Alert archive / Minnesota / Heat Advisories in 2026

Heat Advisory 6, NWS Twin Cities, MN

July 24, 202611 counties in Minnesota; Pierce County, Polk County, Saint Croix County, Wisconsin

NWS Twin Cities, MN issued this heat advisory at Jul 24, 2026, 12:59 PM CDT for 11 counties in Minnesota; Pierce County, Polk County, Saint Croix County, Wisconsin. It took effect at Jul 25, 2026, 12:00 PM CDT. It was in force for 23 hr.

The area

The counties it named.

The facts

Issued
Jul 24, 2026, 12:59 PM CDT (17:59 UTC)
In effect from
Jul 25, 2026, 12:00 PM CDT
Expired
Jul 26, 2026, 11:00 AM CDT
In force
23 hr
Issued by
NWS Twin Cities, MN

Counties Benton County, MN, Chisago County, MN, Douglas County, MN, Goodhue County, MN, Isanti County, MN, Kanabec County, MN, Mille Lacs County, MN, Morrison County, MN, Sherburne County, MN, Stearns County, MN, Todd County, MN, Pierce County, WI, Polk County, WI, Saint Croix County, WI

The radar

The Minneapolis radar (KMPX), 75 km from the middle of the area, began a volume at 18:03 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

International Fa, MN (KINL), launched 12:00Z, 6.0 hours before the alert went out and 340 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, International Fa, MN at 12:00Z on 2026-07-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, International Fa, MN at 12:00Z on 2026-07-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 44 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1021 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
44 m²/s²
0-3 km storm-relative helicity
43 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 24, 1:50 AM CDTExtreme Heat WatchMPXAnoka, Blue Earth, Brown, Carver, Chippewa, Dakota and 23 more11 hr
Jul 24, 12:59 PM CDTExtreme Heat WatchMPXBenton, Blue Earth, Brown, Chippewa, Chisago, Douglas and 29 more23 hr
Jul 24, 12:59 PM CDTExtreme Heat WarningMPXAnoka, Benton, Blue Earth, Brown, Carver, Chippewa and 36 more56 hr

Nearby

Heat Advisories in Minnesota, 2026Heat Advisories in Wisconsin, 2026Every heat advisory in 2026

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.