National Weather Service United States Department of Commerce

Detroit/Pontiac, MI

Weather Forecast Office

Southeast Michigan Heat

Weather.gov > Detroit/Pontiac, MI > Southeast Michigan Heat

5 Day Max Heat Index Forecast For Southeast Michigan

 

Global Wet Bulb (Heat Stress) Temperature Forecasts

 

This series of maps shows the probability (that is, the likelihood) that snowfall will equal or exceed specific amounts during the time period shown on the graphic. These forecasts are based on many computer model simulations of possible snowfall totals.
 
For the city of Detroit and vicinity; visit weather.gov/detroit/detroitheat
 
 
Hover over thumbnails below to scroll through images or click each image to view a larger image.

 

Day 1 Max Heat Index

>=0.1"
>=0.1"

 

Day 2 Max Heat Index

>=1"
>=1"

 

Day 3 Max Heat Index

>=2"
>=2"

 

Day 4 Max Heat Index

>=4"
>=4"

 

Day 5 Max Heat Index

>=6"
>=6"

 

 

 

Experimental NWS Heat Risk

 

 

The NWS HeatRisk is an experimental color-numeric-based index that provides a forecast risk of heat-related impacts to occur over a 24-hour period.

For more southeast Michigan HeatRisk forecasts, (click here)

 

  • Forecast maximum heat risk data are available for the next 7 days.

 

  • To view each 24-hour period's data on the large map, click on the specific day you're interested in within the table located in the top-left corner of the page. the day of the week you've selected will turn blue, emphasising which day of the week you're viewing data for.

 

  • For location specific information, click on the location of interest on the map. A pop-up window will show you the NWS forecast and forecast heat risk for each 24-hour period. 

              

 

 

Current City of Flint Observation (Updated Hourly)

 

Latest 48 Hour Forecast For The City of Flint

for a more detailed forecast click here

 

Current City of Saginaw Observation (Updated Hourly)

 

Latest 48 Hour Forecast For The City of Saginaw

for a more detailed forecast click here

Current City of Pontiac Observation (Updated Hourly)

 

Latest 48 Hour Forecast For The City of Pontiac

for a more detailed forecast click here

 

 

Hazards

 

This section highlights additional weather hazards that may lead to widespread power outages, further increasing the impacts of heat-related stress illnesses.
 
 
Additional weather information (including if heat headlines are in effect) can be found via the latest Weather Story
 
 
 
Hover over thumbnails below to scroll through images or click each image to view a larger image.

 

Today's Severe Weather Risk

>=0.1"
>=0.1"

 

Tomorrow's Severe Weather Risk

>=1"
>=1"

 

Day 3 Severe Weather Risk

>=2"
>=2"

Long Range Heat Forecasts - Temperature Outlooks

 

Experimental Probabilistic Heat Index Guidance Days 5-7
 
Hover over thumbnails below to scroll through images or click each image to view a larger image.

 

Day 5 Chance of Heat Index Values of at Least 95 F

>=0.1"
>=0.1"

 

Day 6 Chance of Heat Index Values of at Least 95 F

>=1"
>=1"

 

Day 5 Chance of Heat Index Values of at Least 100 F

>=2"
>=2"

 

Day 6 Chance of Heat Index Values of at Least 100 F

>=4"
>=4"

 

Day 7 Potential Max Heat Index Values 

>=6"
>=6"

Additional probabilistic heat index guidance can be found here

 Climate Prediction Center Guidance

(NOTE: the guidance below is meant for planning purposes only)

 
Hover over thumbnails below to scroll through images or click each image to view a larger image.

 

Next Week's Risk of Hazardous Temperatures Days

>=0.1"
>=0.1"

 

Weeks 3-4 Temperature Outlook

>=1"
>=1"

Heat.gov Portal

 

Heat.gov is the web portal for the National Integrated Heat Health Information System (NIHHIS)

 

Heat.gov Information (click here)

Week-2 Global Probabilistic Extremes Forecast Tool (click here)

Info on Urban Heat Islands (click here)

 

 

Additional Resources

 

                            

Heat Index Calculator

 

  
 

 

 



 

 

Heat Definitions

Heat Wave: At least 3 consecutive days with high temperatures of at least 90 degrees.

Heat Index: An estimate of how it feels when air temperature and humidity are combined.

Heat Advisory: Issued when the heat index is forecast to approach or reach 100 degrees F for 3 hours or more. Color coding is llll

Excessive Heat Warning: Issued when the heat index is forecast to approach or exceed 105 degrees F for 3 hours or more. Color coding is llll

NOTE: Often times, NWS Detroit will be more liberal with heat headlines as other heat stress indicators are taken into consideration.

 

HeatHeat Safety (click here)

Red Cross Information (click here)

Frequently Asked Questions About Extreme Heat (click here)
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