Alert archive / South Dakota / Mesoscale Discussions in 2016
Mesoscale Discussion 968
The Storm Prediction Center issued this mesoscale discussion at Jun 17, 2016, 6:13 PM CDT for 5 counties in Iowa; 8 counties in Minnesota; 14 counties in South Dakota. It was in force for 92 min.
The area
The outline as issued.
The facts
- Issued
- Jun 17, 2016, 6:13 PM CDT (23:13 UTC)
- Expired
- Jun 17, 2016, 7:45 PM CDT
- In force
- 92 min
- Issued by
- the Storm Prediction Center
All 27 counties
Dickinson County, IA, Lyon County, IA, O'Brien County, IA, Osceola County, IA, Sioux County, IA, Blue Earth County, MN, Faribault County, MN, Jackson County, MN, Martin County, MN, Nobles County, MN, Pipestone County, MN, Rock County, MN, Watonwan County, MN, Clay County, SD, Davison County, SD, Hanson County, SD, Hutchinson County, SD, Lake County, SD, Lincoln County, SD, McCook County, SD, Miner County, SD, Minnehaha County, SD, Moody County, SD, Sanborn County, SD, Turner County, SD, Union County, SD, Yankton County, SD
The radar
The Sioux Falls radar (KFSD), 43 km from the middle of the area, began a volume at 23:12 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, 11.2 hours before the alert went out and 221 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
- 2757 J/kg
- Mixed-layer CIN
- -269 J/kg
- Mixed-layer LCL
- 1253 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 284 m²/s²
- 0-3 km storm-relative helicity
- 292 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
936
ACUS11 KWNS 172314
SWOMCD
SPC MCD 172313
MNZ000-IAZ000-SDZ000-180045-
MESOSCALE DISCUSSION 0968
NWS STORM PREDICTION CENTER NORMAN OK
0613 PM CDT FRI JUN 17 2016
AREAS AFFECTED...SWRN MN...SERN SD AND NWRN IA
CONCERNING...SEVERE THUNDERSTORM WATCH 267...
VALID 172313Z - 180045Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 267
CONTINUES.
SUMMARY...ISOLATED DAMAGING WIND AND LARGE HAIL IS EXPECTED TO
REMAIN LIKELY AS STORMS DEVELOP SWWD THROUGH SWRN MN...SERN SD AND
NWRN IA INTO MID EVENING.
DISCUSSION...LINE OF THUNDERSTORMS EXTENDS FROM ECNTRL SD INTO SWRN
MN MOVING SWWD AT AROUND 25 KT...THOUGH SOME ACCELERATION ALONG
PORTION OF THE LINE OVER SERN MN HAS BEEN RECENTLY OBSERVED. THE
DOWNSTREAM ATMOSPHERE IS VERY UNSTABLE /3000-4000 J/KG MLCAPE/ WITH
SFC TEMPERATURES IN THE LOW 90S...LOW 70S DEWPOINTS AND VERY STEEP
LOW TO MID-LEVEL LAPSE RATES. FSD VWP INDICATES 20 KT SLY WINDS IN
THE SFC-2 KM LAYER AND WILL CONTINUE TO PROMOTE SSWWD PROPAGATION
DOWN THE INSTABILITY GRADIENT THROUGH SERN SD...SWRN MN INTO NWRN IA
DURING THE NEXT COUPLE HOURS. STORMS ARE EMBEDDED WITHIN 25-35 KT
0-6 KM SHEAR SUPPORTIVE OF MOSTLY MULTICELLS...THOUGH SOME MARGINAL
SUPERCELL STRUCTURES ARE POSSIBLE.
..DIAL.. 06/17/2016
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...MPX...DMX...FSD...
LAT...LON 44309764 43999586 44019464 44159388 43689388 43399490
42719590 42939738 43109821 43899840 44309764SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 17, 2:31 PM CDT | Mesoscale Discussion | SPC | Lyon, Osceola, Sioux | 89 min |
| Jun 17, 3:06 PM CDT | Severe Thunderstorm Watch | SPC | Dickinson, Lyon, O'Brien, Osceola, Plymouth, Sioux | 7 hr |
| Jun 17, 5:44 AM CDT | Mesoscale Discussion | SPC | Kittson, Marshall | 61 min |
| Jun 17, 7:20 AM CDT | Severe Thunderstorm Watch | SPC | Beltrami, Clearwater, Kittson, Lake of the Woods, Marshall, Pennington and 3 more | 4 hr |
| Jun 17, 7:32 AM CDT | Mesoscale Discussion | SPC | Beltrami, Clearwater, Kittson, Lake of the Woods, Mahnomen, Marshall and 5 more | 28 min |
| Jun 17, 9:56 AM CDT | Mesoscale Discussion | SPC | Beltrami, Cass, Clearwater, Douglas, Grant, Hubbard and 4 more | 34 min |
Nearby
Mesoscale Discussions in South Dakota, 2016Mesoscale Discussions in Minnesota, 2016Mesoscale Discussions in Iowa, 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.