Alert archive / Iowa / Mesoscale Discussions in 2019
Mesoscale Discussion 895
The Storm Prediction Center issued this mesoscale discussion at May 29, 2019, 6:17 PM CDT for Mercer County, Rock Island County, Illinois; 25 counties in Iowa. It was in force for 118 min.
The area
The outline as issued.
The facts
- Issued
- May 29, 2019, 6:17 PM CDT (23:17 UTC)
- Expired
- May 29, 2019, 8:15 PM CDT
- In force
- 118 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 20%
All 27 counties
Benton County, IA, Black Hawk County, IA, Buchanan County, IA, Butler County, IA, Cedar County, IA, Franklin County, IA, Grundy County, IA, Hamilton County, IA, Hardin County, IA, Henry County, IA, Iowa County, IA, Johnson County, IA, Jones County, IA, Keokuk County, IA, Linn County, IA, Louisa County, IA, Marshall County, IA, Muscatine County, IA, Poweshiek County, IA, Scott County, IA, Story County, IA, Tama County, IA, Washington County, IA, Webster County, IA, Wright County, IA, Mercer County, IL, Rock Island County, IL
The radar
The Des Moines radar (KDMX), 130 km from the middle of the area, began a volume at 23:18 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
Davenport, (KDVN), launched 12:00Z, 11.3 hours before the alert went out and 139 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
- 630 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 142 m²/s²
- 0-3 km storm-relative helicity
- 90 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 28, 8:48 PM CDT | Severe Thunderstorm Watch | SPC | Ford, Grundy, Iroquois, Kankakee, LaSalle, Livingston | 4 hr |
| May 29, 9:06 AM CDT | Mesoscale Discussion | SPC | Hardin, Massac, Pope | 114 min |
| May 29, 3:48 PM CDT | Mesoscale Discussion | SPC | Alexander, Bond, Calhoun, Christian, Clark, Clay and 33 more | 87 min |
| May 29, 4:34 PM CDT | Severe Thunderstorm Watch | SPC | Bond, Calhoun, Clinton, Fayette, Greene, Jersey and 8 more | 3 hr |
| May 28, 9:36 PM CDT | Severe Thunderstorm Watch | SPC | Decatur, Ringgold, Taylor, Wayne | 4 hr |
| May 28, 9:52 PM CDT | Mesoscale Discussion | SPC | Fremont, Page, Ringgold, Taylor | 53 min |
| May 29, 5:24 PM CDT | Mesoscale Discussion | SPC | Buena Vista, Calhoun, Cherokee, Clay, Humboldt, Ida and 3 more | 2 hr |
Nearby
Mesoscale Discussions in Iowa, 2019Mesoscale Discussions in Illinois, 2019Every mesoscale discussion in 2019
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.