Wednesday forecast for Austin: A heat advisory will be in effect from 1 p.m. to 7 p.m. Wednesday across the Austin metro area, the National Weather Service says.
According to the weather service, forecasters issue a heat advisory when the maximum heat index value is expected to be 100 degrees or higher for at least two days and nighttime temperatures won’t drop below 75 degrees.
The heat advisories are typically issued within 12 hours of dangerously hot conditions to help residents avoid heat-related illnesses. The weather service issued the latest advisory just after 3 a.m. Wednesday.
For those of you just joining us for Austin’s swelter of 2016, the heat index measures air temperatures and humidity levels to get a more accurate sense of how the heat will affect the human body. So even though the forecasted peak air temperature Wednesday is 99 degrees, the additional humidity will make it “feel like” 106 degrees outside.
On Wednesday, heat index values are expected to climb to between 105 and 110 degrees across parts of Central Texas along and east of the Interstate 35 corridor. At night, clouds will increase as south-southeast winds of 10 to 15 mph continue to bring in moisture from the Gulf.
Heat index values are expected to reach similar triple-digit temperatures in the region on Thursday and Friday, which may result in additional heat advisories being issued.
Meanwhile, the weather service forecast rest of the work week calls for continued heat and sunshine:
- Thursday’s outlook calls for mostly sunny skies and a high near 99. Heat index values could peak at 107. At night, forecasters expect increased cloudiness and a low around 77 as south-southeast winds of 10 to 15 mph persist.
- Friday should be mostly sunny and hot again, with a high near 98. Skies at night should be mostly clear, with temperatures no cooler than 78 and more winds from the south-southeast delivering humid, tropical air.
- Forecasters say Saturday will look a lot like previous days, mostly sunny and hot with a high near 98. Partly cloudy skies are expected at night, with a low around 78.
- Sunday also should be mostly sunny and hot, with a high near 98, the weather service says. South winds of 5 to 15 mph could include gusts as high as 20 mph.
Because heat illnesses are possible on Wednesday and could develop quickly, the weather service offer these tips:
- Drink plenty of fluids
- Stay out of the sun
- If you have to work or spend time outside, reschedule strenuous activities for the morning or evening when temperatures are coolest
- Wear lightweight or loose-fitting clothing when possible
- Watch out for signs of heat exhaustion or heat stroke, such as dizziness, nausea or a rapid pulse