Alert archive / South Dakota / Mesoscale Discussions in 2008

Mesoscale Discussion 1165

June 2, 2008Boyd County, Nebraska; 27 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 2, 2008, 10:02 PM CDT for Boyd County, Nebraska; 27 counties in South Dakota. It was in force for 118 min.

The area

The outline as issued.

The facts

Issued
Jun 2, 2008, 10:02 PM CDT (03:02 UTC)
Expired
Jun 3, 2008, 12:00 AM CDT
In force
118 min
Issued by
the Storm Prediction Center
All 28 counties

Boyd County, NE, Aurora County, SD, Bon Homme County, SD, Brule County, SD, Buffalo County, SD, Charles Mix County, SD, Davison County, SD, Douglas County, SD, Gregory County, SD, Hanson County, SD, Hughes County, SD, Hutchinson County, SD, Hyde County, SD, Jerauld County, SD, Jones County, SD, Lake County, SD, Lyman County, SD, McCook County, SD, Mellette County, SD, Miner County, SD, Minnehaha County, SD, Sanborn County, SD, Stanley County, SD, Sully County, SD, Todd County, SD, Tripp County, SD, Turner County, SD, Yankton County, SD

The radar

The Sioux Falls radar (KFSD), 189 km from the middle of the area, began a volume at 03:01 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

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 3.0 hours before the alert went out and 301 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, N. Platte/Lee Bi, NE at 00:00Z on 2008-06-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1717 joules per kilogram.LCLLFCEL10008507005003002001001 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, N. Platte/Lee Bi, NE at 00:00Z on 2008-06-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -24 square meters per square second.19395878Sfc1 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
1717 J/kg
Mixed-layer CIN
-148 J/kg
Mixed-layer LCL
731 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
-24 m²/s²
0-3 km storm-relative helicity
103 m²/s²
Significant tornado parameter
0.2
Supercell composite
0.9

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 3, 1:57 AM CDTSevere Thunderstorm WatchSPCAntelope, Boone, Burt, Cedar, Colfax, Cuming and 11 more3 hr
Jun 3, 4:12 AM CDTMesoscale DiscussionSPCBurt, Butler, Cass, Colfax, Cuming, Dakota and 16 more2 hr
Jun 3, 4:33 AM CDTSevere Thunderstorm WatchSPCButler, Cass, Douglas, Gage, Jefferson, Johnson and 9 more7 hr
Jun 3, 6:49 AM CDTMesoscale DiscussionSPCNemaha86 min
Jun 3, 1:53 PM CDTMesoscale DiscussionSPCCheyenne, Kimball97 min
Jun 3, 6:15 PM CDTMesoscale DiscussionSPCDundy60 min
Jun 2, 7:11 PM CDTMesoscale DiscussionSPCAurora, Beadle, Brule, Buffalo, Charles Mix, Davison and 20 more34 min
Jun 2, 7:33 PM CDTSevere Thunderstorm WatchSPCBennett, Buffalo, Haakon, Hand, Hughes, Hyde and 7 more5 hr
Jun 3, 2:38 AM CDTMesoscale DiscussionSPCBennett, Custer, Haakon, Jackson, Jones, Mellette and 3 more67 min
Jun 3, 2:53 AM CDTSevere Thunderstorm WatchSPCBennett, Butte, Custer, Fall River, Haakon, Hughes and 12 more4 hr
Jun 3, 6:24 AM CDTMesoscale DiscussionSPCHughes, Jones, Lyman, Mellette, Stanley, Todd and 1 more36 min

Nearby

Mesoscale Discussions in South Dakota, 2008Mesoscale Discussions in Nebraska, 2008Every mesoscale discussion in 2008

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.