Alert archive / Nebraska / Mesoscale Discussions in 2004

Mesoscale Discussion 1599

July 10, 20044 counties in Colorado; 8 counties in Nebraska; Goshen County, Laramie County, Wyoming

The Storm Prediction Center issued this mesoscale discussion at Jul 10, 2004, 2:53 PM MDT for 4 counties in Colorado; 8 counties in Nebraska; Goshen County, Laramie County, Wyoming. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Jul 10, 2004, 2:53 PM MDT (20:53 UTC)
Expired
Jul 10, 2004, 5:00 PM MDT
In force
2 hr
Issued by
the Storm Prediction Center

Counties Adams County, CO, Logan County, CO, Morgan County, CO, Weld County, CO, Banner County, NE, Box Butte County, NE, Cheyenne County, NE, Dawes County, NE, Kimball County, NE, Morrill County, NE, Scotts Bluff County, NE, Sioux County, NE, Goshen County, WY, Laramie County, WY

The radar

The Cheyenne radar (KCYS), 85 km from the middle of the area, began a volume at 20:55 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 nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 8.9 hours before the alert went out and 187 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 12:00Z on 2004-07-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3 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 12:00Z on 2004-07-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 2 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
3 J/kg
Mixed-layer CIN
-197 J/kg
Mixed-layer LCL
2145 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
2 m²/s²
0-3 km storm-relative helicity
112 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 10, 4:05 PM MDTMesoscale DiscussionSPCCass, Johnson, Nemaha, Otoe, Richardson85 min

Nearby

Mesoscale Discussions in Nebraska, 2004Mesoscale Discussions in Colorado, 2004Mesoscale Discussions in Wyoming, 2004Every mesoscale discussion in 2004

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.