Alert archive / Missouri / Mesoscale Discussions in 2011
Mesoscale Discussion 2016
The Storm Prediction Center issued this mesoscale discussion at Aug 19, 2011, 4:08 AM CDT for 9 counties in Arkansas; 28 counties in Missouri. It was in force for 67 min.
The area
The outline as issued.
The facts
- Issued
- Aug 19, 2011, 4:08 AM CDT (09:08 UTC)
- Expired
- Aug 19, 2011, 5:15 AM CDT
- In force
- 67 min
- Issued by
- the Storm Prediction Center
All 37 counties
Baxter County, AR, Benton County, AR, Boone County, AR, Carroll County, AR, Fulton County, AR, Madison County, AR, Marion County, AR, Newton County, AR, Searcy County, AR, Barry County, MO, Camden County, MO, Christian County, MO, Crawford County, MO, Dallas County, MO, Dent County, MO, Douglas County, MO, Franklin County, MO, Gasconade County, MO, Greene County, MO, Howell County, MO, Iron County, MO, Laclede County, MO, Maries County, MO, Miller County, MO, Oregon County, MO, Osage County, MO, Ozark County, MO, Phelps County, MO, Pulaski County, MO, Reynolds County, MO, Shannon County, MO, Stone County, MO, Taney County, MO, Texas County, MO, Washington County, MO, Webster County, MO, Wright County, MO
The radar
The Springfield radar (KSGF), 81 km from the middle of the area, began a volume at 09:11 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 00:00Z, 9.1 hours before the alert went out and 121 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
- 3816 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 1273 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 48 m²/s²
- 0-3 km storm-relative helicity
- 180 m²/s²
- Significant tornado parameter
- 1.6
- Supercell composite
- 11.7
The text
As transmitted, in the capitals the NWS used until 2016.
014
ACUS11 KWNS 190909
SWOMCD
SPC MCD 190908
MOZ000-ARZ000-191015-
MESOSCALE DISCUSSION 2016
NWS STORM PREDICTION CENTER NORMAN OK
0408 AM CDT FRI AUG 19 2011
AREAS AFFECTED...CNTRL/SRN MO
CONCERNING...SEVERE THUNDERSTORM WATCH 789...790...
VALID 190908Z - 191015Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH
789...790...CONTINUES.
THOUGH ISOLATED OCCURRENCES OF DAMAGING WINDS AND HAIL WILL REMAIN
POSSIBLE...THE OVERALL SEVERE THREAT APPEARS TO BE DIMINISHING AND
AN ADDITIONAL DOWNSTREAM WATCH IS NOT ANTICIPATED.
AS OF 0900Z...RADAR IMAGERY INDICATED THE LEADING EDGE OF A BOWING
MCS EXTENDING FROM FRANKLIN AND WASHINGTON COUNTIES SWWD TO
CHRISTIAN COUNTY MO. DESPITE THE SYSTEM MOTION OF 290/40 KT...IT
APPEARS THAT GRADUALLY ACCUMULATING CONVECTIVE INHIBITION IS
BEGINNING TO LIMIT DOWNWARD MOMENTUM TRANSFER OF STRONGER WINDS
OBSERVED IN BASE VELOCITY DATA. AS SUCH...THE POTENTIAL FOR MORE
CONTINUOUS/WIDESPREAD DAMAGING WINDS SHOULD CONTINUE TO DIMINISH.
..MEAD.. 08/19/2011
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...PAH...LSX...LZK...SGF...TSA...
LAT...LON 37219342 38019310 38519198 38609135 38249074 37599052
36569147 35949211 35829310 36029418 36569445 37219342SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 11:46 PM CDT | Mesoscale Discussion | SPC | Baxter, Benton, Boone, Carroll, Madison, Marion and 2 more | 59 min |
| Aug 19, 12:02 AM CDT | Severe Thunderstorm Watch | SPC | Baxter, Benton, Boone, Carroll, Fulton, Izard and 6 more | 5 hr |
| Aug 19, 1:38 AM CDT | Mesoscale Discussion | SPC | Baxter, Benton, Boone, Carroll, Fulton, Madison and 5 more | 67 min |
| Aug 18, 8:09 PM CDT | Severe Thunderstorm Watch | SPC | Bates, Benton, Buchanan, Caldwell, Camden, Carroll and 18 more | 7 hr |
| Aug 18, 8:29 PM CDT | Mesoscale Discussion | SPC | Andrew, Atchison, DeKalb, Gentry, Holt, Nodaway and 1 more | 61 min |
| Aug 18, 9:52 PM CDT | Mesoscale Discussion | SPC | Andrew, Atchison, Daviess, DeKalb, Gentry, Harrison and 3 more | 53 min |
| Aug 19, 1:08 AM CDT | Severe Thunderstorm Watch | SPC | Cole, Crawford, Franklin, Gasconade, Iron, Madison and 5 more | 4 hr |
Nearby
Mesoscale Discussions in Missouri, 2011Mesoscale Discussions in Arkansas, 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.