Heat index is the temperature felt on your body.
Mild Heat Alert: A mild heat alert will be issued for heat indexes ro temperatures between 80-90 degrees.
A mild heat alert is in effect for all of the San Fernando and Santa Clarita valleys until further notice. Temperatures will average around 84-90 degrees.
Moderate Heat Alert: A moderate heat alert will be issued for heat indexes or temperatures between 90-100 degrees.
The are no moderate heat alerts issued.
High Heat Alert: A high heat alert will be issued for heat indexes or temperatures between 100-110 degrees.
There are no high heat alerts issued.
Extreme Heat Alert: An extreme heat alert will be issued for heat indexes or temperatures between 110-115 degrees.
There are no extreme heat alerts issued.
Deadly Heat Alert: A deadly heat alert will be issued for heat indexes or temperatures of over 115 degrees.
There are no deadly heat alerts issued.