handle NCD (nil clouds detected) in METAR

diff --git a/simgear/environment/metar.cxx b/simgear/environment/metar.cxx
index 569f0261e38a3e5ffe2cb909e699f47d1296e14a..d5f2c7badaece5f58f07cdc3a2492e4f1f30a55a 100644 (file)
--- a/simgear/environment/metar.cxx
+++ b/simgear/environment/metar.cxx
@@ -767,6 +767,7 @@ bool SGMetar::scanSkyCondition()
 
        if (!strncmp(m, "CLR", i = 3)                           // clear
                        || !strncmp(m, "SKC", i = 3)            // sky clear
+                       || !strncmp(m, "NCD", i = 3)            // nil cloud detected
                        || !strncmp(m, "NSC", i = 3)            // no significant clouds
                        || !strncmp(m, "CAVOK", i = 5)) {       // ceiling and visibility OK (implies 9999)
                m += i;