Alert archive / Texas / Mesoscale Discussions in 2004

Mesoscale Discussion 1576

July 8, 20044 counties in Kansas; 7 counties in Oklahoma; 11 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jul 8, 2004, 9:05 PM CDT for 4 counties in Kansas; 7 counties in Oklahoma; 11 counties in Texas. It was in force for 115 min.

The area

The outline as issued.

The facts

Issued
Jul 8, 2004, 9:05 PM CDT (02:05 UTC)
Expired
Jul 8, 2004, 11:00 PM CDT
In force
115 min
Issued by
the Storm Prediction Center
All 22 counties

Clark County, KS, Comanche County, KS, Meade County, KS, Seward County, KS, Beaver County, OK, Dewey County, OK, Ellis County, OK, Harper County, OK, Roger Mills County, OK, Texas County, OK, Woodward County, OK, Carson County, TX, Gray County, TX, Hansford County, TX, Hemphill County, TX, Hutchinson County, TX, Lipscomb County, TX, Moore County, TX, Ochiltree County, TX, Roberts County, TX, Sherman County, TX, Wheeler County, TX

The radar

The Dodge City radar (KDDC), 148 km from the middle of the area, began a volume at 02:05 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 nearest sounding before it

Dodge City, (KDDC), launched 00:00Z, 2.1 hours before the alert went out and 151 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 00:00Z on 2004-07-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3705 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 00:00Z on 2004-07-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 44 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
3705 J/kg
Mixed-layer CIN
-53 J/kg
Mixed-layer LCL
2137 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
44 m²/s²
0-3 km storm-relative helicity
175 m²/s²
Significant tornado parameter
0.0
Supercell composite
10.7

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 8, 9:45 PM CDTSevere Thunderstorm WatchSPCDecatur, Norton, Phillips, Smith6 hr
Jul 8, 10:58 PM CDTMesoscale DiscussionSPCDecatur, Norton, Phillips, Rawlins, Smith92 min
Jul 9, 12:19 AM CDTMesoscale DiscussionSPCClay, Cloud, Dickinson, Ellis, Ellsworth, Geary and 14 more56 min
Jul 9, 12:45 AM CDTSevere Thunderstorm WatchSPCBarton, Brown, Chase, Clay, Cloud, Dickinson and 27 more4 hr
Jul 9, 2:46 AM CDTMesoscale DiscussionSPCBarton, Chase, Clay, Cloud, Dickinson, Ellis and 27 more89 min
Jul 9, 10:10 AM CDTMesoscale DiscussionSPCBlaine, Canadian, Cherokee, Creek, Garfield, Kingfisher and 12 more2 hr

Nearby

Mesoscale Discussions in Texas, 2004Mesoscale Discussions in Oklahoma, 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.