Whew!  What a way to finish up EWP2010.  I will post more pictures of our products and warnings on the weekly summary.  Just around 8pm, storms exited the FGF CWA, and our two forecasters there began their surveys.  In addition, a large rotating cluster of tornadic supercells raked across southern Minnesota near Albert Lea.  The radar presentation on that event brought back memories of what the Beloit Kansas supercell complex from 6/15/92 must have looked like:  “TORNADOES ALQDS”.   Note the 5 or 6 simultaneous TVSs!

Our forecasters working the FGF (Grand Forks ND) WFO had to contend with “lines” of tornadic storms.  For example:

There have been 35 tornadoes so far reported on the SPC logs (some in BIS and DSM CWAs), and we expect that the number will increase greatly as all of the reports start filtering in.  This was by far the most active (non-Oklahoma) event for the Experimental Warning program in 4 years of HWT activities.  And to top off the success, there were barely any AWIPS technical issues at all – the heavily taxed system finally worked well!

Greg Stumpf (EWP Weekly Coordinator, 14-18 June 2010)