Small update to README

diff --git a/README.md b/README.md
index 95f051ec42d35401ade6f81dc7051612569da2ef..ed40451a082c6054c4ace04b2d96fa036e120fc6 100644 (file)
--- a/README.md
+++ b/README.md
@@ -206,6 +206,11 @@ There are two features which will cause the program to expand the time
 range of fetched data from three to 24 hours. Please be aware of this
 expansion as it may cause a rise in data/API usage.
 
+**NOTE: Only MesoWest stations have the benefit of wind averaging and
+        HN24 calculation at this time, because generally NRCS SNOTEL
+               stations do not provide wind data. HN24 support for NRCS SNOTEL
+               is planned.
+
 ### Wind mode
 If you go to submit a Wx observation in InfoEx at e.g. 05:05, and have
 so configured InfoEx, it will take the wind speed, wind gust speed, and