Alert archive / Minnesota / Mesoscale Discussions in 2011
Mesoscale Discussion 1027
The Storm Prediction Center issued this mesoscale discussion at May 30, 2011, 2:52 AM CDT for 36 counties in Minnesota; 10 counties in South Dakota. It was in force for 113 min.
The area
The outline as issued.
The facts
- Issued
- May 30, 2011, 2:52 AM CDT (07:52 UTC)
- Expired
- May 30, 2011, 4:45 AM CDT
- In force
- 113 min
- Issued by
- the Storm Prediction Center
All 46 counties
Anoka County, MN, Benton County, MN, Big Stone County, MN, Blue Earth County, MN, Brown County, MN, Carver County, MN, Chippewa County, MN, Cottonwood County, MN, Hennepin County, MN, Isanti County, MN, Jackson County, MN, Kandiyohi County, MN, Lac qui Parle County, MN, Le Sueur County, MN, Lincoln County, MN, Lyon County, MN, Martin County, MN, McLeod County, MN, Meeker County, MN, Murray County, MN, Nicollet County, MN, Pipestone County, MN, Pope County, MN, Ramsey County, MN, Redwood County, MN, Renville County, MN, Scott County, MN, Sherburne County, MN, Sibley County, MN, Stearns County, MN, Stevens County, MN, Swift County, MN, Washington County, MN, Watonwan County, MN, Wright County, MN, Yellow Medicine County, MN, Beadle County, SD, Brookings County, SD, Clark County, SD, Codington County, SD, Deuel County, SD, Grant County, SD, Hamlin County, SD, Kingsbury County, SD, Moody County, SD, Spink County, SD
The radar
The Sioux Falls radar (KFSD), 145 km from the middle of the area, began a volume at 07:52 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
Aberdeen, SD (KABR), launched 00:00Z, 7.9 hours before the alert went out and 185 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
- 1349 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- 69 m²/s²
- 0-3 km storm-relative helicity
- 561 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
744
ACUS11 KWNS 300752
SWOMCD
SPC MCD 300752
WIZ000-MNZ000-IAZ000-SDZ000-300945-
MESOSCALE DISCUSSION 1027
NWS STORM PREDICTION CENTER NORMAN OK
0252 AM CDT MON MAY 30 2011
AREAS AFFECTED...ERN SE/SWRN MN
CONCERNING...SEVERE THUNDERSTORM WATCH 400...
VALID 300752Z - 300945Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 400
CONTINUES.
A FEW STRONGER STORMS CAPABLE OF PRODUCING HAIL CONTINUE ACROSS THE
WW ATTM.
LATEST RADAR LOOP SHOWS A BAND OF CONVECTION MOVING NEWD ACROSS ERN
SD AND ADJACENT SWRN MN ATTM...WITH A FEW STRONGER STORMS CAPABLE OF
PRODUCING SEVERE HAIL INDICATED.
WITH A PERSISTENT 70 KT LOW-LEVEL JET NOSING INTO THIS
REGION...EXPECT CONVECTION TO CONTINUE -- AND PERHAPS EXPAND -- OVER
THE NEXT FEW HOURS...ALONG WITH ONGOING/ISOLATED HAIL POTENTIAL.
WITH THE WATCH SCHEDULED TO EXPIRE AT 10Z AND LIKELIHOOD FOR STORMS
TO GRADUALLY SHIFT OUT OF THE WATCH...NEW WATCH MAY BECOME
NECESSARY.
..GOSS.. 05/30/2011
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...DLH...MPX...DMX...FSD...ABR...
LAT...LON 44379860 44929860 45669640 45739304 45099267 43469445
44379860SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 29, 10:58 PM CDT | Severe Thunderstorm Watch | SPC | Brown, Chippewa, Cottonwood, Jackson, Kandiyohi, Lac qui Parle and 16 more | 6 hr |
| May 30, 4:05 AM CDT | Severe Thunderstorm Watch | SPC | Benton, Big Stone, Chippewa, Chisago, Douglas, Grant and 19 more | 5 hr |
| May 30, 6:51 AM CDT | Mesoscale Discussion | SPC | Anoka, Benton, Carlton, Chisago, Hennepin, Isanti and 9 more | 114 min |
| May 30, 1:40 PM CDT | Mesoscale Discussion | SPC | Big Stone, Lac qui Parle, Lincoln, Pipestone, Traverse | 95 min |
| May 30, 2:08 PM CDT | Tornado Watch | SPC | Lincoln, Lyon, Pipestone, Rock | 7 hr |
| May 30, 3:52 PM CDT | Tornado Watch | SPC | Becker, Benton, Big Stone, Cass, Chippewa, Clay and 25 more | 7 hr |
| May 30, 6:17 PM CDT | Mesoscale Discussion | SPC | Becker, Big Stone, Chippewa, Clay, Douglas, Grant and 22 more | 118 min |
| May 29, 9:24 PM CDT | Mesoscale Discussion | SPC | Clay, Union | 96 min |
Nearby
Mesoscale Discussions in Minnesota, 2011Mesoscale Discussions in South Dakota, 2011Every mesoscale discussion in 2011
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.