Alert archive / Minnesota / Mesoscale Discussions in 2014

Mesoscale Discussion 1471

July 26, 201426 counties in Minnesota; 5 counties in Wisconsin

The Storm Prediction Center issued this mesoscale discussion at Jul 26, 2014, 3:21 PM CDT for 26 counties in Minnesota; 5 counties in Wisconsin. It was in force for 54 min.

The area

The outline as issued.

The facts

Issued
Jul 26, 2014, 3:21 PM CDT (20:21 UTC)
Expired
Jul 26, 2014, 4:15 PM CDT
In force
54 min
Issued by
the Storm Prediction Center
Chance of a watch
20%
All 31 counties

Aitkin County, MN, Anoka County, MN, Benton County, MN, Carlton County, MN, Cass County, MN, Chisago County, MN, Crow Wing County, MN, Hennepin County, MN, Hubbard County, MN, Isanti County, MN, Itasca County, MN, Kanabec County, MN, Kandiyohi County, MN, Koochiching County, MN, Lake County, MN, Meeker County, MN, Mille Lacs County, MN, Morrison County, MN, Pine County, MN, Ramsey County, MN, Saint Louis County, MN, Sherburne County, MN, Stearns County, MN, Todd County, MN, Wadena County, MN, Wright County, MN, Bayfield County, WI, Burnett County, WI, Douglas County, WI, Polk County, WI, Washburn County, WI

The radar

The Duluth radar (KDLH), 52 km from the middle of the area, began a volume at 20:22 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 12:00Z, 8.4 hours before the alert went out and 239 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 2014-07-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 45 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 2014-07-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -115 square meters per square second.1939587897Sfc1 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
45 J/kg
Mixed-layer CIN
-311 J/kg
Mixed-layer LCL
1495 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
-115 m²/s²
0-3 km storm-relative helicity
13 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.8

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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Nearby

Mesoscale Discussions in Minnesota, 2014Mesoscale Discussions in Wisconsin, 2014Every mesoscale discussion in 2014

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.