Alert archive / North Dakota / Winter Weather Advisories in 2021
Winter Weather Advisory 5, NWS Bismarck, ND
NWS Bismarck, ND issued this winter weather advisory at Oct 12, 2021, 3:01 AM MDT for Bowman County, Golden Valley County, Slope County, North Dakota. It took effect at Oct 12, 2021, 6:00 PM MDT. It was in force for .
The area
The counties it named.
The facts
- Issued
- Oct 12, 2021, 3:01 AM MDT (09:01 UTC)
- In effect from
- Oct 12, 2021, 6:00 PM MDT
- Expired
- Oct 12, 2021, 2:03 PM MDT
- In force
- Issued by
- NWS Bismarck, ND
Counties Bowman County, ND, Golden Valley County, ND, Slope County, ND
The radar
The Bismarck radar (KBIS), 220 km from the middle of the area, began a volume at 09:05 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
Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 9.0 hours before the alert went out and 295 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
- 1741 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- -44 m²/s²
- 0-3 km storm-relative helicity
- 135 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The office that day
Everything else NWS Bismarck, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 12, 2:03 PM MDT | Winter Storm Warning | BIS | Bowman, Golden Valley, Slope | 30 hr |
| Oct 12, 2:03 PM MDT | Winter Weather Advisory | BIS | Billings, Divide, McKenzie, Williams | 30 hr |
| Oct 12, 2:07 PM MDT | Wind Advisory | BIS | Adams, Billings, Bowman, Burke, Burleigh, Divide and 13 more | 30 hr |
Nearby
Winter Weather Advisories in North Dakota, 2021Every winter weather advisory 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.