Alert archive / Colorado / Mesoscale Discussions in 2017

Mesoscale Discussion 589

April 29, 20174 states

The Storm Prediction Center issued this mesoscale discussion at Apr 29, 2017, 3:04 AM MDT for 4 states. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Apr 29, 2017, 3:04 AM MDT (09:04 UTC)
Expired: Apr 29, 2017, 9:00 AM MDT
In force: 6 hr
Issued by: the Storm Prediction Center

Counties Baca County, CO, Bent County, CO, Crowley County, CO, Huerfano County, CO, Las Animas County, CO, Otero County, CO, Prowers County, CO, Pueblo County, CO, Morton County, KS, Stanton County, KS, Union County, NM, Cimarron County, OK

The radar

The Pueblo radar (KPUX), 143 km from the middle of the area, began a volume at 09:04 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

Amarillo Airport, TX (KAMA), launched 00:00Z, 9.1 hours before the alert went out and 285 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1009 m above ground
0-6 km bulk shear: 88 kt
0-1 km storm-relative helicity: 485 m²/s²
0-3 km storm-relative helicity: 853 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.

Issued	Product	Office	Counties	Lasted
Apr 28, 9:01 PM MDT	Severe Thunderstorm Watch	SPC	Adair, Cherokee, Craig, Creek, Delaware, Haskell and 17 more	9 hr
Apr 28, 9:18 PM MDT	Mesoscale Discussion	SPC	Beckham, Blaine, Caddo, Canadian, Cleveland, Comanche and 18 more	117 min
Apr 28, 9:35 PM MDT	Severe Thunderstorm Watch	SPC	Beckham, Blaine, Caddo, Canadian, Cleveland, Comanche and 21 more	8 hr
Apr 29, 1:45 AM MDT	Mesoscale Discussion	SPC	Beckham, Blaine, Caddo, Canadian, Cleveland, Comanche and 21 more	2 hr
Apr 29, 2:39 AM MDT	Mesoscale Discussion	SPC	Adair, Cherokee, Craig, Creek, Delaware, Mayes and 7 more	96 min
Apr 29, 12:11 PM MDT	Mesoscale Discussion	SPC	Adair, Haskell, Latimer, LeFlore, McCurtain, Pushmataha and 1 more	2 hr
Apr 29, 1:10 PM MDT	Mesoscale Discussion	SPC	Bryan, Marshall	2 hr
Apr 29, 4:36 PM MDT	Severe Thunderstorm Watch	SPC	Adair, Choctaw, Haskell, Latimer, LeFlore, Pushmataha and 1 more	4 hr

Nearby

Mesoscale Discussions in Colorado, 2017 Mesoscale Discussions in Kansas, 2017 Mesoscale Discussions in New Mexico, 2017 Every mesoscale discussion in 2017

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.