Alert archive / South Dakota / High Wind Watches in 2012
High Wind Watch 2, NWS Rapid City, SD
NWS Rapid City, SD issued this high wind watch at Feb 21, 2012, 2:33 PM MST for 6 counties in South Dakota. It took effect at Feb 23, 2012, 8:00 AM MST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Feb 21, 2012, 2:33 PM MST (21:33 UTC)
- In effect from
- Feb 23, 2012, 8:00 AM MST
- Expired
- Feb 22, 2012, 1:44 PM MST
- In force
- Issued by
- NWS Rapid City, SD
Counties Butte County, SD, Harding County, SD, Lawrence County, SD, Meade County, SD, Pennington County, SD, Perkins County, SD
The radar
The Rapid City radar (KUDX), 81 km from the middle of the area, began a volume at 21:36 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, 9.6 hours before the alert went out and 86 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
- 1338 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 98 m²/s²
- 0-3 km storm-relative helicity
- 191 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this high wind watch 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 high wind watch went out at Feb 21, 2:11 PM MST, 22 minutes earlier.
Area forecast discussion, Feb 21, 2:11 PM MST, 22 minutes before
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</html>Hazardous weather outlook, Feb 21, 3:56 AM MST, 10 hours 37 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE RAPID CITY SD 356 AM MST TUE FEB 21 2012 SDZ001-002-012>014-024>032-041>044-046-047-049-072>074-WYZ054>058- 071-221400- BENNETT-BUTTE-CENTRAL BLACK HILLS-CUSTER CO PLAINS-FALL RIVER-HAAKON- HARDING-HERMOSA FOOT HILLS-JACKSON-MELLETTE-NORTHEASTERN CROOK- NORTHERN BLACK HILLS-NORTHERN CAMPBELL-NORTHERN FOOT HILLS- NORTHERN MEADE CO PLAINS-PENNINGTON CO PLAINS-PERKINS-RAPID CITY- SHANNON-SOUTHERN BLACK HILLS-SOUTHERN CAMPBELL-SOUTHERN FOOT HILLS- SOUTHERN MEADE CO PLAINS-STURGIS/PIEDMONT FOOT HILLS-TODD-TRIPP- WESTERN CROOK-WESTON-WYOMING BLACK HILLS-ZIEBACH- 356 AM MST (456 AM CST) TUE FEB 21 2012 ...HIGH WIND WATCH FOR WEDNESDAY ACROSS THE PLAINS OF NORTHWEST AND WEST CENTRAL SOUTH DAKOTA... THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN SOUTH DAKOTA AND NORTHEASTERN WYOMING. .DAY ONE...TODAY AND TONIGHT AN ACTIVE WEATHER PATTERN WILL BRING CHANCES FOR RAIN AND SNOW SHOWERS TODAY ACROSS THE NORTHERN BLACK HILLS...AND PARTS OF NORTHEAST WYOMING AND FAR NORTHWEST SOUTH DAKOTA. BETTER CHANCES OF PRECIPITATION ARE EXPECTED TONIGHT AS A STRONGER DISTURBANCE CROSSES THE AREA. SNOW ACCUMULATIONS ARE EXPECTED TO BE AN INCH OR LESS TODAY...AND ONE TO THREE INCHES POSSIBLE TONIGHT. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY A FAST MOVING SYSTEM WILL BRING RAIN AND SNOW TO THE AREA WEDNESDAY. THIS SYSTEM WILL ALSO BRING GUSTY WEST TO NORTHWEST WINDS TO THE AREA. WINDS COULD REACH 35 TO 55 MPH WITH GUSTS TO 60 MPH. WINDS ARE EXPECTED TO DECREASE BY WEDNESDAY EVENING...BUT WILL REMAIN GUSTY THROUGH WEDNESDAY NIGHT AND INTO THURSDAY. SNOW WILL CONTINUE TO FALL ACROSS THE NORTHERN BLACK HILLS WEDNESDAY THROUGH THURSDAY. AS A RESULT...LIGHT TO MODERATE SNOW ACCUMULATIONS ARE EXPECTED ALTHOUGH AMOUNTS ARE UNCERTAIN AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY.
The office that day
Everything else NWS Rapid City, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 21, 3:45 AM MST | High Wind Watch | UNR | Butte, Haakon, Harding, Lawrence, Meade, Pennington and 2 more | 11 hr |
| Feb 21, 2:33 PM MST | Wind Advisory | UNR | Bennett, Butte, Custer, Fall River, Haakon, Harding and 10 more | 51 hr |
Nearby
High Wind Watches in South Dakota, 2012Every high wind watch in 2012
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.