The Federal Reserve said Thursday that factory production fell 0.4 percent from the previous month after rising a revised 0.7 percent in March and 1.5 percent in February. Manufacturing output has risen a solid 2.9 percent over the past year.
The decline appears to be a temporary setback that doesn't have economists too worried.
"We are not concerned by the drop in industrial production, because it was likely a one-time event" given healthy signals from other recent measures of manufacturing, said economists at Deutsche Bank Securities in a note to clients.
The Institute for Supply Management, a group of purchasing managers, has reported that U.S. manufacturing grew faster in April than March. Its manufacturing index rose to 54.9 last month from 53.7 in March as exports rose and factories stepped up hiring. Any reading above 50 signals growth.
The Commerce Department has said orders to U.S. factories for long-lasting manufactured goods showed decent gains in February and March.
Overall industrial output, which includes manufacturing, mining and utilities, fell 0.6 percent in April, the Fed said. Output at utilities plunged 5.3 percent; households used less heat as temperatures rose.
The drop in manufacturing output was more troubling, though economists say it probably just means factories eased back a bit after robust gains in February and March.
"Manufacturing was surprisingly weak, although the decline follows a strong finish" to the first quarter, said Jim O'Sullivan, chief U.S. economist at High Frequency Economics.
The economy is picking up momentum after stalling during the nasty winter. The economy expanded at an annual pace of 0.1 percent from January through March. Economists expect the pace to pick up to 3 percent or faster this quarter and for the rest of the year.
Hiring also has been healthy. U.S. employers added 238,000 jobs from February through April, the fastest three-month pace in more than two years.