The San Bernardino County Sheriff’s Department said it was investigating what role, if any, late-February snowstorms may have played in the demise of at least eight people, most of them elderly, found to have died alone while snowbound in their homes over the past two weeks. The latest deluge from dense streams of Pacific moisture sweeping California’s skies soaked some mountain areas still clogged with piles of snow dumped by a recent spate of paralyzing blizzards, while bringing even more snow to higher elevations. REUTERS/Nathan FrandinoĮmergency officials in several California counties spent Friday patrolling levies and swollen rivers as an “atmospheric river” storm drenched the already-sodden state with torrential rains, causing floods that washed out roads and prompted evacuations. The Lower Fox River at New Munster is forecast to crest near major flood stage on Wednesday.Floodwaters from the Pajaro River are seen in Pajaro in Monterey County, California. Precipitation also led to or is forecast to lead to minor flooding at locations along the Root, Lower Fox, and Milwaukee Rivers. Localized flooding occurred in other areas along the lakeshore as well, leading to abandoned cars in Milwaukee and a water rescue in West Allis. This flooding was observed in Riverfront Park, impacted many businesses along the riverfront boardwalk, and led to closures along Broughton Drive. Notable flooding occurred in Sheboygan as heavy rainfall caused the Sheboygan River to crest in moderate flood stage and onshore waves forced water to back up into the mouth of the river. Here are some amounts from around southern WI:
The map shown below shows estimated amounts based upon local storm reports. The highest rain amounts were confined to areas along the lakeshore, most notably in Sheboygan and Ozaukee counties. This mode of precipitation production continued for much of the morning and early afternoon on the 17th, before more convective elements brought heavy rain along the advancing cold front during the afternoon hours and into the evening later in the day. Precipitation started late in the evening on May 16 and was driven by warm air advection and ascent due to the upper level low. This led to a period of coastal flooding and enhanced shoreline erosion for lakeshore communities.īelow is a radar loop that encapsulates the rain event. Additionally, gusty E-NE winds to 35 mph and favorable fetch over Lake Michigan caused wave heights to approach 7-10 feet. With the abundance of rain falling during a relatively short period of time, areal and river flooding occurred, putting susceptible locations underwater and blocking roadways in spots. This system dumped anywhere from 3 to 7 inches of rain over areas generally along and east of Interstate 39 during an approximately 2 day period, with the highest amounts being recorded in counties along the Lake Michigan shoreline. Late May 16 through early May 18 proved to be a rather soggy period across southern Wisconsin as a very slow-moving low pressure system impacted the area. Slow-moving Weather System Dumps Heavy Rain/Causes Flooding across Southern Wisconsin
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