Alert archive / Missouri / Mesoscale Discussions in 2011
Mesoscale Discussion 515
The Storm Prediction Center issued this mesoscale discussion at Apr 22, 2011, 10:44 AM CDT for 13 counties in Arkansas; 25 counties in Missouri; 11 counties in Oklahoma. It was in force for 61 min.
The area
The outline as issued.
The facts
- Issued
- Apr 22, 2011, 10:44 AM CDT (15:44 UTC)
- Expired
- Apr 22, 2011, 11:45 AM CDT
- In force
- 61 min
- Issued by
- the Storm Prediction Center
All 49 counties
Baxter County, AR, Benton County, AR, Boone County, AR, Carroll County, AR, Crawford County, AR, Franklin County, AR, Fulton County, AR, Johnson County, AR, Madison County, AR, Marion County, AR, Newton County, AR, Sebastian County, AR, Washington County, AR, Barry County, MO, Bollinger County, MO, Carter County, MO, Christian County, MO, Crawford County, MO, Dent County, MO, Douglas County, MO, Greene County, MO, Howell County, MO, Iron County, MO, Madison County, MO, McDonald County, MO, Oregon County, MO, Ozark County, MO, Phelps County, MO, Reynolds County, MO, Saint Francois County, MO, Shannon County, MO, Stone County, MO, Taney County, MO, Texas County, MO, Washington County, MO, Wayne County, MO, Webster County, MO, Wright County, MO, Adair County, OK, Cherokee County, OK, Coal County, OK, Haskell County, OK, Hughes County, OK, Latimer County, OK, LeFlore County, OK, McIntosh County, OK, Muskogee County, OK, Pittsburg County, OK, Sequoyah County, OK
The radar
The Springfield radar (KSGF), 94 km from the middle of the area, began a volume at 15:46 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 nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 3.7 hours before the alert went out and 73 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.
- Mixed-layer CAPE
- 148 J/kg
- Mixed-layer CIN
- -391 J/kg
- Mixed-layer LCL
- 454 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 516 m²/s²
- 0-3 km storm-relative helicity
- 554 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.1
The text
As transmitted, in the capitals the NWS used until 2016.
105
ACUS11 KWNS 221544
SWOMCD
SPC MCD 221544
MOZ000-ARZ000-OKZ000-221645-
MESOSCALE DISCUSSION 0515
NWS STORM PREDICTION CENTER NORMAN OK
1044 AM CDT FRI APR 22 2011
AREAS AFFECTED...ERN OK...NW AR...SRN MO
CONCERNING...OUTLOOK UPGRADE
VALID 221544Z - 221645Z
METEOROLOGICAL DETAILS FORTHCOMING IN UPCOMING 1630Z OUTLOOK
/SWODY1/.
..RACY.. 04/22/2011
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...PAH...LSX...LZK...SGF...TSA...OUN...
LAT...LON 35389624 37149363 37769226 38259085 37758999 36919003
36459161 34459556 34529630 35389624SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 22, 1:23 PM CDT | Mesoscale Discussion | SPC | Benton, Crawford, Sebastian, Washington | 97 min |
| Apr 22, 3:47 PM CDT | Tornado Watch | SPC | Benton, Carroll, Crawford, Franklin, Madison, Sebastian and 1 more | 8 hr |
| Apr 21, 11:27 PM CDT | Mesoscale Discussion | SPC | Barton, Bates, Buchanan, Cass, Clay, Jackson and 3 more | 3 hr |
| Apr 22, 2:48 AM CDT | Severe Thunderstorm Watch | SPC | Andrew, Bates, Buchanan, Cass, Clay, Clinton and 4 more | 4 hr |
| Apr 22, 5:18 AM CDT | Mesoscale Discussion | SPC | Buchanan, Caldwell, Cass, Clay, Clinton, Jackson and 2 more | 87 min |
| Apr 22, 10:09 AM CDT | Mesoscale Discussion | SPC | Bollinger, Cape Girardeau, Crawford, Dent, Franklin, Gasconade and 17 more | 66 min |
| Apr 22, 1:04 PM CDT | Mesoscale Discussion | SPC | Barry, Barton, Benton, Callaway, Camden, Cedar and 40 more | 116 min |
| Apr 22, 3:34 PM CDT | Tornado Watch | SPC | Audrain, Barry, Benton, Boone, Callaway, Camden and 46 more | 6 hr |
| Apr 22, 5:21 PM CDT | Mesoscale Discussion | SPC | Audrain, Barry, Boone, Callaway, Camden, Christian and 36 more | 114 min |
| Apr 22, 5:27 PM CDT | Mesoscale Discussion | SPC | Cape Girardeau, Perry, Sainte Genevieve, Saint Francois | 33 min |
| Apr 22, 5:49 PM CDT | Tornado Watch | SPC | Bollinger, Butler, Cape Girardeau, Carter, Iron, Madison and 9 more | 7 hr |
Nearby
Mesoscale Discussions in Missouri, 2011Mesoscale Discussions in Arkansas, 2011Mesoscale Discussions in Oklahoma, 2011Every mesoscale discussion in 2011
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.