Tornado Warning: Despite Oklahoma Alert, U.S. Weather Forecasting Service Needs Major UpgradesThe atmosphere never gets a moment’s privacy. It can barely stir enough to move a leaf without some piece of high-tech equipment—often many, many pieces—knowing about it. The U.S. alone has up to 30 satellites at any one moment that devote at least part of their time to monitoring global and national weather patterns; 122 Doppler radar systems scattered across the country looking up from the ground; and a web of computers that just got a massive upgrade—increasing their data-crunching capacity 30-fold—to process the information that all that other hardware gathers.