NWS Seattle Briefings & Information

Heavy Rainfall to Continue Through Tonight in Central Texas; Heat in the East, Interior Northwest, and Southwest

Isolated heavy rainfall will continue through tonight across portions of central Texas, though some relief from the heavy rain is expected on Tuesday. Heat and humidity will remain in place across the Eastern U.S. and interior Northwest U.S. over the next few days with widespread moderate to major Heat Risk. Dangerous heat will build into the Desert Southwest Tuesday through Thursday. Read More >

Weather Risk Outlook

The Weather Risk Outlook colors are determined after NWS Seattle meteorologists examine both the impact level of potential weather scenarios AND the associated probability of those scenarios. The resulting outlook displays the highest risk for each day.

NWS Seattle meteorologists first use the impact table to determine the level of impact expected with a forecast weather event.

NWS Seattle meteorologists then determine the color by determining the probability of occurrence using all the available information and then reference the matrix to determine the risk level associated with the forecast weather event.