Alert archive / Nebraska / Mesoscale Discussions in 2003

Mesoscale Discussion 2194

August 19, 2003Decatur County, Norton County, Phillips County, Kansas; 24 counties in Nebraska; Charles Mix County, Gregory County, Tripp County, South Dakota

The Storm Prediction Center issued this mesoscale discussion at Aug 19, 2003, 6:37 PM CDT for Decatur County, Norton County, Phillips County, Kansas; 24 counties in Nebraska; Charles Mix County, Gregory County, Tripp County, South Dakota. It was in force for 113 min.

The area

The outline as issued.

The facts

Issued: Aug 19, 2003, 6:37 PM CDT (23:37 UTC)
Expired: Aug 19, 2003, 8:30 PM CDT
In force: 113 min
Issued by: the Storm Prediction Center

All 30 counties

Decatur County, KS, Norton County, KS, Phillips County, KS, Blaine County, NE, Boyd County, NE, Brown County, NE, Buffalo County, NE, Custer County, NE, Dawson County, NE, Franklin County, NE, Frontier County, NE, Furnas County, NE, Garfield County, NE, Gosper County, NE, Greeley County, NE, Harlan County, NE, Holt County, NE, Howard County, NE, Kearney County, NE, Keya Paha County, NE, Loup County, NE, Phelps County, NE, Red Willow County, NE, Rock County, NE, Sherman County, NE, Valley County, NE, Wheeler County, NE, Charles Mix County, SD, Gregory County, SD, Tripp County, SD

The radar

The North Platte radar (KLNX), 117 km from the middle of the area, began a volume at 23:39 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

Denver, CO (KDNR), launched 12:00Z, 11.6 hours before the alert went out and 306 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: 15 J/kg
Mixed-layer CIN: -380 J/kg
Mixed-layer LCL: 1842 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 17 m²/s²
0-3 km storm-relative helicity: 106 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
Aug 19, 2:05 PM CDT	Mesoscale Discussion	SPC	Barton, Clark, Cloud, Comanche, Dickinson, Edwards and 24 more	85 min
Aug 19, 2:40 PM CDT	Severe Thunderstorm Watch	SPC	Barber, Barton, Clark, Comanche, Edwards, Ellis and 26 more	5 hr
Aug 19, 2:51 PM CDT	Mesoscale Discussion	SPC	Atchison, Brown, Clay, Cloud, Dickinson, Doniphan and 12 more	84 min
Aug 19, 3:25 PM CDT	Severe Thunderstorm Watch	SPC	Atchison, Brown, Clay, Cloud, Dickinson, Doniphan and 16 more	6 hr
Aug 19, 6:10 PM CDT	Mesoscale Discussion	SPC	Atchison, Barber, Barton, Brown, Clark, Clay and 50 more	95 min
Aug 19, 3:29 PM CDT	Mesoscale Discussion	SPC	Dawes, Grant, Sheridan	91 min

Nearby

Mesoscale Discussions in Nebraska, 2003 Mesoscale Discussions in Kansas, 2003 Mesoscale Discussions in South Dakota, 2003 Every mesoscale discussion in 2003

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.