Wind speeds were fairly light (~4 m/s; Fig. 10.5) during the event and the forecasts
nicely matched the observations, even during a period of sharp increase after the
precipitation ended. Visibility forecasts were also quite good during the period of
rainfall, but after the precipitation ended, fog was present and held the observed visibility
down (Fig. 10.6). The RWFS did not capture the low visibility associated with the fog.
Wind Speed Comparison for Jan 16, 2004
14
AMW METAR OB
AMW METAR wFSL
AMW OB
AMW METAR woFSL
AMW RWIS OB
12
AMW RWIS wFSL
AMW RWIS woFSL
10
8
6
4
2
0
12 14 16 18 20 22 0 2 4 6 8 10 12 14 16 18 20 22 0 2 4 6 8 10 12
Jan 17, 2004 Time (UTC)
Jan 18, 2004
Fig. 10.5. Same as Fig. 10.4, except for wind speed (m/s).
29
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