
A strong atmospheric river will continue moderate to heavy rainfall with possible flooding, gusty to high winds, and mountain snows for parts of the Northwest U.S. today into Thursday. Additional impacts are likely into Friday with a cold front. A fast-moving storm system will cross the Northeast U.S. today into Thursday with gusty to high winds and areas of rain and high elevation snow showers. Read More >
Showers and thunderstorms tracked through Southern Wisconsin during the morning of Saturday, July 18th and again during the afternoon.
There were many reports of straight-lined wind damage. However, NWS storm survey results indicate a tornado caused some damage in East Central Rock County into West Central Walworth County from 2:40 to 2:50 pm. This is between Janesville and Elkhorn. It was determined to be an EF-1 tornado with winds up to 100 mph. It was about 50 yards wide with a path of about 5 miles. There were two main areas of EF-1 damage with farm field damage in between.
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| Barn Damaged in the Avalon/Johnstown area in Rock County | |
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| A shed collapsed in far western Walworth County, just north of Darien | |
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| Storm Relative Velocity- The bright red (outbound) and green (inbound) within the black circle identify rotation. This area coincides with reports of tornado damage. |
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| Brian Kerkman sent this picture along indicating he captured the tornado as it touched down. It's a little tough to see the condensation funnel against the dark backdrop, but it's there! |
| Tornado Path |
This tornado brings the statewide tornado count for 2015 up to 12 tornadoes; 3 EF-1s and 9 EF-0s. Since 2001, Wisconsin averages approximately 26 tornadoes statewide annually.
National Weather Service
Milwaukee/Sullivan
-Cronce