Aikyam-Lab/Synoptic-Bench huggingface dataset:
1050 PM CST Fri Jan 13 2023 (This evening through Saturday) A short wave ridge will dominate the area this evening and overnight until the ridge axis passes overhead early Saturday morning. Upper flow will begin to back to the southwest tomorrow in advance of the next upper level trough moving onshore on the west coast. A very weak short wave trough will be moving overhead on Saturday afternoon but the larger trough to the west will have more of an impact on surface fields. We will see modest surface lee cyclogenesis Saturday afternoon in southeastern Colorado with a surface pressure trough extending southward through eastern New Mexico.
The 500 mb ridge axis over central CO this evening and will continue to translate eastward overnight with an increasing southwesterly flow aloft over the area on Saturday. Varying amounts of high cloudiness continue over Northern Colorado with approaching ridge axis. For tonight and Saturday, the ridge axis slides eastward across the central plains in response to next storm system approaching the west coast. This will create some gusty winds over the higher mountains and exposed east slopes of 30 to 50 mph. Cloudiness may keep temperatures more in the lower to mid 50s over the Front Range and the cooler readings in the over low lying areas.
1015 PM MST Fri Jan 13 2023 Current surface analysis shows frontal boundary now moving slowly east-northeast as a warm front, located across the far eastern CWA this afternoon. Upper level analysis shows ridge over the Rockies, with trough off the west coast. Mild and relatively quiet weather is expected through at least the first half of the holiday weekend as ridge moves over and east of the region this weekend.
538 AM CST Sat Jan 14 2023 (Today through Sunday) Weak ridging aloft will move across through the region today. Some high cirrus riding over the top of the ridge will move across northern areas of the forecast area today. A west to southwest flow aloft will develop over the area Sunday between the ridge sliding east and broad toughing across the western CONUS.
Cold and blustery start to the weekend with wind chills in the lower 30s in some interior and northern areas this morning. With the cold front moved through, temperatures continue to drop. Today the high temperatures will struggle to make it to the upper 50s, with northern counties staying in the low 50s. Tonight temperatures will continue to plummet, with many areas dipping to the low 30s. Winds will begin to lessen overnight as the pressure gradient relaxes and high pressure builds back over the area. The cooler temperatures stick around for a few mornings before creeping back up by mid week.
521 AM CST Sat Jan 14 2023 (Today) Cold start this morning, but south winds will be increasing by this afternoon with warmer daytime temperatures.
Main precipitation type will be rain, but cannot rule out some brief periods for isolated freezing rain.
(Today) Low clouds associated with a passing upper low/trough axis to the east continues to blanket parts of the region this early Sat morning, although latest blended guidance does have this cloud cover diminishing later this morning. High pressure out of the Plains states will then begin to build into much of the region later today, helping to maintain quiet/seasonably cool conditions well thru the afternoon hrs. Weak cold air advection courtesy of a NNW flow will translate into afternoon highs struggling to climb past the lower/mid 40s range for most spots.
A trough will approach tonight, trending snow chances back up across the west as well as southern Wyoming through Sunday. The bulk of the energy and moisture associated with this trough will pass to our south.
Temperatures will resume a warmer- than- normal trend by Sunday with fair and dry conditions to end the weekend.
High pressure at the sfc, and compact upper-lvl ridging looks to drive the local wx pattern for one more day, w/ settled condns and cooler temps prevailing thru the day Sat. By Sun, high pressure wl begin drifting E/wrd, w/ Srly flow resuming over the FA.
A dry continental airmass will continue to be settled across the area in the short term and this will allow is to turn cooler quickly after sunset with northerly winds becoming light and variable overnight with high pressure centered overnight. Clear skies tonight continue and we will dip back to the freezing mark for most and upper 20s in eastern Mississippi as radiative cooling maximizes.
527 AM CST Sat Jan 14 2023 (Today) Low clouds associated with a passing upper low/trough axis to the east continues to blanket parts of the region this early Sat morning, although latest blended guidance does have this cloud cover diminishing later this morning. High pressure out of the Plains states will then begin to build into much of the region later today, helping to maintain quiet/seasonably cool conditions well thru the afternoon hrs. Weak cold air advection courtesy of a NNW flow will translate into afternoon highs struggling to climb past the lower/mid 40s range for most spots.
Persistent stratus would hold temperatures to the low-mid 30s today. Otherwise the low cloud deck has been remaining consistent. The additional cloudiness will keep temperatures toward the cooler side of guidance for highs today.
Upper level troughing will remain over the region through the weekend for additional showers.
Niwot Ridge and Berthoud Pass are gusting in the 50s, but those stronger winds so far are limited to areas above 9000 feet. The other cold spot is the lower elevations of Grand county which never warmed up yesterday and is around zero again. We cooled today's highs a bit here, but still think the colder spots will get to around freezing today as there should be some mixing down into those shallow cold pools. An upper level trough moving over Colorado will bring cooler unsettled weather to the forecast area Sunday and Sunday night. East of the mountains, models are showing weak upper low closing off over far Northeastern Colorado Sunday evening then moving into Nebraska overnight.
Otherwise, the winds are keeping the area well mixed in the lower levels preventing fog development to become more than localized. 500mb ridge continues to transverse across the central Northern Plains through the weekend. During this time, winds will breezy out of the south supplying the region with much warmer temperatures. A short wave rides along the ridge this afternoon, and with warm air advection moving through we could see the isolated chance of a few flurries or mixed potential in our far NW area towards Towner, Ramsey, and Benson county. Winds will begin to decrease by the afternoon hours Sunday, with mixing in the lower levels becoming limited.
We will see a lot of sunshine today, but still a bit on the cooler side with afternoon high temperatures forecast to reach the low to mid 50s. As high pressure exits, we will see winds shift to the south bringing some moisture back into the area.
301 AM CST Sat Jan 14 2023 Summary: Abnormally warm temperatures for this weekend with highs climbing into the low to mid 30s by Sunday.
Upgraded portions of west central and southwest Montana from a Winter Weather Advisory to a Winter Storm Warning to account for increasing threats and resultant impacts from freezing rain. Ongoing and increasing freezing rain being reported across western Montana and has lead to degraded travel conditions, particularly on shaded roadways, road surfaces that have not been previously treated, and/or side streets and secondary roadways across west central and southwest Montana. A mix of rain, snow, and/or freezing drizzle will continue to be possible at all terminals through roughly 14/1800Z before precipitation tapes off from south to north.
(Today through Sunday Night) After a cold start this morning, temperatures will be warming into the lower to mid 60s this afternoon. This will help with warmer temperatures tonight. with lows in the lower to mid 40s over our northern CWA. Lows tomorrow night should range from the lower to mid 60s.
A mid/upper ridge will also translate across the area bringing rising heights/increasing thickness and rising temperatures across the region over the weekend. Above normal highs in the 50s can be expected today with some locations seeing highs in the low 60s on Sunday.
(Today) Cold start this morning, but south winds will be increasing by this afternoon with warmer daytime temperatures.
639 AM EST Sat Jan 14 2023 High pressure will build over the region this weekend.
A dry start to the weekend as a ridge of high pressure builds across the FA. For Sunday, mid to upper level ridge axis will be centered over the Ohio Valley allowing for mostly sunny skies and a warming trend.
356 AM MST Sat Jan 14 2023 Current surface map places warm front across the central Dakotas with lee side trof across Montana/Wyoming. Weak cold front slips through early Sunday, knocking highs back into the 30s/40s.
Due to the warm air aloft and the shallow layer of cold air at the surface, precipitation will be in the form of freezing rain or changing over to rain as some of the warmer air mixes down. On Sunday a cold front moves through and brings temperatures down closer to average.
508 AM CST Sat Jan 14 2023 (Tonight through Sunday night) Key Messages: - Onshore flow returns today - Mostly sunny - Winds increase overnight and into Sunday We will have quiet weather through Sunday with high pressure in place. Onshore flow will return today, which will lead to a gradual increase in moisture and afternoon high temperatures a few degrees warmer on Sunday than for today. Winds will increase overnight tonight and into Sunday as an area of low pressure moves across the Texas Panhandle, tightening our pressure gradient.
531 AM CST Sat Jan 14 2023 Summary: Abnormally warm temperatures for this weekend with highs climbing into the low to mid 30s by Sunday.
340 AM MST Sat Jan 14 2023 As of 09Z, the 500mb ridge axis was centered over our area and satellite showed high clouds continuing to stream in from the west. Into the day today, the upper-level ridge is expected to break down with the next approaching trough. Overnight lows fall into the low-20s to low-30s. On Sunday, ceilings lower in the afternoon as the upper trough nears the area.
444 AM MST Sat Jan 14 2023 As of 09Z, the 500mb ridge axis was centered over our area and satellite showed high clouds continuing to stream in from the west. Into the day today, the upper-level ridge is expected to break down with the next approaching trough. Overnight lows fall into the low-20s to low-30s. On Sunday, ceilings lower in the afternoon as the upper trough nears the area.
(Tonight through Sunday night) Key Messages: - Onshore flow returns today - Mostly sunny - Winds increase overnight and into Sunday We will have quiet weather through Sunday with high pressure in place. Onshore flow will return today, which will lead to a gradual increase in moisture and afternoon high temperatures a few degrees warmer on Sunday than for today. Winds will increase overnight tonight and into Sunday as an area of low pressure moves across the Texas Panhandle, tightening our pressure gradient.
Dry weather prevails for the weekend as upper level ridging takes hold over the central CONUS today and tomorrow. Mid-level water vapor imagery depicts this with the upper level trough axis over the mid-Atlantic and anticyclonic moisture pattern cresting over the Rockies. The expansion of this clearing through the morning will be dependent on any subtle backing of the low level flow, which would help divert Lake Huron moisture east of the cwa. 00z RAOB) allow daytime highs to recover into the low to mid 30s with the help of increased solar insolation and the weakening subsidence inversion. Should see a similar day on Sunday, although temperatures will be slightly warmer (upper 30s) in the wake of modest thickness advection and southwest flow along with increasing upper level moisture/cloud cover.
541 AM EST Sat Jan 14 2023 (Today and tonight) The pressure gradient will weaken today as a large area of low pressure off the US East Coast moves farther into the Atlantic. High pressure will build in in its wake. As high pressure builds in, winds become light to calm overnight tonight. Went with a blend of NBM25 and consensus MOS guidance for tonight, yielding lows in the middle to upper 20s outside of the urban cores and beaches, which will be in the lower 30s.
838 AM EST Sat Jan 14 2023 High pressure will build over the region this weekend.
(Through Tonight) High pressure will build from the northwest through the night, with cold advection continuing. There will still be a tight pressure gradient over the waters, between the exiting low to the east and the high to the northwest. Lows will be closer to the freezing mark near the coast.
159 PM CST Sat Jan 14 2023 The milder temperatures and gusty south winds will continue on Sunday in advance of the approaching western conus upper trof as it moves east over the Colorado Rockies Sunday afternoon.
12Z synoptic & sfc analysis this morning indicate ridging at the sfc & aloft centered over TX & S Plains. Cool thermal trough in N & NE areas (i. A dry continental airmass will continue to be settled across the area in the short term and this will allow is to turn cooler quickly after sunset with northerly winds becoming light and variable overnight with high pressure centered overnight. Clear skies tonight continue and we will dip back to the freezing mark for most and upper 20s in eastern Mississippi as radiative cooling maximizes.
1055 AM EST Sat Jan 14 2023 High pressure will only slowly build in from the west. Temperatures will start to get back to warmer-than-normal levels on Sunday.
134 PM MST Sat Jan 14 2023 As of 09Z, the 500mb ridge axis was centered over our area and satellite showed high clouds continuing to stream in from the west. Into the day today, the upper-level ridge is expected to break down with the next approaching trough. Overnight lows fall into the low-20s to low-30s. On Sunday, ceilings lower in the afternoon as the upper trough nears the area.
A cold front is on track to swing across the region this afternoon and evening, ushering in another round of widespread rain and higher elevation snow.
South winds will increase across our region on Sunday as the pressure gradient tightens ahead of an approaching low pressure system.
Overall, winds have decreased as high pressure continues to build into the region from the west. The coldest temps look to reside near the lower spots such as along and near the Pearl and Escatawpa Rivers. We will see a lot of sunshine today, but still a bit on the cooler side with afternoon high temperatures forecast to reach the low to mid 50s. As high pressure exits, we will see winds shift to the south bringing some moisture back into the area.
1215 PM EST Sat Jan 14 2023 Decreasing clouds today, highs in the low to mid 30s.
1137 AM CST Sat Jan 14 2023 12Z synoptic & sfc analysis this morning indicate ridging at the sfc & aloft centered over TX & S Plains. Cool thermal trough in N & NE areas (i. A dry continental airmass will continue to be settled across the area in the short term and this will allow is to turn cooler quickly after sunset with northerly winds becoming light and variable overnight with high pressure centered overnight. Clear skies tonight continue and we will dip back to the freezing mark for most and upper 20s in eastern Mississippi as radiative cooling maximizes.
953 AM MST Sat Jan 14 2023 As of 09Z, the 500mb ridge axis was centered over our area and satellite showed high clouds continuing to stream in from the west. Into the day today, the upper-level ridge is expected to break down with the next approaching trough. Overnight lows fall into the low-20s to low-30s. On Sunday, ceilings lower in the afternoon as the upper trough nears the area.
1129 AM CST Sat Jan 14 2023 (Today through Sunday Night) After a cold start this morning, temperatures will be warming into the lower to mid 60s this afternoon. This will help with warmer temperatures tonight. with lows in the lower to mid 40s over our northern CWA. Lows tomorrow night should range from the lower to mid 60s.
Low temperatures tonight will drop into the low to mid 20s with variable, calm winds. These calm winds coupled with an inversion layer and some low-level moisture present in model soundings may cause the formation of patchy, freezing fog in the early late night/early morning hours and will need to be monitored throughout the evening for coverage area expansion dependent on cloud cover.
249 PM EST Sat Jan 14 2023 (This afternoon through Sunday) High pressure across the Mississippi River Valley will build eastward tonight as a low pressure system moves up the eastern seaboard. The gradient will remain tight for the remainder of the afternoon and early evening but should begin to relax overnight as the high center moves overhead.
207 PM EST Sat Jan 14 2023 High pressure will build over the region for the rest of this weekend.
Gusty southerly winds will continue through the afternoon and last into the evening and overnight hours as the region remains between surface ridging to the southeast and a deepening Lee cyclone to the west.
Sunday, an advancing trough moves into the area throughout the day. The northern counties will again be in cloud cover resulting in cooler temperatures perhaps struggling to get out of the 30s for highs.
Further to the west in the vicinity of the Lower Keys, cloud cover remains a bit more stubborn, as cold air continues to advect over relatively warmer sea surface temperatures over the Gulf of Mexico. Temperatures at all observation locations in the Florida Keys are currently in the lower to mid 60s. Latest surface analysis places a 1029 mb area of high pressure centered over the Mississippi Valley. With a departing strong cold front now clearing the Bahamas and approaching as far south as the Caribbean, a tight pressure gradient continues, resulting in breezy to windy conditions for the Florida Keys. As high pressure slowly slides eastward into the Western Atlantic, breezes will slacken as they clock to the north, then to the northeast to east, and eventually to the east to southeast throughout the week.
1243 PM EST Sat Jan 14 2023 (Today and tonight) The pressure gradient will weaken today as a large area of low pressure off the US East Coast moves farther into the Atlantic. High pressure will build in in its wake. As high pressure builds in, winds become light to calm overnight tonight. Went with a blend of NBM25 and consensus MOS guidance for tonight, yielding lows in the middle to upper 20s outside of the urban cores and beaches, which will be in the lower 30s.
1135 AM CST Sat Jan 14 2023 The clouds have finally departed as cool high pressure settles over the region today. Winds will be light and after a cold start temps will warm into the lower to middle 40s this afternoon.
Tonight and Sunday Low clouds were doing a better job of breaking up this afternoon with the dry air winning out and helping to mix the moisture trapped below the low level inversion. While the low clouds have cleared in many places, middle and high clouds are starting to drift in from the west. Went on the warmer side of guidance with lows in the low to middle 20s. Sunday Night Through Saturday A slow moving low pressure system will bring another round of mainly rain, to central and east-central Wisconsin, and a wintry mix to the north starting Sunday night.
Despite the sunshine, strong CAA out of the north will prevent much warming during the day with afternoon highs only expected to get into the low 40s.
Temperatures today will remain in the low 30s given the expected cloud cover.
1045 AM CST Sat Jan 14 2023 The clouds have finally departed as cool high pressure settles over the region today. Winds will be light and after a cold start temps will warm into the lower to middle 40s this afternoon.
1037 AM EST Sat Jan 14 2023 Current temperatures are running 3-5 degrees warmer than previously forecasted. Given the clearing of cloud cover as high pressure continues to move over the region, and a slightly higher sun angle as we continue to increase our daylight time, high temps for today have been nudged upward a few degrees. (Today and tonight) The pressure gradient will weaken today as a large area of low pressure off the US East Coast moves farther into the Atlantic. High pressure will build in in its wake. As high pressure builds in, winds become light to calm overnight tonight. Went with a blend of NBM25 and consensus MOS guidance for tonight, yielding lows in the middle to upper 20s outside of the urban cores and beaches, which will be in the lower 30s.
103 PM EST Sat Jan 14 2023 High pressure will only slowly build in from the west. Temperatures will start to get back to warmer-than-normal levels on Sunday.
Temperatures begin to rebound back near normal, and potentially slightly above normal near Chattanooga, as southwesterly boundary layer flow begins to advect warmer air late in afternoon. Otherwise, high pressure keeps us dry during the short term.
1142 AM CST Sat Jan 14 2023 Summary: Abnormally warm temperatures for this weekend with highs climbing into the low to mid 30s by Sunday.
(This evening through Sunday) A deep trough was to our east over the Carolinas while amplified ridging was over the Southern and Central Plains.
From synopsis, high pressure established across the Southeast United States in the wake of a strong cold front will bring fresh to strong northwest to north breezes this afternoon through early Sunday.
1152 AM CST Sat Jan 14 2023 (Tonight through Sunday night) Key Messages: - Onshore flow returns today - Mostly sunny - Winds increase overnight and into Sunday We will have quiet weather through Sunday with high pressure in place. Onshore flow will return today, which will lead to a gradual increase in moisture and afternoon high temperatures a few degrees warmer on Sunday than for today. Winds will increase overnight tonight and into Sunday as an area of low pressure moves across the Texas Panhandle, tightening our pressure gradient.
Lows will fall again near freezing in the W to mid-upper 20s in the E Sun morning. Sunday: As mean ridge axis shifts E over the SE states/Atlantic seaboard, low-level return flow & WAA settle in. Increased moisture in the low-levels will bring some low clouds for areas along & W of the MS River corridor, with most moving in by late aftn to evening.
It took a while for the low stratus to finally move east and dissipate, but they have and now is time to try to get as much sun as you can today, as the gloomy weather will return most of the upcoming work week. Winds remain light and out of the south today, as high pressure passes through the south.
(Rest of today through Sunday) The mid-level low associated with the frontal boundary that cleared across South Florida yesterday will enter the waters off the Mid- Atlantic United States today with a deep-layered area of high pressure advancing eastward. With this ridge of high pressure building in over the eastern third of the country, the northerly flow will be preserved tonight though it should become lighter after dark as the pressure gradient eases. Some forecast challenges remain with regards to the wind but confidence is growing in a cooler trend with less wind that will favor frost development over a large portion of the southern Florida peninsula tonight into Sunday morning with the potential of a freeze over portions of Glades, Hendry, inland Palm Beach, and inland Collier Counties.
High pressure will build over the region this weekend.
1002 AM MST Sat Jan 14 2023 Current surface map places warm front across the central Dakotas with lee side trof across Montana/Wyoming. Weak cold front slips through early Sunday, knocking highs back into the 30s/40s.
With clearing skies and winds becoming light overnight, lows are expected to tumble into the low to mid 20s areawide - which will be the coldest temperatures we have seen so far this month. Increasing south winds on Sunday night will keep temps significantly warmer than what we will see tonight, with lows in the upper 20s to upper 30s.