Understanding Weather Alert Days

What to do when Storm Team4 has declared a Weather Alert Day

Storm Team4 has declared Monday a weather alert day, as temperatures could reach 100 degrees. A heat advisory will be in effect.

When Storm Team4 declares a Weather Alert Day, we're letting you know that weather is on the way that could be severe, could be dangerous -- or could disrupt your plans.

Here's what to expect from us, and how to stay prepared when a Weather Alert Day is coming.

What is a Weather Alert Day?

Storm Team4 will activate Weather Alert Days when we predict significant or disruptive weather. The weather might be several hours -- or even days -- away, but we can tell it's going to have a big impact on your life.

On a Weather Alert Day, our meteorologists will provide weather updates more frequently. Make sure to tune in to NBC4, watch our NBC Washington app, check NBCWashington.com or follow Storm Team4 on Facebook and Twitter.

When will Weather Alert Days happen?

Weather Alert Days happen when weather conditions threaten your safety in Washington D.C., Maryland, Virginia and West Virginia. They also happen on days when the weather is a nuisance and may cause you to change your plans.

Weather Alert Days can be issued at a moment's notice as conditions change.

What could trigger a Weather Alert Day?

  • Strong thunderstorms/ high winds
  • Flooding
  • Potential hail
  • Increasing tornado risk
  • Predicted snow or ice on roads, trees, or power lines
  • Heat index above 105 or wind chill below 10 degrees
  • Tropical system approaching the area

What if the weather gets even more serious?

Weather Alert Days are separate from a severe weather warning such a tornado watch or tornado warning. Storm Team4 meteorologists will issue a separate alert for these weather conditions. You can subscribe to get weather alerts sent to your phone by downloading the NBC Washington app.  

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