Alert archive / Idaho / Mesoscale Discussions in 2003

Mesoscale Discussion 1150

May 30, 200318 counties in Idaho; Beaverhead County, Montana

The Storm Prediction Center issued this mesoscale discussion at May 30, 2003, 11:46 AM MDT for 18 counties in Idaho; Beaverhead County, Montana. It was in force for 119 min.

The area

The outline as issued.

The facts

Issued: May 30, 2003, 11:46 AM MDT (17:46 UTC)
Expired: May 30, 2003, 1:45 PM MDT
In force: 119 min
Issued by: the Storm Prediction Center

Counties Bannock County, ID, Bingham County, ID, Blaine County, ID, Butte County, ID, Camas County, ID, Cassia County, ID, Clark County, ID, Custer County, ID, Elmore County, ID, Gooding County, ID, Jefferson County, ID, Jerome County, ID, Lemhi County, ID, Lincoln County, ID, Minidoka County, ID, Owyhee County, ID, Power County, ID, Twin Falls County, ID, Beaverhead County, MT

The radar

The Boise radar (KCBX), 107 km from the middle of the area, began a volume at 17:48 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Severe Thunderstorm Watch 441May 30, 12:35 PM MDT

The nearest sounding before it

Boise Airport, ID (KBOI), launched 12:00Z, 5.8 hours before the alert went out and 111 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: 1 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1493 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 80 m²/s²
0-3 km storm-relative helicity: 382 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
May 29, 8:25 PM MDT	Mesoscale Discussion	SPC	Bonneville, Caribou, Fremont, Madison, Teton	65 min
May 30, 8:29 AM MDT	Mesoscale Discussion	SPC	Bannock, Bingham, Blaine, Bonneville, Butte, Camas and 13 more	2 hr
May 30, 9:00 AM MDT	Severe Thunderstorm Watch	SPC	Ada, Blaine, Boise, Camas, Canyon, Cassia and 10 more	5 hr
May 30, 12:35 PM MDT	Severe Thunderstorm Watch	SPC	Bingham, Blaine, Boise, Butte, Camas, Cassia and 12 more	6 hr
May 30, 1:06 PM MDT	Mesoscale Discussion	SPC	Bannock, Bear Lake, Bingham, Blaine, Butte, Camas and 10 more	2 hr
May 30, 2:18 PM MDT	Mesoscale Discussion	SPC	Bingham, Butte, Cassia, Jefferson, Jerome, Minidoka and 2 more	117 min
May 30, 5:28 PM MDT	Mesoscale Discussion	SPC	Ada, Bingham, Blaine, Boise, Butte, Camas and 13 more	92 min

Nearby

Mesoscale Discussions in Idaho, 2003 Mesoscale Discussions in Montana, 2003 Every 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; radar from the NEXRAD Level II archive.