Alert archive / South Dakota / Special Weather Statements in 2021
Special Weather Statement, NWS Rapid City, SD
NWS Rapid City, SD issued this special weather statement at May 23, 2021, 2:02 PM MDT for Meade County, South Dakota. It was in force for 28 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- May 23, 2021, 2:02 PM MDT (20:02 UTC)
- Expired
- May 23, 2021, 2:30 PM MDT
- In force
- 28 min
- Issued by
- NWS Rapid City, SD
County Meade County, SD
The radar
The Rapid City radar (KUDX), 61 km from the middle of the area, began a volume at 20:02 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, 8.0 hours before the alert went out and 68 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
- 549 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 271 m²/s²
- 0-3 km storm-relative helicity
- 339 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement 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 special weather statement went out at May 23, 11:17 AM MDT, 2 hours 45 minutes earlier.
Area forecast discussion, May 23, 11:17 AM MDT, 2 hours 45 minutes before
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</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
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Please try again in a few minutes.
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</html>Hazardous weather outlook, May 23, 9:26 AM MDT, 4 hours 36 minutes before
Hazardous Weather Outlook National Weather Service Rapid City SD 926 AM MDT Sun May 23 2021 SDZ001-002-012>014-024>032-041>044-046-047-049-072>074-WYZ054>058- 071-241300- 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- Oglala Lakota-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- 926 AM MDT Sun May 23 2021 /1026 AM CDT Sun May 23 2021/ This Hazardous Weather Outlook is for portions of western South Dakota and northeastern Wyoming. .DAY ONE...Today and Tonight Numerous to widespread strong to severe thunderstorms are expected this afternoon and evening. Storms will develop over northeastern WY and western SD in the early afternoon, then shift northward and eastward through the afternoon and evening. Damaging straight-line winds, large hail, and tornadoes will all be possible, especially over western SD. Storms will move into central SD late this evening. .DAYS TWO THROUGH SEVEN...Monday through Saturday Chances for thunderstorms return on Wednesday, but widespread severe weather is not expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed today. && Monitor NOAA Weather Radio for the latest information, forecasts, and warnings.
In the hours before
Special weather statement, May 23, 1:40 PM MDT, 22 minutes before
Special Weather Statement National Weather Service Rapid City SD 140 PM MDT Sun May 23 2021 SDZ027-029-041-074-232015- Fall River SD-Hermosa Foot Hills SD-Southern Foot Hills SD- Southern Black Hills SD- 140 PM MDT Sun May 23 2021 ...STRONG THUNDERSTORM OVER SOUTH CENTRAL CUSTER AND NORTH CENTRAL FALL RIVER COUNTIES... At 140 PM MDT, Doppler radar was tracking a strong thunderstorm 3 miles southeast of Cascade Falls, or 9 miles south of Hot Springs, moving north at 40 mph. Half inch hail and winds in excess of 40 mph will be possible with this storm. Locations impacted include... Hot Springs, southern Wind Cave National Park, Cottonwood Springs Dam, Cascade Falls, Maverick Junction, Cold Brook Reservoir and Angostura Reservoir. PRECAUTIONARY/PREPAREDNESS ACTIONS... This storm may intensify, so be certain to monitor local radio stations and available television stations for additional information and possible warnings from the National Weather Service. && LAT...LON 4321 10343 4321 10362 4359 10364 4360 10329 TIME...MOT...LOC 1940Z 181DEG 36KT 4330 10350 Eagan
Special weather statement, May 23, 2:00 PM MDT, 2 minutes before
Special Weather Statement
National Weather Service Rapid City SD
200 PM MDT Sun May 23 2021
SDZ026-028-029-074-232030-
Hermosa Foot Hills SD-Central Black Hills SD-Southern Black Hills SD-
Rapid City SD-
200 PM MDT Sun May 23 2021
...STRONG THUNDERSTORM OVER NORTH CENTRAL CUSTER AND SOUTH CENTRAL
PENNINGTON COUNTIES...
At 159 PM MDT, Doppler radar was tracking a strong thunderstorm over
eastern Custer State Park, or 11 miles east of Custer, moving north
at 40 mph.
Half inch hail and winds in excess of 40 mph will be possible with
this storm.
Locations impacted include...
Southwestern Rapid City, Keystone, Hisega, Hayward, Rockerville,
Mount Rushmore National Memorial, Keystone Wye, Bear Country, Hart
Ranch, Legion Lake, State Game Lodge, Center Lake, Custer State Park,
Black Gap, Reptile Gardens, Black Hills Playhouse and Sheridan Lake.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
&&
A Tornado Watch remains in effect until 900 PM MDT for southwestern
and west central South Dakota.
LAT...LON 4371 10348 4407 10346 4401 10311 4400 10310
4368 10333
TIME...MOT...LOC 1959Z 190DEG 37KT 4376 10337
EaganSpecial weather statement, May 23, 2:02 PM MDT, 0 minutes before
Special Weather Statement National Weather Service Rapid City SD 202 PM MDT Sun May 23 2021 SDZ013-031-073-232030- Pennington Co Plains SD-Southern Meade Co Plains SD- Northern Meade Co Plains SD- 202 PM MDT Sun May 23 2021 ...STRONG THUNDERSTORM OVER SOUTHEASTERN MEADE AND NORTHEASTERN PENNINGTON COUNTIES... At 201 PM MDT, Doppler radar was tracking a strong thunderstorm 9 miles north of Creighton, or 37 miles northwest of Philip, moving north at 45 mph. Nickel size hail and winds in excess of 40 mph will be possible with this storm. Locations impacted include... Plainview and Marcus. PRECAUTIONARY/PREPAREDNESS ACTIONS... This storm may intensify, so be certain to monitor local radio stations and available television stations for additional information and possible warnings from the National Weather Service. && A Tornado Watch remains in effect until 900 PM MDT for west central South Dakota. LAT...LON 4430 10218 4431 10236 4471 10241 4470 10204 TIME...MOT...LOC 2001Z 179DEG 41KT 4438 10226 Eagan
The office that day
Everything else NWS Rapid City, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 23, 3:20 AM MDT | Special Weather Statement | UNR | Oglala Lakota | 40 min |
| May 23, 4:57 AM MDT | Special Weather Statement | UNR | Meade | 33 min |
| May 23, 5:23 AM MDT | Special Weather Statement | UNR | Jackson | 37 min |
| May 23, 1:40 PM MDT | Special Weather Statement | UNR | Fall River | 35 min |
| May 23, 2:00 PM MDT | Special Weather Statement | UNR | Custer | 30 min |
| May 23, 2:16 PM MDT | Special Weather Statement | UNR | Pennington | 29 min |
| May 23, 2:45 PM MDT | Tornado Warning | UNR | Meade | 30 min |
| May 23, 3:13 PM MDT | Tornado Warning | UNR | Meade, Perkins | 47 min |
| May 23, 3:34 PM MDT | Special Weather Statement | UNR | Fall River | 26 min |
| May 23, 3:53 PM MDT | Severe Thunderstorm Warning | UNR | Custer | 37 min |
| May 23, 3:58 PM MDT | Tornado Warning | UNR | Perkins | 47 min |
| May 23, 3:59 PM MDT | Tornado Warning | UNR | Custer | 31 min |
| May 23, 4:14 PM MDT | Tornado Warning | UNR | Custer, Pennington | 13 min |
| May 23, 4:26 PM MDT | Severe Thunderstorm Warning | UNR | Custer, Lawrence, Meade, Pennington | 49 min |
| May 23, 4:26 PM MDT | Severe Thunderstorm Warning | UNR | Butte, Meade, Pennington | 33 min |
| May 23, 5:04 PM MDT | Severe Thunderstorm Warning | UNR | Butte, Meade, Pennington | 30 min |
| May 23, 5:35 PM MDT | Special Weather Statement | UNR | Perkins | 40 min |
| May 23, 5:53 PM MDT | Severe Thunderstorm Warning | UNR | Haakon, Meade, Pennington, Ziebach | 67 min |
Nearby
Special Weather Statements in South Dakota, 2021Every special weather statement in 2021
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.