Alert archive / South Dakota / Severe Thunderstorm Watches in 2016

Severe Thunderstorm Watch 324

July 5, 20164 states

The Storm Prediction Center issued this severe thunderstorm watch at Jul 5, 2016, 3:29 PM CDT for 4 states. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Jul 5, 2016, 3:29 PM CDT (20:29 UTC)
Expired
Jul 5, 2016, 10:00 PM CDT
In force
7 hr
Issued by
the Storm Prediction Center
Largest hail expected
3 in
Strongest gust expected
70 kt
All 45 counties

Buena Vista County, IA, Cherokee County, IA, Clay County, IA, Dickinson County, IA, Ida County, IA, Lyon County, IA, O'Brien County, IA, Osceola County, IA, Plymouth County, IA, Sioux County, IA, Woodbury County, IA, Jackson County, MN, Nobles County, MN, Pipestone County, MN, Rock County, MN, Cedar County, NE, Dakota County, NE, Dixon County, NE, Knox County, NE, Aurora County, SD, Beadle County, SD, Bon Homme County, SD, Brule County, SD, Buffalo County, SD, Charles Mix County, SD, Clay County, SD, Davison County, SD, Douglas County, SD, Hand County, SD, Hanson County, SD, Hughes County, SD, Hutchinson County, SD, Hyde County, SD, Jerauld County, SD, Lake County, SD, Lincoln County, SD, McCook County, SD, Miner County, SD, Minnehaha County, SD, Moody County, SD, Sanborn County, SD, Spink County, SD, Turner County, SD, Union County, SD, Yankton County, SD

The radar

The Sioux Falls radar (KFSD), 89 km from the middle of the area, began a volume at 20:30 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
2%
Ten or more severe wind reports
70%
One or more gusts of 65 knots or more
40%
Ten or more severe hail reports
50%
One or more hailstones of 2 inches or more
40%
Six or more combined severe hail and wind reports
95%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jul 5, 3:29 PM CDTTornado WarningABRHand31 min
Jul 5, 3:50 PM CDTSevere Thunderstorm WarningABRHand25 min
Jul 5, 4:03 PM CDTSevere Thunderstorm WarningFSDBeadle42 min
Jul 5, 4:35 PM CDTSevere Thunderstorm WarningFSDBeadle, Jerauld, Sanborn40 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

Aberdeen, SD (KABR), launched 12:00Z, 8.5 hours before the alert went out and 127 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, Aberdeen, SD at 12:00Z on 2016-07-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 308 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, Aberdeen, SD at 12:00Z on 2016-07-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -25 square meters per square second.19395878Sfc1 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
308 J/kg
Mixed-layer CIN
-449 J/kg
Mixed-layer LCL
1721 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
-25 m²/s²
0-3 km storm-relative helicity
97 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 5, 2:57 PM CDTMesoscale DiscussionSPCCherokee, Lyon, O'Brien, Osceola, Plymouth, Sioux and 1 more63 min
Jul 5, 4:10 PM CDTSevere Thunderstorm WatchSPCCerro Gordo, Chickasaw, Emmet, Floyd, Franklin, Hancock and 10 more7 hr
Jul 4, 8:29 PM CDTMesoscale DiscussionSPCBecker, Big Stone, Clay, Clearwater, Grant, Kittson and 12 more91 min
Jul 4, 11:57 PM CDTMesoscale DiscussionSPCChippewa, Kandiyohi, Lac qui Parle, Redwood, Renville, Stevens and 2 more93 min
Jul 5, 1:19 PM CDTMesoscale DiscussionSPCAnoka, Benton, Big Stone, Carver, Chippewa, Douglas and 15 more56 min
Jul 5, 2:06 PM CDTTornado WatchSPCBenton, Big Stone, Brown, Chippewa, Cottonwood, Douglas and 24 more6 hr
Jul 5, 5:08 PM CDTMesoscale DiscussionSPCAnoka, Benton, Big Stone, Brown, Carver, Chippewa and 30 more97 min
Jul 5, 5:17 PM CDTMesoscale DiscussionSPCItasca, Lake, Saint Louis118 min
Jul 5, 3:44 PM CDTMesoscale DiscussionSPCFranklin, Furnas, Harlan, Kearney, Phelps61 min
Jul 5, 4:59 PM CDTMesoscale DiscussionSPCAdams, Buffalo, Chase, Clay, Custer, Dawson and 24 more3 hr
Jul 5, 6:22 PM CDTSevere Thunderstorm WatchSPCAdams, Buffalo, Chase, Clay, Custer, Dawson and 28 more8 hr

Nearby

Severe Thunderstorm Watches in South Dakota, 2016Severe Thunderstorm Watches in Iowa, 2016Severe Thunderstorm Watches in Minnesota, 2016Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.