Alert archive / Utah / Mesoscale Discussions in 2008

Mesoscale Discussion 2191

August 31, 2008Bear Lake County, Franklin County, Oneida County, Idaho; White Pine County, Nevada; 8 counties in Utah

The Storm Prediction Center issued this mesoscale discussion at Aug 31, 2008, 12:04 PM MDT for Bear Lake County, Franklin County, Oneida County, Idaho; White Pine County, Nevada; 8 counties in Utah. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Aug 31, 2008, 12:04 PM MDT (18:04 UTC)
Expired
Aug 31, 2008, 2:30 PM MDT
In force
2 hr
Issued by
the Storm Prediction Center

Counties Bear Lake County, ID, Franklin County, ID, Oneida County, ID, White Pine County, NV, Box Elder County, UT, Cache County, UT, Davis County, UT, Juab County, UT, Morgan County, UT, Salt Lake County, UT, Tooele County, UT, Weber County, UT

The watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Elko, NV (KLKN), launched 12:00Z, 6.1 hours before the alert went out and 89 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, Elko, NV at 12:00Z on 2008-08-31Temperature 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, Elko, NV at 12:00Z on 2008-08-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 105 square meters per square second.1939587897Sfc1 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
2535 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
105 m²/s²
0-3 km storm-relative helicity
152 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
Aug 31, 1:19 PM MDTSevere Thunderstorm WatchSPCBannock, Bear Lake, Bingham, Bonneville, Caribou, Cassia and 3 more8 hr
Aug 31, 3:58 PM MDTMesoscale DiscussionSPCBear Lake, Caribou, Franklin92 min

Nearby

Mesoscale Discussions in Utah, 2008Mesoscale Discussions in Idaho, 2008Mesoscale Discussions in Nevada, 2008Every mesoscale discussion in 2008

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.