Alert archive / Nebraska / Severe Thunderstorm Watches in 2005

Severe Thunderstorm Watch 283

May 17, 200518 counties in Nebraska; 17 counties in South Dakota

The Storm Prediction Center issued this severe thunderstorm watch at May 17, 2005, 12:50 PM MDT for 18 counties in Nebraska; 17 counties in South Dakota. It was in force for 8 hr.

The area

The outline as issued.

The facts

Issued
May 17, 2005, 12:50 PM MDT (18:50 UTC)
Expired
May 17, 2005, 9:00 PM MDT
In force
8 hr
Issued by
the Storm Prediction Center
All 35 counties

Arthur County, NE, Blaine County, NE, Brown County, NE, Cherry County, NE, Custer County, NE, Garden County, NE, Grant County, NE, Hooker County, NE, Keith County, NE, Keya Paha County, NE, Lincoln County, NE, Logan County, NE, Loup County, NE, McPherson County, NE, Rock County, NE, Sheridan County, NE, Sherman County, NE, Thomas County, NE, Bennett County, SD, Butte County, SD, Corson County, SD, Dewey County, SD, Haakon County, SD, Harding County, SD, Jackson County, SD, Jones County, SD, Meade County, SD, Mellette County, SD, Oglala Lakota County, SD, Pennington County, SD, Perkins County, SD, Stanley County, SD, Todd County, SD, Tripp County, SD, Ziebach County, SD

The radar

The Rapid City radar (KUDX), 121 km from the middle of the area, began a volume at 18:52 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.

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
May 17, 2:41 PM MDTSevere Thunderstorm WarningLBFLincoln64 min
May 17, 2:42 PM MDTSevere Thunderstorm WarningUNRBennett, Jackson40 min
May 17, 3:08 PM MDTSevere Thunderstorm WarningLBFMcPherson37 min
May 17, 3:15 PM MDTTornado WarningLBFLincoln30 min
May 17, 3:16 PM MDTSevere Thunderstorm WarningUNRBennett, Jackson44 min
May 17, 3:39 PM MDTSevere Thunderstorm WarningLBFLogan, McPherson, Thomas66 min
May 17, 3:44 PM MDTTornado WarningLBFLincoln31 min
May 17, 4:12 PM MDTSevere Thunderstorm WarningUNRMellette19 min
May 17, 4:15 PM MDTSevere Thunderstorm WarningLBFLincoln, Logan53 min
May 17, 4:22 PM MDTSevere Thunderstorm WarningLBFBrown, Cherry53 min
May 17, 4:27 PM MDTSevere Thunderstorm WarningLBFBlaine48 min
May 17, 4:34 PM MDTSevere Thunderstorm WarningABRJones41 min
May 17, 4:36 PM MDTSevere Thunderstorm WarningUNRTodd54 min
May 17, 4:45 PM MDTSevere Thunderstorm WarningLBFLogan, Thomas41 min
May 17, 4:57 PM MDTSevere Thunderstorm WarningUNRHaakon50 min
May 17, 5:03 PM MDTSevere Thunderstorm WarningLBFCuster57 min
May 17, 5:05 PM MDTSevere Thunderstorm WarningLBFBrown43 min
May 17, 5:15 PM MDTSevere Thunderstorm WarningLBFBlaine45 min
May 17, 5:16 PM MDTSevere Thunderstorm WarningABRJones44 min
May 17, 5:24 PM MDTSevere Thunderstorm WarningLBFKeya Paha52 min
May 17, 5:30 PM MDTSevere Thunderstorm WarningLBFCuster45 min
May 17, 5:36 PM MDTSevere Thunderstorm WarningUNRTripp39 min
May 17, 5:39 PM MDTSevere Thunderstorm WarningABRDewey, Stanley45 min
May 17, 6:00 PM MDTSevere Thunderstorm WarningLBFBlaine, Loup48 min
May 17, 6:05 PM MDTSevere Thunderstorm WarningLBFRock41 min
May 17, 6:06 PM MDTSevere Thunderstorm WarningLBFCuster54 min
May 17, 6:58 PM MDTSevere Thunderstorm WarningLBFCuster35 min
May 17, 7:07 PM MDTSevere Thunderstorm WarningGIDSherman53 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

Rapid City, SD (KUNR), launched 12:00Z, 6.8 hours before the alert went out and 125 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, Rapid City, SD at 12:00Z on 2005-05-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 35 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, Rapid City, SD at 12:00Z on 2005-05-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 77 square meters per square second.193958Sfc1 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
35 J/kg
Mixed-layer CIN
-339 J/kg
Mixed-layer LCL
2358 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
77 m²/s²
0-3 km storm-relative helicity
72 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
May 17, 12:29 PM MDTMesoscale DiscussionSPCAdams, Arthur, Blaine, Brown, Buffalo, Chase and 29 more2 hr
May 17, 4:29 PM MDTMesoscale DiscussionSPCAdams, Blaine, Boyd, Brown, Buffalo, Clay and 20 more31 min
May 17, 4:45 PM MDTSevere Thunderstorm WatchSPCAdams, Blaine, Boone, Boyd, Brown, Buffalo and 29 more6 hr
May 17, 11:53 AM MDTMesoscale DiscussionSPCButte, Corson, Dewey, Haakon, Harding, Jackson and 8 more2 hr
May 17, 1:30 PM MDTSevere Thunderstorm WatchSPCHarding, Perkins8 hr
May 17, 5:20 PM MDTMesoscale DiscussionSPCHarding85 min

Nearby

Severe Thunderstorm Watches in Nebraska, 2005Severe Thunderstorm Watches in South Dakota, 2005Every severe thunderstorm watch in 2005

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.