Alert archive / Texas / Mesoscale Discussions in 2004

Mesoscale Discussion 307

April 9, 2004Harding County, Quay County, Union County, New Mexico; Cimarron County, Oklahoma; 16 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Apr 9, 2004, 3:20 PM MDT for Harding County, Quay County, Union County, New Mexico; Cimarron County, Oklahoma; 16 counties in Texas. It was in force for 115 min.

The area

The outline as issued.

The facts

Issued
Apr 9, 2004, 3:20 PM MDT (21:20 UTC)
Expired
Apr 9, 2004, 5:15 PM MDT
In force
115 min
Issued by
the Storm Prediction Center

Counties Harding County, NM, Quay County, NM, Union County, NM, Cimarron County, OK, Armstrong County, TX, Carson County, TX, Dallam County, TX, Deaf Smith County, TX, Donley County, TX, Gray County, TX, Hansford County, TX, Hartley County, TX, Hutchinson County, TX, Moore County, TX, Ochiltree County, TX, Oldham County, TX, Potter County, TX, Randall County, TX, Roberts County, TX, Sherman County, TX

The nearest sounding before it

Dodge City, (KDDC), launched 12:00Z, 9.3 hours before the alert went out and 348 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 2004-04-09Temperature 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, Dodge City, at 12:00Z on 2004-04-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 66 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
608 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
66 m²/s²
0-3 km storm-relative helicity
64 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
Apr 8, 6:19 PM MDTMesoscale DiscussionSPCEddy, Lea, Roosevelt26 min
Apr 8, 6:40 PM MDTSevere Thunderstorm WatchSPCLea4 hr
Apr 8, 7:42 PM MDTMesoscale DiscussionSPCLea63 min
Apr 8, 9:18 PM MDTMesoscale DiscussionSPCLea57 min
Apr 9, 12:00 PM MDTMesoscale DiscussionSPCAdair, Cherokee, Craig, Creek, Delaware, Garfield and 21 more3 hr
Apr 9, 12:51 PM MDTMesoscale DiscussionSPCAtoka, Beckham, Blaine, Caddo, Canadian, Cleveland and 27 more114 min
Apr 9, 1:15 PM MDTSevere Thunderstorm WatchSPCAtoka, Beckham, Blaine, Bryan, Caddo, Canadian and 27 more6 hr
Apr 9, 2:32 PM MDTMesoscale DiscussionSPCAtoka, Bryan, Carter, Choctaw, Coal, Haskell and 15 more88 min
Apr 9, 3:00 PM MDTSevere Thunderstorm WatchSPCHaskell, Latimer, LeFlore, Muskogee, Pushmataha, Sequoyah5 hr
Apr 9, 4:49 PM MDTMesoscale DiscussionSPCBrown, Burnet, Callahan, Coleman, Comanche, Concho and 17 more86 min

Nearby

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