Alert archive / Iowa / Severe Thunderstorm Watches in 2016

Severe Thunderstorm Watch 256

June 14, 20164 states

The Storm Prediction Center issued this severe thunderstorm watch at Jun 14, 2016, 4:03 PM CDT for 4 states. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued: Jun 14, 2016, 4:03 PM CDT (21:03 UTC)
Expired: Jun 14, 2016, 11:00 PM CDT
In force: 7 hr
Issued by: the Storm Prediction Center
Largest hail expected: 2.5 in
Strongest gust expected: 60 kt

All 33 counties

Allamakee County, IA, Benton County, IA, Buchanan County, IA, Chickasaw County, IA, Clayton County, IA, Clinton County, IA, Delaware County, IA, Dubuque County, IA, Fayette County, IA, Floyd County, IA, Howard County, IA, Jackson County, IA, Jones County, IA, Linn County, IA, Mitchell County, IA, Winneshiek County, IA, Carroll County, IL, Jo Daviess County, IL, Stephenson County, IL, Dodge County, MN, Fillmore County, MN, Houston County, MN, Mower County, MN, Olmsted County, MN, Wabasha County, MN, Winona County, MN, Buffalo County, WI, Crawford County, WI, Grant County, WI, La Crosse County, WI, Lafayette County, WI, Trempealeau County, WI, Vernon County, WI

The radar

The La Crosse radar (KARX), 63 km from the middle of the area, began a volume at 21:06 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.

What SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes: 20%
One or more EF2 to EF5 tornadoes: 5%
Ten or more severe wind reports: 40%
One or more gusts of 65 knots or more: 20%
Ten or more severe hail reports: 30%
One or more hailstones of 2 inches or more: 30%
Six or more combined severe hail and wind reports: 70%

Warnings issued inside it

8 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Jun 14, 4:30 PM CDT	Severe Thunderstorm Warning	ARX	Chickasaw	30 min
Jun 14, 5:24 PM CDT	Flash Flood Warning	ARX	Floyd, Howard, Mitchell	3 hr
Jun 14, 6:26 PM CDT	Flash Flood Warning	ARX	Allamakee, Clayton, Fayette	3 hr
Jun 14, 7:58 PM CDT	Severe Thunderstorm Warning	DVN	Buchanan, Delaware	62 min
Jun 14, 8:16 PM CDT	Flash Flood Warning	DVN	Dubuque	6 hr
Jun 14, 8:24 PM CDT	Flash Flood Warning	DVN	Jo Daviess	6 hr
Jun 14, 8:50 PM CDT	Flash Flood Warning	MKX	Dane, Green, Iowa, Lafayette	4 hr
Jun 14, 9:47 PM CDT	Severe Thunderstorm Warning	DVN	Carroll, Stephenson	58 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 14, 3:49 PM CDT	Mesoscale Discussion	SPC	Henry, Jo Daviess, Mercer, Rock Island	56 min
Jun 14, 6:24 PM CDT	Mesoscale Discussion	SPC	Carroll, Henry, Jo Daviess, Rock Island, Whiteside	66 min
Jun 14, 11:45 AM CDT	Mesoscale Discussion	SPC	Adair, Adams, Audubon, Benton, Black Hawk, Boone and 57 more	2 hr
Jun 14, 12:43 PM CDT	Severe Thunderstorm Watch	SPC	Adair, Adams, Audubon, Black Hawk, Boone, Bremer and 52 more	8 hr
Jun 14, 2:51 PM CDT	Mesoscale Discussion	SPC	Adair, Adams, Audubon, Benton, Black Hawk, Boone and 59 more	114 min
Jun 14, 6:15 PM CDT	Mesoscale Discussion	SPC	Taylor	3 hr
Jun 14, 2:33 PM CDT	Tornado Watch	SPC	Big Stone, Blue Earth, Brown, Carver, Chippewa, Cottonwood and 32 more	5 hr
Jun 14, 5:16 PM CDT	Mesoscale Discussion	SPC	Big Stone, Blue Earth, Carver, Chippewa, Dakota, Faribault and 20 more	59 min

Nearby

Severe Thunderstorm Watches in Iowa, 2016 Severe Thunderstorm Watches in Minnesota, 2016 Severe Thunderstorm Watches in Wisconsin, 2016 Every severe thunderstorm watch in 2016

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.