Alert archive / South Dakota / Severe Thunderstorm Watches in 2005

Severe Thunderstorm Watch 549

June 28, 200510 counties in Nebraska; 25 counties in South Dakota

The Storm Prediction Center issued this severe thunderstorm watch at Jun 28, 2005, 7:15 PM CDT for 10 counties in Nebraska; 25 counties in South Dakota. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jun 28, 2005, 7:15 PM CDT (00:15 UTC)
Expired
Jun 29, 2005, 12:00 AM CDT
In force
5 hr
Issued by
the Storm Prediction Center
All 35 counties

Blaine County, NE, Boyd County, NE, Brown County, NE, Garfield County, NE, Holt County, NE, Keya Paha County, NE, Loup County, NE, Rock County, NE, Thomas County, NE, Wheeler County, NE, Aurora County, SD, Brule County, SD, Buffalo County, SD, Campbell County, SD, Charles Mix County, SD, Corson County, SD, Dewey County, SD, Douglas County, SD, Edmunds County, SD, Faulk County, SD, Gregory County, SD, Hand County, SD, Hughes County, SD, Hyde County, SD, Jerauld County, SD, Jones County, SD, Lyman County, SD, McPherson County, SD, Mellette County, SD, Potter County, SD, Stanley County, SD, Sully County, SD, Todd County, SD, Tripp County, SD, Walworth County, SD

The radar

The Aberdeen radar (KABR), 159 km from the middle of the area, began a volume at 00:14 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.

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 0.3 hours before the alert went out and 112 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, Aberdeen, SD at 00:00Z on 2005-06-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1880 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, Aberdeen, SD at 00:00Z on 2005-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 129 square meters per square second.193958Sfc1 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
1880 J/kg
Mixed-layer CIN
-170 J/kg
Mixed-layer LCL
1183 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
129 m²/s²
0-3 km storm-relative helicity
265 m²/s²
Significant tornado parameter
0.2
Supercell composite
3.1

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 28, 7:10 PM CDTSevere Thunderstorm WatchSPCArthur, Chase, Cheyenne, Deuel, Dundy, Frontier and 13 more5 hr
Jun 28, 10:15 PM CDTMesoscale DiscussionSPCCherry, Keya Paha, Sheridan60 min
Jun 28, 10:34 PM CDTMesoscale DiscussionSPCArthur, Chase, Cheyenne, Deuel, Dundy, Frontier and 11 more86 min
Jun 29, 1:30 AM CDTMesoscale DiscussionSPCBrown, Cherry, Keya Paha, Rock90 min
Jun 29, 2:45 PM CDTMesoscale DiscussionSPCGage, Jefferson, Johnson, Lancaster, Nemaha, Otoe and 3 more2 hr
Jun 29, 4:50 PM CDTSevere Thunderstorm WatchSPCBurt, Cass, Dodge, Douglas, Gage, Jefferson and 10 more6 hr
Jun 29, 6:50 PM CDTMesoscale DiscussionSPCCass, Douglas, Gage, Jefferson, Johnson, Lancaster and 10 more85 min
Jun 28, 8:50 PM CDTSevere Thunderstorm WatchSPCHarding, Perkins7 hr
Jun 28, 10:45 PM CDTSevere Thunderstorm WatchSPCBrule, Buffalo, Butte, Campbell, Corson, Dewey and 15 more7 hr
Jun 28, 11:11 PM CDTMesoscale DiscussionSPCHarding94 min
Jun 29, 2:47 AM CDTMesoscale DiscussionSPCBrown, Edmunds, Faulk, McPherson, Potter, Spink and 1 more88 min
Jun 29, 11:01 AM CDTMesoscale DiscussionSPCBrookings, Brown, Clark, Codington, Day, Deuel and 7 more59 min
Jun 29, 11:30 AM CDTTornado WatchSPCAurora, Beadle, Bon Homme, Brookings, Brown, Charles Mix and 25 more7 hr
Jun 29, 1:52 PM CDTMesoscale DiscussionSPCBrookings, Brown, Clark, Codington, Day, Deuel and 8 more113 min
Jun 29, 3:37 PM CDTMesoscale DiscussionSPCBrookings, Deuel, Grant, Moody, Roberts53 min
Jun 29, 3:50 PM CDTTornado WatchSPCDeuel, Grant7 hr

Nearby

Severe Thunderstorm Watches in South Dakota, 2005Severe Thunderstorm Watches in Nebraska, 2005Every severe thunderstorm watch in 2005

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.