Alert archive / Iowa / Mesoscale Discussions in 2005
Mesoscale Discussion 1850
The Storm Prediction Center issued this mesoscale discussion at Jul 24, 2005, 6:26 PM CDT for 11 counties in Iowa; 5 counties in Wisconsin. It was in force for 64 min.
The area
The outline as issued.
The facts
- Issued
- Jul 24, 2005, 6:26 PM CDT (23:26 UTC)
- Expired
- Jul 24, 2005, 7:30 PM CDT
- In force
- 64 min
- Issued by
- the Storm Prediction Center
Counties Allamakee County, IA, Black Hawk County, IA, Bremer County, IA, Buchanan County, IA, Chickasaw County, IA, Clayton County, IA, Delaware County, IA, Dubuque County, IA, Fayette County, IA, Howard County, IA, Winneshiek County, IA, Crawford County, WI, Grant County, WI, Iowa County, WI, Lafayette County, WI, Richland County, WI
The radar
The La Crosse radar (KARX), 97 km from the middle of the area, began a volume at 23:25 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
Green Bay/Straub, WI (KGRB), launched 12:00Z, 11.4 hours before the alert went out and 298 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
- 1651 J/kg
- Mixed-layer CIN
- -111 J/kg
- Mixed-layer LCL
- 589 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 245 m²/s²
- 0-3 km storm-relative helicity
- 304 m²/s²
- Significant tornado parameter
- 1.6
- Supercell composite
- 6.5
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 24, 10:33 AM CDT | Mesoscale Discussion | SPC | Bremer, Buena Vista, Butler, Cerro Gordo, Cherokee, Chickasaw and 23 more | 117 min |
| Jul 24, 4:10 PM CDT | Mesoscale Discussion | SPC | Audubon, Black Hawk, Boone, Bremer, Buchanan, Buena Vista and 36 more | 95 min |
| Jul 24, 4:50 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Buena Vista, Butler, Calhoun, Carroll, Cerro Gordo and 31 more | 5 hr |
| Jul 23, 11:02 PM CDT | Mesoscale Discussion | SPC | Ashland, Bayfield, Brown, Burnett, Calumet, Door and 25 more | 118 min |
| Jul 23, 11:35 PM CDT | Severe Thunderstorm Watch | SPC | Ashland, Barron, Bayfield, Chippewa, Clark, Door and 19 more | 6 hr |
| Jul 24, 1:57 AM CDT | Mesoscale Discussion | SPC | Ashland, Bayfield, Door, Florence, Forest, Iron and 4 more | 2 hr |
| Jul 24, 4:59 AM CDT | Mesoscale Discussion | SPC | Door, Florence, Forest, Kewaunee, Marinette, Oconto | 91 min |
Nearby
Mesoscale Discussions in Iowa, 2005Mesoscale Discussions in Wisconsin, 2005Every mesoscale discussion in 2005
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.