(Updates to 11:04 EDT)

By Stephen Culp

NEW YORK, April 19 (Reuters) - U.S. stocks were mixed on

Friday and Treasury yields dipped on lackluster earnings and

uncertainties surrounding central bank policy and geopolitical

strife.

Gold and crude prices advanced as market participants kept

an uneasy eye on unfolding events in the Middle East.

Of the three major U.S. equity indexes, the Dow was only one

firmer. The Nasdaq fell more than the S&P 500, weighed down by

megacap tech and tech-related momentum stocks.

The S&P and the Dow were on track for their third straight

weekly percentage loss, while the Nasdaq appeared to be headed

for its fourth consecutive down week.

"The market lacks conviction in either direction," said

Michael Green, chief strategist at Simplify Asset Management in

Philadelphia. "There's confusion about how the overall health of

the economy."

While first-quarter reporting season is still in its early

stages, expectations have dimmed. Analysts now see aggregate S&P

500 earnings growth of 2.9% year-on-year, down from the 5.1%

estimate as of April 1, according to LSEG.

"Earnings reports so far are very much a mixed bag," Green

added. "Most companies are reporting relatively lackluster

results and guidance that is somewhat mixed."

Chicago Federal Reserve President Austan Goolsbee said on

Friday that the Fed's restrictive policy is "appropriate" given

economic strength and the slower-than-expected process of

bringing inflation down closer to its 2% target.

"The Fed is, like the rest of us, somewhat struggling with

the conflicting data," Green said. "Goolsbee generally tends to

be a fiscal dove."

Mounting tensions in the Middle East appeared to plateau

after Tehran downplayed Israel's retaliatory drone strike

against Iran, a move that seemed geared toward averting regional

escalation of the war.

The Dow Jones Industrial Average rose 137.44 points,

or 0.36%, to 37,912.82, the S&P 500 lost 16.07 points, or

0.32%, to 4,995.05 and the Nasdaq Composite dropped

151.86 points, or 0.97%, to 15,449.64.

European shares dipped to their lowest level in more than a

month as the prospect of Mideast turmoil escalating spooked

investors, despite some upbeat earnings results.

The pan-European STOXX 600 index lost 0.13% and

MSCI's gauge of stocks across the globe shed

0.45%.

Emerging market stocks lost 1.34%. MSCI's broadest index of

Asia-Pacific shares outside Japan closed 1.59%

lower, while Japan's Nikkei lost 2.66%.

Treasury yields inched lower on easing jitters over a

potential broadening of the Middle East conflict.

Benchmark 10-year notes last rose 8/32 in price

to yield 4.6166%, from 4.647% late on Thursday.

The 30-year bond last rose 14/32 in price to

yield 4.7158%, from 4.745% late on Thursday.

The dollar lost ground as currency markets calmed down after

a flight to the Swiss Franc and the yen in

the wake of Israel's drone attack on Iran.

The dollar index fell 0.22%, with the euro up

0.23% to $1.0667.

The Japanese yen strengthened 0.05% versus the greenback at

154.59 per dollar. Sterling was last trading at $1.2429,

down 0.05% on the day.

Crude oil prices dipped earlier as supply concerns eased in

the wake of Iran's subdued response, but had recently reversed

course.

U.S. crude rose 0.81% to $83.40 per barrel and Brent

was last at $87.57, up 0.53% on the day.

Gold advanced, putting the safe-haven metal on track for its

fifth straight weekly gain.

Spot gold added 0.7% to $2,393.60 an ounce.