Alert archive / Illinois / Mesoscale Discussions in 2005

Mesoscale Discussion 2425

November 15, 200540 counties in Illinois; 32 counties in Indiana; 25 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at Nov 15, 2005, 8:31 AM CST for 40 counties in Illinois; 32 counties in Indiana; 25 counties in Missouri. It was in force for 59 min.

The area

The outline as issued.

The facts

Issued
Nov 15, 2005, 8:31 AM CST (14:31 UTC)
Expired
Nov 15, 2005, 9:30 AM CST
In force
59 min
Issued by
the Storm Prediction Center
All 97 counties

Bond County, IL, Calhoun County, IL, Christian County, IL, Clark County, IL, Clay County, IL, Clinton County, IL, Coles County, IL, Crawford County, IL, Cumberland County, IL, Douglas County, IL, Edgar County, IL, Edwards County, IL, Effingham County, IL, Fayette County, IL, Franklin County, IL, Greene County, IL, Hamilton County, IL, Jasper County, IL, Jefferson County, IL, Jersey County, IL, Lawrence County, IL, Macon County, IL, Macoupin County, IL, Madison County, IL, Marion County, IL, Monroe County, IL, Montgomery County, IL, Morgan County, IL, Moultrie County, IL, Perry County, IL, Randolph County, IL, Richland County, IL, Saint Clair County, IL, Sangamon County, IL, Scott County, IL, Shelby County, IL, Wabash County, IL, Washington County, IL, Wayne County, IL, White County, IL, Bartholomew County, IN, Boone County, IN, Brown County, IN, Clay County, IN, Crawford County, IN, Daviess County, IN, Dubois County, IN, Gibson County, IN, Greene County, IN, Hamilton County, IN, Hancock County, IN, Hendricks County, IN, Jackson County, IN, Jennings County, IN, Johnson County, IN, Knox County, IN, Lawrence County, IN, Marion County, IN, Martin County, IN, Monroe County, IN, Montgomery County, IN, Morgan County, IN, Orange County, IN, Owen County, IN, Parke County, IN, Pike County, IN, Putnam County, IN, Shelby County, IN, Sullivan County, IN, Vermillion County, IN, Vigo County, IN, Washington County, IN, Benton County, MO, Callaway County, MO, Camden County, MO, City of Saint Louis, MO, Cole County, MO, Crawford County, MO, Dallas County, MO, Franklin County, MO, Gasconade County, MO, Jefferson County, MO, Lincoln County, MO, Maries County, MO, Miller County, MO, Moniteau County, MO, Montgomery County, MO, Morgan County, MO, Osage County, MO, Phelps County, MO, Pike County, MO, Pulaski County, MO, Saint Charles County, MO, Saint Louis County, MO, Sainte Genevieve County, MO, Warren County, MO, Washington County, MO

The watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 2.5 hours before the alert went out and 142 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, Lincoln, IL at 12:00Z on 2005-11-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 joules per kilogram.LCLEL10008507005003002001001 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, Lincoln, IL at 12:00Z on 2005-11-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 75 square meters per square second.1939587897117136Sfc1 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
1 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
447 m above ground
0-6 km bulk shear
79 kt
0-1 km storm-relative helicity
75 m²/s²
0-3 km storm-relative helicity
111 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.

000 
ACUS11 KWNS 151432
SWOMCD
SPC MCD 151431 
INZ000-ILZ000-MOZ000-151530-

MESOSCALE DISCUSSION 2425
NWS STORM PREDICTION CENTER NORMAN OK
0831 AM CST TUE NOV 15 2005

AREAS AFFECTED...ECNTRL MO...CNTRL/SRN IL...CNTRL/SRN IND

CONCERNING...SEVERE THUNDERSTORM POTENTIAL 

VALID 151431Z - 151530Z

TORNADO WATCH WILL LIKELY BE NEEDED BY 15-16Z FOR PARTS OF THE AREA.


14Z MESOANALYSIS PLACES A WARM FRONT ALONG THE OH RVR WEST TO A
DEVELOPING LOW OVER SWRN MO.  A SECONDARY WARM FRONT WAS FARTHER
N...FROM THE LOW NEWD INTO SCNTRL IL AND CNTRL IND.  AS THE PCPN
SHIELD N OF THE OH RVR BECOMES MORE CELLULAR...THE WARM FRONT IS
EXPECTED TO REDEVELOP QUICKLY NWD TO WHERE THE SECONDARY WARM FRONT
IS LOCATED.  WARM MOIST AIR MASS...VERY STRONG LOW/DEEP LAYER SHEAR
WILL BE CONDUCIVE FOR SUPERCELLS AND TORNADOES.

..RACY.. 11/15/2005

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...LMK...IND...PAH...ILX...LSX...SGF...EAX...

38559329 39849010 40088709 40058568 39178547 38378601
38098740 37659329

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Nov 14, 8:56 PM CSTMesoscale DiscussionSPCAlexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 8 more3 hr
Nov 14, 10:00 PM CSTTornado WatchSPCAlexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 8 more7 hr
Nov 15, 2:22 AM CSTMesoscale DiscussionSPCAlexander, Gallatin, Hardin, Johnson, Massac, Pope and 4 more113 min
Nov 15, 7:42 AM CSTTornado WatchSPCAlexander, Gallatin, Hardin, Jackson, Johnson, Massac and 5 more9 hr
Nov 15, 10:13 AM CSTMesoscale DiscussionSPCAlexander, Bond, Clay, Clinton, Crawford, Cumberland and 29 more2 hr
Nov 15, 10:13 AM CSTTornado WatchSPCBond, Calhoun, Champaign, Christian, Clark, Clay and 41 more7 hr
Nov 15, 12:34 PM CSTMesoscale DiscussionSPCAlexander, Bond, Calhoun, Champaign, Christian, Clark and 47 more116 min
Nov 15, 1:32 PM CSTMesoscale DiscussionSPCClark, Clay, Clinton, Crawford, Cumberland, Edgar and 25 more88 min
Nov 15, 11:55 AM CSTMesoscale DiscussionSPCAdams, Bartholomew, Blackford, Brown, Clark, Dearborn and 30 more2 hr
Nov 15, 2:01 PM CSTTornado WatchSPCAdams, Allen, Bartholomew, Blackford, Boone, Brown and 61 more7 hr
Nov 15, 3:40 PM CSTMesoscale DiscussionSPCAllen, DeKalb, Kosciusko, LaGrange, Marshall, Noble and 2 more95 min
Nov 14, 9:28 PM CSTTornado WatchSPCBarry, Christian, Douglas, Howell, McDonald, Newton and 5 more8 hr
Nov 14, 11:08 PM CSTMesoscale DiscussionSPCBarton, Bates, Benton, Camden, Cedar, Dade and 12 more97 min
Nov 15, 2:57 AM CSTMesoscale DiscussionSPCBarton, Bates, Cass, Cedar, Dade, Henry and 3 more63 min
Nov 15, 6:04 AM CSTMesoscale DiscussionSPCBarry, Bollinger, Butler, Cape Girardeau, Carter, Christian and 27 more116 min
Nov 15, 7:02 AM CSTTornado WatchSPCBarry, Christian, Dent, Douglas, Greene, Howell and 11 more8 hr
Nov 15, 7:47 AM CSTMesoscale DiscussionSPCAtchison, Holt, Nodaway4 hr

Nearby

Mesoscale Discussions in Illinois, 2005Mesoscale Discussions in Indiana, 2005Mesoscale Discussions in Missouri, 2005Every mesoscale discussion in 2005

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.