Storm Summary Number 1 for Middle Missouri Valley to Upper Midwest
Heavy Rain
NWS Weather Prediction Center College Park MD
1000 AM CDT Fri Jun 21 2024

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

Flash Flood and Flood Warnings are in effect across 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 AM CDT...A quasi-stationary boundary was draped over the
Midwest and Central Plains, with recent radar and surface
observations depicting scattered showers and isolated
thunderstorms extending from northern Nebraska to central
Wisconsin. Meanwhile, uniform southerly flow across the
Central/Southern Plains continued to transport efficient low-level
moisture towards the stationary front, with observed dew points in
the upper 60s in Nebraska and low 70s in Iowa. 

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

...IOWA...
LESTER 3 ESE                         5.45                    
GEORGE 5 SW                          5.02                    
LARCHWOOD 1.2 NNE                    4.43                    
ROCK RAPIDS 6 ENE                    4.27                    

...MINNESOTA...
ST. JAMES MUNI ARPT                  4.32                    
LUVERNE 3 WSW                        4.14                    
JACKSON MUNI ARPT                    4.04                    
FULDA 0.3 NNE                        4.00                    
HILLS 0.2 NNW                        4.00                    

...NEBRASKA...
ONEILL/BAKER FIELD                   5.45                    
AINSWORTH 3 S                        5.00                    
LONG PINE 6 SE                       4.20                    

...SOUTH DAKOTA...
CANTON 1 NNW                         7.75                    
WORTHING 2 W                         7.40                    
CHAMBERLAIN MUNI ARPT                7.07                    
HURLEY                               6.28                    
LENNOX 3 NE                          6.10                    
MITCHELL 1 SE                        5.79                    
OLIVET 3 SE                          5.74                    
SIOUX FALLS RGNL ARPT                5.25                    


Heavy rain and flash flooding remains a concern through tonight
across parts of the Upper Midwest as a developing low pressure
system progresses eastward from the central High Plains along a
draped stationary front. Numerous showers and thunderstorms
occurring over saturated soils from recent rainfall could
exacerbate flooding concerns from southeast South Dakota to
central Wisconsin. The heavy rain threat is forecast to end by
Saturday across the Midwest as the low pressure system enters the
Great Lakes on Saturday, with an attached cold front ushering in a
drier and more stable air mass.

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

Snell