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Displaying AFOS PIL: AFDBIS Received: 2022-09-04 20:27 UTC
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875 FXUS63 KBIS 042027 AFDBIS AREA FORECAST DISCUSSION National Weather Service Bismarck ND 327 PM CDT Sun Sep 4 2022 .SHORT TERM...(This Evening through Monday) Issued at 325 PM CDT Sun Sep 4 2022 Warm conditions continue through the short term, with a few thunderstorms possible tonight. Dry, warm, and breezy conditions will continue to be found across the area through the evening. Low RH values combined with a breezy south southeast wind will bring some near critical fire weather conditions through the evening. A few sites may even see some critical fire danger at times, although this should be isolated and may not meet the time requirement of a Red Flag Warning. Thus will hold off on any highlights for now. Natural Color RGB satellite showing nicely wildfire smoke being pulled into the upper low across Montana. Look for this to enter into western North Dakota by this evening. Tonight, this mentioned low moves across the state. This could continue smoke across the west, while bringing a slight chance of showers and thunderstorms across the north and central. There is still some MUCAPE, modest mid level lapse rates, and decent shear. However, dewpoints are fairly low. Thus severe weather is not expected tonight, although cannot rule out a strong wind gusts through the night, and perhaps some small hail during initial thunderstorm development. Lows generally look to be in the 50s tonight. Dry conditions will bring only fair RH recoveries, especially to western portions. Any showers or thunderstorms that develop should diminish by Labor Day morning. The rest of Labor Day then looks to be warm and dry. Near critical fire weather conditions could once again return, mainly in the west where breezy west winds meet low RH. Breezy southerly winds may linger in the east, although RH values should remain fair. Central areas will see low RH, yet lighter winds. Highs for Labor Day will be in the mid 80s to mid 90s. Of concern will also be the potential for wildfire smoke. Many areas could at least see some form of hazy conditions from smoke, while areas across the west that get a westerly wind could see smoke lower to the surface. .LONG TERM...(Monday Night through Sunday) Issued at 325 PM CDT Sun Sep 4 2022 Warm and dry conditions continue until a potential break down of the ridge later this week. Amplified ridge across the inner mountain west will continue to maintain warm and dry conditions across the state Tuesday and Wednesday. A weak dry front may come through sometime Tuesday night into Wednesday, perhaps lowering temperatures a touch yet still maintaining above normal conditions. RH values look to be low each day, possibly bringing some near critical fire weather conditions, although winds at this time look to remain on the lighter side. Day 4 and 5 cluster analysis starting to come in line of a (perhaps temporary) break down in the ridge as a large trough and cold front comes through sometime Thursday into Friday. A head of this front on likely Thursday will be warm and breezy conditions. This could perhaps bring more near critical fire weather conditions. Once the front moves through sometime Thursday night into Friday, showers and perhaps a few thunderstorms are possible. The quick nature of this front will not allow for high amounts of qpf. And a check at the CSU-MLP, the chances for severe weather look low at this time. Day 6 and 7 cluster analysis then start to differ. Many support the trough sticking around bringing cooler yet mainly dry conditions. There are still some hints the ridge returns quicker. Perhaps by the late weekend. This is currently reflected late in the forecast period with temperatures going from the 70s Friday and Saturday back into the 80s Sunday. Even if the trough lingers, a lack of moisture will provide for a mainly dry forecast through the upcoming weekend. && .AVIATION...(For the 18Z TAFS through 18Z Monday Afternoon) Issued at 1255 PM CDT Sun Sep 4 2022 Look for VFR conditions through the forecast period. Some breezy southerly winds will be found today, diminishing later this evening. As they diminish, some low level wind shear may be found tonight, mainly from KBIS to KJMS. Only KBIS had high enough confidence to place in TAF at this time. Later today, through tonight, and possibly into Monday could see some smoke move in from western wildfires. Best chances will come from KXWA to KDIK and westward. Visibility should remain P6SM until winds become westerly Monday morning. Have accounted for this in these mentioned TAF sites. Lastly, a few showers and thunderstorms are possible tonight across northern and central North Dakota. Only KMOT had high enough confidence to place in VCTS at this point. && .BIS WATCHES/WARNINGS/ADVISORIES... None. && $$ SHORT TERM...Anglin LONG TERM...Anglin AVIATION...Anglin