Alert archive / Iowa / Mesoscale Discussions in 2004

Mesoscale Discussion 1253

June 13, 20044 states

The Storm Prediction Center issued this mesoscale discussion at Jun 13, 2004, 6:54 PM CDT for 4 states. It was in force for 66 min.

The area

The outline as issued.

The facts

Issued
Jun 13, 2004, 6:54 PM CDT (23:54 UTC)
Expired
Jun 13, 2004, 8:00 PM CDT
In force
66 min
Issued by
the Storm Prediction Center
All 25 counties

Adams County, IA, Fremont County, IA, Mills County, IA, Montgomery County, IA, Page County, IA, Pottawattamie County, IA, Taylor County, IA, Atchison County, KS, Brown County, KS, Doniphan County, KS, Jackson County, KS, Marshall County, KS, Nemaha County, KS, Andrew County, MO, Atchison County, MO, Buchanan County, MO, Holt County, MO, Nodaway County, MO, Gage County, NE, Johnson County, NE, Nemaha County, NE, Otoe County, NE, Pawnee County, NE, Richardson County, NE, Saline County, NE

The radar

The Omaha radar (KOAX), 109 km from the middle of the area, began a volume at 23:54 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 109 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 2004-06-13Temperature 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, Omaha, NE at 12:00Z on 2004-06-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 17 square meters per square second.1939587897117Sfc1 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
1481 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
17 m²/s²
0-3 km storm-relative helicity
25 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 12, 7:00 PM CDTMesoscale DiscussionSPCAllamakee, Chickasaw, Clayton, Fayette, Howard, Winneshiek2 hr
Jun 12, 7:09 PM CDTMesoscale DiscussionSPCAppanoose, Benton, Boone, Cedar, Clarke, Clinton and 32 more96 min
Jun 13, 3:55 PM CDTSevere Thunderstorm WatchSPCAdams, Cass, Fremont, Mills, Montgomery, Page and 2 more5 hr
Jun 12, 7:58 PM CDTMesoscale DiscussionSPCAllen, Bourbon, Cherokee, Crawford, Labette, Montgomery and 3 more62 min
Jun 12, 7:59 PM CDTMesoscale DiscussionSPCAllen, Bourbon, Cherokee, Crawford, Labette, Montgomery and 3 more61 min
Jun 12, 8:15 PM CDTTornado WatchSPCAllen, Bourbon, Chautauqua, Cherokee, Crawford, Elk and 6 more3 hr
Jun 12, 9:06 PM CDTMesoscale DiscussionSPCAnderson, Atchison, Barton, Brown, Chase, Clay and 36 more84 min
Jun 12, 10:00 PM CDTSevere Thunderstorm WatchSPCAllen, Anderson, Atchison, Bourbon, Brown, Butler and 40 more5 hr
Jun 12, 11:47 PM CDTMesoscale DiscussionSPCCherokee88 min
Jun 13, 1:44 AM CDTMesoscale DiscussionSPCAllen, Bourbon, Butler, Chase, Chautauqua, Cherokee and 18 more91 min
Jun 13, 2:46 PM CDTMesoscale DiscussionSPCAtchison, Brown, Clay, Doniphan, Jackson, Jefferson and 4 more119 min

Nearby

Mesoscale Discussions in Iowa, 2004Mesoscale Discussions in Nebraska, 2004Mesoscale Discussions in Kansas, 2004Every mesoscale discussion in 2004

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.