Alert archive / Oklahoma / Mesoscale Discussions in 2005

Mesoscale Discussion 546

April 10, 20054 states

The Storm Prediction Center issued this mesoscale discussion at Apr 10, 2005, 8:53 PM CDT for 4 states. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Apr 10, 2005, 8:53 PM CDT (01:53 UTC)
Expired
Apr 10, 2005, 11:00 PM CDT
In force
2 hr
Issued by
the Storm Prediction Center
All 26 counties

Benton County, AR, Crawford County, AR, Sebastian County, AR, Washington County, AR, Cherokee County, KS, Crawford County, KS, Labette County, KS, Montgomery County, KS, Jasper County, MO, McDonald County, MO, Newton County, MO, Adair County, OK, Cherokee County, OK, Craig County, OK, Delaware County, OK, Haskell County, OK, Latimer County, OK, LeFlore County, OK, Mayes County, OK, McCurtain County, OK, Muskogee County, OK, Nowata County, OK, Ottawa County, OK, Rogers County, OK, Sequoyah County, OK, Wagoner County, OK

The radar

The Western Arkansas radar (KSRX), 70 km from the middle of the area, began a volume at 01:51 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

Springfield, MO (KSGF), launched 00:00Z, 1.9 hours before the alert went out and 177 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, Springfield, MO at 00:00Z on 2005-04-11Temperature 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, Springfield, MO at 00:00Z on 2005-04-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 96 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
1700 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
96 m²/s²
0-3 km storm-relative helicity
134 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 10, 9:15 PM CDTSevere Thunderstorm WatchSPCBenton, Carroll, Clark, Crawford, Franklin, Howard and 10 more7 hr
Apr 11, 1:23 AM CDTMesoscale DiscussionSPCBenton, Carroll, Clark, Crawford, Franklin, Howard and 11 more67 min
Apr 11, 3:12 AM CDTMesoscale DiscussionSPCColumbia, Lafayette, Miller, Union63 min
Apr 11, 3:23 AM CDTMesoscale DiscussionSPCBenton, Carroll, Clark, Crawford, Franklin, Howard and 11 more67 min
Apr 11, 3:45 AM CDTSevere Thunderstorm WatchSPCAshley, Bradley, Columbia, Lafayette, Miller, Union7 hr
Apr 11, 6:17 AM CDTMesoscale DiscussionSPCArkansas, Clay, Cleburne, Conway, Craighead, Crittenden and 27 more118 min
Apr 11, 6:53 AM CDTMesoscale DiscussionSPCAshley, Columbia, Lafayette, Miller, Union67 min
Apr 11, 9:41 AM CDTMesoscale DiscussionSPCAshley, Bradley, Chicot, Columbia, Union2 hr
Apr 11, 10:15 AM CDTTornado WatchSPCAshley, Chicot, Desha, Drew9 hr
Apr 11, 12:12 PM CDTMesoscale DiscussionSPCAshley, Bradley, Chicot, Columbia, Union2 hr
Apr 11, 2:01 PM CDTMesoscale DiscussionSPCBenton, Carroll, Madison, Washington89 min
Apr 10, 9:23 PM CDTMesoscale DiscussionSPCButler, Clay, Cloud, Cowley, Dickinson, Ellsworth and 14 more2 hr
Apr 11, 10:55 AM CDTMesoscale DiscussionSPCBrown, Clay, Cloud, Geary, Marshall, Nemaha and 4 more95 min
Apr 11, 11:55 AM CDTTornado WatchSPCBrown, Chase, Clay, Dickinson, Geary, Jackson and 13 more8 hr
Apr 11, 5:01 PM CDTMesoscale DiscussionSPCBrown, Clay, Geary, Jackson, Marshall, Nemaha and 5 more59 min
Apr 11, 5:40 PM CDTSevere Thunderstorm WatchSPCDoniphan, Johnson, Leavenworth, Linn, Miami, Wyandotte4 hr
Apr 10, 7:49 PM CDTMesoscale DiscussionSPCAtchison, Holt56 min
Apr 10, 7:32 PM CDTMesoscale DiscussionSPCAtoka, Canadian, Carter, Cleveland, Coal, Creek and 18 more88 min

Nearby

Mesoscale Discussions in Oklahoma, 2005Mesoscale Discussions in Arkansas, 2005Mesoscale Discussions in Kansas, 2005Every mesoscale discussion in 2005

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.