A cold front pushed into eastern Minnesota in the early morning hours of July 11th. Severe thunderstorms along the cold front knocked down trees near Kellogg (Wabasha County) and caused power outages near Mazeppa (Wabasha County).
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS ARX wrote it up.
A cold front pushed into eastern Minnesota in the early morning hours of July 11th. Severe thunderstorms along the cold front knocked down trees near Kellogg (Wabasha County) and caused power outages near Mazeppa (Wabasha County).
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS La Crosse, WI wrote its last area forecast discussion before the first event at Jul 10, 8:24 PM CST, 2 hours 58 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LA CROSSE WI 924 PM CDT SUN JUL 10 2011 .UPDATED... LINE OF SEVERE CONVECTION CURRENTLY TRACKING THROUGH CENTRAL MINNESOTA. AT THE CURRENT TIME...DISTANCE/SPEED TOOL INDICATES THIS LINE APPROACHING THE FAR WESTERN COUNTIES BETWEEN 11 PM AND MIDNIGHT. THIS LINE HAS BEEN PRODUCING DAMAGING WIND GUSTS ALONG WITH ISOLATED TORNADOES AS FAVORABLE SOUTHEAST WINDS FEEDING INTO THE LINE. THE 00Z KMPX SOUNDING SHOWED NEARLY 1700 J/KG OF MIXED LAYER CAPE ALONG WITH 45 KNOTS OF DEEP SHEAR SHEAR. THE SOUNDING ALSO SHOWS A RELATIVELY DRY 850MB-500MB LAYER. 00Z RUC SHOWING MODEST MOISTURE TRANSPORT INTO THE LINE. VARIOUS MESO-MODELS CONTINUE TO SHOW CONVECTION TO TRACK THROUGH THE FORECAST AREA OVERNIGHT. ALTHOUGH THE 23Z HRRR SHOWS THE LINE COMING THROUGH THE FORECAST AREA...IT HAS IT ON A WEAKENING TREND. STILL EXPECT IT TO PACK A PUNCH AS IT SWEEPS THROUGH THE AREA OVERNIGHT WITH THE MAIN THREAT FOR THE FORECAST AREA BEING MAINLY WIND AND POSSIBLY HAIL. IF STORMS CONTINUE THEIR CURRENT INTENSITY WOULD NOT BE SURPRISED TO SEE A WATCH IN THE NEXT SEVERAL HOURS. && .ARX WATCHES/WARNINGS/ADVISORIES... WI...NONE. MN...NONE. IA...NONE. && RABERDING
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LA CROSSE WI 159 PM CDT SUN JUL 10 2011 IAZ008>011-018-019-029-030-MNZ079-086>088-094>096-WIZ017-029-032>034- 041>044-053>055-061-111200- ADAMS-ALLAMAKEE-BUFFALO-CHICKASAW-CLARK-CLAYTON-CRAWFORD-DODGE- FAYETTE-FILLMORE-FLOYD-GRANT-HOUSTON-HOWARD-JACKSON-JUNEAU-LA CROSSE- MITCHELL-MONROE-MOWER-OLMSTED-RICHLAND-TAYLOR-TREMPEALEAU-VERNON- WABASHA-WINNESHIEK-WINONA- 159 PM CDT SUN JUL 10 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PARTS OF NORTHEAST IOWA... SOUTHEAST MINNESOTA...AND SOUTHWEST INTO CENTRAL WISCONSIN. .DAY ONE...TONIGHT THUNDERSTORMS ARE EXPECTED TO DEVELOP INTO NORTHEAST SOUTH DAKOTA AND SOUTHEAST NORTH DAKOTA BY EARLY THIS EVENING. THESE THUNDERSTORMS ARE THEN EXPECTED TO ORGANIZE INTO A LINE AND MOVE EAST AND SOUTHEAST ACROSS MINNESOTA AND WISCONSIN TONIGHT...REACHING THE AREA DURING THE LATER EVENING AND OVERNIGHT HOURS. SOME OF THESE STORMS MAY BE STRONG TO SEVERE. DAMAGING WINDS...HEAVY DOWNPOURS AND FREQUENT LIGHTENING ARE EXPECTED TO BE THE MAIN THREATS. THE MAIN THREAT TIME APPEARS TO BE BETWEEN 9 PM AND 4 AM. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY SCATTERED THUNDERSTORMS ARE EXPECTED MONDAY AS A COLD FRONT MOVES SOUTH ACROSS THE AREA. THERE IS A CONTINUED POTENTIAL FOR SEVERE STORMS...MAINLY SOUTH OF INTERSTATE 90. DAMAGING WINDS AND HEAVY RAIN WOULD BE THE MAIN THREATS. ALSO...PLAN ON HEAT INDICES OF 95 TO 100 MAINLY SOUTH OF INTERSTATE 90 ON MONDAY. PERIODIC THUNDERSTORM CHANCES CONTINUE TUESDAY THROUGH SATURDAY... WITH A BREAK LIKELY WEDNESDAY INTO WEDNESDAY NIGHT. THERE MAY BE A RISK OF SEVERE WEATHER WITH A FEW OF THE STORMS THURSDAY AFTERNOON AND EVENING AS A WARM FRONT LIFTS NORTH ACROSS THE REGION. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED TONIGHT...ROUGHLY BETWEEN THE HOURS OF 9 PM AND 4 AM. SPOTTER ACTIVATION MAY BE NEEDED AGAIN MONDAY AFTERNOON...MAINLY SOUTH OF INTERSTATE 90. .EMERGENCY MANAGEMENT COORDINATION... NO WEBINAR IS SCHEDULED. RRS/AJ
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LA CROSSE WI 1034 PM CDT SUN JUL 10 2011 MNZ079-086-087-094-110500- DODGE-MOWER-OLMSTED-WABASHA- 1034 PM CDT SUN JUL 10 2011 ...STRONG TO SEVERE THUNDERSTORMS EXPECTED TO MOVE INTO THE AREA... A LINE OF STRONG TO SEVERE THUNDERSTORMS WILL MOE INTO THE AREA BETWEEN 11 PM AND MIDNIGHT. BY 1130 PM...THE LINE IS EXPECTED TO EXTEND FROM NEAR RED WIND MINNESOTA...TO DODGE CENTER...TO ALBERT LEA. THE MAIN THREAT WITH THESE STORMS WILL BE DAMAGING WINDS IN EXCESS OF 60 MPH ALONG WITH LARGE HAIL. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 500 AM MONDAY MORNING FOR NORTHEASTERN IOWA AND SOUTHEAST MINNESOTA AND WEST CENTRAL WISCONSIN. RABERDING
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LA CROSSE WI 1147 PM CDT SUN JUL 10 2011 MNZ079-087-088-094-095-WIZ032-110545- BUFFALO-FILLMORE-MOWER-OLMSTED-WABASHA-WINONA- 1147 PM CDT SUN JUL 10 2011 ...STRONG TO SEVERE THUNDERSTORMS LIKELY AFTER MIDNIGHT... AT 1142 PM...DOPPLER RADAR INDICATED STRONG TO SEVERE THUNDERSTORMS FROM NEAR RED WING MINNESOTA...TO ALBERT LEA MINNESOTA...MOVING EAST AT 45 MPH. SEVERE WEATHER HAS BEEN REPORTED WITH THESE STORMS WITH WIND GUSTS IN EXCESS OF 60 MPH. WARNINGS MAY BE NEEDED AS THESE STORMS GET CLOSER THIS LINE OF STORMS IS EXPECTED TO EXTEND FROM NEAR MONDOVI WISCONSIN...TO SPRING VALLEY MINNESOTA BY 1245 AM. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 500 AM MONDAY MORNING FOR NORTHEASTERN IOWA AND SOUTHEAST MINNESOTA AND WEST CENTRAL WISCONSIN. RABERDING
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LA CROSSE WI
1201 AM CDT MON JUL 11 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1158 PM TSTM WND GST WEST CONCORD 44.15N 92.90W
07/10/2011 M80 MPH DODGE MN TRAINED SPOTTER
WIND GUSTS MEASURED 80 TO 100 MPH.
&&
04The Minneapolis radar (KMPX), 103 km away, was scanning. The volume nearest the first event began at 05:23 UTC.
2 thunderstorm wind. Local standard time, as filed.
High winds from thunderstorms knocked down power lines and caused power outages around Mazeppa.
Trees were blown down along U.S. Highway 61 north of Kellogg.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Minnesota in 2011Every state in 2011This day in weather historyWarnings in Minnesota, July 2011
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 323241, 323242.