Alert archive / Minnesota / Mesoscale Discussions in 2024

Mesoscale Discussion 1997

August 26, 202412 counties in Minnesota

The Storm Prediction Center issued this mesoscale discussion at Aug 26, 2024, 12:35 PM CDT for 12 counties in Minnesota. It was in force for 85 min.

The area

The outline as issued.

The facts

Issued
Aug 26, 2024, 12:35 PM CDT (17:35 UTC)
Expired
Aug 26, 2024, 2:00 PM CDT
In force
85 min
Issued by
the Storm Prediction Center
Concerning
Severe potential...watch possible
Chance of a watch
40%

Counties Aitkin County, MN, Cass County, MN, Crow Wing County, MN, Douglas County, MN, Grant County, MN, Morrison County, MN, Otter Tail County, MN, Pope County, MN, Stevens County, MN, Todd County, MN, Traverse County, MN, Wadena County, MN

The radar

The Minneapolis radar (KMPX), 186 km from the middle of the area, began a volume at 17:37 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 5.6 hours before the alert went out and 184 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, Minneapolis, MN at 12:00Z on 2024-08-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3708 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, Minneapolis, MN at 12:00Z on 2024-08-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -13 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
3708 J/kg
Mixed-layer CIN
-104 J/kg
Mixed-layer LCL
735 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
-13 m²/s²
0-3 km storm-relative helicity
33 m²/s²
Significant tornado parameter
0.0
Supercell composite
-3.5

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 25, 11:53 PM CDTMesoscale DiscussionSPCBecker, Beltrami, Big Stone, Chippewa, Clay, Clearwater and 21 more2 hr
Aug 26, 2:38 PM CDTSevere Thunderstorm WatchSPCAitkin, Benton, Big Stone, Cass, Chippewa, Crow Wing and 20 more5 hr
Aug 26, 2:43 PM CDTMesoscale DiscussionSPCBenton, Big Stone, Brown, Carver, Cass, Chippewa and 30 more2 hr
Aug 26, 4:39 PM CDTMesoscale DiscussionSPCAnoka, Blue Earth, Brown, Carver, Chisago, Cottonwood and 25 more96 min
Aug 26, 5:18 PM CDTSevere Thunderstorm WatchSPCAnoka, Blue Earth, Brown, Carver, Chisago, Dakota and 15 more6 hr
Aug 26, 5:49 PM CDTSevere Thunderstorm WatchSPCCottonwood, Jackson, Nobles2 hr
Aug 26, 6:44 PM CDTMesoscale DiscussionSPCAnoka, Blue Earth, Carver, Dakota, Goodhue, Hennepin and 8 more91 min

Nearby

Mesoscale Discussions in Minnesota, 2024Every mesoscale discussion in 2024

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.