US Morning Demand Note, Saturday, July 25, 2026
The dominant trading signal this morning is a broad, persistent heat anomaly running 121 CDDs above normal on the 15-day gas-weighted national total, with the latest run adding another 6 CDDs to that ledge, a directionally consistent move that keeps the demand narrative firmly in place.
The synoptic structure behind this is a high-amplitude ridge parked over the southern tier and extending influence northward into the Midwest. The pattern is not flipping, it is deepening. The national CDD series moved from 234 to 240 against a seasonal normal of just 119, meaning the market is pricing roughly double the typical cooling load for this window. The most significant model signal this run is concentrated around August 7, where a day-level gap of 4.2 CDDs separates the current run from the prior, that magnitude of single-day divergence, sitting two weeks out, flags an ensemble spread still wide enough to carry revision risk in either direction. Whether that date marks a ridge breakdown or a continuation inflection is the key conditional: if the ridge axis holds and that gap closes upward in the next run, the 15-day total has further room to climb; if the spread resolves toward the lower envelope, some demand premium comes off the back end of the strip.
Zone-level differentiation is meaningful this morning. ERCOT is the outlier, a 49-CDD jump to 428 against a normal of 172 puts the anomaly at 256, with a sigma of 20 meaning the signal is roughly 13 standard deviations above climatology. That is not noise. HSC and Waha are pricing a Texas grid under sustained stress, and the instrument chip being lit confirms the signal is strong enough to clear model thresholds for demand significance. South/West follows directionally, 19 CDDs added, anomaly of 218, with SoCal and Transco Z4 both participating in a ridge-induced heat pattern that is geographically consistent with the same synoptic driver.
The Midwest is the sharpest revision story this run: a 16-CDD addition to the 15-day total brings Chicago Citygate and MISO into anomaly territory of 149 CDDs, against a normal of only 73. That is a doubling of climatological pace. The magnitude of the revision, 16 CDDs in a single model run, suggests the northern extent of the ridge is being captured more aggressively by the latest guidance. Northeast is the lone counter-signal, shedding 19 CDDs to land at a still-bullish anomaly of 59, which likely reflects a trough brushing the region's back end rather than any fundamental pattern change, Algonquin and M3 remain chip-lit despite the negative delta.
What changes the picture from here is threefold: resolution of the August 7 ensemble spread in the next one or two runs will either confirm or erode the demand premium on the back of the strip; any northward ridge retraction would disproportionately hit the Midwest revision, which is the freshest and therefore most susceptible add; and Northeast's negative delta bears watching, if it extends into the next run, it begins to represent a genuine pattern departure rather than short-range trough noise.