Alert archive / Michigan / Mesoscale Discussions in 2004
Mesoscale Discussion 2113
The Storm Prediction Center issued this mesoscale discussion at Aug 25, 2004, 6:01 PM EST for 10 counties in Indiana; 18 counties in Michigan; Defiance County, Paulding County, Williams County, Ohio. It was in force for 89 min.
The area
The outline as issued.
The facts
- Issued
- Aug 25, 2004, 6:01 PM EST (23:01 UTC)
- Expired
- Aug 25, 2004, 7:30 PM EST
- In force
- 89 min
- Issued by
- the Storm Prediction Center
All 31 counties
Allen County, IN, DeKalb County, IN, Elkhart County, IN, Huntington County, IN, Kosciusko County, IN, LaGrange County, IN, Noble County, IN, Steuben County, IN, Wabash County, IN, Whitley County, IN, Barry County, MI, Branch County, MI, Calhoun County, MI, Clinton County, MI, Eaton County, MI, Genesee County, MI, Gratiot County, MI, Hillsdale County, MI, Ingham County, MI, Ionia County, MI, Jackson County, MI, Kalamazoo County, MI, Lenawee County, MI, Livingston County, MI, Saginaw County, MI, Saint Joseph County, MI, Shiawassee County, MI, Washtenaw County, MI, Defiance County, OH, Paulding County, OH, Williams County, OH
The radar
The Northern Indiana radar (KIWX), 92 km from the middle of the area, began a volume at 23:01 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
Detroit, MI (KDTX), launched 12:00Z, 11.0 hours before the alert went out and 150 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
- 103 J/kg
- Mixed-layer CIN
- -82 J/kg
- Mixed-layer LCL
- 882 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- -52 m²/s²
- 0-3 km storm-relative helicity
- -6 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
331 ACUS11 KWNS 252303 SWOMCD SPC MCD 252301 MIZ000-OHZ000-INZ000-260030- MESOSCALE DISCUSSION 2113 NWS STORM PREDICTION CENTER NORMAN OK 0601 PM CDT WED AUG 25 2004 AREAS AFFECTED...CNTRL/ERN LOWER MI INTO NERN IND/NWRN OH CONCERNING...SEVERE THUNDERSTORM POTENTIAL VALID 252301Z - 260030Z POTENTIAL EXISTS FOR ISOLATED DAMAGING WIND GUSTS WITH ONGOING STORMS. WW NOT ANTICIPATED. AS OF 2245Z...REGIONAL RADAR MOSAIC INDICATED A LINE OF STRONG TO POTENTIALLY SEVERE STORMS WITH A COUPLE OF EMBEDDED BOWING STRUCTURES FROM CLINTON/EATON COUNTIES IN CNTRL LOWER MI SWWD TO WABASH/KOSCIUSKO COUNTIES IN N-CNTRL/NERN IND. DOWNSTREAM AIRMASS REMAINS WARM/MOIST AND MODERATELY UNSTABLE EARLY THIS EVENING WITH MLCAPES OF 1000-1500 J/KG. GIVEN THE MODESTLY STRONG SWLY FLOW OBSERVED ON THE GRAND RAPIDS MI/N WEBSTER IND VWPS...POTENTIAL FOR MAINLY A FEW DAMAGING WIND GUSTS WILL PERSIST FOR THE NEXT COUPLE OF HOURS...ESPECIALLY WITH ANY BOWING STRUCTURES. THIS THREAT IS EXPECTED TO REMAIN RATHER ISOLATED AND A WW IS NOT ANTICIPATED. ..MEAD.. 08/25/2004 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...DTX...IWX...GRR... 41048609 42478553 43178502 43488425 43448346 42568346 41178449 40718530 40668582
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 25, 3:38 PM EST | Mesoscale Discussion | SPC | Adams, Allen, Blackford, Carroll, Cass, Clinton and 24 more | 2 hr |
Nearby
Mesoscale Discussions in Michigan, 2004Mesoscale Discussions in Indiana, 2004Mesoscale Discussions in Ohio, 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.