Storm Summary Number 4 for Middle Missouri Valley to Upper Midwest
Heavy Rain
NWS Weather Prediction Center College Park MD
1000 PM CDT Sat Jun 22 2024

...Additional rounds of heavy rain likely across the Upper Midwest
and Great Lakes through tonight...

Flash Flood and Flood Warnings are in effect across parts of
Nebraska, South Dakota, Iowa, Minnesota, and Wisconsin.

Flood Watches are in effect across portions of southern Wisconsin
and northern Michigan.

For a detailed graphical depiction of the latest watches, warnings
and advisories, please see www.weather.gov

At 900 PM CDT...A squall line racing out ahead of an approaching
cold front contained strong-to-severe thunderstorms capable of
producing damaging winds, large hail, and tornadoes along the
WI/IL border. Meanwhile, the aforementioned cold front was
tracking east while generating numerous heavy showers and
thunderstorms from northern IL and eastern IA to as far south as
northern MO. Surface observations showed winds out ahead of the
cold front out of the southeast and advecting rich low level
moisture along the front. Dew points in northern MO and northern
IL were anywhere from the upper 60s to the low 70s.

...Selected preliminary Storm Total Rainfall in inches from 700 AM
CDT Wed Jun 19 through 900 PM CDT Sat Jun 22...

...IOWA...
ROCK RAPIDS 5 SSW                   11.52                    
LESTER 2 S                           9.49                    
LARCHWOOD 1.2 NNE                    9.34                    
LAKE PARK 0.2 N                      8.98                    
SHELDON                              7.22                    
BRITT 8.2 NNW                        6.03                    
ESTHERVILLE MUNI ARPT                5.11                    
GEORGE 5 SW                          5.02                    

...WISCONSIN...
BARABOO                              5.72                    
MADISON DANE CNTY RGNL ARPT          3.89                    
MANITOWOC CNTY ARPT                  3.77                    
COCHRANE 4.2 NE                      3.67                    
TREMPEALEAU 1.8 NW                   3.54                    
FOND DU LOC CNTY ARPT                3.27                    
LA CROSSE RGNL ARPT                  1.37                    

...Selected preliminary Storm Total Rainfall in inches where the
event has ended...

...MINNESOTA...
ST. JAMES MUNI ARPT                  8.52                    
MOUNTAIN LAKE                        8.44                    
LISMORE 3 SSW                        8.18                    
MANKATO 3.4 SSW                      7.68                    
ROCK CREEK NEAR LUVERNE              7.46                    
JACKSON MUNI ARPT                    6.63                    
WEST FORK DES MOINES RIVER           6.50                    
MIDDLE BRANCH ROOT RIVER             5.85                    
WORTHINGTON MUNI ARPT                5.05                    
ROCHESTER INTL AIRPORT               4.59                    

...NEBRASKA...
O'NEIL                               7.02                    
PALMER 9.2 NE                        6.49                    
LONG PINE 1 S                        6.35                    
COLUMBUS 5.9 SW                      5.63                    

...SOUTH DAKOTA...
WORTHING 4 SW                       17.83                    
CANTON 1.2 W                        13.43                    
DAVIS                               11.99                    
LENNOX 3.3 NE                       10.08                    
MITCHELL                             8.59                    
SIOUX FALLS RGNL ARPT                7.53                    
CHAMBERLAIN MUNI ARPT                7.24                    
HURLEY                               6.28                    
OLIVET 3 SE                          5.74                    


As the cold front pick up steam and tracks faster to the east
tonight, so will the ongoing cluster of thunderstorms as they race
through the Middle Mississippi Valley and Great Lakes overnight.
Additional heavy rainfall will occur from eastern IA and northern
IL to central MI overnight. By Sunday morning, the storms will
already have made their way into the Lower Great Lakes and Ohio
Valley where they will maintain their progressive movement east
throughout the day. With drier and more stable air finally
engulfing much of the Midwest thanks to the arrival of high
pressure from the west, more tranquil weather conditions will
support ongoing clean up efforts throughout the region. However,
river flooding across portions of the Midwest is expected to
persist into the upcoming week.

The next Storm Summary will be issued by the Weather Prediction
Center at 1000 AM CDT. Please refer to your local National Weather
Service office for additional information on this event.

Mullinax