Alert archive / Minnesota / Mesoscale Discussions in 2003
Mesoscale Discussion 1639
The Storm Prediction Center issued this mesoscale discussion at Jul 5, 2003, 8:04 PM CDT for 8 counties in Iowa; 15 counties in Minnesota; 9 counties in South Dakota. It was in force for 86 min.
The area
The outline as issued.
The facts
- Issued
- Jul 5, 2003, 8:04 PM CDT (01:04 UTC)
- Expired
- Jul 5, 2003, 9:30 PM CDT
- In force
- 86 min
- Issued by
- the Storm Prediction Center
All 32 counties
Clay County, IA, Dickinson County, IA, Emmet County, IA, Lyon County, IA, O'Brien County, IA, Osceola County, IA, Palo Alto County, IA, Sioux County, IA, Brown County, MN, Chippewa County, MN, Cottonwood County, MN, Jackson County, MN, Lac qui Parle County, MN, Lincoln County, MN, Lyon County, MN, Martin County, MN, Murray County, MN, Nobles County, MN, Pipestone County, MN, Redwood County, MN, Rock County, MN, Watonwan County, MN, Yellow Medicine County, MN, Brookings County, SD, Clark County, SD, Codington County, SD, Deuel County, SD, Grant County, SD, Hamlin County, SD, Kingsbury County, SD, Lake County, SD, Moody County, SD
The radar
The Sioux Falls radar (KFSD), 57 km from the middle of the area, began a volume at 01:08 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
Aberdeen, SD (KABR), launched 00:00Z, 1.1 hours before the alert went out and 200 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
- 797 J/kg
- Mixed-layer CIN
- -119 J/kg
- Mixed-layer LCL
- 2253 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 63 m²/s²
- 0-3 km storm-relative helicity
- 91 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.9
The text
As transmitted, in the capitals the NWS used until 2016.
362 ACUS11 KWNS 060105 SWOMCD SPC MCD 060104 MNZ000-IAZ000-SDZ000-060230- MESOSCALE DISCUSSION 1639 NWS STORM PREDICTION CENTER NORMAN OK 0804 PM CDT SAT JUL 05 2003 AREAS AFFECTED...ECNTRL SD INTO SWRN MN AND NWRN IA CONCERNING...SEVERE THUNDERSTORM POTENTIAL VALID 060104Z - 060230Z RADAR LOOPS SHOW THAT A MCV IS EVOLVING OVER SCNTRL SD AND WILL TRANSLATE INTO ECNTRL/SERN SD IN THE NEXT COUPLE OF HOURS. IT IS UNCERTAIN HOW THIS FEATURE WILL AFFECT DOWNSTREAM CONVECTIVE POTENTIAL. PLUSES FOR POSSIBLE SEVERE INCLUDE THE FACT THAT AIR MASS DOWNSTREAM EXPERIENCED MORE SUNSHINE TODAY...RESULTING IN AN INSTABILITY AXIS POINTING NWD ACROSS ERN SD AND SWRN MN. UPSTREAM PROFILERS ALSO SHOW FAIRLY MODEST MIDLEVEL FLOW REGIME ASSOCIATED WITH SYNOPTIC SCALE MIDLEVEL IMPULSE MIGRATING THROUGH THE NEB/SD REGION. THIS IS AUGMENTING DEEP LAYER SHEAR SUFFICIENT FOR SUPERCELLS. IF TSTMS APPEAR TO BE INTENSIFYING ACROSS ECNTRL/SERN SD IN THE NEXT HOUR OR SO...A NEW WW WILL PROBABLY BE NEEDED DOWNSTREAM OF WS 647 AND NORTH OF WT 651. ..RACY.. 07/06/2003 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...MPX...DMX...FSD...ABR... 42839606 43849684 44359808 44979792 45379600 44459472 43119428
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 5, 7:20 PM CDT | Tornado Watch | SPC | Fremont, Harrison, Mills, Monona, Page, Pottawattamie and 1 more | 6 hr |
| Jul 5, 7:51 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Audubon, Cass, Clarke and 30 more | 54 min |
| Jul 5, 10:46 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Audubon, Cass, Clarke and 28 more | 59 min |
| Jul 5, 10:57 PM CDT | Mesoscale Discussion | SPC | Fremont, Harrison, Mills, Monona, Montgomery, Page and 1 more | 63 min |
| Jul 5, 11:50 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Adams, Appanoose, Audubon, Boone, Carroll and 36 more | 5 hr |
| Jul 6, 2:26 AM CDT | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Benton, Black Hawk, Boone and 49 more | 94 min |
| Jul 6, 4:33 AM CDT | Mesoscale Discussion | SPC | Adair, Audubon, Carroll, Cass, Clarke, Crawford and 12 more | 87 min |
| Jul 6, 5:17 AM CDT | Mesoscale Discussion | SPC | Allamakee, Cedar, Clinton, Dubuque, Jackson, Jones | 118 min |
| Jul 6, 9:48 AM CDT | Mesoscale Discussion | SPC | Clinton, Des Moines, Jackson, Lee, Louisa, Muscatine and 1 more | 117 min |
| Jul 6, 11:45 AM CDT | Tornado Watch | SPC | Cedar, Clayton, Clinton, Delaware, Des Moines, Dubuque and 6 more | 6 hr |
| Jul 6, 5:28 PM CDT | Mesoscale Discussion | SPC | Clinton, Dubuque, Jackson, Scott | 62 min |
| Jul 6, 4:08 AM CDT | Mesoscale Discussion | SPC | Beltrami, Clearwater, Koochiching, Pennington, Polk, Red Lake | 2 hr |
| Jul 6, 12:56 PM CDT | Mesoscale Discussion | SPC | Aitkin, Carlton, Itasca, Koochiching, Lake of the Woods, Saint Louis | 109 min |
| Jul 6, 1:40 PM CDT | Mesoscale Discussion | SPC | Becker, Beltrami, Clay, Clearwater, Mahnomen, Marshall and 4 more | 3 hr |
| Jul 6, 2:20 PM CDT | Tornado Watch | SPC | Aitkin, Becker, Beltrami, Cass, Clay, Clearwater and 11 more | 8 hr |
| Jul 6, 4:56 PM CDT | Mesoscale Discussion | SPC | Benton, Big Stone, Chippewa, Kanabec, Kandiyohi, Lac qui Parle and 15 more | 2 hr |
| Jul 6, 5:29 PM CDT | Mesoscale Discussion | SPC | Aitkin, Becker, Beltrami, Cass, Clay, Clearwater and 11 more | 2 hr |
| Jul 6, 6:54 PM CDT | Mesoscale Discussion | SPC | Anoka, Benton, Carlton, Chisago, Cook, Douglas and 14 more | 4 hr |
| Jul 5, 7:23 PM CDT | Mesoscale Discussion | SPC | Aurora, Beadle, Brown, Brule, Buffalo, Campbell and 19 more | 97 min |
Nearby
Mesoscale Discussions in Minnesota, 2003Mesoscale Discussions in South Dakota, 2003Mesoscale Discussions in Iowa, 2003Every mesoscale discussion in 2003
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.