Alert archive / South Dakota / Severe Thunderstorm Watches in 2003
Severe Thunderstorm Watch 627
The Storm Prediction Center issued this severe thunderstorm watch at Jul 3, 2003, 6:45 PM CDT for 31 counties in South Dakota. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 3, 2003, 6:45 PM CDT (23:45 UTC)
- Expired
- Jul 4, 2003, 1:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 31 counties
Aurora County, SD, Beadle County, SD, Bennett County, SD, Brule County, SD, Buffalo County, SD, Charles Mix County, SD, Dewey County, SD, Douglas County, SD, Fall River County, SD, Faulk County, SD, Gregory County, SD, Haakon County, SD, Hand County, SD, Hughes County, SD, Hyde County, SD, Jackson County, SD, Jerauld County, SD, Jones County, SD, Lyman County, SD, Meade County, SD, Mellette County, SD, Oglala Lakota County, SD, Pennington County, SD, Potter County, SD, Sanborn County, SD, Spink County, SD, Stanley County, SD, Sully County, SD, Todd County, SD, Tripp County, SD, Ziebach County, SD
Warnings issued inside it
16 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 3, 7:04 PM CDT | Severe Thunderstorm Warning | UNR | Bennett | 56 min |
| Jul 3, 7:09 PM CDT | Severe Thunderstorm Warning | UNR | Ziebach | 36 min |
| Jul 3, 7:17 PM CDT | Severe Thunderstorm Warning | UNR | Pennington | 43 min |
| Jul 3, 7:29 PM CDT | Severe Thunderstorm Warning | ABR | Dewey | 61 min |
| Jul 3, 7:33 PM CDT | Severe Thunderstorm Warning | UNR | Jackson | 57 min |
| Jul 3, 8:16 PM CDT | Severe Thunderstorm Warning | ABR | Dewey | 29 min |
| Jul 3, 8:19 PM CDT | Severe Thunderstorm Warning | UNR | Jackson | 56 min |
| Jul 3, 8:23 PM CDT | Severe Thunderstorm Warning | UNR | Bennett | 67 min |
| Jul 3, 8:38 PM CDT | Tornado Warning | UNR | Bennett | 67 min |
| Jul 3, 9:43 PM CDT | Tornado Warning | UNR | Todd | 32 min |
| Jul 3, 9:54 PM CDT | Severe Thunderstorm Warning | FSD | Douglas | 36 min |
| Jul 3, 10:38 PM CDT | Severe Thunderstorm Warning | UNR | Jackson | 67 min |
| Jul 3, 11:14 PM CDT | Severe Thunderstorm Warning | ABR | Spink | 61 min |
| Jul 4, 12:19 AM CDT | Severe Thunderstorm Warning | UNR | Ziebach | 56 min |
| Jul 4, 12:46 AM CDT | Severe Thunderstorm Warning | UNR | Meade | 59 min |
| Jul 4, 12:56 AM CDT | Severe Thunderstorm Warning | ABR | Dewey | 49 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
N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 11.8 hours before the alert went out and 312 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
- 953 J/kg
- Mixed-layer CIN
- -365 J/kg
- Mixed-layer LCL
- 2329 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 45 m²/s²
- 0-3 km storm-relative helicity
- 61 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 2, 7:25 PM CDT | Tornado Watch | SPC | Deuel, Grant, Roberts | 6 hr |
| Jul 2, 9:06 PM CDT | Mesoscale Discussion | SPC | Deuel, Grant, Roberts | 84 min |
| Jul 2, 11:14 PM CDT | Mesoscale Discussion | SPC | Deuel, Grant, Roberts | 61 min |
| Jul 3, 3:28 PM CDT | Mesoscale Discussion | SPC | Butte, Corson, Harding, Lawrence, Meade, Pennington and 2 more | 3 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.