Alert archive / Idaho / Mesoscale Discussions in 2004

Mesoscale Discussion 1778

July 26, 200419 counties in Idaho; Box Elder County, Cache County, Rich County, Utah; Lincoln County, Teton County, Wyoming

The Storm Prediction Center issued this mesoscale discussion at Jul 26, 2004, 1:16 PM MDT for 19 counties in Idaho; Box Elder County, Cache County, Rich County, Utah; Lincoln County, Teton County, Wyoming. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Jul 26, 2004, 1:16 PM MDT (19:16 UTC)
Expired
Jul 26, 2004, 3:45 PM MDT
In force
2 hr
Issued by
the Storm Prediction Center
All 24 counties

Bannock County, ID, Bear Lake County, ID, Bingham County, ID, Blaine County, ID, Bonneville County, ID, Butte County, ID, Caribou County, ID, Cassia County, ID, Clark County, ID, Franklin County, ID, Fremont County, ID, Jefferson County, ID, Jerome County, ID, Lincoln County, ID, Madison County, ID, Minidoka County, ID, Oneida County, ID, Power County, ID, Teton County, ID, Box Elder County, UT, Cache County, UT, Rich County, UT, Lincoln County, WY, Teton County, WY

The nearest sounding before it

Salt Lake City I, UT (KSLC), launched 12:00Z, 7.3 hours before the alert went out and 245 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, Salt Lake City I, UT at 12:00Z on 2004-07-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 66 joules per kilogram.LCLLFCEL10008507005003002001001 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, Salt Lake City I, UT at 12:00Z on 2004-07-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 14 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
66 J/kg
Mixed-layer CIN
-364 J/kg
Mixed-layer LCL
2620 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
14 m²/s²
0-3 km storm-relative helicity
60 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
Jul 26, 5:08 PM MDTMesoscale DiscussionSPCCrook2 hr

Nearby

Mesoscale Discussions in Idaho, 2004Mesoscale Discussions in Utah, 2004Mesoscale Discussions in Wyoming, 2004Every mesoscale discussion in 2004

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.