Alert archive / Montana / High Wind Warnings in 2021

High Wind Warning 3, NWS Glasgow, MT

January 20, 2021Phillips County, Montana

NWS Glasgow, MT issued this high wind warning at Jan 20, 2021, 12:03 AM MST for Phillips County, Montana. It was in force for 10 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
Jan 20, 2021, 12:03 AM MST (07:03 UTC)
Expired
Jan 20, 2021, 9:38 AM MST
In force
10 hr
Issued by
NWS Glasgow, MT

County Phillips County, MT

The radar

The Glasgow radar (KGGW), 96 km from the middle of the area, began a volume at 07:06 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, 7.1 hours before the alert went out and 97 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 2021-01-20Temperature 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 2021-01-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 215 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
1969 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
215 m²/s²
0-3 km storm-relative helicity
377 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

374 
WWUS75 KGGW 200703
NPWGGW

URGENT - WEATHER MESSAGE
National Weather Service Glasgow MT
1203 AM MST Wed Jan 20 2021

MTZ060-201800-
/O.NEW.KGGW.HW.W.0003.210120T0703Z-210120T1800Z/
Southwest Phillips-
Including the city of Zortman
1203 AM MST Wed Jan 20 2021

...HIGH WIND WARNING IN EFFECT UNTIL 11 AM MST THIS MORNING...

* WHAT...West winds 25 to 35 mph with gusts up to 65 mph.

* WHERE...Southwest Phillips County.

* WHEN...Until 11 AM MST this morning.

* IMPACTS...High winds may move loose debris, damage property and
  cause power outages. Travel will be difficult especially for
  high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People are urged to secure loose objects that could be blown
around or damaged by the wind.

&&

$$
1 follow-up statement
387 
WWUS75 KGGW 201638 AAA
NPWGGW

URGENT - WEATHER MESSAGE...UPDATED
National Weather Service Glasgow MT
938 AM MST Wed Jan 20 2021

MTZ060-201745-
/O.CAN.KGGW.HW.W.0003.000000T0000Z-210120T1800Z/
Southwest Phillips-
938 AM MST Wed Jan 20 2021

...HIGH WIND WARNING IS CANCELLED...

The strong gusty winds from the overnight hours have diminished
and will no longer pose a threat to the region today.

$$

Nearby

High Wind Warnings in Montana, 2021Every high wind warning in 2021

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.