Alert archive / Nebraska / Mesoscale Discussions in 2003

Mesoscale Discussion 1594

July 3, 20035 counties in Kansas; 21 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Jul 3, 2003, 5:35 PM CDT for 5 counties in Kansas; 21 counties in Nebraska. It was in force for 55 min.

The area

The outline as issued.

The facts

Issued: Jul 3, 2003, 5:35 PM CDT (22:35 UTC)
Expired: Jul 3, 2003, 6:30 PM CDT
In force: 55 min
Issued by: the Storm Prediction Center

All 26 counties

Jewell County, KS, Norton County, KS, Phillips County, KS, Republic County, KS, Smith County, KS, Adams County, NE, Blaine County, NE, Brown County, NE, Buffalo County, NE, Clay County, NE, Custer County, NE, Dawson County, NE, Franklin County, NE, Furnas County, NE, Garfield County, NE, Gosper County, NE, Hall County, NE, Harlan County, NE, Howard County, NE, Kearney County, NE, Loup County, NE, Nuckolls County, NE, Phelps County, NE, Sherman County, NE, Valley County, NE, Webster County, NE

The radar

The Grand Island radar (KUEX), 91 km from the middle of the area, began a volume at 22:37 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 626Jul 3, 6:15 PM CDT

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 10.6 hours before the alert went out and 113 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: 953 J/kg
Mixed-layer CIN: -365 J/kg
Mixed-layer LCL: 2329 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 45 m²/s²
0-3 km storm-relative helicity: 61 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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 3, 3:37 PM CDT	Mesoscale Discussion	SPC	Cheyenne, Rawlins, Sherman	53 min
Jul 3, 3:50 PM CDT	Severe Thunderstorm Watch	SPC	Cheyenne, Rawlins, Sherman, Thomas	5 hr
Jul 3, 6:15 PM CDT	Severe Thunderstorm Watch	SPC	Decatur, Graham, Norton, Osborne, Phillips, Rooks and 2 more	6 hr

Nearby

Mesoscale Discussions in Nebraska, 2003 Mesoscale Discussions in Kansas, 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.