UPDATE 1-L.A. gasoline spikes 21 cts on Tesoro fire

(Updates throughout)

HOUSTON, Sept 25 (Reuters) - Gasoline in the Los Angeles wholesale market spiked upward 21 cents on Friday morning due to a fire in a coking unit at Tesoro Corp's (TSO.N) 100,000 barrel per day Los Angeles-area refinery in Wilmington, California, traders said.

Gasoline blended to meet California's strict environmental standards sold as high as 41 cents over the New York Mercantile Exchange's November RBOB gasoline contract on news of the Friday fire. Gasoline finished on Thursday at 20 cents over November RBOB.

Also supporting higher West Coast refined products prices was a shut gasoil hydrotreater at Chevron Corp's (CVX.N) 245,271 bpd San Francisco Bay-area refinery in Richmond, California, which sustained a pump fire on Thursday.

No time had been sent for completion of the repair work on the pump, said a Chevron spokesman, but the company expected to meet its customer obligations.

In the San Francisco Bay market, California gasoline was seen at 36 cents over November RBOB.

"Two fires in the Bay and L.A. sent the market screaming up today," a trader said.

Diesels and jet fuel also spiked on the fires, traders said. Ultra-low sulfur diesel was offered 7 cents higher at 9 cents over November NYMEX heating oil, while California-blend diesel climbed 6.5 cents to trade at 10 cents over November NYMEX heating oil.

Jet fuel leaped 8 cents to sell at an 11.5-cent premium on NYMEX heating oil.

Tesoro suspended open rack sales for gasoline and diesel in southern California after the fire, said spokesman Lynn Westfall.

The fire was confined to a coking unit, but other units at the refinery were running at reduced rates, Westfall said.

No injuries were reported due to the fire.

Over 150 Los Angeles firefighters battled the blaze alongside the Tesoro refinery's fire department.

Tesoro had been performing "regular" maintenance on the coker at the Los Angeles refinery this week. (Reporting by Erwin Seba; Editing by Walter Bagley)