Alert archive / Iowa / Mesoscale Discussions in 2013

Mesoscale Discussion 1180

June 22, 20134 states

The Storm Prediction Center issued this mesoscale discussion at Jun 22, 2013, 8:27 PM CDT for 4 states. It was in force for 63 min.

The area

The outline as issued.

The facts

Issued
Jun 22, 2013, 8:27 PM CDT (01:27 UTC)
Expired
Jun 22, 2013, 9:30 PM CDT
In force
63 min
Issued by
the Storm Prediction Center
Chance of a watch
80%
All 74 counties

Boone County, IA, Bremer County, IA, Buena Vista County, IA, Butler County, IA, Calhoun County, IA, Carroll County, IA, Cerro Gordo County, IA, Cherokee County, IA, Chickasaw County, IA, Clay County, IA, Crawford County, IA, Dickinson County, IA, Emmet County, IA, Fayette County, IA, Floyd County, IA, Franklin County, IA, Greene County, IA, Grundy County, IA, Hamilton County, IA, Hancock County, IA, Hardin County, IA, Harrison County, IA, Howard County, IA, Humboldt County, IA, Ida County, IA, Kossuth County, IA, Lyon County, IA, Mitchell County, IA, Monona County, IA, O'Brien County, IA, Osceola County, IA, Palo Alto County, IA, Plymouth County, IA, Pocahontas County, IA, Sac County, IA, Sioux County, IA, Webster County, IA, Winnebago County, IA, Winneshiek County, IA, Woodbury County, IA, Worth County, IA, Wright County, IA, Blue Earth County, MN, Dodge County, MN, Faribault County, MN, Fillmore County, MN, Freeborn County, MN, Jackson County, MN, Martin County, MN, Mower County, MN, Nobles County, MN, Olmsted County, MN, Rock County, MN, Steele County, MN, Waseca County, MN, Watonwan County, MN, Burt County, NE, Cedar County, NE, Cuming County, NE, Dakota County, NE, Dixon County, NE, Knox County, NE, Pierce County, NE, Thurston County, NE, Wayne County, NE, Bon Homme County, SD, Clay County, SD, Hutchinson County, SD, Lincoln County, SD, McCook County, SD, Minnehaha County, SD, Turner County, SD, Union County, SD, Yankton County, SD

The radar

The Sioux Falls radar (KFSD), 152 km from the middle of the area, began a volume at 01:26 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

Omaha, NE (KOAX), launched 00:00Z, 1.5 hours before the alert went out and 223 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, Omaha, NE at 00:00Z on 2013-06-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2525 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, Omaha, NE at 00:00Z on 2013-06-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 49 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
2525 J/kg
Mixed-layer CIN
-23 J/kg
Mixed-layer LCL
1684 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
49 m²/s²
0-3 km storm-relative helicity
150 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 22, 9:21 PM CDTSevere Thunderstorm WatchSPCBuena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more6 hr
Jun 22, 11:48 PM CDTMesoscale DiscussionSPCBuena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 6 more87 min
Jun 23, 3:35 AM CDTMesoscale DiscussionSPCAnoka, Benton, Blue Earth, Brown, Carver, Chippewa and 33 more115 min
Jun 22, 7:42 PM CDTSevere Thunderstorm WatchSPCBoyd, Brown, Cherry, Holt, Keya Paha, Rock and 1 more6 hr
Jun 22, 7:47 PM CDTMesoscale DiscussionSPCAdams, Arthur, Banner, Blaine, Boone, Box Butte and 47 more88 min
Jun 22, 10:34 PM CDTMesoscale DiscussionSPCBlaine, Boyd, Brown, Buffalo, Cherry, Custer and 26 more86 min
Jun 23, 6:50 PM CDTMesoscale DiscussionSPCAdams, Clay, Fillmore, Franklin, Furnas, Gage and 17 more85 min
Jun 22, 7:04 PM CDTMesoscale DiscussionSPCBrown, Campbell, Corson, Dewey, Edmunds, Faulk and 11 more56 min

Nearby

Mesoscale Discussions in Iowa, 2013Mesoscale Discussions in Minnesota, 2013Mesoscale Discussions in Nebraska, 2013Every mesoscale discussion in 2013

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.