Rosa to slam northern Baja California, Mexico into Monday night

By Faith Eherts, AccuWeather meteorologist
By Robert Richards, AccuWeather meteorologist
October 01, 2018, 8:18:11 PM EDT

Rosa will continue to batter far northwestern Mexico with gusty winds and flooding rainfall into Monday night.

Among the communities in the path of Rosa is Mexicali, the region's capital, which normally receives about 7 mm (0.3 of an inch) of rainfall during the entire month of October. The city could be inundated with as much as three times this amount in just one day as Rosa impacts the area early this week.

Blowing dust preceded the arrival of Rosa in Mexicali on Sunday afternoon before rain fell overnight into Monday

Rosa will turn northeastward and make landfall along Baja California's Pacific Coast on Monday evening. Rosa is anticipated to hold its strength and remain a tropical storm when it moves onshore before quickly weakening.


Coastal conditions will remain hazardous for small craft and swimmers. Anyone vacationing in a coastal community along the northern Baja California coastline should pay attention to local officials and avoid going in the water.

Rosa will further lose wind intensity as it moves inland and interacts with the region's steep terrain; however, dangerous impacts will continue.

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Flooding rainfall will remain a threat as the system moves through northern Baja California, northwestern Sonora and into the American Southwest.

Mountainous areas will be subject to flash flooding and mudslides, where over 100 mm (4 inches) of rainfall could fall Monday and Monday night.


More significant travel disruptions can occur south of Ensenada to Rosarito. Poor visibility, standing water and washed-out roads could pose a threat to any motorists.

Combined with gusty winds, this weather could lead to downed trees and power lines, power outages and damage to poorly constructed buildings.

Just south of San Diego, the cities of Tijuana and Ensenada are expected to escape with little or no impacts from Rosa.

Northwestern Mexico will turn drier on Tuesday as Rosa continues to unload heavy rain on the Southwest states of the U.S.

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