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TUCSON - The National Weather Service has issued a Heat Advisory for the Tucson metro area, central & western Pima County and southern Pinal County today. This Heat Advisory is in effect from 1 PM until 6 PM this evening.

According to News 4 Meteorologist Jeff Beamish, high temps in the advisory area will be in the 108-114 degree range. Today's forecast high of 109 degrees in Tucson would break the record high for this date, which is 106 set back in 1996.

There is a slight chance of isolated thunderstorms today, putting our exclusive Monsoon Prediction Index at a 2 out of 10. This value indicates a low risk of severe weather.

High pressure centered over southeastern Arizona begins to shift eastward as the week goes on. As a result, Monsoon moisture increases and temps slowly decrease. Expect a daily round of thunderstorms over the next 7 days, with Wednesday being the best chance of seeing storms. High temps by week's end drop to the upper 90's.

For a complete look at Jeff's True View 4 extended forecast, visit KVOA.com/weather. Text MONSOON to 95990 for daily forecast updates and severe weather alerts directly to your cell phone.

Click here for Jeff's latest "Sunday Weather Journal" on his blog, which features more on today's record heat & timelapse video of Saturday's Phoenix haboob.