Alert archive / South Dakota / Mesoscale Discussions in 2016
Mesoscale Discussion 795
The Storm Prediction Center issued this mesoscale discussion at May 30, 2016, 6:37 PM CDT for 9 counties in Minnesota; 15 counties in North Dakota; 43 counties in South Dakota. It was in force for 113 min.
The area
The outline as issued.
The facts
- Issued
- May 30, 2016, 6:37 PM CDT (23:37 UTC)
- Expired
- May 30, 2016, 8:30 PM CDT
- In force
- 113 min
- Issued by
- the Storm Prediction Center
All 67 counties
Big Stone County, MN, Clay County, MN, Mahnomen County, MN, Norman County, MN, Pennington County, MN, Polk County, MN, Red Lake County, MN, Traverse County, MN, Wilkin County, MN, Barnes County, ND, Cass County, ND, Dickey County, ND, Emmons County, ND, Griggs County, ND, Kidder County, ND, LaMoure County, ND, Logan County, ND, McIntosh County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Steele County, ND, Stutsman County, ND, Traill County, ND, Aurora County, SD, Beadle County, SD, Bon Homme County, SD, Brown County, SD, Brule County, SD, Buffalo County, SD, Campbell County, SD, Charles Mix County, SD, Clark County, SD, Codington County, SD, Davison County, SD, Day County, SD, Deuel County, SD, Douglas County, SD, Edmunds County, SD, Faulk County, SD, Grant County, SD, Gregory County, SD, Hamlin County, SD, Hand County, SD, Hanson County, SD, Hughes County, SD, Hutchinson County, SD, Hyde County, SD, Jerauld County, SD, Jones County, SD, Kingsbury County, SD, Lake County, SD, Lyman County, SD, Marshall County, SD, McCook County, SD, McPherson County, SD, Mellette County, SD, Miner County, SD, Potter County, SD, Roberts County, SD, Sanborn County, SD, Spink County, SD, Stanley County, SD, Sully County, SD, Todd County, SD, Tripp County, SD, Walworth County, SD
The radar
The Aberdeen radar (KABR), 74 km from the middle of the area, began a volume at 23:38 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, 11.6 hours before the alert went out and 83 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
- 25 J/kg
- Mixed-layer CIN
- -211 J/kg
- Mixed-layer LCL
- 1597 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 4 m²/s²
- 0-3 km storm-relative helicity
- 19 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
881
ACUS11 KWNS 302337
SWOMCD
SPC MCD 302337
MNZ000-SDZ000-NDZ000-NEZ000-310130-
MESOSCALE DISCUSSION 0795
NWS STORM PREDICTION CENTER NORMAN OK
0637 PM CDT MON MAY 30 2016
AREAS AFFECTED...THE ERN DAKOTAS INTO NWRN MN
CONCERNING...SEVERE THUNDERSTORM WATCH 231...
VALID 302337Z - 310130Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 231
CONTINUES.
SUMMARY...SEVERE HAIL AND WIND REMAIN POSSIBLE ACROSS THE WATCH AREA
WITH THE MAIN THREAT OVER SOUTH DAKOTA.
DISCUSSION...STORMS ARE BECOMING LINEAR ALONG A SURGING COLD FRONT
FROM SRN ND ACROSS CNTRL SD AND NRN NEB. MODERATE INSTABILITY
REMAINS OVER THE AREA DUE TO COOL TEMPERATURES ALOFT DESPITE
MARGINAL LOW-LEVEL MOISTURE. GIVEN THE FAVORABLE FORCING ALONG THE
FRONT AND AN INCREASING SLY LOW-LEVEL JET TO AID IN STORM RELATIVE
INFLOW...A MARGINAL HAIL/WIND THREAT SHOULD PERSIST THIS EVENING
TOWARD THE MN BORDER.
..JEWELL.. 05/30/2016
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...MPX...FGF...FSD...ABR...BIS...LBF...UNR...
LAT...LON 42980151 43750096 44980074 45790070 46370103 46730038
47529821 48219624 47949552 45369628 42889769 43000041
42980151SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 30, 2:48 PM CDT | Severe Thunderstorm Watch | SPC | Big Stone, Clay, Mahnomen, Norman, Pennington, Polk and 3 more | 7 hr |
| May 30, 5:14 PM CDT | Mesoscale Discussion | SPC | Blue Earth, Brown, Cottonwood, Faribault, Jackson, Martin and 3 more | 91 min |
| May 30, 1:14 PM CDT | Mesoscale Discussion | SPC | Benson, Eddy, Foster, Sheridan, Wells | 61 min |
| May 30, 2:16 PM CDT | Mesoscale Discussion | SPC | Barnes, Dickey, Emmons, Griggs, Kidder, LaMoure and 5 more | 59 min |
Nearby
Mesoscale Discussions in South Dakota, 2016Mesoscale Discussions in North Dakota, 2016Mesoscale Discussions in Minnesota, 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.