Area Forecast Discussion
Issued by NWS Burlington, VT
Issued by NWS Burlington, VT
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394 FXUS61 KBTV 150850 AFDBTV Area Forecast Discussion National Weather Service Burlington VT 350 AM EST Fri Nov 15 2024 .SYNOPSIS... Gusty winds and low relative humidities will cause fire weather concerns today, particularly across southern Vermont. Dry weather will prevail through Sunday, before a few showers move through Sunday night and into Monday. No significant rain is expected until at least late next week. && .NEAR TERM /THROUGH SATURDAY/... As of 337 AM EST Friday...High clouds have overspread most of the region from the west, though they have yet to reach the Northeast Kingdom. The edge of the high clouds will waver back and forth for the rest of the night so parts of northern and eastern Vermont will likely see periods of clear and cloudier skies. These clouds have had limited effects on limiting radiational cooling though, so temperatures have been able to drop back into the 20s in most places. They will continue to creep down for the rest of the night and the coldest areas should be able to reach the upper teens. These high clouds will remain for most of today, but they will be thin enough that it will still be mostly sunny. A low will retrograde back west toward the region today and while it will not come close enough to bring any precipitation, it will increase winds. They will generally gust between 10 to 25 mph, though localized gusts up to 30 mph are possible in eastern Vermont. Combined with low relative humidities, there will be high fire weather concerns, particularly across portions of central and southern Vermont where a Red Flag Warning is in effect. See the fire weather discussion for more details. The low will remain to the east tonight and into Saturday, and ridging will be attempting to build in from the west. This will increase the pressure gradient a bit more and cause slightly stronger winds on Saturday. The ridging will also begin to push some warmer air into the region and temperatures will rise into the mid 40s to low 50s on Saturday, slightly above climatological normals. An isolated shower or two cannot be completely ruled out tonight or Saturday in the Northeast Kingdom from the aforementioned low, but they are not expected at this point. && .SHORT TERM /SATURDAY NIGHT THROUGH SUNDAY/... As of 337 AM EST Friday...Saturday night and Sunday will feature more dry weather as surface and upper level ridges build into Northern New York and Vermont from the west. Our region will remain under northerly flow, and temperatures will be very close to seasonal normals for the middle of November. Minimum temperatures Saturday night will range through the 20s, lower 30s along Lake Champlain. Maximum temperatures on Sunday will range through the 40s with some lower 50s in the valleys of southern Vermont. && .LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/... As of 337 AM EST Friday...Sunday night into Monday will bring our next chance for some light showers, though not very much accumulation anticipated. A weak surface trough will cross our area, and we can`t rule out some light scattered rain showers with this feature, though forcing is pretty weak and deep layer moisture is lacking. Tuesday through Wednesday will be drier, then our next better chance for some precipitation will be towards the end of the week for Thursday into Friday. This will be a stronger system, with much better forcing and upper level support as well. A vertically stacked low pressure system will approach our forecast area from the Great Lakes region. At this time looks like surface low will track right across our forecast area. We`ll have some warm air advection showery precipitation to start out on Thursday, then more stratiform rain moves through with the low on Friday. Still quite far out, and we will iron out the details as we get closer to the end of next week. Hopefully we will get some beneficial precipitation for our region. Temperatures will continue to be warmer than seasonal normals through the period. && .AVIATION /09Z FRIDAY THROUGH TUESDAY/... Through 06Z Saturday...VFR conditions should prevail through the next 24 hours. There is a low chance that a few lower clouds form on Lake Champlain and drift over BTV later in the night and lower ceilings for a few hours. Any of these clouds would be gone by mid- morning. Winds will increase during the day today and be out of the northwest. The strongest winds will be at MPV and EFK where gusts up to 20 KTs are possible. Winds will decrease again tonight and generally go calm or terrain driven. LLWS may develop tonight at RUT as surface winds go light despite stronger winds aloft continuing. There will be some high clouds passing through the area but they will generally stay at or above 20,000 ft. Outlook... Saturday: VFR. NO SIG WX. Saturday Night: VFR. NO SIG WX. Sunday: VFR. NO SIG WX. Sunday Night: VFR. Chance SHRA. Monday: Mainly MVFR, with areas VFR possible. Chance SHRA. Monday Night: MVFR. Chance SHRA. Tuesday: Mainly MVFR, with local IFR possible. NO SIG WX. && .FIRE WEATHER... Per coordination with fire specialists for fuels and because of the the expected weather today, a Red Flag Warning has been issued for the Southern Greens and Lower Connecticut River Valley. While these areas will see the most impactful fire weather, fire weather concerns exist across the region. The most critical time period will be from mid morning through mid afternoon when there will be an overlap of gusty northerly winds and low relative humidities. Winds will generally gust in the 15 to 25 mph range, though localized gusts up to 30 mph are possible. The strongest winds will be in eastern Vermont. Relative humidities will drop to between 20 to 35 percent, with the lowest values in southern and eastern Vermont. The combination of low relative humidities and gusty winds will promote increased potential for rapid fire spread with any fires that may start. Additionally, dry fuels in the western Champlain Valley and another period of relative humidity values below 30 percent will pose fire weather concerns. Winds will not be as strong as in Vermont so fire weather concerns are a little less. Fire weather concerns remain elevated for tomorrow, though not to the level of today. While winds are expected to gust slightly higher, relative humidities will be a bit higher. Minimum relative humidity values will generally be in the 30 to 40 percent range, though localized areas of southern Vermont should see values fall into the upper 20s. Northerly winds will gust between 15 to 30 mph. && .BTV WATCHES/WARNINGS/ADVISORIES... VT...Red Flag Warning from 7 AM this morning to 6 PM EST this evening for VTZ034-035. NY...None. && $$ SYNOPSIS...Myskowski NEAR TERM...Myskowski SHORT TERM...Neiles LONG TERM...Neiles AVIATION...Myskowski FIRE WEATHER...Team BTV