Severe thunderstorms associated with warm frontal boundary.
Every event with a place to put it. Tap one for its entry below.
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 MPX wrote it up.
Severe thunderstorms associated with warm frontal boundary.
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 Twin Cities, MN wrote its last area forecast discussion before the first event at Aug 11, 2:20 AM CST, 37 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 320 AM CDT SAT AUG 11 2007 .DISCUSSION... ABBREVIATED DISCUSSION TONIGHT DUE TO ONGOING SEVERE WEATHER. MADE SOME ADJUSTMENTS TO FORECAST FOR SUNDAY TO INDICATE LOWER DEWPOINTS WITH HIGH PRESSURE PASSING TO THE NORTH AND BRINGING NORTHERLY WINDS. SOUTHERLY FLOW RETURNS TO THE WESTERN CWA SUNDAY NIGHT. THERE ARE INDICATIONS OF A SMALL BAND OF FRONTOGENESIS SETTING UP ACROSS THE SOUTHWEST CWA SUNDAY NIGHT AS WARM ADVECTION PASSES OVER THE AREA. HAVE CONTINUED WITH SMALL POPS IN THE SOUTH AND SOUTHWEST. SOUTH WINDS INCREASE MONDAY AND HAVE RAISED TEMPS A FEW DEGREES...ESPECIALLY ACROSS THE SOUTHWEST MINNESOTA WHERE DOWNSLOPE AFFECTS MAY RULE. LOW PRESSURE WILL APPROACH FROM THE WEST MONDAY NIGHT BRINGING A TROUGH THROUGH THE AREA AND BRING ANOTHER CHANCE FOR PRECIPITATION...ESPECIALLY ACROSS THE EASTERN HALF OF THE CWA. && .AVIATION.../06Z TAF CYCLE/ PRESENT MODELS TREND DAKOTAS ACTIVITY NORTHEAST ACROSS MAINLY THE AXN/STC TAF AREAS THROUGH 12Z SAT. WILL MENTION VCNTY THUNDER AT MSP FOR NOW...AS MOST OF COMPLEX LIFTS TO THE NORTH. HARD TO DECIPHER TREND OF MODELS AFTER THAT...WITH CONVECTIVE FEEDBACK ISSUES...ALTHOUGH SURFACE FRONT APPEARS TO MOVE THROUGH ESATERN MN AFTER 22Z OR SO. WILL HOLD ONTO PROBS FOR SAT AFTERNOON IN MSP/RNH AND THUNDER AT EAU LATE AFTERNOON /EARLY EVENING AS FORNT MOVES THROUGH. && .MPX WATCHES/WARNINGS/ADVISORIES... MN...NONE. WI...NONE. &&
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 407 PM CDT FRI AUG 10 2007 MNZ041>045-047>070-073>078-082>085-091>093-WIZ014>016-023>028- 111100- DOUGLAS-TODD-MORRISON-MILLE LACS-KANABEC-STEVENS-POPE-STEARNS- BENTON-SHERBURNE-ISANTI-CHISAGO-LAC QUI PARLE-SWIFT-CHIPPEWA- KANDIYOHI-MEEKER-WRIGHT-HENNEPIN-ANOKA-RAMSEY-WASHINGTON- YELLOW MEDICINE-RENVILLE-MCLEOD-SIBLEY-CARVER-SCOTT-DAKOTA- REDWOOD-BROWN-NICOLLET-LE SUEUR-RICE-GOODHUE-WATONWAN-BLUE EARTH- WASECA-STEELE-MARTIN-FARIBAULT-FREEBORN-POLK-BARRON-RUSK- ST. CROIX-PIERCE-DUNN-PEPIN-EAU CLAIRE- 407 PM CDT FRI AUG 10 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL AND SOUTH CENTRAL MINNESOTA...AND WEST CENTRAL WISCONSIN. .DAY ONE...TONIGHT THUNDERSTORM CHANCES WILL INCREASE LATER TONIGHT OVER MUCH OF CENTRAL AND SOUTH CENTRAL MINNESOTA. THE SEVERE WEATHER THREAT IS SOMEWHAT DIMINISHED AS THE MOST SIGNIFICANT STORMS WILL REMAIN IN THE DAKOTAS. HOWEVER...THUNDERSTORMS WITH LARGE HAIL AND STRONG WINDS WILL BE POSSIBLE OVER PARTS OF CENTRAL MINNESOTA AFTER MIDNIGHT. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY A RATHER ACTIVE PERIOD IS ANTICIPATED WITH SEVERE THUNDERSTORMS POSSIBLE SATURDAY AFTERNOON AND EVENING TO THE EAST OF A LINE FROM MORA THROUGH MANKATO. SEVERE THUNDERSTORM RISK ON SATURDAY WOULD INCLUDE THE TWIN CITIES...OWATONNA AND RED WING ALONG WITH RICE LAKE... CHIPPEWA FALLS...BALDWIN AND EAU CLAIRE WISCONSIN. AN ACTIVE PERIOD OF THUNDERSTORMS CAN BE ANTICIPATED FOR MUCH OF SOUTH CENTRAL AND CENTRAL MINNESOTA ALONG WITH PART OF WESTERN WISCONSIN OVER THE PERIOD FROM MONDAY THROUGH THURSDAY. WITH THE PASSAGE OF CLUSTERS OF THUNDERSTORMS OR MESOSCALE CONVECTIVE SYSTEMS AS THEY ARE TERMED...TYPICAL SEVERE THUNDERSTORM RISK MOST OFTEN IS FROM 60 TO 75 MPH STRAIGHT-LINE WIND DAMAGE ON THE LEADING EDGE OF SQUALL LINES. THE LATE AFTERNOON AND EARLY EVENING HOURS FREQUENTLY YIELD THE GREATEST FREQUENCY OF SURFACE WIND DAMAGE REPORTS. .SPOTTER INFORMATION STATEMENT... SKYWARN SPOTTER ACTIVATION WILL BE NEEDED FREQUENTLY OVER THE NEXT 5 TO 7 DAYS. JPR
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 313 AM CDT SAT AUG 11 2007 MNZ069-070-110915- DAKOTA-SCOTT- 313 AM CDT SAT AUG 11 2007 ...SIGNIFICANT WEATHER ALERT FOR DAKOTA AND SCOTT COUNTIES UNTIL 415 AM CDT... AT 310 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM CHASKA TO BELLE PLAINE...AND MOVING EAST AT 40 MPH. WINDS AROUND 50 MPH ARE EXPECTED WITH THESE STORMS. LOCATIONS THAT MAY BE AFFECTED INCLUDE SHAKOPEE...SAVAGE... ROSEMOUNT...PRIOR LAKE...LAKEVILLE...FARMINGTON...BURNSVILLE AND APPLE VALLEY. PEOPLE IN CENTRAL DAKOTA AND SCOTT COUNTIES...INCLUDING THE CITIES OF SHAKOPEE...PRIOR LAKE...SAVAGE...BURNSVILLE...APPLE VALLEY... LAKEVILLE...FARMINGTON AND ROSEMOUNT...SHOULD MONITOR THE WEATHER SITUATION CLOSELY. LISTEN FOR POSSIBLE WARNINGS AND BE PREPARED TO TAKE APPROPRIATE ACTION SHOULD SEVERE WEATHER THREATEN.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
324 AM CDT SAT AUG 11 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0320 AM TSTM WND GST EDEN PRAIRIE 44.85N 93.46W
08/11/2007 M0 MPH HENNEPIN MN ASOS
61 KNOT GUST AT FLYING CLOUD AIRPORT.
&&
KATPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
333 AM CDT SAT AUG 11 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0314 AM FLASH FLOOD MONTICELLO 45.30N 93.80W
08/11/2007 WRIGHT MN AMATEUR RADIO
22 INCHES OF STANDING WATER IN MONTICELLO.
&&
KATPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
336 AM CDT SAT AUG 11 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0335 AM TSTM WND DMG MINNEAPOLIS 44.96N 93.27W
08/11/2007 HENNEPIN MN TRAINED SPOTTER
TREE DOWN ON A HOUSE. SOUTHERN PART OF MINNEAPOLIS.
&&
KATPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
337 AM CDT SAT AUG 11 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0332 AM TSTM WND GST MINNEAPOLIS 44.96N 93.27W
08/11/2007 M58 MPH HENNEPIN MN ASOS
AT MINNEAPOLIS/ST. PAUL INTERNATIONAL AIRPORT.
&&
KATPRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
341 AM CDT SAT AUG 11 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0320 AM TSTM WND GST EDEN PRAIRIE 44.85N 93.46W
08/11/2007 M70.00 MPH HENNEPIN MN ASOS
61 KNOT GUST AT FLYING CLOUD AIRPORT.
&&
KMEThe Minneapolis radar (KMPX), 64 km away, was scanning. The volume nearest the first event began at 08:56 UTC.
2 thunderstorm wind, 1 hail, 1 lightning. Local standard time, as filed.
Many trees reported felled or large tree limbs severed across Hudson.|One example was the severing in half of one large tree in front of the Croix View apartments. Some streets were nearly impassable. Information provided by Emergency Management and the Hudson Star-Observer.
Residential home windows blown out. Power line down.
Observed at sheriffs office.
Lightning struck a home, which burned. The home was determined to be a near total loss.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wisconsin in 2007Every state in 2007This day in weather historyWarnings in Wisconsin, August 2007
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: 53027, 53028, 53025, 70781.