Thunderstorm activity in our region has been relatively quiet, thanks to La Niña, the cooler than normal sea-surface temperature event in the waters of the south-central Pacific. However, severe weather conditions can occur often in the Inland Empire in June, July and August. A typical strong thunderstorm in our region will usually produce very strong winds, hail, lightning and torrential downpours, and sometimes tornadoes. Tornadoes, especially strong ones, are rare in the Northwest. Idaho averages three twisters a year while Washington and Oregon normally see two per year. By contrast, there are an average of 139 twisters per year in Texas, 57 in Oklahoma and 55 in Kansas and Florida.