IMPORTANT! The server may go down soon - possibly permanently. Please read the latest post in Announcements and News

I strongly advise all users using my server for their web site to make alternative arrangements.

Outgoing mail is disabled because of the malware on the server. No new forum registrations are currently possible, and mail to the forum administrator will not work.

Please read the posts in the Announcements section about the current status of Cumulus development now that I have retired

Please read this post before posting

Latest Cumulus release v1.9.4 (build 1099) - Nov 28 2014
Latest Cumulus MX release - v3.0.0 build 3043 Jan 20 2017. See this post for download

Heat Index Not Matching

Discussion specific to Davis weather stations
kf7yqc
Posts: 3
Joined: Mon Sep 25, 2017 2:08 am
Weather Station: Vantage Vue
Operating System: Win 8.1

Heat Index Not Matching

Postby kf7yqc » Tue Sep 26, 2017 2:38 am

On my Davis Vantage Vue Here are the readings which match what is displayed on the console using the weatherlink software

Current Conditions
Outside Temperature: 74.9°
Outside humidity: 85%
Outside dew point: 70.1°
Wind speed: 0.0 SW
Wind chill: 74.9°
Outside heat index: 77.8°
Barometer: 29.893in and Rising Slowly
Daily rain: 0.00in
Current Rain rate: 0.00in

The problem I am having is with Cumulus, the readings are not matching for the heat index at all... is there a way to calibrate this or...?

Temperature and Humidity
Temperature 74.9 °F Dew Point 70.1 °F
Windchill 74.9 °F Humidity 85%
Heat Index 74.9 °F Apparent Temperature 82.6 °F

Any help would be great Thx

My webpage is Pineville, Louisiana WX Station

User avatar
steve
Cumulus Author
Posts: 26698
Joined: Mon Jun 02, 2008 6:49 pm
Weather Station: None
Operating System: None
Location: Vienne, France
Contact:

Re: Heat Index Not Matching

Postby steve » Tue Sep 26, 2017 9:06 am

Cumulus doesn't calculate heat index below 80F as this is correct for the formula it uses. See the wiki entry for heat index.
Steve
-----
Hosting available for Cumulus web sites. See http://sandaysoft.com/forum/viewtopic.php?f=2&t=11876

Please read the posts in the Announcements section about the current status of Cumulus development since I have retired from my day job

kf7yqc
Posts: 3
Joined: Mon Sep 25, 2017 2:08 am
Weather Station: Vantage Vue
Operating System: Win 8.1

Re: Heat Index Not Matching

Postby kf7yqc » Wed Sep 27, 2017 3:36 am

Thanks for the clarification on that Steve.


Return to “Davis VP/VP2/Vue”

Who is online

Users browsing this forum: No registered users and 3 guests