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https://www.accuweather.com/en/weat...flooding-tropical-rainfall-next-week/70006187
Desert Southwest to face flooding tropical rainfall next week
By Faith Eherts, AccuWeather meteorologist
September 28, 2018, 1:05:56 AM EDT
The eastern Pacific's newest tropical system is currently churning out at sea, but Rosa is on track to later cause flooding across the American Southwest.
Rosa developed into a hurricane on Wednesday, and strengthened into a major hurricane by Thursday afternoon.
"The track of Rosa will keep it well west of Mexico through the weekend, meaning the primary impact to land through the weekend will be limited to rough surf and rip currents along the western coast of Mexico," said AccuWeather Senior Meteorologist Dan Pydynowski.
The system is forecast to be a tropical storm by the time it finally reaches the coast of Baja California, Mexico, early next week.
A tropical storm is a system with sustained wind speeds of up to 72 mph (117 km/h), which are capable of downing trees and power lines, resulting in property damage, power outages and travel disruptions. Communities in central and northern Baja California should begin to prepare for this potentially disruptive weather.
Additionally, Rosa is expected to produce potentially dangerous amounts of rainfall that will spread over areas far beyond the shores of Mexico.
"Regardless of its exact intensity as it approaches the Baja, moisture from Rosa will be pulled northward and northeastward across northern Mexico and into the southwestern United States," Pydynowski warned. "This could lead to locally heavy rainfall and flash flooding early next week across parts of the Southwest."
"Interaction with a non-tropical weather feature, a southward dip in the jet stream, may allow rain to become widespread and temperatures to plunge over the western U.S., including much of California," according to AccuWeather Senior Meteorologist Alex Sosnowski.
"Even if the two features remain relatively separate, the weather over much of the West next week is likely to be much different when compared to recent weeks and months," Sosnowski said.
Many places across the Desert Southwest typically receive about 0.5 of an inch of rain or less during the whole month of October. Rosa's influence could mean some places end up with four times as much over the span of just a few days.
Arroyos, low-lying roads and narrow canyons can flood quickly in periods of heavy rain. Anyone planning to travel or hike through these areas early next week should remain vigilant of the flood risk and plan accordingly.
Download the free AccuWeather app for the latest forecast and local watches and warnings.
Desert Southwest to face flooding tropical rainfall next week
By Faith Eherts, AccuWeather meteorologist
September 28, 2018, 1:05:56 AM EDT
The eastern Pacific's newest tropical system is currently churning out at sea, but Rosa is on track to later cause flooding across the American Southwest.
Rosa developed into a hurricane on Wednesday, and strengthened into a major hurricane by Thursday afternoon.
"The track of Rosa will keep it well west of Mexico through the weekend, meaning the primary impact to land through the weekend will be limited to rough surf and rip currents along the western coast of Mexico," said AccuWeather Senior Meteorologist Dan Pydynowski.
The system is forecast to be a tropical storm by the time it finally reaches the coast of Baja California, Mexico, early next week.
A tropical storm is a system with sustained wind speeds of up to 72 mph (117 km/h), which are capable of downing trees and power lines, resulting in property damage, power outages and travel disruptions. Communities in central and northern Baja California should begin to prepare for this potentially disruptive weather.
Additionally, Rosa is expected to produce potentially dangerous amounts of rainfall that will spread over areas far beyond the shores of Mexico.
"Regardless of its exact intensity as it approaches the Baja, moisture from Rosa will be pulled northward and northeastward across northern Mexico and into the southwestern United States," Pydynowski warned. "This could lead to locally heavy rainfall and flash flooding early next week across parts of the Southwest."
"Interaction with a non-tropical weather feature, a southward dip in the jet stream, may allow rain to become widespread and temperatures to plunge over the western U.S., including much of California," according to AccuWeather Senior Meteorologist Alex Sosnowski.
"Even if the two features remain relatively separate, the weather over much of the West next week is likely to be much different when compared to recent weeks and months," Sosnowski said.
Many places across the Desert Southwest typically receive about 0.5 of an inch of rain or less during the whole month of October. Rosa's influence could mean some places end up with four times as much over the span of just a few days.
Arroyos, low-lying roads and narrow canyons can flood quickly in periods of heavy rain. Anyone planning to travel or hike through these areas early next week should remain vigilant of the flood risk and plan accordingly.
Download the free AccuWeather app for the latest forecast and local watches and warnings.
and low temps plus the crapy fishing that typically follows a big storm like this.
