Alert archive / Utah / Mesoscale Discussions in 2007

Mesoscale Discussion 1507

July 17, 20079 counties in Idaho; Elko County, Eureka County, White Pine County, Nevada; 10 counties in Utah

The Storm Prediction Center issued this mesoscale discussion at Jul 17, 2007, 12:01 PM MDT for 9 counties in Idaho; Elko County, Eureka County, White Pine County, Nevada; 10 counties in Utah. It was in force for 59 min.

The area

The outline as issued.

The facts

Issued: Jul 17, 2007, 12:01 PM MDT (18:01 UTC)
Expired: Jul 17, 2007, 1:00 PM MDT
In force: 59 min
Issued by: the Storm Prediction Center

All 22 counties

Bannock County, ID, Cassia County, ID, Gooding County, ID, Jerome County, ID, Lincoln County, ID, Minidoka County, ID, Oneida County, ID, Power County, ID, Twin Falls County, ID, Elko County, NV, Eureka County, NV, White Pine County, NV, Beaver County, UT, Box Elder County, UT, Davis County, UT, Iron County, UT, Juab County, UT, Millard County, UT, Piute County, UT, Salt Lake County, UT, Tooele County, UT, Weber County, UT

The radar

The Salt Lake City radar (KMTX), 184 km from the middle of the area, began a volume at 18:04 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

Elko, NV (KLKN), launched 12:00Z, 6.0 hours before the alert went out and 31 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: 195 J/kg
Mixed-layer CIN: -279 J/kg
Mixed-layer LCL: 1920 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 191 m²/s²
0-3 km storm-relative helicity: 138 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
Jul 17, 3:10 PM MDT	Mesoscale Discussion	SPC	Clearwater, Idaho, Lemhi, Shoshone	65 min

Nearby

Mesoscale Discussions in Utah, 2007 Mesoscale Discussions in Idaho, 2007 Mesoscale Discussions in Nevada, 2007 Every mesoscale discussion in 2007

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.