Alert archive / Wyoming / Mesoscale Discussions in 2014

Mesoscale Discussion 503

May 6, 201411 counties in Idaho; 9 counties in Utah; 15 counties in Wyoming

The Storm Prediction Center issued this mesoscale discussion at May 6, 2014, 1:48 PM MDT for 11 counties in Idaho; 9 counties in Utah; 15 counties in Wyoming. It was in force for 117 min.

The area

The outline as issued.

The facts

Issued: May 6, 2014, 1:48 PM MDT (19:48 UTC)
Expired: May 6, 2014, 3:45 PM MDT
In force: 117 min
Issued by: the Storm Prediction Center
Chance of a watch: 20%

All 35 counties

Bannock County, ID, Bear Lake County, ID, Bingham County, ID, Bonneville County, ID, Caribou County, ID, Franklin County, ID, Fremont County, ID, Madison County, ID, Oneida County, ID, Power County, ID, Teton County, ID, Box Elder County, UT, Cache County, UT, Davis County, UT, Juab County, UT, Morgan County, UT, Rich County, UT, Salt Lake County, UT, Tooele County, UT, Weber County, UT, Big Horn County, WY, Campbell County, WY, Converse County, WY, Fremont County, WY, Hot Springs County, WY, Johnson County, WY, Lincoln County, WY, Natrona County, WY, Niobrara County, WY, Park County, WY, Sheridan County, WY, Sublette County, WY, Teton County, WY, Washakie County, WY, Weston County, WY

The radar

The Riverton/Lander radar (KRIW), 107 km from the middle of the area, began a volume at 19:47 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

Riverton, WY (KRIW), launched 12:00Z, 7.8 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-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: 1546 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 167 m²/s²
0-3 km storm-relative helicity: 277 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.

Issued	Product	Office	Counties	Lasted
May 5, 8:29 PM MDT	Mesoscale Discussion	SPC	Crook	61 min

Nearby

Mesoscale Discussions in Wyoming, 2014 Mesoscale Discussions in Idaho, 2014 Mesoscale Discussions in Utah, 2014 Every mesoscale discussion in 2014

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.