Alert archive / Minnesota / Mesoscale Discussions in 2005
Mesoscale Discussion 2136
The Storm Prediction Center issued this mesoscale discussion at Sep 3, 2005, 6:46 PM CDT for 30 counties in Minnesota. It was in force for 89 min.
The area
The outline as issued.
The facts
- Issued
- Sep 3, 2005, 6:46 PM CDT (23:46 UTC)
- Expired
- Sep 3, 2005, 8:15 PM CDT
- In force
- 89 min
- Issued by
- the Storm Prediction Center
All 30 counties
Anoka County, MN, Benton County, MN, Carver County, MN, Chippewa County, MN, Dakota County, MN, Douglas County, MN, Grant County, MN, Hennepin County, MN, Isanti County, MN, Kandiyohi County, MN, Lac qui Parle County, MN, Le Sueur County, MN, McLeod County, MN, Meeker County, MN, Nicollet County, MN, Pope County, MN, Ramsey County, MN, Renville County, MN, Rice County, MN, Scott County, MN, Sherburne County, MN, Sibley County, MN, Stearns County, MN, Steele County, MN, Stevens County, MN, Swift County, MN, Todd County, MN, Waseca County, MN, Wright County, MN, Yellow Medicine County, MN
The radar
The Minneapolis radar (KMPX), 121 km from the middle of the area, began a volume at 23:46 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 12:00Z, 11.8 hours before the alert went out and 280 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
- 713 J/kg
- Mixed-layer CIN
- -297 J/kg
- Mixed-layer LCL
- 1214 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 203 m²/s²
- 0-3 km storm-relative helicity
- 210 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 ACUS11 KWNS 032346 SWOMCD SPC MCD 032346 MNZ000-040115- MESOSCALE DISCUSSION 2136 NWS STORM PREDICTION CENTER NORMAN OK 0646 PM CDT SAT SEP 03 2005 AREAS AFFECTED...SRN MN CONCERNING...SEVERE THUNDERSTORM WATCH 764... VALID 032346Z - 040115Z WW 764 REMAINS IN EFFECT FOR PARTS OF SRN MN. POTENTIAL STILL EXISTS FOR STORMS TO INITIATE ALONG ELEVATED FRONTAL ZONE OVER PARTS OF SRN/CNTRL MN THIS EVENING. LOW LEVEL INFLOW OF HOT AND VERY UNSTABLE AIR WAS BEING DIRECTED ACROSS THE FRONTAL BOUNDARY AND RESULTING IN NEW TSTM DEVELOPMENT OVER DOUGLAS... POPE...AND STERNS COUNTIES IN SCNTRL MN. SHEAR AND FORCING WITHIN THE FRONTAL ZONE ARE MORE THAN SUFFICIENT FOR ADDITIONAL SEVERE WEATHER AND PERHAPS ANOTHER SMALL MCS TO EVOLVE LATER THIS EVENING. THIS ACTIVITY WOULD BE MAINTAINED ALONG THE INSTABILITY GRADIENT AS IT SPREADS SEWD. ANOTHER ROUND OF SEVERE WEATHER COULD MOVE INTO THE SAME AREAS THAT WERE AFFECTED BY EARLIER STORMS. ..CARBIN.. 09/03/2005 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...ARX...MPX...FGF...FSD...ABR... 46439614 45549301 43829298 44759621
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 3, 4:00 AM CDT | Mesoscale Discussion | SPC | Clay, Grant, Norman, Traverse, Wilkin | 3 hr |
| Sep 3, 1:40 PM CDT | Mesoscale Discussion | SPC | Big Stone, Blue Earth, Brown, Carver, Chippewa, Douglas and 22 more | 95 min |
| Sep 3, 2:20 PM CDT | Severe Thunderstorm Watch | SPC | Anoka, Benton, Carver, Chippewa, Dakota, Douglas and 24 more | 6 hr |
| Sep 3, 5:11 PM CDT | Mesoscale Discussion | SPC | Anoka, Benton, Carver, Chippewa, Chisago, Dakota and 25 more | 64 min |
| Sep 3, 5:30 PM CDT | Severe Thunderstorm Watch | SPC | Dodge, Fillmore, Goodhue, Houston, Mower, Olmsted and 2 more | 3 hr |
Nearby
Mesoscale Discussions in Minnesota, 2005Every mesoscale discussion in 2005
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.