Alert archive / Iowa / Mesoscale Discussions in 2014

Mesoscale Discussion 1205

June 29, 201422 counties in Iowa; Nodaway County, Worth County, Missouri

The Storm Prediction Center issued this mesoscale discussion at Jun 29, 2014, 10:10 PM CDT for 22 counties in Iowa; Nodaway County, Worth County, Missouri. It was in force for 65 min.

The area

The outline as issued.

The facts

Issued
Jun 29, 2014, 10:10 PM CDT (03:10 UTC)
Expired
Jun 29, 2014, 11:15 PM CDT
In force
65 min
Issued by
the Storm Prediction Center
All 24 counties

Adair County, IA, Adams County, IA, Appanoose County, IA, Clarke County, IA, Dallas County, IA, Decatur County, IA, Jasper County, IA, Lucas County, IA, Madison County, IA, Mahaska County, IA, Marion County, IA, Marshall County, IA, Monroe County, IA, Polk County, IA, Poweshiek County, IA, Ringgold County, IA, Story County, IA, Tama County, IA, Taylor County, IA, Union County, IA, Warren County, IA, Wayne County, IA, Nodaway County, MO, Worth County, MO

The radar

The Des Moines radar (KDMX), 64 km from the middle of the area, began a volume at 03:09 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 00:00Z, 3.2 hours before the alert went out and 230 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 2014-06-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2027 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 2014-06-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 146 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
2027 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
1288 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
146 m²/s²
0-3 km storm-relative helicity
271 m²/s²
Significant tornado parameter
2.3
Supercell composite
24.3

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
Jun 29, 7:50 PM CDTMesoscale DiscussionSPCBuchanan, Clayton, Delaware, Dubuque, Fayette, Jackson and 2 more85 min
Jun 29, 8:15 PM CDTSevere Thunderstorm WatchSPCAllamakee, Benton, Buchanan, Cedar, Chickasaw, Clayton and 14 more7 hr
Jun 29, 9:43 PM CDTMesoscale DiscussionSPCAllamakee, Buchanan, Cedar, Clayton, Clinton, Delaware and 6 more92 min
Jun 29, 10:54 PM CDTTornado WatchSPCClinton, Jackson5 hr
Jun 30, 3:32 AM CDTMesoscale DiscussionSPCAudubon, Boone, Calhoun, Carroll, Cherokee, Crawford and 15 more58 min
Jun 30, 4:06 AM CDTSevere Thunderstorm WatchSPCAdair, Adams, Appanoose, Audubon, Boone, Calhoun and 42 more10 hr
Jun 30, 7:16 AM CDTMesoscale DiscussionSPCAudubon, Benton, Black Hawk, Boone, Bremer, Buchanan and 36 more89 min
Jun 30, 9:08 AM CDTMesoscale DiscussionSPCAdair, Adams, Cass, Harrison, Mills, Montgomery and 2 more67 min
Jun 30, 9:38 AM CDTTornado WatchSPCAdair, Adams, Appanoose, Audubon, Black Hawk, Boone and 46 more10 hr
Jun 30, 10:48 AM CDTMesoscale DiscussionSPCAudubon, Calhoun, Carroll, Crawford, Greene, Guthrie and 7 more87 min
Jun 30, 1:27 PM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Audubon, Benton, Black Hawk and 60 more93 min
Jun 30, 2:03 PM CDTTornado WatchSPCBenton, Buchanan, Cedar, Clayton, Clinton, Delaware and 17 more5 hr
Jun 30, 3:17 PM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Audubon, Boone, Carroll and 28 more58 min
Jun 30, 3:25 PM CDTMesoscale DiscussionSPCAllamakee, Benton, Buchanan, Cedar, Clayton, Clinton and 18 more35 min
Jun 30, 6:28 PM CDTMesoscale DiscussionSPCBenton, Cedar, Clinton, Dubuque, Iowa, Jackson and 10 more92 min
Jun 29, 9:02 PM CDTMesoscale DiscussionSPCAndrew, Buchanan, Caldwell, Carroll, Cass, Chariton and 19 more88 min
Jun 29, 11:36 PM CDTMesoscale DiscussionSPCBuchanan, Caldwell, Carroll, Chariton, Clay, Clinton and 11 more54 min
Jun 30, 12:06 PM CDTMesoscale DiscussionSPCAndrew, Buchanan, Clay, Clinton, DeKalb, Holt and 2 more54 min
Jun 30, 3:52 PM CDTMesoscale DiscussionSPCAndrew, Atchison, Buchanan, Clay, Clinton, Daviess and 7 more113 min
Jun 30, 5:12 PM CDTMesoscale DiscussionSPCAdair, Andrew, Buchanan, Caldwell, Clark, Clinton and 20 more63 min
Jun 30, 5:29 PM CDTTornado WatchSPCAdair, Andrew, Atchison, Audrain, Boone, Buchanan and 34 more6 hr

Nearby

Mesoscale Discussions in Iowa, 2014Mesoscale Discussions in Missouri, 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.