Alert archive / Kansas / Mesoscale Discussions in 2008

Mesoscale Discussion 1671

July 2, 20084 states

The Storm Prediction Center issued this mesoscale discussion at Jul 2, 2008, 5:59 PM CDT for 4 states. It was in force for 61 min.

The area

The outline as issued.

The facts

Issued: Jul 2, 2008, 5:59 PM CDT (22:59 UTC)
Expired: Jul 2, 2008, 7:00 PM CDT
In force: 61 min
Issued by: the Storm Prediction Center

All 39 counties

Taylor County, IA, Anderson County, KS, Atchison County, KS, Brown County, KS, Coffey County, KS, Doniphan County, KS, Douglas County, KS, Franklin County, KS, Jackson County, KS, Jefferson County, KS, Johnson County, KS, Leavenworth County, KS, Lyon County, KS, Miami County, KS, Nemaha County, KS, Osage County, KS, Pottawatomie County, KS, Riley County, KS, Shawnee County, KS, Wabaunsee County, KS, Wyandotte County, KS, Andrew County, MO, Atchison County, MO, Buchanan County, MO, Caldwell County, MO, Clay County, MO, Clinton County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Harrison County, MO, Holt County, MO, Jackson County, MO, Nodaway County, MO, Platte County, MO, Ray County, MO, Worth County, MO, Nemaha County, NE, Richardson County, NE

The radar

The Pleasant Hill radar (KEAX), 105 km from the middle of the area, began a volume at 23:02 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.

Severe Thunderstorm Watch 655Jul 2, 6:20 PM CDT

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 11.0 hours before the alert went out and 228 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 475 J/kg
Mixed-layer CIN: -201 J/kg
Mixed-layer LCL: 1738 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: 9 m²/s²
0-3 km storm-relative helicity: -139 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.

Issued	Product	Office	Counties	Lasted
Jul 2, 9:42 AM CDT	Mesoscale Discussion	SPC	Cedar, Clinton, Delaware, Dubuque, Jackson, Jones and 1 more	2 hr
Jul 2, 1:19 PM CDT	Mesoscale Discussion	SPC	Fremont, Harrison, Mills, Monona, Pottawattamie, Shelby	116 min
Jul 2, 1:55 PM CDT	Mesoscale Discussion	SPC	Allamakee, Benton, Black Hawk, Boone, Bremer, Buchanan and 37 more	95 min
Jul 2, 3:08 PM CDT	Severe Thunderstorm Watch	SPC	Cedar, Clinton, Delaware, Des Moines, Dubuque, Henry and 11 more	7 hr
Jul 2, 3:32 PM CDT	Mesoscale Discussion	SPC	Barber, Clark, Comanche, Harper, Meade, Seward and 2 more	88 min
Jul 2, 6:16 PM CDT	Severe Thunderstorm Watch	SPC	Anderson, Atchison, Brown, Coffey, Doniphan, Douglas and 14 more	6 hr
Jul 2, 2:27 PM CDT	Severe Thunderstorm Watch	SPC	Box Butte, Dawes, Sioux	8 hr
Jul 2, 5:57 PM CDT	Mesoscale Discussion	SPC	Box Butte, Dawes, Morrill, Scotts Bluff, Sioux	63 min

Nearby

Mesoscale Discussions in Kansas, 2008 Mesoscale Discussions in Missouri, 2008 Mesoscale Discussions in Nebraska, 2008 Every 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.