Alert archive / Nebraska / Mesoscale Discussions in 2016
Mesoscale Discussion 906
The Storm Prediction Center issued this mesoscale discussion at Jun 13, 2016, 7:30 PM MDT for 17 counties in Nebraska; 5 counties in South Dakota. It was in force for 60 min.
The area
The outline as issued.
The facts
- Issued
- Jun 13, 2016, 7:30 PM MDT (01:30 UTC)
- Expired
- Jun 13, 2016, 8:30 PM MDT
- In force
- 60 min
- Issued by
- the Storm Prediction Center
All 22 counties
Arthur County, NE, Blaine County, NE, Box Butte County, NE, Brown 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, Logan County, NE, McPherson County, NE, Morrill County, NE, Sheridan County, NE, Thomas County, NE, Bennett County, SD, Mellette County, SD, Oglala Lakota County, SD, Todd County, SD, Tripp County, SD
The radar
The North Platte radar (KLNX), 109 km from the middle of the area, began a volume at 01:33 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
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 1.5 hours before the alert went out and 172 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
- 1181 J/kg
- Mixed-layer CIN
- -32 J/kg
- Mixed-layer LCL
- 1359 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 59 m²/s²
- 0-3 km storm-relative helicity
- 70 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.7
The text
As transmitted.
079
ACUS11 KWNS 140130
SWOMCD
SPC MCD 140130
NEZ000-SDZ000-140230-
MESOSCALE DISCUSSION 0906
NWS STORM PREDICTION CENTER NORMAN OK
0830 PM CDT MON JUN 13 2016
AREAS AFFECTED...PORTIONS OF S-CNTRL SD AND WRN NEB
CONCERNING...SEVERE THUNDERSTORM WATCH 249...
VALID 140130Z - 140230Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 249
CONTINUES.
SUMMARY...MAINLY A DAMAGING WIND THREAT COULD CONTINUE BEYOND THE
SCHEDULED 02Z EXPIRATION OF WW 249 ACROSS PARTS OF S-CNTRL SD INTO
WRN NEB. A LOCAL EXTENSION IN TIME MAY BE NEEDED.
DISCUSSION...ONGOING CLUSTER OF STRONG TO SEVERE CONVECTION
CONTINUES ACROSS PART OF S-CNTRL SD INTO CHERRY COUNTY NEB AS OF
0130Z. LATEST RAP MESOANALYSIS AND SFC OBSERVATIONS SHOW A CORRIDOR
OF INSTABILITY CHARACTERIZED BY MLCAPE OF 1000-1500 J/KG DOWNSTREAM
OF THIS ACTIVITY...WHICH SHOULD SUPPORT THE MAINTENANCE OF THIS
CLUSTER FOR AT LEAST THE NEXT SEVERAL HOURS AS IT MOVES ESEWD WITH
TIME. MID-LEVEL FLOW IS BEGINNING TO STRENGTHEN ACROSS THE MCD AREA
AS THE UPPER TROUGH OVER THE GREAT BASIN/ROCKIES MOVES EWD...AND
EFFECTIVE BULK SHEAR VALUES OF 35-45 KT MAY ALLOW THE CONVECTION
ACROSS FAR NERN CO INTO THE NEB PANHANDLE TO BECOME ORGANIZED AND
ALSO POSE A DAMAGING WIND RISK FOR THE NEXT SEVERAL HOURS AS IT
MOVES EWD ACROSS WRN NEB. WITH WW 249 SCHEDULED TO EXPIRE AT 02Z...A
LOCAL EXTENSION IN TIME ACROSS THE MCD AREA MAY BE NEEDED TO ADDRESS
THE ONGOING DAMAGING WIND THREAT.
..GLEASON.. 06/14/2016
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...LBF...UNR...CYS...
LAT...LON 41060337 42940333 43640207 43650049 43579972 41099977
41060337SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 13, 6:00 PM MDT | Mesoscale Discussion | SPC | Arthur, Banner, Box Butte, Cherry, Cheyenne, Dawes and 13 more | 90 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 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.