National Weather Service United States Department of Commerce

Tracking Severe Thunderstorms and Excessive Rainfall in the Southern U.S.; Winter Storm to Impact the Northern U.S.

A storm system will shift from eastern Texas into the lower Mississippi Valley Monday with additional threats of severe thunderstorms and heavy to excessive rainfall which may bring flooding. A Flood Watch remains in effect. In the northern U.S., a storm will bring heavy snow and gusty winds over parts of the northern Rockies, northern Plains, and Upper Midwest Monday into Wednesday. Read More >

The National Weather Service has made changes to our Flash Flood Warnings that includes impact based information and tags at the bottom of the warnings based on expected severity.  These features are similar to our current Severe Thunderstorm and Tornado Warnings.

The Flash Flood Warnings (FFW) will now have tags and information at the bottom that includes:

  • No Tag ("base" FFW) - Used when flash flooding impact damage is possible.
  • Considerable - Unusual severity - urgent action is needed.
  • Catastrophic - Threat to life and catastrophic damage; levels rarely seen.

IMPORTANT:  Wireless Emergency Alerts (WEAs) via cell phones will ONLY forward warnings with the "considerable" or "catastrophic" tags.