Significant Weather

 

Severe Weather

  • Will give a detailed outlook plus a map displaying where severe weather will be a possibility.
  • Our outlook maps go out to 7 days in advance.
  • For day's 1-3 a more in depth forecast will be given as we show where the highest chances are that someone may see tornado, large hail, and/or damaging winds.
  • For day's 4-7 we will display a short discussion to give a heads up on any potential severe weather, with a map pin-pointing the area of greatest concern.
  • Our categorical maps will be color coded.
  • Map one will display where severe weather is possible.  All locations will be enclosed by either a brown circle, minimal severe weather, a green circle, slight severe weather event, a red circle, significant severe weather outbreak, and/or a black circle, dangerous severe weather outbreak.
  • Minimal risk:  Probability of seeing at least some form of severe weather
    • Green-5% chance
  • Slight risk:  Probability of you seeing some form of severe weather
    • Orange-10% chance
    • Red-20% chance
  • Significant severe weather:  Probability of you seeing at least one form of severe weather.
    • Blue-25% chance
    • Pink-40% chance
  • Dangerous severe weather outbreak:  Probability of you seeing multiple severe weather events
    • Black-60% chance
  • The next maps will display 3 catagories for the threat for tornados, large hail, and damaging winds.

These maps are color coded with the following percents for tornados:

  • Slight risk:  Probability of 10 or more tornados within the colored circle.
    • Green-2% chance
    • Orange-5% chance
  • Significant severe:  Probability of 15 or more tornados with at least 3 strong or 1 violent tornado.
    • Red-10% chance
    • Blue-15% chance
  • Dangerous severe weather outbreak:  Probability of at least 15 tornados, or multiple long-tracking violent tornados.
    • Pink-30% chance
    • Black-60% chance

These maps are color coded with the following percents for Large Hail:

  • Minimal severe weather:  Probability of at least 5 severe hail reports.
    • Green-5% chance
  • Slight risk:  Probability of at least 10 severe hail reports with max hail size of 1 1/2" expected.
    • Orange-15% chance
    • Red-20% chance
  • Significant severe:  Probability of at least 15 severe hail reports with max hail size of 2-3" expected
    • Blue- 30% chance
  • Dangerous severe weather alert:  Probability of at least 20 or more severe hail reports and hail the size of baseballs can be expected.
    • Pink- 45% chance
    • Black-60% chance

These maps are color coded with the following percents for damaging winds:

  • Minimal severe weather:  Probability of at least 5 severe wind reports.
    • Green-5% chance
  • Slight risk:  Probability of at least 10 severe wind reports with max winds of 50-60 mph expected.
    • Orange-15% chance
    • Red-20% chance
  • Significant severe:  Probability of at least 15 severe wind reports with max winds up to 65 mph expected
    • Blue- 30% chance
  • Dangerous severe weather alert:  Probability of at least 20 or more severe wind reports and winds of an excessive of 70 mph can be expected.
    • Pink- 45% chance
    • Black-60% chance

 

  • The severe weather page is updated twice a day.  The times are as followed:  8:30-9:30 am, 0Z and 6Z model runs will be used.  4:30-6:00 pm a final outlook will be issued.  Times are subject to change, especially during a potential major severe weather outbreak, where the page may be updated up to 4 times a day.

Winter Weather

  • A winter weather alert will be issued when significant accumulations of snow is expected (where significant amounts are not known to occur to often; such as, the southeast receiving 6+ inches).  Or for blizzard conditions and ice storms.
  • A detailed map with accumulation predictions, and a forecast will be issued for each major winter weather event.

Tropical Weather

  • All forecasts and outlooks will be used from the National Hurricane Center, nhc.noaa.gov.  It will include projected path, current satellite imagery, and an detailed forecast.

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