Earlier today, a friend asked me what this symbol (referring to an airport in Canada) on a weather depiction chart represented. I didn't know. (Full chart available here)
What does a dot inside parenthesis mean on a weather depiction chart?
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$\begingroup$ What agency produced the chart? $\endgroup$– user2168Commented May 14, 2014 at 5:33
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$\begingroup$ @Articuno - The Aviation Weather Center. I've edited in a link to the full chart. $\endgroup$– Steve V.Commented May 14, 2014 at 6:30
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$\begingroup$ Looks like its a NOAA chart. $\endgroup$– user2168Commented May 14, 2014 at 7:04
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1 Answer
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From here, $(\cdot)$ means that there is precipitation within sight, reaching the ground, not at the station, but < 5 km from the station.
$)\cdot($ means that there is precipitation within sight, reaching the ground, not at the station, but > 5km from the station.
This source and this source give similar definitions, but without a strict distance cutoff, instead just saying "distant" and "near".
I couldn't find any references to this symbol in Nav Canada's weather code and symbol legend.