Thunderstorms formed along and just north of a stationary front across Minnesota on September 3rd and 4th. This front separated an air mass with dew point temperatures in the upper 60's to low 70's over central and southern Minnesota and the more comfortable low 60's over northern Minnesota. During the morning and afternoon of September 3rd, thunderstorms with hail the size of half dollars caused damage in central Minnesota including a 25-acre apple orchard near Waverly in Wright County. Hail covered the ground to two to three inches in the same location. Heavy rains fell as well with 2.70 inches falling in just one hour at St. Cloud just after lunch time on the 3rd.
More severe storms continued into the early morning hours of September 4, with 79 mph winds reported at the Staples Airport in Todd County. There were numerous power lines and trees down in Staples, with more mower outages reported between Brainerd and Baxter in Crow Wing County. The highest rainfall total found so far is 4.26 inches at Onamia in Mille Lacs County.
Below are storm reports and public information statements and storm reports from the National Weather Service.
PRELIMINARY LOCAL STORM REPORT...SUMMARY NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 951 PM CDT WED SEP 03 2014 ..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON... ..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE.... ..REMARKS.. 0845 AM HAIL HECTOR 44.74N 94.71W 09/03/2014 M2.00 INCH RENVILLE MN MESONET PEA SIZED UP TO 2 INCH LONG ELIPTICAL. 0853 AM HAIL 7 NNW HECTOR 44.83N 94.77W 09/03/2014 E0.88 INCH RENVILLE MN TRAINED SPOTTER 0900 AM HEAVY RAIN HUTCHINSON 44.89N 94.37W 09/03/2014 E0.00 INCH MCLEOD MN PUBLIC STREET FLOODING REPORTED VIA TWITTER PICTURE. 0900 AM HEAVY RAIN 3 SW PRINSBURG 44.90N 95.23W 09/03/2014 M2.21 INCH KANDIYOHI MN MESONET THREE HOUR TOTAL 0915 AM HAIL 5 NE BUFFALO LAKE 44.79N 94.55W 09/03/2014 M0.75 INCH RENVILLE MN COCORAHS 0915 AM HAIL 4 NNW STEWART 44.78N 94.52W 09/03/2014 E0.50 INCH RENVILLE MN TRAINED SPOTTER ONE TO TWO INCHES DEEP PILES...STILL THERE AN HOUR LATER MINOR CROP DAMAGE NOTED IN NEARBY CORN FIELDS. 0920 AM HAIL 6 NNE STEWART 44.81N 94.44W 09/03/2014 E0.50 INCH MCLEOD MN TRAINED SPOTTER DIME SIZED HAIL REPORTED BY TRAINED SPOTTER. TIME ESTIMATED BASED ON RADAR. 0930 AM HAIL 1 S LAKESIDE 44.81N 94.56W 09/03/2014 M1.00 INCH RENVILLE MN PUBLIC 0957 AM HEAVY RAIN 1 WNW STEWART 44.73N 94.51W 09/03/2014 E2.00 INCH RENVILLE MN TRAINED SPOTTER THREE HOUR TOTAL 1055 AM HAIL 2 W COKATO 45.08N 94.23W 09/03/2014 M0.75 INCH WRIGHT MN AMATEUR RADIO 1115 AM HAIL 3 NNW WAVERLY 45.11N 93.99W 09/03/2014 M1.25 INCH WRIGHT MN PUBLIC TWO TO THREE INCHES DEEP...DESTROYED A 25 ACRE APPLE ORCHARD. 1210 PM HAIL 7 S MORRIS 45.49N 95.91W 09/03/2014 E0.50 INCH STEVENS MN 911 CALL CENTER 1217 PM HAIL 1 S GLENWOOD 45.64N 95.38W 09/03/2014 E1.00 INCH POPE MN TRAINED SPOTTER 1 INCH HAIL REPORTED ALONG ROUTE 104. 1244 PM HEAVY RAIN ST AUGUSTA 45.44N 94.19W 09/03/2014 E2.20 INCH STEARNS MN PUBLIC FELL IN TWO HOURS. 1250 PM HAIL 4 N HANCOCK 45.56N 95.79W 09/03/2014 M1.00 INCH STEVENS MN PUBLIC FELL FOR FOUR MINUTES. 1253 PM HEAVY RAIN ST CLOUD AIRPORT 45.54N 94.05W 09/03/2014 M2.70 INCH SHERBURNE MN ASOS ONE HOUR TOTAL...AWPAG RAIN GAUGE. 0.90 IN SIX MINUTES. 0101 PM HAIL MORRIS 45.59N 95.91W 09/03/2014 M0.75 INCH STEVENS MN LAW ENFORCEMENT 0113 PM HEAVY RAIN 1 W STARBUCK 45.61N 95.55W 09/03/2014 E0.00 INCH POPE MN PUBLIC STREET FLOODING IN STARBUCK. 0113 PM HAIL 1 W STARBUCK 45.61N 95.55W 09/03/2014 M0.50 INCH POPE MN PUBLIC 0145 PM FLOOD GLENWOOD 45.65N 95.38W 09/03/2014 POPE MN LAW ENFORCEMENT FLOODED ROADS IN THE CITY WITH OVER A FOOT OF WATER COVEING SOME ROADS, ESPECIALLY IMPACTING THE AREA NEAR THE FAIRGROUNDS. 0300 PM HAIL 1 E SWANVILLE 45.92N 94.62W 09/03/2014 M1.00 INCH MORRISON MN TRAINED SPOTTER GROUND WHITE. HAILED FIVE MINUTES. 0330 PM HAIL 2 NW PIERZ 46.00N 94.13W 09/03/2014 M1.00 INCH MORRISON MN LAW ENFORCEMENT REPORTED BY DEPUTY SHERIFF. 0332 PM HAIL PIERZ 45.98N 94.10W 09/03/2014 M1.00 INCH MORRISON MN PUBLIC 0405 PM HAIL 11 S ONAMIA 45.91N 93.67W 09/03/2014 M2.50 INCH MILLE LACS MN LAW ENFORCEMENT AT HIGHWAY 169 AND 250TH ST 0410 PM HAIL 3 SSE ONAMIA 46.03N 93.64W 09/03/2014 M1.00 INCH MILLE LACS MN PUBLIC GROUND WHITE. 0441 PM HEAVY RAIN LITTLE FALLS 45.98N 94.36W 09/03/2014 M2.15 INCH MORRISON MN CO-OP OBSERVER 0535 PM TSTM WND DMG MORA 45.88N 93.29W 09/03/2014 KANABEC MN LAW ENFORCEMENT LAGRE UPROOTED TREE DESTROYED A GARAGE. ANOTHER GARAGE SUSTAINDED TREE DAMAGE AS WELL. 0535 PM TSTM WND DMG MORA 45.88N 93.29W 09/03/2014 KANABEC MN AMATEUR RADIO NUMEROUS TREES AND POWER LINES DOWN 0537 PM HAIL 3 SSW MORA 45.83N 93.31W 09/03/2014 M0.75 INCH KANABEC MN TRAINED SPOTTER 0610 PM FLASH FLOOD LITTLE FALLS 45.98N 94.36W 09/03/2014 MORRISON MN CO-OP OBSERVER MANY STREETS IN TOWN ARE FLOODED. 0746 PM HEAVY RAIN ONAMIA 46.07N 93.67W 09/03/2014 M3.55 INCH MILLE LACS MN CO-OP OBSERVER 0752 PM TSTM WND DMG CUSHING 45.57N 92.65W 09/03/2014 POLK WI LAW ENFORCEMENT MULTIPLE TREES AND POWER LINES DOWN. 0805 PM TSTM WND DMG LUCK 45.58N 92.47W 09/03/2014 POLK WI LAW ENFORCEMENT NUMEROUS TREES AND POWER LINES DOWN 0835 PM TSTM WND DMG CUMBERLAND 45.54N 92.02W 09/03/2014 BARRON WI LAW ENFORCEMENT TREE DOWN. PRELIMINARY LOCAL STORM REPORT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 634 AM CDT THU SEP 04 2014 ..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON... ..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE.... ..REMARKS.. 0631 AM TSTM WND GST STAPLES 46.36N 94.80W 09/04/2014 M79.00 MPH TODD MN AWOS PRELIMINARY LOCAL STORM REPORT...SUMMARY NATIONAL WEATHER SERVICE DULUTH MN 111 PM CDT THU SEP 4 2014 ...TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON... ...DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE.... ..REMARKS.. 0905 AM NON-TSTM WND DMG SIREN 45.78N 92.38W 09/04/2014 BURNETT WI LAW ENFORCEMENT WAKE LOW WINDS CAUSING TREES/POWER LINES DAMAGE IN SIREN, WEBSTER, AND EAST OF HERTEL. REPORTED BY BURNETT COUNTY LAW ENFORCEMENT. 0905 AM HAIL 6 S STONE LAKE 45.76N 91.54W 09/04/2014 E0.50 INCH SAWYER WI TRAINED SPOTTER 0903 AM HAIL 1 SSW PARK FALLS 45.92N 90.45W 09/04/2014 E1.00 INCH PRICE WI TRAINED SPOTTER LOTS OF QUARTER SIZE HAIL. 0900 AM TSTM WND DMG 1 W PARK FALLS 45.93N 90.47W 09/04/2014 PRICE WI TRAINED SPOTTER 8 TO 10 INCH DIAMETER TREE BROKEN. DATE CORRECTED FROM APRIL 4 TO SEPTEMBER 4. 0900 AM TSTM WND DMG 1 W PARK FALLS 45.93N 90.46W 09/04/2014 PRICE WI TRAINED SPOTTER 8 TO 10 INCH DIAMETER TREE BROKEN. DATE CORRECTED FROM APRIL 4 TO SEPTEMBER 4. CORRECTED LOCATION. 0859 AM HAIL 1 W PARK FALLS 45.93N 90.46W 09/04/2014 E1.50 INCH PRICE WI TRAINED SPOTTER QUARTER SIZE HAIL INCREASING TO PING PONG BALL SIZE. STILL HAILING. 0852 AM TSTM WND DMG FIFIELD 45.88N 90.42W 09/04/2014 PRICE WI LAW ENFORCEMENT NUMEROUS TREES DOWN ACROSS TOWN. 0851 AM HAIL PARK FALLS 45.93N 90.45W 09/04/2014 E1.00 INCH PRICE WI TRAINED SPOTTER NICKEL TO QUARTER SIZE HAIL. 0846 AM HEAVY RAIN AITKIN 46.53N 93.71W 09/04/2014 M2.22 INCH AITKIN MN TRAINED SPOTTER RAIN FELL FROM 6 AM TO 715 AM. 0825 AM HAIL 2 SW RIVERSIDE 46.06N 92.28W 09/04/2014 M0.88 INCH BURNETT WI TRAINED SPOTTER 0803 AM HAIL 1 SE HINCKLEY 46.01N 92.93W 09/04/2014 M1.00 INCH PINE MN TRAINED SPOTTER PEA TO QUARTER SIZE HAIL. 0801 AM HAIL 2 E HAYWARD 46.01N 91.44W 09/04/2014 M1.00 INCH SAWYER WI TRAINED SPOTTER HAIL COVERING THE GROUND 0800 AM HAIL 1 E HAYWARD 46.01N 91.46W 09/04/2014 M1.00 INCH SAWYER WI TRAINED SPOTTER HAIL BEGINNING TO COVER THE GROUND 0759 AM TSTM WND GST 3 NNE LITTLE ROUND LAKE 46.00N 91.35W 09/04/2014 M62 MPH SAWYER WI TRAINED SPOTTER 0759 AM HAIL 3 NNE LITTLE ROUND LAKE 46.00N 91.35W 09/04/2014 M1.00 INCH SAWYER WI TRAINED SPOTTER 0745 AM HAIL 2 W HAYWARD 46.01N 91.53W 09/04/2014 M1.00 INCH SAWYER WI TRAINED SPOTTER 0740 AM HAIL 5 W HAYWARD 46.01N 91.58W 09/04/2014 E0.75 INCH WASHBURN WI TRAINED SPOTTER 0733 AM HAIL 1 W MINONG 46.10N 91.84W 09/04/2014 M1.25 INCH WASHBURN WI TRAINED SPOTTER HAIL DIAMETER 1.14 INCHES MEASURED WITH DIGITAL CALIPER. 0719 AM HEAVY RAIN BAXTER 46.34N 94.28W 09/04/2014 M2.50 INCH CROW WING MN TRAINED SPOTTER 0705 AM TSTM WND GST BRAINERD 46.35N 94.19W 09/04/2014 M69 MPH CROW WING MN TRAINED SPOTTER THE ANEMOMETER MEASURED WINDS AS HIGH AS 69 MPH. ROOF DAMAGE TO THE HOME OF THE SPOTTER. 0700 AM HAIL 6 WNW FINLAND 47.45N 91.37W 09/04/2014 M1.25 INCH LAKE MN TRAINED SPOTTER MOSTLY PEA SIZE HAIL WITH MANY NICKEL SIZED AND A FEW HALF DOLLAR SIZED. BETWEEN 0655AM-0705AM. 0700 AM TSTM WND DMG 1 W BRAINERD 46.35N 94.22W 09/04/2014 CROW WING MN UTILITY COMPANY BETWEEN BRAINERD AND BAXTER. 0700 AM TSTM WND DMG 3 W BRAINERD 46.36N 94.25W 09/04/2014 CROW WING MN TRAINED SPOTTER EIGHT 6-8 INCH DIAMETER TREES DOWN IN THE VICINITY OF FOREST DRIVE. 0700 AM HAIL 6 WNW FINLAYSON 46.24N 93.04W 09/04/2014 M1.25 INCH PINE MN TRAINED SPOTTER MOSTLY PEA SIZE HAIL WITH MANY NICKEL SIZED AND A FEW HALF DOLLAR SIZED. BETWEEN 0655AM-0705AM. 0653 AM HEAVY RAIN 2 NE AITKIN 46.55N 93.68W 09/04/2014 M1.78 INCH AITKIN MN AWOS AWOS STATION AITKIN AIRPORT /AIT/ HEAVY RAIN DURATION 1 HOUR. 0652 AM HEAVY RAIN 2 SW BREEZY POINT 46.58N 94.24W 09/04/2014 M1.26 INCH CROW WING MN MESONET MESONET STATION BREEZY POINT 2 SW /CW9381/ HEAVY RAIN DURATION 1 HOUR. 0652 AM TSTM WND DMG 4 WSW BRAINERD 46.34N 94.28W 09/04/2014 CROW WING MN TRAINED SPOTTER NUMEROUS TREES DOWN. 12 TO 14 INCH TREES SNAPPED OFF. AT LEAST ONE TREE UPROOTED. OTHER TREES DOWN IN NEIGHBORHOOD. 0647 AM HEAVY RAIN 2 SW BREEZY POINT 46.58N 94.24W 09/04/2014 M1.51 INCH CROW WING MN MESONET MESONET STATION BREEZY POINT 2 SW /CW9381/ HEAVY RAIN DURATION 6 HOURS. 0644 AM HEAVY RAIN 3 NE JENKINS 46.68N 94.29W 09/04/2014 M1.26 INCH CROW WING MN MESONET MESONET STATION JENKINS 3 ENE /CW8652/ HEAVY RAIN DURATION 6 HOURS. 0643 AM HEAVY RAIN 5 SSE BREEZY POINT 46.55N 94.17W 09/04/2014 M1.08 INCH CROW WING MN MESONET MESONET STATION BREEZY POINT 5 SE /DW6213/ HEAVY RAIN DURATION 1 HOUR. 0632 AM HEAVY RAIN 5 S NISSWA 46.42N 94.30W 09/04/2014 M0.82 INCH CROW WING MN MESONET MESONET STATION EAST GULL LAKE 2 ENE /DW5836/ HEAVY RAIN DURATION 1 HOUR. 0626 AM HAIL IRONTON 46.48N 94.00W 09/04/2014 E0.25 INCH CROW WING MN TRAINED SPOTTER 0610 AM HAIL BREEZY POINT 46.60N 94.22W 09/04/2014 E0.25 INCH CROW WING MN AMATEUR RADIO 0606 AM HEAVY RAIN 3 WNW WOODROW 46.40N 94.13W 09/04/2014 M1.00 INCH CROW WING MN MESONET MESONET STATION 3 W WOODROW /BIRM5/ HEAVY RAIN DURATION 6 HOURS. 0600 AM HEAVY RAIN EAST GULL LAKE 46.41N 94.35W 09/04/2014 M0.84 INCH CASS MN MESONET MESONET STATION EAST GULL LAKE /GLLM5/ HEAVY RAIN DURATION 6 HOURS. 0533 AM HAIL 7 NW BRAINERD 46.43N 94.30W 09/04/2014 E0.88 INCH CROW WING MN CO-OP OBSERVER 0530 AM HAIL 6 SE NISSWA 46.44N 94.21W 09/04/2014 E0.50 INCH CROW WING MN TRAINED SPOTTER