Between 1 And 6
Saturday, September 5, 2026 · 12:17 PM

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Major to extreme heat risk continues through this weekend with heat index values of one hundred five to one hundred ten degrees. A Heat Advisory remains in effect. Low chance of strong to severe storms this afternoon with damaging wind gusts as the primary threat. Heat risk lessens early next week, but temperatures remain above-normal through the forecast period. Yeah! Shake it off, baby! It is getting wild in Middle Tennessee! Well, before noon hit the clock, the numbers started to climb Triple digits on the glass, honey, right on time Decaying systems off the Smokies, yeah, they ran away But I got a second push coming for you today Seven hundred Joules of downdraft at seven A.M. Now we are creeping up to twelve hundred—tell all your friends! Shortwave sneaking in late tonight after eight So do not keep a boy waiting, do not hesitate The soundings are loaded, the atmosphere is ripe You know I am exactly your type! We got the heat advisory, we got high-voltage sparks! Crashing down through the county, leaving fire in the dark! So step into the party, baby, get your fixes Because the sky is gonna burst between 1 and 6! Now the model consistency is a little bit loose Convection getting scattered when I turn on the juice Potent outflows ripping through the afternoon heat Damaging gusts when we step out in the street Southwestern areas lingering hot through the night Oh, you know I like it when the air is this tight! If the second wave waits, we might lose a little steam So let us catch the prime window of this summer dream The soundings are loaded, the atmosphere is ripe You know I am exactly your type! We got the heat advisory, we got high-voltage sparks! Crashing down through the county, leaving fire in the dark! So step into the party, baby, get your fixes Because the sky is gonna burst between 1 and 6! Yeah! Twelve hundred Joules! Outflows popping, baby! We are taking over this town! Between one and six! Yeah, between 1 and 6!
The forecast discussion
KEY MESSAGES
Updated at 1214 PM CDT Sat Sep 5 2026
- Major to extreme heat risk continues through this weekend with heat index values of 105 to 110 degrees.
A Heat Advisory remains in effect.
- Low chance of strong to severe storms this afternoon with damaging wind gusts as the primary threat.
- Heat risk lessens early next week, but temperatures remain above-normal through the forecast period.
SHORT TERM
(Rest of today through Sunday) Issued at 1051 AM CDT Sat Sep 5 2026
Things are already starting to heat up across Middle TN this morning.
Even before noon, several observation sites are reading triple digit heat indices and climbing.
As such, a Heat Advisory remains in effect areawide through 8PM tonight.
Will have a smaller segment take over through Sunday in the southwestern CWA due to lingering heat impacts but most areas will drop below criteria (105 HI) tomorrow.
This warm and strongly unstable airmass over the mid state region will contribute to our severe weather threat this afternoon.
A decaying MCS is noted off to the east over the Smokies as of 11AM, but most CAMs suggest another push of storms later today.
This morning's KOHX sounding revealed upwards of 700 J/kg of DCAPE at 7AM, which is plenty for strong downbursts already first thing in the morning.
With forecast soundings suggesting this to creep up to 1200 J/kg this afternoon and evening, watch for potent outflows (strong wind gusts) in any thunderstorms that develop over Middle TN in the heat of the afternoon.
Timing of this severe threat is very difficult to nail down just given the lack of consistency in the CAMs, especially since the first MCS is already pretty much out of the area and is not being resolved well.
If this convection adopts more of a summertime characteristic and is more scattered in the afternoon, the parameter space is much more supportive of severe storms between about 1PM and 6PM.
If nothing is able to develop until the second push with the shortwave later tonight (after 8PM), the environment will most likely lose enough steam to preclude organized severe storms.
Either way, gusty winds will be the primary hazard.
LONG TERM
(Sunday Night through next Saturday) Issued at 1051 AM CDT Sat Sep 5 2026
Unfortunately, this heat is not leaving the forecast any time soon.
LREF suggests the midlevel ridge to set right back up over the southeastern CONUS next week, pretty much maxing out the 500 mb height climatology for early September.
While this airmass isn't going to be nearly as humid, we still have forecast highs in the low to mid 90s well into next weekend.
This is almost 10 degrees above normal.
PoPs remain low (<15%) until Thursday and Friday as another cold (read: still hot) front sweeps through.
No big temperature dip behind the front into the weekend, just less humidity.