The Storm Prediction Center has upgraded the severe weather threat level to “moderate,” a level 4 out of 5, indicating an increased risk of intense storms in the St. Louis area as conditions worsen on Friday. A low-pressure system in Nebraska is expected to contribute to storm development, particularly along a dry line and cold front.
Strong winds exceeding 50 mph are anticipated even without thunderstorms, with wind damage becoming a significant concern. The forecast suggests a 45% chance of damaging winds exceeding 60 mph, and a potential for tornadoes, with a 10% chance of significant tornadoes (EF2 or higher). Hail, possibly reaching golf ball size, is also expected.
As storms develop Friday evening, the radar may show supercell storms capable of tornadoes. However, as these storms merge into a line, damaging gusts of 70-80 mph are likely. The article stresses the importance of having a safety plan in place, especially as these fast-moving storms may occur after dark. Overall, the major threats from this weather system are high winds and the possibility of tornadoes.
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