Alert archive / Missouri / Mesoscale Discussions in 2008

Mesoscale Discussion 766

May 1, 20084 states

The Storm Prediction Center issued this mesoscale discussion at May 1, 2008, 11:29 PM CDT for 4 states. It was in force for 91 min.

The area

The outline as issued.

The facts

Issued
May 1, 2008, 11:29 PM CDT (04:29 UTC)
Expired
May 2, 2008, 1:00 AM CDT
In force
91 min
Issued by
the Storm Prediction Center
All 153 counties

Appanoose County, IA, Clarke County, IA, Davis County, IA, Decatur County, IA, Jefferson County, IA, Keokuk County, IA, Lee County, IA, Lucas County, IA, Mahaska County, IA, Marion County, IA, Monroe County, IA, Ringgold County, IA, Van Buren County, IA, Wapello County, IA, Warren County, IA, Wayne County, IA, Allen County, KS, Anderson County, KS, Atchison County, KS, Bourbon County, KS, Brown County, KS, Butler County, KS, Chase County, KS, Chautauqua County, KS, Cherokee County, KS, Coffey County, KS, Cowley County, KS, Crawford County, KS, Doniphan County, KS, Douglas County, KS, Elk County, KS, Franklin County, KS, Greenwood County, KS, Jackson County, KS, Jefferson County, KS, Johnson County, KS, Labette County, KS, Leavenworth County, KS, Linn County, KS, Lyon County, KS, Miami County, KS, Montgomery County, KS, Neosho County, KS, Osage County, KS, Shawnee County, KS, Sumner County, KS, Wabaunsee County, KS, Wilson County, KS, Woodson County, KS, Wyandotte County, KS, Adair County, MO, Andrew County, MO, Audrain County, MO, Barton County, MO, Bates County, MO, Benton County, MO, Boone County, MO, Buchanan County, MO, Caldwell County, MO, Callaway County, MO, Camden County, MO, Carroll County, MO, Cass County, MO, Cedar County, MO, Chariton County, MO, Clark County, MO, Clay County, MO, Clinton County, MO, Cole County, MO, Cooper County, MO, Dade County, MO, Dallas County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Henry County, MO, Hickory County, MO, Holt County, MO, Howard County, MO, Jackson County, MO, Jasper County, MO, Johnson County, MO, Knox County, MO, Lafayette County, MO, Lawrence County, MO, Lewis County, MO, Linn County, MO, Livingston County, MO, Macon County, MO, Marion County, MO, McDonald County, MO, Mercer County, MO, Miller County, MO, Moniteau County, MO, Monroe County, MO, Morgan County, MO, Newton County, MO, Nodaway County, MO, Pettis County, MO, Platte County, MO, Polk County, MO, Putnam County, MO, Ralls County, MO, Randolph County, MO, Ray County, MO, Saline County, MO, Schuyler County, MO, Scotland County, MO, Shelby County, MO, St. Clair County, MO, Sullivan County, MO, Vernon County, MO, Worth County, MO, Caddo County, OK, Canadian County, OK, Cleveland County, OK, Coal County, OK, Craig County, OK, Creek County, OK, Delaware County, OK, Garfield County, OK, Garvin County, OK, Grady County, OK, Hughes County, OK, Johnston County, OK, Kay County, OK, Kingfisher 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, Pontotoc County, OK, Pottawatomie County, OK, Rogers County, OK, Seminole County, OK, Stephens County, OK, Tulsa County, OK, Wagoner County, OK, Washington County, OK

The radar

The Pleasant Hill radar (KEAX), 86 km from the middle of the area, began a volume at 04:32 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

Topeka, KS (KTOP), launched 00:00Z, 4.5 hours before the alert went out and 106 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, Topeka, KS at 00:00Z on 2008-05-02Temperature 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, Topeka, KS at 00:00Z on 2008-05-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 65 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
3122 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
65 m²/s²
0-3 km storm-relative helicity
168 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
May 1, 7:24 PM CDTMesoscale DiscussionSPCDecatur, Ringgold, Wayne66 min
May 1, 7:47 PM CDTMesoscale DiscussionSPCBuena Vista, Cherokee, Clay, Dickinson, Emmet, Lyon and 5 more88 min
May 1, 10:04 PM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Boone, Clarke, Dallas and 19 more116 min
May 2, 11:05 AM CDTMesoscale DiscussionSPCAllamakee, Benton, Black Hawk, Bremer, Buchanan, Butler and 32 more115 min
May 2, 3:47 PM CDTMesoscale DiscussionSPCAllamakee, Howard, Winneshiek118 min
May 1, 7:19 PM CDTMesoscale DiscussionSPCBarton, Clay, Cloud, Dickinson, Ellsworth, Geary and 13 more56 min
May 1, 8:43 PM CDTMesoscale DiscussionSPCHarper, Harvey, Kingman, McPherson, Marion, Reno and 2 more2 hr
May 2, 12:53 AM CDTTornado WatchSPCAllen, Anderson, Atchison, Bourbon, Chautauqua, Cherokee and 20 more6 hr
May 2, 4:22 AM CDTMesoscale DiscussionSPCBarry, Camden, Christian, Cole, Dallas, Greene and 12 more53 min
May 2, 5:00 AM CDTSevere Thunderstorm WatchSPCAudrain, Boone, Callaway, Camden, Cole, Crawford and 38 more5 hr
May 2, 7:07 AM CDTMesoscale DiscussionSPCCrawford, Dent, Franklin, Shannon, Warren53 min
May 2, 8:49 AM CDTTornado WatchSPCDunklin, Pemiscot6 hr
May 2, 10:20 AM CDTMesoscale DiscussionSPCDunklin, Pemiscot85 min
May 2, 10:44 AM CDTTornado WatchSPCMississippi, New Madrid, Scott, Stoddard9 hr
May 2, 12:12 PM CDTMesoscale DiscussionSPCDunklin, Mississippi, New Madrid, Pemiscot, Scott2 hr
May 2, 1:54 PM CDTTornado WatchSPCPemiscot6 hr
May 2, 1:09 AM CDTTornado WatchSPCAdair, Atoka, Bryan, Carter, Cherokee, Choctaw and 39 more7 hr

Nearby

Mesoscale Discussions in Missouri, 2008Mesoscale Discussions in Oklahoma, 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.