Daily high temperatures on Tuesday, Wednesday and Thursday are forecast to be near or above the hottest they have been on any day in the past 25 years.

The National Weather Service on Sunday issued a Heat Advisory for the Mt. Shasta area warning that “temperatures will be dangerously hot Monday through at least Thursday as a strong ridge builds over the area. There will be little relief overnight with temperatures remaining much warmer than normal. Highs on Tuesday, Wednesday and Thursday will be near or above the hottest they have been on any day in the past 25 years.”

The Heat Advisory and a previously issued Excessive Heat Warning remain in effect from noon Monday, July 31, to 8 p.m. Thursday, Aug. 3.

An Excessive Heat Warning means that a prolonged period of dangerously hot temperatures will occur, according to NWS. A Heat Advisory means that a period of hot temperatures is expected.

Both the Warning and Advisory specifically list the towns of Mount Shasta, McCloud and Dunsmuir. The Warning includes Weed, Etna, Fort Jones, Yreka, and many cities in southern Oregon.

Daily high temperatures in the mountain areas are forecast to range from 95 to over 100 degrees, while daily high temperatures in valley areas are forecast to rise as high as 108 degrees.

Overnight lows are forecast to range from 64 to 75 degrees.

NWS warns that “very high temperatures with limited relief overnight will increase chances for heat related illness, especially for sensitive groups and people without access to air conditioning. Heat stress is possible for livestock and outdoor pets. Also, area rivers still run cold and fast, increasing the risk for hypothermia and water rescues."

A map of the hazard area can be seen at: www.wrh.noaa.gov/mfr/HAZARD

NWS suggests the following precautionary/preparedness actions:

• Drink plenty of fluids, stay in an air-conditioned room, and stay out of the sun.

• Check up on relatives and neighbors, as well as outdoor pets and livestock.

• Young children and pets should never be left unattended in vehicles under any circumstances. This is especially true during warm or hot weather when car interiors can reach lethal temperatures in a matter of minutes.

More information can be found at this National Weather Service web page: http://forecast.weather.gov/showsigwx.php?warnzone=CAZ082&warncounty=CAC093&firewxzone=CAZ282&local_place1=Mt%20Shasta%20CA&product1=Heat+Advisory&lat=41.3181&lon=-122.32#.WX5_sdMrJGM