Aikyam-Lab/Synoptic-Bench huggingface dataset:
Winds will be from the west and north late in the period behind a cold front. LW Chattanooga Airport, TN 42 54 26 45 23 / 10 20 0 10 0 Knoxville McGhee Tyson Airport, TN 42 51 26 42 21 / 10 20 10 10 0 Oak Ridge, TN 41 51 25 42 19 / 10 20 10 10 0 Tri Cities Airport, TN 40 50 28 39 18 / 10 30 30 20 10.
However, the true cold front is still further north and stretches from northern MO into west/central Nebraska. Lee troughing ahead of this feature will bring gusty southwest winds and highs 10-20 degrees above normal for Tue. Meanwhile, the Canadian is more positively tilted with the trough and much weaker with the lead piece of energy.
1249 PM EST Fri Feb 11 2022 High pressure will prevail across the region into Saturday.
1011 AM MST Fri Feb 11 2022 Early this morning, a canadian cold front has almost progressed southward to the Continental Divide. In wake of this cold front, breezy to strong northerly winds, and a quick drop in temperatures by 10 to 15 degrees. Snow continues to develop in wake of this cold front, from a bit of a convergence zone at 700mb, and upper jet dynamics. Areas west of the Divide, should remain dry, but be cooler than yesterday. Ridging and northwest flow return behind the early weekend Canadian system.
711 PM EST Fri Feb 11 2022 Dry and unseasonably warm weather will continue into Saturday as high pressure dominates.
20Z water vapor imagery shows broad cyclonic flow over the eastern half of North America and ridging along the west coast. At the surface, a cold front has pushed into the Ozarks and central OK with dry air moving in from the north.
636 PM EST Fri Feb 11 2022 Rain continues to move through the Ohio Valley today ahead of a cold front. Behind the cold front, a colder air mass builds in for the weekend, with periods of light snow showers and flurries possible.
647 PM EST Fri Feb 11 2022 Precipitation chance returns later today with crossing low pressure. Mild conditions continue this evening ahead of a trough currently digging across the southern Great Lakes and into the Ohio Valley. Strong cold advection behind the associated cold front will allow for perhaps some changeover to snowflakes before dawn. Scattered light snow will linger Saturday but largely be finished by the afternoon with the exception of the ridges and north of I-80 where orographic lift and lake enhancement will keep light snow possible into Saturday night.
As high pressure settles over the area by early Saturday morning.
Backdoor cold front has dived into the northern Nebraska Panhandle this afternoon.
Think most of the models may be too dry as our forecast lows in the Snake Plain could be too cold although didn't raise the lows. Model soundings continue to favor a mix of stratus and fog, and guidance still indicates potential for at least locally dense fog in the Lower and Upper Snake Plain, but spares the remainder of the region.
With high pressure off to the ENE, fairly benign weather was in place today.
Saturday will see partly cloudy to clear skies behind this system with cooler temperatures.
349 PM MST Fri Feb 11 2022 At the beginning of the short term period, current RAP analysis shows the CWA having a northwesterly flow aloft being underneath the back part of a trough. Later Friday, models show the upper air flow transitioning to north-northwesterly as the trough base moves just south of the CWA. On Saturday, model guidance shows the CWA underneath the back part of the trough with a northerly to north-northwesterly flow aloft throughout the day.
The expectation is still for those winds to diminish significantly overnight as high pressure will move in from the north. As high pressure settles over the area by early Saturday morning.
Previous Discussion: Strong ridge over the West will continue to leave Montana under a northwest flow aloft. However the placement of this ridge is far enough east that the next disturbances that want to ride down its eastern flank will bypass Montana and head into North Dakota.
Confidence has increased regarding the potential for meeting headline criteria along the Buffalo Ridge.
327 PM CST Fri Feb 11 2022 A cold front will move through the area through this evening, bringing a brief period of rain/snow showers as well as much colder weather for the weekend.
A large area of high pressure in the eastern pacific and west coast will persist through the weekend.
527 PM CST Fri Feb 11 2022 (This evening through Saturday) An upper level trough is currently swinging through the Central Plains and is moving south. In association with it, a cold front is currently moving south through the southern Panhandle. This cold front is expected to work its way through the area this afternoon and evening. With the high pressure building in, skies will begin to clear out through the afternoon hours. Highs tomorrow will be back near normal but much cooler than the past few days only reaching into the low 50s.
211 PM MST Fri Feb 11 2022 At the beginning of the short term period, current RAP analysis shows the CWA having a northwesterly flow aloft being underneath the back part of a trough. Later Friday, models show the upper air flow transitioning to north-northwesterly as the trough base moves just south of the CWA. On Saturday, model guidance shows the CWA underneath the back part of the trough with a northerly to north-northwesterly flow aloft throughout the day.
A weak coastal trough is anticipated to form offshore overnight, which could return a few showers over the Atlantic waters through daybreak as the trough moves away from the area. (modified) Weak ridge axis continues north of the area with favorable small craft boating conditions forecast.
Upper level trof continues to move eastward into the Missouri Valley,taking the colder air with it as high pressure develops across the western CONUS.
207 PM MST Fri Feb 11 2022 At the beginning of the short term period, current RAP analysis shows the CWA having a northwesterly flow aloft being underneath the back part of a trough. Later Friday, models show the upper air flow transitioning to north-northwesterly as the trough base moves just south of the CWA. On Saturday, model guidance shows the CWA underneath the back part of the trough with a northerly to north-northwesterly flow aloft throughout the day.
956 PM EST Fri Feb 11 2022 High pressure will prevail across the region into Saturday.
350 PM CST Fri Feb 11 2022 A cold front will move through the forecast area tonight bringing a chance for a few showers. Temperatures will be noticeably cooler Saturday we will struggle to get to 40 degrees for a lot of the area.
A cold front tonight will bring a wind shift to northerly winds between around 06Z in northern parts of the area to around 12Z in southern parts of the area. BR and FG could become dense around KHBG and KPIB before the cold front arrives, but chances for impacts to the other TAF sites remain too low to include in the TAFs at this time. North winds will be gusty during the day Saturday after the cold front passes. This trough will continue to funnel weak southerly flow into our area, which will slightly increase moisture overnight into tomorrow. Just to the west of this trough, a strengthening pressure gradient is creating gusty winds throughout the ArkLaMiss region, with the highest gusts currently in the Delta, topping out at 26 mph at GWO and GLH.
650 PM EST Fri Feb 11 2022 High pressure will prevail across the region into Saturday.
/issued 350 PM CST Fri Feb 11 2022/ A cold front will move through the forecast area tonight bringing a chance for a few showers. Temperatures will be noticeably cooler Saturday we will struggle to get to 40 degrees for a lot of the area.
Warm temperatures will persist across the interior this weekend, while a cooler marine airmass begins to impact the coast.
453 PM CST Fri Feb 11 2022 (This evening through Saturday) Gusty north winds are accompanying a cold front this afternoon, which is now moving into portions of south central OK. Cloud cover will decrease WNW to ESE throughout the day as the positively tilted mid to upper trough axis begins to exit our region.
For the rest of tonight, high pressure will build into the region with diminishing winds. Focus will then turn to yet another wave of low pressure moving southeast through the region on Saturday.
717 PM EST Fri Feb 11 2022 Mostly clear skies and warm temperatures will continue through Saturday with high pressure over the region.
For the overnight hours, winds will remain elevated as a cold front approaches from the west but will be far less than what was seen today. VFR flight categories are expected through the overnight hours, then lower into MVFR territory for KTYS and KTRI after daybreak tomorrow as the cold front and precipitation moves in. High pressure builds south into Arkansas tomorrow so should see winds remain NLY to NWLY. CD Chattanooga Airport, TN 46 55 26 44 22 / 10 10 0 10 0 Knoxville McGhee Tyson Airport, TN 45 52 27 41 20 / 10 20 20 10 0 Oak Ridge, TN 44 50 25 42 19 / 10 20 20 10 0 Tri Cities Airport, TN 42 50 28 38 18 / 10 30 40 20 10.
612 PM CST Fri Feb 11 2022 A cold front will move through the area through this evening, bringing a brief period of rain/snow showers as well as much colder weather for the weekend.
850 PM CST Fri Feb 11 2022 A warm front across WY this evening could be the focus for a few flurries across nrn Nebraska overnight as it moves east. Upper level trof continues to move eastward into the Missouri Valley,taking the colder air with it as high pressure develops across the western CONUS.
Quiet weather anticipated through the weekend as high pressure remains over the area.
710 PM EST Fri Feb 11 2022 A cold front brings showers tonight into Saturday. A cold front will push through the area tonight, bringing some showers. Colder air will move in behind the front with the higher elevations turning over to snow early Saturday.
At 8 PM CST, a cold front had moved through our northwest counties and was pushing into Nashville Metro. The forecast has been updated for hourly trends of temps and humidity as the cold front has moved into the area.
202 PM MST Fri Feb 11 2022 Strong ridge over the West will continue to leave Montana under a northwest flow aloft. However the placement of this ridge is far enough east that the next disturbances that want to ride down its eastern flank will bypass Montana and head into North Dakota.
Patchy fog could also develop across other portions of the area before a cold front starts to clear out any fog in the early morning hours. This trough will continue to funnel weak southerly flow into our area, which will slightly increase moisture overnight into tomorrow. Just to the west of this trough, a strengthening pressure gradient is creating gusty winds throughout the ArkLaMiss region, with the highest gusts currently in the Delta, topping out at 26 mph at GWO and GLH.
609 PM EST Fri Feb 11 2022 Precipitation chance returns later today with crossing low pressure. Mild conditions continue this evening ahead of a trough currently digging across the southern Great Lakes and into the Ohio Valley. Strong cold advection behind the associated cold front will allow for perhaps some changeover to snowflakes before dawn. Scattered light snow will linger Saturday but largely be finished by the afternoon with the exception of the ridges and north of I-80 where orographic lift and lake enhancement will keep light snow possible into Saturday night.
After a mild evening, another taste of cold air arrives after midnight tonight from another seasonal cold front. However, recent model trends have held on to more dynamic energy in the clipper- style trough, and this could translate to higher amounts of post- frontal cloud cover and a slight uptick in rain chances for Saturday.
It'll eventually spread further inland to maybe the Highway 105 corridor. A cold front will be approaching the area toward morning. A cold front will be making its way across the area Saturday morning. Looks like we can expect a smattering of activity along and behind the cold front, with better chances just north of the metro area where the H85 front looks to be somewhat of a focusing mechanism as well. Further south into the Gulf, a weak coastal trof should allow for some sct shra/tstms to develop offshore overnight.
341 AM EST Sat Feb 12 2022 High pressure will prevail across the region today.
Temperatures will likely be above freezing, so little to no accumulation can be expected.
Despite the calendar date, temperatures this afternoon climbed to early spring-like levels fueled by strong high pressure overhead and some lingering northerly breezes enhancing surface mixing. The big hot spot was Death Valley, where the high temp rose to 94 degrees, breaking the old record of 90 by several degrees. Slightly cooler conditions are in store over the weekend but still well above normal with afternoon highs 8 to 12 degrees above average.
The higher elevations of Southwest Virginia and the East Tennessee Mountains may see half an inch to an inch of snow accumulation. Discussion: In the upper levels, a broad trough is over the Eastern U. At the surface, a cold front is moving into the region and will be completely through by mid morning. Temps will be cooler today with highs in the upper 40s and 50s. Deep layer moisture is lacking with dry air in the lower levels.
Expect fairly light winds with high pressure in the area Saturday morning before winds increase again Saturday afternoon, although they will not be as strong, only gusting to around 25 mph. As high pressure settles over the area by early Saturday morning.
234 AM EST Sat Feb 12 2022 Mostly clear skies and warm temperatures will continue through Saturday with high pressure over the region.
850 PM MST Fri Feb 11 2022 At the beginning of the short term period, current RAP analysis shows the CWA having a northwesterly flow aloft being underneath the back part of a trough. Later Friday, models show the upper air flow transitioning to north-northwesterly as the trough base moves just south of the CWA. On Saturday, model guidance shows the CWA underneath the back part of the trough with a northerly to north-northwesterly flow aloft throughout the day.
The region remains under the influence of a weak high pressure situated in the eastern and northeastern Gulf of Mexico. Meanwhile, to our east, an inverted trough sits across the Bahamas and eastern Cuba. Nonetheless the combination of the high and inverted trough is leading to light north to northeast winds across the area. Weak high pressure parked in the northeast Gulf of Mexico will maintain light to gentle breezes through the overnight and into Saturday.
(Today and tonight) Cold front moved through the area yesterday bringing gusty north winds but little in the way of colder air initially. Meanwhile, upper trough dropping south through the area this morning may result in a few sprinkles or flurries along the Red river this morning.
02Z surface analysis places a cold front along the I-40 corridor in Tennessee and Arkansas this evening with an upstream cold front stretching from Lower Michigan back through East Central and Southwest Missouri. KNQA WSR-88D radar trends indicate some light returns occurring over portions of Northeast Arkansas, the Missouri Bootheel, and portions of Northwest Tennessee but is likely not reaching the ground given some dry air present in the low/mid levels. As of 8 PM CST, temperatures across the Mid-South range from the lower 50s north of I-40 and 50s to lower 60s south. /issued 350 PM CST Fri Feb 11 2022/ A cold front will move through the forecast area tonight bringing a chance for a few showers. Temperatures will be noticeably cooler Saturday we will struggle to get to 40 degrees for a lot of the area.
230 AM EST Sat Feb 12 2022 High amplitude pattern will persist across the CONUS with the period starting with a deep mean trough from the Great Lakes to the southern Plains. An U/L disturbance will dig down the backside and into the base of the trough today and tonight across the Mississippi River Valley.
For the overnight hours, winds will remain elevated as a cold front approaches from the west but will be far less than what was seen today. McD Chattanooga Airport, TN 55 26 44 22 49 / 10 0 10 0 0 Knoxville McGhee Tyson Airport, TN 52 27 41 20 44 / 20 20 10 0 0 Oak Ridge, TN 50 25 42 19 44 / 20 20 10 0 0 Tri Cities Airport, TN 50 28 38 18 39 / 30 40 20 10 0.
1119 PM CST Fri Feb 11 2022 A warm front across WY this evening could be the focus for a few flurries across nrn Nebraska overnight as it moves east. Upper level trof continues to move eastward into the Missouri Valley,taking the colder air with it as high pressure develops across the western CONUS.
1033 PM CST Fri Feb 11 2022 (This evening through Saturday) Gusty north winds are accompanying a cold front this afternoon, which is now moving into portions of south central OK. Cloud cover will decrease WNW to ESE throughout the day as the positively tilted mid to upper trough axis begins to exit our region.
1009 PM CST Fri Feb 11 2022 Mid/high-level winds will continue to back to the west-southwest and strengthen overnight, to the east of an amplifying longwave trough across the central Plains. However, during the predawn hours, a cold front related to the mid-level trough is expected to spread southeastward across the forecast area, entering northwest AL between 6-8Z and clearing all but our southeastern counties by 12Z. Cold high pressure of northern Canadian origins will build southward as the front drives further to the SE of the region. Generally cloudy skies are forecast as colder air from the high filters across the eastern CONUS. The true nature of the cold air will be felt, with lows cooling into the low/mid 20s.
Mainly minor blowing/drifting expected as lower elevation winds stay in the 10-20 kt range, mountains a little stronger with slightly more areas of blowing snow over higher exposed peaks/ridges. On Saturday, clearing skies and generally light winds in the wake of the upper wave, with temperatures staying slightly cooler than seasonal averages at most locations.
A cold front will be making its way across the area Saturday morning. Looks like we can expect a smattering of activity along and behind the cold front, with better chances just north of the metro area where the H85 front looks to be somewhat of a focusing mechanism as well. Further south into the Gulf, a weak coastal trof should along for some sct shra/tstms to develop overnight.
Some breezy conditions will then develop by Saturday evening as a cold front passes over the local area.
Temperatures in Western Montana are currently running 10 to 15 degrees cooler than 24-hours ago, and 5 to 10 degrees cooler in north-central Idaho.
An area of high pressure at the surface will build into western Kansas today as one upper level trough exits the Central Plains and begins to cross the Southern Plains and another upper level trough drops south across the eastern Northern Plains.
Mid/high-level winds will continue to back to the west-southwest and strengthen overnight, to the east of an amplifying longwave trough across the central Plains. However, during the predawn hours, a cold front related to the mid-level trough is expected to spread southeastward across the forecast area, entering northwest AL between 6-8Z and clearing all but our southeastern counties by 12Z. Cold high pressure of northern Canadian origins will build southward as the front drives further to the SE of the region. Generally cloudy skies are forecast as colder air from the high filters across the eastern CONUS. The true nature of the cold air will be felt, with lows cooling into the low/mid 20s.
1037 PM CST Fri Feb 11 2022 (This evening through Saturday) An upper level trough is currently swinging through the Central Plains and is moving south. In association with it, a cold front is currently moving south through the southern Panhandle. This cold front is expected to work its way through the area this afternoon and evening. With the high pressure building in, skies will begin to clear out through the afternoon hours. Highs tomorrow will be back near normal but much cooler than the past few days only reaching into the low 50s.
1040 PM EST Fri Feb 11 2022 A cold front brings showers tonight into Saturday. Minor adjustments were made slow cooling trends through the next several hours as temperatures remain slightly warmer than expected. A cold front will push through the area tonight, bringing some showers. Colder air will move in behind the front with the higher elevations turning over to snow early Saturday.
1237 AM EST Sat Feb 12 2022 High pressure will prevail across the region into Saturday.
At 8 PM CST, a cold front had moved through our northwest counties and was pushing into Nashville Metro. The forecast has been updated for hourly trends of temps and humidity as the cold front has moved into the area. Winds have begun to shift from the northwest as a cold front moves through the region.
1215 AM EST Sat Feb 12 2022 Precipitation chance returns later today with crossing low pressure. Mild conditions continue this evening ahead of a trough currently digging across the southern Great Lakes and into the Ohio Valley. Strong cold advection behind the associated cold front will allow for perhaps some changeover to snowflakes before dawn. Scattered light snow will linger Saturday but largely be finished by the afternoon with the exception of the ridges and north of I-80 where orographic lift and lake enhancement will keep light snow possible into Saturday night.
544 AM CST Sat Feb 12 2022 A warm front was located north to south across the western Sandhills. Ahead of this system, a warm front will move eastward through most of western NE, bringing highs into the low 40s across the west and central to mid 30s far northeast. Drier air will move in behind the front, with dewpoints falling into the low single digits west and central. Sunday, a warm front will push eastward as wind turn to the west and southwest. Warmed highs up into the low to mid 50s west and southwest, with upper 30s northeast.
702 AM CST Sat Feb 12 2022 Cancelled the wind chill advisory early this morning as cloud cover and light winds under the high are preventing the very cold wind chills from occurring. We are continuing to watch scattered snow flurries on radar move across the northern parts of the CWA and should dissipate as it runs into drier air in the eastern part of the CWA from the high pressure system currently influencing the upper Midwest. With the incoming low, and its upper level trough, pressure gradients will steepen leading to gusty wind conditions this afternoon across the western CWA (up to 25mph). With temperatures at the surface and aloft below freezing in this area, precip will be in the form of light snow, indicated in BUFKIT and deterministic models.
/issued 230 AM EST Sat Feb 12 2022/ High amplitude pattern will persist across the CONUS with the period starting with a deep mean trough from the Great Lakes to the southern Plains. An U/L disturbance will dig down the backside and into the base of the trough today and tonight across the Mississippi River Valley.
to our east) will allow for breezy/mixed NW winds across the lower elevations today and again on Sunday.
556 AM CST Sat Feb 12 2022 Cold front to approach southeast Texas and southern Louisiana today with winds shifting around to the northwest and increasing.
522 AM EST Sat Feb 12 2022 Much cooler temperatures with periods of light rain and snow are expected before mainly dry conditions resume on Sunday. A cold front currently running through central Ohio will cross the region this morning.
Mainly minor blowing/drifting expected as lower elevation winds stay in the 10-20 kt range, mountains a little stronger with slightly more areas of blowing snow over higher exposed peaks/ridges. On Saturday, clearing skies and generally light winds in the wake of the upper wave, with temperatures staying slightly cooler than seasonal averages at most locations. This will bring dry conditions and warmer temperatures to the area, with highs on Sunday expected to be in the 50s to lower 60s across the plains, with temperatures mainly in the 30s and 40s across the higher terrain.