Aikyam-Lab/Synoptic-Bench huggingface dataset:
The upper trough of low pressure will be swinging across the ArkLaTex providing a gradual clearing from the Northwest to Southeast during the evening with sites becoming VFR with some middle clouds around 13 KFT and higher cirrus near 25 KFT which will decrease after 08/06Z-08/08Z.
Chance of lingering showers will continue tonight as a cold front to the nw approaches and pushes across the area late tonight. Low clouds will persist on Thursday behind shallow front along with north winds resulting in cooler temperatures. Expect low stratus and fog behind cold frontal passage late tonight to spread across the area.
Most of the hi-res models show the low level cloud deck diminishing as drier air moves into the area from the north over the Brush Country. With less cloud cover, temperatures could fall into the lower to mid 30s over the northern Brush Country. Over the Brush Country, it appears drier air in the lower levels will erode the stratus with ceilings expected to lift to VFR levels around 10Z and continue through the day Thursday.
305 PM MST Wed Feb 7 2018 Light snow will develop tonight along a cold front positioned through North-central MT. A mix of rain, snow, sleet, or freezing rain are all possible at lower elevations tonight in a broad area around Great Falls.
938 PM EST Wed Feb 7 2018 High pressure only sticks around for a brief stay Thursday.
538 PM EST Wed Feb 7 2018 Isolated to scattered light snow showers are expected through part of Thursday with an upper level trough.
958 PM EST Wed Feb 7 2018 A cold front will move east across the region this evening and offshore tonight.
947 PM CST Wed Feb 7 2018 Areas of light rain that were slow to diminish across our srn areas this evening have finally dissipated/moved swd in the wake of a slow-moving cold front. High pressure will continue to build into our region overnight, gradually clearing the skies by sunrise. The upper trough of low pressure will be swinging across the ArkLaTex providing a gradual clearing from the Northwest to Southeast during the evening with sites becoming VFR with some middle clouds around 13 KFT and higher cirrus near 25 KFT which will decrease after 08/06Z-08/08Z.
Temperatures are in the lower 70s and dewpoints are in the upper 60s. An Atlantic ridge of high pressure over North Florida will retreat eastward tonight. A trough of low pressure will move southward down the Florida peninsula Thursday.
/22/ This Evening through Thursday: In the wake of this morning's cold front passage, temperatures will continue to drop through this evening and into the night. Cooler and drier air will filter into the region, which should allow for temperatures to drop into the low to mid-30's as clouds clear out early in the morning. High temperatures are expected to range from the low 50's in the Delta to the low 60's through the Pine Belt.
539 PM EST Wed Feb 7 2018 The cold front will move through the area this evening with high pressure ridging into the area from the north Thursday.
540 PM MST Wed Feb 7 2018 Light snow will develop tonight along a cold front positioned through North-central MT. A mix of rain, snow, sleet, or freezing rain are all possible at lower elevations tonight in a broad area around Great Falls.
642 AM EST Thu Dec 28 2017 Arctic high pressure builds across the eastern Great Lakes and New England today. Weak low pressure develops off the Southeast coast Thursday night through early Friday, before arctic high pressure returns for this weekend into the new year. The high slides east today, with continued CAA across the Mid Atlc. Decreasing clouds behind the departing wave on Friday, with highs ranging from the mid 30s N to the low 40s SE.
416 AM CST Thu Dec 28 2017 Light snow continues to move across the northeastern CWA and should be out of the area within the next few hours as the low pressure system pushes further east. For the rest of the period today until 6 AM CST Friday, winds will become breezy late this morning/early afternoon as the low continues to slide off to the east and dry air subsidence descends into the area on the back side. Another weak upper level low will develop late Thursday in western South Dakota. Warm air advection ahead of the low along with saturation through the DGZ will lead to another batch of snow entering the western CWA during the period.
Unusually strong high pressure for this time of year is centered off the southern California coast this morning. This area of high pressure will slowly shift toward Arizona through the weekend, bringing a continuation of the unseasonably warm and dry weather.
Little change in weather is expected over the area through the short term, as upper level ridging brings dry weather with mild high temperatures.
The combination of the coastal trough just offshore and weak cold air advection will continue to support cloudy skies, cool temperatures and periods of light rain and drizzle through the period. Also, the coastal trough may deepen and shift slightly west, supporting a chance of light rain and drizzle a bit farther west, across the upper Valley, tonight and Friday. High temperatures today will struggle to reach the upper 40s across the ranchlands and lower 50s in the lower valley as weak cold air advection continues under cloudy skies. Low temperatures tonight will fall into the 40s across much of the area except for the low to mid 50s near the coast. Slightly warmer temperatures are expected on Friday with highs mainly in the 50s.
1020 AM EST Thu Dec 28 2017 Arctic high pressure will slowly build toward the region through late week. An area of moisture rotating around low pressure centered near Labrador will move south across the region today. Partly cloudy/mostly clear skies are expected across the forecast area tonight with high pressure building toward the region.
531 AM EST Thu Dec 28 2017 High pressure will maintain mainly dry and cold weather today. Otherwise, expect dry and very cold conditions with high pressure in control.
Freezing fog with vis down to 1/4SM will persist at HOB and occasionally at FST and MAF during this time. Light ice accumulations are possible, particularly on elevated surfaces and a Freezing Fog Advisory is in effect through the morning hours. /issued 345 AM CST Thu Dec 28 2017/ WV imagery shows the west coast ridge has amplified slightly over the last 24 hours, turning flow aloft over West Texas and Southeast New Mexico from zonal to NW. At the sfc, while weak return flow has resumed, stratus/fog remain socked up against the higher terrain. After yesterday, during which the lwr terrain struggled to climb above freezing, areas this morning w/heavier fog could see light rime accumulations on elevated surfaces, and possible roads/sidewalks.
Lake effect snow showers over NW PA should generally decrease in overall coverage through today as 1040mb high pressure slides east from the OH Valley.
926 AM EST Thu Dec 28 2017 High pressure over Ohio will move east today as low pressure moves from the Dakotas to Minnesota.
Temperatures are in the lower to mid 70s. In the low levels of the atmosphere, an area of high pressure over the Northeastern United States will bridge over a stationary front draped across the Florida peninsula this afternoon. In the mid levels of the atmosphere, an anticyclone will be centered over the south central Gulf of Mexico today. Anticyclonic flow in the low to mid levels of the atmosphere will be responsible for no more than slight chance POPs today.
640 AM EST Thu Dec 28 2017 High pressure over Ohio will move east today as low pressure moves from the Dakotas to Minnesota.
Cold air advection continues at the surface, and a glance at 3AM surface obs indicates the freezing line as far south as a line from Meridian to Jackson to Natchez. Any light precipitation is expected to remain south of the sub-freezing air, so only rain is anticipated before daytime heating kicks in today.
910 AM EST Thu Dec 28 2017 Arctic high pressure crosses today.
751 AM EST Thu Dec 28 2017 Arctic high pressure will slowly build toward the region through late week. An area of moisture rotating around low pressure centered near Labrador will move south across the region today. Partly cloudy/mostly clear skies are expected across the forecast area tonight with high pressure building toward the region.
650 AM EST Thu Dec 28 2017 Strong high pressure to the north will direct cold air into the forecast area through tonight. Low pressure will move northeastward along a front off the Southeast Coast tonight.
/issued 420 AM CST Thu Dec 28 2017/ (Today and tonight) A Freezing Fog Advisory remains in effect until 10 AM for areas west of a Fort Mckavett to Hamlin line. Ongoing below freezing temperatures and fairly dense fog will make light ice accumulations possible, especially on bridges and overpasses. Some uncertainty remains in the forecast as to the timing, which will affect the high temperatures for this afternoon.
719 AM EST Thu Dec 28 2017 High pressure will maintain mainly dry and cold weather today. Otherwise, expect dry and very cold conditions with high pressure in control.
601 AM CST Thu Dec 28 2017 Strong 1041 mb arctic high pressure was over eastern WI and into central IL early this morning and bringing bitter cold temps to the area. Another strong 1045 mb arctic high pressure is moving into the northern plains and upper Midwest from Alberta Canada during this New Years weekend, and ushering in bitter cold air again.
1029 AM EST Thu Dec 28 2017 Hydro An area of low pressure will track through the region today and tonight.
Even warmer temperatures are expected on Friday, with all locations warming well into the 40s by afternoon.
243 AM PST Thu Dec 28 2017 High pressure aloft along the West Coast will bring a warming trend through Friday.
604 AM EST Thu Dec 28 2017 Arctic high pressure crosses today.
For this morning, an area across southwest Oklahoma and adjacent parts of north Texas will have to be monitored for the development of light freezing drizzle. Tomorrow might be a little warmer with highs in the 40Fs to perhaps 50Fs in western north Texas. There will also be another low chance of freezing drizzle in morning as well.
829 AM EST Thu Dec 28 2017 A weak area of low pressure in the Gulf will move east today, bringing an increase in the drizzle and showers across the region. Highs will be in the 40s across southeast Georgia, the low to mid 50s along the I-10 corridor and the low to mid 60s towards north central Florida.
702 AM EST Thu Dec 28 2017 Center of arctic high pressure is directly over southeastern Michigan this morning, leading to extreme cold conditions. The high pressure drifting across the Great Lakes is leading to a weak pressure gradient, resulting in calm or very weak winds overnight. As the high pressure drifts just east of the area, southerly winds will take over by the afternoon. This will allow some slight warm air advection of a few degrees at 850 mb into Michigan resulting in a slight warm up to near or reaching the low teens.
541 AM CST Thu Dec 28 2017 Weak isentropic upglide and best moisture axis has shifted south of the Four-State Region early this morning, due to the yesterday's secondary cold frontal push.
410 AM CST Thu Dec 28 2017 Weak isentropic upglide and best moisture axis has shifted south of the Four-State Region early this morning, due to the yesterday's secondary cold frontal push.
946 AM EST Thu Dec 28 2017 Strong high pressure to the north will direct cold air into the forecast area through tonight. Low pressure will move northeastward along a front off the Southeast Coast tonight.
Cold/dry high pressure will then shun the snow southward into Friday. Cold start to the day with early morning temperatures in the lower teens below zero in northern areas of the CWA. Light snow, associated with a surface cold front, continues to push east out of the CWA this morning. The surface cold front exits as Arctic high pressure slides southeastward into the region through the day.
233 AM PST Thu Dec 28 2017 A persistent ridge of high pressure along the West Coast will provide quiet and dry weather through New Years Day, with above average daytime temperatures and relatively light valley winds. A ridge of high pressure will remain near the CA coast with periods of mid and high clouds.
314 AM MST Thu Dec 28 2017 Winds will be relentless across the southeast Wyoming wind corridor over these next few days, as fast northwest flow combines with tight pressure gradients in the low-levels.
Current temperature readings range from the mid 30s to mid 40s at area airports, generally warmer than yesterday at this time, probably because of the high clouds.
A weak short wave trough over northwest Mexico will move across the Texas Big Bend tonight and be near the Hill Country Friday morning. The short wave trough will move to the east of the area by Friday afternoon with better rain chances moving back over the coastal waters. Expect the gradient will be strong enough near the coastal trough to keep wind speeds over the Gulf waters at SCEC levels today through Friday. Temperatures will warm up a little bit on Friday into the lower to mid 50s.
For today, the higher elevations will remain windy through the day. Still cooler further north and east but those areas will warm up as well. A cold front will back into eastern Colorado late Friday afternoon.
633 AM EST Thu Dec 28 2017 High pressure over Ohio will move east today as low pressure moves from the Dakotas to Minnesota.
539 AM CST Thu Dec 28 2017 Light snow continues to move across the northeastern CWA and should be out of the area within the next few hours as the low pressure system pushes further east. For the rest of the period today until 6 AM CST Friday, winds will become breezy late this morning/early afternoon as the low continues to slide off to the east and dry air subsidence descends into the area on the back side. Another weak upper level low will develop late Thursday in western South Dakota. Warm air advection ahead of the low along with saturation through the DGZ will lead to another batch of snow entering the western CWA during the period.
420 AM CST Thu Dec 28 2017 (Today and tonight) A Freezing Fog Advisory remains in effect until 10 AM for areas west of a Fort Mckavett to Hamlin line. Ongoing below freezing temperatures and fairly dense fog will make light ice accumulations possible, especially on bridges and overpasses. Some uncertainty remains in the forecast as to the timing, which will affect the high temperatures for this afternoon.
1012 AM EST Thu Dec 28 2017 Update An area of low pressure will track through the region today and tonight.
535 AM EST Thu Dec 28 2017 Arctic high pressure builds across the eastern Great Lakes and New England today. Weak low pressure develops off the Southeast coast Thursday night through early Friday, before arctic high pressure returns for this weekend into the new year. The high slides east today, with continued CAA across the Mid Atlc. Decreasing clouds behind the departing wave on Friday, with highs ranging from the mid 30s N to the low 40s SE.
Relatively quiet tonight as weak high pressures squeezes down in between the departing system and the one coming in for Friday.
518 AM EST Thu Dec 28 2017 Arctic high pressure will slowly build toward the region through late week. An area of moisture rotating around low pressure centered near Labrador will move south across the region today. Partly cloudy/mostly clear skies are expected across the forecast area tonight with high pressure building toward the region.
A weak area of high pressure has built in over southern Oregon and northern California this evening as the cloud cover continues to diminish. Current models project that the highest precipitation amounts will be located north of Eugene before moving southward into our area on Friday. The highest amoutns of precipitation--up to an inch and a quarter in 6 hours--will be possible across the coast and the coastal range from Brookings to Cape Blanco on Friday afternoon. This will lead to rain everywhere except for the highest peaks of the Cascades.
Current models project that the highest precipitation amounts will be located north of Eugene before moving southward into our area on Friday. The highest amoutns of precipitation--up to an inch and a quarter in 6 hours--will be possible across the coast and the coastal range from Brookings to Cape Blanco on Friday afternoon. This will lead to rain everywhere except for the highest peaks of the Cascades.
650 AM EST Thu Dec 28 2017 Aviation An area of low pressure will track through the region today and tonight.
702 AM EST Thu Dec 28 2017 Center of arctic high pressure is directly over southeastern Michigan this morning, leading to extreme cold conditions. The high pressure drifting across the Great Lakes is leading to a weak pressure gradient, resulting in calm or very weak winds overnight. As the high pressure drifts just east of the area, southerly winds will take over by the afternoon. This will allow some slight warm air advection of a few degrees at 850 mb into Michigan resulting in a slight warm up to near or reaching the low teens. Low temperatures tonight are forecast to reach above freezing into the single digits for much of the area.
Clear skies across the forecast area as ridging from the eastern Pacific is building into the area. As the ridging gets stronger over the next couple of days, temperatures will nudge up another couple of degrees which will put us near record high values for much of the area.
A weak inverted sfc trof off the esat FL coast is producing a N/NE breeze acrs central FL that may nudge the front slightly south thru sunset, but no further than Sebastian Inlet/Lake-K region as the regional H100- H70 flow is generally parallel to the its orientation. Variable winds acrs the lcl Atlc as an inverted trof interacts with a strong hi pres ridge to the north. The trof is keeping the pgrad disorganized over the Treasure Coast waters, resulting in a light to gentle E/SE breeze that backs to the N/NE near the coast.
913 AM EST Thu Dec 28 2017 Arctic high pressure will slowly build toward the region through late week. An area of moisture rotating around low pressure centered near Labrador will move south across the region today. Partly cloudy/mostly clear skies are expected across the forecast area tonight with high pressure building toward the region.
/issued 327 PM CST Wed Feb 21 2018/ Skies remain cloudy across the forecast area this afternoon with temperatures ranging from around 40 degrees to the lower 60s. The cold front has cleared all but the extreme southeast corner of the forecast area. The cold front should stall out tonight so rain should continue across the forecast area.
Freezing rain and sleet will be possible parts of the area this evening but areas of FZDZ is expected to be the primary precip overnight into the morning. Another round of freezing rain/rain is expected Thursday.
This will deepen the upper trof into the Great Basin in the short term.
816 PM EST Wed Feb 21 2018 A strong U/L ridge remains anchored over the western Atlantic and Florida peninsula.
It will stay warmer along our western foothills per a little wind. This will deepen the upper trof into the Great Basin in the short term.
1013 PM EST Wed Feb 21 2018 A cold front will push offshore tonight. High pressure will build in from the west on Thursday and crest over the area Thursday night.
A cold front currently extending from Falcon Lake to east of BKS line will continue to move south through this evening. In the wake of the cold front, low ceilings between 700 to 1200 feet are expected overnight into most of Thursday with some light rain/drizzle.
There is low confidence if the southern Bitterroot Valley including Hamilton will see anything out of this low pressure system which will dive south into southern Idaho Thursday evening. Because this system becomes cutoff for a period Thursday afternoon centered over east-central Oregon into Idaho, there is a chance that snow intensities could become moderate affecting Elk City, Red River Hot Springs and even the lower elevations like the Salmon River Valley.
701 PM EST Wed Feb 21 2018 Late this afternoon a cold front was positioned just northwest of the VA border and was about to stall.
403 PM MST Wed Feb 21 2018 An upper level trof will move into UT and AZ tonight, and ahead of this system snow will increase along the Continental Divide. Temps on Thu will still be below average, with mostly in the 30s over El Paso county and in the 40s over the rest of the plains, and the high valleys should see mainly 30s for highs.
855 PM CST Wed Feb 21 2018 A cold front was very close to the coast and should continue to trek into the coastal waters. A weak 850 low was over east Texas with a weak trough axis extending to the S-SW of the 850 low. Showers not quite as numerous as earlier in the evening but lift from the 850 trough and the copious moisture should keep showers/iso thunderstorms going through the night. The cold front is moving through LBX right now with associated showers and handful of thunderstorms pushing across the southern half of the taf sites.
1035 PM EST Wed Feb 21 2018 Water vapor loops highlight a high-amplitude mid-upper level ridge reaching from Central America to Nova Scotia. A broad expanse of dry air associated with the mean layer ridge covers the Western Caribbean and Florida. The afternoon convergence zone in the lee of Andros Island produced a well formed line of scattered showers late this afternoon which impacted the Lower Keys with several rounds of light to moderate rain showers this evening.
/issued 335 PM EST Wed Feb 21 2018/ The large upper level ridge centered off to our northeast will continue to dominate the weather across South Florida. This ridge is continuing to strengthen which will lead to similar weather conditions for tonight into Thursday. With the area of high pressure strengthening, the pressure gradient will continue to increase as well which will lead to breezy easterly flow for Thursday. A weak disturbance will rotate around this area of high pressure, which will provide an increase in low level moisture later tonight into Thursday. The eastern side will remain closer to normal with high temperatures reaching the lower to mid 80s on Thursday.
The stalled front will move back to the northwest Thursday as surface and mid level ridging strengthen back over the area from the east. Otherwise a warmer than normal and moister than normal airmass will remain much of east Mississippi spreading west again Thursday.
The cold front is now through all our terminals and continues to move towards the coast as of 6PM CST. Cold front continues to move southeast at 10 to 15 mph toward the coast, along a line from Magnolia Beach to Sinton to Alice to Hebbronville. Will continue to use a blend of NAM/ARW/SREF for the movement of the cold front through the forecast period. But another short wave trough will be moving northeast toward the region Thursday night with isentropic lift strengthening especially over the Brush Country.
413 PM MST Wed Feb 21 2018 Not as cold tonight as the cold arctic high over the plains moves east and return flow allows for warmer air to spread over the area. This should bring some snow showers to the higher mtns overnight but only light accumulations expected. Flurries and snow showers should spread into mainly the southeast part of the Panhandle Thursday as the impulse ejects into the high plains. Cold again Thursday night as another push of colder air settles down the high plains but not as cold as the last surge.
Freezing level near 14,000 feet, with -20C level at 24,000 feet. Frontal zone then retreats north as warm front and softens the air mass compression over the area for perhaps only isolated showers on weaker convergent streaks Thursday.
Strong high pressure centered near Bermuda with a ridge axis extending to south Georgia is providing a moderate to fresh east/southeast breeze in the low levels. The low level flow overnight looks too strong for any significant fog. Stout Atlantic high pressure ridge is producing a long fetch of moderate easterly flow.