Alert archive / Iowa / Severe Thunderstorm Watches in 2006
Severe Thunderstorm Watch 76
The Storm Prediction Center issued this severe thunderstorm watch at Mar 12, 2006, 7:28 PM CST for 5 counties in Illinois; 27 counties in Iowa. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 12, 2006, 7:28 PM CST (01:28 UTC)
- Expired
- Mar 13, 2006, 2:00 AM CST
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
All 32 counties
Appanoose County, IA, Benton County, IA, Buchanan County, IA, Cedar County, IA, Clinton County, IA, Davis County, IA, Delaware County, IA, Dubuque County, IA, Iowa County, IA, Jackson County, IA, Jasper County, IA, Johnson County, IA, Jones County, IA, Keokuk County, IA, Linn County, IA, Lucas County, IA, Mahaska County, IA, Marion County, IA, Marshall County, IA, Monroe County, IA, Muscatine County, IA, Poweshiek County, IA, Scott County, IA, Tama County, IA, Wapello County, IA, Washington County, IA, Wayne County, IA, Carroll County, IL, Jo Daviess County, IL, Rock Island County, IL, Stephenson County, IL, Whiteside County, IL
The radar
The Quad Cities radar (KDVN), 115 km from the middle of the area, began a volume at 01:31 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.
Warnings issued inside it
17 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 12, 7:53 PM CST | Severe Thunderstorm Warning | DMX | Wapello | 52 min |
| Mar 12, 8:00 PM CST | Severe Thunderstorm Warning | DVN | Henry, Rock Island | 17 min |
| Mar 12, 8:08 PM CST | Severe Thunderstorm Warning | DMX | Appanoose, Davis | 52 min |
| Mar 12, 8:08 PM CST | Severe Thunderstorm Warning | DVN | Muscatine | 32 min |
| Mar 12, 8:13 PM CST | Severe Thunderstorm Warning | DVN | Whiteside | 47 min |
| Mar 12, 8:16 PM CST | Severe Thunderstorm Warning | DVN | Washington | 44 min |
| Mar 12, 8:21 PM CST | Tornado Warning | DMX | Davis | 24 min |
| Mar 12, 8:26 PM CST | Severe Thunderstorm Warning | DVN | Scott | 49 min |
| Mar 12, 8:30 PM CST | Tornado Warning | DVN | Whiteside | 45 min |
| Mar 12, 8:44 PM CST | Severe Thunderstorm Warning | DVN | Cedar | 31 min |
| Mar 12, 9:12 PM CST | Severe Thunderstorm Warning | DVN | Clinton | 24 min |
| Mar 12, 9:19 PM CST | Flash Flood Warning | DVN | Rock Island | 4 hr |
| Mar 12, 9:25 PM CST | Severe Thunderstorm Warning | DVN | Carroll, Whiteside | 65 min |
| Mar 12, 11:20 PM CST | Severe Thunderstorm Warning | DMX | Wapello | 19 min |
| Mar 13, 12:04 AM CST | Severe Thunderstorm Warning | DMX | Marshall | 26 min |
| Mar 13, 1:06 AM CST | Severe Thunderstorm Warning | DVN | Buchanan | 13 min |
| Mar 13, 1:59 AM CST | Severe Thunderstorm Warning | DVN | Dubuque | 28 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 1.5 hours before the alert went out and 122 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
- 653 m above ground
- 0-6 km bulk shear
- 86 kt
- 0-1 km storm-relative helicity
- 756 m²/s²
- 0-3 km storm-relative helicity
- 1064 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 5.3
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 12, 6:28 PM CST | Mesoscale Discussion | SPC | Adams, Bond, Brown, Calhoun, Cass, Christian and 17 more | 92 min |
| Mar 12, 7:15 PM CST | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, DeKalb, DuPage, Grundy and 24 more | 90 min |
| Mar 12, 8:00 PM CST | Mesoscale Discussion | SPC | Adams, Bond, Brown, Calhoun, Cass, Champaign and 47 more | 90 min |
| Mar 12, 8:42 PM CST | Tornado Watch | SPC | Adams, Bond, Boone, Brown, Bureau, Calhoun and 58 more | 7 hr |
| Mar 12, 11:30 PM CST | Mesoscale Discussion | SPC | Adams, Bond, Brown, Calhoun, Cass, Champaign and 41 more | 2 hr |
| Mar 12, 11:52 PM CST | Mesoscale Discussion | SPC | Carroll | 83 min |
| Mar 13, 12:35 AM CST | Mesoscale Discussion | SPC | Alexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 11 more | 85 min |
| Mar 13, 1:06 AM CST | Tornado Watch | SPC | Alexander, Clinton, Edwards, Franklin, Gallatin, Hamilton and 19 more | 6 hr |
| Mar 13, 3:19 AM CST | Mesoscale Discussion | SPC | Champaign, Clark, Clay, Coles, Crawford, Cumberland and 9 more | 86 min |
| Mar 13, 3:52 AM CST | Tornado Watch | SPC | Bond, Champaign, Clark, Clay, Coles, Crawford and 19 more | 7 hr |
| Mar 13, 6:08 AM CST | Mesoscale Discussion | SPC | Alexander, Edwards, Gallatin, Hamilton, Hardin, Johnson and 7 more | 97 min |
| Mar 13, 1:47 AM CST | Mesoscale Discussion | SPC | Adams, Calumet, Columbia, Crawford, Dane, Dodge and 21 more | 58 min |
| Mar 13, 2:06 AM CST | Severe Thunderstorm Watch | SPC | Columbia, Crawford, Dane, Dodge, Fond du Lac, Grant and 17 more | 2 hr |
| Mar 13, 7:57 AM CST | Mesoscale Discussion | SPC | Ashland, Barron, Buffalo, Chippewa, Clark, Dunn and 18 more | 5 hr |
Nearby
Severe Thunderstorm Watches in Iowa, 2006Severe Thunderstorm Watches in Illinois, 2006Every severe thunderstorm watch in 2006
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.