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Rain, Thunderstorms Drench Southwestern U.S.
October 11, 2025 at 08:59 PM EDT
Updated By WeatherBug Meteorologist, Rob Miller
Abundant tropical moisture from former systems Priscilla and Raymond will surge into the Southwest U.S. this weekend through early next week. This will lead to rounds of moderate to heavy rainfall and the potential for flooding.
Priscilla developed on October 4th and quickly developed into a Category 1 hurricane the next day. Further strengthening occurred, with Priscilla becoming a Category 2 hurricane by October 7th. However, it quickly weakened as it encountered strong wind shear throughout the atmosphere and cooler waters. Moisture from what was once Priscilla has moved over the Southwest U.S. where bands of moderate to locally heavy rainfall fell at the end of the week into the weekend.
Following behind Priscilla is Tropical Depression Raymond, which is forecast to weaken into a remnant low tonight and dissipate on Sunday. Its remnant moisture will also stream northward across northern Mexico and into the Southwest later Sunday and Monday.
Multiple rounds of moderate to heavy rain and thunderstorms are expected across the Southwest today through Tuesday. The heaviest rain will be found southern Nevada, northern and eastern Arizona, most of Utah, western New Mexico and western Colorado. Here, rainfall amounts of 2 to 4 inches can be expected when all is said and done. Though, locally heavier amounts are possible. The rest of the Southwest will see anywhere from one-half inch up to 2 inches of rain.
Storms are expected to be efficient rainfall producers, with rainfall rates in excess of 1 inch per hour. Excessive rainfall may result in flooding of rivers, creeks, stream, burn scar areas, urban, low-lying and other more flood prone areas. Those living in areas prone to flooding should be prepared to take action should flooding develop.
Flood Watches are in effect for portions of southern Nevada, most of Arizona, southern Utah, western Colorado, and western New Mexico.
Flooding is a leading cause of weather-related fatalities with more than half of flood-related casualties occurring in automobiles when attempting to cross high water. Just six inches of fast-flowing water can sweep a grown adult away while twelve inches can overtake small cars. It is never safe to drive or walk through floodwaters, always remember to turn around don't drown.
Exercise caution when going out on the roads during or after a downpour. If you encounter a water-covered roadway, be sure to “Turn Around, Don’t Drown” because the water could be much deeper than it appears.
Priscilla developed on October 4th and quickly developed into a Category 1 hurricane the next day. Further strengthening occurred, with Priscilla becoming a Category 2 hurricane by October 7th. However, it quickly weakened as it encountered strong wind shear throughout the atmosphere and cooler waters. Moisture from what was once Priscilla has moved over the Southwest U.S. where bands of moderate to locally heavy rainfall fell at the end of the week into the weekend.
Following behind Priscilla is Tropical Depression Raymond, which is forecast to weaken into a remnant low tonight and dissipate on Sunday. Its remnant moisture will also stream northward across northern Mexico and into the Southwest later Sunday and Monday.
Multiple rounds of moderate to heavy rain and thunderstorms are expected across the Southwest today through Tuesday. The heaviest rain will be found southern Nevada, northern and eastern Arizona, most of Utah, western New Mexico and western Colorado. Here, rainfall amounts of 2 to 4 inches can be expected when all is said and done. Though, locally heavier amounts are possible. The rest of the Southwest will see anywhere from one-half inch up to 2 inches of rain.
Storms are expected to be efficient rainfall producers, with rainfall rates in excess of 1 inch per hour. Excessive rainfall may result in flooding of rivers, creeks, stream, burn scar areas, urban, low-lying and other more flood prone areas. Those living in areas prone to flooding should be prepared to take action should flooding develop.
Flood Watches are in effect for portions of southern Nevada, most of Arizona, southern Utah, western Colorado, and western New Mexico.
Flooding is a leading cause of weather-related fatalities with more than half of flood-related casualties occurring in automobiles when attempting to cross high water. Just six inches of fast-flowing water can sweep a grown adult away while twelve inches can overtake small cars. It is never safe to drive or walk through floodwaters, always remember to turn around don't drown.
Exercise caution when going out on the roads during or after a downpour. If you encounter a water-covered roadway, be sure to “Turn Around, Don’t Drown” because the water could be much deeper than it appears.