Alert archive / Nebraska / Severe Thunderstorm Watches in 2005

Severe Thunderstorm Watch 548

June 28, 2005Phillips County, Sedgwick County, Yuma County, Colorado; 19 counties in Nebraska

The Storm Prediction Center issued this severe thunderstorm watch at Jun 28, 2005, 6:10 PM MDT for Phillips County, Sedgwick County, Yuma County, Colorado; 19 counties in Nebraska. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jun 28, 2005, 6:10 PM MDT (00:10 UTC)
Expired
Jun 28, 2005, 11:00 PM MDT
In force
5 hr
Issued by
the Storm Prediction Center
All 22 counties

Phillips County, CO, Sedgwick County, CO, Yuma County, CO, Arthur County, NE, Chase County, NE, Cheyenne County, NE, Deuel County, NE, Dundy County, NE, Frontier County, NE, Garden County, NE, Grant County, NE, Hayes County, NE, Hitchcock County, NE, Hooker County, NE, Keith County, NE, Lincoln County, NE, Logan County, NE, McPherson County, NE, Morrill County, NE, Perkins County, NE, Red Willow County, NE, Thomas County, NE

The radar

The North Platte radar (KLNX), 107 km from the middle of the area, began a volume at 00:12 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.

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.2 hours before the alert went out and 59 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 00:00Z on 2005-06-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2893 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 00:00Z on 2005-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 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
2893 J/kg
Mixed-layer CIN
-128 J/kg
Mixed-layer LCL
1366 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
72 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.5

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 28, 6:44 PM MDTMesoscale DiscussionSPCArchuleta, Chaffee, Delta, Dolores, Eagle, Garfield and 15 more61 min
Jun 28, 9:34 PM MDTMesoscale DiscussionSPCPhillips, Sedgwick, Yuma86 min
Jun 28, 6:15 PM MDTSevere Thunderstorm WatchSPCBlaine, Boyd, Brown, Garfield, Holt, Keya Paha and 4 more5 hr
Jun 28, 9:15 PM MDTMesoscale DiscussionSPCCherry, Keya Paha, Sheridan60 min
Jun 29, 12:30 AM MDTMesoscale DiscussionSPCBrown, Cherry, Keya Paha, Rock90 min
Jun 29, 1:45 PM MDTMesoscale DiscussionSPCGage, Jefferson, Johnson, Lancaster, Nemaha, Otoe and 3 more2 hr
Jun 29, 3:50 PM MDTSevere Thunderstorm WatchSPCBurt, Cass, Dodge, Douglas, Gage, Jefferson and 10 more6 hr
Jun 29, 5:50 PM MDTMesoscale DiscussionSPCCass, Douglas, Gage, Jefferson, Johnson, Lancaster and 10 more85 min

Nearby

Severe Thunderstorm Watches in Nebraska, 2005Severe Thunderstorm Watches in Colorado, 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.