Alert archive / Minnesota / Mesoscale Discussions in 2004
Mesoscale Discussion 1925
The Storm Prediction Center issued this mesoscale discussion at Aug 8, 2004, 4:02 PM CDT for 17 counties in Minnesota; 13 counties in North Dakota. It was in force for 88 min.
The area
The outline as issued.
The facts
- Issued
- Aug 8, 2004, 4:02 PM CDT (21:02 UTC)
- Expired
- Aug 8, 2004, 5:30 PM CDT
- In force
- 88 min
- Issued by
- the Storm Prediction Center
All 30 counties
Becker County, MN, Beltrami County, MN, Cass County, MN, Clay County, MN, Clearwater County, MN, Hubbard County, MN, Kittson County, MN, Mahnomen County, MN, Marshall County, MN, Norman County, MN, Otter Tail County, MN, Pennington County, MN, Polk County, MN, Red Lake County, MN, Roseau County, MN, Wadena County, MN, Wilkin County, MN, Barnes County, ND, Cass County, ND, Cavalier County, ND, Eddy County, ND, Foster County, ND, Grand Forks County, ND, Griggs County, ND, Nelson County, ND, Pembina County, ND, Ramsey County, ND, Steele County, ND, Traill County, ND, Walsh County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 27 km from the middle of the area, began a volume at 21:03 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
Bismarck Municip, ND (KBIS), launched 12:00Z, 9.0 hours before the alert went out and 275 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
- 17 J/kg
- Mixed-layer CIN
- -284 J/kg
- Mixed-layer LCL
- 1229 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 26 m²/s²
- 0-3 km storm-relative helicity
- 40 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
542 ACUS11 KWNS 082103 SWOMCD SPC MCD 082102 MNZ000-NDZ000-082230- MESOSCALE DISCUSSION 1925 NWS STORM PREDICTION CENTER NORMAN OK 0402 PM CDT SUN AUG 08 2004 AREAS AFFECTED...ERN ND...NWRN MN CONCERNING...SEVERE THUNDERSTORM WATCH 719... VALID 082102Z - 082230Z STORMS APPEAR TO BE GETTING BETTER ORGANIZED OVER THE WW AREA BENEATH UPPER LOW...WITHIN SURFACE CONFLUENT ZONES. LINE OF CONVECTION NOW E OF RED RIVER WILL EVENTUALLY MOVE EWD OUT OF WW...THUS ADDITIONAL WW OR REPLACEMENT WATCH MIGHT BE NEEDED INTO NWRN MN. OBJECTIVE ANALYSIS SHOWS 0-3 KM CAPE VALUES IN EXCESS OF 100 J/KG OVER SERN ND AND NWRN MN. THIS IN COMBINATION WITH STRONG VORTICITY WITHIN THE COLUMN AND LOW LCL HEIGHTS MAY ALLOW FOR A COUPLE BRIEF TORNADOES. OTHERWISE...THREAT FOR HAIL DUE TO COLD AIR ALOFT WILL CONTINUE TO BE THE MAIN SEVERE THREAT. ..JEWELL.. 08/08/2004 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...DLH...MPX...FGF...BIS... 46149625 46769839 47119906 48279909 49009926 49009501 46049398
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 8, 12:17 PM CDT | Mesoscale Discussion | SPC | Anoka, Blue Earth, Carver, Dakota, Dodge, Faribault and 19 more | 58 min |
| Aug 8, 12:37 PM CDT | Mesoscale Discussion | SPC | Becker, Clay, Douglas, Grant, Kittson, Mahnomen and 8 more | 83 min |
| Aug 8, 12:55 PM CDT | Severe Thunderstorm Watch | SPC | Becker, Clay, Kittson, Mahnomen, Marshall, Norman and 5 more | 5 hr |
| Aug 8, 4:35 PM CDT | Severe Thunderstorm Watch | SPC | Becker, Beltrami, Cass, Clay, Clearwater, Crow Wing and 17 more | 5 hr |
| Aug 8, 5:03 PM CDT | Mesoscale Discussion | SPC | Anoka, Benton, Blue Earth, Carver, Chisago, Dakota and 31 more | 117 min |
| Aug 8, 5:20 PM CDT | Severe Thunderstorm Watch | SPC | Anoka, Benton, Brown, Carver, Chisago, Dakota and 21 more | 7 hr |
Nearby
Mesoscale Discussions in Minnesota, 2004Mesoscale Discussions in North Dakota, 2004Every mesoscale discussion in 2004
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.