This radar loop from 1 year ago this week shows how heavy rain before Helene, called a Predecessor Rainfall Event, followed by Hurricane Helene making landfall in Florida & dumping rain all across the southeast made for one of the worst natural disasters in U.S. history. If you watch when the heaviest rain hits western NC, it's raining heavy for about 3 days straight. Flash flood warnings and flash flood emergencies show up in red and purple boxes through the event. Thanks to Jared Rennie and NO

Tornado Basics

Water vapor imagery from NOAA's GOES West is tracking the Atmospheric River that continues to bring gusty winds and locally heavy precipitation to the western U.S. today. Flood Watches are in place for much of Southern California, with Winter Storm Warnings in effect for higher elevations. Latest: weather.gov | NOAA Satellite and Information Service

Here's our final SWPC walk-through video to give you the latest space weather info about this past few days of activity. Thanks for your comments, it's quite clear you appreciate these & want to see them again for future significant events. We'll do our best to make that happen. | NOAA NWS Space Weather Prediction Center