timeline of harvey

Thursday, August 17th
​The National Hurricane Center issues advisories on Tropical Depression #9. By noon it is a tropical storm named Harvey.

Friday, August 18th​
Harvey passed over the Windward Islands but with a max wind speed of only 40 mph. It was unclear where it would end up. No one could have known that the 19 trillion gallons of water that would soon fall over Texas.​

Trop Strm Harvey wl track westward across Caribbean this weekend. Next week could cont wwd ovr land or turn NW into Srn Gulf. Stay tuned. pic.twitter.com/M9TE1rXCuR

— NWS Houston (@NWSHouston) August 18, 2017

Saturday, August 19th
​Harvey weakens and is only a “tropical wave,” which is even less than a tropical depression. Weather forecasters determine that there was only a “low chance” of regeneration.

What was Harvey is now no more. It's a goner. Could regenerate later but very low chance. #KHOU11 pic.twitter.com/NYVx3O3dZb

— Houston Weather (@KHOUweather) August 20, 2017

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