Very hot Sunday and Labor Day; updated heat advisories

Today will be the hottest day of our heat wave.

The average Twin Cities high temperature is 77 degrees this time of year. Metro area highs are forecast to reach the upper 90s Sunday afternoon. A few spots in the metro area could touch 100 degrees. The warmest Sept. 3 high temp in Twin Cities weather records is 97 degrees, set in 1925.

Much of southern and central Minnesota, plus west-central Wisconsin, will see Sunday highs in the upper 90s, with a few spots in southern Minnesota reaching triple-digit highs:

The northern third of Minnesota will see highs ranging from the mid 80s to lower 90s.

Labor Day highs are also well into the 90s in many locations:

Cooler 80s and even a few 70s are expected Monday up along the North Shore of Lake Superior.

The heat lingers into Tuesday in many locations:

Heat advisories

A heat advisory continues today through 5 p.m. Tuesday for the Twin Cities metro area and today through 6 p.m. Tuesday for several southeastern Minnesota counties along the Mississippi River.

Heat advisories run from 1 p.m. to 7 p.m this Sunday for additional Minnesota and western Wisconsin counties:

Here are details of the heat advisory that includes the Twin Cities metro area:

URGENT - WEATHER MESSAGE National Weather Service Twin Cities/Chanhassen MN 249 AM CDT Sun Sep 3 2023 MNZ060>063-068>070-031600- /O.CON.KMPX.HT.Y.0008.000000T0000Z-230905T2200Z/ Hennepin-Anoka-Ramsey-Washington-Carver-Scott-Dakota- Including the cities of Minneapolis, Blaine, St Paul, Stillwater, Chanhassen, Chaska, Victoria, Shakopee, and Hastings 249 AM CDT Sun Sep 3 2023 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 5 PM CDT TUESDAY... * WHAT...Heat index values up to 100. * WHERE...Hennepin, Anoka, Ramsey, Washington, Carver, Scott and Dakota Counties. * WHEN...Until 5 PM CDT Tuesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses to occur. * ADDITIONAL DETAILS...The heat during the day combined with warm temperatures overnight remaining in the mid 70s will provide little recovery time from the heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1.

Here are details of the heat advisory elsewhere in Minnesota and in western Wisconsin:

MNZ043>045-049>054-056>059-064>067-073>077-082-083-WIZ014>016-023- 025-027-028-031600- /O.EXB.KMPX.HT.Y.0008.230903T1800Z-230904T0000Z/ Morrison-Mille Lacs-Kanabec-Stearns-Benton-Sherburne-Isanti- Chisago-Lac Qui Parle-Chippewa-Kandiyohi-Meeker-Wright- Yellow Medicine-Renville-McLeod-Sibley-Redwood-Brown-Nicollet- Le Sueur-Rice-Watonwan-Blue Earth-Polk-Barron-Rusk-St. Croix-Dunn- Eau Claire- Including the cities of Little Falls, Princeton, Mora, St Cloud, Sauk Rapids, Elk River, Cambridge, Center City, Madison, Montevideo, Willmar, Litchfield, Monticello, Granite Falls, Olivia, Hutchinson, Gaylord, Redwood Falls, New Ulm, St Peter, Le Sueur, Faribault, St James, Mankato, Osceola, Rice Lake, Ladysmith, Hudson, Menomonie, Chippewa Falls, and Eau Claire 249 AM CDT Sun Sep 3 2023 ...HEAT ADVISORY IN EFFECT FROM 1 PM THIS AFTERNOON TO 7 PM CDT THIS EVENING... * WHAT...Heat index values up to 100 expected. * WHERE...Portions of central, east central, south central, southwest and west central Minnesota and northwest and west central Wisconsin. * WHEN...From 1 PM this afternoon to 7 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses to occur. * ADDITIONAL DETAILS...Wet bulb globe temperatures of 85 to 87 suggest taking 20 minutes of rest for every 1 hour of activity in this heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1.

You can hear updated weather information for Minnesota and western Wisconsin on the MPR News network. 

You can check these National Weather Service sites for updated weather info: Twin Cities, Duluth, La Crosse, Wis., Sioux Falls, S.D., and Grand Forks, N.D.

Programming note

You can hear my live weather updates on MPR News at 7:35 a.m., 9:35 a.m. and 4:39 p.m. each Saturday and Sunday.