Dan Greenhaus, chief strategist at BTIG, called the drop in growth "backward looking."
"We knew that weather dramatically impacted growth in the first quarter, and we fully expect a bounce back in the second quarter," he said in a note to clients.
Indeed, there are a number of recent signs pointing toward a strengthening economy. The government released a separate report Thursday that showed applications for unemployment benefits, a proxy for layoffs, fell by 27,000 last week to 300,000. The result is nearly a seven-year low.
Ian Shepherdson, chief economist at Pantheon Macroeconomics, said that the big drop in unemployment benefit applications was more significant than the latest GDP figure because "it strongly supports the idea that the labor market conditions are improving markedly, despite the weak headline growth during the winter."
Other analysts noted that consumer spending, which accounts for 70 percent of economic activity, was very strong in the first quarter, growing at an upwardly revised 3.1 percent annual rate.
The White House, which is counting on a strong economy to lift Democratic fortunes in the fall elections, stressed that first quarter activity had been held back by temporary factors and that the economy was poised to rebound strongly.
"The first quarter of 2014 was marked by unusually severe winter weather, including record cold temperatures and snowstorms," said Jason Furman, chairman of the president's Council of Economic Advisors.
The report Thursday was the government's second look at first quarter GDP, the country's total output of goods and services.
The data primarily reflected a sharp slowdown in businesses stockpiling, which subtracted 1.6 percentage points from growth, a full percentage point more than the initial estimate. Analysts noted that the weaker inventory figure would likely translate into more restocking and stronger growth in the second quarter.
The trade deficit was slightly larger than previously thought. Business investment in structures fell at an annual rate of 7.5 percent in the first quarter, also worse than the initial estimate.
The 1 percent decline in the first quarter was only the second negative quarterly GDP reading since the current recovery began in June 2009. In the fourth quarter, the overall economy had grown at an annual rate of 2.6 percent.
While one definition of a recession is two consecutive quarters of contraction in GDP, there is no concern that a negative reading in the first quarter is a sign the economy is about to topple into a downturn. The widespread belief among analysts is that the weakness in the first quarter was based on a variety of temporary factors that will be quickly reversed once the weather warms up.
Many economists estimate that GDP will post a sizable rebound to growth of around 3.8 percent in the current April-June quarter, fueled by pent-up demand. Analysts are also optimistic that growth will remain above 3 percent in the second half of this year, giving the economy the kind of momentum that has been lacking for much of the first five years of recovery from the country's worst recession since the 1930s.
If growth does pick up, that should promote stronger hiring and help drive the unemployment rate down further. In May, employers added 288,000 jobs in the biggest hiring surge in two years. That helped push the unemployment rate down to 6.3 percent, its lowest point since 2008.
The economy is facing fewer hurdles this year than last year, when government spending cuts and higher taxes trimmed growth by an estimated 1.5 percentage points.
A government budget truce has also lifted, at least through the rest of this year, much of the uncertainty that had been weighing on the economy over the potential threats of further government shutdowns or market-rattling battles over raising the government's borrowing limit.