Alert archive / North Dakota / Mesoscale Discussions in 2018

Mesoscale Discussion 1056

July 14, 201818 counties in North Dakota

The Storm Prediction Center issued this mesoscale discussion at Jul 14, 2018, 5:48 PM CDT for 18 counties in North Dakota. It was in force for 87 min.

The area

The outline as issued.

The facts

Issued
Jul 14, 2018, 5:48 PM CDT (22:48 UTC)
Expired
Jul 14, 2018, 7:15 PM CDT
In force
87 min
Issued by
the Storm Prediction Center

Counties Benson County, ND, Burleigh County, ND, Cavalier County, ND, Eddy County, ND, Foster County, ND, Grand Forks County, ND, Grant County, ND, Griggs County, ND, Kidder County, ND, Morton County, ND, Nelson County, ND, Pembina County, ND, Ramsey County, ND, Sheridan County, ND, Stutsman County, ND, Towner County, ND, Walsh County, ND, Wells County, ND

The radar

The Minot AFB radar (KMBX), 148 km from the middle of the area, began a volume at 22:51 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 12:00Z, 10.8 hours before the alert went out and 232 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, Bismarck Municip, ND at 12:00Z on 2018-07-14Temperature 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, Bismarck Municip, ND at 12:00Z on 2018-07-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 square meters per square second.193958Sfc1 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
1882 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
85 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
Jul 14, 3:18 PM CDTMesoscale DiscussionSPCAdams, Bottineau, Burleigh, Grant, Hettinger, McHenry and 8 more117 min
Jul 14, 4:14 PM CDTSevere Thunderstorm WatchSPCBenson, Bottineau, Burleigh, Cavalier, Dunn, Grant and 16 more6 hr

Nearby

Mesoscale Discussions in North Dakota, 2018Every mesoscale discussion 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.