Storm Summary Number 2 for Middle Missouri Valley to Upper Midwest
Heavy Rain
NWS Weather Prediction Center College Park MD
1000 PM CDT Fri Jun 21 2024

...Additional rounds of heavy rain likely from the
Northern/Central Plains to the Upper Midwest through Saturday
morning...

Flash Flood and Flood Warnings are in effect across northern
Nebraska, southeast South Dakota, southwest Minnesota, and
northwest Iowa.

Flood Watches are in effect from northern Nebraska and southeast
South Dakota to southern Wisconsin.

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

At 900 PM CDT...A quasi-stationary front remains draped over the
Midwest and Central Plains this evening with Doppler Radar and
surface observations depicting numerous thunderstorms that stretch
from southern Nebraska on east to central Wisconsin. Prolonged
southerly flow across the Central/Southern Plains continues to
transport copious amounts of low-level moisture both towards and
along the stationary front with observed dew points in the low-mid
70s from the Middle Missouri Valley on east to eastern Iowa.

...Selected preliminary Storm Total Rainfall in inches from 700 AM
CDT Wed Jun 19 through 900 PM CDT Fri Jun 21...

...IOWA...
ROCK RAPIDS 1 N                      5.92                    
LESTER 3 ESE                         5.45                    
GEORGE 5 SW                          5.02                    
LARCHWOOD 1.2 NNE                    4.43                    

...MINNESOTA...
ST. JAMES MUNI ARPT                  6.21                    
JACKSON MUNI ARPT                    4.73                    
LUVERNE 3 WSW                        4.14                    
FULDA 0.3 NNE                        4.00                    
HILLS 0.2 NNW                        4.00                    
WORTHINGTON MUNI ARPT                3.96                    

...NEBRASKA...
ONEILL/BAKER FIELD                   7.01                    
LONG PINE 1 S                        6.35                    
AINSWORTH 3 S                        5.00                    
LONG PINE 6 SE                       4.20                    
BASSETT                              3.40                    

...SOUTH DAKOTA...
CANTON 1 NNW                         7.75                    
MITCHELL MUNI ARPT                   7.45                    
WORTHING 2 W                         7.40                    
CHAMBERLAIN MUNI ARPT                7.15                    
HURLEY                               6.28                    
LENNOX 3 NE                          6.10                    
SIOUX FALLS RGNL ARPT                5.82                    
MITCHELL 1 SE                        5.79                    
OLIVET 3 SE                          5.74                    

...WISCONSIN...
BARABOO                              2.76                    
MADISON DANE CNTY RGNL ARPT          1.98                    


Additional heavy rainfall and flash flooding is expected tonight
across parts of the Upper Midwest as low pressure along the draped
stationary front makes its way east. Widespread showers and
thunderstorms producing torrential rainfall rates up to 2-3 inches
per hour over saturated soils from recent rainfall will exacerbate
flooding concerns from southeast South Dakota to central
Wisconsin. The heavy rain threat is forecast to end by Saturday
morning across Nebraska and South Dakota as a passing cold front
ushers in a drier and more stable air mass. However, heavy showers
and strong thunderstorms will remain in the forecast during the
day Saturday across Minnesota, Iowa, and Wisconsin as rich low
level moisture continues to be directed at the frontal boundary
positioned over parts of the Midwest. The heavy rainfall threat
will finally conclude once the same cold front that tracked across
Nebraska and South Dakota makes its way through the Midwest
Saturday evening.

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