Alert archive / Colorado / Mesoscale Discussions in 2019

Mesoscale Discussion 556

May 6, 201911 counties in Colorado

The Storm Prediction Center issued this mesoscale discussion at May 6, 2019, 1:15 PM MDT for 11 counties in Colorado. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
May 6, 2019, 1:15 PM MDT (19:15 UTC)
Expired
May 6, 2019, 3:15 PM MDT
In force
2 hr
Issued by
the Storm Prediction Center
Chance of a watch
40%

Counties Baca County, CO, Bent County, CO, Cheyenne County, CO, Crowley County, CO, El Paso County, CO, Kiowa County, CO, Las Animas County, CO, Lincoln County, CO, Otero County, CO, Prowers County, CO, Pueblo County, CO

The radar

The Pueblo radar (KPUX), 85 km from the middle of the area, began a volume at 19:18 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 (KDEN), launched 12:00Z, 7.3 hours before the alert went out and 199 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 2019-05-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2019-05-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 29 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1072 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
29 m²/s²
0-3 km storm-relative helicity
118 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 6, 12:50 PM MDTMesoscale DiscussionSPCAdams, Arapahoe, Broomfield, Denver, Elbert, Weld115 min
May 6, 2:00 PM MDTSevere Thunderstorm WatchSPCBaca, Bent, Cheyenne, Crowley, Elbert, El Paso and 6 more7 hr
May 6, 4:48 PM MDTMesoscale DiscussionSPCBaca, Bent, Crowley, Elbert, Kiowa, Otero and 1 more87 min

Nearby

Mesoscale Discussions in Colorado, 2019Every mesoscale discussion in 2019

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.