Ripe. NWS Doppler at 1:55 PM shows strengthening storms over southwest Minnesota and eastern South Dakota, some capable of 1" hail. These storms should continue to intensify into a possible MCS (meso-convective system) or even a derecho later today; isolated supercells over far southern Minnesota most likely to spin up tornadoes. Here's more on the Flash Flood Warning over southwestern Minnesota:
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1231 PM CDT MON JUN 16 2014
THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
EASTERN BROOKINGS COUNTY IN EAST CENTRAL SOUTH DAKOTA
EASTERN MINNEHAHA COUNTY IN SOUTHEAST SOUTH DAKOTA
EASTERN MOODY COUNTY IN EAST CENTRAL SOUTH DAKOTA
LINCOLN COUNTY IN SOUTHWEST MINNESOTA
LYON COUNTY IN SOUTHWEST MINNESOTA
MURRAY COUNTY IN SOUTHWEST MINNESOTA
NOBLES COUNTY IN SOUTHWEST MINNESOTA
PIPESTONE COUNTY IN SOUTHWEST MINNESOTA
ROCK COUNTY IN SOUTHWEST MINNESOTA
* UNTIL 630 PM CDT
* AT 1224 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR
INDICATED THUNDERSTORMS WITH VERY HEAVY RAINFALL WERE MOVING INTO
THE WARNED AREA. AVERAGE RAINFALL TOTALS ARE EXPECTED TO BE AROUND
1 INCH...BUT LOCALLY HEAVIER AMOUNTS OF 2 TO 4 INCHES ARE POSSIBLE
THROUGH THIS AFTERNOON. THESE RAINS WILL BE FALLING ON ALREADY
SATURATED GROUND FROM THE HEAVY RAINS THIS PAST WEEKEND...SO RAPID
RISES ON AREA CREEKS AND STREAMS WILL OCCUR WITH THE RUNOFF FROM
THESE RAINS. ALSO...INTENSE RAINFALL RATES OF 0.5 TO 1.0 INCH IN
20 TO 30 MINUTES ARE ALSO POSSIBLE LEADING TO RAPID FLOODING OF
STREETS AND URBAN AREAS.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
ARCO...BALATON...BEAVER CREEK...BLUE MOUNDS STATE PARK...CAMDEN
STATE PARK...CHANDLER...COTTONWOOD...CURRENT LAKE...CURRIE...
IVANHOE...JASPER AND LAKE BENTON.
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.
FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD RELATED DEATHS OCCUR
IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS WATER COVERED BRIDGES...
DIPS...OR LOW WATER CROSSINGS. NEVER TRY TO CROSS A FLOWING STREAM...
EVEN A SMALL ONE...ON FOOT OR IN A VEHICLE.