Alert archive / South Dakota / Tornado Watches in 2003
Tornado Watch 519
The Storm Prediction Center issued this tornado watch at Jun 11, 2003, 6:45 PM CDT for 11 counties in Nebraska; 28 counties in South Dakota. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 11, 2003, 6:45 PM CDT (23:45 UTC)
- Expired
- Jun 11, 2003, 11:00 PM CDT
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
All 39 counties
Antelope County, NE, Boyd County, NE, Cedar County, NE, Garfield County, NE, Holt County, NE, Knox County, NE, Madison County, NE, Pierce County, NE, Stanton County, NE, Wayne County, NE, Wheeler County, NE, Aurora County, SD, Beadle County, SD, Bon Homme County, SD, Brown County, SD, Brule County, SD, Buffalo County, SD, Charles Mix County, SD, Clark County, SD, Davison County, SD, Day County, SD, Douglas County, SD, Edmunds County, SD, Faulk County, SD, Gregory County, SD, Hand County, SD, Hanson County, SD, Hutchinson County, SD, Hyde County, SD, Jerauld County, SD, Kingsbury County, SD, Marshall County, SD, McCook County, SD, McPherson County, SD, Miner County, SD, Sanborn County, SD, Spink County, SD, Turner County, SD, Yankton County, SD
The radar
The Aberdeen radar (KABR), 133 km from the middle of the area, began a volume at 23:48 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.
Warnings issued inside it
8 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 11, 7:54 PM CDT | Severe Thunderstorm Warning | ABR | Edmunds, Faulk | 66 min |
| Jun 11, 8:06 PM CDT | Tornado Warning | ABR | Hyde | 39 min |
| Jun 11, 8:46 PM CDT | Severe Thunderstorm Warning | ABR | Hyde | 44 min |
| Jun 11, 9:00 PM CDT | Severe Thunderstorm Warning | FSD | Brule | 30 min |
| Jun 11, 9:10 PM CDT | Tornado Warning | FSD | Brule | 35 min |
| Jun 11, 9:40 PM CDT | Severe Thunderstorm Warning | FSD | Gregory | 50 min |
| Jun 11, 9:46 PM CDT | Severe Thunderstorm Warning | FSD | Brule | 44 min |
| Jun 11, 10:48 PM CDT | Severe Thunderstorm Warning | FSD | Brule | 27 min |
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 12:00Z, 11.8 hours before the alert went out and 72 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 767 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 67 m²/s²
- 0-3 km storm-relative helicity
- 144 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WWUS20 KWNS 112342
SEL9
SPC WW 112345
NEZ000-SDZ000-120400-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 519
NWS STORM PREDICTION CENTER NORMAN OK
645 PM CDT WED JUN 11 2003
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
NORTHEAST NEBRASKA
EASTERN SOUTH DAKOTA
EFFECTIVE THIS WEDNESDAY EVENING FROM 645 PM UNTIL 1100 PM CDT.
TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE TORNADO WATCH AREA IS ALONG AND 60 STATUTE MILES EAST AND WEST
OF A LINE FROM 35 MILES NORTH NORTHWEST OF ABERDEEN SOUTH DAKOTA
TO 35 MILES WEST SOUTHWEST OF NORFOLK NEBRASKA.
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.
OTHER WATCH INFORMATION...CONTINUE...WW 512...WW 513...WW 514...WW
515...WW 516...WW 517...WW 518...
DISCUSSION...STRONG TROUGH MOVING EWD ACROSS WRN DAKOTAS WITH AXIS
OF MOIST/MODERATELY UNSTABLE AIRMASS ERN NE/SD. SUPERCELLS HAVE
DEVELOPED NCENTRAL NE/CENTRAL SD AND WILL CONTINUE TO DEVELOP E/NE
AHEAD OF UPPER TROUGH. POTENTIAL WILL CONTINUE FOR ISOLATED
TORNADOES ALONG WITH LARGE HAIL/DAMAGING WINDS.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.
MEAN STORM MOTION VECTOR 25030.
...HALES
455,0972 414,0965 414,0991 455,0995SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 11, 2:06 PM CDT | Mesoscale Discussion | SPC | Arthur, Banner, Blaine, Box Butte, Chase, Cherry and 20 more | 114 min |
| Jun 11, 2:40 PM CDT | Tornado Watch | SPC | Arthur, Blaine, Brown, Cherry, Custer, Grant and 8 more | 6 hr |
| Jun 11, 4:58 PM CDT | Mesoscale Discussion | SPC | Arthur, Blaine, Brown, Cherry, Custer, Grant and 7 more | 92 min |
| Jun 11, 5:33 PM CDT | Mesoscale Discussion | SPC | Chase, Dundy, Frontier, Furnas, Gosper, Hayes and 3 more | 87 min |
| Jun 11, 5:50 PM CDT | Severe Thunderstorm Watch | SPC | Chase, Dundy, Frontier, Furnas, Hayes, Hitchcock and 3 more | 5 hr |
| Jun 11, 6:04 PM CDT | Mesoscale Discussion | SPC | Antelope, Boone, Boyd, Garfield, Greeley, Holt and 12 more | 86 min |
Nearby
Tornado Watches in South Dakota, 2003Tornado Watches in Nebraska, 2003Every tornado watch 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.