When the drought map comes out on Thursdays, our team is quick to publish it in many spots (our Storm Team 12 app, Facebook, X, website, and of course all over TV). Since we aren't getting out of drought anytime soon, I thought it was important to address a question that keeps coming up:
Why doesn't the drought map look worse when we are 9-10" below on rainfall? Or, Why doesn't the map represent my area differently?
I wish I had a good, concrete answer for this, but the latest map does leave me a little confused too. I believe the biggest reason the map doesn't show "severe" or "extreme" for south central is because our vegetation health improved a bit after the late September moisture (remember much of central and southern Kansas had .5-1"). Our evaporation rates have slowed lately because of the cooler weather, which might also explain why conditions aren't displayed differently.
Here's what we know about each drought map that is released:
- The weekly cutoff for rain is Tuesday morning (any rain on a Wed/Thu) is not considered
- It always looks back in time - it's not a forecast for anything incoming
- It almost never shows worsening drought by more than one category per week. However, conditions can improve by more than one category if enough rain falls.
- Impacts - (agriculture, wildlife, land use, etc)
- Feedback from local experts
- Physical data at different time scales - (winter vs summer, fall vs spring)
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