(For a live blog on the U.S. stock market, click or type LIVE/ in a news window.)
* 3M gains as mask demand surges
* Southwest posts first quarterly loss in nine years
* U.S. consumer confidence data due later in the day
* Fed to kick off two-day policy meeting
* Futures up: Dow 1.40%, S&P 500 1.25%, Nasdaq 1.12% (Adds comments, updates prices)
By C Nivedita
April 28 (Reuters) - U.S. stock index futures rose on Tuesday after a round of quarterly earnings reports brought upbeat signs from Pfizer and respiratory mask-maker 3M for investors increasingly hopeful of a relaunch of business across the economy.
3M Co, the world's biggest maker of N95 respirator masks, rose 3.4% in premarket trading after reporting better-than-expected quarterly profit, although it suspended its 2020 forecast due to the health crisis.
Drugmaker Pfizer Inc reiterated its full-year forecast and reported higher sales of its pneumonia vaccine as physicians prescribed it to prevent infections caused by the virus. Its shares gained 1.7%.
Investors are now gearing up for one of the busiest weeks for high profile tech-related earnings reports from Microsoft Corp, Google-parent Alphabet Inc, Amazon.com Inc and eBay Inc.
"This is going to be an important test for the market as lots of businesses moved online following the lockdown," said Andrea Cicione, head of strategy at TS Lombard in London.
"If these big heavyweights in the tech space don't deliver on the expectations, then of course the rally we've seen over the past few weeks (will) have to be questioned."
Wall Street has recovered more than 30% from its March lows, rescued by official stimulus efforts and, more recently, by signs states were moving to let businesses reopen after a near total halt in activity.
Still, the benchmark S&P 500 index remains more than 17% off a record high hit in February and analysts have warned of further losses if a deep global recession, as many now expect, sets in.
Consumer confidence figures for April due later in the day are expected to slide further from near three-year lows hit in March, as widespread production halts put millions of Americans out of work.
Investors are also watching a two-day Federal Reserve policy meeting that kicks off on Tuesday, although expectations are low for more central bank easing at this time.
Elsewhere, the damage from the lockdowns continued to mount, with Southwest Airlines down 2.1% after reporting its first quarterly loss in nine years due to the virtual halt in global travel.
Ford Motor Co and Starbucks Corp are among other big names reporting after markets close.
At 7:51 a.m. ET, Dow e-minis were up 336 points, or 1.4%, S&P 500 e-minis were up 35.75 points, or 1.25% and Nasdaq 100 e-minis were up 98.5 points, or 1.12%.
The CBOE volatility index, a measure of investor anxiety, fell on Tuesday and hovered near two month lows, indicating a risk-on sentiment. (Reporting by C Nivedita and Shreyashi Sanyal in Bengaluru; Editing by Patrick Graham and Sagarika Jaisinghani)