Alert archive / Missouri / Mesoscale Discussions in 2012
Mesoscale Discussion 1189
The Storm Prediction Center issued this mesoscale discussion at Jun 16, 2012, 3:38 PM CDT for 12 counties in Illinois; 14 counties in Iowa; 16 counties in Missouri. It was in force for 97 min.
The area
The outline as issued.
The facts
- Issued
- Jun 16, 2012, 3:38 PM CDT (20:38 UTC)
- Expired
- Jun 16, 2012, 5:15 PM CDT
- In force
- 97 min
- Issued by
- the Storm Prediction Center
All 42 counties
Appanoose County, IA, Clinton County, IA, Davis County, IA, Des Moines County, IA, Henry County, IA, Jefferson County, IA, Keokuk County, IA, Lee County, IA, Louisa County, IA, Muscatine County, IA, Scott County, IA, Van Buren County, IA, Wapello County, IA, Washington County, IA, Carroll County, IL, Fulton County, IL, Hancock County, IL, Henderson County, IL, Henry County, IL, Knox County, IL, McDonough County, IL, Mercer County, IL, Rock Island County, IL, Stark County, IL, Warren County, IL, Whiteside County, IL, Adair County, MO, Caldwell County, MO, Clark County, MO, Daviess County, MO, DeKalb County, MO, Grundy County, MO, Knox County, MO, Lewis County, MO, Linn County, MO, Livingston County, MO, Macon County, MO, Mercer County, MO, Putnam County, MO, Schuyler County, MO, Scotland County, MO, Sullivan County, MO
The radar
The Des Moines radar (KDMX), 167 km from the middle of the area, began a volume at 20:41 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
Davenport, (KDVN), launched 12:00Z, 8.6 hours before the alert went out and 200 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
- 208 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 515 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 130 m²/s²
- 0-3 km storm-relative helicity
- 101 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 2.2
The text
As transmitted, in the capitals the NWS used until 2016.
576 ACUS11 KWNS 162038 SWOMCD SPC MCD 162038 ILZ000-IAZ000-MOZ000-162215- MESOSCALE DISCUSSION 1189 NWS STORM PREDICTION CENTER NORMAN OK 0338 PM CDT SAT JUN 16 2012 AREAS AFFECTED...NRN MO...SERN IA AND WRN/NWRN IL CONCERNING...SEVERE THUNDERSTORM WATCH 400... VALID 162038Z - 162215Z THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 400 CONTINUES. SUMMARY...THREAT FOR ISOLATED DAMAGING WIND AND HAIL WILL PERSIST THROUGH THE EARLY EVENING FROM NRN MO...SERN IA INTO WRN AND NWRN IL. DISCUSSION...STORMS CONTINUE DEVELOPING IN ASSOCIATION WITH COMPACT VORT MAX FROM SRN IA INTO NRN MO AS WELL AS FARTHER EAST ALONG CONFLUENCE AXIS IN NWRN IL. MORE ROBUST STORMS WILL REMAIN IN VICINITY OF THE PROGRESSIVE VORT MAX WHERE VERTICAL SHEAR FROM 35-40 KT IS SUFFICIENT FOR ACTIVITY TO BECOME A LITTLE BETTER ORGANIZED WITH POTENTIAL FOR FEW STORMS TO DEVELOP MID LEVEL UPDRAFT ROTATION AND EVOLVE INTO BOWING SEGMENTS. ACTIVITY WILL CONTINUE EWD THROUGH INSTABILITY AXIS FROM NERN MO...SERN IA INTO NRN IL DURING THE EVENING. ..DIAL.. 06/16/2012 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...LOT...ILX...LSX...DVN...DMX...EAX... LAT...LON 40059445 41509209 42228951 40388985 39269430 40059445
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 16, 12:42 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Bureau, Carroll, Fulton, Hancock and 13 more | 63 min |
| Jun 16, 2:45 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Brown, Bureau, Calhoun, Carroll, Cass and 23 more | 6 hr |
| Jun 16, 6:10 PM CDT | Mesoscale Discussion | SPC | Bureau, DeKalb, DuPage, Grundy, Henry, Kane and 10 more | 95 min |
| Jun 16, 6:40 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Cook, DeKalb, DuPage, Ford, Grundy and 12 more | 6 hr |
| Jun 16, 11:40 AM CDT | Mesoscale Discussion | SPC | Adams, Appanoose, Clarke, Decatur, Lucas, Marion and 7 more | 95 min |
| Jun 16, 12:35 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Adams, Appanoose, Cass, Clarke, Davis and 12 more | 5 hr |
| Jun 16, 5:36 PM CDT | Mesoscale Discussion | SPC | Audrain, Barton, Bates, Benton, Boone, Callaway and 32 more | 84 min |
Nearby
Mesoscale Discussions in Missouri, 2012Mesoscale Discussions in Iowa, 2012Mesoscale Discussions in Illinois, 2012Every mesoscale discussion in 2012
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.