Alert archive / Arkansas / Mesoscale Discussions in 2005

Mesoscale Discussion 552

April 11, 20055 states

The Storm Prediction Center issued this mesoscale discussion at Apr 11, 2005, 6:17 AM CDT for 5 states. It was in force for 118 min.

The area

The outline as issued.

The facts

Issued
Apr 11, 2005, 6:17 AM CDT (11:17 UTC)
Expired
Apr 11, 2005, 8:15 AM CDT
In force
118 min
Issued by
the Storm Prediction Center
All 57 counties

Arkansas County, AR, Clay County, AR, Cleburne County, AR, Conway County, AR, Craighead County, AR, Crittenden County, AR, Cross County, AR, Drew County, AR, Faulkner County, AR, Fulton County, AR, Greene County, AR, Independence County, AR, Izard County, AR, Jackson County, AR, Jefferson County, AR, Lawrence County, AR, Lee County, AR, Lincoln County, AR, Lonoke County, AR, Mississippi County, AR, Monroe County, AR, Phillips County, AR, Poinsett County, AR, Prairie County, AR, Pulaski County, AR, Randolph County, AR, Saline County, AR, Sharp County, AR, St. Francis County, AR, Stone County, AR, Van Buren County, AR, White County, AR, Woodruff County, AR, Carlisle County, KY, Fulton County, KY, Hickman County, KY, Butler County, MO, Dunklin County, MO, Mississippi County, MO, New Madrid County, MO, Oregon County, MO, Pemiscot County, MO, Ripley County, MO, Scott County, MO, Stoddard County, MO, DeSoto County, MS, Tunica County, MS, Crockett County, TN, Dyer County, TN, Gibson County, TN, Haywood County, TN, Lake County, TN, Lauderdale County, TN, Obion County, TN, Shelby County, TN, Tipton County, TN, Weakley County, TN

The radar

The Memphis radar (KNQA), 97 km from the middle of the area, began a volume at 11:16 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, 11.3 hours before the alert went out and 299 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, 8:53 PM CDTMesoscale DiscussionSPCBenton, Crawford, Sebastian, Washington2 hr
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, 6:53 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 11, 3:56 AM CDTMesoscale DiscussionSPCAttala, Carroll, Claiborne, Copiah, Hinds, Holmes and 10 more64 min
Apr 11, 1:17 PM CDTMesoscale DiscussionSPCAlcorn, Benton, Coahoma, Itawamba, Lafayette, Lee and 10 more58 min
Apr 11, 1:35 PM CDTTornado WatchSPCAlcorn, Benton, Calhoun, Chickasaw, Itawamba, Lafayette and 10 more5 hr
Apr 11, 1:41 PM CDTMesoscale DiscussionSPCAdams, Amite, Claiborne, Copiah, Covington, Franklin and 15 more2 hr
Apr 11, 2:05 PM CDTTornado WatchSPCAmite, Attala, Choctaw, Clarke, Clay, Copiah and 28 more7 hr
Apr 11, 6:35 PM CDTTornado WatchSPCForrest, George, Greene, Hancock, Harrison, Jackson and 3 more4 hr
Apr 11, 6:52 PM CDTMesoscale DiscussionSPCAmite, Attala, Choctaw, Clay, Copiah, Covington and 23 more83 min
Apr 10, 7:49 PM CDTMesoscale DiscussionSPCAtchison, Holt56 min
Apr 11, 10:55 AM CDTMesoscale DiscussionSPCAtchison, Holt95 min
Apr 11, 11:55 AM CDTTornado WatchSPCAtchison, Holt8 hr
Apr 11, 5:01 PM CDTMesoscale DiscussionSPCAtchison, Holt59 min
Apr 11, 5:40 PM CDTSevere Thunderstorm WatchSPCBates, Buchanan, Caldwell, Cass, Clay, Clinton and 7 more4 hr

Nearby

Mesoscale Discussions in Arkansas, 2005Mesoscale Discussions in Tennessee, 2005Mesoscale Discussions in Missouri, 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.