Heads up: the National Weather Service’s Weather Prediction Center is showing that up to 50 million people could reportedly be affected by back-to-back bomb cyclones across the U.S. from California to New York.
According to the National Ocean Service, a bombogenesis occurs a midlatitude cyclone rapidly intensifies and drops at least 24 millibars over the course of a 24-hour period. The minibar measures atmospheric pressure. This effect can happen when a cold air mass collides with a warm air mass. One example would be air over warm ocean waters. Bombogenesis creates a bomb cyclone.
The National Weather Service’s Weather Prediction Center also shares that since this system involving bomb cyclones is not tropical, its wind field is broader and less intense than a hurricane with this central pressure. But hurricane-force winds will exist in its immediate vicinity offshore.
“For this portion of the globe (30N-50N latitude and 120W to 140W longitude), that would indicate the possibility of this being the strongest system for the area. The current strongest three known storms for that area were in October 1977 (Post-Tropical Cyclone Harriet); a mid-November 1981 storm; and the strong cyclone from 2-3 days ago.”
But, the Center also stated that, while things are very active in the West due to the bomb cyclones, there is also the potential for flooding in the Midwest. “Periods of moderate to heavy rain will track across northern IL, IN, and toward OH through tonight. [The prediction] is 2-5+ inches of rain. Flash flooding could become widespread.”
Along With Bomb Cyclones, California Issues New Evacuation Orders to Vulnerable Locations Near Recent ‘Burn Scars’
CNN also reports that along with the recent bomb cyclone activities, the state of California is now issuing new evacuation orders to the vulnerable locations that are near recent “burn scars.”
But Santa Barbara County officials upgraded recent evaluations warnings to evacuation orders for parts of the Alisal Fire Burn area. The orders reportedly mean that it is unlawful to remain in place. However, the order is effective Sunday, October 24 at 12:00 PM (noon). It also applies to the west of Las Flores Canyon; east of Mariposa Reina; south of West Camino Cielo; and down to the ocean. An Evacuation Center is now open at the SBCC Wake Center located at 300 N. Turnpike Road, Santa Barbara 93111.
Meanwhile, the Alisal Fire Bure Area has been issued with a flash flood watch effective on Monday from 6 a.m. to 12 p.m. “Moderate to heavy rain is expected in and around the Alisal burn area. With peak rainfall rates of 0.30 to 0.60 inch per hour. There is the potential for rainfall rates of up to 1 inch per hour.”
The County then adds that significant mud and debris flows will be possible in and around the Alisal burn area. This could affect roads and structures in the affected area, including Refugio Road and Highway 101.