Alert archive / South Dakota / Mesoscale Discussions in 2003

Mesoscale Discussion 1495

June 24, 20037 counties in North Dakota; 24 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 24, 2003, 6:28 PM CDT for 7 counties in North Dakota; 24 counties in South Dakota. It was in force for 92 min.

The area

The outline as issued.

The facts

Issued
Jun 24, 2003, 6:28 PM CDT (23:28 UTC)
Expired
Jun 24, 2003, 8:00 PM CDT
In force
92 min
Issued by
the Storm Prediction Center
All 31 counties

Dickey County, ND, LaMoure County, ND, Logan County, ND, McIntosh County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Beadle County, SD, Brown County, SD, Buffalo County, SD, Campbell County, SD, Clark County, SD, Day County, SD, Dewey County, SD, Edmunds County, SD, Faulk County, SD, Haakon County, SD, Hand County, SD, Hughes County, SD, Hyde County, SD, Jones County, SD, Lyman County, SD, Marshall County, SD, McPherson County, SD, Mellette County, SD, Potter County, SD, Spink County, SD, Stanley County, SD, Sully County, SD, Walworth County, SD, Ziebach County, SD

The radar

The Aberdeen radar (KABR), 106 km from the middle of the area, began a volume at 23:28 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

Bismarck Municip, ND (KBIS), launched 12:00Z, 11.5 hours before the alert went out and 196 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-pSkew-T log-p diagram, Bismarck Municip, ND at 12:00Z on 2003-06-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Bismarck Municip, ND at 12:00Z on 2003-06-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 17 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1678 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
17 m²/s²
0-3 km storm-relative helicity
178 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.

IssuedProductOfficeCountiesLasted
Jun 23, 9:10 PM CDTMesoscale DiscussionSPCAurora, Bon Homme, Brookings, Charles Mix, Clark, Clay and 19 more65 min
Jun 23, 10:38 PM CDTMesoscale DiscussionSPCUnion67 min
Jun 23, 10:50 PM CDTTornado WatchSPCUnion5 hr
Jun 23, 11:45 PM CDTSevere Thunderstorm WatchSPCAurora, Bon Homme, Brule, Charles Mix, Clay, Davison and 15 more6 hr
Jun 24, 1:21 AM CDTMesoscale DiscussionSPCBeadle, Brookings, Buffalo, Clark, Codington, Day and 11 more114 min
Jun 24, 2:44 AM CDTMesoscale DiscussionSPCAurora, Bon Homme, Charles Mix, Clay, Davison, Douglas and 12 more2 hr
Jun 24, 1:29 PM CDTMesoscale DiscussionSPCBon Homme, Charles Mix, Clay, Douglas, Gregory, Hutchinson and 2 more3 hr
Jun 24, 2:15 PM CDTTornado WatchSPCAurora, Bon Homme, Brookings, Brule, Charles Mix, Clay and 17 more8 hr
Jun 24, 4:20 PM CDTSevere Thunderstorm WatchSPCDeuel, Grant, Roberts6 hr
Jun 24, 5:59 PM CDTMesoscale DiscussionSPCAurora, Bon Homme, Brookings, Charles Mix, Clay, Davison and 14 more61 min

Nearby

Mesoscale Discussions in South Dakota, 2003Mesoscale Discussions in North Dakota, 2003Every 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.