Alert archive / Oklahoma / Mesoscale Discussions in 2008

Mesoscale Discussion 541

April 3, 200812 counties in Arkansas; McDonald County, Missouri; 17 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Apr 3, 2008, 2:39 PM CDT for 12 counties in Arkansas; McDonald County, Missouri; 17 counties in Oklahoma. It was in force for 66 min.

The area

The outline as issued.

The facts

Issued
Apr 3, 2008, 2:39 PM CDT (19:39 UTC)
Expired
Apr 3, 2008, 3:45 PM CDT
In force
66 min
Issued by
the Storm Prediction Center
All 30 counties

Benton County, AR, Crawford County, AR, Franklin County, AR, Johnson County, AR, Logan County, AR, Madison County, AR, Newton County, AR, Polk County, AR, Scott County, AR, Sebastian County, AR, Washington County, AR, Yell County, AR, McDonald County, MO, Adair County, OK, Cherokee County, OK, Craig County, OK, Delaware County, OK, Haskell County, OK, Latimer County, OK, LeFlore County, OK, Mayes County, OK, McIntosh County, OK, Muskogee County, OK, Okmulgee County, OK, Ottawa County, OK, Pittsburg County, OK, Rogers County, OK, Sequoyah County, OK, Tulsa County, OK, Wagoner County, OK

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, 7.7 hours before the alert went out and 176 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 2008-04-03Temperature 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 12:00Z on 2008-04-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 264 square meters per square second.1939587897117Sfc1 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
492 m above ground
0-6 km bulk shear
60 kt
0-1 km storm-relative helicity
264 m²/s²
0-3 km storm-relative helicity
245 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 3, 5:22 AM CDTMesoscale DiscussionSPCArkansas, Cleburne, Cleveland, Conway, Crawford, Cross and 25 more113 min
Apr 3, 3:50 PM CDTTornado WatchSPCBaxter, Benton, Boone, Carroll, Cleburne, Conway and 20 more5 hr
Apr 3, 5:32 PM CDTMesoscale DiscussionSPCClark, Garland, Hempstead, Hot Spring, Howard, Lafayette and 9 more58 min
Apr 3, 5:54 PM CDTTornado WatchSPCHoward, Little River, Miller, Sevier3 hr
Apr 3, 6:12 PM CDTMesoscale DiscussionSPCBaxter, Benton, Boone, Carroll, Crawford, Franklin and 9 more2 hr
Apr 3, 9:51 AM CDTMesoscale DiscussionSPCBarry, Barton, Bates, Benton, Boone, Callaway and 37 more84 min
Apr 3, 1:39 PM CDTMesoscale DiscussionSPCCape Girardeau, Mississippi, New Madrid, Scott, Stoddard66 min
Apr 3, 10:47 AM CDTMesoscale DiscussionSPCAtoka, Bryan, Carter, Choctaw, Coal, Jefferson and 5 more58 min
Apr 3, 1:42 PM CDTMesoscale DiscussionSPCCaddo, Canadian, Carter, Cleveland, Comanche, Cotton and 17 more93 min
Apr 3, 2:04 PM CDTTornado WatchSPCAtoka, Bryan, Caddo, Canadian, Carter, Cleveland and 23 more6 hr

Nearby

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