Early Season ERCOT Heatwave!

Neutral ENSO Here To Stay
05/08/2025, 3:05 pm EDT
Neutral ENSO Here To Stay
05/08/2025, 3:05 pm EDT
Show all
A graph of a state AI-generated content may be incorrect.

A close-up of a logo Description automatically generated

Climate Impact Company Daily Feature

Issued: Monday, May 12, 2025

Highlight: Early season ERCOT heatwave!

A graph of a state AI-generated content may be incorrect.

Fig. 1: ERCOT SYSTEM daily 15-day temperature average forecast compared to the 30-year normal.

A calendar with numbers and numbers AI-generated content may be incorrect.

Fig. 2: Using all models, the 15-day maximum temperature forecast for Houston.

A calendar with numbers and numbers AI-generated content may be incorrect.

Fig. 3: Using all models, the 15-day maximum temperature forecast for San Antonio.

A calendar with numbers and a red square AI-generated content may be incorrect.

Fig. 4: Using all models, the 15-day maximum temperature forecast for Dallas.

Discussion: Subsidence on the back side of an East Coast trough causes the onset of an excessive hot weather pattern across Texas on Tuesday. The hottest day of an extended heatwave is Wednesday when southwest flow extending across Texas from the hot air source region across the Mexico drought area occurs. Widespread 100’s are likely on Wednesday. The hot southwest flow peaks Wednesday although likely remaining through the 10-day heat wave.