Category 1 Pacific hurricane in 2022
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Hurricane Blas was a Category 1 hurricane that brought winds and flooding to several Mexican states in June 2022. The second named storm and second hurricane of the 2022 Pacific hurricane season, Blas developed from a low-pressure area off the coast of southwestern Mexico. It became a tropical depression on June 14. and strengthened into a tropical storm later that same day. Blas became a hurricane the next day, while paralleling the coast. The system reached its peak intensity on June 17, at 15:00 UTC, with maximum sustained winds of and a central pressure of . Later, Blas turned to the west and weakened, becoming a tropical depression on June 20, before transitioning into a post-tropical cyclone on that same day.
Damage from the hurricane was minor as it remained offshore. All totaled, Blas was responsible for the deaths of four people in Mexico.
Meteorological history.
On June 7, the National Hurricane Center (NHC) began tracking a disturbance with potential for potential tropical development south of the Gulf of Tehuantepec. Late on June 10, a broad low-pressure area formed off the coast of southwestern Mexico, producing disorganized showers and thunderstorms in an environment conducive for gradual development. By 09:00 UTC on June 14, the low had become a tropical depression while it was situated about south-southeast of Manzanillo, Colima. Six hours later, the depression strengthened into a tropical storm, and was assigned the name "Blas". The storm's convective organization continued to improve through the day according to satellite imagery, maintaining a well-defined structure and developing prominent convective banding features, as a circular central dense overcast overcast became embedded on the system. On June 15, Blas began to rapidly intensify as it developed an inner core, and at 15:00 UTC that day, it became a Category 1 hurricane on the Saffir–Simpson scale. Blas then developed a mid-level eye on the western portions of the cyclone, then maintained its intensity due to very cold cloud tops near the center and a strong upper-level outflow in three of the storm's quadrants.
Blas strengthened slightly on June 17, with its maximum sustained winds increasing to near and a minimum central barometric pressure of 976 mbar (28.82 inHg). Soon after, the cyclone began to weaken as it moved westward. At 03:00 UTC on June 18, Blas weakened to a tropical storm due to the mid-level center being sheared off to the southwestern side of the storm combined with colder sea surface temperatures as it moved north-west, with no deep convection near the surface center. The storm continued to weaken that day, with satellite images showing a partially exposed low-level center with convection confined to the southeastern quadrant of its circulation.
Despite persistent wind-shear and transiting over cool waters with temperatures below , Blas maintained limited convection on the eastern half into June 19. By 21:00 UTC that day, only a few broken convective bands remain to the north and northeast of the storm's center, and by 03:00 UTC on June 20, satellite imagery indicated that it had lost almost all of its organized deep convection. With little or no convection remaining in association with Blas, along with their being no longer tropical-storm force winds in the circulation, the NHC downgraded the storm to a tropical depression six hours later. By 15:00 UTC that same day, Blas transitioned to a post-tropical cyclone about southwest of the southern tip of the Baja California peninsula. The remnant low later dissipated over the northern Pacific on June 24.
Preparations and impact.
On June 16, state authorities in Oaxaca placed 60 municipalities, all still recovering from the impacts of Hurricane Agatha, on alert as Blas neared. Ports were also closed. In the state of Guerrero, schools were closed across 21 municipalities, including: Costa Chica, Costa Grande, and Acapulco; classes were also suspended in Michoacán. Blas was responsible for four deaths. Two bodies were found at a beach in Acapulco with the cause of death unknown, but presumed to be storm-related. One Acapulco resident sustained injuries after a wall collapsed in her home. In the state of Puebla, two people were killed by a landslide in Eloxochitlán.
Blas caused only minor damage in Guerrero according to local authorities. At Acapulco, winds and rains from Blas caused beach erosion of over in length from El Morro beach. In Tecpán de Galeana, several acres (hectares) of banana crops were destroyed by strong winds. Two streams overflowed in Acapulco, flooding eight neighborhoods. Flooding was also reported in Manzanillo and Villa de Álvarez in Colima. Power outages were reported in Zihuatanejo and in Atoyac.
Authorities in Nayarit said that at least 100 people had been displaced by flooding in that state in the aftermath of the hurricane. Governor Miguel Ángel Navarro Quintero pledged that actions would be taken to rebuild the houses destroyed by the storm. Soon after Blas passed, the National Guard was activated to help in the cleanup and removal of debris in Michoacán and Guerrero.
References.
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