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Over 10 inches of rain has fallen in parts of Oklahoma, Minnesota and Wisconsin in the last 24 hours. Below is the map from the NWS Gauge-Adjusted Doppler-Precip Site showing the amounts in Oklahoma:
The Oklahoma event is actually the remnants of Tropical Storm Erin and it's funny, if you look at the radar animation from the last 4 days (see link below), it looks like it lost its circulation as it moved northwest across West Texas, but then regained it this morning over Oklahoma, in fact it has a rain-free "eye" feature this morning.
Probably what we are really seeing is an MCV as the result of the overnight MCS [JessePedia] which developed with the remnants. You can see a satellite shot of the MCS last night below (note the purple dot is not an "eye" feature but rather a taller/colder "overshooting top" [WikiPedia].
At this location, you can download the satellite loop showing the MCS as above, a water vapor satellite loop, a regional 4-day radar animation, a local radar animation from this morning in Oklahoma City showing the "eye." USAToday has an article detailing the flooding and power outages in the state.
Here's what Wisconsin and Minnesota got last night:
Incredibly, Forbes reports that five people were killed in Minnesota by the flooding, and they quote 12 inches as the highest amount. This flooding was caused by a slow moving, intense line of thunderstorms last night.
Two days of rare September severe thunderstorms in Pennsylvania have dropped tornadoes and funnel clouds, and I was able to chase some of them.
There are quite a few notable low pressure systems or "cyclones" worldwide today. One of them, Typhoon Meranti, is the biggest in a while.
On the evening of September 5, 1996, as Hurricane Fran approached the North Carolina coast, I embarked on my first-ever hurricane storm chase trip.
Twenty years ago, Hurricane Fran roared into eastern North Carolina, and I was there -- and I've got the VHS tapes to prove it.
Until yesterday, Hurricane Wilma was the last Hurricane to strike the state of Florida, 11 years ago.
Hurricane Irene caused over $16 billion in damage in 2011. A the 5-year anniversary, I look back on my experiences with the storm.