Alert archive / Iowa / Tornado Watches in 2014
Tornado Watch 373
The Storm Prediction Center issued this tornado watch at Jun 30, 2014, 9:38 AM CDT for 52 counties in Iowa; 28 counties in Nebraska. It was in force for 10 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 30, 2014, 9:38 AM CDT (14:38 UTC)
- Expired
- Jun 30, 2014, 8:00 PM CDT
- In force
- 10 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 3 in
- Strongest gust expected
- 70 kt
All 80 counties
Adair County, IA, Adams County, IA, Appanoose County, IA, Audubon County, IA, Black Hawk County, IA, Boone County, IA, Bremer County, IA, Butler County, IA, Calhoun County, IA, Carroll County, IA, Cass County, IA, Clarke County, IA, Crawford County, IA, Dallas County, IA, Davis County, IA, Decatur County, IA, Franklin County, IA, Fremont County, IA, Greene County, IA, Grundy County, IA, Guthrie County, IA, Hamilton County, IA, Hardin County, IA, Harrison County, IA, Humboldt County, IA, Jasper County, IA, Lucas County, IA, Madison County, IA, Mahaska County, IA, Marion County, IA, Marshall County, IA, Mills County, IA, Monona County, IA, Monroe County, IA, Montgomery County, IA, Page County, IA, Pocahontas County, IA, Polk County, IA, Pottawattamie County, IA, Poweshiek County, IA, Ringgold County, IA, Sac County, IA, Shelby County, IA, Story County, IA, Tama County, IA, Taylor County, IA, Union County, IA, Wapello County, IA, Warren County, IA, Wayne County, IA, Webster County, IA, Wright County, IA, Antelope County, NE, Boone County, NE, Burt County, NE, Butler County, NE, Cass County, NE, Colfax County, NE, Cuming County, NE, Dodge County, NE, Douglas County, NE, Greeley County, NE, Hamilton County, NE, Howard County, NE, Lancaster County, NE, Madison County, NE, Merrick County, NE, Nance County, NE, Otoe County, NE, Pierce County, NE, Platte County, NE, Polk County, NE, Sarpy County, NE, Saunders County, NE, Seward County, NE, Stanton County, NE, Thurston County, NE, Washington County, NE, Wayne County, NE, York County, NE
The radar
The Omaha radar (KOAX), 59 km from the middle of the area, began a volume at 14:37 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.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 70%
- One or more EF2 to EF5 tornadoes
- 40%
- Ten or more severe wind reports
- 90%
- One or more gusts of 65 knots or more
- 40%
- Ten or more severe hail reports
- 95%
- One or more hailstones of 2 inches or more
- 40%
- Six or more combined severe hail and wind reports
- 95%
Warnings issued inside it
56 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 30, 9:39 AM CDT | Severe Thunderstorm Warning | OAX | Shelby | 23 min |
| Jun 30, 9:57 AM CDT | Severe Thunderstorm Warning | OAX | Colfax, Cuming, Madison, Platte, Stanton, Wayne | 48 min |
| Jun 30, 9:58 AM CDT | Severe Thunderstorm Warning | OAX | Monona | 32 min |
| Jun 30, 10:02 AM CDT | Severe Thunderstorm Warning | OAX | Antelope, Madison, Pierce | 28 min |
| Jun 30, 10:09 AM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Webster | 51 min |
| Jun 30, 10:13 AM CDT | Severe Thunderstorm Warning | DMX | Audubon, Dallas, Guthrie | 42 min |
| Jun 30, 10:13 AM CDT | Severe Thunderstorm Warning | DMX | Crawford, Sac | 47 min |
| Jun 30, 10:16 AM CDT | Severe Thunderstorm Warning | OAX | Burt, Cuming, Thurston, Wayne | 44 min |
| Jun 30, 10:37 AM CDT | Severe Thunderstorm Warning | OAX | Harrison, Monona | 53 min |
| Jun 30, 10:37 AM CDT | Flash Flood Warning | OAX | Burt, Cuming, Stanton, Thurston, Wayne | 3 hr |
| Jun 30, 10:50 AM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Humboldt, Pocahontas, Webster | 40 min |
| Jun 30, 10:51 AM CDT | Severe Thunderstorm Warning | OAX | Pierce, Wayne | 39 min |
| Jun 30, 10:55 AM CDT | Severe Thunderstorm Warning | DMX | Hamilton, Webster, Wright | 38 min |
| Jun 30, 10:59 AM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Carroll, Crawford, Greene, Sac | 46 min |
| Jun 30, 11:04 AM CDT | Flash Flood Warning | OAX | Harrison, Monona | 3 hr |
| Jun 30, 11:06 AM CDT | Severe Thunderstorm Warning | DMX | Carroll, Crawford, Sac | 54 min |
| Jun 30, 11:10 AM CDT | Severe Thunderstorm Warning | OAX | Harrison, Monona, Shelby | 65 min |
| Jun 30, 11:24 AM CDT | Severe Thunderstorm Warning | DMX | Boone, Greene | 51 min |
| Jun 30, 11:24 AM CDT | Severe Thunderstorm Warning | OAX | Thurston, Wayne | 51 min |
| Jun 30, 11:36 AM CDT | Severe Thunderstorm Warning | DMX | Boone, Calhoun, Carroll, Greene, Hamilton, Webster | 39 min |
| Jun 30, 11:36 AM CDT | Severe Thunderstorm Warning | OAX | Shelby | 39 min |
| Jun 30, 11:42 AM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Carroll, Crawford, Greene, Pocahontas, Sac | 48 min |
| Jun 30, 11:48 AM CDT | Severe Thunderstorm Warning | DMX | Audubon, Guthrie | 42 min |
| Jun 30, 11:50 AM CDT | Severe Thunderstorm Warning | DMX | Franklin, Wright | 24 min |
| Jun 30, 11:50 AM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 25 min |
| Jun 30, 11:56 AM CDT | Flash Flood Warning | OAX | Harrison, Pottawattamie, Shelby | 3 hr |
| Jun 30, 12:04 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Audubon, Cass, Guthrie | 41 min |
| Jun 30, 12:12 PM CDT | Flash Flood Warning | DMX | Audubon | 6 hr |
| Jun 30, 12:12 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Hamilton, Hardin, Story, Webster | 48 min |
| Jun 30, 12:37 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Dallas, Guthrie, Madison | 53 min |
| Jun 30, 12:44 PM CDT | Tornado Warning | DMX | Adair, Dallas, Guthrie, Madison | 31 min |
| Jun 30, 12:49 PM CDT | Flash Flood Warning | DMX | Boone, Hamilton, Story, Webster | 6 hr |
| Jun 30, 12:56 PM CDT | Tornado Warning | DMX | Marshall, Story | 34 min |
| Jun 30, 12:59 PM CDT | Severe Thunderstorm Warning | DMX | Grundy, Hamilton, Hardin, Marshall, Story | 46 min |
| Jun 30, 1:10 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Polk | 50 min |
| Jun 30, 1:16 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Madison, Marion, Polk, Warren | 59 min |
| Jun 30, 1:25 PM CDT | Flash Flood Warning | DMX | Dallas, Polk | 6 hr |
| Jun 30, 1:29 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Grundy, Hardin, Marshall, Tama | 46 min |
| Jun 30, 1:38 PM CDT | Flash Flood Warning | DMX | Grundy, Hardin, Marshall, Story, Tama | 6 hr |
| Jun 30, 1:46 PM CDT | Flash Flood Warning | DMX | Adair, Dallas, Guthrie | 6 hr |
| Jun 30, 1:46 PM CDT | Tornado Warning | DMX | Marion, Warren | 29 min |
| Jun 30, 1:50 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Mahaska, Marion, Poweshiek | 40 min |
| Jun 30, 2:00 PM CDT | Flash Flood Warning | DMX | Black Hawk, Tama | 6 hr |
| Jun 30, 2:00 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marshall, Poweshiek, Tama | 45 min |
| Jun 30, 2:03 PM CDT | Tornado Warning | DMX | Black Hawk, Tama | 27 min |
| Jun 30, 2:12 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Mahaska, Marion, Poweshiek, Warren | 63 min |
| Jun 30, 2:12 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Tama | 34 min |
| Jun 30, 2:17 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marion, Warren | 28 min |
| Jun 30, 2:24 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Bremer | 21 min |
| Jun 30, 2:30 PM CDT | Tornado Warning | DMX | Mahaska, Poweshiek | 30 min |
| Jun 30, 2:31 PM CDT | Flash Flood Warning | DMX | Jasper, Marion, Polk, Warren | 6 hr |
| Jun 30, 2:53 PM CDT | Flash Flood Warning | DMX | Jasper, Marshall, Poweshiek, Tama | 6 hr |
| Jun 30, 3:08 PM CDT | Flash Flood Warning | DMX | Black Hawk, Bremer | 6 hr |
| Jun 30, 3:12 PM CDT | Flash Flood Warning | DMX | Humboldt, Pocahontas | 6 hr |
| Jun 30, 5:56 PM CDT | Severe Thunderstorm Warning | DMX | Poweshiek, Tama | 34 min |
| Jun 30, 6:58 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska, Poweshiek | 36 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
Omaha, NE (KOAX), launched 12:00Z, 2.6 hours before the alert went out and 60 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
- 4563 J/kg
- Mixed-layer CIN
- -72 J/kg
- Mixed-layer LCL
- 903 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 162 m²/s²
- Significant tornado parameter
- 2.8
- Supercell composite
- 12.1
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 7:50 PM CDT | Mesoscale Discussion | SPC | Buchanan, Clayton, Delaware, Dubuque, Fayette, Jackson and 2 more | 85 min |
| Jun 29, 8:15 PM CDT | Severe Thunderstorm Watch | SPC | Allamakee, Benton, Buchanan, Cedar, Chickasaw, Clayton and 14 more | 7 hr |
| Jun 29, 9:43 PM CDT | Mesoscale Discussion | SPC | Allamakee, Buchanan, Cedar, Clayton, Clinton, Delaware and 6 more | 92 min |
| Jun 29, 10:10 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Clarke, Dallas, Decatur and 16 more | 65 min |
| Jun 29, 10:54 PM CDT | Tornado Watch | SPC | Clinton, Jackson | 5 hr |
| Jun 30, 3:32 AM CDT | Mesoscale Discussion | SPC | Audubon, Boone, Calhoun, Carroll, Cherokee, Crawford and 15 more | 58 min |
| Jun 30, 4:06 AM CDT | Severe Thunderstorm Watch | SPC | Adair, Adams, Appanoose, Audubon, Boone, Calhoun and 42 more | 10 hr |
| Jun 30, 7:16 AM CDT | Mesoscale Discussion | SPC | Audubon, Benton, Black Hawk, Boone, Bremer, Buchanan and 36 more | 89 min |
| Jun 30, 9:08 AM CDT | Mesoscale Discussion | SPC | Adair, Adams, Cass, Harrison, Mills, Montgomery and 2 more | 67 min |
| Jun 30, 10:48 AM CDT | Mesoscale Discussion | SPC | Audubon, Calhoun, Carroll, Crawford, Greene, Guthrie and 7 more | 87 min |
| Jun 30, 1:27 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Audubon, Benton, Black Hawk and 60 more | 93 min |
| Jun 30, 2:03 PM CDT | Tornado Watch | SPC | Benton, Buchanan, Cedar, Clayton, Clinton, Delaware and 17 more | 5 hr |
| Jun 30, 3:17 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Audubon, Boone, Carroll and 28 more | 58 min |
| Jun 30, 3:25 PM CDT | Mesoscale Discussion | SPC | Allamakee, Benton, Buchanan, Cedar, Clayton, Clinton and 18 more | 35 min |
| Jun 30, 6:28 PM CDT | Mesoscale Discussion | SPC | Benton, Cedar, Clinton, Dubuque, Iowa, Jackson and 10 more | 92 min |
| Jun 29, 11:53 PM CDT | Mesoscale Discussion | SPC | Adams, Buffalo, Clay, Custer, Dawson, Franklin and 13 more | 97 min |
| Jun 30, 1:02 AM CDT | Severe Thunderstorm Watch | SPC | Adams, Antelope, Blaine, Boone, Brown, Buffalo and 31 more | 10 hr |
| Jun 30, 12:06 PM CDT | Mesoscale Discussion | SPC | Pawnee, Richardson | 54 min |
| Jun 30, 3:52 PM CDT | Mesoscale Discussion | SPC | Gage, Johnson, Nemaha, Pawnee, Richardson | 113 min |
Nearby
Tornado Watches in Iowa, 2014Tornado Watches in Nebraska, 2014Every tornado watch in 2014
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.