A fairly significant line of strong to severe storms rolled across southern Minnesota Wednesday night/early Thursday morning. Heavy rain and loud thunder clipped the southern metro, but there were a few severe storm reports in south-central Minnesota.
Some of the severe storm reports from PM Wednesday to AM Thursday shows that 1.25" diameter hail fell in Courtland as well as thunderstorm wind damage in Blue Earth and Ellendale.
Tornado on Wednesday?
Going back to Wednesday. An isolated storm developed in the afternoon near Villard, MN and was actually responsible for spawning a tornado. There were reports of: BOATS FLIPPED ... SHED DAMAGED AND SHINGLES OFF ROOFS NEAR AMELIA LAKE.
Radar From Tornadic Storm Wednesday Afternoon
This is what the radar looked like as the storm passed over the Lake Amelia area. Note the radar on the left shows a fairly small "hook" near Villard and Amelia Lake, while the screen on the right shows the inbound/outbound winds and a fairly tight couplet (red and green close together). This would indicate tight rotation within the storm.
By Paul Douglas
THURSDAY: Partly sunny, cooler and less wind. Wake-up: 58. High: 70. Winds: W 10-15mph.
Average Low: 52F (Record: 34F set in 1907)
*Daylight Gain Since Winter Solstice: ~6hours & 30mins
1.2 Days Before Last Quarter
...SUMMARY... SEVERE THUNDERSTORMS WITH ISOLATED LARGE HAIL AND WIND DAMAGE WILL BE POSSIBLE OVER PORTIONS OF EASTERN TEXAS INTO EASTERN OKLAHOMA ON FRIDAY...WITH ISOLATED SEVERE STORMS FROM WESTERN OKLAHOMA INTO CENTRAL KANSAS. MARGINALLY SEVERE STORMS MAY ALSO OCCUR FROM CENTRAL NEW YORK INTO WESTERN NEW ENGLAND. ...SYNOPSIS... A SHORTWAVE TROUGH WITH 40-50 KT MIDLEVEL SPEED MAX WILL EJECT NEWD FROM THE SRN PLAINS ON FRI INTO THE MID/UPPER MS VALLEY BY SAT MORNING WITH A QUASI-STATIONARY SFC TROUGH EXTENDING FROM ERN NEB TO A CNTRL KS LOW AND WITH A DRYLINE EXTENDING SWD INTO WRN TX. AN EXPANSIVE AREA OF MID TO UPPER 60S F DEWPOINTS WILL EXIST ACROSS THE CNTRL AND SRN PLAINS WITH AMPLE INSTABILITY TO SUPPORT STRONG TO SEVERE STORMS.
...SUMMARY... MARGINALLY SEVERE THUNDERSTORMS WITH HAIL AND STRONG WIND GUSTS WILL BE POSSIBLE ACROSS THE SOUTHERN PLAINS...ARKLATEX...OZARKS AND LOWER MISSOURI VALLEY.
1. Shower activity associated with the low pressure area located between Bermuda and the Bahamas has become somewhat better organized since yesterday, and the circulation of the low has become a little better defined. Environmental conditions are expected to be generally conducive for a tropical or subtropical cyclone to form on Friday or Saturday while this system moves west-northwestward or northwestward toward the southeastern United States coast. All interests along the southeast coast from Georgia through North Carolina should monitor the progress of this low. An Air Force Reserve Hurricane Hunter aircraft is scheduled to investigate the low on Friday afternoon. The next Special Tropical Weather Outlook on this disturbance will be issued by 8 AM EDT Friday morning. For additional information on this system, see High Seas Forecasts issued by the National Weather Service. * Formation chance through 48 hours...high...80 percent * Formation chance through 5 days...high...80 percent High Seas Forecasts issued by the National Weather Service can be found under AWIPS Header NFDHSFAT1 and WMO Header FZNT01 KWBC. Forecaster Kimberlain