National Weather Service United States Department of Commerce

Super Typhoon Bavi to Impact Guam and the Mariana Islands; Excessive Rainfall and Flooding Threat in the Mid-Atlantic

Catastrophic Super Typhoon Bavi's eyewall has reached Rota and is expected to bring dangerous winds, heavy rainfall and storm surge to Guam, Rota, Tinian and Saipan. A Typhoon Warning remains in effect. Heavy to excessive rainfall will continue to bring a flooding threat from coastal Mid-Atlantic to southern New England through Monday. Read More >

 

The National Weather Service is implementing new heavy snow criteria. This is being done across the contiguous United States. 

Changes are being done to eliminate non-meteorological discontinuities such as NWS office boundaries, adjust the length of time from a specific time frame to the overall event (not to exceed 48 hours), and to improve decision support services and communication. 

An interactive mapping of the criteria is available at this link:
https://www.weather.gov/snow-criteria

Mapping of heavy snow criteria across central Illinois and nearby areas

 

For central Illinois, the following changes are being made:

Old heavy snow criteria for winter storm watches and warnings:

All of the Lincoln NWS coverage area 6 inches in 12 hours, or
8 inches in 24 hours

New heavy snow criteria for winter storm watches and warnings:

Fulton, Knox, Marshall, McLean, Peoria, Stark, Tazewell, and Woodford Counties

Includes Galesburg, Peoria, and Bloomington/Normal

6 inches for an event

Champaign, Christian, Clark, Clay, Coles, Crawford, Cumberland, De Witt, Douglas, Edgar, Effingham, Jasper, Lawrence, Logan, Macon, Mason, Morgan, Moultrie, Piatt, Richland, Sangamon Scott, Schuyler, Shelby, and Vermilion Counties

Includes Champaign/Urbana, Danville, Decatur, Effingham, Flora, Havana, Jacksonville, Lincoln, Mattoon, Newton Olney, Paris, Shelbyville, Springfield, and Taylorville

5 inches for an event