Alert archive / Minnesota / Mesoscale Discussions in 2016

Mesoscale Discussion 1508

August 10, 201626 counties in Minnesota; Burnett County, Polk County, Wisconsin

The Storm Prediction Center issued this mesoscale discussion at Aug 10, 2016, 3:30 AM CDT for 26 counties in Minnesota; Burnett County, Polk County, Wisconsin. It was in force for 60 min.

The area

The outline as issued.

The facts

Issued
Aug 10, 2016, 3:30 AM CDT (08:30 UTC)
Expired
Aug 10, 2016, 4:30 AM CDT
In force
60 min
Issued by
the Storm Prediction Center
All 28 counties

Anoka County, MN, Benton County, MN, Big Stone County, MN, Chisago County, MN, Douglas County, MN, Grant County, MN, Hennepin County, MN, Isanti County, MN, Kanabec County, MN, Kandiyohi County, MN, Meeker County, MN, Mille Lacs County, MN, Morrison County, MN, Otter Tail County, MN, Pine County, MN, Pope County, MN, Ramsey County, MN, Sherburne County, MN, Stearns County, MN, Stevens County, MN, Swift County, MN, Todd County, MN, Traverse County, MN, Washington County, MN, Wilkin County, MN, Wright County, MN, Burnett County, WI, Polk County, WI

The radar

The Minneapolis radar (KMPX), 153 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 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 00:00Z, 8.5 hours before the alert went out and 151 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 00:00Z on 2016-08-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3252 joules per kilogram.LCLEL10008507005003002001001 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 00:00Z on 2016-08-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 117 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
3252 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
931 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
117 m²/s²
0-3 km storm-relative helicity
75 m²/s²
Significant tornado parameter
1.5
Supercell composite
10.0

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 9, 10:19 PM CDTSevere Thunderstorm WatchSPCBig Stone, Chippewa, Clay, Douglas, Grant, Lac qui Parle and 8 more8 hr
Aug 10, 1:05 AM CDTMesoscale DiscussionSPCBig Stone, Lac qui Parle, Swift, Traverse55 min
Aug 10, 4:02 AM CDTSevere Thunderstorm WatchSPCAitkin, Benton, Cass, Chisago, Crow Wing, Isanti and 7 more4 hr
Aug 10, 11:19 AM CDTMesoscale DiscussionSPCBecker, Clay, Otter Tail, Wilkin2 hr
Aug 10, 1:15 PM CDTSevere Thunderstorm WatchSPCBecker, Big Stone, Clay, Douglas, Grant, Lac qui Parle and 8 more7 hr
Aug 10, 3:45 PM CDTMesoscale DiscussionSPCBecker, Big Stone, Cass, Chippewa, Clay, Crow Wing and 14 more2 hr
Aug 10, 3:52 PM CDTMesoscale DiscussionSPCJackson113 min
Aug 10, 4:04 PM CDTMesoscale DiscussionSPCAnoka, Benton, Carver, Chisago, Hennepin, Isanti and 13 more26 min
Aug 10, 4:20 PM CDTSevere Thunderstorm WatchSPCAitkin, Anoka, Benton, Carlton, Carver, Cass and 17 more5 hr
Aug 10, 6:54 PM CDTMesoscale DiscussionSPCAitkin, Anoka, Benton, Carlton, Cass, Chisago and 15 more66 min

Nearby

Mesoscale Discussions in Minnesota, 2016Mesoscale Discussions in Wisconsin, 2016Every mesoscale discussion in 2016

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.