|This is a wider view of the radar at 10:19 p.m. The hook echo is clearly evident on this image. The red box is the tornado watch that was in effect.|
|Storm relative velocity image at 10:51 p.m. CDT. The circulation is still evident but is weaker. The violet polygon is a tornado warning and the green polygon is a flash flood warning.|
|Tornado on the ground near Coleridge, NE.|
Photo: Matthew Higgins via Twitter
The National Weather Service in Omaha is still in the process of completing a survey of this storm and noted that several tornado tracks were found. The good news, if you can call it that, is this storm stalled over a sparsely populated area or otherwise damage could have been much worse. It will take a few days to determine the tracks, times, and number of tornadoes that occurred.Here is a preliminary assessment they released today.
For more information and future updates, see the Coleridge Area June 17 tornado page on the NWS Omaha/Valley, NE web site.
The NWS Weather Prediction Center put together this excellent video which shows the development of the storms on satellite, overlaying the surface weather and radar images.
Earlier in the afternoon another large tornado touched down in southeastern Montana in Carter County near the South Dakota border. This had the distinction of being the first ever EF-3 tornado in southern Montana. What caught my eye about this storm was this spectacular wide shot by Roger Hill, a professional photographer. The tornado can be seen just to the right of the bright area on the left side of the storm.
|Carter County, MT tornado on June 17. |
Photo by Roger Hill via Facebook
On Wednesday there were additional tornadoes in South Dakota, and damaging winds from a complex of storms from southern Wisconsin to western Pennsylvania. However, heavy rain was a major occurrence from southeastern South Dakota on Tuesday to Minnesota, Wisconsin, and northern Illinois on Wednesday and Wednesday night. On Monday the slow-moving storms in northeast Nebraska and southeastern South Dakota produced torrential rain. Canton, SD measured 8.43 inches of rain as of 6:00 a.m. CDT Tuesday, and many more locations in southeastern South Dakota measured from 3 to more than 5 inches of rain. 24-hour rainfall amounts in southern Minnesota topped 3 inches in many areas, and totals for the past four days have exceed 6 inches in some locations. Minneapolis set a new calendar record for rainfall for any day in the month of June today (June 19) with 3.95 inches of rain as of 1:30 p.m. There was more rain after that time.
|24-hour rain fall for June 18 (L) and June 19 (R) ending at 7:00 a.m. CDT|