Dangerous Heat and Flash Flooding Ahead

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There are a couple of weather concerns for Central Iowa on your Thursday. It’s a combination of heat, humidity and heavy rain that will lead to some weather problems in parts of the state. A Heat Advisory is in effect across Southern Iowa through 8 PM tonight. A Flash Flood Watch is in effect through 7 AM on Friday.

We have a very moist atmosphere with high dew points in the low to mid 70s. This gives the outdoors a very tropical feeling. It will feel more uncomfortable as the heat builds today reaching the mid 80s to low 90s this afternoon and heat index values will go just above 100.

There is also a cold front dropping into the state from the northwest. We’re already seeing strong storms with heavy rain and gusty rains in the northern part of the state this morning. There will be a lull in the storminess through mid-day with partly sunny skies. More isolated storms will begin to pop up later this afternoon in mainly northern Iowa. Those storms will slowly slide south into Central Iowa by 10 PM and rains will continue to fall heavy through mid-night. Flash flooding could occur with these storms as the downpours will be heavy and linger. The rain will be out of Central Iowa and into southeast Iowa by 4 AM on Friday morning.

Rainfall totals look to range mainly between 1 to 2″, but a few localized areas could see more than 2″.

A few light showers may linger early Friday morning and then clouds will clear out through the day with skies turning partly sunny. Temperatures will be lower in the mid 80s on Friday afternoon. The humidity will begin to drop. The weekend looks to be dry and sunny with day time highs in the mid 80s.