Alert archive / Nebraska / Tornado Watches in 1999

Tornado Watch 391

June 5, 199914 counties in Nebraska; 8 counties in South Dakota; 4 counties in Wyoming

The Storm Prediction Center issued this tornado watch at Jun 5, 1999, 3:00 PM MDT for 14 counties in Nebraska; 8 counties in South Dakota; 4 counties in Wyoming. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Jun 5, 1999, 3:00 PM MDT (21:00 UTC)
Expired
Jun 5, 1999, 9:00 PM MDT
In force
6 hr
Issued by
the Storm Prediction Center
All 26 counties

Arthur County, NE, Banner County, NE, Box Butte County, NE, Cherry County, NE, Dawes County, NE, Garden County, NE, Grant County, NE, Hooker County, NE, Logan County, NE, McPherson County, NE, Morrill County, NE, Scotts Bluff County, NE, Sheridan County, NE, Sioux County, NE, Bennett County, SD, Butte County, SD, Custer County, SD, Fall River County, SD, Lawrence County, SD, Meade County, SD, Oglala Lakota County, SD, Pennington County, SD, Campbell County, WY, Crook County, WY, Niobrara County, WY, Weston County, WY

The radar

The Rapid City radar (KUDX), 60 km from the middle of the area, began a volume at 21:01 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

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

IssuedProductOfficeCountiesLasted
Jun 5, 3:02 PM MDTTornado WarningUNRCampbell48 min
Jun 5, 3:14 PM MDTSevere Thunderstorm WarningUNRCrook46 min
Jun 5, 3:47 PM MDTSevere Thunderstorm WarningUNRCampbell48 min
Jun 5, 3:50 PM MDTSevere Thunderstorm WarningCYSScotts Bluff30 min
Jun 5, 3:59 PM MDTSevere Thunderstorm WarningUNRCrook46 min
Jun 5, 4:09 PM MDTSevere Thunderstorm WarningUNRFall River31 min
Jun 5, 4:18 PM MDTSevere Thunderstorm WarningCYSBox Butte, Morrill42 min
Jun 5, 4:49 PM MDTSevere Thunderstorm WarningCYSDawes41 min
Jun 5, 4:58 PM MDTSevere Thunderstorm WarningCYSBox Butte22 min
Jun 5, 5:01 PM MDTTornado WarningLBFSheridan34 min
Jun 5, 5:02 PM MDTSevere Thunderstorm WarningLBFLogan48 min
Jun 5, 5:14 PM MDTTornado WarningUNRBennett51 min
Jun 5, 5:31 PM MDTSevere Thunderstorm WarningCYSDawes44 min
Jun 5, 5:36 PM MDTTornado WarningLBFSheridan49 min
Jun 5, 5:40 PM MDTSevere Thunderstorm WarningLBFHooker35 min
Jun 5, 5:45 PM MDTSevere Thunderstorm WarningLBFCherry60 min
Jun 5, 6:05 PM MDTTornado WarningUNRBennett35 min
Jun 5, 6:44 PM MDTSevere Thunderstorm WarningLBFCherry61 min
Jun 5, 6:46 PM MDTSevere Thunderstorm WarningUNRPennington64 min
Jun 5, 7:20 PM MDTSevere Thunderstorm WarningUNRMeade50 min
Jun 5, 7:39 PM MDTTornado WarningLBFCherry46 min
Jun 5, 8:36 PM MDTSevere Thunderstorm WarningUNRMeade49 min

The nearest sounding before it

Rapid City, SD (KUNR), launched 12:00Z, 9.0 hours before the alert went out and 53 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 1999-06-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1999-06-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -42 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1172 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
-42 m²/s²
0-3 km storm-relative helicity
-53 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 5, 3:15 PM MDTTornado WatchSPCAntelope, Blaine, Boyd, Brown, Cedar, Dixon and 6 more7 hr
Jun 5, 4:15 PM MDTTornado WatchSPCAntelope, Boone, Buffalo, Burt, Butler, Colfax and 27 more6 hr
Jun 4, 10:15 PM MDTTornado WatchSPCAurora, Beadle, Bennett, Bon Homme, Brookings, Brule and 38 more6 hr
Jun 5, 12:15 AM MDTSevere Thunderstorm WatchSPCBrown, Day, Edmunds, Grant, Marshall, Roberts6 hr

Nearby

Tornado Watches in Nebraska, 1999Tornado Watches in South Dakota, 1999Tornado Watches in Wyoming, 1999Every tornado watch in 1999

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.