Mid-Atlantic Drought is a Worry! Influence on Excessive Heat Risk for Mid-Summer!

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Climate Impact Company Midday Update

Issued: Thursday June 25, 2026

The concern: A severe Mid-Atlantic drought…historically, amplified hot weather risk! 12Z GFS rips 116 CDD for July 3-9!

Fig. 1-3: U.S. Drought Monitor identifies Mid-Atlantic region in severe drought and the Mid-Atlantic is adjusted hotter in the medium range.

Discussion: Extended range models, well into July want to cool the East especially AI models. But a severe drought in the Mid-Atlantic region is a significant concern as July approaches. The risk of over-achieving heat is significantly elevated across a large drought area during July. The hot bias provided by extreme dry soil moisture can easily overwhelm synoptic level forecasts and that’s the concern in July for the Mid-Atlantic region. The 12Z GFS Mid-Atlantic heat is hard to ignore.

CDD EIA EndForecast12-Hour Change24-Hour Change30-Year Normal10-Year Normal
6/2555.7-0.1-0.364.371.6
7/285.2+0.7+5.771.579.5
7/9116.3+14.2+17.677.385.3

Table 1: The midday 12Z GFS U.S. population weight CDD forecast into early July.