Aikyam-Lab/Synoptic-Bench huggingface dataset:
932 AM CST Mon Jan 29 2018 The lower stratus in place across the area is running about 2000ft thick and is solidly all within the dendrite zone. Cyclonic flow aloft with a mid level trough trucking through is aiding all this as well. Also some flurries getting shaken out of the extensive stratus shield over central/southern WI, partially due to weak inverted surface trof over the area. Clouds may hang on well into the afternoon due to thermal trof over the area but increasing subsidence and backing low level winds should result in decreasing clouds most areas.
breezy northerly winds behind a cold front moving through. /Issued 324 AM CST Mon Jan 29 2018/ Cold front currently moving into far southeast Oklahoma/west-central Arkansas early this morning. Brisk north winds behind the front have dropped wind chill indices into the lower to mid teens across much of northeast Oklahoma.
1019 AM EST Mon Jan 29 2018 Low pressure near the coast will move northeastward and farther away from the forecast area today.
Winds increase today with strong and potentially damaging winds likely to develop by late this afternoon along the Rocky Mountain Front, then spreading east across the north central Montana plains tonight through Tuesday morning with the passage of a cold front. Cooler and continued unsettled conditions are anticipated for the second half of this week into the weekend.
334 AM PST Mon Jan 29 2018 High pressure with offshore flow will continue across the region for the next seven days with above normal temperatures and dry conditions. Very stable pattern across the area, as a low pressure center in the Gulf of Alaska starts to fill and will move inland into western Canada tomorrow.
This drop is indicative of high pressure building into the area. In addition, another cold front extended from Ohio Valley to Arkansas to West Texas. Upper air analysis showed a trough axis from the Great Lakes region to north central Gulf with an embedded disturbance over Missouri. The main upper level trough axis will continue to push east and northwest aloft and surface will drive the remaining moisture well south to southern and southeast gulf today and tonight.
1058 AM EST Mon Jan 29 2018 Cold front moving through central Florida bringing an end to any light showers and shifting winds to northwesterly. Widespread MVFR/local IFR cigs will impact the terminals through the day as a cold front moves southeastward across the region. Areas of sea fog will continue to shift southeast down along the southwest coast this morning out ahead of the cold front and should dissipate by early afternoon as some drier air begins to move in behind the boundary.
29/12Z TAF CYCLE Cold front over NW AR this mrng wl cont to work SWD and is expected to shift S of the area this aftn. Today Through Tuesday Night Cold front was located acrs NW AR early this mrng. Elsewhere, highs wl be in the 40s and 50s, about 5 to 10 degree cooler than on Sun. The high wl shift E of AR on Tue, with S/SE wind flow returning.
206 AM PST Mon Jan 29 2018 Stratus and freezing fog have formed again early this morning in Sierra valleys. Otherwise, the upper level ridge remains firmly in place bringing warmer than average temperatures for the near future. Aside from adding another round of stratus and freezing fog over Lake Tahoe for this morning, forecast changes were minimal. Expect areas of low visibility and some slick spots, especially over bridges and overpasses, if driving in the Sierra this morning. These temperatures are due to the highly amplified ridge that is building over the west coast and increased mixing from a dry front that will pass through the region on Tuesday. Ridges will gust 45 to 60 mph Tuesday.
An upper level trough and reinforcing cold front will swing through the lower Ohio Valley today. Coverage of this precipitation will be isolated to scattered with the highest coverage expected across the Bluegrass reiogn this afternoon and evening.
530 AM CST Mon Jan 29 2018 Energy within the base of a mid level trof that extended from Great Lakes to the Mississippi Valley region, will move east today. Quiet weather tonight through Tuesday night as high pressure moves across the area. It will be cooler as well.
401 AM PST Mon Jan 29 2018 High pressure aloft and moderate to locally strong and gusty Santa Ana winds will bring well above average high temperatures today.
Minor disturbances will pass over a building ridge for the rest of the period with some light showers possible in the north.
Weak ridge axis passes over the area today, bringing another day of well-above-normal temps to most locations. We presently have dense fog over much of the lower Treasure Valley and Ada County, and also in McCall. Mid and high clouds are blocking satellite views of most of the area, so we cannot be certain of the total extent of the fog. Tuesday, the trough arrives, and with it a weak cold front.
944 AM EST Mon Jan 29 2018 A weak low pressure area and an associated cold front will continue to move across the region today bringing light snow and much colder air.
500 mb heights will fall through the day as an upper trough shifts over the Pacific Northwest. This trough will drag a weak cold front over northwest California and bring a quick round of very light rain to mostly Del Norte and Humboldt counties for early Tuesday morning. Low clouds at KUKI may be a bit slow to clear out at KUKI due to the higher cloudiness. Northerlies will increase across the waters by Tuesday night as high pressure builds NW of the area and a thermal trough sharpens over land.
321 AM MST Mon Jan 29 2018 Ridge of high pressure aloft over the Great Basin will translate eastward across Colorado today through tonight. Main story today will be less wind in the mountains and plains along with warmer temperatures. As the ridge axis shifts east this evening, there will be a stronger westerly flow developing later tonight. Strong winds along and east of the Continental Divide down over the higher foothills will continue Tuesday morning, increasing in the afternoon. Still, bumped up the forecast windspeeds in the high country as well as in the afternoon over the plains with mixing, as the forecast was too light.
The Central Coast has fairly calm winds this morning and lows there will be much cooler but the offshore flow will allow for a very nice warm up and max temps will soar into the mid 80s there as well. Pretty dull weather for Tue and Wed the ridge will weaken through the period.
Watch out for icy patches on previously wet roadways since temperatures are at or just below freezing this morning. Mild temperatures with highs in the 40s and in some places 50s, can be expected today ahead of Tuesday morning's cold front. There is the potential for strong gusty winds with the cold front passage Tuesday morning at all elevations in western Montana.
This allows current troughing to gradually push off to the east as sharp mid level ridging builds into the Upper Mississippi Valley region by Tuesday morning.
955 AM CST Mon Jan 29 2018 Mostly clear skies prevail across the TN Valley this morning, as high pressure builds southward and into the area. A reinforcing cold front is slowly moving through the region and will drop south of the area by this afternoon. Temperatures as of 9 am had already risen into the lower to mid 40s and with ample sunshine, we should see these temps rise another 5 to 10 degrees with daytime highs maxing out in the mid 50s. Daytime highs will be around 10 degrees below normal in the lower 40s.
Also some flurries getting shaken out of the extensive stratus shield over central/southern WI, partially due to weak inverted surface trof over the area. Clouds may hang on well into the afternoon due to thermal trof over the area but increasing subsidence and backing low level winds should result in decreasing clouds most areas.
708 AM EST Mon Jan 29 2018 A weak low pressure area and an associated cold front will continue to move across the region today bringing light snow and much colder air.
506 AM EST Mon Jan 29 2018 An upper-level composite analysis this morning shows a large-scale trough migrating eastward across the eastern United States. An associated MSL pressure trough and cold front currently extend from near the Carolina coast SW to the Bay of Campeche.
853 AM EST Mon Jan 29 2018 Cooler temperatures are expected today. An approaching upper trough will bring cold temperatures, as well as snow tonight and into Tuesday, with mainly a light accumulation.
The cold front is now located in Southern GA/Northern FL, but the cloud shield extends back into NE AL, where SCT to OVC cloud cover still lingers. Daytime highs will be around 10 degrees below normal in the lower 40s.
Rain has moved well east of the area as a cold front has moved through the entire area this morning. Highs will warm into the low to mid 60s. A reinforcing cold front moves through this evening bringing a colder and drier airmass into the area. Lows tonight fall into the low 30s inland to mid 30s along the coast.
Expect VFR conditions for the next 24 hours as high pressure builds across the region behind the dry cold front. /17/ Today through Tonight: Latest rap and satellite imagery showed a mid to upper level trough over the Mississippi Valley region. With a tight pressure gradient and high pressure building in expect breezy conditions for today with gusty winds of up to 25 mph in the delta region and 15 to 20 mph elsewhere as a dry cold front tracks across the region for today. Winds will taper off as the pressure gradient relaxes from the northwest overnight as the upper trough tracks to the east. Highs today will be from the lower 50s north to the lower 60s south. It will be cooler tonight with a freeze with lows from the middle 20s to the lower 30s.
839 AM EST Mon Jan 29 2018 Low pressure moving up the SE US coast as trailing cold front has cleared all of the land areas and pushing through the offshore coastal waters of NE FL at this time. Some partial clearing during the mid-late afternoon hours but more significant clearing taking place this evening with mainly clear skies expected for tonight along with expected cooler/drier airmass to drop temps into the upper 30s/lower 40s and combined with NW winds close to 10 mph through the night should produce wind chills down into the lower to middle 30s by early Tuesday morning.
1015 AM EST Mon Jan 29 2018 Cold front over the I-4 Corridor will press thru central FL thru the aftn and should reach the FL Straits/Bahama Bank by sunset. Mcldy skies will cont thru sunset as the frontal trof works its way acrs the state, but precip with the WX event is done, for the most part. Poor/hazardous boating conds this aftn as a cold front pushes thru central FL.
The lowest winds have slackened as well, and KBYX Doppler radar VWP shows that they have even come down even more from when the balloon was released. However, needed to insert at least a slight chance of thunder on a recently updated zone forecast due to the instability and the few thunderstorms just south of the Lower Keys over the past hour or so. Enjoy the more agreeable recreational boating conditions while you can, namely for today only as a cold front will push through tonight with strengthening northerly winds setting up.
Late in the day, a cold front will push into the area, shifting winds to NW with some gusts above 20 kts possible.
Dry and Slightly Cooler. A weak cold front will push slowly south, across West Central Texas, today and bring winds from the north, along with slightly cooler temperatures. This front will not have the thermal energy we've seen with previous fronts; however, it will bring some cooler air into West Central Texas, from the north.
Overall a temperature forecast as mainly clear skies will prevail through the period as an upper ridge comes in and then weakens on Tuesday. Cool to mild on Tuesday with the high moving east and brining an onshore wind late. Highs 2 to 5 degrees cooler than Monday, with the cooler temperatures near the coast with the winds moving over the cool shelf waters and keeping temperatures down. Could have borderline SCA again tonight over the offshore waters but since it is borderline will let the day shift take a look at it and decide (especially since my winds are on the higher side compared with neighbors).
Farther N across NE LA/SW AR, VFR conditions will continue beneath extensive cu cigs, with steering winds expected to become NNW by or shortly 12Z Monday, as sfc ridging begins to build S into the area. Some of the higher resolution models are also continuing to hint at some light rain across our southern areas later this evening, but given the shallow nature of this stratus deck, doubt we will see anything more than a few sprinkles at best. Therefore, not expecting any freezing temperatures tonight, but it will still be on the chilly side for this time of year. Dry and warmer conditions will prevail across the region tomorrow, with temperatures warming between 8 and 12 degrees across the region tomorrow.
The 19z MSAS surface analysis indicated a ridge of high pressure that extended from Ontario southeast into the eastern Great Lakes. An area of low pressure was located over north-central Nebraska. The weak area of low pressure is forecast to move east into the Midwest tonight and bring the swath of light snow mainly to southern WI. Min temperatures will be noticeably warmer than the past couple of nights thanks to the cloud cover. Look for readings to range from the lower to middle teens north, to the lower 20s south. Of more certainty will be a good deal of clouds over the region and slightly warmer temperatures (mainly due to the milder start to the day).
Temperatures Monday will be slightly warmer as the April sun angle is strong for this time of year.
Latest guidance indicates that a few sites may get down to around freezing by morning, but certainly much warmer than temps observed over the past couple mornings when freeze warnings were in effect. A weak trough passing through has brought several waves of low to mid level cloud cover. becoming light northerly Monday morning as high pressure works in from the north. /Issued 327 PM CDT Sun Apr 8 2018/ Mid level trough axis sweeping across the area this afternoon, resulting in some light radar returns that are not reaching the ground. Skies should clear some as the trough continues to pull away from the region tonight.
532 PM MDT Sun Apr 8 2018 Current surface analysis shows low pressure over northeast NE, with frontal boundary sliding south of the forecast area. Ridge is in place along the west coast. Snow accumulations up to 2 or 3 inches are possible over the higher elevations of the northern Black Hills and the Bear Lodge Mts, with little or no accumulation expected elsewhere.
Temps will be about 10 degrees warmer than last night and the winds will be less than 10 mph.
An area of low pressure moving through the Central Plains, and weakening as it moves east, will just skirt the Brainerd Lakes region with light snow late this afternoon through this evening. Otherwise, the Northland will just have cloud cover associated with the low. Weak high pressure will move in overnight, and there should be some clearing from the north late tonight. An upper trough will pass over the Northland Monday, which will help develop some cumulus and light snow/rain showers. A weak trough will likely set up along the North Shore, and convergence along the inland higher terrain could result in some light precipitation because of the moisture from Lake Superior.
MVFR/IFR ceilings will likely persist Monday until the passage of a secondary weak cold front.
However, very low sfc dewpoints and deep dry air during the morning/early afternoon will cause any light precip that falls, to quickly cool the near sfc layer enough to support some wet snow flakes, especially at elevations AOA 1500 MSL as some weak to moderate low to mid level lift occurs beneath the thermally indirect, left exit region of a 140KT westerly upper level jet max, and INVOF the aforementioned inverted llvl trough across the SW part of the state. Using a snow/water ratio of 6-10:1 yields a little over one inch across the higher terrain near and just to the north and west of the I-99/I-80 corridors, with less than 0.
Soundings still depict the loss of cloud ice after sunset, so northeast MO should see a transition from snow to freezing drizzle tonight.
Still getting a few flurries and some light mist across the southern CWA, which seems well covered by the low POPs for light snow and patchy fog mention we have going. Little accumulation expected and main impact will still be wet roads from daytime snow freezing tonight, and causing some slick road surfaces. High pressure should settle over the FA on Monday with much lighter winds. On Monday night, high pressure builds southward into the Central Plains yielding a quiet night.
The low levels however are extremely dry with T-Td depressions of 10-20 degrees in some locations. As the upper wave moves east, these areas will end up with the higher chances of measurable precip due to the slightly more moist lower atmosphere. With the clouds lingering all night, did not make many changes to the lows which will only fall into the lower 40s.
A weakening low pressure system was drifting away from the region with lingering showers persisting along the wa/or cascades in an upslope flow and over the blue/wallowa mountains areas. Clouds were also lessening in response to a ridge of high pressure building into the region. Sky and pops and weather were modified some along with the temperatures that are expected to fall into the 30s with some 20s over the higher elevations.
Another cold front will move across the TAF sites Monday morning, with north winds following its passage. /Issued 355 PM CDT Sun Apr 8 2018/ A short wave trough will approach the Panhandles tonight and should bring some convection, mainly showers, to the Oklahoma and possibly the far northwestern Texas Panhandles.
A weak trough passing through has brought several waves of low to mid level cloud cover. becoming light northerly Monday morning as high pressure works in from the north. /Issued 327 PM CDT Sun Apr 8 2018/ Mid level trough axis sweeping across the area this afternoon, resulting in some light radar returns that are not reaching the ground. Skies should clear some as the trough continues to pull away from the region tonight.
For now, have gone with higher chance PoPs, with the highest chance east and southeast. Otherwise, a much milder night is expected with the low clouds hanging tough at least through the mid-morning hours on Monday.
Little accumulation expected and main impact will still be wet roads from daytime snow freezing tonight, and causing some slick road surfaces. High pressure should settle over the FA on Monday with much lighter winds. On Monday night, high pressure builds southward into the Central Plains yielding a quiet night.
920 PM PDT Sun Apr 8 2018 A high pressure ridge will move over California on Monday, temporarily shifting surface winds offshore, shrinking the marine layer, and boosting temperatures.
Also, added in some chances of light snow through the night as a second decent short wave trough drops in from the northwest. This event is panning out to be on the higher end of forecast totals, and even above in many cases. A building ridge over the Plains will bring warmer temperatures midweek. By the end of the week another potent low pressure system will move into the Plains. There is still a lot of uncertainty regarding placement of the low, and that will have an effect on temperatures and precip type.
Overnight lows tonight will fall into the low to mid 30s. Given the short lived time frame below freezing, we will not be going with a Freeze Warning tonight. One more cold front, that is expected to be a dry passage, will occur on Monday.
951 PM EDT Sun Apr 8 2018 A series of low pressure systems will track offshore the southeastern U.
619 PM CDT Sun Apr 8 2018 A cold front which has already pushed through KPVW and KCDS will move through the KLBB terminal within the next hour or so. As this low sinks southeastward across the South Plains a front will bring an abrupt northerly to easterly wind shift through the late afternoon and evening hours.
1051 PM MDT Sun Apr 8 2018 Current surface analysis shows low pressure over northeast NE, with frontal boundary sliding south of the forecast area. Ridge is in place along the west coast. Snow accumulations up to 2 or 3 inches are possible over the higher elevations of the northern Black Hills and the Bear Lodge Mts, with little or no accumulation expected elsewhere.
Stalled frontal boundary just to our south will lift back through east central Florida as a warm front overnight tonight.
However, with temps generally in the mid 40s and dewpoints generally in the mid 20s, it is going to take some significant moistening of the lower atm levels before anything other than a few drops of rain are felt across the mid state region. There maybe even be a slight chance to chance of a wintry mix across eastern portions of the Highland Rim and Upper Cumberland Region late tonight.
Lows tonight are only expected to touch the freezing mark at several locations for a short period of time and should not contribute to additional agricultural concerns overnight.
The High Wind Warning is therefore being allowed to expire.
/Issued 250 PM EDT Sun Apr 8 2018/ High pressure is in control to start the short term. We anticipate cloud cover to scatter out a bit more by late afternoon into the evening as dry air tries to mix into the lowest levels. However, the next wave of low pressure riding a residual boundary to the south is expected to develop this evening and move off the Carolina coast.
Considerably warmer by mid week then a strong storm system to As of mid afternoon, our forecast area lies between separate vorticity maxima, per water vapor imagery: one over eastern SD and the other over western KS. Canadian high pressure will build into the mid MO Valley on Monday, and despite some decrease in clouds, temperatures will remain unseasonably cool with highs in the upper 30s to mid 40s.
Temperatures will be a bit warmer on Monday, but extensive clouds will likely cut into maxes. Ridge axis moves across area Monday night, setting up relatively cool night with below freezing temperatures area wide.
Snow should be confined to the mtns with about 2-4 inches expected over the higher mtns before tapering off late. Otherwise a weak push of cooler air will sink down the plains overnight and bring some minor cooling to areas east of the mtns for Monday but still a mild day with some lingering snow showers over the mtns in the morning.
The cold front that pushed through yesterday will try to shift north as a warm front across Deep S TX tonight, but should generally remain stalled just south of our area. Min temps may actually occur late this evening before stratus develops from east to west as moisture advection in the lowest 100mb increases. Chances for scattered showers will peak Monday evening as a mid level s/w trough advects east across the area and as the H85 front finally advances southward along with a reinforcing sfc cold front.
/issued 252 PM CDT Sun Apr 8 2018/ Skies are mostly cloudy across the forecast area this afternoon with temperatures in the lower 40s to lower 50s. High pressure covers much of the eastern U. High pressure will remain over the region tonight and Monday so dry weather with continue. Monday will see warmer temperatures than today with highs in the upper 50s to mid 60s.
Then, high pressure will bring dry weather to the area midweek. The weekend will see much warmer temperatures and unsettled weather as a strong low pressure system moves from the Plains to the Great Lakes and Ohio Valley. Models in good agreement that an upper wave will move from the Plains to the Ohio Valley tonight as another moves across the lower Great Lakes.
The front that is over central Florida will continue to lift northward through Monday with the highest rain chances (30-50% POPs) from Tampa Bay northward tonight and on Monday.