Aikyam-Lab/Synoptic-Bench huggingface dataset:
This is due to a ridge axis that sits very close to the Florida Keys. Given the amount of sun, we have already warmed up into the upper 70s to near 80 with dew points still muggily (new word?) in the lower 70s. Ridge axis will slide back southward later this evening in response to an approaching cold front. Said cold front is currently entering the northern Gulf of MExico waters from near the Mississippi Delta. Dense Fog Advisory remains in effect across the outer Gulf waters north of the Lower Keys. A cold front is expected to bleed through Keys waters beginning late tonight. A reinforcing cold front is expected heading into this weekend.
1229 PM EST Tue Dec 31 2024 A cold front will cross the area tonight, followed by a cooling trend through the rest of the week with much colder air for the weekend. The fog ends later this morning as boundary layer winds kick up ahead of an approaching cold front, with sfc gusts up to 15-25 mph this aftn. Temps today a bit warmer than those of yesterday. Wednesday we sit in CAA behind the near term front, temps dropping by about 10 degrees and ending up near seasonable; highs in the mid to upper 50s with lows near freezing.
A ridge axis lies nearby and is maintaining a southerly wind. The ridge axis will slide southward overnight in response to an approaching cold front.
2025 will kick off the same way that 2024 ended in the midst of an Active pattern with a series of upper troughs that will bring chances of a mix of rain and mountain snow across the Silver State. This pattern will see quick moving troughs interspersed with brief breaks of fair weather through the first week and one half of the new year. New Years Eve through New Years Day Upper level ridging to the southwest will keep any planned New Years festivities tonight quiet, dry, yet cool under increasing clouds. Temperatures around midnight tonight will be in the upper teens to upper 20s with warmer temperatures across the western half of NV due to higher cloud cover. Temperatures New Years day morning will be in the low teens to upper 20s, with again warmer temperatures west due to increasing clouds.
As this cold front pushes across the area, winds will start to shift to the northwest as cold air advection kicks in later this afternoon. As high pressure settles in overnight, gradient will relax, but light sfc wind will continue. High temperatures Wednesday will range from the upper 40s across the northern portions of the CWA to the lower 60s across the southern portions.
1020 AM EST Tue Dec 31 2024 A cold front will cross the area tonight, followed by a cooling trend through the rest of the week with much colder air for the weekend. The fog ends later this morning as boundary layer winds kick up ahead of an approaching cold front, with sfc gusts up to 15-25 mph this aftn. Temps today a bit warmer than those of yesterday. Wednesday we sit in CAA behind the near term front, temps dropping by about 10 degrees and ending up near seasonable; highs in the mid to upper 50s with lows near freezing.
359 PM MST Tue Dec 31 2024 - Cold and unsettled conditions will continue through the rest of this week - Arctic front will bring more chances for snow and even colder temperatures this weekend, especially over northwest through central SD Current WV imagery and upper air analysis depict well defined upper level low spinning over OH/IN. The Northern Plains sits under northwest flow with a building ridge over the west coast.
1147 AM CST Tue Dec 31 2024 - Cooler temps today compared to the last several days with near or slightly cooler than average highs expected to continue through the work week.
410 PM EST Tue Dec 31 2024 A cold front will quickly move through the region this evening, followed by high pressure through the weekend. At the surface, a dry cold front will be located just to our west early this evening. Mostly clear skies are expected after midnight as drier High pressure builds in from the west.
1242 AM CDT Wed Apr 16 2025 Calm and cooler conditions prevail across the area this evening. /DL/ Tonight and Wednesday: High pressure is building in today in the wake of a cold front.
430 AM EDT Wed Apr 16 2025 Rain and snow showers will end this morning as high pressure builds in.
243 AM CDT Wed Apr 16 2025 Forecast discussion for routine morning forecast issuance - Elevated fire weather conditions will be possible this afternoon due to relative humidity readings in the low to mid 20s, locally lower in sandy soil areas.
1223 AM CDT Wed Apr 16 2025 Latest water vapor imagery shows upper trough axis over southeast CONUS is moving steadily eastward, and model data indicates that the trough will be off the east coast by early Wednesday with ridging, both surface and aloft, building over our local area through Wednesday night. Surface front has moved south across the area this morning and much drier and somewhat cooler air will be building into the region tonight through Wednesday night. Daytime highs on Wednesday will be in the low to mid 70s across the entire area (but with much lower dewpoints and less humidity). Overnight lows both tonight and Wednesday night will be in the 40s for all inland locations and in the low to mid 50s closer to and along the coast.
1208 AM EDT Wed Apr 16 2025 Showers drop in coverage and transition to snow north of I-80 and in the ridges tonight.
1152 PM EDT Tue Apr 15 2025 - Additional sprinkles possible this evening before becoming drier overnight with lows near the freezing mark.
154 AM EDT Wed Apr 16 2025 A passing light shower may accompany a cold front this afternoon through early this evening.
Some mid and high clouds over the area with west to east upper level jet on south side of upper low in northeast Alberta extends from Washington state to North Dakota. The upper level flow is westerly from Alberta into Manitoba and within this is a short wave moving toward Saskatoon with a surface cold front. Warmer today with highs upper 50s to mid 60s. If temps are 1-2 deg warmer or dew pts 1-2 deg lower then that area from Baudette to Park Rapids may indeed move into the near critical range with RH blo 25 pct.
Onshore flow quickly returns promoting warmer temperatures tomorrow and beyond. Expect highs today to range from the low 80s to low 90s and tomorrow from the low 80s to mid 90s. Overnight lows will range in the low to mid 60s tonight and Wednesday night.
134 AM CDT Wed Apr 16 2025 Following a very warm afternoon, mid-evening temps have fallen off rapidly since sunset given the dry air in place, as sfc ridging is anchored from the Ozarks S into E TX/Lower MS Valley. This sfc ridging should continue to slide ESE into the MS Valley overnight, with good radiational cooling conditions expected as the patchy cirrus noted on the evening satellite imagery over portions of OK continues to gradually erode as it approaches the region. The GFS has initialized best with the current cu field, which has just recently shown a slow Nwd shift between ATT and CLL, with this trend expected to continue overnight as the H850 ridge shifts SE towards Sabine Pass and SW LA through daybreak Wednesday.
While there will not be enough moisture in place out ahead of the front to support any shower activity, there will be just enough moisture in the lower levels to support some patchy fog development over the interior portions of Southwest Florida overnight. Low temperatures tonight will drop into the mid to upper 50s across interior portions of Southwest Florida and into the lower to mid 60s along the coasts. High pressure will build back in fairly quickly behind the front, providing a return to an easterly flow component with not only the sea breeze on Tuesday but through the rest of the short term forecast period.
Then more valley rain/mountain snow will develop during the afternoon and especially evening as deeper moisture pinwheels from the north around the big low pressure area over southeastern Canada. Accumulating snowfall will primarily be confined to the higher elevations of the Adirondacks and Green Mountains, especially given the April sun angle and limited snowfall rates.
High pressure builds in from the west today and tonight for tranquil weather overall. Discussion: Tranquil weather is on tap for the forecast area today and tonight as high pressure builds into the region. Temperatures will be a little warmer than yesterday, and mixing is once again expected to be fairly deep. Yesterday afternoon saw some RH values in the teens, and while the HRRR is often times too aggressive with how much it mixes out the low levels, it may be more correct than other guidance. That's especially true given we'll be warmer than yesterday.
(Today and tonight) The upper trough axis has pushed east leaving the area in deep layer northwest flow.
301 AM EDT Wed Apr 16 2025 Rain and snow showers will end this morning as high pressure builds in.
Water vapor imagery highlights a retrograding mean-layer ridge over Mexico, and a broad upper-level trough skirting northern Florida and the Atlantic Bight. WPC analyzes a cold front along this moisture axis, and surface observations suggest some stratocumulus and a 10 degree drop in dewpoint temperatures across the front. Temperatures across the Keys are near 70 with dewpoints in the lower to mid 60s. High pressure currently over the Mississippi River Valley will have subtropical aspirations and will end up as a large anticyclone in the western North Atlantic over the next couple of days.
150 AM MDT Wed Apr 16 2025 KEY MESSAGES: * Cold front this morning will turn winds to the north with gusty winds expected today.
1010 AM EDT Wed Apr 16 2025 Cooler and breezy with mountain snow showers into Thursday.
(Today through Thursday Night) Warm air advection returns to the area, and thus temperatures are expected to be a few degrees warmer than yesterday's highs. Inland areas will top out in the low to mid 80s while the coast will experience highs in the mid to upper 70s. Thursday will begin a transition in the synoptic pattern as an upper-level ridge axis moves overhead. Cloud cover Thursday night will act as a blanket over SE Texas, locking in warmer temperatures during the overnight hours.
816 AM EDT Wed Apr 16 2025 Drier weather expected early afternoon with building high pressure.
Tonight ridging aloft will move over our CWA from the west.
A southerly flow develops Thursday bringing warmer temperatures and the possibility of a few showers overnight.
Low pressure system is working its way here from the north. We will still see warm conditions across the region today with highs in the Snake Plain and Magic Valley likely in the low 70s once again. On Thursday, the low will move overhead bringing noticeably colder temperatures and better chances for precipitation across the region.
(Today through Thursday) -High fire danger conditions for North and Central GA due to low relative humidity and dry vegetation -Warm and dry today and Thursday High pressure and NW flow will dominate the weather pattern today. A little cooler in northeast GA and higher elevations with forecast highs ranging from the mid 50s to mid 60s. Dry and warmer on Thursday. The midlevel ridge will slide overhead with high pressure nudging off the East Coast.
Meanwhile, downstream teleconnections from a trough digging into the west coast will help upper level heights to build across the southeast states, signaling the start of a warming trend for us.
The remainder of the forecast period will be much like today, with high pressure maintaining its hold on the sensible weather pattern. Temps will approach 90 degrees over the weekend, as the upper ridge moves over the forecast area.
Mid to low level clouds are streaming over the area as cold front moves across the peninsula. High pressure begins to build over the state. On Thursday, a slightly cooler start with lows in the upper 40s north to low 60s south.
843 AM EDT Wed Apr 16 2025 Cool and dry high pressure will build in from the west through tonight before shifting offshore on Thursday.
629 AM EDT Wed Apr 16 2025 (Today and tonight) The upper trough axis has pushed east leaving the area in deep layer northwest flow.
527 AM EDT Wed Apr 16 2025 An upper level trough axis will be over the New England and Mid Atlantic Coast today, creating a brisk Northwest wind and more flurries and scattered narrow bands of snow showers. Clearing skies and decreasing wind will accompany the approach of a ridge of high pressure at the surface and aloft tonight and Thursday.
Some mid and high clouds over the area with west to east upper level jet on south side of upper low in northeast Alberta extends from Washington state to North Dakota. The upper level flow is westerly from Alberta into Manitoba and within this is a short wave moving toward Saskatoon with a surface cold front. Warmer today with highs upper 50s to mid 60s. If temps are 1-2 deg warmer or dew pts 1-2 deg lower then that area from Baudette to Park Rapids may indeed move into the near critical range with RH blo 25 pct. As this occurs and 500 mb trough deepens over the Rockies, flow aloft becomes more southwest heading into Thursday allowing for increased moisture to move northeast.
635 AM EDT Wed Apr 16 2025 Cool and dry high pressure will build in from the west through tonight before shifting offshore on Thursday.
Isolated to scattered rain showers and isolated thunderstorms are expected this afternoon ahead of a cold front.
1016 AM EDT Wed Apr 16 2025 Stacked low pressure over Quebec will continue to circulate a wealth of clouds and chilly air across the region today. High pressure currently over the Upper Great Lakes will move over our region on Thursday.
657 AM CDT Wed Apr 16 2025 (Today through Thursday Night) Warm air advection returns to the area, and thus temperatures are expected to be a few degrees warmer than yesterday's highs. Inland areas will top out in the low to mid 80s while the coast will experience highs in the mid to upper 70s. Thursday will begin a transition in the synoptic pattern as an upper-level ridge axis moves overhead. Cloud cover Thursday night will act as a blanket over SE Texas, locking in warmer temperatures during the overnight hours.
620 AM CDT Wed Apr 16 2025 Updated aviation portion for 12Z TAF issuance - Elevated fire weather conditions will be possible this afternoon due to relative humidity readings in the low to mid 20s, locally lower in sandy soil areas.
625 AM EDT Wed Apr 16 2025 Cooler and breezy with mountain snow showers into Thursday.
Then the cold front blasts across the state Wednesday evening. With temperatures stuck in the low to mid 30s through the day, along with moderate snowfall rates, feel the probabilities remain high for significant accumulations in some lower elevations. The cold front sweeps southward across the state overnight, bringing quickly dropping cigs and increasing precipitation, along with an abrupt wind shift from the north.
652 AM EDT Wed Apr 16 2025 An upper level trough axis will be over the New England and Mid Atlantic Coast today, creating a brisk Northwest wind and more flurries and scattered narrow bands of snow showers. Clearing skies and decreasing wind will accompany the approach of a ridge of high pressure at the surface and aloft tonight and Thursday.
With upper ridging in place, dry conditions will continue over the area today, along with the lower humidity values. Upper ridging will keep dry conditions in place Thursday, but it will be breezy, as southerly winds will be on the increase. The increased winds should also yield warmer temperatures, as highs are forecast to climb into the mid to upper 80s areawide.
1032 AM EDT Wed Apr 16 2025 Drier weather expected early afternoon with building high pressure.
201 AM PDT Wed Apr 16 2025 AN UPPER-LEVEL LOW PRESSURE SYSTEM IS EXPECTED TO BRING CHANCES FOR ISOLATED AFTERNOON AND EVENING MOUNTAIN THUNDERSTORMS TODAY AND TOMORROW, ALONG WITH AN INCREASED DELTA BREEZE.
Some strato-cu is coming down the west coast of Florida and moving across the Lower and Middle Keys. Temperatures are climbing into the upper 70s, while dew points are staying comfortably in the lower to mid 60s. Lastly, a decaying cold front just south of Lake Okeechobee is trudging southward and looks to pass through in the late afternoon and evening. The tail end of a decaying cold front will brush through Florida this afternoon and evening. On Thursday, high pressure will rebuild and expand across the Florida Keys.
531 AM EDT Wed Apr 16 2025 Rain and snow showers will end this morning as high pressure builds in. Dry weather will then continue through Thursday as the high moves east across the region.
626 AM CDT Wed Apr 16 2025 (Today through Thursday) The subtropical ridge gradually works east across Deep South Texas and Northern Mexico through Thursday, maintaining dry air aloft. At the surface, low pressure settles into the Plains into Thursday as high pressure holds across the eastern Gulf, enhancing the pressure gradient along the lower Texas coast. A brief and focused Wind Advisory may be needed in the lower to mid RGV or just across Cameron Co.
Then the cold front blasts across the state Wednesday evening. With temperatures stuck in the low to mid 30s through the day, along with moderate snowfall rates, feel the probabilities remain high for significant accumulations in some lower elevations. A cold front will drop into northern Wyoming late Wednesday afternoon into Wednesday evening, with a wind shift from westerly to northerly at KCOD/KWRL. Wind will increase at most terminals by mid-afternoon Wednesday ahead of the cold front.
Wind gusts generally less than 20 mph except in the northeast third of the forecast area the higher elevations could gust to 25 to 30 mph in northeast Tennessee and southwest Virginia. High pressure builds in from the west today and tonight for tranquil weather overall. Discussion: Tranquil weather is on tap for the forecast area today and tonight as high pressure builds into the region. Temperatures will be a little warmer than yesterday, and mixing is once again expected to be fairly deep. Yesterday afternoon saw some RH values in the teens, and while the HRRR is often times too aggressive with how much it mixes out the low levels, it may be more correct than other guidance. That's especially true given we'll be warmer than yesterday.
140 PM EDT Wed Apr 16 2025 Cool high pressure will build overhead tonight.
(Tonight through Thursday night) For the short term period, ridging will remain in place overhead through much of the period and begin to slowly slide eastward Thursday evening. At the same time a mid/upper level trough will dig into the Great Basin allowing low pressure to develop at the surface across the High Plains. While the high pressure in place will maintain warm and dry conditons over us, the increased surface pressure gradient will lead to breezy conditions tonight into Thursday.
928 AM MDT Wed Apr 16 2025 KEY MESSAGES: - Cold front to bring accumulating snow along the Continental Divide, especially over mountain passes above 4000 feet, Wednesday into Thursday. - Gusty north to north east winds later today into Thursday bring raw backcountry conditions and choppy water on area lakes A backdoor Canadian cold front will cross the Continental Divide in northwest Montana later this morning, spreading south and west throughout the day. While the heaviest accumulations are expected in the higher terrain along the Divide, localized slushy snow may develop in valley areas beneath the most intense bands.
A thermal trough will bring gusty northerly winds and steep to very steep seas to the coastal waters, with the strongest winds and steepest seas south of Cape Blanco through late tonight.
1205 PM CDT Wed Apr 16 2025 (Today through Thursday Night) Warm air advection returns to the area, and thus temperatures are expected to be a few degrees warmer than yesterday's highs. Inland areas will top out in the low to mid 80s while the coast will experience highs in the mid to upper 70s. Thursday will begin a transition in the synoptic pattern as an upper-level ridge axis moves overhead. Cloud cover Thursday night will act as a blanket over SE Texas, locking in warmer temperatures during the overnight hours.
415 PM EDT Wed Apr 16 2025 Cool high pressure will build overhead tonight.
Thursday will be quite a bit warmer, with low 70s across far northern GA and upper 70s to low 80s across the rest of central GA.
1244 PM CDT Wed Apr 16 2025 Updated aviation portion for 18Z TAF issuance - Elevated fire weather conditions will be possible this afternoon due to relative humidity readings in the low to mid 20s, locally lower in sandy soil areas.
(Tonight through Thursday night) Upper air analysis this morning showed a ridge over the south- central part of the country with anticyclonic flow over Texas. High pressure in the low levels has the flow from the southeast across our CWA. The upper ridge will progress toward the east through this period. The low level pattern will remain the same with southerly to southeasterly winds continuing. Lows each morning will increase a few degrees and highs Thursday will be a few degrees warmer than today.
215 PM EDT Wed Apr 16 2025 Cool high pressure will build overhead tonight.
205 PM EDT Wed Apr 16 2025 Low pressure will lift north of the area today and tonight.
224 PM EDT Wed Apr 16 2025 Dry high pressure lingers over the area through the weekend and temperatures warm a little each day.
129 PM EDT Wed Apr 16 2025 Cool and dry high pressure will build in from the west through tonight before shifting offshore on Thursday.
(Rest of today through Thursday) GFS/Euro and ensemble solutions all show good agreement in having a dominant high pressure system descending upon the state in the wake of a frontal passage today. Latest GEFS MSLP analyses show a sprawling 1026mb high pressure cell establishing over the region in the wake of the FROPA, with strong subsidence keeping rain out of the short term forecast. Expect afternoon highs in the lower 80s near the coasts, and in the mid- upper 80s over interior areas of South Florida.
A cold front has been pushing through the state today which is pretty evident on satellite as a line of clouds push south with clear skies behind it.
159 PM EDT Wed Apr 16 2025 Stacked low pressure over Quebec will SLOWLY lose its grip on our region during the course of tonight. High pressure over the Upper Great Lakes will move over our region on Thursday.
Tonight, temperatures will be about 10 degrees warmer than last night, falling into the 50s F as winds turn southerly around the western flank of the high pressure center responsible for the fair weather.
1249 PM MDT Wed Apr 16 2025 KEY MESSAGES: - Cold front to bring accumulating snow along the Continental Divide, especially over mountain passes above 4000 feet, this evening into Thursday. Showers continue to develop both ahead of and along the advancing cold front, with some producing lightning. While the highest snow totals will favor the elevated terrain along the Divide, brief slushy accumulations are possible in some valley locations under stronger snow bands.
Northwesterly winds will increase Thursday morning through Thursday afternoon following the cold frontal passage.
* A cold front brings gusty winds and cooler weather Thursday with a few rain and snow showers mainly near the Sierra.
1204 PM CDT Wed Apr 16 2025 (Today through Thursday) The subtropical ridge gradually works east across Deep South Texas and Northern Mexico through Thursday, maintaining dry air aloft. At the surface, low pressure settles into the Plains into Thursday as high pressure holds across the eastern Gulf, enhancing the pressure gradient along the lower Texas coast. A brief and focused Wind Advisory may be needed in the lower to mid RGV or just across Cameron Co.
315 PM EDT Wed Apr 16 2025 Stacked low pressure over Quebec will SLOWLY lose its grip on our region during the course of tonight. High pressure over the Upper Great Lakes will move over our region on Thursday.
1156 AM EDT Wed Apr 16 2025 Low pressure will lift north of the area today and tonight.
314 PM EDT Wed Apr 16 2025 Winds diminish this evening as High pressure builds over the area. With high pressure over the area, expecting light winds and mostly sunny skies Thursday.