I'm in El Centro, CA next to a big water tank with "sea level" painted on the tank about 15 feet high.

Torque gives me a BARO reading of 14.8. I thought BARO at sea level is 14.696 +/- .

Is this measurement normal? ... if not, is it materially off?

 

Baro varies widely but a "standard" day is 29.92 inches of Mercury.
(14.69533223463184 PSI)

 

Standard atmosphere is 14.7psi, 29.92 in. Hg or 1013 millibars at mean sea level at 59*F. If temp goes up, density altitude increases. It also depends on whether there's a high or low pressure system moving through. Right now, my weather app is showing 57* and 30.2 in. Hg and rising in El Centro. This would show 14.83psi in a perfectly accurate barometer.

 

The Brad has it.

 

Thank you.

 

In addition to "sea level" you need baro correction.

You can get that from ATIS at El Centro's airport, 269.275 MHz or 26.927 MHz. There may be a call-in, but I don't have a number.

Pop