Alert archive / South Dakota / Blizzard Warnings in 2015
Blizzard Warning 1, NWS Rapid City, SD
NWS Rapid City, SD issued this blizzard warning at May 9, 2015, 2:41 PM MDT for Butte County, Meade County, Pennington County, South Dakota. It took effect at May 9, 2015, 6:00 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
- May 9, 2015, 2:41 PM MDT (20:41 UTC)
- In effect from
- May 9, 2015, 6:00 PM MDT
- Expired
- May 10, 2015, 2:40 PM MDT
- In force
- 21 hr
- Issued by
- NWS Rapid City, SD
Counties Butte County, SD, Meade County, SD, Pennington County, SD
The radar
The Rapid City radar (KUDX), 43 km from the middle of the area, began a volume at 20:42 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, 8.7 hours before the alert went out and 48 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
- 534 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 64 m²/s²
- 0-3 km storm-relative helicity
- 140 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 May 9, 11:38 AM MDT, 3 hours 3 minutes earlier.
Area forecast discussion, May 9, 11:38 AM MDT, 3 hours 3 minutes before
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</html>Hazardous weather outlook, May 9, 4:13 AM MDT, 10 hours 28 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE RAPID CITY SD 413 AM MDT SAT MAY 9 2015 SDZ001-002-012>014-024>032-041>044-046-047-049-072>074-WYZ054>058- 071-101300- HARDING-PERKINS-BUTTE-NORTHERN MEADE CO PLAINS-ZIEBACH- NORTHERN BLACK HILLS-NORTHERN FOOT HILLS-RAPID CITY- SOUTHERN FOOT HILLS-CENTRAL BLACK HILLS-SOUTHERN BLACK HILLS- CUSTER CO PLAINS-PENNINGTON CO PLAINS-HAAKON-FALL RIVER-SHANNON- JACKSON-BENNETT-MELLETTE-TODD-TRIPP-STURGIS/PIEDMONT FOOT HILLS- SOUTHERN MEADE CO PLAINS-HERMOSA FOOT HILLS-NORTHERN CAMPBELL- SOUTHERN CAMPBELL-WESTERN CROOK-WYOMING BLACK HILLS-WESTON- NORTHEASTERN CROOK- 413 AM MDT SAT MAY 9 2015 ...LARGE SPRING STORM TO BRING WINTRY WEATHER TO THE AREA... THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN SOUTH DAKOTA AND NORTHEASTERN WYOMING. .DAY ONE...TODAY AND TONIGHT A STRONG LOW PRESSURE SYSTEM WILL AFFECT THE NORTHERN PLAINS THIS WEEKEND. RAIN WILL CHANGE WILL CHANGE SNOW OVER MOST OF THE AREA TODAY...WITH HEAVY SNOW EXPECTED TONIGHT. TRAVEL WILL BECOME HAZARDOUS TONIGHT INTO SUNDAY MORNING DUE TO HEAVY SNOW. WINTER STORM WATCHES AND WARNINGS ARE IN EFFECT. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY SNOW WILL CONTINUE INTO SUNDAY...WITH STRONG NORTHWEST WINDS DEVELOPING ON MUCH OF THE SOUTH DAKOTA PLAINS. SNOW WILL TAPPER OFF SUNDAY NIGHT. WINTER STORM WARNINGS AND WATCHES ARE CURRENTLY IN EFFECT THROUGH SUNDAY AFTERNOON. THERE ARE PERIODIC CHANCES FOR THUNDERSTORMS NEXT WEEK. SEVERE WEATHER IS NOT EXPECTED. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .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, May 9, 11:34 AM MDT, 3 hours 7 minutes before
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</html>Local storm report, May 9, 12:21 PM MDT, 2 hours 20 minutes before
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</html>Local storm report, May 9, 12:40 PM MDT, 2 hours 1 minute before
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</html>Local storm report, May 9, 1:41 PM MDT, 1 hour 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 |
|---|---|---|---|---|
| May 9, 3:39 AM MDT | Winter Storm Watch | UNR | Bennett, Haakon, Jackson | 11 hr |
Nearby
Blizzard Warnings in South Dakota, 2015Every blizzard warning in 2015
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.