No this is not an EKG, but rather a look at the dew point, temperature and heat index arrhythmia over time? ;)
The GFS BUFKIT OVERVIEW shows a lot of things and I'll point them out to you.
Let us start with the green dew point line on the bottom...
It shows dew point temperatures rising from the comfy 50s we have been enjoying into the uncomfortable 70s by the weekend.
The second line up which is the temperature line, shows a spike early on, them temperatures held back a bit over the weekend and then rising well into the middle and upper 90s next week. Yuck!
The line above that is the heat index or how hot it feels. At this time, despite the warm up next week, feels like temperatures won't be too extreme thanks to slightly lower dew point temperatures.
Since I brought up the heart, I wanted to share some information about how exerting your body on a hot and humid day can impact you:
How hot weather affects your physiology
When you exercise, your blood gets pumping to deliver adequate oxygen to your muscles. This leads to a rise in body temperature. When you're getting physical in above-average temperatures, this effect is more intense, because your heart sends large amounts of blood to the skin in an
attempt to cool it down and, in turn, leaves less blood in the muscles, further speeding the heart rate.
What's more, in humid weather, sweat is sometimes unable to do its job because it doesn't evaporate as efficiently as it does in a drier climate. This may drive body temperatures to dangerous extremes.
There are three basic levels of heat-related illness: heat cramps, heat exhaustion and heatstroke. You should be familiar with the signs of each of these conditions so you can identify them when you or someone else may be in danger of overheating.
Jill Gilardi Fox 6 Meteorologist