Alert archive / Idaho / Mesoscale Discussions in 2007

Mesoscale Discussion 1847

August 22, 20078 counties in Idaho; Box Elder County, Cache County, Rich County, Utah; 8 counties in Wyoming

The Storm Prediction Center issued this mesoscale discussion at Aug 22, 2007, 12:25 PM MDT for 8 counties in Idaho; Box Elder County, Cache County, Rich County, Utah; 8 counties in Wyoming. It was in force for 65 min.

The area

The outline as issued.

The facts

Issued: Aug 22, 2007, 12:25 PM MDT (18:25 UTC)
Expired: Aug 22, 2007, 1:30 PM MDT
In force: 65 min
Issued by: the Storm Prediction Center

Counties Bannock County, ID, Bear Lake County, ID, Bonneville County, ID, Caribou County, ID, Cassia County, ID, Franklin County, ID, Oneida County, ID, Teton County, ID, Box Elder County, UT, Cache County, UT, Rich County, UT, Big Horn County, WY, Fremont County, WY, Hot Springs County, WY, Lincoln County, WY, Park County, WY, Sublette County, WY, Teton County, WY, Washakie County, WY

The radar

The Pocatello radar (KSFX), 154 km from the middle of the area, began a volume at 18:26 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, 6.4 hours before the alert went out and 195 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: 1955 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 212 m²/s²
0-3 km storm-relative helicity: 283 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
Aug 22, 4:31 PM MDT	Mesoscale Discussion	SPC	Albany, Goshen, Laramie, Platte	89 min

Nearby

Mesoscale Discussions in Idaho, 2007 Mesoscale Discussions in Wyoming, 2007 Mesoscale Discussions in Utah, 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.