Alert archive / South Dakota / Blizzard Warnings in 2014

Blizzard Warning 1, NWS Rapid City, SD

March 30, 201410 counties in South Dakota

NWS Rapid City, SD issued this blizzard warning at Mar 30, 2014, 12:32 PM MDT for 10 counties in South Dakota. It took effect at Mar 30, 2014, 9:00 PM MDT. It was in force for 21 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Mar 30, 2014, 12:32 PM MDT (18:32 UTC)
In effect from
Mar 30, 2014, 9:00 PM MDT
Expired
Mar 31, 2014, 6:00 PM MDT
In force
21 hr
Issued by
NWS Rapid City, SD

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

The radar

The Rapid City radar (KUDX), 49 km from the middle of the area, began a volume at 18:35 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 (KRAP), launched 12:00Z, 6.5 hours before the alert went out and 56 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 2014-03-30Temperature 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 km15 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 2014-03-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -47 square meters per square second.1939587897Sfc1 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
1798 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
-47 m²/s²
0-3 km storm-relative helicity
180 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 blizzard warning 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 blizzard warning went out at Mar 30, 11:54 AM MDT, 38 minutes earlier.

Area forecast discussion, Mar 30, 11:54 AM MDT, 38 minutes before
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Hazardous weather outlook, Mar 30, 5:28 AM MDT, 7 hours 4 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RAPID CITY SD
528 AM MDT SUN MAR 30 2014

SDZ001-002-012>014-024>032-041>044-046-047-049-072>074-WYZ054>058-
071-311400-
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-
528 AM MDT (628 AM CDT) SUN MAR 30 2014

...SIGNIFICANT SPRING SNOW STORM EXPECTED TONIGHT INTO MONDAY...

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

.DAY ONE...TODAY AND TONIGHT

A STRONG LOW PRESSURE SYSTEM WILL CROSS THE NORTHERN PLAINS LATE
TODAY INTO MONDAY. RAIN SHOWERS AND POSSIBLY A FEW THUNDERSTORMS
WILL DEVELOP ACROSS THE REGION THIS AFTERNOON. SEVERE
THUNDERSTORMS ARE NOT EXPECTED. AS COLDER AIR IS PULLED INTO THE
SYSTEM TONIGHT...RAIN WILL CHANGE TO SNOW. THE SNOW MAY BE HEAVY AT
TIMES WITH INCREASING NORTHERLY WINDS CREATING AREAS OF BLOWING AND
DRIFTING SNOW. THE HEAVIEST SNOW IS EXPECTED TO FALL GENERALLY NORTH
OF INTERSTATE 90 ACROSS NORTHEAST WYOMING AND WESTERN SOUTH DAKOTA...
AS WELL AS THE NORTHERN BLACK HILLS.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

SNOW...HEAVY AT TIMES...ALONG WITH BLOWING AND DRIFTING SNOW DUE TO
STRONG NORTHERLY WINDS WILL CONTINUE MONDAY. CONDITIONS WILL
GRADUALLY IMPROVE FROM WEST TO EAST MONDAY AFTERNOON.

.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

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 30, 5:06 AM MDTWinter Storm WarningUNRBennett, Butte, Custer, Haakon, Harding, Jackson and 9 more37 hr
Mar 30, 5:06 AM MDTWinter Weather AdvisoryUNRCuster, Fall River34 hr

Nearby

Blizzard Warnings in South Dakota, 2014Blizzard Warnings in Wyoming, 2014Every blizzard warning in 2014

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.