Alert archive / Nebraska / Severe Thunderstorm Watches in 2002

Severe Thunderstorm Watch 468

June 25, 200229 counties in Nebraska

The Storm Prediction Center issued this severe thunderstorm watch at Jun 25, 2002, 4:00 PM MDT for 29 counties in Nebraska. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jun 25, 2002, 4:00 PM MDT (22:00 UTC)
Expired
Jun 25, 2002, 9:00 PM MDT
In force
5 hr
Issued by
the Storm Prediction Center
All 29 counties

Arthur County, NE, Banner County, NE, Blaine County, NE, Box Butte County, NE, Boyd County, NE, Brown County, NE, Cherry County, NE, Cheyenne County, NE, Custer County, NE, Deuel County, NE, Garden County, NE, Garfield County, NE, Grant County, NE, Holt County, NE, Hooker County, NE, Keith County, NE, Keya Paha County, NE, Kimball County, NE, Lincoln County, NE, Logan County, NE, Loup County, NE, McPherson County, NE, Morrill County, NE, Rock County, NE, Scotts Bluff County, NE, Sheridan County, NE, Sioux County, NE, Thomas County, NE, Valley County, NE

The radar

The North Platte radar (KLNX), 107 km from the middle of the area, began a volume at 21:59 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

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

IssuedProductOfficeCountiesLasted
Jun 25, 4:31 PM MDTSevere Thunderstorm WarningLBFCherry59 min
Jun 25, 4:46 PM MDTSevere Thunderstorm WarningLBFLoup44 min
Jun 25, 5:30 PM MDTSevere Thunderstorm WarningLBFLoup45 min
Jun 25, 5:50 PM MDTSevere Thunderstorm WarningLBFGrant25 min
Jun 25, 6:00 PM MDTSevere Thunderstorm WarningLBFCuster60 min
Jun 25, 6:06 PM MDTSevere Thunderstorm WarningLBFArthur, Hooker, McPherson54 min
Jun 25, 6:26 PM MDTSevere Thunderstorm WarningLBFLogan49 min
Jun 25, 6:38 PM MDTSevere Thunderstorm WarningLBFHolt67 min
Jun 25, 7:01 PM MDTSevere Thunderstorm WarningLBFKeith59 min
Jun 25, 7:07 PM MDTSevere Thunderstorm WarningLBFCuster53 min
Jun 25, 7:56 PM MDTSevere Thunderstorm WarningLBFCuster64 min

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 10.0 hours before the alert went out and 141 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, N. Platte/Lee Bi, NE at 12:00Z on 2002-06-25Temperature 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, N. Platte/Lee Bi, NE at 12:00Z on 2002-06-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -3 square meters per square second.1939Sfc1 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
1930 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
-3 m²/s²
0-3 km storm-relative helicity
2 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

Nearby

Severe Thunderstorm Watches in Nebraska, 2002Every severe thunderstorm watch in 2002

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.