Alert archive / Nebraska / Mesoscale Discussions in 2016
Mesoscale Discussion 903
The Storm Prediction Center issued this mesoscale discussion at Jun 13, 2016, 6:00 PM MDT for 5 states. It was in force for 90 min.
The area
The outline as issued.
The facts
- Issued
- Jun 13, 2016, 6:00 PM MDT (00:00 UTC)
- Expired
- Jun 13, 2016, 7:30 PM MDT
- In force
- 90 min
- Issued by
- the Storm Prediction Center
All 67 counties
Carter County, MT, Custer County, MT, Dawson County, MT, Fallon County, MT, McCone County, MT, Powder River County, MT, Prairie County, MT, Richland County, MT, Roosevelt County, MT, Sheridan County, MT, Wibaux County, MT, Adams County, ND, Billings County, ND, Bowman County, ND, Burke County, ND, Divide County, ND, Dunn County, ND, Golden Valley County, ND, Grant County, ND, Hettinger County, ND, McKenzie County, ND, Mercer County, ND, Mountrail County, ND, Slope County, ND, Stark County, ND, Williams County, ND, Arthur County, NE, Banner County, NE, Box Butte County, NE, Cherry County, NE, Cheyenne County, NE, Dawes County, NE, Deuel County, NE, Garden County, NE, Grant County, NE, Hooker County, NE, Keith County, NE, Kimball County, NE, Logan County, NE, McPherson County, NE, Morrill County, NE, Scotts Bluff County, NE, Sheridan County, NE, Sioux County, NE, Thomas County, NE, Bennett County, SD, Butte County, SD, Custer County, SD, Fall River County, SD, Haakon County, SD, Harding County, SD, Jackson County, SD, Lawrence County, SD, Meade County, SD, Oglala Lakota County, SD, Pennington County, SD, Perkins County, SD, Todd County, SD, Ziebach County, SD, Campbell County, WY, Converse County, WY, Crook County, WY, Goshen County, WY, Laramie County, WY, Niobrara County, WY, Platte County, WY, Weston County, WY
The radar
The Rapid City radar (KUDX), 148 km from the middle of the area, began a volume at 00:04 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
Rapid City, SD (KRAP), launched 00:00Z, 0.0 hours before the alert went out and 150 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
- 2044 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 98 m²/s²
- 0-3 km storm-relative helicity
- 76 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
071
ACUS11 KWNS 140001
SWOMCD
SPC MCD 140000
SDZ000-NEZ000-NDZ000-MTZ000-WYZ000-140130-
MESOSCALE DISCUSSION 0903
NWS STORM PREDICTION CENTER NORMAN OK
0700 PM CDT MON JUN 13 2016
AREAS AFFECTED...PORTIONS OF ERN MT/WY AND WRN ND/SD/NEB
CONCERNING...SEVERE THUNDERSTORM WATCH 249...251...
VALID 140000Z - 140130Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH
249...251...CONTINUES.
SUMMARY...THE SEVERE THREAT CONTINUES ACROSS PARTS OF WW 249 AND
251. LARGE HAIL AND DAMAGING WINDS REMAIN THE PRIMARY RISKS.
DISCUSSION...ONGOING LINE OF CONVECTION ACROSS WRN SD WITH A HISTORY
OF OBSERVED WIND GUSTS AOA 50 KT IS MOVING EWD AROUND 30-35 KT...AND
IT WILL CONTINUE TO POSE MAINLY A DAMAGING WIND THREAT IN THE SHORT
TERM. THIS ACTIVITY WILL LIKELY STRUGGLE TO MAINTAIN INTENSITY AS IT
MOVES EWD INTO CNTRL SD GIVEN THAT A MUCH LESS UNSTABLE AIRMASS IS
PRESENT THERE. ADDITIONAL CONVECTIVE DEVELOPMENT IS OCCURRING IN ERN
WY WITH UPSLOPE ELY FLOW CONTINUING ALONG THE HIGHER TERRAIN...AND
THE SEVERE THREAT ACROSS WRN PORTIONS OF WW 249 IN WY CONTINUES.
ONGOING STRONG TO SEVERE CONVECTION IN NERN CO MAY EVENTUALLY GROW
UPSCALE INTO ONE OR MORE BOWING LINE SEGMENTS AS IT SPREADS NEWD
INTO PARTS OF WRN NEB...POSING MAINLY A DAMAGING WIND THREAT.
THUNDERSTORMS ACROSS ERN MT AND WRN ND HAVE STRUGGLED TO BECOME
SEVERE SO FAR...PROBABLY DUE TO LIMITED INSTABILITY WITH NWD EXTENT.
REGARDLESS...RECENT RADAR TRENDS ACROSS THIS REGION SUGGEST HAIL
APPROACHING SEVERE LEVELS WILL REMAIN POSSIBLE FOR THE NEXT SEVERAL
HOURS ACROSS WW 251.
..GLEASON.. 06/14/2016
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...ABR...BIS...LBF...UNR...CYS...BYZ...GGW...
LAT...LON 49030505 49050205 44700103 41430029 41010204 41040523
42460595 44590593 45920646 47350684 49030505SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 14, 1:00 PM MDT | Mesoscale Discussion | SPC | Blaine, Broadwater, Cascade, Chouteau, Fergus, Gallatin and 6 more | 2 hr |
| Jun 14, 4:03 PM MDT | Mesoscale Discussion | SPC | Blaine, Daniels, McCone, Phillips, Roosevelt, Valley | 2 hr |
| Jun 13, 7:30 PM MDT | Mesoscale Discussion | SPC | Arthur, Blaine, Box Butte, Brown, Cherry, Cheyenne and 11 more | 60 min |
| Jun 13, 10:26 PM MDT | Mesoscale Discussion | SPC | Blaine, Brown, Chase, Custer, Dawson, Dundy and 11 more | 2 hr |
| Jun 14, 10:45 AM MDT | Mesoscale Discussion | SPC | Burt, Butler, Cass, Clay, Colfax, Cuming and 17 more | 2 hr |
| Jun 14, 11:43 AM MDT | Severe Thunderstorm Watch | SPC | Burt, Cuming, Dakota, Dixon, Dodge, Douglas and 4 more | 8 hr |
| Jun 14, 1:51 PM MDT | Mesoscale Discussion | SPC | Burt, Dakota, Dodge, Douglas, Sarpy, Saunders and 2 more | 114 min |
| Jun 14, 2:31 PM MDT | Mesoscale Discussion | SPC | Blaine, Brown, Cherry, Garfield, Keya Paha, Loup and 1 more | 119 min |
| Jun 14, 5:15 PM MDT | Mesoscale Discussion | SPC | Richardson | 3 hr |
| Jun 14, 1:33 PM MDT | Tornado Watch | SPC | Grant, Marshall, Roberts | 5 hr |
Nearby
Mesoscale Discussions in Nebraska, 2016Mesoscale Discussions in North Dakota, 2016Mesoscale Discussions in South Dakota, 2016Every mesoscale discussion in 2016
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.