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Old 06-23-2013, 03:59 AM
 
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Where is the thunderstorms on weather almanach of New York Central Park belvedere castle weather stations ?

Weather History for Central Park, NY | Weather Underground
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Old 06-23-2013, 06:21 AM
 
Location: South Jersey
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I've noticed some stations don't seem to report thunderstorms in the weather history on Weather Underground.
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Old 06-23-2013, 07:15 AM
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Location: Western Massachusetts
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The offical station doesn't seem to record it much.

National Weather Service Climate

Choose "Preliminary Climate Report" and Archived Data. Then a month. Column 16 makes a note for thunder with the number 3. There's less than you'd expected. Either the station doesn't carefully record every one or there's a high threshold for thunder (maybe has to be particularly close?). I don't think the weather station records more info on thunderstorms than that.
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Old 06-23-2013, 03:37 PM
 
Location: E ND & NW MN
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central park observation is from an ASOS. And there is a threshold in how close lightning is observed for when T is then carried in the observation. Sometimes too, some ASOS's may have maintenance issues and have a TSNO on the obs....thunderstorm info not available. During the winter time....there is staff (I dont recall whom) do snow meaurements...these are snow paid observers. Paid to record snow every 6 hours and snow depth.
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Old 06-23-2013, 06:28 PM
 
Location: South Jersey
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Quote:
Originally Posted by DaninEGF View Post
central park observation is from an ASOS. And there is a threshold in how close lightning is observed for when T is then carried in the observation. Sometimes too, some ASOS's may have maintenance issues and have a TSNO on the obs....thunderstorm info not available. During the winter time....there is staff (I dont recall whom) do snow meaurements...these are snow paid observers. Paid to record snow every 6 hours and snow depth.
I've always wondered about that, actually. How close exactly does lightning have to be for it to be recorded as a thunderstorm?
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Old 06-23-2013, 08:47 PM
 
Location: E ND & NW MN
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Quote:
Originally Posted by snj90 View Post
I've always wondered about that, actually. How close exactly does lightning have to be for it to be recorded as a thunderstorm?
Here is some info in regards to the ALDARS system used now for lightning/thunderstorm detection. ASOS will report TS if it detects lightning within 5 miles of the airport. Use VCTS within 5-10 miles of the airport. If there is an observer augmenting the data, they can change what ASOS gives them. I specifically dont know about the augmention of the central park ASOS site...I know must be a paid observer for snowfall. But I could be wrong.

http://ocwws.weather.gov/afp/resourc...qmt%20bltn.pdf

Dan
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