National Weather Service United States Department of Commerce

Upcoming Spotter Training Sessions Info:

(Dates are BelowSpotter Show Slideshow Download)

 

Current Severe Weather Information

 

Reference Information

 

Send in a Report

  

Reference Information 

  Hail Size Chart: (diameter in inches)

  • Pea Size: 0.25 inches
  • Small Marble: 0.50 inches
  • Penny: 0.75 inches 
  • Nickel: 0.88 inches
    Any hail size below is severe thunderstorm criteria:
  • Quarter: 1.00 inches
  • Half Dollar: 1.25 inches
  • Ping Pong Ball: 1.50
  • Golf Ball: 1.75 inches
  • Hen Egg: 2.00 inches
  • Tennis Ball: 2.50 inches
  • Baseball: 2.75 inches
  • Grapefruit: 4.00 inches
  • Softball: 4.50 inches

Wind Speed Estimate:

  • 25-31 mph: Large branches in motion; whistling heard in telephone wires.
  • 32-38 mph: Whole trees in motion; inconvenience felt walking against the wind.
  • 39-54 mph: Twigs break off trees; wind generally impedes progress.
  • 55-72 mph: Damage to chimneys and TV antennas; pushes over shallow rooted trees.
  • 73-112 mph: Peels surfaces off roofs; windows broken; light mobile homes pushed or overturned; moving cars pushed off road.
  • 113-157 mph: Roofs torn off houses; cars lifted off ground.

 

 

 Spotter Training Classes

 

The 2021 Spotter Training will be online! See below for specific times and registering links. Spotter training is also available anytime from our partners at COMET Spotter Show Slideshow Download

 

Frequently Asked Questions about LIVE ONLINE Spotter Training Sessions

  1. Do I need to preregister for these sessions? YES. Click on the link specific to the date/time that you plan to attend to register. After registering, you will receive a confirmation email containing information about joining the webinar.  If you do not receive a confirmation email, please check your spam folder in email. If it's not there, then please register again
     
  2. About how long do the sessions last? Approximately 2 hours.
     
  3. How many of these training sessions do I have to attend? Just one. All sessions will contain the same content.
     

 

Date Click Link to Register For Session
March 8, 2021 at 6:30 PM EST Register Here
March 10, 2021 at 4:00 PM EST Register Here
March 13, 2021 at 10:00 AM EST Register Here
March 22, 2021 at 6:30 PM EDT Register Here
March 24, 2021 at 2:00 PM EDT Register Here