Alert archive / South Dakota / Wind Advisories in 2012

Wind Advisory 44, NWS Rapid City, SD

December 2, 20128 counties in South Dakota

NWS Rapid City, SD issued this wind advisory at Dec 2, 2012, 3:23 PM MST for 8 counties in South Dakota. It took effect at Dec 2, 2012, 5:00 PM MST. It was in force for 24 hr.

The area

The counties it named.

The facts

Issued
Dec 2, 2012, 3:23 PM MST (22:23 UTC)
In effect from
Dec 2, 2012, 5:00 PM MST
Expired
Dec 3, 2012, 5:00 PM MST
In force
24 hr
Issued by
NWS Rapid City, SD

Counties Butte County, SD, Haakon County, SD, Harding County, SD, Lawrence County, SD, Meade County, SD, Pennington County, SD, Perkins County, SD, Ziebach County, SD

The radar

The Rapid City radar (KUDX), 72 km from the middle of the area, began a volume at 22:29 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, 10.4 hours before the alert went out and 79 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.

Skew-T log-pSkew-T log-p diagram, Rapid City, SD at 12:00Z on 2012-12-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Rapid City, SD at 12:00Z on 2012-12-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 23 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2984 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
23 m²/s²
0-3 km storm-relative helicity
98 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

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 Dec 2, 2:56 PM MST, 27 minutes earlier.

Area forecast discussion, Dec 2, 2:56 PM MST, 27 minutes before
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Hazardous weather outlook, Dec 2, 9:50 AM MST, 5 hours 33 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RAPID CITY SD
950 AM MST SUN DEC 2 2012

SDZ001-002-012>014-024>032-041>044-046-047-049-072>074-WYZ054>058-
071-031400-
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-
950 AM MST (1050 AM CST) SUN DEC 2 2012

...HIGH WIND WARNING THROUGH THIS EVENING FOR NORTHEAST WYOMING...
   THE NORTHERN BLACK HILLS...AND NORTHERN FOOTHILLS...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN SOUTH DAKOTA AND
NORTHEASTERN WYOMING.

.DAY ONE...TODAY AND TONIGHT

VERY GUSTY SOUTHWESTERLY WINDS WILL DEVELOP ACROSS NORTHEASTERN
WYOMING AND PORTIONS OF THE BLACK HILLS LATE THIS MORNING AND PERSIST
INTO THIS EVENING. SOME GUSTS TO NEAR 60 MPH ARE LIKELY ACROSS
CAMPBELL COUNTY AND DOWNSLOPE FAVORED AREAS OF THE NORTHERN BLACK
HILLS.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

A COLD FRONT WILL CROSS THE AREA LATE TONIGHT...BRINGING GUSTY
NORTHWESTERLY WINDS BEHIND IT. THE STRONGEST WINDS ARE EXPECTED TO BE
ACROSS THE NORTHWESTERN SOUTH DAKOTA PLAINS ON MONDAY...WHERE GUSTS
TO AROUND 50 MPH ARE LIKELY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY.

&&

STAY TUNED TO NOAA WEATHER RADIO FOR FURTHER DETAILS OR UPDATES...
OR CHECK OUR WEB SITE AT WEATHER.GOV/RAPIDCITY

In the hours before

Local storm report, Dec 2, 12:03 PM MST, 3 hours 20 minutes before
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Local storm report, Dec 2, 12:14 PM MST, 3 hours 9 minutes before
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Local storm report, Dec 2, 12:16 PM MST, 3 hours 7 minutes before
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Local storm report, Dec 2, 1:06 PM MST, 2 hours 17 minutes before
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Local storm report, Dec 2, 2:30 PM MST, 53 minutes before
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Local storm report, Dec 2, 2:35 PM MST, 48 minutes before
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The office that day

Everything else NWS Rapid City, SD issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 2, 9:24 AM MSTHigh Wind WarningUNRLawrence, Meade, Pennington14 hr

Nearby

Wind Advisories in South Dakota, 2012Every wind advisory 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.