No. 1. White Flag.

No. 2. Blue Flag.

No. 2. Blue Flag.

No. 3.

No. 3.

White and Blue

Flag.

No. 4.

No. 4.

Black Triangular

Flag.

No. 5.

No. 5.

White Flag with black square in center.

Explanation Of Weather Flags 174

When number 4 is placed above number 1, 2 or 3 it indicates warmer; when below, colder; when not displayed, the temperature is expected to remain about stationary. During the late spring and early fall the cold-wave flag is also used to indicate anticipated frosts.