Heavy Rain Over Southwest MN and Dakota County

Rainfall August 16-17, 2015
Courtesy: MNDNR State Climatology Office

 

The oppressive muggy air mass over Minnesota on August 16th, 2015 spawned thunderstorms with very heavy rains over two areas in southern Minnesota. One area was centered around Dundee in the northeast corner of Nobles County where the highest total found was 5.70 inches of rain six miles north of town. A second area of heavy rain was centered in the Bursville area of Dakota County. The highest total reported there so far was 5.29 inches in Burnsville.

The map to the right depicts the rainfall for the 24 hour period ending at around 8am August 17.

Below are National Weather Service Storm Reports of the event

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1108 AM CDT MON AUG 17 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0530 AM     HEAVY RAIN       3 NE BURNSVILLE         44.80N 93.24W
08/17/2015  M4.28 INCH       DAKOTA             MN   COCORAHS

            24 HOUR RAINFALL TOTAL.


PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1037 PM CDT SUN AUG 16 2015

...TIME...  ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
...DATE...  ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0900 AM     HEAVY RAIN       1 W DUNDEE              43.84N 95.49W
08/16/2015  E5.00 INCH       NOBLES             MN   PUBLIC



PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1040 PM CDT SUN AUG 16 2015

...TIME...  ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
...DATE...  ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0900 AM     HEAVY RAIN       HERON LAKE              43.80N 95.32W
08/16/2015  E3.50 INCH       JACKSON            MN   PUBLIC


PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1008 AM CDT SUN AUG 16 2015

...TIME...  ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
...DATE...  ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0850 AM     FLASH FLOOD      6 N DUNDEE              43.93N 95.46W
08/16/2015                   COTTONWOOD         MN   PUBLIC

            2 TO 3 FEET OF WATER RUNNING 20 FEET WIDE
            THROUGH PROPERTY.


PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
846 AM CDT SUN AUG 16 2015

...TIME...  ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
...DATE...  ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0840 AM     HEAVY RAIN       6 N DUNDEE              43.93N 95.46W
08/16/2015  E5.70 INCH       COTTONWOOD         MN   TRAINED SPOTTER