Here is an update concerning the severe weather threat this afternoon through tomorrow morning:
Changes from previous update: The severe weather has been broken into two rounds:
- Round 1 beginning this afternoon and generally slightly weaker
- Round 2 beginning late tonight through Sunday morning and slightly stronge
WHAT: SLIGHT RISK of Severe Weather resulting in isolated severe thunderstorms. SLIGHT RISK of excessive rainfall leading to flash flooding.
WHEN: A line of storms will enter the area from the west and northwest Saturday afternoon to evening and a second line will enter late Saturday night.
WHERE: Mainly west of the I-55 corridor.
CONFIDENCE: We are confident that there will be thunderstorms across the area and that a few will be strong to marginally severe. Some could cause ponding of water in low lying areas and areas of poor drainage.
Impacts: The main threats associated with any storms that become severe will be:
- Wind gusts greater than 60 mph are possible.
- Winds of this magnitude are capable of causing damage to trees and power lines, leading to isolated/scattered power outages.
- A few tornadoes will be possible.
- Heavy rainfall causing isolated flooded locations
