...findings, the NWS has devised the “HeatIndex,” or HI. The HI, given in degrees...temperature. To find the HI on the HeatIndex Chart below, find the air temperature...relative humidity column. On the HeatIndex chart, the area above the line corresponds...
http://www.portlandonline.com/oem/index.cfm?a=196950&c=28988
...findings, the NWS has devised the “HeatIndex,” or HI. The HI, given in degrees...temperature. To find the HI on the HeatIndex Chart below, find the air temperature...relative humidity column. On the HeatIndex chart, the area above the line corresponds...
http://www.portlandonline.com/oem/index.cfm?a=196950&c=28988