Area Forecast Discussion
Issued by NWS Blacksburg, VA
Issued by NWS Blacksburg, VA
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110 FXUS61 KRNK 121456 AFDRNK Area Forecast Discussion National Weather Service Blacksburg VA 956 AM EST Wed Nov 12 2025 .SYNOPSIS... High pressure is centered south of our region. Clockwise wind flow around the high will result in westerly winds across the area today and Thursday. In general, expect increasing temperatures and dry conditions through the remainder of the week. It will remain windy, with gusty westerly winds persisting through Thursday before diminishing. The biggest concern over the next several days will be the wind and its potential to contribute to elevated fire danger. && .NEAR TERM /THROUGH TONIGHT/... As of 950 AM EST Wednesday... No major changes were made to the forecast today. Winds will continue to remain gusty across the region through this evening before diminishing after sunset tonight. Previous Discussion: Key Messages: 1) Gusty winds today. 2) Temperatures moderate. Cold pattern will break down today as anomalous upper-level trough over the eastern continental U.S.(CONUS) shifts east. Simultaneously, High pressure over the Deep South will build eastward, clockwise flow around the high bringing westerly winds and warming temperatures to the Mid-Atlantic region. Winds aloft, 2000-5000 feet AGL, are healthy with speeds of 40-50kts. As this wind mixes to the surface today expect wind gusts of 25 to 35 mph. A west wind for our area will also result in compressional (adiabatic) warming and drying lee of the mountains (east side) so expect afternoon humidity to drop into the 20-30 percent range...a dry windy day. This raises concern for fire weather, the wind and dryness of the air contributing to increasing fire danger. Today`s Catch...Fire Danger. Highs today rapidly warming to near the seasonal norm...50s mountains and lower 60s piedmont. Gusty west with with speeds of 10-20 mph and gusts 25 to 35 mph. Humidity bottoming out between 20-35 percent. For tonight, after the warm bounce this afternoon, temperatures should not get as cool tonight...lows mainly in the 30s to lower 40s. Clouds will increase late tonight in repsonse to some high level moisture. This may result in standing wave cirrus lee of the Blue Ridge by daybreak Thursday. Winds will subside in the valleys but remain breezy across the ridge crests, humidity recovery good in the valleys where the winds decouple. Humidity recovery for the higher elevations will be relatively poor due to continued mixing from the wind through the night. && .SHORT TERM /THURSDAY THROUGH SATURDAY NIGHT/... As of 200 AM EDT Wednesday... Key Message: - Warming temperatures and dry weather conditions are expected through the end of the week. Overall, forecast confidence is on the high side through the end of this week. Ridging, both at the surface and aloft, will move into the region Thursday as the influence of the upper-level trough weakens over the eastern U.S. With the surface high expected to be centered across the southern Appalachians through the end of the week, dry weather conditions should continue to be seen. The big story will be the gradual warming of temperatures as ridging builds into the forecast area. Probabilistic guidance indicates a high likelihood of boundary layer temperatures greater than 5C by Friday, especially south of the US-460 corridor. Values such as these, when mixed down dry adiabatically, will likely result in highs in the 60s across most areas east of the Blue Ridge, with mid- and upper 50s in the higher terrain areas. Given the dry airmass in place, this scenario is entirely possible. Some of the ensemble members are indicating some isolated or "slight chancy" PoPs encroaching upon the higher terrain in our Southeast West Virginia Counties by Friday night. This is associated with a little bit of weak forcing associated with a northeastward-moving warm front. The overall moisture depth associated with this is relatively shallow, and appears to be confined to mainly 5-10000 ft. based on most forecast soundings. This leads me to believe that only a couple of hundredths of an inch of precipitation should be seen if any appreciable rainfall reaches the ground for this lower confidence event. && .LONG TERM /SUNDAY THROUGH TUESDAY/... As of 200 AM EST Wednesday... Key Messages: - Odds of seeing precipitation return Saturday night into Sunday morning. - Large amount of uncertainty surrounds another early or mid-week storm system. Those low precipitation probabilities may linger into Saturday morning as the airmass over our region continues to moisten. For the most part, Saturday should remain dry as ridging weakens and the surface high gets shunted southward. We`ll be watching a northern stream system, as an upper-level trough moving across southern Canada pushes a cold front into the Ohio Valley. While there are some discrepancies in timing amongst the deterministic models, it looks like the odds of seeing precipitation associated with this system should move into our forecast area in the pre-dawn hours Sunday, with the front arriving in the western part of our forecast area by sunrise. Precipitation probabilities will likely remain west of the Blue Ridge with this system, as the upslope component may enhance forcing slightly. All-in-all, though, my forecast confidence remains "decently high" through the weekend. The biggest adjustment this forecast cycle was with the timing of this system. (It was sped up a tad.) Just about any forecast confidence I had greatly diminishes for Monday and Tuesday. After the Sunday front moves through, focus shifts to the storm system that`ll be heading into Mid-America. There`s little consensus in the evolutionary details of this system, much less with the timing. Regardless, this storm system should impact our region at some point next week and bring us our next shot of seeing precipitation. If I had to place a wager on when, I would probably lean closer to mid-week (Tuesday-Wednesday?). But based on what I`m seeing at this hour, there`s too much uncertainty to pin anything down. && .AVIATION /15Z WEDNESDAY THROUGH SUNDAY/... As of 630 AM EST Wednesday... Flight conditions are expected to remain VFR through the 24 hour valid TAF. Main concern is the wind with potential for LLWS this morning and moderate to locally severe mechanical turbulence from the cross barrier wind flow across the Appalachians once the wind mixes to the surface mid-morning onward. Surface wind gusts of 25 to 35 kts are possible today. Forecast confidence is high. .EXTENDED AVIATION OUTLOOK... Gusty winds continue into Thursday, but gusts lessen to 15 to 20 kts. High pressure moves overhead promoting clear to partly cloudy VFR skies. Conditions should be mainly VFR Friday and Saturday, but a few MVFR ceilings and/or showers may move into BLF and LWB during that time. && .FIRE WEATHER... As of 330 AM EST Wednesday... Key Message: 1) Elevated fire weather conditions are expected the next several days. The combination of wind and low humidity will result in good drying conditions. In spite of recent precipitation, leaf litter will dry quickly, becoming crunchy and receptive to fire. Temperatures will trend warmer, and this combined with gusty west winds and low humidity will contribute to an increase in fire danger across the region, but especially along and east of the Blue Ridge where temperatures will be the warmest. Wind gusts of 25 to 35 mph will be common today and 15 to 25 mph Thursday. Humidity recovery tonight will be relatively poor along the ridgetops. Both today and Thursday are a concern, with the peak potential for fire concerns during the afternoon both days when the vapor pressure deficits are the highest. Winds are forecast to diminish by Friday, lessening the effects of fire spread. However, Friday and into the upcoming weekend are expected to be warmer than normal with highs in the 60s/70s, favoring good burning conditions. Little or no measurable rain is expected until next week. There is a slight chance of showers across the mountains this weekend. && .RNK WATCHES/WARNINGS/ADVISORIES... VA...None. NC...None. WV...None. && $$ SYNOPSIS...PM NEAR TERM...EB/PM SHORT TERM...DB LONG TERM...DB AVIATION...PM FIRE WEATHER...PM