Alert archive / Nebraska / Severe Thunderstorm Watches in 2005

Severe Thunderstorm Watch 285

May 17, 200535 counties in Nebraska; 20 counties in South Dakota

The Storm Prediction Center issued this severe thunderstorm watch at May 17, 2005, 5:45 PM CDT for 35 counties in Nebraska; 20 counties in South Dakota. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: May 17, 2005, 5:45 PM CDT (22:45 UTC)
Expired: May 18, 2005, 12:00 AM CDT
In force: 6 hr
Issued by: the Storm Prediction Center

All 55 counties

Adams County, NE, Blaine County, NE, Boone County, NE, Boyd County, NE, Brown County, NE, Buffalo County, NE, Cherry County, NE, Clay County, NE, Custer County, NE, Dawson County, NE, Franklin County, NE, Furnas County, NE, Garfield County, NE, Gosper County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Harlan County, NE, Holt County, NE, Howard County, NE, Kearney County, NE, Keya Paha County, NE, Logan County, NE, Loup County, NE, Merrick County, NE, Nance County, NE, Nuckolls County, NE, Phelps County, NE, Rock County, NE, Sherman County, NE, Thayer County, NE, Thomas County, NE, Valley County, NE, Webster County, NE, Wheeler County, NE, Brule County, SD, Buffalo County, SD, Campbell County, SD, Charles Mix County, SD, Corson County, SD, Dewey County, SD, Gregory County, SD, Haakon County, SD, Hughes County, SD, Hyde County, SD, Jones County, SD, Lyman County, SD, Mellette County, SD, Potter County, SD, Stanley County, SD, Sully County, SD, Todd County, SD, Tripp County, SD, Walworth County, SD, Ziebach County, SD

The radar

The North Platte radar (KLNX), 189 km from the middle of the area, began a volume at 22:45 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

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

Issued	Product	Office	Counties	Lasted
May 17, 5:45 PM CDT	Severe Thunderstorm Warning	LBF	Logan, Thomas	41 min
May 17, 5:57 PM CDT	Severe Thunderstorm Warning	UNR	Haakon	50 min
May 17, 6:03 PM CDT	Severe Thunderstorm Warning	LBF	Custer	57 min
May 17, 6:05 PM CDT	Severe Thunderstorm Warning	LBF	Brown	43 min
May 17, 6:14 PM CDT	Severe Thunderstorm Warning	GID	Dawson	61 min
May 17, 6:15 PM CDT	Severe Thunderstorm Warning	LBF	Blaine	45 min
May 17, 6:16 PM CDT	Severe Thunderstorm Warning	ABR	Jones	44 min
May 17, 6:24 PM CDT	Severe Thunderstorm Warning	LBF	Keya Paha	52 min
May 17, 6:30 PM CDT	Severe Thunderstorm Warning	LBF	Custer	45 min
May 17, 6:36 PM CDT	Severe Thunderstorm Warning	UNR	Tripp	39 min
May 17, 6:39 PM CDT	Severe Thunderstorm Warning	ABR	Dewey, Stanley	45 min
May 17, 6:52 PM CDT	Severe Thunderstorm Warning	ABR	Lyman	31 min
May 17, 7:00 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Loup	48 min
May 17, 7:05 PM CDT	Severe Thunderstorm Warning	LBF	Rock	41 min
May 17, 7:06 PM CDT	Severe Thunderstorm Warning	LBF	Custer	54 min
May 17, 7:17 PM CDT	Severe Thunderstorm Warning	FSD	Gregory	33 min
May 17, 7:27 PM CDT	Severe Thunderstorm Warning	GID	Dawson	63 min
May 17, 7:44 PM CDT	Severe Thunderstorm Warning	GID	Buffalo	61 min
May 17, 7:49 PM CDT	Severe Thunderstorm Warning	FSD	Brule	26 min
May 17, 7:57 PM CDT	Severe Thunderstorm Warning	GID	Phelps	63 min
May 17, 7:58 PM CDT	Severe Thunderstorm Warning	LBF	Custer	35 min
May 17, 8:06 PM CDT	Severe Thunderstorm Warning	GID	Dawson	22 min
May 17, 8:07 PM CDT	Severe Thunderstorm Warning	GID	Sherman	53 min
May 17, 8:07 PM CDT	Severe Thunderstorm Warning	ABR	Hughes, Lyman	23 min
May 17, 8:08 PM CDT	Severe Thunderstorm Warning	FSD	Brule	22 min
May 17, 8:28 PM CDT	Severe Thunderstorm Warning	ABR	Hughes	32 min
May 17, 8:32 PM CDT	Severe Thunderstorm Warning	ABR	Buffalo	28 min
May 17, 8:42 PM CDT	Severe Thunderstorm Warning	GID	Franklin, Harlan	53 min
May 17, 8:56 PM CDT	Severe Thunderstorm Warning	GID	Kearney, Phelps	48 min
May 17, 9:06 PM CDT	Severe Thunderstorm Warning	LBF	Garfield, Wheeler	26 min
May 17, 10:46 PM CDT	Severe Thunderstorm Warning	GID	Merrick	29 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, 10.8 hours before the alert went out and 187 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1172 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 226 m²/s²
0-3 km storm-relative helicity: 253 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.

Issued	Product	Office	Counties	Lasted
May 17, 1:29 PM CDT	Mesoscale Discussion	SPC	Adams, Arthur, Blaine, Brown, Buffalo, Chase and 29 more	2 hr
May 17, 1:50 PM CDT	Severe Thunderstorm Watch	SPC	Arthur, Blaine, Brown, Cherry, Custer, Garden and 12 more	8 hr
May 17, 5:29 PM CDT	Mesoscale Discussion	SPC	Adams, Blaine, Boyd, Brown, Buffalo, Clay and 20 more	31 min
May 17, 12:53 PM CDT	Mesoscale Discussion	SPC	Butte, Corson, Dewey, Haakon, Harding, Jackson and 8 more	2 hr
May 17, 2:30 PM CDT	Severe Thunderstorm Watch	SPC	Harding, Perkins	8 hr
May 17, 6:20 PM CDT	Mesoscale Discussion	SPC	Harding	85 min

Nearby

Severe Thunderstorm Watches in Nebraska, 2005 Severe Thunderstorm Watches in South Dakota, 2005 Every 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.