Alert archive / Nebraska / Severe Thunderstorm Watches in 2001

Severe Thunderstorm Watch 480

June 29, 200113 counties in Nebraska

The Storm Prediction Center issued this severe thunderstorm watch at Jun 29, 2001, 4:00 PM MDT for 13 counties in Nebraska. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued
Jun 29, 2001, 4:00 PM MDT (22:00 UTC)
Expired
Jun 29, 2001, 8:00 PM MDT
In force
4 hr
Issued by
the Storm Prediction Center

Counties Arthur County, NE, Chase County, NE, Cherry County, NE, Frontier County, NE, Grant County, NE, Hayes County, NE, Hooker County, NE, Keith County, NE, Lincoln County, NE, Logan County, NE, McPherson County, NE, Perkins County, NE, Thomas County, NE

The radar

The North Platte radar (KLNX), 31 km from the middle of the area, began a volume at 22:02 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

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

IssuedProductOfficeCountiesLasted
Jun 29, 4:00 PM MDTSevere Thunderstorm WarningLBFLincoln, McPherson60 min
Jun 29, 4:13 PM MDTSevere Thunderstorm WarningLBFHooker, McPherson62 min
Jun 29, 4:24 PM MDTSevere Thunderstorm WarningLBFGrant51 min
Jun 29, 4:35 PM MDTSevere Thunderstorm WarningLBFLogan55 min
Jun 29, 4:46 PM MDTSevere Thunderstorm WarningLBFCherry44 min
Jun 29, 5:14 PM MDTSevere Thunderstorm WarningLBFHooker, Thomas61 min
Jun 29, 5:21 PM MDTSevere Thunderstorm WarningLBFBlaine, Brown, Cherry39 min
Jun 29, 5:52 PM MDTSevere Thunderstorm WarningLBFCherry53 min
Jun 29, 6:02 PM MDTSevere Thunderstorm WarningLBFThomas43 min
Jun 29, 6:40 PM MDTSevere Thunderstorm WarningLBFCherry65 min
Jun 29, 6:44 PM MDTTornado WarningLBFCherry61 min
Jun 29, 7:16 PM MDTSevere Thunderstorm WarningLBFFrontier44 min

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 10.0 hours before the alert went out and 98 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 2001-06-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1296 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, N. Platte/Lee Bi, NE at 12:00Z on 2001-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 97 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
1296 J/kg
Mixed-layer CIN
-276 J/kg
Mixed-layer LCL
1476 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
97 m²/s²
0-3 km storm-relative helicity
137 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

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.

Nearby

Severe Thunderstorm Watches in Nebraska, 2001Every severe thunderstorm watch in 2001

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.