Alert archive / Iowa / Mesoscale Discussions in 2018
Mesoscale Discussion 48
The Storm Prediction Center issued this mesoscale discussion at Feb 5, 2018, 11:36 AM CST for 4 counties in Illinois; 53 counties in Iowa. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Feb 5, 2018, 11:36 AM CST (17:36 UTC)
- Expired
- Feb 5, 2018, 5:30 PM CST
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 57 counties
Adair County, IA, Adams County, IA, Appanoose County, IA, Audubon County, IA, Benton County, IA, Black Hawk County, IA, Boone County, IA, Buchanan County, IA, Carroll County, IA, Cass County, IA, Cedar County, IA, Clarke County, IA, Crawford County, IA, Dallas County, IA, Davis County, IA, Des Moines County, IA, Greene County, IA, Grundy County, IA, Guthrie County, IA, Hamilton County, IA, Hardin County, IA, Henry County, IA, Iowa County, IA, Jasper County, IA, Jefferson County, IA, Johnson County, IA, Jones County, IA, Keokuk County, IA, Lee County, IA, Linn County, IA, Louisa County, IA, Lucas County, IA, Madison County, IA, Mahaska County, IA, Marion County, IA, Marshall County, IA, Mills County, IA, Monroe County, IA, Montgomery County, IA, Muscatine County, IA, Polk County, IA, Pottawattamie County, IA, Poweshiek County, IA, Scott County, IA, Shelby County, IA, Story County, IA, Tama County, IA, Union County, IA, Van Buren County, IA, Wapello County, IA, Warren County, IA, Washington County, IA, Wayne County, IA, Henderson County, IL, Mercer County, IL, Rock Island County, IL, Warren County, IL
The radar
The Des Moines radar (KDMX), 60 km from the middle of the area, began a volume at 17:39 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, 5.6 hours before the alert went out and 217 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
- 1504 m above ground
- 0-6 km bulk shear
- 79 kt
- 0-1 km storm-relative helicity
- 60 m²/s²
- 0-3 km storm-relative helicity
- 227 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 |
|---|---|---|---|---|
| Feb 5, 4:57 PM CST | Mesoscale Discussion | SPC | Bureau, DeWitt, Ford, Fulton, Grundy, Hancock and 25 more | 4 hr |
Nearby
Mesoscale Discussions in Iowa, 2018Mesoscale Discussions in Illinois, 2018Every mesoscale discussion in 2018
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.