Alert archive / South Dakota / Severe Thunderstorm Watches in 2003
Severe Thunderstorm Watch 853
The Storm Prediction Center issued this severe thunderstorm watch at Aug 9, 2003, 1:55 PM CDT for 35 counties in South Dakota. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 9, 2003, 1:55 PM CDT (18:55 UTC)
- Expired
- Aug 9, 2003, 7:00 PM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 35 counties
Aurora County, SD, Beadle County, SD, Bennett County, SD, Brookings County, SD, Brown County, SD, Brule County, SD, Buffalo County, SD, Clark County, SD, Codington County, SD, Day County, SD, Deuel County, SD, Edmunds County, SD, Faulk County, SD, Grant County, SD, Haakon County, SD, Hamlin County, SD, Hand County, SD, Hughes County, SD, Hyde County, SD, Jackson County, SD, Jerauld County, SD, Jones County, SD, Kingsbury County, SD, Lyman County, SD, Marshall County, SD, Mellette County, SD, Miner County, SD, Potter County, SD, Roberts County, SD, Sanborn County, SD, Spink County, SD, Stanley County, SD, Sully County, SD, Todd County, SD, Tripp County, SD
The radar
The Aberdeen radar (KABR), 153 km from the middle of the area, began a volume at 18:54 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
15 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 3:13 PM CDT | Severe Thunderstorm Warning | ABR | Edmunds | 47 min |
| Aug 9, 3:29 PM CDT | Severe Thunderstorm Warning | UNR | Tripp | 61 min |
| Aug 9, 3:59 PM CDT | Severe Thunderstorm Warning | ABR | Edmunds | 31 min |
| Aug 9, 4:14 PM CDT | Severe Thunderstorm Warning | ABR | Faulk, Spink | 31 min |
| Aug 9, 4:24 PM CDT | Severe Thunderstorm Warning | UNR | Todd | 51 min |
| Aug 9, 4:30 PM CDT | Severe Thunderstorm Warning | UNR | Tripp | 60 min |
| Aug 9, 4:43 PM CDT | Severe Thunderstorm Warning | ABR | Faulk | 32 min |
| Aug 9, 4:48 PM CDT | Severe Thunderstorm Warning | ABR | Clark | 42 min |
| Aug 9, 4:54 PM CDT | Severe Thunderstorm Warning | ABR | Spink | 66 min |
| Aug 9, 4:57 PM CDT | Severe Thunderstorm Warning | ABR | Hand | 48 min |
| Aug 9, 5:15 PM CDT | Severe Thunderstorm Warning | UNR | Todd | 60 min |
| Aug 9, 5:19 PM CDT | Severe Thunderstorm Warning | FSD | Beadle | 41 min |
| Aug 9, 5:31 PM CDT | Severe Thunderstorm Warning | ABR | Clark | 44 min |
| Aug 9, 5:59 PM CDT | Severe Thunderstorm Warning | FSD | Beadle | 31 min |
| Aug 9, 6:44 PM CDT | Severe Thunderstorm Warning | UNR | Todd | 61 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, 6.9 hours before the alert went out and 124 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
- 144 J/kg
- Mixed-layer CIN
- -488 J/kg
- Mixed-layer LCL
- 1174 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 122 m²/s²
- 0-3 km storm-relative helicity
- 187 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.2
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 11:02 AM CDT | Mesoscale Discussion | SPC | Brown, Campbell, Dewey, Edmunds, Faulk, McPherson and 4 more | 118 min |
| Aug 9, 3:35 PM CDT | Severe Thunderstorm Watch | SPC | Tripp | 5 hr |
| Aug 9, 3:38 PM CDT | Mesoscale Discussion | SPC | Aurora, Beadle, Bennett, Brookings, Brown, Brule and 28 more | 2 hr |
| Aug 9, 5:15 PM CDT | Severe Thunderstorm Watch | SPC | Aurora, Beadle, Bon Homme, Brule, Buffalo, Charles Mix and 15 more | 6 hr |
Nearby
Severe Thunderstorm Watches in South Dakota, 2003Every severe thunderstorm 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.