Alert archive / Montana / Mesoscale Discussions in 2016

Mesoscale Discussion 1044

June 24, 201610 counties in Montana

The Storm Prediction Center issued this mesoscale discussion at Jun 24, 2016, 12:52 PM MDT for 10 counties in Montana. It was in force for 83 min.

The area

The outline as issued.

The facts

Issued
Jun 24, 2016, 12:52 PM MDT (18:52 UTC)
Expired
Jun 24, 2016, 2:15 PM MDT
In force
83 min
Issued by
the Storm Prediction Center
Chance of a watch
20%

Counties Broadwater County, MT, Cascade County, MT, Chouteau County, MT, Fergus County, MT, Golden Valley County, MT, Jefferson County, MT, Judith Basin County, MT, Meagher County, MT, Sweet Grass County, MT, Wheatland County, MT

The radar

The Great Falls radar (KTFX), 115 km from the middle of the area, began a volume at 18:51 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

Great_falls, MT (KTFX), launched 12:00Z, 6.9 hours before the alert went out and 89 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, Great_falls, MT at 12:00Z on 2016-06-24Temperature 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, Great_falls, MT at 12:00Z on 2016-06-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -16 square meters per square second.1939587897Sfc1 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
1853 m above ground
0-6 km bulk shear
67 kt
0-1 km storm-relative helicity
-16 m²/s²
0-3 km storm-relative helicity
157 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 24, 3:51 PM MDTMesoscale DiscussionSPCBlaine, Daniels, Dawson, Fergus, Garfield, Golden Valley and 15 more84 min
Jun 24, 4:16 PM MDTSevere Thunderstorm WatchSPCCuster, Daniels, Dawson, Fallon, Garfield, Golden Valley and 11 more8 hr

Nearby

Mesoscale Discussions in Montana, 2016Every mesoscale discussion in 2016

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.