Alert archive / North Dakota / Mesoscale Discussions in 2003

Mesoscale Discussion 1396

June 15, 20034 states

The Storm Prediction Center issued this mesoscale discussion at Jun 15, 2003, 2:05 PM MDT for 4 states. It was in force for 85 min.

The area

The outline as issued.

The facts

Issued: Jun 15, 2003, 2:05 PM MDT (20:05 UTC)
Expired: Jun 15, 2003, 3:30 PM MDT
In force: 85 min
Issued by: the Storm Prediction Center

All 25 counties

Big Horn County, MT, Carter County, MT, Custer County, MT, Dawson County, MT, Fallon County, MT, Powder River County, MT, Prairie County, MT, Rosebud County, MT, Wibaux County, MT, Adams County, ND, Billings County, ND, Bowman County, ND, Dunn County, ND, Golden Valley County, ND, Grant County, ND, Hettinger County, ND, Mercer County, ND, Morton County, ND, Slope County, ND, Stark County, ND, Butte County, SD, Harding County, SD, Perkins County, SD, Crook County, WY, Sheridan County, WY

The watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Severe Thunderstorm Watch 544Jun 15, 2:40 PM MDT

The nearest sounding before it

Glasgow Intl Airport, MT (KGGW), launched 12:00Z, 8.1 hours before the alert went out and 292 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: 64 J/kg
Mixed-layer CIN: -135 J/kg
Mixed-layer LCL: 1294 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 104 m²/s²
0-3 km storm-relative helicity: 157 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
Jun 15, 2:40 PM MDT	Severe Thunderstorm Watch	SPC	Carter, Custer, Dawson, Fallon, Powder River, Prairie and 1 more	5 hr
Jun 15, 5:20 PM MDT	Mesoscale Discussion	SPC	Carter, Custer, Fallon, Powder River, Wibaux	115 min

Nearby

Mesoscale Discussions in North Dakota, 2003 Mesoscale Discussions in Montana, 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.