Intense Heat and Humidity, August 2, 2022

Tuesday August 2nd was already hot and muggy across much of southern and central Minnesota, but a brief surge in humidity during the very late afternoon and early evening pushed dew point temperatures 2-5 degrees F higher. As a result, even though the daily high temperature had already been reached across most of the area, heat index values continued rising and peaked between 5 and 8 PM at many locations. With air temperatures still in the lower to mid-90s F and dew point temperatures in the mid to upper 70s F, heat index values soared into the 105 to 115 F range, with the high value of 115 F recorded at Hutchinson.

Heat Index values of 100 F or higher can be expected most years in southern and central Minnesota, and sometimes occur multiple times per year . Values into the 110s F, however, are far less common, and generally occur only every few to several years. The last widespread occurrence of these values was in July of 2019, during an event that was a bit more intense than this one, with temperatures in the mid-90s and dew points around 80 F.

The National Weather Service in Chanhassen has provided the following summaries of maximum Heat Index values from Tuesday evening in southern and central Minnesota. The values are provided in ranked order, and also by county.

 

Public Information Statement
National Weather Service Twin Cities/Chanhassen MN
854 PM CDT Tue Aug 2 2022

...MAXIMUM HEAT INDEX REPORTS TUESDAY...

Location                     Heat Idx. Time/Date       Provider
Hutchinson AP                115 F     0455 PM 08/02   AWOS
Rockford                     113 F     0630 PM 08/02   MESOWEST
Madison AP                   113 F     0615 PM 08/02   AWOS
Redwood Falls AP             113 F     0653 PM 08/02   ASOS
Glencoe AP                   112 F     0535 PM 08/02   AWOS
Buffalo AP                   111 F     0655 PM 08/02   AWOS
Granite Falls AP             111 F     0655 PM 08/02   AWOS
1 W Becker                   110 F     0655 PM 08/02   NDAWN
Hanover                      110 F     0650 PM 08/02   MESOWEST
Saint Bonifacius             110 F     0639 PM 08/02   MESOWEST
Falcon Heights               110 F     0711 PM 08/02   MESOWEST
Blaine                       110 F     0710 PM 08/02   MESOWEST
Princeton AP                 110 F     0735 PM 08/02   AWOS
Santiago 3E                  109 F     0520 PM 08/02   RAWS
Chanhassen NWS               109 F     0650 PM 08/02   MESOWEST
Msp Airport                  109 F     0710 PM 08/02   MESOWEST
Minnetonka                   109 F     0630 PM 08/02   MESOWEST
Dayton                       109 F     0639 PM 08/02   MESOWEST
Cambridge AP                 109 F     0435 PM 08/02   AWOS
Medina                       108 F     0650 PM 08/02   MESOWEST
Minnetrista                  108 F     0700 PM 08/02   MESOWEST
Fridley                      108 F     0710 PM 08/02   MESOWEST
Edina                        108 F     0700 PM 08/02   MESOWEST
Bloomington                  108 F     0640 PM 08/02   MESOWEST
Corcoran                     108 F     0700 PM 08/02   MESOWEST
Fairmont AP                  108 F     0356 PM 08/02   AWOS
Mankato AP                   108 F     0456 PM 08/02   AWOS
2 SE Royalton                107 F     0530 PM 08/02   NDAWN
Plymouth                     107 F     0710 PM 08/02   MESOWEST
Hopkins                      107 F     0640 PM 08/02   MESOWEST
Blaine AP                    107 F     0650 PM 08/02   AWOS
Eden Prairie AP              107 F     0653 PM 08/02   ASOS
Litchfield AP                107 F     0515 PM 08/02   AWOS
Crystal AP                   107 F     0653 PM 08/02   ASOS
Montevideo AP                107 F     0415 PM 08/02   AWOS
Osceola AP                   107 F     0655 PM 08/02   AWOS
New Ulm AP                   107 F     0515 PM 08/02   AWOS
Litchfield 3S                107 F     0511 PM 08/02   RAWS
Olivia AP                    106 F     0715 PM 08/02   AWOS
St. Cloud AP                 106 F     0453 PM 08/02   ASOS
Carver 3S                    106 F     0649 PM 08/02   RAWS
5 WSW Genola                 105 F     0545 PM 08/02   NDAWN
Maple Grove                  105 F     0740 PM 08/02   MESOWEST
Orono                        105 F     0650 PM 08/02   MESOWEST
Greenfield                   105 F     0700 PM 08/02   MESOWEST
Rosemount                    105 F     0630 PM 08/02   MESOWEST
Willmar AP                   105 F     0715 PM 08/02   AWOS
St. James AP                 105 F     0415 PM 08/02   AWOS
Maple Lake AP                105 F     0542 PM 08/02   ASOS
St. Paul Dwtn AP             105 F     0653 PM 08/02   ASOS
7 SE Onamia Mns No. 1        105 F     0636 PM 08/02   RAWS
Wyoming 6WSW                 104 F     0506 PM 08/02   RAWS
Appleton AP                  104 F     0513 PM 08/02   AWOS
Albert Lea AP                103 F     0535 PM 08/02   AWOS
Canby AP                     103 F     0302 PM 08/02   AWOS
Glenwood AP                  103 F     0535 PM 08/02   AWOS
Mora AP                      103 F     0655 PM 08/02   AWOS
Owatonna AP                  103 F     0453 PM 08/02   AWOS
Paynesville AP               103 F     0255 PM 08/02   AWOS
Little Falls 2SSE            103 F     0507 PM 08/02   RAWS
Benson AP                    102 F     0617 PM 08/02   AWOS
Sauk Centre AP               102 F     0515 PM 08/02   AWOS
Faribault AP                 102 F     0535 PM 08/02   AWOS
Little Falls AP              102 F     0535 PM 08/02   AWOS
South St. Paul AP            102 F     0535 PM 08/02   AWOS
Stanton AP                   102 F     0535 PM 08/02   AWOS
2 NW Browerville             101 F     0515 PM 08/02   NDAWN
Westport                     100 F     0500 PM 08/02   NDAWN
Mora 1ENE                    100 F     0808 PM 08/02   RAWS
Long Prairie AP              100 F     0435 PM 08/02   AWOS
Waseca AP                    100 F     0635 PM 08/02   AWOS
Alexandria MN ASOS           100 F     0453 PM 08/02   ASOS
Lakeville AP                 100 F     0615 PM 08/02   AWOS
Red Wing AP                   99 F     0535 PM 08/02   AWOS
Camp Ripley                   99 F     0656 PM 08/02   AWOS
Lake Elmo AP                  98 F     0755 PM 08/02   AWOS
Eau Claire AP                 98 F     0456 PM 08/02   ASOS
Menomonie AP                  98 F     0535 PM 08/02   AWOS
Morris AP                     98 F     0715 PM 08/02   AWOS
Rush City AP                  98 F     0635 PM 08/02   ASOS
Star Prairie                  98 F     0508 PM 08/02   RAWS
New Richmond AP               96 F     0655 PM 08/02   AWOS
Camp Ripley                   96 F     0256 PM 08/02   AWOS
Chetek AP                     95 F     0515 PM 08/02   AWOS
Ganoe Hill                    95 F     0507 PM 08/02   RAWS
Rice Lake AP                  94 F     0715 PM 08/02   AWOS
Augusta 1NW                   93 F     0505 PM 08/02   RAWS
Cumberland AP                 90 F     0655 PM 08/02   AWOS
Tony AP                       88 F     0755 PM 08/02   AWOS
Ladysmith 2SW                 87 F     0805 PM 08/02   RAWS


...MAXIMUM HEAT INDEX REPORTS BY COUNTY...

Location                     Heat Idx. Time/Date       Provider

...Minnesota...

...Anoka County...
Blaine                       110 F     0710 PM 08/02   MESOWEST
Fridley                      108 F     0710 PM 08/02   MESOWEST
Blaine AP                    107 F     0650 PM 08/02   AWOS
Wyoming 6WSW                 104 F     0506 PM 08/02   RAWS

...Benton County...
2 SE Royalton                107 F     0530 PM 08/02   NDAWN

...Blue Earth County...
Mankato AP                   108 F     0456 PM 08/02   AWOS

...Brown County...
New Ulm AP                   107 F     0515 PM 08/02   AWOS

...Carver County...
Chanhassen NWS               109 F     0650 PM 08/02   MESOWEST
Carver 3S                    106 F     0649 PM 08/02   RAWS

...Chippewa County...
Montevideo AP                107 F     0415 PM 08/02   AWOS

...Chisago County...
Rush City AP                  98 F     0635 PM 08/02   ASOS

...Dakota County...
Rosemount                    105 F     0630 PM 08/02   MESOWEST
South St. Paul AP            102 F     0535 PM 08/02   AWOS
Lakeville AP                 100 F     0615 PM 08/02   AWOS

...Douglas County...
Alexandria MN ASOS           100 F     0453 PM 08/02   ASOS

...Freeborn County...
Albert Lea AP                103 F     0535 PM 08/02   AWOS

...Goodhue County...
Stanton AP                   102 F     0535 PM 08/02   AWOS

...Hennepin County...
Hanover                      110 F     0650 PM 08/02   MESOWEST
Saint Bonifacius             110 F     0639 PM 08/02   MESOWEST
Msp Airport                  109 F     0710 PM 08/02   MESOWEST
Minnetonka                   109 F     0630 PM 08/02   MESOWEST
Dayton                       109 F     0639 PM 08/02   MESOWEST
Medina                       108 F     0650 PM 08/02   MESOWEST
Minnetrista                  108 F     0700 PM 08/02   MESOWEST
Edina                        108 F     0700 PM 08/02   MESOWEST
Bloomington                  108 F     0640 PM 08/02   MESOWEST
Corcoran                     108 F     0700 PM 08/02   MESOWEST
Plymouth                     107 F     0710 PM 08/02   MESOWEST
Hopkins                      107 F     0640 PM 08/02   MESOWEST
Eden Prairie AP              107 F     0653 PM 08/02   ASOS
Crystal AP                   107 F     0653 PM 08/02   ASOS
Maple Grove                  105 F     0740 PM 08/02   MESOWEST
Orono                        105 F     0650 PM 08/02   MESOWEST

...Isanti County...
Cambridge AP                 109 F     0435 PM 08/02   AWOS

...Kanabec County...
Mora AP                      103 F     0655 PM 08/02   AWOS
Mora 1ENE                    100 F     0808 PM 08/02   RAWS

...Kandiyohi County...
Willmar AP                   105 F     0715 PM 08/02   AWOS

...Lac qui Parle County...
Madison AP                   113 F     0615 PM 08/02   AWOS

...Martin County...
Fairmont AP                  108 F     0356 PM 08/02   AWOS

...McLeod County...
Hutchinson AP                115 F     0455 PM 08/02   AWOS
Glencoe AP                   112 F     0535 PM 08/02   AWOS

...Meeker County...
Litchfield AP                107 F     0515 PM 08/02   AWOS
Litchfield 3S                107 F     0511 PM 08/02   RAWS

...Mille Lacs County...
Princeton AP                 110 F     0735 PM 08/02   AWOS
7 SE Onamia Mns No. 1        105 F     0636 PM 08/02   RAWS

...Morrison County...
5 WSW Genola                 105 F     0545 PM 08/02   NDAWN
Little Falls 2SSE            103 F     0507 PM 08/02   RAWS
Little Falls AP              102 F     0535 PM 08/02   AWOS
Camp Ripley                   99 F     0656 PM 08/02   AWOS
Camp Ripley                   96 F     0256 PM 08/02   AWOS

...Pope County...
Glenwood AP                  103 F     0535 PM 08/02   AWOS
Westport                     100 F     0500 PM 08/02   NDAWN

...Ramsey County...
Falcon Heights               110 F     0711 PM 08/02   MESOWEST
St. Paul Dwtn AP             105 F     0653 PM 08/02   ASOS

...Redwood County...
Redwood Falls AP             113 F     0653 PM 08/02   ASOS

...Renville County...
Olivia AP                    106 F     0715 PM 08/02   AWOS

...Rice County...
Faribault AP                 102 F     0535 PM 08/02   AWOS

...Sherburne County...
1 W Becker                   110 F     0655 PM 08/02   NDAWN
Santiago 3E                  109 F     0520 PM 08/02   RAWS
St. Cloud AP                 106 F     0453 PM 08/02   ASOS

...Stearns County...
Paynesville AP               103 F     0255 PM 08/02   AWOS
Sauk Centre AP               102 F     0515 PM 08/02   AWOS

...Steele County...
Owatonna AP                  103 F     0453 PM 08/02   AWOS

...Stevens County...
Morris AP                     98 F     0715 PM 08/02   AWOS

...Swift County...
Appleton AP                  104 F     0513 PM 08/02   AWOS
Benson AP                    102 F     0617 PM 08/02   AWOS

...Todd County...
2 NW Browerville             101 F     0515 PM 08/02   NDAWN
Long Prairie AP              100 F     0435 PM 08/02   AWOS

...Waseca County...
Waseca AP                    100 F     0635 PM 08/02   AWOS

...Washington County...
Lake Elmo AP                  98 F     0755 PM 08/02   AWOS

...Watonwan County...
St. James AP                 105 F     0415 PM 08/02   AWOS

...Wright County...
Rockford                     113 F     0630 PM 08/02   MESOWEST
Buffalo AP                   111 F     0655 PM 08/02   AWOS
Greenfield                   105 F     0700 PM 08/02   MESOWEST
Maple Lake AP                105 F     0542 PM 08/02   ASOS

...Yellow Medicine County...
Granite Falls AP             111 F     0655 PM 08/02   AWOS
Canby AP                     103 F     0302 PM 08/02   AWOS



Observations are collected from a variety of sources with varying
equipment and exposures. We thank all volunteer weather observers
for their dedication. Not all data listed are considered official.

$$

Borghoff

 

Updated August 4, 2022

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