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Released on December 21, 2005
(Next Release on December 29, 2005)

The Importance of Weather
Weather can be an important factor affecting the result of National Football League games in December. Cold weather or snow can give one team an advantage over another this month, and also next month during the playoffs. Weather can also be an important factor influencing oil product prices during the winter, not just for heating oil, but or gasoline as well.

So far this month, in the Central Atlantic and New England regions, where most of the nation’s heating oil is consumed, it has been somewhat colder than normal. A stretch of colder-than-normal weather over this long a period can add pressure to crude oil prices. The cold weather increases the demand for heating oil, which ultimately requires refiners to use more crude oil to produce more heating oil, either to meet the surge in demand or, sometime later, to help rebuild inventories that are drawn down. As a result, crude oil prices are often bid up during a bout of colder-than-normal weather, and this latest stretch of cold weather was no exception. From a recent low of $56.50 per barrel on November 29, the near-month futures price of crude oil on the New York Mercantile Exchange (NYMEX) rose nearly $5 per barrel to reach $61.37 as of December 13, before falling back to $57.81 as of December 20. In part, rising crude oil prices have boosted retail gasoline prices in many parts of the country, with the U.S. average price for regular gasoline rising by 6.4 cents per gallon from December 5 to December 19, according to EIA’s weekly retail price survey. A sustained increase of roughly $5 per barrel in crude oil prices would normally translate to an increase of about 12 cents per gallon in retail gasoline prices, if all of the increase in crude oil prices was passed through to the consumer. Thus, a further rise in retail gasoline prices might be expected, if crude oil prices were to remain at or above the level reached on December 13 for a sustained period.

But, just as cold weather can drive prices higher during the winter, expectations of warmer weather can help drive prices lower, and this is what has occurred over the past week. With several private forecasters predicting warmer-than-normal weather for much of the Central Atlantic and New England regions on the horizon, some of the steam in crude oil prices has been released and the near-month futures price on the NYMEX has dropped below $58 per barrel on December 20. Of course, weather is just one factor influencing the market, and it will be interesting to oil market analysts to see how today’s release of EIA weekly petroleum data through December 16 will affect oil prices. Data released earlier today showed that while crude oil inventories did continue to increase, distillate fuel (diesel fuel and heating oil combined) inventories decreased, due in large part to a surge in demand. The recent cold weather has helped distillate fuel demand to soar well above year-ago levels, and gasoline demand is also growing, despite retail prices well above $2 per gallon. Where oil prices head from here may depend, in large part, on how the rest of the winter unfolds.

Residential Heating Fuel Prices Increase Further
Residential heating oil prices rose for the period ending December 19, 2005. The average residential heating oil price increased 2.5 cents from last week to reach 243.9 cents per gallon, an increase of 44.6 cents from this time last year. Wholesale heating oil prices increased by 0.7 cent to reach 175.8 cents per gallon, an increase of 30.4 cents compared to the same period last year.

The average residential propane price gained 4.0 cents, to reach 199.6 cents per gallon. The resulting price was 27.8 cents over the 171.8 cents per gallon average for this same time last year. Wholesale propane prices increased 3.5 cents per gallon, from 115.3 cents to 118.8 cents per gallon. This was an increase of 26.2 cents from the December 20, 2004 price of 92.6 cents per gallon.

U.S. Average Retail Gasoline Price Rises for Second Week in a Row
The U.S. average retail price for regular gasoline gained 2.6 cents to 221.1 cents per gallon, rising for the second week in a row. Price changes were mixed, with the West Coast seeing a decrease of 2.4 cents to 223.2 cents per gallon. California prices fell 2.8 cents to 224.9 cents per gallon. The East Coast saw the largest increase of 4.4 cents to 222.5 cents per gallon, with New England prices increasing 5.8 cents to 222.9 cents per gallon.

Retail diesel fuel prices rose 2.6 cents to reach 246.2 cents per gallon, which is 47.8 cents higher than last year. Price changes were up throughout the country, with the East Coast seeing the largest regional increase of 4.1 cents to 249.9 cents per gallon. Midwest prices were up 3.4 cents to 244.3 cents per gallon. West Coast prices gained only 0.5 cent to 250.5 cents per gallon, but California prices gained 5.6 cents to 252.1 cents per gallon.

Propane Inventories Sharply Lower
U.S. inventories of propane moved sharply lower by 3.6 million barrels last week as cold weather continued to grip portions of the Midwest and East Coast, leaving inventories as of December 16, 2005 at an estimated 64.9 million barrels. Inventories have dropped by about 6.6 million barrels since the start of the month, or about 60 percent of the 5-year average for December. However, even if inventories continued on this same path with sharp weekly declines through the end of the month, propane inventories would still maintain the modest inventory cushion that was built up during October and November 2005. Regional inventories were mostly lower with the Midwest reporting the largest weekly drop of 1.9 million barrels, followed by a 1.6-million-barrel drop in the Gulf Coast region. While the East Coast managed to report a 0.1-million-barrel gain last week, the combined Rocky Mountain/West Coast region showed a 0.1-million-barrel decline. Propylene non-fuel use inventories gained 0.1 million barrels last week to account for a larger 5.1 percent share of total propane/propylene inventories, compared with the prior week’s 4.7 percent share.

Text from the previous editions of “This Week In Petroleum” is now accessible through a link at the top right-hand corner of this page.



Retail Prices (Cents Per Gallon)
Conventional Regular Gasoline Prices Graph. Residential Heating Oil Prices Graph.
On-Highway Diesel Fuel Prices Graph. Residential Propane Prices Graph.
Retail Data Changes From Retail Data Changes From
12/19/05 Week Year 12/19/05 Week Year
Gasoline 221.1 values are up2.6 values are up39.6 Heating Oil 243.9 values are up2.5 values are up44.6
Diesel Fuel 246.2 values are up2.6 values are up47.8 Propane 199.6 values are up4.0 values are up27.8
Spot Prices (Cents Per Gallon)
Spot Crude Oil WTI Price Graph. New York Spot Diesel Fuel Price Graph.
New York Spot Gasoline Price Graph. New York Spot Heating Oil Price Graph.
Spot Data Changes From
12/16/05 Week Year
Crude Oil WTI 58.01 values are down-1.40 values are up11.70
Gasoline (NY) 158.8 values are down-0.9 values are up46.9
Diesel Fuel (NY) 169.9 values are down-0.7 values are up25.8
Heating Oil (NY) 167.9 values are up1.6 values are up26.5
Propane Gulf Coast 106.8 values are up0.1 values are up26.9
Note: Crude Oil WTI Price in Dollars per Barrel.
Gulf Coast Spot Propane Price Graph.
Stocks (Million Barrels)
U.S. Crude Oil Stocks Graph. U.S. Distillate Stocks Graph.
U.S. Gasoline Stocks Graph. U.S. Propane Stocks Graph.
Stocks Data Changes From Stocks Data Changes From
12/16/05 Week Year 12/16/05 Week Year
Crude Oil 322.5 values are up1.3 values are up26.6 Distillate 127.7 values are down-2.8 values are up7.8
Gasoline 204.1 values are down-0.3 values are down-7.3 Propane 64.946 values are down-3.566 values are up6.186