Excessive heat watch issued for Saturday
Heat index could reach 110 in parts of Minnesota Saturday
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Saturday could produce the highest heat index values of the hear for parts of southern Minnesota. The Twin Cities National Weather Service office is getting ahead of the game by posting an excessive heat watch Saturday for much of southern Minnesota.
Including the cities of Elk River, Cambridge, Center City, Monticello, Minneapolis, Blaine, St Paul, Stillwater, Hutchinson, Gaylord, Chanhassen, Chaska, Victoria, Shakopee, Hastings, New Ulm, St Peter, Le Sueur, Faribault, Red Wing, St James, Mankato, Waseca, Owatonna, Fairmont, Blue Earth, and Albert Lea
336 PM CDT Thu Jul 16 2020 ...EXCESSIVE HEAT WATCH IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING...
* WHAT...Dangerously hot conditions with heat index values up to 108 possible.
* WHERE...Portions of central, east central, south central and southeast Minnesota.
* WHEN...From Saturday morning through Saturday evening.
* IMPACTS...Extreme heat and humidity will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities.
Feeling like 110 degrees?
The combination of temperatures in the 90s and dew points approaching 80 degrees will drive heat index values past the 100-degree mark Saturday afternoon. A few models suggest heat index values near 110 degrees across southern Minnesota Saturday.
NOAA’s NAM model is among the most aggressive and cranks out heat index values of 110 from the western Twin Cities into southwest Minnesota Saturday afternoon.
Amazon-level dew points
The amount of moisture in air mass Saturday afternoon will rival some of the world’s most oppressive jungles. Several models crank out dew points near 80 degrees for the Twin Cities and southern Minnesota Saturday afternoon.
As dew points approach 80 degrees, the equation for heat index spikes rapidly. A temperature of 93 degrees and a dew point of 80 degrees yields an unbearably dangerous heat index of 112.
Stay cool, Minnesota.
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