Aikyam-Lab/Synoptic-Bench huggingface dataset:
Chilly Friday, but warmer weather is on the way! 2. THIS MORNING: Skies are gradually clearing, and with high pressure sliding from west to east through the region, temperatures continue to plummet below zero. Temperatures will be a touch warmer than tonight as warm advection increases through the night. This is partially in response to fresh snow cover in the region, but also slightly slow arrival of warmer air aloft.
Light freezing drizzle/drizzle will be possible in the first few hours of the forecast period at KBPK/KLIT. Today Through Friday Night Ongoing winter storm is finally winding to a close today with a lingering band of freezing rain moving from west to east across the state. Frigid Canadian high pressure begins to nose in from the north tonight with temps plummeting to the upper single digits to teens over the northwest and 20s/30s elsewhere. Friday will see additional warming with highs above freezing for most areas outside the Ozarks and Ouachitas.
1027 PM EST Thu Feb 24 2022 Currently - Deep layered ridging is in place across Florida with a ~590 hPa mid level ridge laying under a fairly sharp upper ridge reaching northward out of the northwestern Caribbean Sea. Temperatures will range broadly in the lower to mid level 70s. A ridge across Florida will maintain moderate to fresh easterly breezes across Keys waters through the overnight period.
1129 PM CST Thu Feb 24 2022 An upper trough continues to advance eastward across the Central and Northern Plains this afternoon, and will be located across the Great Lakes Region by Friday morning. Some light snow occurred today with the passage of the trough, and amounts generally ranging from 1/2" to locally 3". At the surface, a light westerly downslope flow will begin to dislodge the Arctic air, with highs topping the freezing mark across southwest for the first time in days.
The low clouds continue to clear from west to east with some cirrus moving across the southeastern half of the area. High clouds will increase during the day Friday, ahead of a trough moving across the northern and central Rockies.
1027 PM MST Thu Feb 24 2022 A deep trough continues to pivot east through the central US, as evident in water vapor imagery. Further upstream, another trough axis extends from eastern Alberta and western Saskatchewan back into western Idaho.
316 AM EST Fri Feb 25 2022 Freezing rain and rain will transition to light snow after sunrise with frontal passage.
/issued 616 PM CST Thu Feb 24 2022/ The Winter Storm Warning has been allowed to expire and a Winter Weather Advisory has been issued in its place to account for some more light additional freezing rain across the advised area.
305 AM EST Fri Feb 25 2022 A mix of snow and freezing drizzle will come to an end around or shortly after the morning commute. Ahead of this areas of freezing drizzle were persisting, but showing signs of diminishing somewhat. Strung out northern stream trough will slowly move through the area this weekend, but cause no real impacts. Temperatures will remain below normal but at least above freezing during the day to allow a slow thaw out. Progressively warmer temperatures will arrive through the upcoming week as additional waves move across the Great Lakes, each one tracking further north than the other. Primarily IFR conditions and periods of freezing drizzle and light snow will persist through approximately 10-11z as an upper level trough swings through.
Southerly flow is increasing across the region which is keeping temperatures much warmer than originally forecast for this evening. A cold front will move across the region this morning with a line of showers, and a low chance of thunderstorms, that will impact all terminals. Brisk SW winds tonight ahead of the cold front will shift to the NW post-frontal. SR Chattanooga Airport, TN 47 55 36 49 40 / 90 20 10 20 60 Knoxville McGhee Tyson Airport, TN 46 54 33 49 37 / 100 50 10 20 50 Oak Ridge, TN 45 53 33 50 37 / 100 40 10 20 40 Tri Cities Airport, TN 48 56 31 48 34 / 90 90 10 10 30 TN.
High pressure over the Pacific Northwest continues to move eastward.
936 AM EST Fri Feb 25 2022 High pressure will remain over the Florida Peninsula today keep the weather dry over the region along with a light easterly wind flow. The temperatures will again be in the mid to upper 80s over most areas this afternoon which will be near record highs for this time of year, except for the east coast metro areas where the highs will only be around 80 degrees. Therefore, the High Risk of rip currents will continue along the east coast beaches of South Florida. The ridge will keep generally easterly flow in place, which will help in alleviating a little the warm temps along coastal locations in the afternoon hours, but still expecting mid to upper 80s over most of SoFlo, except east coast metro areas where they will be around 80.
457 AM EST Fri Feb 25 2022 Temperatures will remain well above normal today with a dry cold front crossing the area this afternoon. Much cooler air will return behind the cold front with temperatures 20 to 25 degrees cooler for the weekend.
A ridge of high pressure will move through the area tonight, but an increasing pressure gradient on the northern periphery of the high should produce a steady west to southwest wind, and prevent a huge dropoff in temperatures. The pressure gradient will continue to tighten across the forecast area ahead of an approaching Canadian cold front.
Slight improvement in lower basins today as return flow begins to develop across the state, bringing in slightly warmer air at the sfc, enough to get temps up into the lower 20s. Saturday night a ridge will be overhead, so skies will be mainly clear. Warmer air will be moving in aloft and westerly flow will result in downslope warming east of the Divide.
431 AM MST Fri Feb 25 2022 At the beginning of the short term period, current RAP analysis depicts the CWA having a westerly flow aloft being underneath the base of a trough. Going into the Friday evening hours, models show the flow turning west- southwesterly as the axis of the trough tilts in a positive direction. On Saturday, forecast models show the west-southwesterly flow continuing during the day before the axis of the trough passes over the CWA around midnight. The warming trend looks to continue into Saturday as well with highs in ranging from around 40 degrees to around 50 degrees followed by overnight lows in the lower to upper teens.
844 AM CST Fri Feb 25 2022 Temperatures have tumbled since midnight across the TN Valley thanks to a cold front that is SE of the CWFA as of this update. CAA has dropped temps from the 60s around midnight to current readings in the middle/upper 30s for much of the Central and NW portions of the area, with several locations in the SE portions of the area still holding on in the lower/middle 40s. Moderating temperatures a tad warmer should make the weekend rain an all liquid event, with lows Sat night in the upper 30s to lower 40s.
SHORT TERM (Now through Saturday): Strong high pressure centered across the Northern Plains early this morning will continue to flow south and spread across the area today. Temperatures are expected to continue to fall into the 30s and the lower 40s across much of the area through mid to late morning as strong cold air advection prevails. Wind chills "feel like temperature" will drop into the low to mid 30s this morning. Lows tonight will mainly be the mid to upper 30s, except for the lower 40s near the coast. Highs on Saturday are expected to reach the upper 40s to the lower 50s.
351 AM CST Fri Feb 25 2022 Arctic high pressure sits over the region this morning keeping temperatures in the teens to thirties below zero, coldest in far NW MN. Impacts from blowing/drifting snow look to be limited given the relatively low wind speeds and warm temps, although some travel impacts may be seen should drifting snow stick to warming surface temps that reach above freezing during the day Saturday.
437 AM EST Fri Feb 25 2022 Low pressure will move well east of the region today. High pressure will build in tonight through Saturday night.
TODAY: A quiet day is expected as high pressure builds back into the region after being displaced by yesterday's snow system. Although winds will gradually increase overnight, wind chills stay warmer than advisory criteria so no headlines are expected. Seasonal temperatures continue through the forecast period with highs in the 30's and lows in the teens with some locally cooler lows possible. WX/vsby: a few flurries possible with the low deck, with a bit better shot for a few afternoon -shsn in WI. Winds: northerly winds look to become more southerly tonight as high pressure nudges in from the west. Speeds look to hold under 10 kts, but will see and uptick on Sat as the high exits and pressure gradient tightens up.
(Today through Saturday afternoon) An upper level trough extends from the Midwest to the Rocky Mountains. The western edge of this trough will begin to move over West Texas and Southeast New Mexico on Saturday. Areas of freezing fog are currently developing across parts of the Permian Basin this morning as a front moves into the area from the east. A Freezing Fog Advisory is in effect until 9 am CST/8 am MST for much of the Permian Basin and central and northern Lea County. High temperatures today are expected to range from the upper 30s across Scurry County to the lower 70s along the Rio Grande.
High pressure slides in behind the departing system which brought the widespread fluffy snow to the region.
Upper level troughing has shifted east, moving the remainder of the snow east out of the state. Behind this system, high pressure is anticipated to build into the region through the weekend. Clearing skies and light winds out of the north will allow temps to dip into single digits for areas north of I-70; areas to the south of I-70 can expect temps in the lower teens. By this afternoon, temps will brush the freezing threshold with highs in the lower 30s. If snow is not gone by today, you can guarantee it will melt away by Saturday as highs rise near seasonable into the lower 40s.
517 AM CST Fri Feb 25 2022 High pressure, light winds and clear skies have allowed the temperature forecast to remain right on track with lows bottoming out in the teens below zero. The overall Northern Plains pattern will feature a slow moving positively tilted upper trough and mid level warm air advection through Saturday morning. Continued with the mention of blowing snow, although Saturday afternoon temperatures will rise above freezing which may help to compact the snow pack. The upper ridging over the western CONUS will then gradually spread to the east as energy flows into the west coast, and then across the western CONUS.
340 AM CST Fri Feb 25 2022 Some patchy freezing drizzle and drizzle seen in parts of southwestern IN and western KY early this morning on radar is expected to move quickly off to the east-southeast before daybreak. Still, with temps staying or dipping below freezing, some black ice development is possible, especially on elevated surfaces. Temps are not forecast to rise above freezing until this afternoon, aided by persistent cloud cover today, especially east of the MS River. Tonight, clouds will be on the general increase, especially west of the MS River as moisture aloft in slightly anticyclonic flow begins to overrun the dome of high pressure at the surface. The WFO PAH forecast area will along the southern edge of faster northwesterly flow and the eastern limb of a slowly progressive ridge to the west.
Cold front has now pushed east of the mid state. High pressure will build in just to our north on Saturday.
Based on current water vapor imagery an upper level low that passed the FA yesterday is now up over WI with a secondary low up stream in the same broad trough. Some H85 temperatures above freezing may move into the far western stack of the combined Panhandles late this afternoon allowing for some western areas to get into the 40s while the eastern Panhandles stay in the 30s. Currently temperatures are in the single digits in the OK Panhandle with the areas to the south in the TX Panhandle in the low to mid teens as if this writing. Though the low clouds may wane into the early afternoon some high clouds will develop and hold back some daytime heating during the afternoon, especially in the eastern combined Panhandles.
Based on radar trends and progression of the trough, we have extended light snow across srn/ern portions of the Snake Plain east to the WY border through about 8 AM, with generally less than 1/2 inch of additional accumulation, but given a lack of help from even high-res guidance, confidence is low and we continue to monitor radar and observational trends for clues as to how the situation is evolving. Clouds will gradually clear out today with temps heading toward the teens to low 20s, as a ridge of high pressure starts to build in across the Great Basin and nrn Rockies. This ridge will provide quiet, dry, sunnier wx with a warming trend throughout the upcoming weekend as well! Beyond this AM, generally held very close to NBM guidance in the forecast with no significant edits.
While 700 mb winds will not exceed 25 kt through Saturday, a strengthening lee trough will be over the area.
639 AM EST Fri Feb 25 2022 Temperatures will remain well above normal today with a dry cold front crossing the area this afternoon. Much cooler air will return behind the cold front with temperatures 20 to 25 degrees cooler for the weekend.
347 AM CST Fri Feb 25 2022 Chilly today but trending warmer over the weekend.
256 AM MST Fri Feb 25 2022 At the beginning of the short term period, current RAP analysis depicts the CWA having a westerly flow aloft being underneath the base of a trough. Going into the Friday evening hours, models show the flow turning west- southwesterly as the axis of the trough tilts in a positive direction. On Saturday, forecast models show the west-southwesterly flow continuing during the day before the axis of the trough passes over the CWA around midnight. The warming trend looks to continue into Saturday as well with highs in ranging from around 40 degrees to around 50 degrees followed by overnight lows in the lower to upper teens.
A trailing cold front now extends down the spine of the Appalachians and is sweeping through Central Alabama this morning. The cold front will bring light to moderate rain showers to many Central Alabama areas through the morning hours. Cooler air will then advect into the area via brisk northwesterly winds with a scattering of over-running rain. We'll then look for a slight decrease in cloud cover, though temperatures north of I-85 will be on the cooler side. A broad high pressure system is forecast to encompass much of the Central CONUS tomorrow, generally centering to our north across the mid Mississippi River Valley, but will weaken with time. This will approach a region of confluent flow/warm air advection at 850 mb thereafter, generally from the ArkLaTex toward the TN Valley, as the low-level ridge centers to our southeast.
341 AM CST Fri Feb 25 2022 High pressure, light winds and clear skies have allowed the temperature forecast to remain right on track with lows bottoming out in the teens below zero. The overall Northern Plains pattern will feature a slow moving positively tilted upper trough and mid level warm air advection through Saturday morning. Continued with the mention of blowing snow, although Saturday afternoon temperatures will rise above freezing which may help to compact the snow pack. The upper ridging over the western CONUS will then gradually spread to the east as energy flows into the west coast, and then across the western CONUS.
Deterministic runs maintain a quasi-zonal upper pattern over the CONUS during the period, except for the development of an upper trough near the west coast today, followed by a slow/steady translation of this system eastward across the southwestern CONUS then over the Southern Plains/TX Saturday, with the bulk of the associated dynamics north of the CWA. Only slightly warmer Saturday.
529 AM EST Fri Feb 25 2022 Freezing rain and rain will transition to light snow after sunrise with frontal passage. Latest RTMA and sfc analysis shows the freezing line has progressed northwards to just south of I-80 as of 08Z this morning. Freezing rain will continue to be a localized issue for the ridge tops across Indiana, Westmoreland, and Fayette counties early this morning even as lower terrain temps push into the 40s. Thus, will allow the Ice Storm Warning to continue for Fayette/Westmo Ridges until that threat has ended. Gusty winds are expected across the higher terrain today, reaching advisory criteria across eastern Tucker County. High pressure will quickly build across the Ohio Valley this evening as low pressure shifts east. Any lingering light snow in the ridges should dissipate overnight.
502 AM MST Fri Feb 25 2022 A weak trough that has dropped down from Wyoming has started bringing snowfall to the area but it's spread a little further south and west than originally thought. By 18Z, the NAMNEST then wants to start putting some low end PoPs over the higher terrain. The trough will continue to be overhead Saturday morning but with minimal available moisture, not expecting any sensible weather. Saturday is looking to be a nice day with some variable clouds over the higher terrain and mostly sunny skies elsewhere. Alas, northerly winds on the backside of this trough will keep cold air advecting in and with the cold air already in place, no bump in highs yet. It should 'feel' warmer though thanks to the increased sunshine.
Chilly Friday, but warmer weather is on the way! 2. THIS MORNING: Skies are gradually clearing, and with high pressure sliding from west to east through the region, temperatures continue to plummet below zero. Temperatures will be a touch warmer than tonight as warm advection increases through the night. This is partially in response to fresh snow cover in the region, but also slightly slow arrival of warmer air aloft. Highs on Saturday reach back above freezing in most locations, with the warmest highs near the lower 40s near the Missouri River.
A northeast-southwest oriented long wave trough persists across the northern and western CONUS early this morning. The strongest upper level winds are to the east of the upper trough axis so we will see the trough gradually filling and propagating off to the east during the next few days. Saturday's high temperatures will be even warmer but still below normal in the low to mid 40s. The upper trough will finally lift out to the east/northeast over the weekend with upper level ridging building east across the northern Rockies.
Any accompanying snow showers with this trough is anticipated to be light to perhaps locally moderate in nature, with little accumulation expected.
204 AM PST Fri Feb 25 2022 Cool and dry through Saturday with widespread freezing low temperatures in the early morning hours. Temperatures trend warmer this weekend.
340 AM MST Fri Feb 25 2022 A weak trough that has dropped down from Wyoming has started bringing snowfall to the area but it's spread a little further south and west than originally thought. By 18Z, the NAMNEST then wants to start putting some low end PoPs over the higher terrain. The trough will continue to be overhead Saturday morning but with minimal available moisture, not expecting any sensible weather. Saturday is looking to be a nice day with some variable clouds over the higher terrain and mostly sunny skies elsewhere. Alas, northerly winds on the backside of this trough will keep cold air advecting in and with the cold air already in place, no bump in highs yet. It should 'feel' warmer though thanks to the increased sunshine.
Meanwhile, temperatures today will be quite chilly, with afternoon highs generally reaching the low to mid 30s, which is around 15 degrees below seasonal averages for late February. Saturday and beyond, a broad longwave ridge of high pressure is expected to develop across the western and central U.
High pressure shifting to the southeast will bring increasing southwesterly flow tonight and especially Saturday. Gusts could reach 35 mph per forecast soundings, and despite temperatures near freezing with clear skies, there should be patchy blowing snow with plenty of fresh snowpack.
211 AM MST Fri Feb 25 2022 Bitter cold air will linger over NE Montana this morning before warmer temperatures move in from the west during the day today. The upper trough that has kept the bitter cold air in place will move to the SE today and NE MT will transition to a warmer NW flow aloft. Then, an upper ridge moves into the area from the west over the weekend.
238 AM PST Fri Feb 25 2022 Freezing temperatures likely in the San Joaquin Valley each morning through the weekend. Another cold night across the area as northerly flow aloft is now in place ahead of the Pacific ridging that will slowly move eastward into the region later this weekend. Tonight's lows will be slightly warmer than last night but still will have many locations reach the freezing mark and even several degrees lower. A freeze warning remains in effect until Saturday morning to address the low overnight temperatures in the San Joaquin Valley. With the slow eastward progression of the ridging eastward, synoptic heights will increase and bring a slow upward trend through the weekend and by Saturday afternoon the high temperatures will be near normal once again.
Arctic high pressure sits over the region this morning keeping temperatures in the teens to thirties below zero, coldest in far NW MN. Impacts from blowing/drifting snow look to be limited given the relatively low wind speeds and warm temps, although some travel impacts may be seen should drifting snow stick to warming surface temps that reach above freezing during the day Saturday.
/issued 318 AM EST Fri Feb 25 2022/ High pressure with strong subsidence remains in place over the region for the next few days, resulting in continued dry weather and well above normal temperatures.
Weak high pressure settles across the area today, which will result in light northwesterly winds becoming southwest this afternoon. Temperatures will be slightly warmer today, but due to poor mixing, still pretty cold with highs only in the 20s, which would still be 15 to 18 degrees below normal. Southwest winds on Saturday will help boost temps significantly into the lower to mid 40s, which would actually be a couple of degrees above normal.
Weak speed convergence south of the Lower and Middle Keys along with a subtle increase in boundary layer moisture has supported isolated light shower activity in the western Hawk Channel and Straits of Florida. High pressure situated over the western North Atlantic will continue to stretch west over the Florida Peninsula and into the eastern Gulf of Mexico.
201 AM MST Fri Feb 25 2022 Bitter cold air will linger over NE Montana this morning before warmer temperatures move in from the west during the day today. The upper trough that has kept the bitter cold air in place will move to the SE today and NE MT will transition to a warmer NW flow aloft. Then, an upper ridge moves into the area from the west over the weekend.
Steady precipitation is exiting the CWA with the cold front. Did allow the Ice Storm Warning to expire on time due to that fact and with temperatures above freezing in the region. Some pockets of freezing drizzle will be possible as temperatures fall back behind the front. Gusty winds are expected across the higher terrain today, reaching advisory criteria across eastern Tucker County. High pressure will quickly build across the Ohio Valley this evening as low pressure shifts east. Any lingering light snow in the ridges should dissipate overnight.
110 AM PST Fri Feb 25 2022 Cool and quiet weather with light easterly breezes is expected today and Saturday as high pressure moves over the region.
410 AM CST Fri Feb 25 2022 (Today and tonight) The surface pressure ridge will pass slowly east of Oklahoma today with relatively light winds. High temperatures today will reach freezing in areas that had the most sleet accumulation with highs in the upper 30s in other areas.