Alert archive / North Dakota / Mesoscale Discussions in 2012
Mesoscale Discussion 1201
The Storm Prediction Center issued this mesoscale discussion at Jun 17, 2012, 7:20 PM CDT for Kittson County, Marshall County, Minnesota; 12 counties in North Dakota. It was in force for 85 min.
The area
The outline as issued.
The facts
- Issued
- Jun 17, 2012, 7:20 PM CDT (00:20 UTC)
- Expired
- Jun 17, 2012, 8:45 PM CDT
- In force
- 85 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 40%
Counties Kittson County, MN, Marshall County, MN, Bottineau County, ND, Burke County, ND, Cavalier County, ND, McHenry County, ND, Pembina County, ND, Pierce County, ND, Ramsey County, ND, Renville County, ND, Rolette County, ND, Towner County, ND, Walsh County, ND, Ward County, ND
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 00:00Z, 0.3 hours before the alert went out and 206 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
- 2132 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 48 m²/s²
- 0-3 km storm-relative helicity
- 102 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
413 ACUS11 KWNS 180020 SWOMCD SPC MCD 180020 MNZ000-NDZ000-180145- MESOSCALE DISCUSSION 1201 NWS STORM PREDICTION CENTER NORMAN OK 0720 PM CDT SUN JUN 17 2012 AREAS AFFECTED...NRN ND...NWRN MN CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE VALID 180020Z - 180145Z PROBABILITY OF WATCH ISSUANCE...40 PERCENT SUMMARY...SVR WEATHER THREAT WILL EXIST ACROSS NRN ND AND NWRN MN INTO PART OF THE NIGHT. CONVECTIVE TRENDS WILL BE MONITORED FOR POSSIBLE WW. DISCUSSION...EVENING MESOANALYSIS SHOWS AN AREA OF LOW PRESSURE SITUATED OVER SERN SK...WITH A COLD FRONT EXTENDING SWD INTO THE NRN HIGH PLAINS. WEDGE OF HIGH THETA-E AIR WAS ALSO OBSERVED ADVANCING NWD ACROSS ERN ND. CLUSTERS OF THUNDERSTORMS HAVE DEVELOPED OVER NWRN/N-CNTRL ND...MOVING EWD AT 30-40 KT...AND APPEAR TO BE TIED TO AN UPPER IMPULSE MOVING ACROSS THE REGION. THIS UPR FEATURE MAY AID IN MAINTAINING STORMS AFTER DARK...WITH AN INCREASE IN COVERAGE AND INTENSITY POSSIBLE IF WARM/MOIST SURFACE AIRMASS OVER ERN ND CAN CONTINUE TO ADVECT NWD. DEEP-LAYER VERTICAL WIND SHEAR IS VERY FAVORABLE FOR BOWING THUNDERSTORMS AND SUPERCELLS...WITH AN ATTENDANT THREAT FOR LARGE HAIL AND DAMAGING WIND GUSTS. IN ADDITION...LOW-LEVEL E-SELYS QUICKLY VEER TO WLY AT 3 KM AGL...WHICH MAY SUPPORT AN ISOLATED TORNADO AS WELL. ..GARNER/CARBIN.. 06/18/2012 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...FGF...BIS... LAT...LON 48720275 48970258 49019626 48109624 48090125 48720275
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 17, 7:27 PM CDT | Mesoscale Discussion | SPC | Anoka, Benton, Carver, Chippewa, Chisago, Dakota and 18 more | 93 min |
| Jun 17, 7:57 PM CDT | Severe Thunderstorm Watch | SPC | Aitkin, Anoka, Benton, Blue Earth, Brown, Carlton and 31 more | 8 hr |
| Jun 17, 10:55 PM CDT | Mesoscale Discussion | SPC | Carver, Dakota, Dodge, Goodhue, Le Sueur, McLeod and 8 more | 95 min |
| Jun 18, 1:28 AM CDT | Mesoscale Discussion | SPC | Dakota, Dodge, Fillmore, Goodhue, Hennepin, Houston and 7 more | 62 min |
| Jun 18, 6:20 PM CDT | Mesoscale Discussion | SPC | McLean, Mountrail, Williams | 85 min |
Nearby
Mesoscale Discussions in North Dakota, 2012Mesoscale Discussions in Minnesota, 2012Every mesoscale discussion in 2012
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.