Weekly Gas Population Week HDD Observations for December/January Forecast
12/27/2021, 8:38 am ESTDecember 2021 Pattern Eases West U.S. Drought
12/30/2021, 3:45 pm EST
Fig. 1-2: The midday 12Z GFS medium-range U.S. temperature anomaly forecast.
Fig. 3: The midday 12Z GFS temperature changes over the next 15 days.
Fig. 4: The midday 12Z GFS indicates a cold pulse for the Northeast U.S. centered on next TUE/WED. Above is the indicated Tuesday maximum temperatures.
Fig. 5: The midday 12Z GFS indicates a cold pulse for the Northeast U.S. centered on next TUE/WED. Above is the indicated Wednesday minimum temperatures.
| Dates | HDD Forecast | 12-Hr Change | 24 Hours Ago | 10-Year NML | 30-Year NML |
| Dec. 24-30
| 152.7 | -1.1 | 153.6 | 196.5 | 201.1 |
| Dec. 31-Jan. 6 | 206.5 | +5.2 | 205.1 | 203.7 | 205.7 |
| Jan. 7-13
| 202.0 | -14.1 | 194.2 | 207.1 | 209.0 |
Table 1: Indicated is the 12Z GFS projected gas population weight HDD for the U.S. compared to 12 and 24 hours ago into mid-January.