Alert archive / Nebraska / Mesoscale Discussions in 2003

Mesoscale Discussion 1595

July 3, 20034 counties in Colorado; 4 counties in Kansas; 17 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Jul 3, 2003, 6:36 PM MDT for 4 counties in Colorado; 4 counties in Kansas; 17 counties in Nebraska. It was in force for 54 min.

The area

The outline as issued.

The facts

Issued
Jul 3, 2003, 6:36 PM MDT (00:36 UTC)
Expired
Jul 3, 2003, 7:30 PM MDT
In force
54 min
Issued by
the Storm Prediction Center
All 25 counties

Kit Carson County, CO, Phillips County, CO, Sedgwick County, CO, Yuma County, CO, Cheyenne County, KS, Rawlins County, KS, Sherman County, KS, Thomas County, KS, Arthur County, NE, Chase County, NE, Cherry County, NE, Deuel County, NE, Dundy 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, Perkins County, NE, Sheridan County, NE, Thomas County, NE

The radar

The North Platte radar (KLNX), 164 km from the middle of the area, began a volume at 00:37 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.

The watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.6 hours before the alert went out and 111 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 2003-07-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 707 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 2003-07-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 126 square meters per square second.193958Sfc1 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
707 J/kg
Mixed-layer CIN
-238 J/kg
Mixed-layer LCL
2462 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
126 m²/s²
0-3 km storm-relative helicity
322 m²/s²
Significant tornado parameter
0.0
Supercell composite
4.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 3, 7:11 PM MDTMesoscale DiscussionSPCDecatur, Osborne, Phillips, Smith94 min
Jul 4, 4:12 PM MDTMesoscale DiscussionSPCDecatur, Graham, Jewell, Norton, Osborne, Phillips and 5 more93 min
Jul 3, 8:40 PM MDTSevere Thunderstorm WatchSPCAntelope, Blaine, Boyd, Brown, Burt, Cedar and 16 more6 hr
Jul 3, 10:23 PM MDTMesoscale DiscussionSPCAntelope, Blaine, Boyd, Brown, Burt, Cedar and 16 more97 min
Jul 4, 1:51 PM MDTMesoscale DiscussionSPCBanner, Box Butte, Dawes, Morrill, Scotts Bluff, Sheridan and 1 more114 min
Jul 4, 4:55 PM MDTMesoscale DiscussionSPCAntelope, Blaine, Brown, Cedar, Cherry, Garfield and 6 more95 min

Nearby

Mesoscale Discussions in Nebraska, 2003Mesoscale Discussions in Colorado, 2003Mesoscale Discussions in Kansas, 2003Every mesoscale discussion in 2003

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.