As of the week ending June 12, 2026, the US Strategic Petroleum Reserve (SPR) held approximately 340.25 million barrels of crude oil… Sounds like a lot, but it is approaching the danger zone. In late May, that number was 372 million barrels, which consisted of Sweet crude: ~142 MMB | Sour crude: ~230 MMB, according to the US Department of Energy.

The oil is stored in caverns at four sites:

Bryan Mound: ~166 MMB

Big Hill: ~90 MMB

West Hackberry: ~72 MMB

Bayou Choctaw: ~44 MMB
To understand how perilous the situation is you need to know that if the oil level in these caverns falls below a certain level that the structural integrity of the caverns would be jeopardized. The most commonly cited operational floor is around 20% of capacity. Mike Sommers, CEO of the American Petroleum Institute, told CNN that the SPR must be at least 20% full to remain operational — that’s roughly 143 million barrels against the SPR’s ~727 million barrel design capacity.

So subtract 143 barrels from 340.25… That means the US only has 197.25 million barrels left before the caverns could face irreparable damage. If the US consumers, who use 20 million barrels a day, had to rely exclusively on the SPR, the US only has less than a 9-day supply of reserves. If you compare the amount reported at the end of May (i.e., 372 MMb) with the June 15th report, the US is drawing 16 million barrels a week from the reserve. This is the optimistic scenario, i.e., the US has roughly a 12-day supply before the proverbial shit hits the fan.

But wait, it gets worse. The US Military has blown through its jet fuel reserves. The problem is compounded becuase Diesel reserves are at 25 year low. Diesel and Jet Fuel are critical Distillates. So the Trump administration must make a choice: support the military jets with jet fuel, or support the trucking Fleet with enough diesel fuel, to provide food and products to US consumers. Trump can’t wage war and keep the economy going at the current rate because diesel and jet fuel compete with each other when comes to production. So the question is, do you want to wage war or do you wanna save the economy and keep the trucks moving on the road? This is the main reason Trump signed the MoU with Iran.

The risk is not that every truck or aircraft stops at once. The risk is that a forced fuel-priority decision creates cascading shortages and price shocks across logistics, aviation, agriculture, construction, and consumer supply chains. A war-time jet-fuel surge could reduce the diesel cushion; a civil-aviation diversion could disrupt passenger movement and air cargo.

The EU therefore faces a compound trap. Russian gas is being removed by law, Persian Gulf flows are exposed to war, U.S. LNG has become indispensable but expensive, storage refill is costly, and Germany’s industrial model remains dependent on affordable dispatchable energy.

And our SPR availability?

The “weeks left numbers” have been all over the place!

The total the spr can hold is 714m barrels.

20% of that to prevent collapse is 143m. (Note ai says 10-15%)

Add an additional 150m is reserved specifically for national defense.

340.25m was the amount left a week ago.

From that, subtract 143 to prevent cavern collapse & 150 for national defense leaves…

47m barrels for commerce & driving!!!

Since we’re drawing down ~9m/week, we may be down to 38mb available by now.

4 weeks.

Unless the caverns only need 10% to prevent collapse, in which case 100m/ 10 weeks.

MATH IS NOT DOOM.