National Weather Service United States Department of Commerce

Severe Thunderstorms in the East Sunday; Excessive Heat Lingers in the Southern U.S. and Returning to California

Scattered damaging winds from severe thunderstorms will be possible across parts of the Northeast and Mid-Atlantic States Sunday. Excessive heat will continue over the southern U.S. Sunday before another round of heat arrives Monday through the central and southern U.S. spreading into the East by Independence Day. California will see excessive heat starting Tuesday. 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:

Storm reports can be submitted through the use of social media. Like us on Facebook and follow us on Twitter.

Storm Reports via Facebook

Storm Reports via Twitter

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)