Alert archive / Minnesota / Heat Advisories in 2026

Heat Advisory 7, NWS Twin Cities, MN

July 26, 202620 counties in Minnesota; 5 counties in Wisconsin

NWS Twin Cities, MN issued this heat advisory at Jul 26, 2026, 2:19 AM CDT for 20 counties in Minnesota; 5 counties in Wisconsin. It took effect at Jul 26, 2026, 9:00 PM CDT. It was in force for 23 hr.

The area

The counties it named.

The facts

Issued
Jul 26, 2026, 2:19 AM CDT (07:19 UTC)
In effect from
Jul 26, 2026, 9:00 PM CDT
Expired
Jul 27, 2026, 8:00 PM CDT
In force
23 hr
Issued by
NWS Twin Cities, MN
All 25 counties

Anoka County, MN, Blue Earth County, MN, Brown County, MN, Carver County, MN, Dakota County, MN, Faribault County, MN, Freeborn County, MN, Goodhue County, MN, Hennepin County, MN, Le Sueur County, MN, Martin County, MN, Nicollet County, MN, Ramsey County, MN, Rice County, MN, Scott County, MN, Sibley County, MN, Steele County, MN, Waseca County, MN, Washington County, MN, Watonwan County, MN, Dunn County, WI, Eau Claire County, WI, Pepin County, WI, Pierce County, WI, Saint Croix County, WI

The radar

The Minneapolis radar (KMPX), 46 km from the middle of the area, began a volume at 07:20 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

Aberdeen, SD (KABR), launched 00:00Z, 7.3 hours before the alert went out and 402 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, Aberdeen, SD at 00:00Z on 2026-07-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4963 joules per kilogram.LCLLFCEL10008507005003002001001 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, Aberdeen, SD at 00:00Z on 2026-07-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 100 square meters per square second.19395878Sfc1 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
4963 J/kg
Mixed-layer CIN
-115 J/kg
Mixed-layer LCL
1465 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
100 m²/s²
0-3 km storm-relative helicity
155 m²/s²
Significant tornado parameter
1.8
Supercell composite
17.3

Open this sounding in Storm Lab

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.