Alert archive / South Dakota / Wind Advisories in 2020
Wind Advisory 22, NWS Aberdeen, SD
NWS Aberdeen, SD issued this wind advisory at Dec 20, 2020, 2:22 AM MST for Corson County, Dewey County, South Dakota. It took effect at Dec 20, 2020, 11:00 AM MST. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- Dec 20, 2020, 2:22 AM MST (09:22 UTC)
- In effect from
- Dec 20, 2020, 11:00 AM MST
- Expired
- Dec 20, 2020, 7:00 PM MST
- In force
- 8 hr
- Issued by
- NWS Aberdeen, SD
Counties Corson County, SD, Dewey County, SD
The radar
The Bismarck radar (KBIS), 150 km from the middle of the area, began a volume at 09:25 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
Bismarck Municip, ND (KBIS), launched 00:00Z, 9.4 hours before the alert went out and 151 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
- 2145 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 33 m²/s²
- 0-3 km storm-relative helicity
- 128 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Aberdeen, SD wrote its last area forecast discussion before this wind advisory went out at Dec 19, 10:26 PM MST, 3 hours 56 minutes earlier.
Area forecast discussion, Dec 19, 10:26 PM MST, 3 hours 56 minutes before
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</html>Hazardous weather outlook, Dec 20, 2:20 AM MST, 2 minutes before
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</html>Nearby
Wind Advisories in South Dakota, 2020Every wind advisory in 2020
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.