U.S. Cash Crude-Grades sideways on thin volumes

May 6 (Reuters) - U.S (Other OTC: UBGXF - news) . cash crude differentials moved

sideways on Friday on thin volumes, dealers said.

The move follows a number of production facilities shutting

following a raging wildfire that forced some 88,000 residents to

flee Fort McMurray in Alberta, Canada, earlier this week.

The closures of production caused a spike in Canadian crude

prices earlier, though volumes in the Canadian market were also

thinly traded on Friday.

BP Plc will not be able to deliver on some contracts

for Canadian crude, two trading sources said on Friday, the

latest sign that output cuts due to the wildfires are curbing

supply from the oil sands region. Others were

expected to follow.

* Light Louisiana Sweet (WTC-LLS) for June delivery rose 2

cents to a midpoint of $1.92 and traded between $1.90 and $1.95

a barrel premium to U.S. crude futures.

* Mars Sour (WTC-MRS (LSE: MRS.L - news) ) fell 5 cents to a midpoint of -$3.25

and traded at a $3.30 a barrel discount to U.S. crude futures

.

* WTI Midland (WTC-WTM) rose 2.5 cents to a midpoint of

-$0.2 and traded between 20 and 25 cents a barrel discount to

U.S. crude futures.

* West Texas Sour (WTC-WTS) rose 8 cents to a midpoint of

-$1.27 and traded at a $1.25 a barrel discount to U.S. crude

futures.

* WTI to East Houston traded at $1.65 a barrel over WTI.

* ICE Brent July futures rose 36 cents to settle at

$45.37 a barrel.

* WTI June crude futures rose 34 cents to settle at

$44.66 a barrel.

* The Brent/WTI spread (WTCLc1-LCOc1) widened 5.0 cents to

settle at $-0.05.

(Reporting by Catherine Ngai in New York; Editing by Matthew

Lewis)