textproduct: Great Falls
This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.
KEY MESSAGES
- Widespread precipitation today, with accumulating snow most prevalent over the higher terrain of southwest MT tonight into Monday morning.
- Milder and drier conditions start by Tuesday and generally prevail through the rest of the upcoming workweek.
- With lighter winds and areas of high humidity levels, pockets of fog will be possible during late overnight and morning hours, mainly impacting central and north-central MT and the southwest valleys during the upcoming work week.
..Fog during the upcoming week
The main time period of concern will be Sunday night into Monday morning as precip moves through the region and tapers off. Lighter winds, along with residual moisture, will provide favorable conditions for fog development. The main impact associated with this would be a reduction in visibility and the potential for freezing fog due to overnight lows expected to be near or below freezing. If areas of denser fog develop, there is the potential for that fog to remain socked in and keep daytime high temperatures 5-10 degrees cooler than expected. Through the rest of the upcoming work week, pockets of fog may develop overnight, although these would likely be patchy and limited to areas near bodies of water and valleys. -ESH
AVIATION
02/00Z TAF Period
Widespread light precipitation will continue across much of the terminals for the first part of the TAF period. Low cloud decks, reduced visibility, and patchy fog will persist with the associated storm system off to the southeast. Conditions begin to gradually improve through the night time hours with rising cloud bases and precipitation exiting off to the east. Mountain obscuration will be a risk through most of the TAF period before seeing improvements at the very end. -JR
PRELIMINARY POINT TEMPS/POPS
GTF 44 34 52 33 / 90 90 10 0 CTB 43 28 51 29 / 80 40 0 0 HLN 44 33 49 28 / 100 90 10 0 BZN 43 31 44 24 / 90 100 50 0 WYS 41 26 42 19 / 100 100 10 0 DLN 41 32 44 26 / 100 90 10 0 HVR 45 31 47 29 / 80 100 10 0 LWT 48 30 45 28 / 80 100 70 0
TFX WATCHES/WARNINGS/ADVISORIES
None.
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