Excessive Rainfall Possible This Weekend; October Heat Wave in California

A slow moving front will be the focus area for heavy to excessive rainfall and a threat for flash/urban flooding across the northern Gulf Coast and Southeast U.S. through this weekend. Abnormally hot, potentially record-breaking, temperatures will impact southern California and stretch north toward the Bay Area and Central Valley into next week. Read More >

Overview

Scattered strong to severe thunderstorms moved into the region Sunday afternoon, spreading eastwards into the evening hours. The event consisted mostly of Severe Thunderstorm Warnings for large hail and strong winds, but a couple tornado warnings were issued near Huron, SD.

Another round of thunderstorms occurred in the early morning hours on Monday, with the main threat with those storms being large hail.

The view of a thunderstorm near Plankinton, SD
Photo credit - Henry Cramer

Radar
Storm Reports
Rainfall

Radar


Radar loop from 4 pm through 10 pm Saturday	Radar loop from 10 pm Saturday through 4 am Sunday	Radar loop from 4 am through 10 am Sunday

Storm Reports


All of the Severe and Tornado warnings that were issued.	All of the local storm reports

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1128 AM CDT MON AUG 31 2020

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

0605 PM     HAIL             5 NE CHAMBERLAIN        43.86N 99.25W
08/30/2020  E1.00 INCH       BRULE              SD   PUBLIC



0625 PM     HAIL             12 SSW PUKWANA          43.62N 99.25W
08/30/2020  E0.70 INCH       BRULE              SD   PUBLIC

            DELAYED REPORT. PEA-DIME SIZED HAIL,
            DESCRIBED AS SOFT AS IT BROKE APART WHEN IT
            HIT THE CONCRETE.

0631 PM     HAIL             10 S PUKWANA            43.63N 99.16W
08/30/2020  E1.25 INCH       BRULE              SD   PUBLIC

            DELAYED REPORT. ONLY A HANDFUL OF HALF
            DOLLAR SIZED HAIL, NO STRONG WINDS.

0714 PM     HEAVY RAIN       2 SE WESSINGTON         44.43N 98.67W
08/30/2020  M0.96 INCH       BEADLE             SD   PUBLIC

            RAIN FELL IN 45 MINUTES.


0720 PM     TSTM WND GST     2 WNW VIRGIL            44.30N 98.46W
08/30/2020  E60 MPH          BEADLE             SD   TRAINED SPOTTER

            DELAYED REPORT. WINDS ESTIMATED TO 60 MPH,
            TIME ESTIMATED FROM RADAR.

0729 PM     HAIL             13 W WESSINGTON SPRINGS 44.05N 98.82W
08/30/2020  E1.25 INCH       JERAULD            SD   PUBLIC

            CORRECTS PREVIOUS HAIL REPORT FROM 13 W
            WESSINGTON SPRINGS.

0813 PM     HAIL             4 SE LANE               44.02N 98.37W
08/30/2020  E1.50 INCH       JERAULD            SD   PUBLIC

            DELAYED REPORT. MOSTLY QUARTER SIZED HAIL, A
            COUPLE THE SIZE OF A PING PONG BALL. NO
            STRONG WINDS AS IT WAS HAILING.

0856 PM     NON-TSTM WND GST 1 S KIMBALL             43.74N 98.96W
08/30/2020  M50 MPH          BRULE              SD   MESONET

            MESONET STATION 25 SD RWIS KIMBALL.

1101 PM     HAIL             IONA                    43.92N 95.78W
08/30/2020  M1.50 INCH       MURRAY             MN   PUBLIC



1106 PM     HAIL             3 SE SLAYTON            43.96N 95.70W
08/30/2020  E1.00 INCH       MURRAY             MN   PUBLIC

            DELAYED REPORT. DIME TO QUARTER SIZED HAIL,
            MOST OF THEM WERE THE SIZE OF A NICKEL. TIME
            ESTIMATED FROM RADAR.

0411 AM     HAIL             PONCA                   42.56N 96.71W
08/31/2020  E1.75 INCH       DIXON              NE   EMERGENCY MNGR

Rain Reports