(Welcome: we are now on a later and more updated thread, which can be found here: http://www.theoildrum.com/node/4525 NB: you may want to just go the front page (it will be post #1 or #2) to get to the most recent thread: http://theoildrum.com ...)

(all the maps and models moved under the fold to conserve bandwidth...scroll down)

Updated 9/12 2300 EDT--next update in the morning when we know more about where and how much power/wind was involved. Hurricane Ike's current track currently is headed directly for Houston/Galveston and is expected by the National Hurricane Center to be Category 2 (or perhaps a 3) at a late Friday/early Saturday am landfall, which remains in striking distance of over 5 million bpd of US petroleum refining capacity. (A little perspective: 5 MMBBL is about 30% of US capacity (about 15 MMBBL), and a bit less than 6% of global capacity (~85 MMBBL)).

The concern now is the where of landfall. If the storm continues further west before turning (see Chuck's update below), then Texas City/Baytown will be in a very bad place, and that's >1MMBBL all by itself. The next two maps represent the current NHC track (the further "left" the storm goes the worse it is for TX City and Baytown, note red storm surge in this track, Baytown is at the back of the bay) and the GFDL track below...as of this update the eye was wobbling to the left of the NHC track, which isn't a good thing for Texas City.

(all the maps and models moved under the fold to conserve bandwidth...scroll down)

(Welcome: we are now on a later and more updated thread, which can be found here: http://www.theoildrum.com/node/4525 NB: you may want to just go the front page (it will be post #1 or #2) to get to the most recent thread: http://theoildrum.com ...)

Hurricane Ike's current track predicts landfall between Corpus Christi and Galveston, but has been moving northwards. Within the current NHC storm path lies about 5 million bpd of US petroleum refining capacity. (Perspective: 5 MMBBL is about 30% of US capacity (about 15 MMBBL), and a bit less than 6% of global capacity (~85 MMBBL). Also, the MMS reported Wednesday that staff has been evacuated from 452 production platforms (63.0%) and 81 rigs (66.9%) – (95.9% of the oil production and 73.1% of the natural gas production has been shut-in as a precautionary measure for Hurricane Ike.)

Just what is summer gasoline? Twice a year, in the fall and in the spring, you hear about the seasonal gasoline transition. However, most people probably don’t understand what this actually means. AAA published a Top 10 list explaining the seasonal rise in gasoline prices, and summer gasoline checked in at #7:

7. The summer blend switchover. This transition from winter-blend to summer-blend fuel, a concoction that causes less smog, occurs every spring. It causes a dip in gasoline supplies as refineries in the U.S. shut down temporarily to retool their production facilities.

That's only partially correct, and is probably the extent of most people's understanding of this transition. But given that I am very keen that people should understand the energy industry, it is worth a review, and a layman's explanation. I explained the details behind this transition in Refining 101: Winter Gasoline. But let’s review some concepts.

Scroll down for the 5:00p and 11:50p EDT updates.

Hurricane Dean became a Category 5 storm last night with winds reaching 165 mph and reaching a low pressure of 909 mb (as of 2:15a EDT; Katrina was 920 mb and Camille 909 mb). Landfall occurred early yesterday morning with a second landfall occurring some time today. This is an historic hurricane by any standard.

Why this matters: If there were Cat2 winds in that area, we could have been talking about around 2.5 million barrels per day of Mexico's supply capacity being shut in for a while, and some of that shut in for an extended amount of time. Around 1.5 mbpd of that capacity is exported to the US (of the 20.5 mbpd the US uses, and the 85mbpd the world uses, each day). There are also some questions about the resilience of refineries and flow lines in the area of the second landfall.

Update (Khebab, 11:50 EDT):

HURRICANE DEAN ADVISORY NUMBER 35A
...DEAN IS MOVING BETWEEN THE WEST AND WEST-NORTHWEST NEAR 20 MPH...32KM/HR...AND THIS GENERAL MOTION IS EXPECTED DURING THE NEXT 24 HOURS. ON THE FORECAST TRACK...DEAN IS EXPECTED TO BE VERY NEAR THE COAST OF CENTRAL MEXICO DURING THE DAY WEDNESDAY. MAXIMUM SUSTAINED WINDS REMAIN NEAR 80 MPH...130 KM/HR...WITH HIGHER GUSTS. DEAN IS A CATEGORY ONE HURRICANE ON THE SAFFIR-SIMPSON SCALE. AN AIR FORCE PLANE IS CURRENTLY APPROACHING DEAN. SOME RE-STRENGTHENING IS FORECAST DURING THE NEXT 24 HOURS.

 HURRICANE FORCE WINDS EXTEND OUTWARD UP TO 35 MILES...55 KM...FROM THE CENTER...AND TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 140 MILES...220 KM. ESTIMATED MINIMUM CENTRAL PRESSURE IS 970 MB...

Cantarell and KMZ oil complex, 50-knots wind speed probabilities (NHC, forecast #35). Click to Enlarge.

Refinery position, 50-knots wind speed probabilities (NHC, forecast #35). Click to Enlarge.

More under the fold.