Alert archive / Montana / Mesoscale Discussions in 2003

Mesoscale Discussion 1307

June 10, 20035 counties in Idaho; 15 counties in Montana; Pend Oreille County, Washington

The Storm Prediction Center issued this mesoscale discussion at Jun 10, 2003, 5:00 PM PDT for 5 counties in Idaho; 15 counties in Montana; Pend Oreille County, Washington. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Jun 10, 2003, 5:00 PM PDT (00:00 UTC)
Expired
Jun 10, 2003, 7:00 PM PDT
In force
2 hr
Issued by
the Storm Prediction Center
All 21 counties

Bonner County, ID, Boundary County, ID, Clearwater County, ID, Kootenai County, ID, Shoshone County, ID, Deer Lodge County, MT, Flathead County, MT, Glacier County, MT, Granite County, MT, Jefferson County, MT, Lake County, MT, Lewis and Clark County, MT, Lincoln County, MT, Mineral County, MT, Missoula County, MT, Pondera County, MT, Powell County, MT, Ravalli County, MT, Sanders County, MT, Teton County, MT, Pend Oreille County, WA

The nearest sounding before it

Spokane, WA (KOTX), launched 00:00Z, 0.0 hours before the alert went out and 106 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 00:00Z on 2003-06-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 388 joules per kilogram.LCLEL10008507005003002001001 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 00:00Z on 2003-06-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 15 square meters per square second.1939Sfc1 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
388 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
2127 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
15 m²/s²
0-3 km storm-relative helicity
41 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
Jun 10, 7:27 PM PDTMesoscale DiscussionSPCBlaine, Chouteau, Fergus, Golden Valley, Hill, Judith Basin and 9 more2 hr
Jun 11, 10:30 AM PDTMesoscale DiscussionSPCCarter, Custer, Dawson, Fallon, Garfield, McCone and 7 more2 hr

Nearby

Mesoscale Discussions in Montana, 2003Mesoscale Discussions in Idaho, 2003Mesoscale Discussions in Washington, 2003Every mesoscale discussion in 2003

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.