National Weather Service United States Department of Commerce

A Potential East Coast Winter Storm Beginning On Friday

A potential winter storm may impact the East Coast beginning Friday through the weekend. A pair of storm systems may meet and combine off the Eastern Seaboard into a powerful low pressure system. At this time, heavy snow, gusty winds and coastal hazards are possible from North Carolina to New England with the most significant impacts in eastern New England. This forecast will continue to evolve. Read More >

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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)