Alert archive / Missouri / Mesoscale Discussions in 2005

Mesoscale Discussion 2286

September 28, 200521 counties in Illinois; Des Moines County, Lee County, Iowa; 29 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at Sep 28, 2005, 11:56 AM CDT for 21 counties in Illinois; Des Moines County, Lee County, Iowa; 29 counties in Missouri. It was in force for 94 min.

The area

The outline as issued.

The facts

Issued
Sep 28, 2005, 11:56 AM CDT (16:56 UTC)
Expired
Sep 28, 2005, 1:30 PM CDT
In force
94 min
Issued by
the Storm Prediction Center
All 52 counties

Des Moines County, IA, Lee County, IA, Adams County, IL, Brown County, IL, Calhoun County, IL, Cass County, IL, Fulton County, IL, Greene County, IL, Hancock County, IL, Henderson County, IL, Jersey County, IL, Knox County, IL, Macoupin County, IL, Mason County, IL, McDonough County, IL, Menard County, IL, Morgan County, IL, Peoria County, IL, Pike County, IL, Schuyler County, IL, Scott County, IL, Stark County, IL, Warren County, IL, Audrain County, MO, Benton County, MO, Boone County, MO, Callaway County, MO, Camden County, MO, City of Saint Louis, MO, Clark County, MO, Cole County, MO, Cooper County, MO, Franklin County, MO, Gasconade County, MO, Howard County, MO, Lewis County, MO, Lincoln County, MO, Maries County, MO, Marion County, MO, Miller County, MO, Moniteau County, MO, Monroe County, MO, Montgomery County, MO, Morgan County, MO, Osage County, MO, Pike County, MO, Ralls County, MO, Randolph County, MO, Saint Charles County, MO, Saint Louis County, MO, Shelby County, MO, Warren County, MO

The radar

The St Louis radar (KLSX), 112 km from the middle of the area, began a volume at 16:57 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

Lincoln, IL (KILX), launched 12:00Z, 4.9 hours before the alert went out and 288 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 2005-09-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2005-09-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 63 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
947 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
63 m²/s²
0-3 km storm-relative helicity
79 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.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 28, 6:09 AM CDTMesoscale DiscussionSPCBarton, Bates, Cass, Cedar, Henry, Jackson and 6 more2 hr
Sep 28, 2:59 PM CDTMesoscale DiscussionSPCBarry, Barton, Camden, Cedar, Christian, Dade and 15 more61 min
Sep 28, 3:15 PM CDTSevere Thunderstorm WatchSPCBarry, Barton, Cedar, Christian, Dade, Dallas and 16 more6 hr
Sep 28, 4:51 PM CDTMesoscale DiscussionSPCBollinger, Butler, Cape Girardeau, Carter, Dunklin, Howell and 13 more84 min
Sep 28, 5:30 PM CDTSevere Thunderstorm WatchSPCButler, Carter, Oregon, Ripley, Scott, Shannon and 2 more6 hr

Nearby

Mesoscale Discussions in Missouri, 2005Mesoscale Discussions in Illinois, 2005Mesoscale Discussions in Iowa, 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; radar from the NEXRAD Level II archive.