Alert archive / Minnesota / Mesoscale Discussions in 2007
Mesoscale Discussion 913
The Storm Prediction Center issued this mesoscale discussion at May 28, 2007, 8:02 PM CDT for 9 counties in Minnesota; 9 counties in North Dakota. It was in force for 88 min.
The area
The outline as issued.
The facts
- Issued
- May 28, 2007, 8:02 PM CDT (01:02 UTC)
- Expired
- May 28, 2007, 9:30 PM CDT
- In force
- 88 min
- Issued by
- the Storm Prediction Center
Counties Clay County, MN, Kittson County, MN, Mahnomen County, MN, Marshall County, MN, Norman County, MN, Pennington County, MN, Polk County, MN, Red Lake County, MN, Roseau County, MN, Barnes County, ND, Cass County, ND, Grand Forks County, ND, Griggs County, ND, Nelson County, ND, Pembina County, ND, Steele County, ND, Traill County, ND, Walsh County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 67 km from the middle of the area, began a volume at 01:04 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
International Fa, MN (KINL), launched 00:00Z, 1.0 hours before the alert went out and 254 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
- 1159 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 133 m²/s²
- 0-3 km storm-relative helicity
- 238 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 ACUS11 KWNS 290102 SWOMCD SPC MCD 290102 MNZ000-NDZ000-290230- MESOSCALE DISCUSSION 0913 NWS STORM PREDICTION CENTER NORMAN OK 0802 PM CDT MON MAY 28 2007 AREAS AFFECTED...PORTIONS E-CENTRAL/NERN ND...NWRN MN. CONCERNING...TORNADO WATCH 303... VALID 290102Z - 290230Z THE SEVERE WEATHER THREAT FOR TORNADO WATCH 303 CONTINUES. MOST INTENSE STORM SO FAR...WHICH PRODUCED TORNADO IN KITTSON COUNTY MN AT 0025Z...IS TURNING MORE RIGHTWARD AS OF 0045Z BUT STILL SHOULD MOVE INTO CANADA BEFORE 115Z. HOWEVER...ADDITIONAL DEVELOPMENT IS POSSIBLE INVOF SFC CYCLONE -- ANALYZED OVER NERN ND BETWEEN DVL-RDR -- AND FRONTAL ZONE EXTENDING SW-NE THROUGH THAT CYCLONE. MOST FAVORABLY BACKED SFC WINDS...OVERLAP OF STRONGEST DEEP-LAYER BULK SHEAR AND WARM SECTOR...AND LARGEST LOW LEVEL HODOGRAPHS EACH SHOULD REMAIN INVOF MN/MB BORDER FOR ANOTHER HOUR OR TWO. THEREAFTER...ALTHOUGH FRONTAL ZONE AND BACKED SFC FLOW WILL SHIFT NEWD ACROSS BORDER...STRENGTHENING LLJ SHOULD HELP TO MAINTAIN FAVORABLE LOW LEVEL SHEAR. THERMODYNAMICALLY...SBCINH IS NEAR TEMPORAL RELATIVE MINIMUM ATTM OVER WW AREA...SUPPORTING GREATEST POTENTIAL FOR ADDITIONAL SFC-BASED DEVELOPMENT IN NEXT 1-2 HOURS AMIDST MLCAPES ESTIMATED IN 1500-2500 J/KG RANGE. ..EDWARDS.. 05/29/2007 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...FGF...BIS... 48949506 48009553 47119564 47129613 46609637 46669839 47659858 49009783
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 28, 7:40 PM CDT | Mesoscale Discussion | SPC | Burleigh, Dickey, Emmons, Foster, Grant, Kidder and 6 more | 2 hr |
| May 28, 10:47 PM CDT | Mesoscale Discussion | SPC | Dickey, LaMoure, Logan, McIntosh, Stutsman | 88 min |
| May 29, 1:14 AM CDT | Mesoscale Discussion | SPC | Emmons, Kidder, Logan, McIntosh, Stutsman | 2 hr |
Nearby
Mesoscale Discussions in Minnesota, 2007Mesoscale Discussions in North Dakota, 2007Every mesoscale discussion in 2007
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.