Alert archive / Colorado / Mesoscale Discussions in 2003

Mesoscale Discussion 1479

June 23, 20037 counties in Colorado; Cheyenne County, Deuel County, Kimball County, Nebraska

The Storm Prediction Center issued this mesoscale discussion at Jun 23, 2003, 7:34 PM MDT for 7 counties in Colorado; Cheyenne County, Deuel County, Kimball County, Nebraska. It was in force for 86 min.

The area

The outline as issued.

The facts

Issued
Jun 23, 2003, 7:34 PM MDT (01:34 UTC)
Expired
Jun 23, 2003, 9:00 PM MDT
In force
86 min
Issued by
the Storm Prediction Center

Counties Logan County, CO, Morgan County, CO, Phillips County, CO, Sedgwick County, CO, Washington County, CO, Weld County, CO, Yuma County, CO, Cheyenne County, NE, Deuel County, NE, Kimball County, NE

The radar

The Denver radar (KFTG), 161 km from the middle of the area, began a volume at 01:38 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

Denver, CO (KDNR), launched 00:00Z, 1.6 hours before the alert went out and 78 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, Denver, CO at 00:00Z on 2003-06-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1968 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 00:00Z on 2003-06-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 113 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
1968 J/kg
Mixed-layer CIN
-9 J/kg
Mixed-layer LCL
1522 m above ground
0-6 km bulk shear
74 kt
0-1 km storm-relative helicity
113 m²/s²
0-3 km storm-relative helicity
579 m²/s²
Significant tornado parameter
3.1
Supercell composite
21.2

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
Jun 23, 8:10 PM MDTTornado WatchSPCLogan, Morgan, Phillips, Sedgwick4 hr
Jun 23, 11:50 PM MDTSevere Thunderstorm WatchSPCLogan, Phillips, Sedgwick3 hr
Jun 24, 4:48 PM MDTMesoscale DiscussionSPCBaca, Prowers117 min
Jun 23, 7:17 PM MDTMesoscale DiscussionSPCAdams, Antelope, Boone, Buffalo, Butler, Clay and 37 more58 min
Jun 23, 7:20 PM MDTTornado WatchSPCAdams, Buffalo, Clay, Fillmore, Franklin, Furnas and 11 more3 hr
Jun 23, 7:55 PM MDTTornado WatchSPCBurt, Cass, Douglas, Gage, Jefferson, Johnson and 11 more4 hr
Jun 23, 8:10 PM MDTMesoscale DiscussionSPCBoyd65 min
Jun 23, 9:38 PM MDTMesoscale DiscussionSPCCedar, Dakota, Dixon, Pierce, Wayne67 min
Jun 23, 9:50 PM MDTTornado WatchSPCAdams, Antelope, Boone, Buffalo, Butler, Cedar and 26 more5 hr
Jun 23, 9:50 PM MDTTornado WatchSPCArthur, Blaine, Chase, Custer, Dawson, Frontier and 10 more5 hr
Jun 23, 10:08 PM MDTMesoscale DiscussionSPCBanner, Box Butte, Cheyenne, Garden, Grant, Kimball and 3 more67 min
Jun 23, 10:45 PM MDTSevere Thunderstorm WatchSPCBoyd, Brown, Cherry, Grant, Holt, Hooker and 3 more6 hr
Jun 24, 12:52 AM MDTMesoscale DiscussionSPCAntelope, Blaine, Cedar, Dakota, Dixon, Garfield and 9 more53 min
Jun 24, 1:44 AM MDTMesoscale DiscussionSPCBoyd, Brown, Cherry, Grant, Holt, Hooker and 3 more2 hr
Jun 24, 10:43 AM MDTMesoscale DiscussionSPCCass, Douglas, Johnson, Nemaha, Otoe, Richardson and 2 more2 hr
Jun 24, 12:29 PM MDTMesoscale DiscussionSPCAntelope, Blaine, Boone, Boyd, Brown, Buffalo and 22 more3 hr
Jun 24, 1:15 PM MDTTornado WatchSPCAntelope, Blaine, Boyd, Brown, Cedar, Cherry and 18 more8 hr
Jun 24, 2:47 PM MDTMesoscale DiscussionSPCChase, Dundy, Hayes, Hitchcock88 min
Jun 24, 2:55 PM MDTSevere Thunderstorm WatchSPCChase, Dawson, Dundy, Frontier, Furnas, Gosper and 3 more6 hr
Jun 24, 2:56 PM MDTMesoscale DiscussionSPCNemaha, Richardson64 min
Jun 24, 4:59 PM MDTMesoscale DiscussionSPCAntelope, Blaine, Boyd, Brown, Cedar, Dixon and 11 more61 min
Jun 24, 5:30 PM MDTMesoscale DiscussionSPCBuffalo, Dawson, Dundy, Frontier, Furnas, Gosper and 7 more2 hr

Nearby

Mesoscale Discussions in Colorado, 2003Mesoscale Discussions in Nebraska, 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.