A strong weather disturbance moved across southwest Montana. This brought a prolonged period of strong wind to the area.
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The episode as NWS TFX wrote it up.
A strong weather disturbance moved across southwest Montana. This brought a prolonged period of strong wind to the area. Peak wind gusts measured across the area were around 60 mph.
The local office's own words before the first event, 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 the first event at Jun 19, 1:02 PM MST, 45 minutes earlier.
Area Forecast Discussion National Weather Service Great Falls MT 202 PM MDT Mon Jun 19 2023 .SYNOPSIS... Isolated to scattered showers expected through evening today and tomorrow, followed by drier conditions by midweek. Strong, gusty winds are also expected across the Rocky Mountain Front and Southwest Montana today. Afternoon temperatures remain below seasonal average, but gradually return to normal for the end of the week. && .DISCUSSION... A broad upper-level trough over the Pacific Northwest and associated low continues to be the provider for unsettled weather across the region this week, resulting in an influx of moisture from the Pacific, as indicated in the latest low-level water vapor imagery. In addition, strong southwesterly flow aloft will result in gusty surface winds across portions of Southwest Montana beginning this afternoon. The inherited High Wind Warning for the Madison and Beaverhead River Valleys, Ruby Mountains and Southern Beaverhead Mountains, the Madison and Gallatin Ranges, and the Centennial Mountains went into effect at noon today and will remain in effect through 8 PM MDT this evening. Sustained winds of 30 to 40 mph, gusting upwards of 60 mph are expected during this time. Although below highlight criteria, strong, gusty crosswinds up to 50 mph are also expected along the Rocky Mountain Front and adjacent plains. In both instances, difficult travel conditions are anticipated, especially for high-profile vehicles and those pulling a trailer. Anyone traveling are urged to prepare for strong, gusty winds and always know your vehicle limits. Additionally, another round of isolated to scattered showers are underway throughout the evening. Ensembles continue to suggest precipitable water values of right around 0.60" across the North- central and Southwest Montana for this afternoon. Latest probabilistic guidance suggests these showers; however, will not bring much precipitation, showcasing many locations will fall well short of the 0.10" mark through midnight Tuesday. In fact, the highest concentrations for precipitation falls over the Little Belts, with roughly a 30 to 40% chance of reaching 0.25" precipitation. Furthermore, snowfall development Tuesday through Wednesday has scaled back significantly as well, decreasing to generally 1 to 2 inches of snowfall falling along the mountains of Southwest Montana, especially the Tobacco Root and Pioneers. Even then, snow levels continue to creep upward, signifying the latest model runs are much warmer, thus snow chances have become more scarce. Regardless, colder and wetter condtions with any wind while recreating in the backcountry will bring a risk of hypothermia to those unprepared for such conditions. Afternoon temperatures for the next couple days linger in the low to mid 60s for most locations, though still remaining slightly below seasonal averages through at least Wednesday. Overnight temperatures persist in the lower 40s for most, though some locations, particularly around the Cut Bank vicinity and for areas south of I- 90 pose risk for experiencing late frost conditions (occurring around 36 degrees F). Probabilistically speaking, there's a >50% chance of many locations south of I-90 to experience a late frost tonight and tomorrow night, and right around a 30% chance for the Cut Bank vicinity. Toward the latter end of the week, temperatures gradually warm back up, with afternoon temperatures reaching back to the 70s for most, returning to seasonal averages. Drier conditions are expected midweek through Thursday; however, will end abruptly as longer range ensembles currently support precipitable water values of between 0.80" and 1.00". This deeper moisture, in conjunction with warmer temperatures, would favor an increased chance for widespread showers and thunderstorms late Friday and Saturday. - Pierce && .AVIATION... 1215 AM MDT Mon Jun 19 2023 (19/18Z TAF Period) Clouds are beginning to increase across North Central and Southwestern Montana, bringing a few areas of MVFR ceilings. These clouds will continue to thicken through the day today, eventually bringing a few areas of rain showers and thunderstorms along with them, mainly across Southwestern MT. In addition to the rain and thunderstorms across the SW, winds will be on the increase, with some airports in SW MT seeing wind gusts of 45-50+kts this afternoon. Winds and rain will decrease across the Southwest overnight tonight. Across the plains, expect just a few lower ceilings and isolated rain showers with some mountain obscuration possible area wide through tonight. Ludwig Refer to weather.gov/zlc for more detailed regional aviation weather and hazard information. && .PRELIMINARY POINT TEMPS/POPS... GTF 41 64 42 63 / 70 10 40 30 CTB 39 62 37 63 / 20 10 20 30 HLN 42 65 42 67 / 30 30 60 30 BZN 41 63 38 63 / 30 30 50 20 WYS 33 55 28 58 / 70 30 20 10 DLN 35 58 35 59 / 10 40 40 10 HVR 44 69 45 68 / 60 0 30 30 LWT 42 61 40 61 / 60 30 60 40 && .TFX WATCHES/WARNINGS/ADVISORIES... High Wind Warning until 8 PM MDT this evening for Beaverhead and Western Madison below 6000ft-Gallatin and Madison County Mountains and Centennial Mountains-Madison River Valley-Ruby Mountains and Southern Beaverhead Mountains. && http://www.weather.gov/greatfalls
Special Weather Statement National Weather Service Great Falls MT 1019 AM MDT Mon Jun 19 2023 MTZ301>303-307-308-192230- East Glacier Park Region-Northern High Plains- Eastern Glacier, Western Toole, and Central Pondera- Southern Rocky Mountain Front-Southern High Plains- Including the cities of East Glacier Park, Kiowa, Babb, Saint Mary, Marias Pass, Logan Pass, Browning, Heart Butte, Dupuyer, Cut Bank, Ethridge, Santa Rita, Rogers Pass, Bynum, Choteau, and Pendroy 1019 AM MDT Mon Jun 19 2023 ...STRONG, GUSTY WINDS TODAY... Wind gusts up to 50 mph are expected along the Rocky Mountain Front and adjacent plains, which may lead to difficult travel conditions, especially for high-profile vehicles or those pulling trailers. If you are traveling through the area, prepare for strong crosswinds and know your vehicle limits.
Preliminary Local Storm Report
National Weather Service Great Falls MT
226 PM MDT Mon Jun 19 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1237 PM Non-Tstm Wnd Gst 3 SW Cut Bank 48.60N 112.37W
06/19/2023 M55 MPH Glacier MT ASOS
ASOS station KCTB Cut Bank Airport.
&&
BrusdaThe national radar mosaic for the moment the first event began.
2 high wind. Local standard time, as filed.
Measured by site BRRM8 near Brenner.
Measured by Montana Department of Transportation Site MTNOR near Norris Hill.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Montana in 2023Every state in 2023This day in weather historyWarnings in Montana, June 2023
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 1105758, 1105759.