Alert archive / North Dakota / Mesoscale Discussions in 2022

Mesoscale Discussion 455

April 12, 202227 counties in North Dakota

The Storm Prediction Center issued this mesoscale discussion at Apr 12, 2022, 12:41 PM MDT for 27 counties in North Dakota. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Apr 12, 2022, 12:41 PM MDT (18:41 UTC)
Expired
Apr 12, 2022, 5:45 PM MDT
In force
5 hr
Issued by
the Storm Prediction Center
Concerning
Blizzard
All 27 counties

Adams County, ND, Benson County, ND, Billings County, ND, Burleigh County, ND, Dunn County, ND, Eddy County, ND, Foster County, ND, Golden Valley County, ND, Grand Forks County, ND, Grant County, ND, Griggs County, ND, Hettinger County, ND, Kidder County, ND, McHenry County, ND, McLean County, ND, Mercer County, ND, Morton County, ND, Nelson County, ND, Oliver County, ND, Pierce County, ND, Ramsey County, ND, Sheridan County, ND, Slope County, ND, Stark County, ND, Steele County, ND, Stutsman County, ND, Wells County, ND

The radar

The Bismarck radar (KBIS), 47 km from the middle of the area, began a volume at 18:43 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

Aberdeen, SD (KABR), launched 12:00Z, 6.7 hours before the alert went out and 312 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.

Skew-T log-pSkew-T log-p diagram, Aberdeen, SD at 12:00Z on 2022-04-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Aberdeen, SD at 12:00Z on 2022-04-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 475 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1320 m above ground
0-6 km bulk shear
86 kt
0-1 km storm-relative helicity
475 m²/s²
0-3 km storm-relative helicity
539 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 12, 7:48 AM MDTMesoscale DiscussionSPCAdams, Billings, Bowman, Burleigh, Dunn, Golden Valley and 13 more4 hr

Nearby

Mesoscale Discussions in North Dakota, 2022Every mesoscale discussion in 2022

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.