Alert archive / Montana / Winter Storm Warnings in 2016

Winter Storm Warning 6, NWS Billings, MT

November 28, 20164 counties in Montana

NWS Billings, MT issued this winter storm warning at Nov 28, 2016, 2:25 AM MST for 4 counties in Montana. It took effect at Nov 28, 2016, 3:00 PM MST. It was in force for 29 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
Nov 28, 2016, 2:25 AM MST (09:25 UTC)
In effect from
Nov 28, 2016, 3:00 PM MST
Expired
Nov 29, 2016, 8:12 PM MST
In force
29 hr
Issued by
NWS Billings, MT

Counties Carter County, MT, Custer County, MT, Fallon County, MT, Powder River County, MT

The nearest sounding before it

Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 9.4 hours before the alert went out and 286 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, Glasgow Intl Airport, MT at 00:00Z on 2016-11-28Temperature 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, Glasgow Intl Airport, MT at 00:00Z on 2016-11-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -30 square meters per square second.193958Sfc1 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
1662 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
-30 m²/s²
0-3 km storm-relative helicity
76 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this winter storm 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 winter storm warning went out at Nov 27, 9:12 PM MST, 5 hours 13 minutes earlier.

Area forecast discussion, Nov 27, 9:12 PM MST, 5 hours 13 minutes before
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Hazardous weather outlook, Nov 27, 1:11 PM MST, 13 hours 14 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BILLINGS MT
111 PM MST SUN NOV 27 2016

MTZ030>033-036>038-057-058-WYZ099-272200-
TREASURE-NORTHERN ROSEBUD-CUSTER-FALLON-POWDER RIVER-CARTER-
SOUTHERN BIG HORN-NORTHERN BIG HORN-SOUTHERN ROSEBUD-
SHERIDAN FOOTHILLS-
111 PM MST SUN NOV 27 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL
MONTANA...SOUTHEAST MONTANA AND NORTH CENTRAL WYOMING.

* POTENTIAL IMPACTS: SNOW AND BLOWING SNOW CAUSING POOR VISIBILITY
  AND DIFFICULT TRAVEL CONDITIONS. ROADS WILL BECOME SNOW PACKED
  AND SLICK.

* TIMING: LATE MONDAY AFTERNOON THROUGH TUESDAY NIGHT.

* SNOW ACCUMULATION: SEVERAL INCHES OF ACCUMULATION POSSIBLE WITH
  THE BEST CHANCE OF OVER 4 INCHES BEING EAST OF A FORSYTH TO
  ASHLAND LINE.

* BLOWING SNOW: STRONG NORTHWEST WINDS WILL CAUSE BLOWING SNOW
  WHICH COULD LEAD SIGNIFICANT TRAVEL ISSUES DUE TO POOR
  VISIBILITY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HAZARDOUS WEATHER OUTLOOK IS ISSUED WHEN HAZARDOUS WEATHER COULD
IMPACT THE REGION WITHIN THE NEXT WEEK. BE SURE TO STAY TUNED FOR
FUTURE UPDATES AS LOCATIONS, TIMING, AND IMPACTS COULD CHANGE.
BEGIN PREPARATIONS TO MITIGATE ANY IMPACTS THAT COULD RESULT FROM
THE HAZARDOUS WEATHER.

&&

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 28, 2:25 AM MSTWinter Weather AdvisoryBYZRosebud31 hr

Nearby

Winter Storm Warnings in Montana, 2016Every winter storm warning 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.