Alert archive / Nebraska / Severe Thunderstorm Watches in 2014

Severe Thunderstorm Watch 301

June 16, 201410 counties in Iowa; 50 counties in Nebraska; 24 counties in South Dakota

The Storm Prediction Center issued this severe thunderstorm watch at Jun 16, 2014, 7:12 AM CDT for 10 counties in Iowa; 50 counties in Nebraska; 24 counties in South Dakota. It was in force for 9 hr.

The area

The outline as issued.

The facts

Issued: Jun 16, 2014, 7:12 AM CDT (12:12 UTC)
Expired: Jun 16, 2014, 4:00 PM CDT
In force: 9 hr
Issued by: the Storm Prediction Center
Largest hail expected: 2.5 in
Strongest gust expected: 60 kt

All 84 counties

Fremont County, IA, Harrison County, IA, Lyon County, IA, Mills County, IA, Monona County, IA, Plymouth County, IA, Pottawattamie County, IA, Shelby County, IA, Sioux County, IA, Woodbury County, IA, Antelope County, NE, Boone County, NE, Boyd County, NE, Burt County, NE, Butler County, NE, Cass County, NE, Cedar County, NE, Clay County, NE, Colfax County, NE, Cuming County, NE, Dakota County, NE, Dixon County, NE, Dodge County, NE, Douglas County, NE, Fillmore County, NE, Gage County, NE, Garfield County, NE, Greeley County, NE, Hamilton County, NE, Holt County, NE, Howard County, NE, Jefferson County, NE, Johnson County, NE, Keya Paha County, NE, Knox County, NE, Lancaster County, NE, Madison County, NE, Merrick County, NE, Nance County, NE, Nemaha County, NE, Nuckolls County, NE, Otoe County, NE, Pawnee County, NE, Pierce County, NE, Platte County, NE, Polk County, NE, Richardson County, NE, Rock County, NE, Saline County, NE, Sarpy County, NE, Saunders County, NE, Seward County, NE, Stanton County, NE, Thayer County, NE, Thurston County, NE, Valley County, NE, Washington County, NE, Wayne County, NE, Wheeler County, NE, York County, NE, Aurora County, SD, Beadle County, SD, Bon Homme County, SD, Brookings County, SD, Brule County, SD, Charles Mix County, SD, Clay County, SD, Davison County, SD, Douglas County, SD, Gregory County, SD, Hanson County, SD, Hutchinson County, SD, Jerauld County, SD, Kingsbury County, SD, Lake County, SD, Lincoln County, SD, McCook County, SD, Miner County, SD, Minnehaha County, SD, Moody County, SD, Sanborn County, SD, Turner County, SD, Union County, SD, Yankton County, SD

The radar

The Omaha radar (KOAX), 118 km from the middle of the area, began a volume at 12:15 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: 10%
One or more EF2 to EF5 tornadoes: 5%
Ten or more severe wind reports: 30%
One or more gusts of 65 knots or more: 10%
Ten or more severe hail reports: 70%
One or more hailstones of 2 inches or more: 40%
Six or more combined severe hail and wind reports: 90%

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Jun 16, 7:26 AM CDT	Severe Thunderstorm Warning	GID	Fillmore, Thayer	49 min
Jun 16, 7:28 AM CDT	Severe Thunderstorm Warning	GID	Greeley	47 min
Jun 16, 7:29 AM CDT	Severe Thunderstorm Warning	GID	Merrick, Nance	31 min
Jun 16, 7:52 AM CDT	Severe Thunderstorm Warning	GID	Fillmore, York	53 min
Jun 16, 7:57 AM CDT	Severe Thunderstorm Warning	GID	Merrick, Nance	33 min
Jun 16, 7:58 AM CDT	Severe Thunderstorm Warning	OAX	Boone, Madison, Platte	32 min
Jun 16, 8:17 AM CDT	Severe Thunderstorm Warning	OAX	Butler, Seward	43 min
Jun 16, 8:23 AM CDT	Severe Thunderstorm Warning	LBF	Holt	52 min
Jun 16, 8:27 AM CDT	Severe Thunderstorm Warning	OAX	Antelope, Boone, Madison, Pierce, Platte	48 min
Jun 16, 8:35 AM CDT	Severe Thunderstorm Warning	GID	Polk	10 min
Jun 16, 8:40 AM CDT	Severe Thunderstorm Warning	OAX	Butler, Colfax, Platte	50 min
Jun 16, 8:41 AM CDT	Severe Thunderstorm Warning	OAX	Saline, Seward	49 min
Jun 16, 8:55 AM CDT	Severe Thunderstorm Warning	OAX	Cedar, Knox, Pierce	50 min
Jun 16, 9:26 AM CDT	Severe Thunderstorm Warning	OAX	Butler, Seward	34 min
Jun 16, 9:44 AM CDT	Severe Thunderstorm Warning	OAX	Butler, Lancaster, Saunders, Seward	46 min
Jun 16, 9:58 AM CDT	Severe Thunderstorm Warning	OAX	Cuming, Thurston, Wayne	32 min
Jun 16, 10:07 AM CDT	Severe Thunderstorm Warning	FSD	Woodbury	38 min
Jun 16, 10:21 AM CDT	Severe Thunderstorm Warning	FSD	Brule, Jerauld	54 min
Jun 16, 10:23 AM CDT	Severe Thunderstorm Warning	OAX	Dodge	37 min
Jun 16, 10:26 AM CDT	Severe Thunderstorm Warning	OAX	Lancaster, Saunders	49 min
Jun 16, 10:40 AM CDT	Severe Thunderstorm Warning	OAX	Burt, Dodge, Washington	50 min
Jun 16, 10:51 AM CDT	Severe Thunderstorm Warning	FSD	Lyon, Sioux	39 min
Jun 16, 10:53 AM CDT	Flash Flood Warning	FSD	Lyon, Plymouth, Sioux	3 hr
Jun 16, 10:54 AM CDT	Severe Thunderstorm Warning	OAX	Cuming, Thurston, Wayne	36 min
Jun 16, 11:00 AM CDT	Severe Thunderstorm Warning	OAX	Douglas, Sarpy, Saunders	60 min
Jun 16, 11:07 AM CDT	Flash Flood Warning	FSD	Cherokee, Clay, Dickinson, Lyon, O'Brien, Osceola and 3 more	9 hr
Jun 16, 11:08 AM CDT	Severe Thunderstorm Warning	FSD	Aurora, Jerauld, Sanborn	52 min
Jun 16, 11:18 AM CDT	Severe Thunderstorm Warning	OAX	Dodge, Douglas, Saunders, Washington	27 min
Jun 16, 11:21 AM CDT	Severe Thunderstorm Warning	OAX	Harrison, Monona	54 min
Jun 16, 11:24 AM CDT	Severe Thunderstorm Warning	OAX	Thurston	36 min
Jun 16, 11:34 AM CDT	Severe Thunderstorm Warning	OAX	Harrison, Pottawattamie	56 min
Jun 16, 11:42 AM CDT	Severe Thunderstorm Warning	OAX	Harrison	33 min
Jun 16, 11:52 AM CDT	Severe Thunderstorm Warning	FSD	Davison, Hanson, Miner, Sanborn	38 min
Jun 16, 12:02 PM CDT	Severe Thunderstorm Warning	FSD	Woodbury	43 min
Jun 16, 12:02 PM CDT	Severe Thunderstorm Warning	OAX	Cedar	28 min
Jun 16, 12:08 PM CDT	Severe Thunderstorm Warning	OAX	Harrison, Pottawattamie	52 min
Jun 16, 12:17 PM CDT	Severe Thunderstorm Warning	FSD	McCook, Minnehaha	43 min
Jun 16, 12:31 PM CDT	Flash Flood Warning	FSD	Brookings, Minnehaha, Moody	6 hr
Jun 16, 12:33 PM CDT	Severe Thunderstorm Warning	FSD	Lake, Miner	42 min
Jun 16, 12:41 PM CDT	Severe Thunderstorm Warning	OAX	Harrison, Shelby	49 min
Jun 16, 12:58 PM CDT	Flash Flood Warning	FSD	Buena Vista, Cherokee, Ida, Woodbury	3 hr
Jun 16, 12:59 PM CDT	Severe Thunderstorm Warning	FSD	Minnehaha	46 min
Jun 16, 1:06 PM CDT	Severe Thunderstorm Warning	FSD	Plymouth, Sioux	39 min
Jun 16, 1:11 PM CDT	Severe Thunderstorm Warning	FSD	Minnehaha	49 min
Jun 16, 1:34 PM CDT	Severe Thunderstorm Warning	FSD	O'Brien, Sioux	26 min
Jun 16, 1:34 PM CDT	Severe Thunderstorm Warning	FSD	Moody	41 min
Jun 16, 1:39 PM CDT	Flash Flood Warning	FSD	Brookings, Lake, Lincoln, McCook, Miner, Minnehaha and 2 more	3 hr
Jun 16, 1:45 PM CDT	Severe Thunderstorm Warning	FSD	Lyon, Sioux	30 min
Jun 16, 1:52 PM CDT	Severe Thunderstorm Warning	FSD	Minnehaha, Moody	38 min
Jun 16, 2:00 PM CDT	Severe Thunderstorm Warning	FSD	Hutchinson, McCook, Minnehaha, Turner	45 min
Jun 16, 2:15 PM CDT	Severe Thunderstorm Warning	FSD	Lyon, Osceola	30 min
Jun 16, 2:17 PM CDT	Severe Thunderstorm Warning	FSD	Minnehaha	43 min
Jun 16, 2:41 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Minnehaha, Turner	34 min
Jun 16, 3:03 PM CDT	Severe Thunderstorm Warning	OAX	Madison, Platte, Stanton	42 min
Jun 16, 3:15 PM CDT	Severe Thunderstorm Warning	FSD	Lyon	45 min
Jun 16, 3:24 PM CDT	Flash Flood Warning	FSD	Lyon, Sioux	4 hr
Jun 16, 3:40 PM CDT	Severe Thunderstorm Warning	OAX	Cuming, Stanton, Wayne	50 min
Jun 16, 3:41 PM CDT	Tornado Warning	FSD	Lyon	34 min
Jun 16, 3:41 PM CDT	Tornado Warning	OAX	Cuming, Stanton	34 min
Jun 16, 3:54 PM CDT	Severe Thunderstorm Warning	FSD	Lyon	51 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, 0.2 hours before the alert went out and 118 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 33 J/kg
Mixed-layer CIN: -485 J/kg
Mixed-layer LCL: 1667 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 137 m²/s²
0-3 km storm-relative helicity: 236 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 16, 10:19 AM CDT	Mesoscale Discussion	SPC	Adair, Adams, Appanoose, Audubon, Boone, Buena Vista and 64 more	116 min
Jun 16, 12:25 PM CDT	Tornado Watch	SPC	Audubon, Boone, Buena Vista, Calhoun, Carroll, Cherokee and 33 more	8 hr
Jun 16, 2:13 PM CDT	Mesoscale Discussion	SPC	Fremont, Mills	62 min
Jun 16, 2:19 PM CDT	Mesoscale Discussion	SPC	Davis, Jefferson, Lee, Van Buren, Wapello	86 min
Jun 16, 3:07 PM CDT	Tornado Watch PDS	SPC	Harrison, Monona, Shelby	7 hr
Jun 16, 3:11 PM CDT	Mesoscale Discussion	SPC	Boone, Buena Vista, Calhoun, Carroll, Cherokee, Clay and 18 more	2 hr
Jun 16, 3:36 PM CDT	Severe Thunderstorm Watch	SPC	Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 13 more	5 hr
Jun 16, 5:10 PM CDT	Mesoscale Discussion	SPC	Allamakee, Bremer, Chickasaw, Clayton, Fayette, Floyd and 3 more	35 min
Jun 16, 5:37 PM CDT	Tornado Watch	SPC	Audubon, Black Hawk, Boone, Bremer, Buena Vista, Butler and 38 more	6 hr
Jun 16, 5:46 PM CDT	Tornado Watch	SPC	Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more	6 hr
Jun 16, 2:47 AM CDT	Mesoscale Discussion	SPC	Adams, Antelope, Blaine, Boone, Brown, Buffalo and 30 more	118 min
Jun 16, 3:50 PM CDT	Mesoscale Discussion	SPC	Adams, Buffalo, Dawson, Franklin, Frontier, Furnas and 7 more	115 min
Jun 16, 4:03 PM CDT	Mesoscale Discussion	SPC	Box Butte, Cherry, Dawes, Sheridan, Sioux	117 min
Jun 16, 4:32 PM CDT	Mesoscale Discussion	SPC	Cuming, Thurston	58 min
Jun 16, 6:50 PM CDT	Mesoscale Discussion	SPC	Garfield, Wheeler	55 min
Jun 16, 7:33 AM CDT	Mesoscale Discussion	SPC	Beadle, Brown, Buffalo, Clark, Codington, Day and 18 more	57 min
Jun 16, 12:48 PM CDT	Mesoscale Discussion	SPC	Bon Homme, Brookings, Clay, Davison, Douglas, Hanson and 12 more	87 min

Nearby

Severe Thunderstorm Watches in Nebraska, 2014 Severe Thunderstorm Watches in South Dakota, 2014 Severe Thunderstorm Watches in Iowa, 2014 Every severe thunderstorm 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.