Flooding Risks from Tropical Moisture Across the Southeast and Southwest

Tropical moisture from Isaias and Rachel will impact portions of the Southeast and Southwest this weekend. Flash flooding, strong winds and even a threat for severe thunderstorms and tornadoes are possible. Meanwhile, strong winds and dry fuels are raising fire weather concerns across the central Great Basin and western High Plains. Across the northern Rockies, first winter storm of the season. Read More >

Heavy Rainfall and Flash Flooding This Weekend

Flash Flooding Can Escalate Quickly

Landslide Safety Tips

High Wind Safety Tips

Rain develops this morning and continues into Sunday morning. Total rainfall is mostly expected in the 2-4” range, with locally higher amounts on the southeast-facing slopes of the Appalachians. Confidence in this rainfall forecast is moderate. Based upon this forecast, some nuisance to minor flooding will be possible along streams and in low-lying areas, but widespread flash flooding, or moderate flooding along main stem rivers is unlikely. Confidence in the wind forecast is low at this time, but very gusty winds could develop over the mountains Saturday, possibly resulting in scattered damage to trees and power lines.

Flash flooding can escalate quickly, so make sure you are prepared before severe weather strikes. Ensure you have a way to receive weather warnings on your phone, move to higher ground immediately when a flash flood alert is issued, and never enter floodwaters whether you are in a vehicle or on foot.

Heavy tropical rainfall can significantly increase the threat of landslides across the mountains, making it critical to prepare before storms arrive. Take time to assess your landslide risk if you live on steep terrain or a modified slope, make an evacuation plan if you are in a vulnerable area, and stay weather-aware, as rainfall amounts exceeding five inches in 24 hours greatly heighten the danger.

Strong winds can transform everyday outdoor objects into dangerous projectiles, so take a few minutes to secure your property before high winds arrive. Be sure to store or tie down outdoor items like patio furniture, sports equipment, trash cans, and trampolines to prevent damage and keep your neighborhood safe.