Updated Apr 13, 2026 at 09:07 PM UTC / Apr 13 at 04:07 PM CT
APR 14 - APR 23 · WEST MARKET 4-MODEL CONSENSUS
218.8 GWDDs
Mountain + Pacific + West South Central
+140.5 vs 30-Year Normal (78.3)
+152.2 vs 3-Year Avg (66.5)
+155.6 vs Last Year (63.2)
GFS
208.2
+68.1 vs national
GEFS
217.2
+83.1 vs national
IFS
233.6
+77.1 vs national
AIFS
216.1
+67.0 vs national
04-12 12z -> 04-13 12z (same cycle)
GFS
▼ 21.2
WARMER
IFS
▼ 3.4
WARMER
GEFS
▼ 1.4
WARMER
AIFS
▲ 0.2
COLDER
DELIVERY POINT COVERAGE
MOUNTAIN
EP San Juan · EP Permian · EP West TX
EP South Mainline · TW San Juan
TW Phoenix · Opal
EP South Mainline · TW San Juan
TW Phoenix · Opal
PACIFIC
SoCal Citygate · SoCal Ehrenberg
PG&E Citygate · PG&E Topock
Malin · Sumas
PG&E Citygate · PG&E Topock
Malin · Sumas
WEST SOUTH CENTRAL
Waha · HSC
Permian Basin demand side
TX/OK/AR/LA residential + commercial
Permian Basin demand side
TX/OK/AR/LA residential + commercial
WEST DAILY GWDD FORECAST -- SHAPE OF THE 10-DAY WINDOW
WEST GWDD MODEL TREND
WEST vs NATIONAL -- GFS COMPARISON
METHODOLOGY
What is West Market GWDD?
If the only gas demand in the country was in the West, weighted by where Western delivery points are, how much heating demand is there? That is what this index answers. A standalone weather-driven demand signal for Western US physical gas markets — not a slice of the national GWDD, but its own index with proprietary regional weights tuned to Western basis trading.
How to read it
Compare the West GWDD to its 30-year normal. A positive deviation means colder-than-normal weather driving higher Western heating demand — bullish for basis at EP, TW, SoCal, PG&E, and Waha delivery points. A negative deviation means milder weather and weaker demand pull — bearish for Western basis. The model trend chart shows how the forecast has evolved across runs, helping identify warming or cooling trends before they hit the market.
Important limitations
This is a theoretical, weather-driven demand model. It does not account for pipeline maintenance, operational flow orders (OFOs), import/export swings, storage inventory levels, LNG feedgas demand, power burn substitution, or other supply-side and infrastructure factors that materially affect realized Western basis pricing. Use as one input among many — not as a standalone trading signal.
If the only gas demand in the country was in the West, weighted by where Western delivery points are, how much heating demand is there? That is what this index answers. A standalone weather-driven demand signal for Western US physical gas markets — not a slice of the national GWDD, but its own index with proprietary regional weights tuned to Western basis trading.
How to read it
Compare the West GWDD to its 30-year normal. A positive deviation means colder-than-normal weather driving higher Western heating demand — bullish for basis at EP, TW, SoCal, PG&E, and Waha delivery points. A negative deviation means milder weather and weaker demand pull — bearish for Western basis. The model trend chart shows how the forecast has evolved across runs, helping identify warming or cooling trends before they hit the market.
Important limitations
This is a theoretical, weather-driven demand model. It does not account for pipeline maintenance, operational flow orders (OFOs), import/export swings, storage inventory levels, LNG feedgas demand, power burn substitution, or other supply-side and infrastructure factors that materially affect realized Western basis pricing. Use as one input among many — not as a standalone trading signal.