ST. LOUIS — Strong thunderstorms are expected to develop over parts of the area through the afternoon into the evening. Some of the storms will likely contain strong gusty winds and an isolated tornado cannot be ruled out.
Afternoon temperatures are in the upper 80s and lower 90s before the storms arrive with heat index values approaching 100 degrees. The added humidity and a weather disturbance moving into the region will instigate storm development during the mid-afternoon for areas west and northwest of St. Louis.
Storms are then expected to move east toward the metro area by the evening rush hour. Through the evening, the severe weather threat will shift east into Illinois with the line of storms.
Download the free 5 On Your Side app to get the latest watches and warnings and track conditions live with our interactive radar. Use the links below to download now.
5 On Your Side news app
iPhone | Google Play
By early Thursday morning, the rain chances will diminish. There is a low chance of a spot shower or storm Thursday and a slightly higher chance some of us will see a storm on Friday as we transition into our hot weekend weather pattern.
The main severe weather threat is strong damaging winds. Scattered power outages will be possible where the strongest storms occur. Some hail is possible. There is a chance of an isolated tornado as well.
Dangerous heat will build into the area Friday into the weekend. Weekend heat index values will range from 100 to 110 degrees.
Prolonged exposure to the heat and humidity levels we expect to see this weekend can lead to heat exhaustion or heat stroke.
Plan to reduce any strenuous activity this weekend and stay hydrated. Use sunscreen liberally.
Read more:
