Alert archive / Minnesota / Mesoscale Discussions in 2007

Mesoscale Discussion 1233

June 21, 200731 counties in Minnesota

The Storm Prediction Center issued this mesoscale discussion at Jun 21, 2007, 11:08 AM CDT for 31 counties in Minnesota. It was in force for 67 min.

The area

The outline as issued.

The facts

Issued
Jun 21, 2007, 11:08 AM CDT (16:08 UTC)
Expired
Jun 21, 2007, 12:15 PM CDT
In force
67 min
Issued by
the Storm Prediction Center
All 31 counties

Anoka County, MN, Benton County, MN, Brown County, MN, Carver County, MN, Chippewa County, MN, Dakota County, MN, Dodge County, MN, Douglas County, MN, Hennepin County, MN, Isanti County, MN, Kandiyohi County, MN, Lac qui Parle County, MN, Le Sueur 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, Wright County, MN, Yellow Medicine County, MN

The radar

The Minneapolis radar (KMPX), 100 km from the middle of the area, began a volume at 16:10 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, 4.1 hours before the alert went out and 98 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 2007-06-21Temperature 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, Minneapolis, MN at 12:00Z on 2007-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -101 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2261 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
-101 m²/s²
0-3 km storm-relative helicity
64 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 20, 8:28 PM CDTMesoscale DiscussionSPCBlue Earth, Dodge, Goodhue, Le Sueur, Olmsted, Rice and 2 more92 min
Jun 20, 11:30 PM CDTMesoscale DiscussionSPCBlue Earth, Dodge, Faribault, Fillmore, Freeborn, Goodhue and 7 more90 min
Jun 21, 2:10 AM CDTMesoscale DiscussionSPCBig Stone, Lac qui Parle, Stevens, Traverse, Yellow Medicine95 min
Jun 21, 2:29 AM CDTSevere Thunderstorm WatchSPCBig Stone, Traverse, Wilkin8 hr
Jun 21, 3:55 AM CDTMesoscale DiscussionSPCBig Stone, Blue Earth, Brown, Carver, Chippewa, Cottonwood and 32 more95 min
Jun 21, 4:27 AM CDTSevere Thunderstorm WatchSPCBlue Earth, Brown, Carver, Chippewa, Dakota, Dodge and 33 more8 hr
Jun 21, 7:14 AM CDTMesoscale DiscussionSPCBlue Earth, Brown, Chippewa, Cottonwood, Faribault, Jackson and 11 more91 min
Jun 21, 9:10 AM CDTMesoscale DiscussionSPCCottonwood, Jackson, Lincoln, Murray, Nobles, Pipestone and 1 more35 min
Jun 21, 9:38 AM CDTSevere Thunderstorm WatchSPCCottonwood, Jackson, Lincoln, Lyon, Murray, Nobles and 2 more6 hr
Jun 21, 11:55 AM CDTMesoscale DiscussionSPCBlue Earth, Carver, Dakota, Dodge, Faribault, Fillmore and 19 more50 min
Jun 21, 11:59 AM CDTSevere Thunderstorm WatchSPCBlue Earth, Brown, Carver, Dakota, Dodge, Faribault and 20 more8 hr
Jun 21, 2:13 PM CDTMesoscale DiscussionSPCBlue Earth, Brown, Carver, Cottonwood, Dakota, Dodge and 28 more62 min
Jun 21, 3:15 PM CDTMesoscale DiscussionSPCCottonwood, Jackson, Lincoln, Lyon, Murray, Nobles and 2 more30 min
Jun 21, 3:25 PM CDTMesoscale DiscussionSPCBlue Earth, Brown, Carver, Dakota, Dodge, Faribault and 20 more35 min
Jun 21, 5:42 PM CDTMesoscale DiscussionSPCHouston93 min

Nearby

Mesoscale Discussions in Minnesota, 2007Every mesoscale discussion in 2007

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.