How many weather balloons are out there? Hundreds, it turns out - ABC News
White House says it was probably weather balloons | Boing Boing
Weather balloon - Wikipedia
GA NWS to deploy extra weather balloons ahead of next storm | 11alive.com
Amazon.com: Nballoon Professional Weather Balloon 72 inch/100g For Meteorological Investigation Aerial Video Holiday Party Decoration Entertainment Toys Huge Balloons (72 inch/100g) : Toys & Games
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NWS launches 2 weather balloons daily. Here's how you can identify them
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