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Severe Thunderstorm Watch 166 Probability Tables

The weather watch probability tables are a non-operational product currently under evaluation at the Storm Prediction Center. For each watch, probabilities for particular events inside the watch (listed below in each table) are determined by the issuing forecaster. The "Low" category contains probability values ranging from less than 5% to 20%, "Moderate" from 30% to 60%, and "High" from 70% to greater than 90%. High values are bolded and lighter in color to provide awareness of an increased threat for a particular event.

You may provide feedback on this non-operational product by writing an e-mail to spc.feedback@noaa.gov. The Product Definition Document is available.

Tornadoes
Probability of 2 or more tornadoes

Low (<5%)

Probability of 1 or more strong (F2-F5) tornadoes

Low (<5%)

Wind
Probability of 10 or more severe wind events

Low (<5%)

Probability of 1 or more wind events > 65 knots

Low (10%)

Hail
Probability of 10 or more severe hail events

Mod (50%)

Probability of 1 or more hailstones > 2 inches

Low (20%)

Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events

High (80%)

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Page last modified: January 01, 1970
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