Alert archive / Missouri / Mesoscale Discussions in 2006
Mesoscale Discussion 708
The Storm Prediction Center issued this mesoscale discussion at May 1, 2006, 2:22 PM CDT for 5 states. It was in force for 53 min.
The area
The outline as issued.
The facts
- Issued
- May 1, 2006, 2:22 PM CDT (19:22 UTC)
- Expired
- May 1, 2006, 3:15 PM CDT
- In force
- 53 min
- Issued by
- the Storm Prediction Center
All 69 counties
Clay County, AR, Randolph County, AR, Alexander County, IL, Bond County, IL, Clinton County, IL, Franklin County, IL, Jackson County, IL, Johnson County, IL, Madison County, IL, Massac County, IL, Monroe County, IL, Perry County, IL, Pope County, IL, Pulaski County, IL, Randolph County, IL, Saint Clair County, IL, Union County, IL, Washington County, IL, Williamson County, IL, Ballard County, KY, Calloway County, KY, Carlisle County, KY, Fulton County, KY, Graves County, KY, Hickman County, KY, Marshall County, KY, McCracken County, KY, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Carter County, MO, Christian County, MO, City of Saint Louis, MO, Crawford County, MO, Dent County, MO, Douglas County, MO, Dunklin County, MO, Franklin County, MO, Howell County, MO, Iron County, MO, Jefferson County, MO, Madison County, MO, Mississippi County, MO, New Madrid County, MO, Oregon County, MO, Ozark County, MO, Pemiscot County, MO, Perry County, MO, Reynolds County, MO, Ripley County, MO, Saint Charles County, MO, Saint Francois County, MO, Saint Louis County, MO, Sainte Genevieve County, MO, Scott County, MO, Shannon County, MO, Stoddard County, MO, Stone County, MO, Taney County, MO, Texas County, MO, Washington County, MO, Wayne County, MO, Webster County, MO, Wright County, MO, Dyer County, TN, Gibson County, TN, Lake County, TN, Obion County, TN, Weakley County, TN
The radar
The St Louis radar (KLSX), 156 km from the middle of the area, began a volume at 19:25 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
Springfield, MO (KSGF), launched 12:00Z, 7.4 hours before the alert went out and 235 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1520 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 161 m²/s²
- 0-3 km storm-relative helicity
- 288 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 ACUS11 KWNS 011922 SWOMCD SPC MCD 011922 KYZ000-TNZ000-ILZ000-MOZ000-ARZ000-012015- MESOSCALE DISCUSSION 0708 NWS STORM PREDICTION CENTER NORMAN OK 0222 PM CDT MON MAY 01 2006 AREAS AFFECTED...EAST CENTRAL THROUGH SRN/SERN MO...SWRN IL...FAR WRN KY...FAR NWRN TN...FAR NRN AR CONCERNING...SEVERE THUNDERSTORM POTENTIAL VALID 011922Z - 012015Z WW MAY BE REQUIRED. THUNDERSTORMS EXPECTED TO DEVELOP MID-LATE AFTERNOON ACROSS EAST CENTRAL MO...THEN SWWD ALONG COLD FRONT INTO SRN MO. HAIL/STRONG WIND GUSTS SHOULD BE PRIMARY THREATS WITH STRONGEST ACTIVITY. 18Z MESOSCALE SURFACE ANALYSIS SHOWED A BOUNDARY EXTENDING FROM WRN IL SWWD THROUGH EAST CENTRAL-SWRN MO INTO NERN-CENTRAL OK. LATEST OBJECTIVE ANALYSES INDICATED INHIBITION HAS WEAKENED ENOUGH FROM EAST CENTRAL MO SWWD INTO CENTRAL MO NEAR TBN TO SUPPORT SURFACE BASED STORMS. HOWEVER...WEAK SHORT WAVE RIDGING ACROSS THIS REGION ATTM PER TRENDS IN WIND PROFILER DATA/12-18Z SOUNDINGS APPEARS TO BE INHIBITING DEEP MOIST CONVECTION FROM FORMING THUS FAR. LARGE SCALE ASCENT SPREADING EWD WITH SHORT WAVE TROUGH...NOW OVER CENTRAL KS/NRN OK...AND ADDITIONAL SURFACE HEATING SHOULD FURTHER WEAKEN CAP PER 18Z SGF SOUNDING...WITH INITIAL TSTM DEVELOPMENT LIKELY ACROSS EAST CENTRAL MO WHERE LOW-LEVEL CONVERGENCE IS MAXIMIZED. MLCAPE VALUES APPROACHING 1000 J/KG COMBINED WITH INCREASING DEEP LAYER SHEAR EXPECTED TO SUPPORT ORGANIZED STORMS. ..PETERS.. 05/01/2006 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...PAH...MEG...LSX...LZK...SGF...TSA... 37539211 38129135 38859083 38898934 36728809 35908885 36499209 36489353 37099377
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 30, 7:40 PM CDT | Severe Thunderstorm Watch | SPC | Benton, Boone, Carroll, Crawford, Franklin, Johnson and 7 more | 4 hr |
| Apr 30, 9:40 PM CDT | Mesoscale Discussion | SPC | Benton, Boone, Carroll, Crawford, Franklin, Johnson and 5 more | 95 min |
| May 1, 4:17 PM CDT | Mesoscale Discussion | SPC | Benton, Carroll, Crawford, Madison, Washington | 118 min |
| May 1, 5:17 PM CDT | Tornado Watch | SPC | Baxter, Benton, Boone, Carroll, Crawford, Franklin and 11 more | 7 hr |
| May 1, 6:59 PM CDT | Mesoscale Discussion | SPC | Baxter, Benton, Boone, Carroll, Crawford, Franklin and 8 more | 91 min |
| Apr 30, 7:45 PM CDT | Mesoscale Discussion | SPC | Alexander, Franklin, Gallatin, Hamilton, Hardin, Johnson and 7 more | 60 min |
Nearby
Mesoscale Discussions in Missouri, 2006Mesoscale Discussions in Illinois, 2006Mesoscale Discussions in Kentucky, 2006Every mesoscale discussion in 2006
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.