Aikyam-Lab/Synoptic-Bench huggingface dataset:
1159 PM CST Mon Dec 18 2017 A mix of IFR/LIFR cigs will continue throughout the overnight hours, with areas of reduced vsbys in FG/BR expected as well as a warm front over SE TX/Cntrl LA begins to drift N into E TX/Srn sections of Ncntrl LA by 12Z. Thus should result in slightly improved vsbys, with the SHRA expected to shift farther NE N of I-20 by 18Z into extreme NE TX/SE OK/SW AR just N of the warm front for the remainder of the afternoon.
924 PM PST Mon Dec 18 2017 Fair and seasonally mild weather will continue through Tuesday under high pressure aloft.
325 AM CST Tue Dec 19 2017 (Today and Tonight) The upper level low bringing precipitation into the area over the next 18 hours or so is currently just southwest of El Paso, and is expected to move east through the Permian Basin, before turning northeast through the Big Country and into Oklahoma this evening. As the low moves northeast tonight, expect activity to end from southwest to northeast this during the afternoon and early evening. Temperatures will be cooler today with clouds and rain in the area, so have gone with upper 50s to lower 60s.
At the surface, sw flow prevailed ahead of a trough moving through the plains. Because of the combination of the high winds an light snow with some blsn, a winter wx advisory was issued. Otherwise, conditions will remain relatively mild with highs in the lower to mid 30s, warmest south and east.
Better moisture/more rain will occur near and south of the low track, but there will still be a good chance for rain over southern MO/far SE KS. The highest amounts are expected along the AR/MO border. A dry air fetch from high pressure nosing south into the Midwest will likely keep our central MO counties precip free for the most part. A cold front will bring a major change to temperatures for the days leading up to Christmas (Monday).
Even through most of the CWA is seeing temps in the 30s, highs today should only reach the upper 30s, to the lower 40s. While highs could be warmer today, mid level clouds moving in from the west will limit the potential warming. An area of low pressure will begin taking shape over the Northern Rockies tonight with upslope pcpn possible over Montana and western ND.
The fog and low clouds will be very slow to improve Tuesday morning, especially the low clouds.
A dry cold front will sweep east of Wisconsin by around mid morning. It'll be a bit breezy, so the wind chill will temper those warmer December temps. The quiet weather will continue tonight as high pressure takes hold.
Sandpoint is right around freezing and Deer Park is close as well as Omak. I think all these locations will see snow as the warm front marches further north later tonight. However, the lowest elevations in the Okanogan Valley are still expected to see very wet snow with high moisture content and lower snow ratios. /SVH 06Z TAFS: A warm front moving into the region will increase precipitation overnight. Cold front passage will be Tuesday evening with wind gusts between 20-25 kts expected as it swings through.
348 AM CST Tue Dec 19 2017 An upper level low over southern New Mexico will open up to a wave as it translates east today. Surface lee troughing will build in behind the wave with breezy westerly surface winds.
326 AM CST Tue Dec 19 2017 Cold front currently working through the forecast area. Temps aloft will tumble behind the front, leading to cooler highs than yesterday.
Warm frontal boundary from roughly along the I-10 corridor will continue to move inland to the north during the overnight. Upper low currently east of the Baja is progged to begin weakening and accelerating EWD tomorrow, translating through the ARKLATEX during the overnight hours. Southerly flow returns THU amid lee cyclogenesis ahead of a digging WRN CONUS trof. Upper trof is forecast to continue digging into the Central CONUS, driving a CDFNT into the region FRI or FRI night.
254 AM EST Tue Dec 19 2017 TODAY AND TONIGHT: High pressure continues to dominate the weather pattern keeping warm sunny and dry weather with easterly wind flow. High temperatures today in the low to mid 80s. SHORT TERM: Ridging and high pressure will continue to dominate the weather pattern keeping South Florida mostly dry and warm with temperatures above normal in the low to mid 80s.
257 PM MST Thu Jan 18 2018 Ahead of the incoming trough, increasing mid level westerly flow is expected as the ridge axis moves east of Colorado. Wind gusts are forecast to reach about 70 mph over the higher mountain passes. Lighter winds will likely be present through the lower foothills due to the lack of mountain top stability. Clouds will increase as moisture continues moving over the ridge into the state.
256 PM EST Thu Jan 18 2018 Currently - High pressure spreading southeastwards across the extreme southeastern United States. Overnight lows will be in the lower 50s, with some places nearer South Florida closer to 50. The high pressure system will continue to expand eastwards through the weekend. Rain chances will creep upwards through the weekend as the lower level ridge slips east of our area and increased lower level moisture increases and inhibition weakens. Thereafter, the impulse aloft will be to our east and weak lower level ridging builds back nearer the area. Through the first half of the upcoming week, surface ridging will remain to our north maintaining gentle to moderate easterly flow. High pressure will continue to spread southeastwards across the extreme southeastern United States tonight.
Large waves generated by a deep low pressure offshore will impact the coast today.
Therefore, the Hard Freeze Warning expired at 9 AM as readings continue to climb into the lower 30s already at 17Z. We should add another 10 degrees on average to these temperatures to end up in the lower to mid 40s for afternoon highs. Most overnight lows will sink to the lower to middle teens by daybreak.
152 PM CST Thu Jan 18 2018 Temperatures have finally climbed above the freezing mark after being in the deep freeze the past few days. With full sunshine and temperatures above freezing, should begin to melt some of the snowcover remaining across the area. The Arctic high pressure system has shifted to the deep south allowing for a south to southwest surface wind.
338 PM EST Thu Jan 18 2018 Temperatures warmed up into the low 60s this afternoon for most of the east coast metro area. Tonight, good radiational cooling and lighter winds will allow for significant cooling, although the lows tonight won't be quite as cold as last night.
Dry weather with moderating temperatures will be the rule over central Indiana through Friday night as high pressure shifts to the southeastern states and the Atlantic, ahead of a Rockies system.
106 PM EST Thu Jan 18 2018 Low pressure, well off the Mid Atlantic coast late this morning, will track east northeast farther out to sea this afternoon while high pressure builds in from the west.
Clouds will break up in patches overnight making the low temperatures forecast rather challenging. Upper level ridging will continue to draw up warmer air into the region.
1101 AM CST Thu Jan 18 2018 Area early this morning was between high pressure centered over the Southern Mississippi River valley and a rather potent mid-level low rotating eastward across southwest Ontario. Another wave of low pressure will track across southern Canada tonight through Friday night, drawing in even milder air into our region along with a few clouds from time to time.
Issued by National Weather Service GRAY ME 259 PM EST Thu Jan 18 2018 High pressure will build across the region through Friday night.
Expect to see cloudy skies tonight as moisture depths increase and an upper level low approaches. Will see a much warmer night tonight, but will still likely see freezing temps near Houston and to the north. This feature coupled with an upper level low that will move across on Friday and will trigger showers areawide and possibly some thunderstorm activity near the coast and offshore.
/NF/ Today and tonight: Modifying Arctic high pressure in the atmospheric low levels is sitting right atop the Lower Mississippi Valley early this morning and promoting light winds and associated good radiational cooling conditions given clear skies. Full sun and light winds will yield decent mixing and nearly all areas, aside from maybe portions of the Arklamiss Delta, will get above freezing by noon. But even spots in the Arklamiss Delta should manage to top out at least several degrees above freezing by the afternoon. Even though the modifying high pressure center will be starting to the shift to the east tonight the air mass will remain very dry and winds light, again promoting good radiational cooling.
High pressure will begin to slide to the east and elongate tonight. This will allow for a more westerly flow over the area and a touch warmer. A few colder spots in the northeast may reach the lower teens but will be more isolated than widespread.
Upper level ridge builds across the area today as trof begins moving into Pacific Northwest. Another mild day on Friday, though cooler than today as low level thermal ridge shifts east.
Earlier there was some rain reported, but temperatures were 34 or warmer. On the back side of this system as the precipitation moves out, there may be a brief period of freezing drizzle as there is a short period of lingering low level moisture as the higher levels dry out. Have stayed fairly close to guidance for highs, rising into the low to mid 30s. Friday the warm air advection pattern continues initially, followed by a cold front in the afternoon as a low pressure system moves out of Manitoba into Ontario. Temperatures get even warmer than today, with highs in the mid and upper 30s.
337 PM EST Thu Jan 18 2018 Current conditions across the region features clear skies with high pressure centered over the AL/MS area with the axis nosing northeast over the OH Valley. Ridgetop temps will be in the teens with a 10 degree ridge to valley difference despite the weak southwesterly flow. Speaking of that southerly flow, heading into tomorrow, the high over the southeast shifts east allowing for increased gradient and increased southwesterly flow as high temps tomorrow afternoon may reach the 40 degree mark in many locations. This will make for less of a ridge to valley temperature difference as well as lows only dropping into the middle 20s, even in the deeper valleys.
318 PM EST Thu Jan 18 2018 A large are of high pressure centered over the Lower Mississippi Valley will maintain fair skies for the next few days.
Cooler air behind the front will allow snow to return on area mountain passes.
1107 AM CST Thu Jan 18 2018 Increased the cloud cover to account for the rather dense cirrus shield topping the ridge across the front range of the Rockies. As the upper ridge drifts east and flattens over the region through Friday, significantly warmer air will overspread the central plains with west to southwest flow at the surface. Parts of the area with deeper snow cover will see a lag in the return of warmer temperatures today but nonetheless, still climb above freezing with even greater warming on Friday as temperatures climb into the 40s and 50s across the area.
1235 PM EST Thu Jan 18 2018 High pressure centered south of the region will extend up the western side of the Appalachians through the end of the week.
For tonight, a coastal trough across the southern Texas coast will deepen. The cyclonic flow associated with this trough will bring an increase in moisture to the coastal plains tonight. Given the increase in moisture along with lift from an upper low to our northwest, we will continue to mention a low chance for rain near the coastal plains tonight. On Friday, the coastal trough should move a little farther inland as the upper level low moves across southern Texas.
This afternoon, southerly winds have helped warm temperatures to above freezing across all of the CWA except the area between Caruthersville, Missouri and Paris, Tennessee. By tomorrow, all locations will see highs above freezing. One more chilly night is expected across the Mid-South as lows are expected to drop from the mid teens near Paris to the lower 20s across Eastern Arkansas. Even warmer conditions are expected for the weekend as southerly winds will increase ahead of a developing low pressure system in the Plains.
1238 PM EST Thu Jan 18 2018 A weak ridge of high pressure will bring quiet and seasonable weather to the area today. A warm front will lift north across the area late tonight and early Friday with clouds and a few mountain snow showers. Did add low chance PoPs for snow showers for northern and central zones tonight with strong short wave trough moving through. Weak ridging will take center stage today. with lingering clouds and scattered flurries confined to the higher terrain in upslope flow. We'll see a band of warm air advection clouds overnight with this feature and perhaps a few snow showers across the higher terrain.
1024 AM MST Thu Jan 18 2018 The ridge over the Great Basin will slide east and over Colorado today as a deep trough off the west coast begins to move inland. the 500 mb ridgeline will be east of the area by sunset today and that will open the Great Basin and Central Rockies to increasing southwest winds aloft and at the surface after the morning surface-based inversions mix out Friday. Friday should see the 500 mb trough over the west coast at noon and moving inland. Ahead of that trough will be a 120 kt jet stretching from southern CA through western Montana. High clouds will also stretch over the forecast area with precipitation reaching the eastern Uinta mountains in northeast UT by sunset Friday as the surface cold front approaches.
Should see warming trend continue at most locations as heights/mid-level temps increase, along with just enough wind to mix down warmer air to the surface. Overnight, upper ridge flattens as wly flow increases across the area.
Southwest winds have ushered in some more seasonal temperatures getting close to the freezing mark. High pressure aloft will shift across the Great Lakes tonight. We will have some higher clouds due to the low passing by to the north and from a system well out in the west. Initial zonal flow will transition to more ridging as upper level low/trough moves through the central CONUS this weekend.
High pressure sitting over the area with full sunshine will allow temperatures to climb above freezing area wide.
/issued 318 AM CST Thu Jan 18 2018/ A weak cutoff low will meander over southwest Texas this morning, with perhaps enough lift to produce light snow over the Big Bend region into the Lower Trans Pecos.
145 PM EST Thu Jan 18 2018 Low pressure, well off the Mid Atlantic coast late this morning, will track east northeast farther out to sea this afternoon while high pressure builds in from the west.
Temps have risen well into the 40s, with a few locations west and north of Tulsa even in the low 50s. With the upper trough moving into the western CONUS and the upper jet setting up well to our north and lee trough to our west and resulting south winds, the warming trend will continue over the next few days.
Highs tomorrow will be even warmer with mid to upper 40s likely and some areas possibly reaching the lower 50s.
At this point, it appears this will mainly be for areas north of the highway 2 corridor.
Closer to the coast, temperatures will get down into the low to mid 20s.
Best chance for this would be in the Keweenaw and there could be some freezing drizzle mixed in with it.
Some high clouds streaming in over the ridge over the over the Dakotas.
352 PM CST Thu Jan 18 2018 Near zonal sfc pressure gradient, draped acrs the mid CONUS between GRT LKS clipper and southern ridge, still driving temp moderating southwest LLVL flow acrs the area.
Current satellite indicates abundant high level moisture over ridge which will steam into Colorado. Ridge axis moving into the Rockies today with warm advection continuing. Some high clouds are thinning as they move over the ridge axis. Temperatures will be 5 to 10 degrees warmer today, then the thickening clouds and slightly enhanced drainage winds will keep the temperatures milder overnight tonight. FRIDAY'S WARMTH WILL BE REPLACED BY A WINTER STORM SYSTEM WITH Friday will be dry and unseasonably warm as the upper ridge shifts east. Locations farther north including Fort Collins and Greeley will still have to fight a bit of the inversion and any clouds there will keep temperatures several degrees cooler.
212 PM EST Thu Jan 18 2018 A large are of high pressure centered over the Lower Mississippi Valley will maintain fair skies for the next few days.
MAV guidance not as aggressive with the low clouds, but the GFS-LAMP data is showing the potential for lower clouds. With temps in the 30s this afternoon, any melted snow will add to the low level moisture. Of the 12Z versions of the GFS, Canadian and ECMWF, the GFS was the fastest, had the northern most path of the system, and was generally strongest with both the surface and mid level cyclones.
09Z readings were 15 to 25 degrees warmer than the same time last night: a quite welcome change.
Otherwise, milder SW breezes will gain more momentum by Friday ahead of lee troughing poised in eastern NM. Also, the upper pattern by this time will feature a progressive ridge atop the region which tends to be unfavorable for stronger wind potential.
Precipitation may begin as rain or freezing rain before quickly changing to snow.
325 PM CST Thu Jan 18 2018 Mid level trough with some indications of a closed contour across the Davis Mtns will drift eastward through the end of the work week. In turn, this will result in a return of modest ridging influence into Friday. This trough will bring increasing southwesterly flow into the region this weekend.
A cold front will approach the mid state region by just before sunrise on Mon morning, and then move west to east across the area as the day on Mon progresses. Maybe not as warm as previously expected on Fri afternoon, but a significant snow melt should occur by the afternoon hours, with highs mainly in the low to mid 40s. Overnight low temps on Fri night will inch toward the freezing mark, and maybe some over snowfall across the northwest counties on Sat, but most snowfall will definitely melt by Sat as afternoon high temps get much closer to even a degree or two warmer than seasonal normal values in the upper 40s to lower 50s. The end to freezing overnight low temps will commence on Sat night with lows generally rising into the upper 30s to around 40 degrees.
some of the more urban places may only touch the freezing mark, but the typically colder spots will likely spend a few hours below freezing. Expect nearly all locations to be above freezing by 8 or 9 AM tomorrow morning, with temperatures warming into the 50s by tomorrow afternoon.
258 PM EST Thu Jan 18 2018 High pressure centered south of the region will extend up the western side of the Appalachians through the end of the week.
1227 PM CST Thu Jan 18 2018 The warming trend is underway with high pressure off to our south and east.
Portions of inland Southwest Florida saw freezing temperatures earlier this morning and much of South Florida saw wind chills in the 20s and 30s. Expect another chilly night tonight, but with the high building in to the north we should see winds shift north-northeasterly. /issued 628 AM EST Thu Jan 18 2018/ Northerly winds behind the cold front passage will be breezy around 10-12 knots with some occasional higher gust. /issued 436 AM EST Thu Jan 18 2018/ Latest water vapor imagery loop displays the cyclonic spin of a low pressure system centered over North Carolina. WPC analysis indicates a cold front draping south and southwestward from this feature, extending across the southern tip of the Florida peninsula. Mostly clear skies, dry conditions, and a cold airmass will help to lower minimum temperatures near Lake Okeechobee to the lower 30s.
Therefore, the Hard Freeze Warning expired at 9 AM as readings continue to climb into the lower 30s already at 17Z. We should add another 10 degrees on average to these temperatures to end up in the lower to mid 40s for afternoon highs.
Temps seem to be a degree behind on trends so lowered the high temp by a degree. The axis of an upper level trough extending from Quebec to the Southeast Conus continues to move east of the area with surface and upper level ridging building into the region. The snowcover should factor into the picture again tonight with high pressure and light winds. Temperatures should moderate further into the low to mid 40s for most locations or near climatological normals.
Upper level ridging will begin to build in over the region tonight and then flatten out Friday as a short wave trough tracks across southern Canada. Southwest flow in the low levels will continue to bring warmer air to the region. Still, high temperatures Friday are expected to be about 3 to 5F warmer than today topping out in the upper 30s to lower 40s.
Another cold night across the area especially the northeast part of the Hill Country where temperatures are in the lower to mid 20s as of 4 am. The Rio Grande Plains and southern Edwards Plateau are a bit warmer since clouds lingered around for a longer period of time yesterday and therefore, radiational cooling less effective there. Temperatures rebound to above freezing by noon time today everywhere and reach the mid 40s most areas by mid afternoon. The eastern two-thirds of south central Texas remains cloudy this evening into Friday morning as increased moisture surges to the north and into our area as a coastal low pressure system develops ahead of the upper level disturbance mentioned above and forecast to move east into east Texas by noon on Friday.
High pressure will build to the East of the region this period.
A cold front is tracking across the forecast area at this time. Max temperatures were increased a few degrees in several locations, as most locations will have the warmest temperatures this morning ahead of the cold front. A cold front will stall along the Blue Mountains this afternoon and then move east of the area early evening.
Expect another fair and mild winter day today, ahead of a fast- moving trough to kick off the weekend.
Overnight lows across the area will fall below freezing with temperatures ranging from 26 to 30 degrees. By Friday, upper level ridging will move into West Central Texas and will remain in place as a deep trough continues to develop over the western CONUS.
Issued by National Weather Service RAPID CITY SD 227 PM CST Thu Jan 18 2018 The latest water vapor images showed a ridge over the central CONUS with an upper low off the BC Coast. This ridge will flatten and translate east through Friday as a trough approaches the West Coast. The result is that mild and dry conditions are expected to continue tonight through Friday as 850-mb temperatures run well above average under the influence of the upper ridge.
215 PM EST Thu Jan 18 2018 High pressure will build in from the west tonight through the weekend.
The cold front continues to make its way southward bringing light precipitation to the area.
/Issued 411 AM CST Thu Jan 18 2018/ Upper low over southwest Texas this morning will track east today and tonight.
A cold front is tracking across the forecast area at this time. Max temperatures were increased a few degrees in several locations, as most locations will have the warmest temperatures this morning ahead of the cold front.
This weekend, high temperatures will be in the lower to middle 40s. As with typical lake effect NEPA and Elmira will be sunnier, drier, and warmer. Weekend will be quiet and mild as high pressure at the surface and aloft builds in. With a rather flat ridge aloft, a rather zonal flow will keep the temperature advection neutral, but increasing sun will help the surface temps above normal with 850 mb temps around 0C, and thickness values around 548dm.