Alert archive / Idaho / Mesoscale Discussions in 2011

Mesoscale Discussion 1363

June 22, 201131 counties in Idaho; 4 counties in Oregon

The Storm Prediction Center issued this mesoscale discussion at Jun 22, 2011, 5:39 PM MDT for 31 counties in Idaho; 4 counties in Oregon. It was in force for 96 min.

The area

The outline as issued.

The facts

Issued
Jun 22, 2011, 5:39 PM MDT (23:39 UTC)
Expired
Jun 22, 2011, 7:15 PM MDT
In force
96 min
Issued by
the Storm Prediction Center
All 35 counties

Ada County, ID, Adams County, ID, Bannock County, ID, Bingham County, ID, Blaine County, ID, Boise County, ID, Bonneville County, ID, Butte County, ID, Camas County, ID, Canyon County, ID, Cassia County, ID, Clark County, ID, Custer County, ID, Elmore County, ID, Fremont County, ID, Gem County, ID, Gooding County, ID, Idaho County, ID, Jefferson County, ID, Jerome County, ID, Lewis County, ID, Lincoln County, ID, Madison County, ID, Minidoka County, ID, Owyhee County, ID, Payette County, ID, Power County, ID, Teton County, ID, Twin Falls County, ID, Valley County, ID, Washington County, ID, Baker County, OR, Malheur County, OR, Union County, OR, Wallowa County, OR

The radar

The Boise radar (KCBX), 158 km from the middle of the area, began a volume at 23:39 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

Spokane, WA (KOTX), launched 12:00Z, 11.7 hours before the alert went out and 420 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, Spokane, WA at 12:00Z on 2011-06-22Temperature 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 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Spokane, WA at 12:00Z on 2011-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 75 square meters per square second.193958Sfc1 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
1916 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
75 m²/s²
0-3 km storm-relative helicity
126 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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Nearby

Mesoscale Discussions in Idaho, 2011Mesoscale Discussions in Oregon, 2011Every mesoscale discussion in 2011

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.