GRG T4 (12 & HO) Thunderstorms

2

Wind speed is taken at a ____ minute average.

Probability Forecasting

Predicting probability of a weather event. (EX: 15% chance of rainfall)

Point Probability

20% chance of rainfall means there is a 20% _____ ______ that rain will hit the ground in the forecast region.

Confidence (Surity), Max Coverage

When predicting rainfall, consider _____ & ____ _______, and then multiply.

Faraday Effect

Lighting is directed around you towards the ground, making cars relatively safe for humans when struck by lightning.

Foundation

mT air is the ______ for thunderstorms.

Thunder

If you hear ______, lightning risk is present.

95%

_____ of thunderstorms are non-severe.

2000

At any given moment, an estimated ____ thunderstorms are in progress worldwide.

1%

Less than ___ of thunderstorms produce tornadoes.

Within, Boundaries

Non-severe thunderstorms are usually found _____ mT airmass. Severe are found on ______.

Atmospheric Instability, Moisture, Lift

Ingredients for Thunderstorms (3)

1in+ Hail, 58mph Wind, Tornado

Conditions for Severe Thunderstorms (3, but only need to meet 1)

5%

Less than ____ of thunderstorms are severe.