Frequently Asked Questions

1. What is the difference between weather Watches and Warnings?
A WATCH (Severe Thunderstorm or Tornado) is issued when severe thunderstorms and/or tornadoes are possible in and near the watch area. It does not mean that they will occur. It only means they are possible.
Severe thunderstorms are defined as follows:
1) Winds of 58 mph or higher
AND/OR
2) Hail 1 inch in diameter or larger.
A WARNING is issued by your local NWS office when a Severe Thunderstorm or Tornado is imminent or occurring. Seek safe shelter and observe safety protocols.
2. Can a Severe Thunderstorm Warning be issued without a Watch in effect?
Yes it can. While the majority of the time a watch is in place prior to a warning being issued, there are times a warning is issued for a storm with no watch having been issued. This is usually in a situation where a lone storm or maybe a couple storms briefly get strong enough to produce damaging winds or hail in a localized area, but the overall conditions do not support widespread severe weather.
3. What is meant by the Marginal, Slight, Enhanced, Moderate, and High risk categories in the Convective Outlook?
Marginal, Slight, Enhanced, Moderate, and High risks represent progressively larger threats for organized severe storm episodes. These risks, along with their numerical, abbreviated labels, and colors (1-MRGL-dark green, 2-SLGT-yellow, 3-ENH-orange, 4-MDT-red, 5-HIGH-magenta), are based directly on Severe Thunderstorm Risks issued by the Storm Prediction Center.

4. What does it mean to be “Weather Ready Nation (WRN)”?
NOAA’s Weather–Ready Nation (WRN) is about readying your community for extreme weather, water, and climate events. The devastating impacts of extreme events like record breaking snowfall, violent tornadoes, destructive hurricanes, widespread flooding, and devastating drought can be reduced by taking advanced action, which is why the Weather–Ready Nation initiative is so important. You can get more information at the national WRN site, linked here: https://www.weather.gov/wrn.
5. How Do I Prepare for a Tornado? What Steps Do I Take When a Warning is Issued?
YouTube - Tornado Safety (ASL/CC)
YouTube - Preparedness Videos
YouTube - Get Weather Ready: Before A Tornado
YouTube - Get Weather Ready: During A Tornado
YouTube - Get Weather Ready: After A Tornado
Find more information at the following address: https://www.weather.gov/safety/tornado-prepare.
6. How many tornadoes occur per year in our area?
Tornadoes per County in Virginia Tornado Activity by Month
Tornado Activity by Time of Day Tornado Activity by Intensity

Also, The Storm Prediction Center has prepared a series of charts based upon climatology, received severe weather reports from NWS Storm Data, and annual summaries. Their page is located here: https://www.spc.noaa.gov/wcm/#torclim
7. I have additional questions on tornadoes not answered here. Where can I look for more information?
Additional FAQ on tornadoes are answered at the Storm Prediction Center Tornado FAQ page: https://www.spc.noaa.gov/faq/tornado/
8. What are Wireless Emergency Alerts (WEA)?
Wireless Emergency Alerts (WEA) are emergency messages, usually less than 90 characters, that are sent directly to your phone by authorized government alerting authorities through your mobile carrier. Government partners include local and state public safety agencies, FEMA, the FCC, the Department of Homeland Security, and the National Weather Service. Get more information at https://www.ready.gov/alerts.
9. What is the SKYWARN Program?
The SKYWARN program is a group of volunteers that are trained by the National Weather Service to properly observe and report severe weather conditions to the National Weather Service. These observations serve as critical ground truth and are one of the key ingredients to our severe weather warning process. You can find and register for future training classes, see recorded training modules, and get more information at https://www.weather.gov/akq/SKYWARN.