The Furnace Has No Off Switch
Friday, August 14, 2026 · 11:59 AM
Lyrics
Updated at eleven fifty-five A.M. Central Daylight Time, Friday, August fourteen, twenty twenty-six. Dangerous heat is expected through the weekend with triple digit heat indices across most of Middle Tennessee. This is resulting major to extreme risk for heat-related illnesses. Isolated showers and storms today, mainly east of Interstate sixty-five. Any stronger storm will be capable of producing gusty winds and heavy rain. Though there may be a slight decrease in heat risk next week, temperatures above-normal are favored for the next several days. The furnace is running over Middle Tennessee Deep layer ridging won't set us free A hot southwesterly breeze blows in from the south Dust in our lungs and fire in our mouth Five to ten degrees above normal today And the high terrain heat advisory is here to stay Heat index values driving up high One hundred five to one hundred twelve under the sky Level three and level four risk on the chart This heat wave is breaking every heart The furnace is running and the off switch is gone Major to extreme risk carrying on Extreme Heat Warning west of the plateau No overnight relief anywhere we go Low probability of precipitation down in the flat Rain-cooled air won't do a thing for that Isolated storms sticking east of Interstate sixty-five Just trying to keep the air conditioning alive Number one killer across the United States Trapped in the humidity behind closed gates Heat index values driving up high One hundred five to one hundred twelve under the sky Level three and level four risk on the chart This heat wave is breaking every heart The furnace is running and the off switch is gone Major to extreme risk carrying on Extreme Heat Warning west of the plateau No overnight relief anywhere we go
The forecast discussion
NEW SHORT TERM, LONG TERM
KEY MESSAGES
Updated at 1155 AM CDT Fri Aug 14 2026
- Dangerous heat is expected through the weekend with triple digit heat indices across most of Middle Tennessee.
This is resulting major to extreme risk for heat-related illnesses.
- Isolated showers and storms today, mainly east of I-65. Any stronger storm will be capable of producing gusty winds and heavy rain.
- Though there may be a slight decrease in heat risk next week, temperatures above-normal are favored for the next several days.
SHORT TERM
(Rest of today through Saturday) Issued at 1155 AM CDT Fri Aug 14 2026
The furnace is still running across the region, and the off switch is nowhere in sight unfortunately.
Deep-layer ridging continues to strengthen across the southern and southeast US which is favoring a hot southwesterly breeze across Middle Tennessee.
Humidity levels remain elevated which is resulting in heat index values in the 105-112 degree range.
Risk for heat-related illnesses is running in the Major to Extreme levels (3 and 4 on a scale to 4) across all of Middle Tennessee through this weekend.
This is made worse by the long-duration nature of the heat wave and limited relief overnight, especially in urban areas.
As a result, an Extreme Heat Warning has been issued for areas west of the Cumberland Plateau through Sunday.
The rest of the high terrain areas have been added to the existing Heat Advisory through Sunday.
Though many may argue "it's always hot in August", it's important to remember that our temperatures are running 5-10 degrees above normal, not everyone is has reasonable access to AC, and heat is the #1 weather-related killer in the US.
Unfortunately PoPs remain low overall, so relief from rain-cooled air is looking very sparse and mainly for today generally east of I-65 where isolated showers and storms are forecast this afternoon and evening.
Not looking at much activity for tomorrow on latest guidance.
LONG TERM
(Saturday Night through next Friday) Issued at 1155 AM CDT Fri Aug 14 2026
Excessive heat will continue to be the main concern through Sunday.
In fact, they may persist into Monday, particularly for areas along I-40 and south. eat-related headlines may be extended into Monday at some point this weekend.
Some decline in temperatures are forecast starting Monday across the north abd into Tuesday for the whole area as ridging shifts southwestward.
This may open the door for a few more thunderstorms during the afternoon and evening Monday at least, but overall temperature trends remain in the above-normal category through the entire forecast period with low chances for rain/storms most days.