Today the contract rolled over to the following month. So the future contract was higher. It will smooth itself out, but at $33 there's more time in the contract.
oil was even until this hour. now down -1.8% going into the open. could make for a rocky open.
re: the discrepancy across months, possibly due to anticipation of varying supply/demand ratios per month. eg: it's still heating oil season now, but less so in april.