Clusters of thunderstorms developed along a cool front that moved across Minnesota on Sunday, August 24. A few of these storms produced some severe weather including golf ball sized hail east of Brainerd and hail the size of hen's eggs south of Hillman in Morrison County.
A tornado touched down in rural Benton County and damaged trees and broke windows in buildings and cars. A roof was blown off a barn. This was the first tornado to be reported in Benton County since June 16, 1992 and was the second longest stretch for a county to not have a tornado spotted in its borders. The longest stretch is Carlton County, that has not seen a tornado since June 21, 1986.
Below are storm reports and public information statements from the National Weather Service.
PRELIMINARY LOCAL STORM REPORT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 727 PM CDT SUN AUG 24 2014 ...TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON... ...DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE.... ..REMARKS.. 0605 PM TORNADO 4 W GRANITE LEDGE 45.80N 93.95W 08/24/2014 BENTON MN PUBLIC TORNADO DAMAGE WAS REPORTED BY A TRAINED SPOTTER A QUARTER MILE EAST OF COUNTY RD 22 AND 155TH AVE. NUMEROUS TREES WERE DOWN, WINDOWS WERE BLOWN OUT OF BUILDINGS AND CARS, AND A ROOF WAS BLOWN OFF OF A BARN. PRELIMINARY LOCAL STORM REPORT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 743 PM CDT SUN AUG 24 2014 ...TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON... ...DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE.... ..REMARKS.. 0606 PM HAIL 7 S HILLMAN 45.91N 93.89W 08/24/2014 M2.00 INCH MORRISON MN TRAINED SPOTTER A TRAINED SPOTTER REPORTED 2.2 INCH DIAMETER HAIL 7.5 MILES SOUTH OF HILLMAN. PRELIMINARY LOCAL STORM REPORT NATIONAL WEATHER SERVICE DULUTH MN 1029 AM CDT MON AUG 25 2014 ..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON... ..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE.... ..REMARKS.. 1003 AM FLASH FLOOD DULUTH 46.78N 92.12W 08/25/2014 ST. LOUIS MN PUBLIC FLOODED STREETS IN LAKESIDE. SUPERIOR STREET COVERED CURB TO CURB IN WATER FROM 49TH AVENUE EAST TO 51ST. PRELIMINARY LOCAL STORM REPORT NATIONAL WEATHER SERVICE DULUTH MN 912 AM CDT MON AUG 25 2014 ..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON... ..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE.... ..REMARKS.. 0855 AM HEAVY RAIN DULUTH 46.78N 92.12W 08/25/2014 E2.50 INCH ST. LOUIS MN PUBLIC STORM TOTAL. PUBLIC INFORMATION STATEMENT NATIONAL WEATHER SERVICE DULUTH MN 746 AM CDT MON AUG 25 2014 ...LATEST RAINFALL REPORTS... LOCATION AMOUNT TIME/DATE ASHLAND AIRPORT 3.16 IN 0653 AM 08/25 SAXON 1WSW 3.04 IN 0700 AM 08/25 WASHBURN RAWS 2.93 IN 0702 AM 08/25 WHITTLESEY CRK 2.82 IN 0600 AM 08/25 ASHLAND 2.76 IN 0728 AM 08/25 ASHLAND 2.74 IN 0700 AM 08/25 ASHLAND 2.65 IN 0737 AM 08/25 1 WSW ROBINSON 2.65 IN 0737 AM 08/25 WRENSHALL 2.64 IN 1120 PM 08/24 1 WSW MAPLE 2.24 IN 0732 AM 08/25 4 ENE DULUTH 2.02 IN 0615 AM 08/25 2 NE DULUTH 1.72 IN 0737 AM 08/25 4 SE ARNOLD 1.59 IN 0734 AM 08/25 GILE 1.42 IN 0400 AM 08/25 11 SSE BRULE 1.31 IN 0706 AM 08/25 9 ENE DEER RIVER 1.11 IN 0729 AM 08/25 5 WNW HAWTHORNE 1.07 IN 0739 AM 08/25 HAYWARD 9.2 NNE 1.04 IN 0600 AM 08/25 HAYWARD 1.03 IN 0653 AM 08/25 2 SE BALL CLUB 0.98 IN 0715 AM 08/25 4 WNW WENTWORTH 0.96 IN 0739 AM 08/25 4 W GRAND PORTAGE 0.91 IN 0644 AM 08/25 SUPERIOR 0.87 IN 0655 AM 08/25 4 W TWO HARBORS 0.83 IN 0700 AM 08/25 APOSTLE ISLANDS RAWS 0.81 IN 0730 AM 08/25 4 NE GRAND PORTAGE 0.77 IN 0700 AM 08/25 SILVER BAY 0.72 IN 0700 AM 08/25 1 NW BEAVER BAY 0.69 IN 0645 AM 08/25 3 SSW BALL CLUB 0.68 IN 0700 AM 08/25 WOLF RIDGE 0.67 IN 0730 AM 08/25 BAYFIELD 9N 0.67 IN 0700 AM 08/25 1 SE MOOSE LAKE 0.65 IN 1200 AM 08/25 MOOSE LAKE RAWS 0.64 IN 0708 AM 08/25 3 WSW TOBIQUE 0.60 IN 0645 AM 08/25 1 SE MISSION 0.57 IN 0645 AM 08/25 2 SSW MEADOWLANDS 0.56 IN 0645 AM 08/25 12 ENE FIFIELD 0.53 IN 0647 AM 08/25 HAYWARD RAWS 0.52 IN 0703 AM 08/25 LUTSEN 0.49 IN 0645 AM 08/25 6 WSW SPIRIT 0.47 IN 0737 AM 08/25 FLOODWOOD 0.46 IN 0645 AM 08/25 SUPERIOR WWTP 0.44 IN 0600 AM 08/25 LITTLEFORK RAWS 0.44 IN 0708 AM 08/25 ISLE 12N 0.43 IN 0730 AM 08/25 DULUTH AIRPORT 0.43 IN 0655 AM 08/25 DULUTH NWS 0.43 IN 0700 AM 08/25 PHILLIPS 0.41 IN 0655 AM 08/25 LAKE WINNIBIGOSHISH 0.40 IN 0700 AM 08/25 GRAND RAPIDS 12N 0.40 IN 0630 AM 08/25 4 ESE NAMEKAGON 0.40 IN 0702 AM 08/25 WILLOW RIVER 0.38 IN 0645 AM 08/25 LITTLEFORK 0.37 IN 0730 AM 08/25 8 WNW MINONG 0.37 IN 0703 AM 08/25 10 WSW FIFIELD 0.36 IN 0738 AM 08/25 17 E BUYCK 0.35 IN 0704 AM 08/25 USDA FORESTRY SCIENCE LAB 0.31 IN 1200 AM 08/25 3 WSW HOVLAND 0.30 IN 0645 AM 08/25 3 SE EFFIE 0.30 IN 0727 AM 08/25 INTERNATIONAL FALLS 0.29 IN 0655 AM 08/25 7 E EFFIE 0.28 IN 0715 AM 08/25 POKEGAMA LK DAM 0.28 IN 0700 AM 08/25 AITKIN 0.26 IN 0730 AM 08/25 2 NNE BIGFORK 0.25 IN 0707 AM 08/25 OBSERVATIONS ARE COLLECTED FROM A VARIETY OF SOURCES WITH VARYING EQUIPMENT AND EXPOSURE. NOT ALL DATA LISTED ARE CONSIDERED OFFICIAL.