Alert archive / Montana / Special Weather Statements in 2016

Special Weather Statement, NWS Great Falls, MT

June 18, 2016Glacier County, Montana

NWS Great Falls, MT issued this special weather statement at Jun 18, 2016, 2:08 PM MDT for Glacier County, Montana. It was in force for 52 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 18, 2016, 2:08 PM MDT (20:08 UTC)
Expired: Jun 18, 2016, 3:00 PM MDT
In force: 52 min
Issued by: NWS Great Falls, MT

County Glacier County, MT

The radar

The Great Falls radar (KTFX), 163 km from the middle of the area, began a volume at 20:12 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, 8.1 hours before the alert went out and 211 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1982 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 108 m²/s²
0-3 km storm-relative helicity: 187 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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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Great Falls, MT wrote its last area forecast discussion before this special weather statement went out at Jun 18, 11:07 AM MDT, 3 hours 1 minute earlier.

Area forecast discussion, Jun 18, 11:07 AM MDT, 3 hours 1 minute before

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In the hours before

Special weather statement, Jun 18, 12:58 PM MDT, 1 hour 10 minutes before

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Special weather statement, Jun 18, 1:36 PM MDT, 32 minutes before

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Special weather statement, Jun 18, 2:08 PM MDT, 0 minutes before

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The office that day

Everything else NWS Great Falls, MT issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 18, 12:58 PM MDT	Special Weather Statement	TFX	Glacier	47 min
Jun 18, 1:36 PM MDT	Special Weather Statement	TFX	Toole	24 min
Jun 18, 2:29 PM MDT	Special Weather Statement	TFX	Glacier, Pondera	46 min
Jun 18, 3:51 PM MDT	Special Weather Statement	TFX	Cascade	24 min
Jun 18, 4:33 PM MDT	Special Weather Statement	TFX	Teton	42 min
Jun 18, 4:41 PM MDT	Special Weather Statement	TFX	Chouteau	34 min
Jun 18, 5:13 PM MDT	Special Weather Statement	TFX	Hill	32 min
Jun 18, 5:36 PM MDT	Severe Thunderstorm Warning	TFX	Blaine, Chouteau, Hill	24 min
Jun 18, 5:54 PM MDT	Tornado Warning	TFX	Blaine	36 min

Nearby

Special Weather Statements in Montana, 2016 Every special weather statement 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.