Q: sea-level bar input for WL?

[Old Tele man]

Q: is "sea-level barometer" input required for WL?

As I was walked through the "Setup" procedure, the "Set Barometer" input asked for two inputs: Station Elevation in feet and Sea-level Barometer in inches. So, I entered what I knew: Station Elevation = 2330 ft. but I left the Sea-Level Barometer entry 'blank' because I didn't know what value to enter.

So-o-o-o-o, what *should* I enter there, if required, or can I leave it empty without causing problems? I'm at 2330 ft and the main weather station is located at the airport at 2641 ft about 25 miles away!

[George Richardson]

IF you have a Davis Vantage product, plug your station elevation into the console, give it a few hours settle in (actually about 24 hours) and read the barometric pressure (SLP) on the console.

FWIW, barometric pressure has such a low gradient that the airport pressure (@ 25 miles) would be very close. The problem is airports use altimeter pressure and not all report both.

Questions 

George

[beaudog]

This one should be pretty close.  

http://raws.wrh.noaa.gov/cgi-bin/roman/meso_table_mesowest.cgi?stn=KTUS&unit=0&time=LOCAL

or

http://raws.wrh.noaa.gov/cgi-bin/roman/meso_table_mesowest.cgi?stn=D7579&unit=0&time=LOCAL

You might find this usful to some extent.

http://www.softwx.com/weather/vppressurecalc.html

[dalecoy]

Q: is "sea-level barometer" input required for WL?

No.

[George Richardson]

"Sounds more like a 'crap-shoot' than a true 'scientific guess' situation."

You want Scientifically correct, http://www.starpath.com/barometers/baro_cal.php

George

[beaudog]

I don't see you on the WU map.    Are you reporting to WU?

[Old Tele man]

I don't see you on the WU map.    Are you reporting to WU?

...I am now.

[Scalphunter]

3 airports close to you report Altimeter...KRYN, KDMA,KTUS. Two of these also report SLP in their METARS,....KDMA AND KTUS

Hope you know how to read them as the info is there.

John