WASHINGTON — Factories heated up last month, unexpectedly posting their biggest output gains since last summer and helping overall industrial production reverse a weather-related January decline, the Federal Reserve said Monday.
Manufacturing output surged 0.8% in February, nearly wiping out a 0.9% drop the previous month that the Fed said resulted from extreme winter weather that hit much of the country.
The jump was the largest since August and exceeded analyst expectations for a 0.3% increase. Auto factories were a big factor in the rise, with output of motor vehicles and parts increasing 4.8% last month after dropping 5.2% in January.
The report was another indication that economic growth was picking up again after being stalled by bitter cold and snow this winter.
"The rebound in production in February is further proof ... that the softness in the data in late 2013 and early 2014 was due primarily to the weather," said Stuart Hoffman, chief economist at PNC Bank.
Factories are a major component of industrial production, which includes output from mines and power plants.
That overall production also rose sharply, up 0.6% last month after declining a revised 0.2% in January. Economists had projected a 0.3% increase in February.
Output from electric and gas utilities dropped 0.2% after a 3.8% increase in January "but remained elevated because of the strong demand for heating due to the unusually cold weather," the Fed said.
The Fed said much of the big swing in output reflected the impact of the weather, with production rates returning to "more normal levels" last month.
The industrial capacity utilization rate, which measures how close facilities are to full production, rose 0.3 percentage points last month to 78.8%. The level still was 1.3 percentage points below the 30-year average.