US Morning Demand Note, Friday, August 07, 2026
The operative signal this morning is a structurally elevated heat pattern absorbing a run-to-run markdown at its northern edge while the southern anchor holds, net result stays supportive across all four demand zones, with the Midwest bearing the sharpest model revision.
The national 15-day gas-weighted CDD reading stepped down from 227 to 211 overnight, a delta of -16, but that number still sits 98 units above normal against a seasonal reference of 113. The erosion is real but it is trim on a pattern that remains deeply anomalous, not a regime shift. What the latest run is describing is a ridge complex that appears to be shedding latitude on its poleward flank, the widest single-day revision in the 15-day window lands at August 14, where the model moved -5.657 CDDs in one run. That magnitude on a single day, clustered in the medium range, is consistent with a trough intrusion working south from the northern tier, putting progressive pressure on the northern zones while the subtropical core remains anchored. If subsequent runs hold that August 14 erosion and it does not propagate further into the back end of the window, the bull case for the final week of the period remains intact. If the next run extends that trough track southward and the day-14 loss deepens, the Midwest and Northeast prints will follow it down.
Zone-level reads confirm that asymmetry. ERCOT is the cleanest tell: 417 to 415, a delta of just -2, sitting 240 units above a normal of 175. At 10 standard deviations of implied sigma, the ERCOT signal is essentially stationary, the model sees the Gulf Coast ridge anchor as unmoved, and the HSC/Waha complex prices accordingly. That is the demand floor. South/West shed 12 units to 319 against a normal of 141, leaving an anomaly of 178; the SoCal side of that zone may be seeing the early edge of a Pacific trough working into the Intermountain West, but the Transco Z4 side is still flush with cooling load. Northeast dropped 15 to 195 on a normal of 90, anomaly 105, Algonquin and TETCO M3 remain well above seasonal reference even after the revision, but this is the zone most exposed if the medium-range trough deepens. The Midwest took the sharpest absolute haircut at -23, landing at 108 against a normal of 66; the 43-unit anomaly and 2.2-sigma read still warrant Chicago Citygate and MISO instrument attention, but this zone is where the next model run will most clearly either validate or refute the trough narrative.
All four instrument chips remain lit. The market read is supportive: Henry Hub and regional power both reflect cooling burn running materially above normal, and no zone has crossed into neutral territory.
What changes the picture from here is whether the August 14 trough signal in the medium range extends its day-gap southward on the next run or stabilizes and gets absorbed. A second consecutive deepening of that mid-month feature would pressure Midwest and Northeast prints in a way that begins to matter for the final-week aggregate. ERCOT holding near flat across runs would be the confirmation that the subtropical core is not moving and that any northern erosion is bounded.