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Weather Forecasting Tips

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The below table comes from the US Governments NOAA website.  It has some basic weather forecasting tips that are useful for ambient home weather stations.

Below is a general summary of wind and barometer indications in the United States. The amateur forecaster should modify the table as needed, based on his or her own observations. Barometric pressures in this table are in inches of mercury at sea level. If you use local weather reports to calibrate your instruments, you don’t have to worry about this because official measurements are converted to sea level before they are reported to the public. A general rule of thumb is that atmospheric pressure decreases by one inch of mercury for every 1,000 feet of elevation.

If the Wind is Blowing from and the Barometer is the Probable Weather is
Southwest to Northwest 30.10 to 30.20 and steady Fair with slight temperature change for one to two days
Southwest to Northwest 30.10 to 30.20 and rising rapidly Fair, followed by rain within two days
Southwest to Northwest 30.20 and above and steady Continued fair, with little temperature change
Southwest to Northwest 30.20 and above and falling slowly Slowly rising temperature and fair for two days
South to Southeast 30.10 to 30.20 and falling slowly Rain within 24 hours
South to Southeast 30.10 to 30.20 and falling rapidly Wind increasing in force, rain within 12 to 24 hours
Southeast to Northeast 30.10 to 30.20 and falling slowly Rain in 12 to 18 hours
Southeast to Northeast 30.10 to 30.20 and falling rapidly Increasing wind, and rain within 12 hours
East to Northeast 30.10 and above and falling slowly In summer: rain may not fall for several days  In winter: rain within 24 hours
East to Northeast 30.10 and above and falling rapidly In summer: rain likely within 12 to 24 hours  In winter: rain or snow, with increasing winds
Southeast to Northeast 30.00 or below and falling slowly Rain will continue one to two days
Southeast to Northeast 30.00 or below and falling rapidly Rain, with high wind, followed by clearing within 36  hours, and by colder temperatures in winter
South to Southwest 30.00 or below and rising slowly Clearing within a few hours, and fair for several days
South to East 29.80 or below and falling rapidly Severe storm soon, followed by clearing within 24  hours, and by colder temperatures in winter
East to North 29.80 or below and falling rapidly Severe northeast gale and heavy precipitation In winter: heavy snow, followed by a cold wave
Changing to West 29.80 or below and rising rapidly Clearing and colder

 

Source:  noaa.gov

Rockler

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