US Morning Demand Note, Monday, August 3, 2026
The headline: National gas-weighted CDDs shed 13 units run-to-run but remain 117 above seasonal normal, with all four demand-supportive zones keeping their instrument chips lit, the aggregate pull on cooling burn is still well above anything the calendar expects this time of year.
The run-to-run story is one of a pattern that is cooling at the edges while holding at the core. The northern tier, Midwest and Northeast, posted the biggest revisions this cycle, down 12 and 22 CDDs respectively, while ERCOT actually added 7 CDDs and the South/West barely moved at minus 1. That divergence points to a synoptic evolution where the dominant ridging is not breaking down uniformly but rather contracting southward, with models advertising at least one shortwave trough or frontal boundary capable of trimming heat across the upper Midwest and Mid-Atlantic window. The crux of model disagreement lands squarely on August 14, where the widest single-day run-to-run gap registers at minus 6.1 CDDs, a meaningful signal that the forecast community has not yet converged on whether that trough delivers a genuine northern-tier break or merely grazes the region before the ridge reloads. If the trough axis punches deeper into the Ohio Valley, the Northeast and Midwest revisions keep coming and the national number continues to bleed toward 230 and below. If the ridge reasserts across the central CONUS and shunts the trough northeast before it can establish, the northern-tier CDD loss stalls and the national figure holds closer to current levels. ERCOT's uptick on this run, sitting at an anomaly of 231 above its own normal, is consistent with a scenario in which Texas stays under the heat dome's core regardless of what the northern tier does.
Across the zones, the picture is uniformly bullish on anomaly even after the revisions. ERCOT is the structural anchor, 400 adjusted to 407 CDDs against a normal of 176, and that 231-unit anomaly, running more than 10 standard deviations above its sigma of 23, is not a marginal demand signal. Cooling burn into the ERCOT grid and onto HSC and Waha pricing points is deep and persistent through the 15-day window regardless of which scenario plays out for the north. The South/West zone echoes that reading; a minus-1 CDD revision to 328 against a normal of 144 leaves an anomaly of 183, and SoCal and Transco Z4 both reflect load that is far from resolving. The Northeast's minus-22 revision is the largest in absolute terms but still lands at 110 above normal, the trough scenario would close that gap faster than the ridge-reload scenario, and the August 14 day is the clearest expression of that binary. Midwest anomaly at 96 above normal with a sigma of 21 sits at roughly 4.5 standard deviations; even the soft scenario leaves Chicago Citygate with well-above-normal demand through mid-month.
The market read remains supportive, Henry Hub and regional power both reflect cooling burn running above normal across a wide geographic footprint. What changes the picture: resolution of the August 14 trough question over the next two to three model runs, any shift in ERCOT's upward revision trend that would signal ridge displacement, and whether the Northeast continues bleeding CDDs past the minus-22 adjustment already in hand. Watch the northern-tier convergence; that is where the next directional information arrives.