Alert archive / Missouri / Mesoscale Discussions in 2008

Mesoscale Discussion 19

January 7, 20088 counties in Illinois; Crawford County, Kansas; 54 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at Jan 7, 2008, 6:57 PM CST for 8 counties in Illinois; Crawford County, Kansas; 54 counties in Missouri. It was in force for 93 min.

The area

The outline as issued.

The facts

Issued
Jan 7, 2008, 6:57 PM CST (00:57 UTC)
Expired
Jan 7, 2008, 8:30 PM CST
In force
93 min
Issued by
the Storm Prediction Center
All 63 counties

Calhoun County, IL, Greene County, IL, Jersey County, IL, Madison County, IL, Monroe County, IL, Pike County, IL, Saint Clair County, IL, Scott County, IL, Crawford County, KS, Audrain County, MO, Barton County, MO, Benton County, MO, Boone County, MO, Callaway County, MO, Camden County, MO, Cedar County, MO, City of Saint Louis, MO, Cole County, MO, Cooper County, MO, Crawford County, MO, Dade County, MO, Dallas County, MO, Dent County, MO, Douglas County, MO, Franklin County, MO, Gasconade County, MO, Greene County, MO, Henry County, MO, Hickory County, MO, Howard County, MO, Howell County, MO, Iron County, MO, Jefferson County, MO, Laclede County, MO, Lincoln County, MO, Madison County, MO, Maries County, MO, Miller County, MO, Moniteau County, MO, Monroe County, MO, Montgomery County, MO, Morgan County, MO, Osage County, MO, Pettis County, MO, Phelps County, MO, Pike County, MO, Polk County, MO, Pulaski County, MO, Ralls County, MO, Randolph County, MO, Reynolds County, MO, Saint Charles County, MO, Saint Francois County, MO, Saint Louis County, MO, Sainte Genevieve County, MO, Shannon County, MO, St. Clair County, MO, Texas County, MO, Vernon County, MO, Warren County, MO, Washington County, MO, Webster County, MO, Wright County, MO

The radar

The St Louis radar (KLSX), 131 km from the middle of the area, began a volume at 00:58 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 00:00Z, 1.0 hours before the alert went out and 210 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, Springfield, MO at 00:00Z on 2008-01-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 765 joules per kilogram.LCLLFCEL10008507005003002001001 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, Springfield, MO at 00:00Z on 2008-01-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 281 square meters per square second.1939587897Sfc1 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
765 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
955 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
281 m²/s²
0-3 km storm-relative helicity
338 m²/s²
Significant tornado parameter
1.7
Supercell composite
7.2

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
Jan 7, 6:11 PM CSTMesoscale DiscussionSPCAdams, Brown, Pike, Schuyler94 min
Jan 7, 7:03 PM CSTMesoscale DiscussionSPCChampaign, Clark, Coles, Crawford, Cumberland, Douglas and 4 more117 min
Jan 7, 7:48 PM CSTTornado Watch PDSSPCBond, Calhoun, Clinton, Fayette, Greene, Jackson and 12 more9 hr
Jan 7, 10:04 PM CSTMesoscale DiscussionSPCCalhoun86 min
Jan 7, 10:12 PM CSTMesoscale DiscussionSPCChampaign, Christian, Clark, Coles, Cumberland, DeWitt and 12 more2 hr
Jan 8, 11:27 AM CSTMesoscale DiscussionSPCAlexander, Gallatin, Hardin, Jackson, Johnson, Massac and 5 more2 hr
Jan 8, 11:40 AM CSTMesoscale DiscussionSPCJo Daviess5 hr
Jan 8, 12:22 PM CSTMesoscale DiscussionSPCAlexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 10 more83 min
Jan 8, 1:11 PM CSTMesoscale DiscussionSPCGallatin, Hardin, Massac, Pope2 hr
Jan 8, 1:26 PM CSTTornado WatchSPCGallatin, Hardin, Massac, Pope8 hr
Jan 7, 8:25 PM CSTMesoscale DiscussionSPCAllen, Bourbon, Chautauqua, Cherokee, Crawford, Labette and 4 more65 min
Jan 7, 8:55 PM CSTSevere Thunderstorm WatchSPCAllen, Bourbon, Chautauqua, Cherokee, Crawford, Labette and 4 more8 hr
Jan 7, 11:18 PM CSTMesoscale DiscussionSPCAllen, Bourbon, Chautauqua, Cherokee, Crawford, Labette and 4 more87 min
Jan 8, 3:44 AM CSTMesoscale DiscussionSPCAllen, Bourbon, Chautauqua, Cherokee, Crawford, Elk and 5 more91 min
Jan 8, 2:02 AM CSTMesoscale DiscussionSPCDent, Douglas, Shannon, Texas, Wright118 min
Jan 8, 8:34 AM CSTTornado WatchSPCButler, Dunklin, Mississippi, New Madrid, Pemiscot, Ripley and 2 more5 hr

Nearby

Mesoscale Discussions in Missouri, 2008Mesoscale Discussions in Illinois, 2008Mesoscale Discussions in Kansas, 2008Every mesoscale discussion in 2008

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.