Thanks. I am just using it for the steel gauges. From what I've read you can not use WU or NWS with the gauges.
------- Tom ________________________________ From: [email protected] on behalf of mwall <[email protected]> Sent: Thursday, January 3, 2019 13:21 To: weewx-user Subject: [weewx-user] Re: Zambretti Forecast Showing "The forecast is Fine weather" When it is Raining On Thursday, January 3, 2019 at 1:56:52 PM UTC-5, nineback wrote: I have set up up the forecast add-in and have it set up to produce NWS and Weather Underground forecast which it is doing. It is also producing a Zambretti Forecast but it ais showing "The forecast is Fine weather" for the past couple of days I have had forecast running. The weather has not been fine. It has been raining for the past couple of days. Pressure had been up and down between 30.23 to 30.06 inHG. This is the latest output from the zambretti.html file: The forecast is Fine weather Issued at 03-Jan-2019 10:55 Any ideas why I am not getting an accurate forecast? the zambretti forecast is REALLY crude. here are the comments from the code: # Zambretti Forecaster # # The zambretti forecast is based upon recent weather conditions. Supposedly # it is about 90% to 94% accurate. It is simply a table of values based upon # the current barometric pressure, pressure trend, winter/summer, and wind # direction. Apparently it is most accurate when used at 09:00 to provide # the forecast for the day. # # The forecast is generated using data from a period of time prior to 09:00. # The forecast will be the same no matter what time of day it is requested, as # long as there are data for the period prior to 09:00. A request for forecast # before 09:00 will return the previous day forecast. If the forecast has # already been generated, it will not be re-generated. # # The periods for calculating wind direction and pressure trend can be # specified via configuration file. and here are links to some history and detailed description: http://www.whitbyweather.com/index.php?p=1_56_Zambretti-Forecaster http://www.meteormetrics.com/zambretti.htm i am not sure where the 90% to 94% accurate comes from, nor is it clear exactly what that 'accuracy' is measuring. i happen to like rain, so 'fine' for a rainy day sounds good to me :) look at the function 'ZambrettiCode' in forecast.py to see exactly how the forecast is calculated. it is just a lookup table. using the data from your weewx database you could run the calculations manually to verify that the zambretti is calculated properly. m -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]<mailto:[email protected]>. For more options, visit https://groups.google.com/d/optout<https://nam03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgroups.google.com%2Fd%2Foptout&data=02%7C01%7C%7Ca2ae5b7178324101c4c308d671b0ad41%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636821400959213825&sdata=WVLWSpcv6iUuKWDKSoio1a9grGik%2BvldcyNkxScrixo%3D&reserved=0>. -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
