Warm and humid again; thunder chance in some areas

Heat advisory for the Twin Cities metro area

Here we go again. The heat lingers.

Our average July 5 high is 83 degrees in the Twin Cities, but we’ll probably reach the lower 90s this Sunday afternoon. Sunday highs will be in the 80s in roughly the northern third of Minnesota, with lower 90s elsewhere:

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Sunday forecast highs
National Weather Service

Dew points will be in the sticky 60s, flirting with 70 degrees at times in the south:

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Sunday 1 p.m. forecast dew points
National Weather Service

Due to the combination of heat and humidity, the National Weather Service has issued a heat advisory for the Twin Cities metro area from 10 a.m. to 8 p.m. this Sunday:

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Heat advisory 10 a.m. to 8 p.m. Sunday
National Weather Service

Here are details of the heat advisory:

URGENT - WEATHER MESSAGE National Weather Service Twin Cities/Chanhassen MN 259 AM CDT Sun Jul 5 2020 MNZ060>063-068>070-051800- /O.NEW.KMPX.HT.Y.0004.200705T1500Z-200706T0100Z/ Hennepin-Anoka-Ramsey-Washington-Carver-Scott-Dakota- Including the cities of Minneapolis, Blaine, St Paul, Stillwater, Chanhassen, Chaska, Victoria, Shakopee, and Hastings 259 AM CDT Sun Jul 5 2020 ...HEAT ADVISORY IN EFFECT FROM 10 AM THIS MORNING TO 8 PM CDT THIS EVENING... * WHAT...Heat index values to around 95 expected. * WHERE...Hennepin, Anoka, Ramsey, Washington, Carver, Scott and Dakota Counties. * WHEN...From 10 AM this morning to 8 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses to occur. * ADDITIONAL DETAILS...Relatively light winds and mostly sunny skies will combine with the high heat and humidity to create a heightened risk of heat illness, particularly for those who are active outdoors. 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.

Thunder chances?

Northern Minnesota will have the best chance of occasional scattered thunderstorms today and tonight, with some chance of scattered thunderstorms in central Minnesota and northwestern Wisconsin Sunday afternoon and Sunday night. An isolated shower or thunderstorm is possible in the Twin Cities metro area, southern Minnesota and west-central Wisconsin later this afternoon and this evening.

You can hear updated weather information on the MPR network, and you’ll see updated weather info on the MPR News live weather blog.

The NWS Storm Prediction Center shows a slight risk of severe weather today and tonight in parts of northwestern Minnesota:

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Severe weather outlook Sunday and Sunday night
NWS Storm Prediction Center

Slight risk means that scattered severe thunderstorms are possible. There’s a marginal risk of severe weather today and tonight in the dark-green shaded area that covers the remainder of northern Minnesota, meaning that an isolated severe thunderstorm is possible.

This Updraft blog will be updated by around 10 a.m. with updated info on your Sunday weather and a look at the week ahead.

Programming note

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