Alert archive / Montana / Special Weather Statements in 2017

Special Weather Statement, NWS Great Falls, MT

July 9, 2017Deer Lodge County, Montana

NWS Great Falls, MT issued this special weather statement at Jul 9, 2017, 10:13 PM MDT for Deer Lodge County, Montana. It was in force for 32 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: Jul 9, 2017, 10:13 PM MDT (04:13 UTC)
Expired: Jul 9, 2017, 10:45 PM MDT
In force: 32 min
Issued by: NWS Great Falls, MT

County Deer Lodge County, MT

The radar

The Missoula radar (KMSX), 153 km from the middle of the area, began a volume at 04:13 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 00:00Z, 4.2 hours before the alert went out and 298 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: 56 J/kg
Mixed-layer CIN: -199 J/kg
Mixed-layer LCL: 3424 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 104 m²/s²
0-3 km storm-relative helicity: 240 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 Jul 9, 9:20 PM MDT, 53 minutes earlier.

Area forecast discussion, Jul 9, 9:20 PM MDT, 53 minutes before

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In the hours before

Special weather statement, Jul 9, 7:51 PM MDT, 2 hours 22 minutes before

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Special weather statement, Jul 9, 8:03 PM MDT, 2 hours 10 minutes before

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Special weather statement, Jul 9, 8:10 PM MDT, 2 hours 3 minutes before

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Special weather statement, Jul 9, 9:00 PM MDT, 1 hour 13 minutes before

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Special weather statement, Jul 9, 9:39 PM MDT, 34 minutes before

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Special weather statement, Jul 9, 10:13 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
Jul 9, 6:00 PM MDT	Special Weather Statement	TFX	Madison	45 min
Jul 9, 6:02 PM MDT	Special Weather Statement	TFX	Beaverhead	43 min
Jul 9, 6:06 PM MDT	Special Weather Statement	TFX	Fergus	24 min
Jul 9, 6:11 PM MDT	Special Weather Statement	TFX	Gallatin	34 min
Jul 9, 6:15 PM MDT	Special Weather Statement	TFX	Broadwater	45 min
Jul 9, 6:31 PM MDT	Special Weather Statement	TFX	Fergus	29 min
Jul 9, 6:38 PM MDT	Severe Thunderstorm Warning	TFX	Broadwater, Jefferson, Lewis and Clark	37 min
Jul 9, 6:49 PM MDT	Special Weather Statement	TFX	Beaverhead	26 min
Jul 9, 6:53 PM MDT	Special Weather Statement	TFX	Judith Basin	37 min
Jul 9, 7:02 PM MDT	Special Weather Statement	TFX	Cascade, Lewis and Clark	28 min
Jul 9, 7:15 PM MDT	Special Weather Statement	TFX	Broadwater, Meagher	45 min
Jul 9, 7:34 PM MDT	Special Weather Statement	TFX	Judith Basin	26 min
Jul 9, 7:37 PM MDT	Special Weather Statement	TFX	Cascade	23 min
Jul 9, 7:51 PM MDT	Special Weather Statement	TFX	Deer Lodge	24 min
Jul 9, 8:03 PM MDT	Special Weather Statement	TFX	Cascade	27 min
Jul 9, 8:10 PM MDT	Special Weather Statement	TFX	Lewis and Clark	35 min
Jul 9, 9:00 PM MDT	Special Weather Statement	TFX	Cascade	30 min
Jul 9, 9:39 PM MDT	Special Weather Statement	TFX	Beaverhead	21 min
Jul 9, 10:46 PM MDT	Special Weather Statement	TFX	Deer Lodge	29 min
Jul 10, 3:53 AM MDT	Red Flag Warning	TFX	Blaine, Chouteau, Fergus, Hill, Phillips	17 hr
Jul 10, 11:42 AM MDT	Special Weather Statement	TFX	Broadwater	48 min
Jul 10, 11:46 AM MDT	Special Weather Statement	TFX	Judith Basin	44 min
Jul 10, 11:51 AM MDT	Special Weather Statement	TFX	Cascade	39 min
Jul 10, 12:04 PM MDT	Special Weather Statement	TFX	Judith Basin	41 min
Jul 10, 12:17 PM MDT	Special Weather Statement	TFX	Broadwater	43 min
Jul 10, 12:39 PM MDT	Special Weather Statement	TFX	Judith Basin	36 min
Jul 10, 12:42 PM MDT	Special Weather Statement	TFX	Gallatin	33 min
Jul 10, 12:55 PM MDT	Special Weather Statement	TFX	Meagher	50 min
Jul 10, 1:01 PM MDT	Special Weather Statement	TFX	Fergus	44 min
Jul 10, 1:10 PM MDT	Special Weather Statement	TFX	Silver Bow	50 min
Jul 10, 1:25 PM MDT	Special Weather Statement	TFX	Judith Basin	50 min
Jul 10, 1:48 PM MDT	Special Weather Statement	TFX	Judith Basin	42 min
Jul 10, 1:51 PM MDT	Special Weather Statement	TFX	Beaverhead	39 min
Jul 10, 1:53 PM MDT	Special Weather Statement	TFX	Jefferson	52 min
Jul 10, 1:56 PM MDT	Special Weather Statement	TFX	Silver Bow	49 min
Jul 10, 2:26 PM MDT	Special Weather Statement	TFX	Jefferson	34 min
Jul 10, 2:28 PM MDT	Special Weather Statement	TFX	Silver Bow	32 min
Jul 10, 2:47 PM MDT	Special Weather Statement	TFX	Beaverhead	13 min
Jul 10, 3:00 PM MDT	Special Weather Statement	TFX	Silver Bow	45 min
Jul 10, 3:08 PM MDT	Severe Thunderstorm Warning	TFX	Jefferson, Madison	37 min
Jul 10, 3:13 PM MDT	Special Weather Statement	TFX	Broadwater	47 min
Jul 10, 3:16 PM MDT	Severe Thunderstorm Warning	TFX	Beaverhead, Madison	29 min
Jul 10, 3:25 PM MDT	Special Weather Statement	TFX	Gallatin	50 min
Jul 10, 3:27 PM MDT	Special Weather Statement	TFX	Madison	48 min
Jul 10, 4:11 PM MDT	Special Weather Statement	TFX	Gallatin	49 min
Jul 10, 4:40 PM MDT	Severe Thunderstorm Warning	TFX	Jefferson	20 min
Jul 10, 4:42 PM MDT	Special Weather Statement	TFX	Jefferson	48 min
Jul 10, 4:57 PM MDT	Special Weather Statement	TFX	Meagher	33 min
Jul 10, 4:58 PM MDT	Special Weather Statement	TFX	Gallatin	47 min
Jul 10, 5:02 PM MDT	Special Weather Statement	TFX	Jefferson	43 min
Jul 10, 5:08 PM MDT	Special Weather Statement	TFX	Gallatin, Madison	37 min
Jul 10, 5:45 PM MDT	Special Weather Statement	TFX	Gallatin	30 min
Jul 10, 5:57 PM MDT	Special Weather Statement	TFX	Lewis and Clark	48 min

Nearby

Special Weather Statements in Montana, 2017 Every special weather statement in 2017

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.