Alert archive / South Dakota / Wind Advisories in 2009
Wind Advisory 5, NWS Rapid City, SD
NWS Rapid City, SD issued this wind advisory at Jan 11, 2009, 2:23 PM MST for 6 counties in South Dakota. It took effect at Jan 12, 2009, 4:00 AM MST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Jan 11, 2009, 2:23 PM MST (21:23 UTC)
- In effect from
- Jan 12, 2009, 4:00 AM MST
- Expired
- Jan 12, 2009, 2:47 AM MST
- In force
- Issued by
- NWS Rapid City, SD
Counties Bennett County, SD, Jackson County, SD, Mellette County, SD, Oglala Lakota County, SD, Todd County, SD, Tripp County, SD
The radar
The Rapid City radar (KUDX), 154 km from the middle of the area, began a volume at 21:21 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 nearest sounding before it
Rapid City, SD (KUNR), launched 12:00Z, 9.4 hours before the alert went out and 155 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
- 1825 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- 206 m²/s²
- 0-3 km storm-relative helicity
- 259 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this wind advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Rapid City, SD wrote its last area forecast discussion before this wind advisory went out at Jan 11, 2:10 PM MST, 13 minutes earlier.
Area forecast discussion, Jan 11, 2:10 PM MST, 13 minutes before
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</html>The office that day
Everything else NWS Rapid City, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 11, 4:23 AM MST | High Wind Warning | UNR | Bennett, Butte, Custer, Haakon, Harding, Jackson and 9 more | 32 hr |
Nearby
Wind Advisories in South Dakota, 2009Every wind advisory in 2009
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.