Heavy Rainfall to Bring Flooding Threat to California; Heavy Snow in the Sierra

A strong atmospheric river will bring heavy rainfall to California through the holiday week. The heaviest rainfall is expected on Wednesday in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall is expected in the Sierra Nevada from the atmospheric river, raising concerns for major snow‐load impacts. Travel may be difficult to impossible over the passes. Read More >

Overview

During the morning hours of June 11, 2017, a line of severe thunderstorms trekked eastward out of South Dakota, across Southern and Central Minnesota, and through Northern Wisconsin into the Upper Peninsula of Michigan. The system produced widespread wind gusts, large hail, and a tornado. Radar output encompassing the period from initial storm development around 1 AM CDT through 3 PM CDT is shown below.

Tornado
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Tornado:

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Tornado - Kandiyohi, MN
KANDIYOHI COUNTY

Date	June 11, 2017
Time (Local)	7:31 - 7:33 AM CDT
EF Rating	1
Est. Peak Winds	90 mph
Path Length	1.63 miles
Max Width	300 yards
Injuries/Deaths	0
Summary: The tornado mostly hit trees and crops, but during the latter half of its path, the tornado did move across or just south of a couple metal farm buildings, causing heavy damage.

Track Map

The Enhanced Fujita (EF) Scale classifies tornadoes into the following categories:

EF0 Weak 65-85 mph	EF1 Moderate 86-110 mph	EF2 Significant 111-135 mph	EF3 Severe 136-165 mph	EF4 Extreme 166-200 mph	EF5 Catastrophic 200+ mph