Alert archive / Nebraska / Mesoscale Discussions in 2010

Mesoscale Discussion 1018

June 19, 20105 counties in Colorado; 10 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Jun 19, 2010, 12:23 AM MDT for 5 counties in Colorado; 10 counties in Nebraska. It was in force for 67 min.

The area

The outline as issued.

The facts

Issued: Jun 19, 2010, 12:23 AM MDT (06:23 UTC)
Expired: Jun 19, 2010, 1:30 AM MDT
In force: 67 min
Issued by: the Storm Prediction Center

Counties Logan County, CO, Morgan County, CO, Phillips County, CO, Sedgwick County, CO, Weld County, CO, Arthur County, NE, Chase County, NE, Cheyenne County, NE, Deuel County, NE, Dundy County, NE, Hayes County, NE, Keith County, NE, Kimball County, NE, Lincoln County, NE, Perkins County, NE

The radar

The Goodland radar (KGLD), 160 km from the middle of the area, began a volume at 06:23 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 348Jun 19, 12:55 AM MDT

The nearest sounding before it

Denver, CO (KDNR), launched 00:00Z, 6.4 hours before the alert went out and 119 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: 345 J/kg
Mixed-layer CIN: -102 J/kg
Mixed-layer LCL: 3615 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 53 m²/s²
0-3 km storm-relative helicity: 160 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.5

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
Jun 19, 12:58 AM MDT	Severe Thunderstorm Watch	SPC	Logan, Morgan, Phillips, Sedgwick, Washington, Weld and 1 more	5 hr
Jun 19, 4:12 PM MDT	Mesoscale Discussion	SPC	Adams, Arapahoe, Boulder, Broomfield, Denver, Larimer and 4 more	2 hr
Jun 19, 3:47 AM MDT	Mesoscale Discussion	SPC	Franklin, Furnas, Gosper, Harlan, Nuckolls, Phelps and 2 more	88 min
Jun 19, 4:30 AM MDT	Severe Thunderstorm Watch	SPC	Adams, Buffalo, Clay, Dawson, Fillmore, Franklin and 11 more	7 hr
Jun 19, 5:50 AM MDT	Mesoscale Discussion	SPC	Clay, Fillmore, Gage, Jefferson, Johnson, Nemaha and 6 more	55 min
Jun 19, 7:02 AM MDT	Severe Thunderstorm Watch	SPC	Gage, Jefferson, Johnson, Nemaha, Pawnee, Richardson and 1 more	7 hr
Jun 19, 2:45 PM MDT	Mesoscale Discussion	SPC	Adams, Clay, Fillmore, Franklin, Frontier, Furnas and 9 more	2 hr
Jun 19, 4:05 PM MDT	Tornado Watch	SPC	Adams, Clay, Fillmore, Franklin, Frontier, Furnas and 10 more	6 hr
Jun 19, 5:55 PM MDT	Mesoscale Discussion	SPC	Adams, Cass, Clay, Fillmore, Franklin, Gage and 17 more	95 min

Nearby

Mesoscale Discussions in Nebraska, 2010 Mesoscale Discussions in Colorado, 2010 Every mesoscale discussion in 2010

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.