Heat wave: What you should know

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Rhode Island has officially reached heat-wave status.

Highs over the weekend at T.F. Green International Airport reached 91 degrees and 94 degrees, respectively. Temperatures on Monday reached 93 degrees, making it three consecutive days of 90+ degree weather.

The state has a chance of making it a four-day heat wave on Tuesday, with highs expected to be close to 90 degrees.

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The above graphic explains the differences between heat exhaustion and heat stroke.

Heat exhaustion requires a time to cool-down but is typically manageable by simply getting out of the heat, into a cooler place and drinking water. Heat stroke requires immediate help by emergency personnel. In both cases, moving into a cooler place is key.

List of designated cooling centers in R.I. »

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The differences between a Heat Advisory, Excessive Heat Watch and Excessive Heat Warning
  • Excessive Heat Warning — Take Action! An Excessive Heat Warning is issued within 12 hours of the onset of extremely dangerous heat conditions. The general rule of thumb for this Warning is when the maximum heat index temperature is expected to be 105° or higher for at least 2 days and night time air temperatures will not drop below 75°; however, these criteria vary across the country, especially for areas not used to extreme heat conditions. If you don’t take precautions immediately when conditions are extreme, you may become seriously ill or even die.
  • Excessive Heat Watch — Be Prepared! Heat watches are issued when conditions are favorable for an excessive heat event in the next 24 to 72 hours. A Watch is used when the risk of a heat wave has increased but its occurrence and timing is still uncertain.
  • Heat Advisory — Take Action! A Heat Advisory is issued within 12 hours of the onset of extremely dangerous heat conditions. The general rule of thumb for this Advisory is when the maximum heat index temperature is expected to be 100° or higher for at least 2 days, and night time air temperatures will not drop below 75°, however, this criteria varies across the country, especially for areas that are not used to dangerous heat conditions. Take precautions to avoid heat illness. If you don’t take precautions, you may become seriously ill or even die.

***Our area remains under a Heat Advisory until 8 p.m. Monday evening***

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The above chart is very informative with regards to the Heat Index. Find the air temperature and match it with the current relative humidity and you’ll get the heat index.

As always, when temperatures rise to these levels it’s best to limit time outdoors and also stay hydrated.

For more information, visit our Ocean, Bay, & Beach page to find out all you need to know before heading to the beaches or out on the water.

Be sure to connect with Eyewitness News Meteorologist Steven Matregrano on TwitterInstagram, & Facebook. Also be sure to follow the Pinpoint Weather team on Twitter.

Copyright 2021 Nexstar Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.

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