Alert archive / Iowa / Mesoscale Discussions in 2007

Mesoscale Discussion 1372

July 3, 20074 states

The Storm Prediction Center issued this mesoscale discussion at Jul 3, 2007, 6:55 PM CDT for 4 states. It was in force for 95 min.

The area

The outline as issued.

The facts

Issued
Jul 3, 2007, 6:55 PM CDT (23:55 UTC)
Expired
Jul 3, 2007, 8:30 PM CDT
In force
95 min
Issued by
the Storm Prediction Center
All 66 counties

Black Hawk County, IA, 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, Clay County, IA, Crawford County, IA, Dickinson County, IA, Emmet County, IA, Franklin County, IA, Greene County, IA, Grundy County, IA, Hamilton County, IA, Hancock County, IA, Hardin County, IA, Harrison County, IA, Humboldt County, IA, Ida County, IA, Kossuth County, IA, Lyon 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, Shelby County, IA, Sioux County, IA, Webster County, IA, Winnebago County, IA, Woodbury County, IA, Worth County, IA, Wright County, IA, Faribault County, MN, Freeborn County, MN, Jackson County, MN, Martin County, MN, Nobles County, MN, Antelope County, NE, Boone County, NE, Burt County, NE, Cedar County, NE, Colfax County, NE, Cuming County, NE, Dakota County, NE, Dixon County, NE, Dodge County, NE, Knox County, NE, Madison County, NE, Nance County, NE, Pierce County, NE, Platte County, NE, Stanton County, NE, Thurston County, NE, Washington County, NE, Wayne County, NE, Bon Homme County, SD, Clay County, SD, Lincoln County, SD, Union County, SD, Yankton County, SD

The radar

The Des Moines radar (KDMX), 150 km from the middle of the area, began a volume at 23:58 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

Omaha, NE (KOAX), launched 12:00Z, 11.9 hours before the alert went out and 152 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 12:00Z on 2007-07-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1330 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 12:00Z on 2007-07-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 55 square meters per square second.1939Sfc1 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
1330 J/kg
Mixed-layer CIN
-236 J/kg
Mixed-layer LCL
803 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
55 m²/s²
0-3 km storm-relative helicity
73 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

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
Jul 3, 3:36 PM CDTMesoscale DiscussionSPCBuena Vista, Cherokee, Clay, Dickinson, Emmet, Kossuth and 7 more84 min
Jul 3, 3:59 PM CDTTornado WatchSPCBlack Hawk, Boone, Bremer, Buena Vista, Butler, Calhoun and 32 more8 hr
Jul 3, 6:08 PM CDTTornado WatchSPCAllamakee, Benton, Buchanan, Chickasaw, Clayton, Delaware and 9 more6 hr
Jul 3, 6:39 AM CDTMesoscale DiscussionSPCBig Stone, Grant, Lac qui Parle, Stevens, Swift, Traverse and 1 more2 hr
Jul 3, 11:34 AM CDTMesoscale DiscussionSPCAnoka, Blue Earth, Brown, Carver, Chisago, Dakota and 23 more86 min
Jul 3, 12:10 PM CDTTornado WatchSPCAitkin, Anoka, Benton, Blue Earth, Brown, Carlton and 35 more8 hr
Jul 3, 2:00 PM CDTMesoscale DiscussionSPCAitkin, Becker, Beltrami, Cass, Clay, Clearwater and 12 more90 min
Jul 3, 5:50 PM CDTMesoscale DiscussionSPCAitkin, Anoka, Benton, Blue Earth, Brown, Carlton and 35 more55 min
Jul 2, 9:19 PM CDTMesoscale DiscussionSPCBanner, Box Butte, Cheyenne, Dawes, Kimball, Morrill and 3 more86 min
Jul 3, 2:48 PM CDTMesoscale DiscussionSPCChase, Cheyenne, Deuel, Dundy, Frontier, Hayes and 6 more117 min
Jul 3, 3:25 PM CDTSevere Thunderstorm WatchSPCChase, Dundy, Frontier, Hayes, Hitchcock, Keith and 3 more10 hr
Jul 3, 1:58 AM CDTMesoscale DiscussionSPCCampbell, Corson, McPherson2 hr
Jul 3, 2:21 AM CDTSevere Thunderstorm WatchSPCBrown, Campbell, Corson, Day, Dewey, Edmunds and 10 more7 hr
Jul 3, 5:41 AM CDTMesoscale DiscussionSPCBrown, Butte, Campbell, Corson, Dewey, Edmunds and 10 more2 hr

Nearby

Mesoscale Discussions in Iowa, 2007Mesoscale Discussions in Nebraska, 2007Mesoscale 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.