Enter a ZIP code to get a forecast:
Setup Location

WRN Logo

GFS - SA - Rel Hum/Show - 3day

Please take our Weather website Usage Survey
Note: This survey is hosted on Survey Monkey servers. Clicking the survey link above will direct you outside our network to the Unisys-approved survey page on the Survey Monkey website. We respect your privacy in accordance with our Privacy Notice.
GFS - SA - Rel Hum/Show - 3day
Click On the Image For Full Size.

The Relative Humidity/Showalter Index chart depicts two fields: integrated relative humdity from 850 to 500 mb (in color contours) and Showalter index (in white line contours). Negative index values are shaded black.