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Everything posted by Sometimesdylan
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JNU NWS Office this AM "Models in agreement for an even colder air mass to move in for the weekend and then again mid week. Began the trend to lower temps for this time. For now staying toward the higher side of the model temp spectrum. The cold air and increasing winds will result in freezing spray for some of the inner channels and cold wind chills, especially at higher elevations."
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It's funny reading back on this as NOAA was predicting 3-6 for tonight and had issued a winter advisory... Between what the models were showing in liquid amounts and what the radar was showing with the precip arriving faster, I was thinking the CZ was going to set up over Juneau and not 40 miles west of it like NOAA was thinking. Well, NOAA just upgraded it to a Winter Storm Watch with 10-18 inches The text group I have here for weather was pretty stoked I guessed it (hopefully! still have to see...). Would not have done it without the knowledge I gained reading you guys! Currently snowing at a moderate amount, probably picked up a trace in the last hour.
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Good morning everyone. 13 outside right now. Think I'm getting some snow later this afternoon, models showing anywhere from 3-6 to 8-14 inches of snow tonight into tomorrow. The GFS has the most, but has been consistently showing/growing in its forecast. The euro didn't show much until just yesterday. Overcast right now... something is coming in the sky. Can't wait for finals to get done with. I wanna be done with OB and Pediatric nursing!!!
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33 outside and creeping down. Picked up 3 inches of snow outside my house. 18z GFS showing about 0.5 inches of liquid for the next 6 hours. Radar shows some showers offshore from Sitka, the mountains block anything showing on radar inland. Hope to pick up 2-4 more inches before things dry out tomorrow.
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Juneau NWS: "Low level warm air advection associated with yesterday's storm has finally run out. High temperatures today will occur early in the day and then begin a steady fall through the afternoon and over night." About 37 degrees this morning. Will be the last high above 30 I feel for a while. With events like this, it's cool knowing that I'm upstream of you guys. Gonna feel some arctic air tomorrow! For now I'm just hoping this heavy rain turns to snow before things clear out. The NWS here mentioned a convergence zone somewhere near Juneau a couple discussions ago. Would be awesome if that happened.
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Juneau forecast discussion this am: FXAK67 PAJK 021734 CCA AFDAJK Southeast Alaska Forecast Discussion...CORRECTED National Weather Service Juneau AK 834 AM AKST .LONG TERM...Long range period mainly deals with a switch to a much colder pattern that sticks around through most of next week. The cool down will be a one two punch affair. The first shot will be incoming from the W and SW as the cold air wraps around a lee side low in the northern gulf. Even though the air mass started out in the arctic the warm gulf waters will have modified the air mass by the time it gets here. However, 850 mb temps still drop to -10 to -12 C by Sat night which will be plenty cold enough for the remaining precip in the panhandle to change over to snow as early as Sat afternoon. QPF values will be rather low so any accumulations will only be around a few inches though some areas could see some higher amounts due to convergence or convective enhancement. Cold shot number two shows up late Sunday coming directly from the Yukon this time. This is the air mass that will cause temperatures to plummet into the teens and 20s or lower early next week. The results of this will be two fold. First, winds will change to the north and rapidly increase in the usual outflow areas. Gales expected for many of these areas. Freezing spray also expected with the high winds and low air temperatures in the northern inner channels. Second result will be the drying out of the panhandle as the northerly winds push what precip is left southward. Main forecast changes were in this time period as model trends had the precip and accompanying weak low in the gulf slower to push out then what was in there previously. Used mainly nam for guidance in this period for details on the outflow winds and timing on when the precip ends. Extended forecast remains cold as the cold northerly winds continue to feed cold air from the Yukon into the panhandle. There are indications that it will not be dry though. Guidance is suggesting that a gale force front may approach the panhandle mid to late next week and with cold air still entrenched in the inner channels it will likely be mostly snow that falls. Agreement on the track of the main low is up in the air though as scenarios range from a track into Haida Gwaii to it wandering around the western gulf. About the only thing we can say with some certainty is that there will be a storm somewhere in the gulf in the latter half of next week.