Alert archive / Nebraska / Mesoscale Discussions in 2014

Mesoscale Discussion 1175

June 27, 201416 counties in Nebraska; 15 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 27, 2014, 4:57 PM CDT for 16 counties in Nebraska; 15 counties in South Dakota. It was in force for 93 min.

The area

The outline as issued.

The facts

Issued
Jun 27, 2014, 4:57 PM CDT (21:57 UTC)
Expired
Jun 27, 2014, 6:30 PM CDT
In force
93 min
Issued by
the Storm Prediction Center
Chance of a watch
60%
All 31 counties

Blaine County, NE, Brown County, NE, Cherry County, NE, Custer County, NE, Dawes County, NE, Garfield County, NE, Grant County, NE, Holt County, NE, Hooker County, NE, Keya Paha County, NE, Logan County, NE, Loup County, NE, McPherson County, NE, Rock County, NE, Sheridan County, NE, Thomas County, NE, Bennett County, SD, Gregory County, SD, Haakon County, SD, Hughes County, SD, Jackson County, SD, Jones County, SD, Lyman County, SD, Meade County, SD, Mellette County, SD, Oglala Lakota County, SD, Pennington County, SD, Stanley County, SD, Todd County, SD, Tripp County, SD, Ziebach County, SD

The radar

The North Platte radar (KLNX), 162 km from the middle of the area, began a volume at 22:00 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Rapid City, SD (KRAP), launched 12:00Z, 10.0 hours before the alert went out and 173 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, Rapid City, SD at 12:00Z on 2014-06-27Temperature 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, Rapid City, SD at 12:00Z on 2014-06-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 5 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
1804 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
5 m²/s²
0-3 km storm-relative helicity
-3 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 26, 9:00 PM CDTMesoscale DiscussionSPCArthur, Banner, Box Butte, Chase, Cheyenne, Dawes and 10 more90 min
Jun 26, 10:39 PM CDTSevere Thunderstorm WatchSPCChase, Dundy, Frontier, Hayes, Hitchcock, Lincoln and 1 more3 hr
Jun 26, 11:55 PM CDTMesoscale DiscussionSPCArthur, Box Butte, Chase, Dundy, Frontier, Garden and 9 more95 min
Jun 27, 1:37 AM CDTMesoscale DiscussionSPCBuffalo, Custer, Dawson, Frontier, Furnas, Gosper and 7 more23 min
Jun 27, 1:05 PM CDTMesoscale DiscussionSPCBanner, Box Butte, Cheyenne, Deuel, Kimball, Morrill and 2 more115 min
Jun 27, 1:48 PM CDTSevere Thunderstorm WatchSPCBanner, Box Butte, Cheyenne, Dawes, Kimball, Morrill and 2 more6 hr
Jun 27, 3:19 PM CDTMesoscale DiscussionSPCArthur, Chase, Deuel, Dundy, Frontier, Furnas and 8 more86 min
Jun 27, 3:47 PM CDTTornado WatchSPCChase, Deuel, Dundy, Frontier, Furnas, Gosper and 6 more6 hr
Jun 27, 5:17 PM CDTSevere Thunderstorm WatchSPCArthur, Cherry, Garden, Grant, Hooker, Logan and 3 more6 hr
Jun 27, 6:06 PM CDTMesoscale DiscussionSPCChase, Deuel, Dundy, Frontier, Furnas, Gosper and 6 more84 min
Jun 27, 6:47 PM CDTMesoscale DiscussionSPCBanner, Box Butte, Cheyenne, Dawes, Deuel, Kimball and 3 more58 min
Jun 26, 9:13 PM CDTMesoscale DiscussionSPCButte, Custer, Harding, Lawrence, Meade, Pennington and 1 more62 min
Jun 27, 2:54 PM CDTMesoscale DiscussionSPCMarshall, Roberts2 hr

Nearby

Mesoscale Discussions in Nebraska, 2014Mesoscale Discussions in South Dakota, 2014Every mesoscale discussion in 2014

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.