Alert archive / Montana / Flash Flood Warnings in 2015

Flash Flood Warning 6, NWS Billings, MT

June 5, 2015Custer County, Montana

NWS Billings, MT issued this flash flood warning at Jun 5, 2015, 9:58 PM MDT for Custer County, Montana. It was in force for 5 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 5, 2015, 9:58 PM MDT (03:58 UTC)
Expired: Jun 6, 2015, 3:00 AM MDT
In force: 5 hr
Issued by: NWS Billings, MT
Area: Storm-based polygon
Flood severity: None

County Custer County, MT

The radar

The Glasgow radar (KGGW), 231 km from the middle of the area, began a volume at 04:00 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

Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 4.0 hours before the alert went out and 232 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: 972 J/kg
Mixed-layer CIN: -20 J/kg
Mixed-layer LCL: 1263 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 77 m²/s²
0-3 km storm-relative helicity: 174 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 3.6

Open this sounding in Storm Lab

What forecasters said that day

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

NWS Billings, MT wrote its last area forecast discussion before this flash flood warning went out at Jun 5, 9:21 PM MDT, 37 minutes earlier.

Area forecast discussion, Jun 5, 9:21 PM MDT, 37 minutes before

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Hazardous weather outlook, Jun 5, 9:25 PM MDT, 33 minutes before

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In the hours before

Special weather statement, Jun 5, 8:36 PM MDT, 1 hour 22 minutes before

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Local storm report, Jun 5, 8:43 PM MDT, 1 hour 15 minutes before

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Local storm report, Jun 5, 9:21 PM MDT, 37 minutes before

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Special weather statement, Jun 5, 9:31 PM MDT, 27 minutes before

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Special weather statement, Jun 5, 9:54 PM MDT, 4 minutes before

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Local storm report, Jun 5, 9:58 PM MDT, 0 minutes before

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      <p id="message2">
        Please try again in a few minutes.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 5, 6:11 PM MDT	Special Weather Statement	BYZ	Custer	64 min
Jun 5, 6:14 PM MDT	Special Weather Statement	BYZ	Prairie	61 min
Jun 5, 6:18 PM MDT	Severe Thunderstorm Warning	BYZ	Custer	57 min
Jun 5, 6:22 PM MDT	Flash Flood Warning	BYZ	Powder River	6 hr
Jun 5, 6:24 PM MDT	Special Weather Statement	BYZ		66 min
Jun 5, 6:29 PM MDT	Severe Thunderstorm Warning	BYZ	Powder River	46 min
Jun 5, 6:41 PM MDT	Special Weather Statement	BYZ	Musselshell	64 min
Jun 5, 7:13 PM MDT	Severe Thunderstorm Warning	BYZ	Carter, Powder River	37 min
Jun 5, 7:26 PM MDT	Special Weather Statement	BYZ	Treasure	64 min
Jun 5, 7:37 PM MDT	Special Weather Statement	BYZ	Big Horn	38 min
Jun 5, 7:49 PM MDT	Special Weather Statement	BYZ	Big Horn	41 min
Jun 5, 8:36 PM MDT	Special Weather Statement	BYZ	Big Horn	24 min
Jun 5, 9:31 PM MDT	Special Weather Statement	BYZ	Big Horn, Custer, Rosebud	59 min
Jun 5, 9:49 PM MDT	Flash Flood Warning	BYZ	Big Horn, Rosebud, Treasure	6 hr
Jun 5, 9:54 PM MDT	Special Weather Statement	BYZ	Powder River	36 min
Jun 5, 11:42 PM MDT	Areal Flood Warning	BYZ	Carter, Powder River	24 hr
Jun 6, 12:14 AM MDT	Special Weather Statement	BYZ	Fallon	61 min
Jun 6, 4:08 PM MDT	Special Weather Statement	BYZ	Powder River	52 min
Jun 5, 6:01 PM MDT	Special Weather Statement	BYZ	Sheridan	44 min
Jun 5, 6:18 PM MDT	Severe Thunderstorm Warning	BYZ	Sheridan	28 min
Jun 5, 6:43 PM MDT	Flash Flood Warning	BYZ	Sheridan	3 hr
Jun 5, 9:41 PM MDT	Areal Flood Warning	BYZ	Sheridan	24 hr

Nearby

Flash Flood Warnings in Montana, 2015 Every flash flood warning in 2015

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.