Heavy Snow in the Northwest; Wintry Mix from the Great Lakes to Northeast

Two cold fronts will pass through the Northwest U.S. this week with the main impact being heavy mountain snow across the Cascades, and northern Rockies. A quick moving storm system will bring mixed precipitation including some freezing rain to the Upper Midwest and Great Lakes today then the Northeast U.S. tonight into Wednesday. Read More >

Back to WFO Key West Tropical Storm/Hurricane Threats and Potential Impacts Page

Tornado Threat

Potential Impacts From Tornadoes

EXTREME

Potential for an outbreak of tornadoes

DEVASTATING TO CATASTROPHIC

To be safe, aggressively prepare for the potential of devastating to catastrophic tornado impacts.

HIGH

Potential for many tornadoes

EXTENSIVE

To be safe, aggressively prepare for the potential of extensive tornado impacts.

MODERATE

Potential for several tornadoes

SIGNIFICANT

To be safe, earnestly prepare for the potential of significant tornado impacts.

ELEVATED

Potential for a few tornadoes

LIMITED

To be safe, prepare for the potential of limited tornado impacts.

LITTLE TO NONE

Tornadoes not anticipated

LITTLE TO NONE

No immediate preparations needed to guard against tropical tornadoes.

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