Alert archive / Missouri / Mesoscale Discussions in 2008

Mesoscale Discussion 765

May 1, 20084 states

The Storm Prediction Center issued this mesoscale discussion at May 1, 2008, 10:04 PM CDT for 4 states. It was in force for 116 min.

The area

The outline as issued.

The facts

Issued
May 1, 2008, 10:04 PM CDT (03:04 UTC)
Expired
May 2, 2008, 12:00 AM CDT
In force
116 min
Issued by
the Storm Prediction Center
All 139 counties

Adair County, IA, Adams County, IA, Appanoose County, IA, Boone County, IA, Clarke County, IA, Dallas County, IA, Decatur County, IA, Guthrie County, IA, Jasper County, IA, Lucas County, IA, Madison County, IA, Mahaska County, IA, Marion County, IA, Marshall County, IA, Monroe County, IA, Page County, IA, Polk County, IA, Poweshiek County, IA, Ringgold County, IA, Story County, IA, Tama County, IA, Taylor County, IA, Union 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, Andrew County, MO, Atchison County, MO, Barton County, MO, Bates County, MO, Buchanan County, MO, Caldwell County, MO, Carroll County, MO, Cass County, MO, Cedar County, MO, Chariton County, MO, Clay County, MO, Clinton County, MO, Dade County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Henry County, MO, Holt County, MO, Jackson County, MO, Jasper County, MO, Johnson County, MO, Lafayette County, MO, Lawrence County, MO, Linn County, MO, Livingston County, MO, McDonald County, MO, Mercer County, MO, Newton County, MO, Nodaway County, MO, Pettis County, MO, Platte County, MO, Putnam County, MO, Ray County, MO, Saline County, MO, St. Clair County, MO, Sullivan County, MO, Vernon County, MO, Worth County, MO, Caddo County, OK, Canadian County, OK, Carter County, OK, Cleveland County, OK, Coal County, OK, Comanche County, OK, Cotton County, OK, Craig County, OK, Creek County, OK, Delaware County, OK, Garfield County, OK, Garvin County, OK, Grady County, OK, Grant 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, Murray 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 Topeka radar (KTWX), 147 km from the middle of the area, began a volume at 03:04 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, 3.1 hours before the alert went out and 140 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, 11:29 PM CDTMesoscale DiscussionSPCAppanoose, Clarke, Davis, Decatur, Jefferson, Keokuk and 10 more91 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.