Alert archive / Iowa / Mesoscale Discussions in 2025

Mesoscale Discussion 178

March 14, 20254 states

The Storm Prediction Center issued this mesoscale discussion at Mar 14, 2025, 8:06 PM CDT for 4 states. It was in force for 114 min.

The area

The outline as issued.

The facts

Issued
Mar 14, 2025, 8:06 PM CDT (01:06 UTC)
Expired
Mar 14, 2025, 10:00 PM CDT
In force
114 min
Issued by
the Storm Prediction Center
Concerning
Severe thunderstorm watch 31...34...35
All 57 counties

Allamakee County, IA, Benton County, IA, Black Hawk County, IA, Bremer County, IA, Buchanan County, IA, Cedar County, IA, Cerro Gordo County, IA, Chickasaw County, IA, Clayton County, IA, Clinton County, IA, Delaware County, IA, Des Moines County, IA, Dubuque County, IA, Fayette County, IA, Floyd County, IA, Henry County, IA, Howard County, IA, Jackson County, IA, Johnson County, IA, Jones County, IA, Linn County, IA, Louisa County, IA, Mitchell County, IA, Muscatine County, IA, Scott County, IA, Winnebago County, IA, Winneshiek County, IA, Worth County, IA, Carroll County, IL, Hancock County, IL, Henderson County, IL, Henry County, IL, Jo Daviess County, IL, Knox County, IL, McDonough County, IL, Mercer County, IL, Rock Island County, IL, Warren County, IL, Whiteside County, IL, Blue Earth County, MN, Dodge County, MN, Faribault County, MN, Fillmore County, MN, Freeborn County, MN, Goodhue County, MN, Houston County, MN, Le Sueur County, MN, Mower County, MN, Olmsted County, MN, Rice County, MN, Steele County, MN, Wabasha County, MN, Waseca County, MN, Watonwan County, MN, Winona County, MN, Crawford County, WI, Grant County, WI

The radar

The Quad Cities radar (KDVN), 154 km from the middle of the area, began a volume at 01:06 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 00:00Z, 1.1 hours before the alert went out and 159 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.

Skew-T log-pSkew-T log-p diagram, Davenport, at 00:00Z on 2025-03-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 311 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Davenport, at 00:00Z on 2025-03-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 293 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
311 J/kg
Mixed-layer CIN
-249 J/kg
Mixed-layer LCL
2519 m above ground
0-6 km bulk shear
66 kt
0-1 km storm-relative helicity
293 m²/s²
0-3 km storm-relative helicity
345 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 14, 7:34 PM CDTTornado Watch PDSSPCAlexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more10 hr
Mar 14, 7:45 PM CDTMesoscale DiscussionSPCBond, Brown, Calhoun, Cass, Champaign, Christian and 46 more2 hr
Mar 14, 8:02 PM CDTTornado WatchSPCBond, Cass, Champaign, Christian, Clark, Clay and 38 more7 hr
Mar 14, 8:47 PM CDTMesoscale DiscussionSPCJersey, Macoupin, Madison, Monroe, Saint Clair88 min
Mar 14, 9:21 PM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, DeKalb, DuPage, Grundy and 21 more84 min
Mar 14, 10:20 PM CDTMesoscale DiscussionSPCAlexander115 min
Mar 14, 10:42 PM CDTMesoscale DiscussionSPCBond, Champaign, Christian, Clark, Clay, Clinton and 30 more63 min
Mar 14, 11:14 PM CDTMesoscale DiscussionSPCBoone, DeKalb, DuPage, Grundy, Jo Daviess, Kane and 10 more2 hr
Mar 14, 11:50 PM CDTMesoscale DiscussionSPCAlexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 10 more115 min
Mar 15, 7:47 AM CDTMesoscale DiscussionSPCBecker, Beltrami, Cass, Chippewa, Clearwater, Cottonwood and 19 more4 hr
Mar 14, 10:02 PM CDTSevere Thunderstorm WatchSPCColumbia, Dane, Dodge, Fond du Lac, Green, Green Lake and 14 more4 hr

Nearby

Mesoscale Discussions in Iowa, 2025Mesoscale Discussions in Minnesota, 2025Mesoscale Discussions in Illinois, 2025Every mesoscale discussion in 2025

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.