Aikyam-Lab/Synoptic-Bench huggingface dataset:
The warm front (lowest pressure) isn't really into PA yet, but milder air is moving in on the south wind. Very thin clouds over the south should allow temps to drop just a little there, but a light srly wind will make it tough to cool off far below the freezing mark along the MD border. Moisture increases late tonight across the north to the point where a flurry or even a spit or two of (freezing) drizzle are possible. Front/inverted trough sets up as a low pressure just to our north pivots the old front to a SW-NE orientation. Palm tree express? Morning might still be sub-freezing for the north-central mtns.
On Saturday, gusty southwest winds and cooler temperatures will arrive as a cold front approaches Arizona.
A coastal trough developing off the coast will continue isentropic lifting leading to periods of low CIGs/VSBYs as well light DZ/SHRAs through much of the TAF period. due to proximity of the coastal trough and lifting, a mixture of IFR/MVFR BR are expected to continue through much of the TAF period, with CIGs hovering around high end IFR levels.
325 PM CST Fri Feb 9 2018 A cold front, currently located along/near Interstate 40 in western Oklahoma, will continue to push southward across the rest of Oklahoma and north Texas tonight. With the exception of far southeast Oklahoma, temperatures Saturday will be at or well below freezing. There may be enough isentropic ascent that patchy/areas of freezing drizzle or very light freezing rain may develop. Overall, not overly confident that freezing drizzle will develop with rather dry sub-cloud air, but concerned enough that an advisory will be issued. As 85h winds become north and northwest Saturday into Saturday night the chance/risk of freezing drizzle/rain will shift east of the area.
945 AM PST Fri Feb 9 2018 Cooler weather and more coastal clouds are on the way this weekend as high pressure weakens.
158 PM EST Fri Feb 9 2018 Moisture will increase today ahead of an approaching warm front.
1247 PM EST Fri Feb 9 2018 A warm southerly flow takes hold today, as high pressure exits. High pressure exits this period.
With northerly flow working in, much cooler temperatures can be expected relative to yesterday's warmth, with highs in the upper 40s/lower 50s for the lowlands and 30s to lower 40s for the mountains. Lows tonight will range from the 20s for the lowlands to the teens mountains.
Otherwise, expect dry conditions, breezy northwest winds this afternoon, and slightly cooler temperatures.
Meanwhile, a broad upper trough moving across the northern U. is pushing a strong cold front south.
310 PM CST Fri Feb 9 2018 Early afternoon temperatures range from the upper 50s to lower 60s underneath the thicker cloud cover to the lower to mid 70s where some sunshine has actually occurred. Rainfall totals of 1 to 3 inches with isolated 4 inch amounts will be possible through the weekend with the higher totals generally along and south of a line from Livingston to Conroe to Edna.
249 PM CST Fri Feb 9 2018 Models show a cold front sinking across the PAH forecast area tonight colliding with moisture moving northward. There may be a brief period of freezing rain possible in our far northwest counties, but chances and amounts should be minimal, and temperatures in these areas should climb above freezing by late morning.
1230 PM CST Fri Feb 9 2018 /18Z TAFS/ The main concern over the next 24 hours will be gusty winds this afternoon, the wind shift to north behind a cold front tomorrow, and the potential for MVFR CIGs along and behind the front at KABI before 18Z, and south of the front during the morning hours. Then an Arctic cold front moves into the northern Big Country around 09Z and reach Abilene by 12Z with gusty north winds.
Even the lower end snowfall totals would result in another round of hazardous travel by early Saturday morning. Most of the snow with this system will be winding down by mid morning Saturday, followed by cloudy and seasonably cold conditions Saturday afternoon with fresh snow cover and the cold high pressure holding temperatures in the 20s.
317 PM CST Fri Feb 9 2018 An area of snow situated between high pressure over Montana and low pressure over the central Rockies will continue to affect the southwestern part of the CWA into the early evening hours, with minor accumulations of less than one inch expected. The high to the northwest begins to drop southward tonight, becoming centered over western and central South Dakota by morning, and over the South Dakota/Nebraska/Iowa region by Saturday evening. With temperatures starting off in the single digits above zero late this afternoon, expect to see them plummet tonight as the high moves in and skies clear.
Easterly flow will develop a southerly component as the frontal remnants lift into the Carolinas, and mean-layered ridging slides northeast of the Bahamas towards Bermuda.
1216 PM CST Fri Feb 9 2018 Wind shift to the north and then northeast with cold front now entering the area. /issued 539 AM CST Fri Feb 9 2018/ Southerly to westerly breezes early in the day will veer around to the north and northeast behind a backdoor cold front this afternoon and evening. /issued 336 AM CST Fri Feb 9 2018/ A strong cold front is barreling south through the Central Plains states early Friday morning. Some light freezing drizzle is possible across southern and eastern areas by Saturday night as clouds fill in area-wide, and temperatures should fall into the teens for most locations.
1130 AM CST Fri Feb 9 2018 Conditions across the region are forecast to deteriorate ahead of a frontal boundary and area of low pressure that will move across the region on Saturday. /issued 1043 AM CST Fri Feb 9 2018/ Disturbed swly flow aloft will interact with a warm front lifting nwd across our region today, allowing for some sct shwrs possible just about anywhere.
437 PM EST Fri Feb 9 2018 A warm front will lift north through the region tonight and Saturday.
At the surface, strong cold front extends from central MO into the TX Panhandle. So feel that some freezing drizzle will be possible over southeast KS tonight. The main factor that should keep ice accumulation to just a glaze is surface winds remaining out of the north which will continue to pump-in drier air in the lowest 1,000ft. At this time, the highest snow amounts Sat night into Sun morning look to be along and north of I-70 where 1-3 inches will be possible, with lighter amounts to the south. Cold front has moved through and northerly winds are gusty. Freezing drizzle chances have been removed from KRSL based on the current model guidance keeping chances for precipitation further north.
205 PM EST Fri Feb 9 2018 Moisture will increase today ahead of an approaching warm front.
Will also see patchy areas of fog and freezing drizzle along and east of I-25. The advisory may need to be extended into the morning hours for locations along the Colorado state line as the trough aloft slowly moves overhead, generating light snow in the morning with lessening snow chances in the afternoon.
Snow will continue to fall off and on over our southwest counties, with an additional 1-2 inches possible mainly southwest of PIR thanks to the boost of another trough moving through the steady 500mb trough that has been a steady feature of late. Otherwise, the main story this period will be high pressure and clearing trying to build into our northeastern counties.
1101 AM MST Fri Feb 9 2018 Current surface analysis shows arctic boundary well south and west of the area, with low pressure along the boundary over far southeast WY. Arctic high pressure is edging into northern portions of MT and ND. Upper level analysis continues to show low pressure over Hudson Bay, with broad trough covering much of Canada and the northern US. Broad upper trough remains across the region with the upper jet over the northern Rockies through Wyoming into Nebraska. Arctic frontal boundary has pushed south of the CWA early this morning with high pressure building in.
No changes needed with high pressure in control of the weather and thus minimal impacts outside of the cold temperatures. The center of the high will be well to the west, with a decent gradient remaining over our CWA. Winds will be slightly higher with the higher overnight readings though, so we could again approach wind chill advisory criteria.
Quasi block continues off the Pacific west coast which will hold us in this pattern with the deep broad trough across the northern CONUS and western Nebraska in northwest flow. The pattern begins to shift towards the end of the week as a stronger wave tops the west coast ridge and deepens over Baja and then shears out across the southern plains. In response a ridge will try to develop into the central Rockies.
1019 AM MST Fri Feb 9 2018 Broad upper trough remains across the region with the upper jet over the northern Rockies through Wyoming into Nebraska. Arctic frontal boundary has pushed south of the CWA early this morning with high pressure building in.
The continuation of light snow and freezing of ground beneath the recent snow will make for hazardous travel conditions through early this evening. Patchy valley freezing fog could also develop for some across western Montana. If freezing fog occurs, temperatures in these locations may not cool down to the single digits.
1210 PM EST Fri Feb 9 2018 A warm front across Southern Ohio will lift North of the area this afternoon taking the snow with it. The front will sag south as a cold front tonight as low pressure tracks across the Upper Ohio Valley. Warm front lifting north thru the CWA will continue to cause the southern edge of the snow to lift north into Lake Erie. High temps are still expected to eventually rise above freezing for all but the far NW and NE this afternoon. Frontal boundary sinks south as a cold front overnight as low pressure tracks across the Upper Ohio Valley.
256 PM CST Fri Feb 9 2018 A strong cold front is making its way across the South Plains this afternoon.
245 PM CST Fri Feb 9 2018 As clear and cold arctic high pressure remains anchored across the northern plains impacts again will revolve around temperatures and wind chills for the evening and overnight. Temperatures will be a bit warmer than previous morning as westerly winds keep mixing higher than previous mornings. Saturday max temps look to be a bit warmer than the past few days with better mixing with the west to southwest surface winds.
917 AM PST Fri Feb 9 2018 An unsettled weather pattern will begin tomorrow as the first system passes across the region dragging a cold front through the area on Saturday. Gusty, north winds and cooler temperatures can be expected.
The highest chances of rain will be east of I-35 with amounts generally less than two-tenths of an inch. The attention tomorrow turns to the expected cold front which is currently located in the Texas Panhandle and Northwest Oklahoma. The front will be somewhat slow to move until until a trough axis moves south into the Plains Saturday afternoon which forces the front south. Therefore, the main concern in the forecast period will be the temperature forecast behind the front and the threat of some freezing rain or freezing drizzle where temperatures drop below freezing. On the flip side, the GFS and the ECMWF are well above freezing but again, they both are not likely handling the cold airmass well. Will mention the threat of freezing precip in the earlier mentioned areas but not mention any ice accumulations at this time.
312 PM CST Fri Feb 9 2018 (Tonight and Saturday) After much warmer than normal temperatures today, a significant chance will occur as an arctic cold front moves through the area tonight through tomorrow. Generally mild conditions expected for most of the area tonight, with lows dropping into the lower 30s far north, and low to mid 40s for the rest of the area. Southern and eastern areas may see some patchy fog or light drizzle tonight in the warm, moist air mass ahead of the cold front. The cold front is expected to be through the I-20 corridor by around 6 AM Saturday morning, then make it through the rest of the CWA by mid to late afternoon.
Pattern Synopsis/Forecast: Synoptic snow from a low pressure system over the southern Great Lakes region will continue to end as aforementioned system moves eastward. High pressure and some drier air will move in tonight and appears to hold precipitation at bay through at least Saturday. It will be a cold morning Saturday, in the single digits below zero, but will warm into the low 20s, with light winds, and possibly even some sun. There will be another weak area of low pressure system over the Ohio River Valley, but will remain too far south to effect our forecast area. Highs tomorrow, as already mentioned, will be in the low 20s, but should feel much warmer than that.
224 PM CST Fri Feb 9 2018 Currently watching a warm front lift northward from the Gulf of Mexico. Once the front reaches the north, it will begin to combine with a broad upper- level trough that will slowly slide southeastward through the Midwest and Ozarks.
303 PM CST Fri Feb 9 2018 A region of high pressure will continue moving southward across our forecast area tonight with the majority of the region seeing mostly clear skies. This will allow for cooling of temperatures down into the low teens and double digits below zero across much of the Northland. Wind chills are slightly warmer than the previous night with the additional cloud cover and lighter winds.
1157 AM CST Fri Feb 9 2018 WV imagery this morning depicting a broad trof encompassing the CONUS with an amplified ridge hanging off the west coast. At the sfc, very strong high pressure centered over SRN Alberta was building SWD into the NRN high Plains.
1155 AM CST Fri Feb 9 2018 18z TAF Cycle: Cold front has already pushed through panhandles with northeast winds of 15-20 knots. Latest guidance suggest the low cloud deck will break up this afternoon, but given strength of front, can't rule out lingering MVFR through at least early afternoon for KGUY.
1209 PM PST Fri Feb 9 2018 Cooler weather and more coastal clouds are on the way this weekend as high pressure weakens.
Meanwhile, to the south of the front, over southern Florida, upper level high pressure has been the dominating feature. Mostly sunny skies, combined with strong subsidence from the high, has allowed for temperatures to rise into the low 80s along the east coast metro region to mid 80s further inland. Maximum temperatures will again be slightly warmer than normal with low 80s along the east coast metro and mid 80s elsewhere.
500 AM CST Sun Nov 26 2017 Sunday's weather will be very similar to yesterday's, as the Northern Plains remains under the influence of a large upper level ridge and weak pressure gradient.
930 AM EST Sun Nov 26 2017 High pressure builds back in from the west today through Monday.
Winds were east northeast 5 to 10 mph, with temperatures in the lower 70s across the island chain.
932 AM EST Sun Nov 26 2017 High pressure will keep dry conditions across the region into mid week.
Cold front has pushed through our terminals with light northeasterly winds occurring. Early this morning shows a weak cold front making its way through the region, albeit slowly, with little airmass change behind it. Temperatures today will be slightly cooler than yesterday owing to weak cold air advection in the low- levels and more cloud cover. Expecting temperatures to be cooler but still several degrees above average tonight.
1044 AM EST Sun Nov 26 2017 Currently - High pressure extending across Florida and the adjacent bodies of water, along with an area of low pressure in the southeastern Gulf of Mexico, is producing gentle to moderate northeast to east breezes across the Keys. Showers and a few thunderstorms persist along a convergence band streaming into the area of low pressure. Short Term Update - Gentle northeast breezes will continue across the Florida Keys this afternoon due to the high to our north and the area of lower pressure to our west. Gentle to moderate northeast to east breezes will prevail on Keys waters due to high pressure to our north and an area of lower pressure in the southeastern Gulf of Mexico.
421 AM MST Sun Nov 26 2017 An upper level ridge building over the region, combined with a warm front lifting northward across the area today will lead to high temperatures of 20-25F degrees warmer than the average for this time of year. A splitting upper trough will affect the forecast area on Monday, with a cold front dropping southward across the northern plains. 3-5mb/3h pressure rises and steep low level lapse rates will result in a period of 25-35mph sustained winds behind the cold front.
545 AM CST Sun Nov 26 2017 For the 26/12Z TAF period, VFR conditions will prevail as high pressure at the surface settles in across the region. Otherwise, cooler conditions will prevailing across the region today, as drier and cooler air filters into the region behind yesterday's weak cold front. That being said, temperatures will still be 3 to 8 degrees warmer than normal. High pressure will build into the region for the first part of the work week, continuing our very dry weather.
424 AM CST Sun Nov 26 2017 Today looks to be fairly similar to yesterday, only warmer as winds have shifted back to the south. While today's temps will push the area into the 70s, the start to the work week will be even warmer with record highs in the 80s due to the upper level high pressure pushing eastward and bringing downsloping winds on top of southerly flow at the surface.
Chattanooga Airport, TN 61 34 61 37 / 0 0 0 0 Knoxville McGhee Tyson Airport, TN 56 31 59 35 / 0 0 0 0 Oak Ridge, TN 57 31 58 35 / 0 0 0 0 Tri Cities Airport, TN 52 28 57 32 / 0 0 0 0.
617 AM EST Sun Nov 26 2017 High pressure builds back in from the west today through Monday.
643 AM EST Sun Nov 26 2017 A cold front will shift through the area this morning followed by dry high pressure into the middle of the week.
Wave passes and a few hours after sunrise, lingering showers will depart as ridging builds in.
710 AM EST Sun Nov 26 2017 Pacific high pressure will build into the Carolinas through Monday.
719 AM EST Sun Nov 26 2017 A cold front has moved through the region overnight. Mostly cloudy skies are expected across the northwest with partly to mostly sunny skies through Central PA and the Lower Susquehanna Valley.
852 AM EST Sun Nov 26 2017 High pressure will support dry weather and moderating temperature through mid week. Building high pressure will shift low level flow to the west and eventually southwest, helping to dissipate the low clouds by later this afternoon.
944 AM EST Sun Nov 26 2017 Cooler today. High pressure drifts through with milder temperatures through the work week.
An upper level ridge of high pressure will retreat east of the area this morning as our next storm system moves toward the area tonight into Monday, resulting in unseasonably mild air moving into Montana today. A fast-moving cold front will move through the region, producing some rain and mountain snow over the Rocky Mountain Front and across Southwest MT, while returning temperatures back to more normal November readings for much of the coming week. Upper-level ridging retreats east quickly by this afternoon, resulting in an increasing southwesterly jet stream aloft. However, the primary widespread wind threat will be along and behind cold frontal passage across the region tonight into Monday. This cold front and warm Pacific jet will bring a decent amount of moisture into southwest Montana tonight through early Monday afternoon.
548 AM EST Sun Nov 26 2017 High pressure will keep dry conditions across the region into mid week.
Early this morning shows a weak cold front making its way through the region, albeit slowly, with little airmass change behind it. Temperatures today will be slightly cooler than yesterday owing to weak cold air advection in the low- levels and more cloud cover. Expecting temperatures to be cooler but still several degrees above average tonight.
953 AM CST Sun Nov 26 2017 Clear skies are in place across the Tennessee Valley as a 1028 mb area of high pressure builds east from Arkansas toward the area today. Based on current temperatures, believe highs in the lower 60s (60-63 degrees) are possible west of I-65 and in some locations in Cullman and Marshall counties. In northeastern Alabama and higher terrain above 1000 feet, highs in the mid to upper 50s look a bit more reasonable based on the cool start this morning (low temperatures in the lower to mid 30s).
Gusty southwest winds are expected from late this morning through late afternoon in advance of a weak cold front that will approach the region.
1028 AM EST Sun Nov 26 2017 High pressure will build in from the southwest today and tonight while a weak cold front passes north of the region. High pressure will stay in control for most of the upcoming week with fair and seasonably mild weather. The RAP shows the low level moisture melting back slowly this morning and afternoon so I increased the amount of cloudiness in the forecast. With high pressure building in from the SW, drier air will move into the region as the day progresses. Temperatures will be much cooler than the last several days, though close to seasonal norms. High pressure in control with generally clear skies and seasonable temperatures tonight and Monday.
527 AM CST Sun Nov 26 2017 Ridge of high pressure extending from the Great Lakes to the Southern Plains will provide mild and dry weather across central Illinois today. resulting in afternoon high temperatures in the lower to middle 50s. As the high begins to shift east of the region, an increasing S/SW boundary layer flow will keep temperatures warmer tonight than in previous nights. Gusty S/SW winds will bring even warmer air into the region on Monday. GFS/NAM continue to show impressive thermal ridge axis with 15-20C 850mb temps from Iowa southwestward to New Mexico by Monday afternoon. Given sunshine and southerly flow, afternoon high temperatures will rise into the lower to middle 60s.
532 AM EST Sun Nov 26 2017 High pressure will support dry weather and moderating temperature through mid week. The high temperature prognosis for southern zones was modified slightly using National Blend guidance.
1050 AM EST Sun Nov 26 2017 Dry high pressure will build over the area today into the middle of the week.
Low temps will again be in the 50s, except should hold in the lower 60s along the Treasure coast. a reinforcing high pressure system advances eastward toward the mid Atlc coast.
Cold front has pushed south of the area. High pressure builds in behind the front providing sunny skies with near seasonal afternoon temps. North to Northeast winds increase some in the wake of a cold front but should remain below headlines.
947 AM EST Sun Nov 26 2017 Pacific high pressure will build into the Carolinas through Monday.
306 AM PST Sun Nov 26 2017 Areas of fog over coastal areas will dissipate by mid-morning, leaving a more moist and cooler airmass to spread farther inland this afternoon through Monday. It will be much cooler inland on Monday as an upper-level trough passes, accompanied by strong and gusty westerly winds over the mountains and deserts, and the chance for scattered, light rain showers along and west of the mountains.
A warm front crossed from south to north across the Northern Rockies last night, and snow levels are on the rise today as a result. This mild scenario will only last during the day today before a cold front starts to make its way eastward from the Pacific NW. The timing of the cold front still has it crossing central Idaho later tonight, then into western Montana by early Monday morning.
/Issued 246 AM CST Sun Nov 26 2017/ /Today and Tonight/ More quiet weather will occur today and tonight as an upper level ridge continues to exert its influence across the region. Yesterday's weak front did not completely scour out the low level moisture, and the return of southerly winds will aid in transporting higher dewpoints across mainly the central and western counties of North and Central Texas. Overnight lows are expected to be in the upper 40s to around 50 degrees in the central and western counties, but fall a little further into the lower 40s in our eastern counties.