Weather Alert Day: Heat is becoming dangerous as we reach higher humidity

The ABC 17 Stormtrack Weather Team has issued a Weather Alert Day for Thursday through Saturday, as recently observed heat indexes in Mid-Missouri have reached dangerous thresholds, and we expect that to continue through the first half of the weekend.

The upper-level ridge, or "heat dome," is persistent and continues to drive the same heat across Mid-Missouri. As it shifts west, northerly flow wrapping around it may send us a slight cool down in the way of a weak cold front or showers and storms. While a cooldown into the low 90s is forecast, no rain is currently expected.

As humidity has increased in the past two days, it is more likely that we will reach our Weather Alert Day criteria, which is a 105-degree heat index. This will come during the peak heating hours of the afternoon. We've generally been dealing with dew points in the 60s, but high 60s and 70s increase our chances of hitting the 105 mark.

Remember to stay hydrated with plenty of water and electrolyte drinks if you do have to spend longer periods of time outside. In these conditions, all age groups can experience heat-related illnesses and heat exhaustion. Take breaks indoors and make sure your pets have a cool place to rest, along with plenty of water. Limit their walks to around dawn or dusk to keep them safe in these conditions.