Alert archive / Missouri / Mesoscale Discussions in 2008

Mesoscale Discussion 1850

July 22, 20086 counties in Iowa; 29 counties in Missouri; Cass County, Sarpy County, Nebraska

The Storm Prediction Center issued this mesoscale discussion at Jul 22, 2008, 3:18 AM CDT for 6 counties in Iowa; 29 counties in Missouri; Cass County, Sarpy County, Nebraska. It was in force for 87 min.

The area

The outline as issued.

The facts

Issued
Jul 22, 2008, 3:18 AM CDT (08:18 UTC)
Expired
Jul 22, 2008, 4:45 AM CDT
In force
87 min
Issued by
the Storm Prediction Center
All 37 counties

Fremont County, IA, Mills County, IA, Montgomery County, IA, Page County, IA, Pottawattamie County, IA, Taylor County, IA, Adair County, MO, Andrew County, MO, Atchison County, MO, Audrain County, MO, Buchanan County, MO, Caldwell County, MO, Carroll County, MO, Chariton County, MO, Clay County, MO, Clinton County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Holt County, MO, Howard County, MO, Linn County, MO, Livingston County, MO, Macon County, MO, Mercer County, MO, Monroe County, MO, Nodaway County, MO, Randolph County, MO, Ray County, MO, Saline County, MO, Shelby County, MO, Sullivan County, MO, Worth County, MO, Cass County, NE, Sarpy County, NE

The radar

The Pleasant Hill radar (KEAX), 149 km from the middle of the area, began a volume at 08:19 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

Topeka, KS (KTOP), launched 00:00Z, 8.3 hours before the alert went out and 183 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, Topeka, KS at 00:00Z on 2008-07-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1165 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, Topeka, KS at 00:00Z on 2008-07-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -2 square meters per square second.1939Sfc1 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
1165 J/kg
Mixed-layer CIN
-26 J/kg
Mixed-layer LCL
2536 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
-2 m²/s²
0-3 km storm-relative helicity
44 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
Jul 21, 7:16 PM CDTMesoscale DiscussionSPCAppanoose, Decatur, Wayne89 min
Jul 21, 8:00 PM CDTMesoscale DiscussionSPCAudrain, Boone, Buchanan, Caldwell, Callaway, Carroll and 29 more90 min
Jul 21, 9:14 PM CDTSevere Thunderstorm WatchSPCAudrain, Boone, Callaway, Cole, Franklin, Gasconade and 10 more6 hr
Jul 21, 10:38 PM CDTMesoscale DiscussionSPCCallaway, Franklin, Gasconade, Jefferson, Lincoln, Montgomery and 5 more97 min
Jul 22, 4:47 AM CDTMesoscale DiscussionSPCBollinger, Butler, Cape Girardeau, Carter, Crawford, Dent and 15 more88 min
Jul 22, 9:34 AM CDTMesoscale DiscussionSPCBoone, Camden, Cole, Cooper, Crawford, Dent and 12 more56 min
Jul 22, 11:55 AM CDTMesoscale DiscussionSPCDunklin, Pemiscot3 hr
Jul 22, 2:25 PM CDTMesoscale DiscussionSPCBarry, Butler, Carter, Howell, Jasper, McDonald and 7 more2 hr
Jul 22, 3:02 PM CDTMesoscale DiscussionSPCBanner, Kimball, Scotts Bluff, Sioux88 min
Jul 22, 3:25 PM CDTSevere Thunderstorm WatchSPCBanner, Box Butte, Cheyenne, Dawes, Kimball, Morrill and 2 more7 hr

Nearby

Mesoscale Discussions in Missouri, 2008Mesoscale Discussions in Iowa, 2008Mesoscale Discussions in Nebraska, 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.