Alert archive / South Dakota / Special Weather Statements in 2018
Special Weather Statement, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this special weather statement at Jun 11, 2018, 8:22 PM CDT for Kingsbury County, South Dakota. It was in force for 23 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
- Jun 11, 2018, 8:22 PM CDT (01:22 UTC)
- Expired
- Jun 11, 2018, 8:45 PM CDT
- In force
- 23 min
- Issued by
- NWS Sioux Falls, SD
County Kingsbury County, SD
The radar
The Sioux Falls radar (KFSD), 112 km from the middle of the area, began a volume at 01:22 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
Omaha, NE (KOAX), launched 00:00Z, 1.4 hours before the alert went out and 351 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
- 562 J/kg
- Mixed-layer CIN
- -153 J/kg
- Mixed-layer LCL
- 1301 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 52 m²/s²
- 0-3 km storm-relative helicity
- 117 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.0
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 Sioux Falls, SD wrote its last area forecast discussion before this special weather statement went out at Jun 11, 6:16 PM CDT, 2 hours 6 minutes earlier.
Area forecast discussion, Jun 11, 6:16 PM CDT, 2 hours 6 minutes before
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</html>Hazardous weather outlook, Jun 11, 12:25 PM CDT, 7 hours 57 minutes before
Hazardous Weather Outlook National Weather Service Sioux Falls SD 1225 PM CDT Mon Jun 11 2018 IAZ002-003-012>014-020>022-031-032-MNZ090-121730- Osceola-Dickinson-Sioux-O'Brien-Clay IA-Plymouth-Cherokee- Buena Vista-Woodbury-Ida-Jackson- 1225 PM CDT Mon Jun 11 2018 This Hazardous Weather Outlook is for portions of northwest Iowa, west central Iowa, and southwest Minnesota. .DAY ONE...This Afternoon and Tonight There is a risk of severe thunderstorms along a cold front passage today. The strongest storms are expected between 4 and 8 pm. The main threats are hail up to the size of golf balls, and isolated 65 mph wind gusts, although an isolated tornado can not be ruled out along highway 20. Large hail is the primary severe weather threat. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday Thunderstorms are possible with an upper air disturbance Wednesday night. A few storms may be marginally severe. .SPOTTER INFORMATION STATEMENT... Spotter activation is possible in the late afternoon and early evening. IAZ001-MNZ089-098-NEZ013-014-SDZ062-067-070-071-121730- Lyon IA-Nobles-Rock-Dixon-Dakota-Minnehaha-Lincoln SD-Clay SD- Union- 1225 PM CDT Mon Jun 11 2018 This Hazardous Weather Outlook is for portions of northwest Iowa, southwest Minnesota, northeast Nebraska, and southeast South Dakota. .DAY ONE...This Afternoon and Tonight Thunderstorms are possible along a cold front mainly in the afternoon hours. A few storms may be marginally severe with the main threat dime to quarter size hail. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday Thunderstorms are possible with an upper air disturbance Wednesday night. A few storms may be marginally severe. .SPOTTER INFORMATION STATEMENT... Spotter activation will likely not be needed today. MNZ071-072-080-081-097-SDZ038>040-050-052>061-063>066-068-069- 121730- Lincoln MN-Lyon MN-Murray-Cottonwood-Pipestone-Beadle-Kingsbury- Brookings-Gregory-Jerauld-Sanborn-Miner-Lake-Moody-Brule-Aurora- Davison-Hanson-McCook-Charles Mix-Douglas-Hutchinson-Turner- Bon Homme-Yankton- 1225 PM CDT Mon Jun 11 2018 This Hazardous Weather Outlook is for portions of southwest Minnesota, central South Dakota, east central South Dakota, south central South Dakota, and southeast South Dakota. .DAY ONE...This Afternoon and Tonight Thunderstorms are possible along a cold front today. These storms are expected to remain below severe limits. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday Thunderstorms are possible with an upper air disturbance Wednesday night. A few storms may be marginally severe. .SPOTTER INFORMATION STATEMENT... Spotter activation will likely not be needed today.
In the hours before
Local storm report, Jun 11, 5:12 PM CDT, 3 hours 10 minutes before
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</html>Local storm report, Jun 11, 5:24 PM CDT, 2 hours 58 minutes before
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</html>Special weather statement, Jun 11, 8:22 PM CDT, 0 minutes before
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</html>Nearby
Special Weather Statements in South Dakota, 2018Every special weather statement in 2018
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.