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A Norumbega Almanac

WEATHER FORECAST CHART
WIND DIRECTION: BAROMETER (AIR PRESSURE) AT SEA LEVEL: EXPECTED WEATHER:
SW To NW 30.10 to 30.20, steady Fair with little temp. change for 2 days
SW To NW 30.10 to 30.20, rising fast Fair followed by precipitation in 2 days
SW To NW 30.20 or above, steady Continued fair with little temp. change
SW To NW 30.20 or above, falling slowly Slowly rising temp; fair for 2 days
S To SE 30.10 to 30.20, falling slowly Precipitation within 24 hours
S To SE 30.10 to 30.20, falling fast Increasing wind; precipitation in 12 - 24 hours
SE To NE 30.10 to 30.20, falling slowly Precipitation in 12 - 18 hours
SE To NE 30.10 to 30.20, falling fast Wind rising; precipitation within 12 hours
E To NE 30.10 or above, falling slowly Rain (snow) within 24 hours in winter
E To NE 30.10 or below, falling fast Precipitation, wind
SE To NE 30.00 or below, falling slowly Steady rain for 1 - 2 days
SE To NE 30.00 or below, falling fast Rain and high wind clearing in 36 hours
S to SW 30.00 or below, rising slowly Clearing within a few hours then fair
S to E 29.80 or below, falling fast Severe storm imminent, clearing in 24 hrs
E to N 29.80 or below, falling fast Severe northeast gale, precipitation
Going to W 29.80 or below, rising fast Clearing and colder

Source: Weather by Paul E. Lehr.