Alert archive / Iowa / Tornado Watches in 2014

Tornado Watch 234

June 5, 20144 states

The Storm Prediction Center issued this tornado watch at Jun 5, 2014, 4:55 PM CDT for 4 states. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued
Jun 5, 2014, 4:55 PM CDT (21:55 UTC)
Expired
Jun 5, 2014, 9:21 PM CDT
In force
4 hr
Issued by
the Storm Prediction Center
Largest hail expected
2 in
Strongest gust expected
60 kt
All 58 counties

Audubon County, IA, Buena Vista County, IA, Calhoun County, IA, Carroll County, IA, Cass County, IA, Cherokee County, IA, Clay County, IA, Crawford County, IA, Dickinson County, IA, Emmet County, IA, Greene County, IA, Guthrie County, IA, Harrison County, IA, Humboldt County, IA, Ida County, IA, Kossuth County, IA, Lyon County, IA, Monona County, IA, O'Brien County, IA, Osceola County, IA, Palo Alto County, IA, Plymouth County, IA, Pocahontas County, IA, Pottawattamie County, IA, Sac County, IA, Shelby County, IA, Sioux County, IA, Webster County, IA, Woodbury County, IA, Brown County, MN, Cottonwood County, MN, Jackson County, MN, Lincoln County, MN, Lyon County, MN, Martin County, MN, Murray County, MN, Nobles County, MN, Pipestone County, MN, Redwood County, MN, Rock County, MN, Watonwan County, MN, Yellow Medicine County, MN, Burt County, NE, Cuming County, NE, Dakota County, NE, Dixon County, NE, Dodge County, NE, Douglas County, NE, Sarpy County, NE, Saunders County, NE, Thurston County, NE, Washington County, NE, Brookings County, SD, Clay County, SD, Lincoln County, SD, Minnehaha County, SD, Moody County, SD, Union County, SD

The radar

The Sioux Falls radar (KFSD), 88 km from the middle of the area, began a volume at 21:56 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
40%
One or more EF2 to EF5 tornadoes
10%
Ten or more severe wind reports
20%
One or more gusts of 65 knots or more
5%
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
60%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jun 5, 4:59 PM CDTSevere Thunderstorm WarningOAXHarrison, Monona24 min
Jun 5, 5:05 PM CDTSevere Thunderstorm WarningDMXEmmet, Palo Alto25 min
Jun 5, 5:09 PM CDTTornado WarningFSDRock39 min
Jun 5, 5:12 PM CDTSevere Thunderstorm WarningOAXHarrison38 min
Jun 5, 5:14 PM CDTSevere Thunderstorm WarningFSDLyon46 min
Jun 5, 5:16 PM CDTSevere Thunderstorm WarningFSDSioux44 min
Jun 5, 5:30 PM CDTSevere Thunderstorm WarningMPXRedwood, Yellow Medicine45 min
Jun 5, 5:33 PM CDTSevere Thunderstorm WarningFSDLincoln, Lyon27 min
Jun 5, 5:46 PM CDTSevere Thunderstorm WarningFSDLyon, Osceola19 min
Jun 5, 5:52 PM CDTSevere Thunderstorm WarningFSDLyon38 min
Jun 5, 6:33 PM CDTSevere Thunderstorm WarningOAXPottawattamie27 min
Jun 5, 6:39 PM CDTSevere Thunderstorm WarningFSDLyon, Murray, Pipestone19 min
Jun 5, 6:41 PM CDTSevere Thunderstorm WarningOAXPottawattamie34 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, 9.9 hours before the alert went out and 226 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, Omaha, NE at 12:00Z on 2014-06-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 446 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, Omaha, NE at 12:00Z on 2014-06-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -13 square meters per square second.1939587897Sfc1 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
446 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
593 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
-13 m²/s²
0-3 km storm-relative helicity
51 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
Jun 5, 1:55 PM CDTMesoscale DiscussionSPCBuena Vista, Cherokee, Clay, Crawford, Dickinson, Emmet and 12 more95 min
Jun 5, 4:35 PM CDTMesoscale DiscussionSPCAudubon, Buena Vista, Calhoun, Carroll, Cass, Cherokee and 19 more85 min
Jun 4, 9:09 PM CDTMesoscale DiscussionSPCArthur, Banner, Box Butte, Chase, Cherry, Cheyenne and 17 more96 min

Nearby

Tornado Watches in Iowa, 2014Tornado Watches in Minnesota, 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.