Alert archive / Kansas / Mesoscale Discussions in 2004

Mesoscale Discussion 1930

August 9, 20045 states

The Storm Prediction Center issued this mesoscale discussion at Aug 9, 2004, 12:03 PM MDT for 5 states. It was in force for 87 min.

The area

The outline as issued.

The facts

Issued
Aug 9, 2004, 12:03 PM MDT (18:03 UTC)
Expired
Aug 9, 2004, 1:30 PM MDT
In force
87 min
Issued by
the Storm Prediction Center
All 39 counties

Baca County, CO, Bent County, CO, Cheyenne County, CO, Crowley County, CO, Kiowa County, CO, Kit Carson County, CO, Las Animas County, CO, Lincoln County, CO, Otero County, CO, Prowers County, CO, Washington County, CO, Yuma County, CO, Finney County, KS, Gove County, KS, Grant County, KS, Gray County, KS, Greeley County, KS, Hamilton County, KS, Haskell County, KS, Kearny County, KS, Lane County, KS, Logan County, KS, Meade County, KS, Morton County, KS, Scott County, KS, Seward County, KS, Sherman County, KS, Stanton County, KS, Stevens County, KS, Wallace County, KS, Wichita County, KS, Union County, NM, Beaver County, OK, Cimarron County, OK, Texas County, OK, Dallam County, TX, Hansford County, TX, Ochiltree County, TX, Sherman County, TX

The radar

The Goodland radar (KGLD), 177 km from the middle of the area, began a volume at 18:05 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

Dodge City, (KDDC), launched 12:00Z, 6.1 hours before the alert went out and 195 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, Dodge City, at 12:00Z on 2004-08-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 762 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, Dodge City, at 12:00Z on 2004-08-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 156 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
762 J/kg
Mixed-layer CIN
-127 J/kg
Mixed-layer LCL
1044 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
156 m²/s²
0-3 km storm-relative helicity
197 m²/s²
Significant tornado parameter
0.0
Supercell composite
5.2

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
Aug 9, 12:30 PM MDTTornado WatchSPCArapahoe, Baca, Bent, Cheyenne, Crowley, Elbert and 8 more7 hr
Aug 9, 12:50 PM MDTSevere Thunderstorm WatchSPCBaca7 hr
Aug 9, 4:36 PM MDTMesoscale DiscussionSPCBent, Crowley, Douglas, Elbert, El Paso, Kiowa and 4 more54 min
Aug 9, 5:30 PM MDTMesoscale DiscussionSPCBaca60 min
Aug 8, 6:09 PM MDTMesoscale DiscussionSPCClay, Cloud, Dickinson, Ellsworth, Geary, Lincoln and 9 more66 min

Nearby

Mesoscale Discussions in Kansas, 2004Mesoscale Discussions in Colorado, 2004Mesoscale Discussions in Texas, 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.