Alert archive / Oklahoma / Mesoscale Discussions in 2008

Mesoscale Discussion 855

May 10, 20084 states

The Storm Prediction Center issued this mesoscale discussion at May 10, 2008, 7:36 AM CDT for 4 states. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
May 10, 2008, 7:36 AM CDT (12:36 UTC)
Expired
May 10, 2008, 10:00 AM CDT
In force
2 hr
Issued by
the Storm Prediction Center
All 91 counties

Benton County, AR, Carroll County, AR, Crawford County, AR, Franklin County, AR, Hempstead County, AR, Howard County, AR, Johnson County, AR, Little River County, AR, Logan County, AR, Madison County, AR, Montgomery County, AR, Pike County, AR, Polk County, AR, Scott County, AR, Sebastian County, AR, Sevier County, AR, Washington County, AR, Yell County, AR, Allen County, KS, Bourbon County, KS, Butler County, KS, Chase County, KS, Chautauqua County, KS, Cherokee County, KS, Cowley County, KS, Crawford County, KS, Elk County, KS, Greenwood County, KS, Labette County, KS, Montgomery County, KS, Neosho County, KS, Sedgwick County, KS, Sumner County, KS, Wilson County, KS, Woodson County, KS, Barry County, MO, Barton County, MO, Jasper County, MO, McDonald County, MO, Newton County, MO, Adair County, OK, Atoka County, OK, Bryan County, OK, Canadian County, OK, Carter County, OK, Cherokee County, OK, Choctaw 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, Grant County, OK, Haskell County, OK, Hughes County, OK, Johnston County, OK, Kay County, OK, Kingfisher County, OK, Latimer County, OK, LeFlore County, OK, Lincoln County, OK, Logan County, OK, Marshall County, OK, Mayes County, OK, McClain County, OK, McCurtain 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, Pushmataha County, OK, Rogers County, OK, Seminole County, OK, Sequoyah County, OK, Tulsa County, OK, Wagoner County, OK, Washington County, OK

The radar

The Tulsa radar (KINX), 23 km from the middle of the area, began a volume at 12:40 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

Lamont, OK (KLMN), launched 12:00Z, 0.6 hours before the alert went out and 161 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, Lamont, OK at 12:00Z on 2008-05-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 161 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, Lamont, OK at 12:00Z on 2008-05-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 487 square meters per square second.1939587897117136Sfc1 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
161 J/kg
Mixed-layer CIN
-607 J/kg
Mixed-layer LCL
1021 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
487 m²/s²
0-3 km storm-relative helicity
804 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 10, 4:05 AM CDTMesoscale DiscussionSPCBaxter, Boone, Carroll, Clay, Cleburne, Craighead and 21 more115 min
May 10, 9:40 AM CDTMesoscale DiscussionSPCArkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 37 more65 min
May 10, 10:11 AM CDTTornado WatchSPCArkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 29 more5 hr
May 10, 10:55 AM CDTMesoscale DiscussionSPCBenton, Boone, Carroll, Crawford, Franklin, Johnson and 7 more2 hr
May 10, 11:29 AM CDTTornado WatchSPCBaxter, Benton, Boone, Carroll, Conway, Crawford and 15 more9 hr
May 10, 12:34 PM CDTMesoscale DiscussionSPCClay, Craighead, Fulton, Greene, Independence, Lawrence and 4 more116 min
May 10, 2:23 PM CDTMesoscale DiscussionSPCArkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 25 more97 min
May 10, 3:36 PM CDTTornado Watch PDSSPCArkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 36 more4 hr
May 10, 4:27 PM CDTTornado WatchSPCClay, Craighead, Crittenden, Cross, Greene, Lawrence and 6 more10 hr
May 10, 5:13 PM CDTMesoscale DiscussionSPCBaxter, Benton, Boone, Carroll, Crawford, Franklin and 9 more2 hr
May 10, 6:22 PM CDTMesoscale DiscussionSPCArkansas, Bradley, Calhoun, Chicot, Clark, Cleveland and 28 more83 min
May 10, 6:51 PM CDTTornado Watch PDSSPCArkansas, Ashley, Baxter, Boone, Bradley, Calhoun and 50 more7 hr
May 9, 11:16 PM CDTMesoscale DiscussionSPCCheyenne, Decatur, Norton, Rawlins2 hr
May 10, 1:50 PM CDTMesoscale DiscussionSPCBarber, Barton, Dickinson, Edwards, Ellsworth, Harper and 16 more115 min
May 10, 12:47 PM CDTMesoscale DiscussionSPCAtoka, Bryan, Carter, Choctaw, Cleveland, Coal and 24 more88 min
May 10, 1:38 PM CDTTornado WatchSPCAtoka, Bryan, Carter, Choctaw, Coal, Garvin and 16 more10 hr

Nearby

Mesoscale Discussions in Oklahoma, 2008Mesoscale Discussions in Arkansas, 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.