As a real novice, please help me read my weather program Cumulus,:
1. Windrun: What period is this measured, when does it start, is it cumulative?
2. Data for last hour, is it the hour immediatly preseeding the readind?
3. Data for month. Is it a Calendar month.
4. Data for the day, does this start at 0900 hrs?
That's just a start Thanks for your attention. Mac
Reading weather programs
Forum rules
These topics are a read-only archive and may be subject to out-of-date information.
For today's weather discussion head to: New Zealand Weather & Climate
These topics are a read-only archive and may be subject to out-of-date information.
For today's weather discussion head to: New Zealand Weather & Climate
- David
- Posts: 7606
- Joined: Sat 18/08/2007 21:02
- Location: Howick, Auckland
- Has thanked: 427 times
- Been thanked: 837 times
- Contact:
Re: Reading weather programs
Welcome
1. Windrun is a daily value, and yes it is cumulative. It starts at the daily reset time you have set.
2. Not too sure what exactly you are asking here
3. Yes the monthly data is based on calendar months.
4. 0900 hrs is the official NZ reset time. Some use midnight reset. You can view/change daily reset time by going into Configuration > Station using the menus.
1. Windrun is a daily value, and yes it is cumulative. It starts at the daily reset time you have set.
2. Not too sure what exactly you are asking here
3. Yes the monthly data is based on calendar months.
4. 0900 hrs is the official NZ reset time. Some use midnight reset. You can view/change daily reset time by going into Configuration > Station using the menus.
-
- Posts: 12305
- Joined: Mon 10/03/2003 16:30
- Location: West Coast Road, Manukau Peninsula, North Island
- Has thanked: 0
- Been thanked: 0
- Contact:
Re: Reading weather programs
for 2, the question is, is the last hour wind run viewed at say 30 minutes past the hour include that 30 minutes since the top of the hour (and the 30 minutes prior to the top of the hour)
- Michael
- Posts: 7210
- Joined: Thu 27/03/2003 12:04
- Location: Rainy Manurewa, Auckland - "City of Gales"
- Has thanked: 0
- Been thanked: 1 time
- Contact:
Re: Reading weather programs
The metservice seems to use 6pm for their data especially the sunshine,Windrun doesnt mean a lot to me,gusts and average speeds do.I think the maximum gust is for the day and average for the hour,what I read on weatherdisplay anyway.
- Nev
- Moderator
- Posts: 6270
- Joined: Tue 07/03/2006 15:24
- Location: Waiheke Island, Hauraki Gulf
- Has thanked: 484 times
- Been thanked: 1121 times
Re: Reading weather programs
Re Q2: A calendar-month ends on the last day at midnight. A meteorological-month ends at 9am on the 1st of the following month.
The meteorological day (and month) has been in use for up to a 100 years along with the practice of placing some daily observations, such as max-temps, rainfall, wind-run data, back one day.
Exceptions being data supplied to the media. In order to meet print deadlines, morning newspapers generally have a cut-off time of 6pm the previous day (consequently, daily sunshine data is usually delayed by a day). The day's 'TV-temps' on the evening news have a cut-off time of 4pm.
The meteorological day (and month) has been in use for up to a 100 years along with the practice of placing some daily observations, such as max-temps, rainfall, wind-run data, back one day.
Exceptions being data supplied to the media. In order to meet print deadlines, morning newspapers generally have a cut-off time of 6pm the previous day (consequently, daily sunshine data is usually delayed by a day). The day's 'TV-temps' on the evening news have a cut-off time of 4pm.
- Tornado Tim
- Moderator
- Posts: 4920
- Joined: Sun 19/10/2008 17:17
- Location: Raglan, Waikato / Hillcrest, Hamilton
- Has thanked: 102 times
- Been thanked: 202 times
- Contact:
Re: Reading weather programs
For peoples reference, the U.S and Canada and other counties do not follow this rule, Australia and New Zealand seem to be the odd one out using a 9 AM reset.Nev wrote: A meteorological-month ends at 9am on the 1st of the following month.
The meteorological day (and month) has been in use for up to a 100 years along with the practice of placing some daily observations, such as max-temps, rainfall, wind-run data, back one day.
I personally dont use a 9 AM reset as the day ends and new one begins at midnight (not 9AM). Most software nowadays (not sure about cumulus) can readout a 9AM reset reading and a midnight reset reading so you can conform to both standard reset times.
NZAPStrike.net - NZ Aus Pacific Strike Network
-
- Posts: 12305
- Joined: Mon 10/03/2003 16:30
- Location: West Coast Road, Manukau Peninsula, North Island
- Has thanked: 0
- Been thanked: 0
- Contact:
Re: Reading weather programs
australia is different again re rain re 9am reset re change of the month
(midnight is used for the change in the month one time)
(midnight is used for the change in the month one time)
-
- Posts: 18591
- Joined: Wed 12/03/2003 22:08
- Location: Raukapuka Geraldine
- Has thanked: 1791 times
- Been thanked: 1433 times