Daily Weather Discussion

We will start with a little sunshine this morning but clouds will increase later today with showers and thunderstorms likely this afternoon and tonight.

Some storms could be strong to severe especially across south central and southeastern South Dakota. Large hail, strong straight-line wind gusts and even an isolated tornado will be possible. Right now the focal point for severe storms is along and south of I-90 with increasing potential close to and south of the South Dakota/Nebraska state line. I’ll be tweeting updates on the severe weather thought out the day. For the latest severe risk map, check out the tweets in the right hand column at KSFY.com.

An even bigger threat will be the potential for more heavy rain. Rainfall amounts of one to two or more inches will be possible across eastern South Dakota, southern Minnesota and northern Iowa through tomorrow morning. This includes places that were inundated with rain earlier this month. Keep an eye on the weather today, especially if you live in an area that is prone to flash flooding.

The rain will end tomorrow morning and then it will be smooth sailin’ through the weekend. The sun will be back on Thursday afternoon with sunshine and high temps in the low to mid 80s through the weekend. It will be a bit humid through the weekend, but with cooler than average temperatures the heat index won’t be a big issue. An isolated thunderstorm is possible late Sunday afternoon into Sunday night.

Hot, humid weather will continue today. A Heat Advisory is in effect for locations along and south of I-90 this afternoon into this evening. High temperatures will once again soar into the 90s with the heat index approaching 100 to 105 degrees.

A cold front will bring a chance of thunderstorms later today and tonight. A few storms could be severe with hail and strong straight-line wind gusts being the main threat. A bigger concern is the potential for heavy rain. There is a lot of moisture in the air today and storms that develop could produce heavy rainfall amounts of 1 to 2 inches or more. The National Weather Service has issued a Flash Flood Watch for parts of southeastern South Dakota, southwestern Minnesota and northwestern Iowa from this afternoon through Saturday morning.

Stay tuned for updates on the severe weather and heavy rain potential.

It is going to be a warm, humid and breezy day. High temps will range from the upper 80s in Sioux Falls to the low to mid 90s across central and northern South Dakota. The dew point will reach the 70s and that will crank the heat index into the upper 90s to near 100 degrees this afternoon. A Heat Advisory is in effect for places along and west of the James River this afternoon.

Thunderstorms will bring more heavy rain to portions of western, central and northeastern South Dakota later today and especially tonight. These storms will move a little faster than the storms that moved through last night, but heavy rainfall amounts of up to an inch or more will still be possible in some places. In addition to the rain threat, some storms could be severe. Large hail and damaging straight-line wind gusts will be the main threat.

The 4th of July will be another hot, humid day with scattered showers and thunderstorms possible tomorrow afternoon and tomorrow night. There will be scattered thunderstorms around fireworks time tomorrow night, especially in Sioux Falls and across the tri-state region. Storms will move in and out rather quickly, though. I’ll keep the fireworks forecast updates coming as we get closer to tomorrow evening.

The front responsible for storms today and tomorrow should push through by Thursday morning, leaving us with a slightly cooler, less humid, absolutely gorgeous weekend. Friday, Saturday and Sunday will bring plenty of sunshine with high temps ranging from the mid 80s to the low 90s.