Alert archive / Minnesota / Heat Advisories in 2022

Heat Advisory 5, NWS Twin Cities, MN

August 1, 202238 counties in Minnesota

NWS Twin Cities, MN issued this heat advisory at Aug 1, 2022, 3:31 AM CDT for 38 counties in Minnesota. It took effect at Aug 2, 2022, 1:00 PM CDT. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued: Aug 1, 2022, 3:31 AM CDT (08:31 UTC)
In effect from: Aug 2, 2022, 1:00 PM CDT
Expired: Aug 2, 2022, 9:00 PM CDT
In force: 8 hr
Issued by: NWS Twin Cities, MN

All 38 counties

Anoka County, MN, Benton County, MN, Blue Earth County, MN, Brown County, MN, Carver County, MN, Chippewa County, MN, Chisago County, MN, Dakota County, MN, Douglas County, MN, Faribault County, MN, Freeborn County, MN, Goodhue County, MN, Hennepin County, MN, Isanti County, MN, Kandiyohi County, MN, Lac qui Parle County, MN, Le Sueur County, MN, Martin County, MN, McLeod County, MN, Meeker County, MN, Nicollet County, MN, Pope County, MN, Ramsey County, MN, Redwood County, MN, Renville County, MN, Rice County, MN, Scott County, MN, Sherburne County, MN, Sibley County, MN, Stearns County, MN, Steele County, MN, Stevens County, MN, Swift County, MN, Waseca County, MN, Washington County, MN, Watonwan County, MN, Wright County, MN, Yellow Medicine County, MN

The radar

The Minneapolis radar (KMPX), 52 km from the middle of the area, began a volume at 08:30 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

Minneapolis, MN (KMPX), launched 00:00Z, 8.5 hours before the alert went out and 49 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1636 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 1070 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 192 m²/s²
0-3 km storm-relative helicity: 222 m²/s²
Significant tornado parameter: 1.3
Supercell composite: 8.1

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this heat advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Twin Cities, MN wrote its last area forecast discussion before this heat advisory went out at Jul 31, 10:53 PM CDT, 4 hours 38 minutes earlier.

Area forecast discussion, Jul 31, 10:53 PM CDT, 4 hours 38 minutes before

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Hazardous weather outlook, Aug 1, 3:25 AM CDT, 6 minutes before

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In the hours before

Local storm report, Jul 31, 9:43 PM CDT, 5 hours 48 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 31, 7:04 PM CDT	Special Weather Statement	MPX	Blue Earth	56 min
Jul 31, 7:28 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Faribault, Freeborn, Waseca	47 min
Jul 31, 8:03 PM CDT	Severe Thunderstorm Warning	MPX	Faribault, Freeborn	42 min
Jul 31, 8:42 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Goodhue	48 min
Jul 31, 8:52 PM CDT	Special Weather Statement	MPX	Washington	38 min
Jul 31, 9:10 PM CDT	Special Weather Statement	MPX	Barron, Polk	50 min
Jul 31, 9:23 PM CDT	Tornado Warning	MPX	Pierce, Saint Croix	22 min

Nearby

Heat Advisories in Minnesota, 2022 Every heat advisory in 2022

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.