Alert archive / Oklahoma / Mesoscale Discussions in 2008

Mesoscale Discussion 520

March 31, 20084 states

The Storm Prediction Center issued this mesoscale discussion at Mar 31, 2008, 10:30 AM CDT for 4 states. It was in force for 60 min.

The area

The outline as issued.

The facts

Issued
Mar 31, 2008, 10:30 AM CDT (15:30 UTC)
Expired
Mar 31, 2008, 11:30 AM CDT
In force
60 min
Issued by
the Storm Prediction Center
All 93 counties

Benton County, AR, Boone County, AR, Carroll County, AR, Crawford County, AR, Madison County, AR, Washington County, AR, Allen County, KS, Anderson County, KS, Bourbon County, KS, Chautauqua County, KS, Cherokee County, KS, Cowley County, KS, Crawford County, KS, Elk County, KS, Labette County, KS, Linn County, KS, Montgomery County, KS, Neosho County, KS, Wilson County, KS, Woodson County, KS, Barry County, MO, Barton County, MO, Bates County, MO, Benton County, MO, Camden County, MO, Cedar County, MO, Christian County, MO, Dade County, MO, Dallas County, MO, Douglas County, MO, Greene County, MO, Hickory County, MO, Jasper County, MO, Laclede County, MO, Lawrence County, MO, Maries County, MO, McDonald County, MO, Miller County, MO, Morgan County, MO, Newton County, MO, Phelps County, MO, Polk County, MO, Pulaski County, MO, St. Clair County, MO, Stone County, MO, Taney County, MO, Texas County, MO, Vernon County, MO, Webster County, MO, Wright County, MO, Adair County, OK, Caddo County, OK, Canadian County, OK, Cherokee County, OK, Cleveland County, OK, Coal County, OK, Comanche County, OK, Craig County, OK, Creek County, OK, Delaware County, OK, Garvin County, OK, Grady County, OK, Haskell County, OK, Hughes County, OK, Kay County, OK, Kingfisher County, OK, Latimer County, OK, Lincoln County, OK, Logan County, OK, Mayes County, OK, McClain County, OK, McIntosh County, OK, Murray County, OK, Muskogee County, OK, Noble County, OK, Nowata County, OK, Okfuskee County, OK, Oklahoma County, OK, Okmulgee County, OK, Osage County, OK, Ottawa County, OK, Pawnee County, OK, Payne County, OK, Pittsburg County, OK, Pontotoc County, OK, Pottawatomie County, OK, Rogers County, OK, Seminole County, OK, Sequoyah County, OK, Stephens County, OK, Tulsa County, OK, Wagoner County, OK, Washington County, OK

The radar

The Tulsa radar (KINX), 37 km from the middle of the area, began a volume at 15:30 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 12:00Z, 3.5 hours before the alert went out and 144 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 12:00Z on 2008-03-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 640 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, Springfield, MO at 12:00Z on 2008-03-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 336 square meters per square second.19395878Sfc1 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
640 J/kg
Mixed-layer CIN
-126 J/kg
Mixed-layer LCL
596 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
336 m²/s²
0-3 km storm-relative helicity
354 m²/s²
Significant tornado parameter
0.6
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
Mar 31, 8:44 AM CDTTornado WatchSPCBenton, Carroll, Crawford, Madison, Washington7 hr
Mar 31, 3:04 PM CDTMesoscale DiscussionSPCBaxter, Benton, Boone, Carroll, Crawford, Franklin and 13 more26 min
Mar 31, 3:45 PM CDTTornado WatchSPCBaxter, Benton, Boone, Carroll, Crawford, Franklin and 16 more7 hr
Mar 31, 5:28 PM CDTMesoscale DiscussionSPCClark, Clay, Cleburne, Conway, Craighead, Cross and 34 more62 min
Mar 31, 6:12 PM CDTTornado WatchSPCCalhoun, Clark, Clay, Cleburne, Cleveland, Columbia and 34 more7 hr
Mar 30, 8:50 PM CDTMesoscale DiscussionSPCButler, Cowley, Harper, Sedgwick, Sumner55 min
Mar 30, 9:51 PM CDTSevere Thunderstorm WatchSPCBarber, Barton, Brown, Butler, Chase, Chautauqua and 37 more7 hr
Mar 30, 11:20 PM CDTMesoscale DiscussionSPCBarber, Barton, Brown, Butler, Chase, Chautauqua and 37 more55 min
Mar 31, 1:45 AM CDTMesoscale DiscussionSPCBarber, Barton, Butler, Chase, Clay, Cloud and 32 more2 hr
Mar 31, 3:31 AM CDTMesoscale DiscussionSPCAllen, Anderson, Bourbon, Crawford, Franklin, Johnson and 5 more59 min
Mar 31, 4:09 AM CDTSevere Thunderstorm WatchSPCAtchison, Doniphan3 hr
Mar 31, 4:29 AM CDTMesoscale DiscussionSPCAllen, Anderson, Bourbon, Butler, Chase, Chautauqua and 45 more91 min
Mar 31, 5:05 AM CDTSevere Thunderstorm WatchSPCAllen, Butler, Chase, Chautauqua, Cowley, Elk and 10 more7 hr
Mar 31, 5:59 AM CDTMesoscale DiscussionSPCAtchison, Brown, Doniphan, Nemaha91 min
Mar 31, 6:17 AM CDTMesoscale DiscussionSPCAllen, Anderson, Butler, Chase, Chautauqua, Cherokee and 15 more88 min
Mar 31, 7:50 AM CDTMesoscale DiscussionSPCAllen, Bourbon, Chautauqua, Cherokee, Cowley, Crawford and 7 more85 min
Mar 31, 1:09 PM CDTMesoscale DiscussionSPCAdair, Caldwell, Carroll, Chariton, Clark, Clay and 22 more2 hr
Mar 31, 1:10 PM CDTMesoscale DiscussionSPCCrawford, Dent, Franklin, Gasconade, Iron, Jefferson and 16 more35 min
Mar 31, 1:45 PM CDTTornado WatchSPCAudrain, Boone, Callaway, Cole, Crawford, Franklin and 17 more6 hr
Mar 30, 10:52 PM CDTTornado WatchSPCAlfalfa, Blaine, Caddo, Canadian, Cleveland, Creek and 16 more6 hr
Mar 31, 1:17 AM CDTMesoscale DiscussionSPCAlfalfa, Blaine, Caddo, Canadian, Cleveland, Creek and 16 more88 min
Mar 31, 2:52 AM CDTMesoscale DiscussionSPCGarfield, Grant, Kay, Logan, Noble, Osage and 2 more53 min
Mar 31, 4:00 AM CDTMesoscale DiscussionSPCPawnee90 min
Mar 31, 12:20 PM CDTMesoscale DiscussionSPCAtoka, Bryan, Carter, Choctaw, Cotton, Jefferson and 4 more55 min
Mar 31, 2:00 PM CDTTornado WatchSPCAtoka, Bryan, Carter, Choctaw, Jefferson, Johnston and 3 more7 hr
Mar 31, 3:49 PM CDTMesoscale DiscussionSPCAtoka, Bryan, Carter, Choctaw, Jefferson, Johnston and 3 more56 min

Nearby

Mesoscale Discussions in Oklahoma, 2008Mesoscale Discussions in Missouri, 2008Mesoscale Discussions in Kansas, 2008Every mesoscale discussion in 2008

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.