was in effect for the portion of the coast from Bahia Tempehuaya to Escuinapa, Mexico. The Hurricane Warning included Mazatlan. Tropical Storm Warnings were in effect for the portions of the coast from Altata to Bahia Tempehuaya, Mexico and from Escuinapa to Cabo Corrientes, Mexico.

Hurricane Pamela was being affected by moderate vertical wind shear as it approached the west coast of Mexico. A large upper level trough over the western U.S. was producing southwesterly winds that were blowing toward the top of Pamela’s circulation. Northerly winds in the lower levels of the western side of Hurricane Pamela pulled drier air into its circulation. The combination of moderate vertical wind shear and drier air caused an asymmetrical distribution of thunderstorms. The strongest thunderstorms and the strongest winds were occurring in bands in the northeastern part of Hurricane Pamela. Bands in other parts of the circulation consisted primarily of showers and lower clouds. Winds to hurricane force extended out 30 miles (50 km) in the northeastern quadrant of Pamela’s circulation. Winds to tropical storm force extended out 130 miles (210 km) on the eastern side of the circulation. Winds to tropical storm force extended out 80 miles (130 km) from the center of circulation.

The upper level trough over the western U.S. will steer Hurricane Pamela quickly toward the northeast during the next 24 hours. The circulation in the lower levels of Pamela will weaken quickly when it moves over the mountains in western Mexico. Pamela will drop locally heavy rain over parts of Sinaloa and Durango. Flash floods could occur in some locations. The remnants of of the middle and upper parts Pamela’s circulation could contribute to rainfall over Texas on Thursday.

Pamela Strengthens to a Hurricane Southwest of Mazatlan

Former Tropical Storm Pamela strengthened to a hurricane southwest of Mazatlan, Mexico on Tuesday morning. At 8:00 a.m. EDT on Tuesday the center of Hurricane Pamela was located at latitude 19.9°N and longitude 109.0°W which put it about 280 miles (455 km) southwest of Mazatlan, Mexico. Pamela was moving toward the north at 13 m.p.h. (20 km/h). The maximum sustained wind speed was 80 m.p.h. (130 km/h) and there were wind gusts to 95 m.p.h. (150 km/h). The minimum surface pressure was 985 mb.

A Hurricane Warning was in effect for the portion of the coast from Bahia Tempehuaya to Escuinapa, Mexico. The Hurricane Warning included Mazatlan. Tropical Storm Warnings were in effect for the portions of the coast from Altata to Bahia Tempehuaya, Mexico and from Escuinapa to Cabo Corrientes, Mexico. A Tropical Storm Watch was in effect for the portion of the coast of Baja California from Cabo San Lucas to Los Barilles.

Former Tropical Storm Pamela strengthened to a hurricane over the Eastern North Pacific Ocean southwest of Mazatlan on Tuesday morning. More thunderstorms developed near the center of Hurricane Pamela. Those thunderstorms generated more upper level divergence that pumped mass away from the hurricane. The removal of mass caused the surface pressure to decrease. Bands of showers and thunderstorms were revolving around the core of Hurricane Pamela. Winds to hurricane force extended out 25 miles (40 km) on the east side of Pamela. Winds to tropical storm force extended out 90 miles (145 km) from the center of circulation.

Hurricane Pamela will move through a region where the environment is somewhat favorable for intensification during the next 18 hours. Pamela will move over water where the Sea Surface Temperatures are near 30˚C. It will move under the the southern part of an upper level trough over the western U.S. The trough will produce southwesterly winds that will blow toward the top of Hurricane Pamela’s circulation. Those winds will cause some vertical wind shear. The wind shear will inhibit intensification, but the shear will not be strong enough to prevent Pamela from getting stronger.

Hurricane Pamela will move around the western part of a high pressure system over Mexico during the next few hours. The high pressure system will steer Pamela toward the north during that time period. The upper level trough over the western U.S. will turn Pamela toward the northeast in a few hours. On its anticipated track Hurricane Pamela will approach the west coast of Mexico early on Wednesday morning. Pamela will bring strong winds and locally heavy rain to the section of the coast near Mazatlan. Heavy rain could cause flash floods in parts of Sinaloa and Durango. The remnants of Pamela’s circulation could contribute to rainfall over Texas later this week,

Tropical Storm Nora Brings Rain to West Coast of Mexico

Tropical Storm Nora brought rain to the west coast of Mexico on Sunday. At 8:00 p.m. EDT on Sunday the center of Tropical Storm Nora was located at latitude 24.5°N and longitude 107.7°W which put it about 85 miles (135 km) east-southeast of Los Mochis, Mexico. Nora was moving toward the north-northwest at 12 m.p.h. (19 km/h). The maximum sustained wind speed was 60 m.p.h. (95 km/h) and there were wind gusts to 75 m.p.h. (120 km/h). The minimum surface pressure was 992 mb.

A Tropical Storm Warning was in effect for the portion of the coast from Mazatlan to Topolobampo, Mexico. A Tropical Storm Watch was in effect for the portion of the coast from Topolobampo to Huatabampito, Mexico.

Tropical Storm Nora moved northward along the west coast of Mexico on Sunday. The center passed near Mazatlan and Culiacan. The center remained over land during its northward track and former Hurricane Nora weakened to a tropical storm. Tropical Storm Nora dropped heavy rain over parts of Nayarit, Sinaloa and Durango. The heavy rain may have caused flash floods in some location.

Tropical Storm Nora will continue to move toward the north-northwest near the west coast of Mexico during the next 48 hours. On its anticipated track the center of Nora will remain over land. So, Tropical Storm Nora will continue to weaken. Nora could bring locally heavy rain to Sinaloa, Sonora and Chihuahua as the tropical storm weakens over northwestern Mexico. The risk of flash floods will be high in those location.s

Major Hurricane Willa Makes Landfall in Mexico

Major Hurricane Willa made landfall on the coast of Mexico between Teacapan and Mazatlan on Tuesday evening.  At 8:00 p.m. EDT on Tuesday the center of Hurricane Willa was located at latitude 22.6°N and longitude 106.0°W which put it about 50 miles (80 km) south-southeast of Mazatlan, Mexico.  Willa was moving toward the north-northeast at 10 m.p.h. (16 km/h).  The maximum sustained wind speed was 120 m.p.h. (195 km/h) and there were wind gusts to 140 m.p.h. (220 km/h).  The minimum surface pressure was 965 mb.

A Hurricane Warning is in effect for the portion of the coast from San Blas to Mazatlan, Mexico.  Tropical Storm Warnings were in effect for the portions of the coast from Playa Perula to San Blas and from Mazatlan to Bahia Tempehuaya, Mexico.

An eyewall replacement cycle occurred in the core of Hurricane Willa on Tuesday.  When the original inner eyewall dissipated, the core of Willa was larger even though the maximum sustained wind speed was slower.  Winds to hurricane force extend out about 35 miles from the the center of Hurricane Willa.  Winds to tropical storm force extend out about 100 miles from the center of circulation.  The Hurricane Intensity Index (HII) for Hurricane Willa is 22.1.  The Hurricane Size Index (HSI) is 12.7 and the Hurricane Wind Intensity Size Index (HWISI) s 34.8.  Hurricane Willa is capable of causing regional major damage.

Hurricane Willa will produce hurricane force winds along the coast between Tecuala and Mazatlan.  Those winds will be capable of causing major damage.  The winds will also push water toward the coast and a storm surge of 10 to 12 feet (3 to 4 meters) is possible.  Hurricane Willa will dissipate fairly quickly when it moves over the Sierra Madre Occidental Mountains.  However, Willa will drop locally heavy rain over the southern part of Sinaloa and over Durango.  The locally heavy rain is likely to cause flash floods in some locations.