National Weather Service United States Department of Commerce

Snow Across the Great Lakes, Central Appalachians, and Northeast; Unsettled Weather in the West

Light to moderate snow will continue into Saturday over the Great Lakes, Central Appalachians, and Northeast. This weekend into next week, a series of atmospheric rivers will bring gusty winds, periods of heavy rain, and mountain snow to northern California and the Pacific Northwest. Colder temperatures are in store for the weekend from the Great Lakes to East Coast. Read More >

If you would like to report severe weather, the best way to contact us is by calling toll free at 1-800-446-1428.  Skywarn™ Spotters and the general public can also provide us reports in other ways. Skywarn™ Spotters are an important asset to the NWS. If are interested in becoming a Skywarn™ Spotter then check out this link.

Other ways to report severe weather:

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Your severe weather reports reach forecasters in real time and, after quality control, may be included in a Local Storm Report (LSR) product. 

If you experience any of the following,

Please Report It!

Thunderstorm Criteria:

    Hail (Be specific with regard to size)
    • Report any size and specify diameter.
    • Quarter-sized (1") and larger is severe!
    • Hail Sizes Chart
  • Wind Gusts
    • 58 mph or greater; specify whether estimated or recorded
    • large branches downed (specify diameter of branch)
    • Trees/power lines downed
    • Structural damage to buildings (roof, windows, etc.)
  • Rainfall
    • 1 inch or greater in an hour and every inch thereafter
    • 2 inches or greater storm total
  • Flooding
    • Report any flooding
    • Streams/Rivers -- also, when nearing bankfull
    • Street (depth of water)
  • Low visibility due to: 
    • Blowing dust or sand.
    • Fog
  • Tornadoes or funnel clouds (be very wary of look-alikes; watch for rotation)
    • Rotating appendage from a cumulonimbus cloud not touching the ground

Winter Criteria:

  • Heavy Snowfall
    • When snow rates of 1" per hour are occurring. 
    • Then accumulations at 4 inches, 6 inches, and every 3 inches thereafter (eg. 2,4,6,9,12,etc)
    • Give a final report/total at the end of the storm
    • Thunder Snow - time and location
  • Ice
    • Any occurrence, or accumulation, of freezing rain
    • Accumulation of 1/4" or more
  • High Winds:
    • ​Report gusts over 50 mph.
    • Damage of any kind including trees and branches broken or blown down and downed power poles causing power outages.
  • Low visibility due to:
    • Blowing dust 
    • Blowing snow.
  • Flooding
    • Report any flooding
  • General Winter Reports
    • When forecast differs significantly from observed (i.e. snowing with no snow in forecast, sleet...when only snow is forecast...)
    • Any other significant weather occurrence(i.e. damage from strong winds not associated with a thunderstorm)