Aikyam-Lab/Synoptic-Bench huggingface dataset:
Currently, an upper level low was centered over the central SD/NE border. At the surface, a low was centered over the border of MN/IA/WI with a cold front extending westward along the SD/NE border and into eastern Wyoming. Today the upper level low over SD/NE is forecast to track east into southern MN/IA. The surface cold front continues moving south as the Canadian high expands southward across the Dakotas.
1112 AM EDT Mon Apr 10 2017 Upper level ridge continues to slip east today with increasing south to southwest flow.
Scattered to overcast ceilings varying from MVFR to VFR will continue this morning across Eastern Oklahoma and Northwest Arkansas ahead of a cold front pushing southeast through the region.
In the upper levels a ridge is over the Southeast. A low is over the Great Lakes with a cold front stretched from Wisconsin to Texas. Highs will be in the low 80s.
Cold Canadian high pressure will sink across the forecast area late this afternoon through mid morning Tuesday.
/issued 415 AM EDT Mon Apr 10 2017/ Strong high pressure across the region will gradually migrate east and into the western Atlantic through the week while keeping a generally benign weather pattern over South Florida. Meanwhile,models depict a localized trough developing east of the Bahamas during the next couple of days, which gradually moves to the northeast and away form the area. A warming trend continues today with highs climbing into the mid 80s each day this week, and lows hovering the low to mid 60s interior/west coast areas, and around 70 over most locations of the Atlantic coast each night.
A closed upper low will move from north central Nebraska early this morning into northwest Iowa late this afternoon. This will be where the best wrap around snow occurs west of the upper low center. Highs today were lowered a few degrees due to cloud cover effects, and slightly cooler MOS guidance. High pressure continues into Tuesday and Tuesday night with dry conditions prevailing. Warmer temperatures return on Tuesday with highs ranging from the low 60s across the north to the low 70s south of I-80. High pressure continues into Tuesday night.
High pressure will continue to build into the area today then slide east of the CWA tonight. This will lead to cooler northerly winds today shifting to the southeast tonight. Cooler temperatures are expected today with highs ranging from the lower 60s across west central Kansas to around 70 degrees across south central Kansas. The dry weather pattern continues Tuesday with a weak upper level ridge building over the Plains.
711 AM EDT Mon Apr 10 2017 A high pressure system will continue the dry weather through today, though enhanced fire danger exists with very dry conditions and gusty winds expected. A weak cold front moves through Tuesday/Tuesday night. High pressure for mid week. Large upper ridge across the eastern U. A weak cold front will push through the region Tuesday/Tuesday night, providing some showers and thunderstorms.
958 AM EDT Mon Apr 10 2017 High pressure remains centered off the Mid Atlantic coast through mid week.
814 AM EDT Mon Apr 10 2017 A high pressure system will continue the dry weather through today, though enhanced fire danger exists with very dry conditions and gusty winds expected. A weak cold front moves through Tuesday/Tuesday night. High pressure for mid week. Large upper ridge across the eastern U. A weak cold front will push through the region Tuesday/Tuesday night, providing some showers and thunderstorms.
Cigs are currently MVFR across the Coastal Bend, with a higher VFR stratus ceiling over top of the lower decks.
Over the next few hours expect temperatures to fall into the upper 50s to the lower 60s in most locations. As we head into tonight and Tuesday, clouds will continue to thicken across the region as a cold front moves in from the west. Highs will range from the upper 60s in the west to the lower 70s in the east. Surface cold front is expected to exit the region Tuesday evening.
This may be a bit overdone though, as the 00Z ECMWF, and to a certain extent the NAM, bring a minor disturbance eastward over the area tonight into Tuesday that will interact with the cold front and produce more widespread showers and some thunderstorms, mainly from the Boot Heel through west Kentucky.
Morning water vapor satellite show upper trough swinging through the interior NW. Area of showers on the leading edge of the trough is pushing through southwest Idaho this morning, with a quick 1-2 inches of snow in the mountains and rain showers in the valleys. Upper trough the PacNW Oregon will track to the northeast and bring showers across portions of SE Oregon and SW Idaho today, mainly north of a Burns-Boise-Fairfield line. The showers will taper off this evening as the troughs pushes into Montana and an upper ridge builds into the area overnight. The next Pacific system will bring a slight chance of showers to SE Oregon and the higher terrain of SW Idaho Tuesday afternoon. Temperatures will trend warmer each day with highs close to normal on Tuesday.
Highs will be a degree or 2 warmer than yesterday. A weak cold front is expected to bring a chance for showers and isolated thunderstorms starting late tonight northwest, and gradually moving across the area Tuesday.
Low level clouds continue to erode and with high pressure continuing to build in should see plenty of solar today. Clouds and warmer column should hold minimum temperatures in the low/mid 30s.
TFJ The upper level pattern shows Northeast Montana in the middle of a split trough. A weak trough connection between the two will continue low the cooler temperatures, low clouds, and isolated showers today. A larger trough in the West moves across the Divide this afternoon, spinning off a clipper into southern Canada tonight and Tuesday.
830 AM MST Mon Apr 10 2017 Strengthening high pressure aloft will bring warming temperatures into the middle part of this week as well as very dry conditions. The low this morning at Sky Harbor of 56 was 5 degrees cooler that the previous morning while the low of 46 at Casa Grande Airport was a full 9 degrees cooler than the previous day. A deep and nearly stationary upper level trough is forecast to sit just off the Pacific Northwest through the foreseeable future. This type of synoptic pattern will result in a series of low pressure systems affecting northern California and the Pacific Northwest, but easily remain well north of our region.
624 AM CDT Mon Apr 10 2017 In the near term, the main focus will be the potential for continued shower/thunderstorm activity along and just behind a southeastward moving cold front. A few isolated showers and storms will remain possible along the front especially east of Highway 65 over the next few hours, then will end as the cold front settles south of the region. Cooler temperatures and drier air will gradually sink into the region, but as the parent upper low lifts northeastward today, the coldest air will deliver only a glancing blow to our north- western CWA, and temperatures may still reach the low to even mid 70s south of the Missouri River where winds will be more westerly and cold-air advection will be weak.
Best chances of showers and thunderstorms looks to be on Tuesday, favoring the western counties, where the moisture is the highest.
1053 AM EDT Mon Apr 10 2017 High pressure will continue to drift east to Bermuda through Tuesday night.
750 AM EDT Mon Apr 10 2017 Southerly flow, under high pressure aloft, will maintain warm and dry weather into Tuesday morning. A weak cold front will bring the risk for showers or a storm Tuesday and Tuesday night. Ridging remains in place through much of the day, with even warmer temperatures as compared to yesterday. A weak cold front will slowly make its way through the Upper Midwest tonight, reaching Western Ohio by dawn Tuesday. Initially, deep moisture will be sparse, as well as large scale ascension, so a lot of the initial energy associated with the front will get used up breaking down the strong ridge.
Cold front picking up southward momentum late this morning and is close to clearing rest of OUN CWA.
Sunshine is expected Tuesday as weak ridging sets up. Warmer air will advect back into the area with highs in the 50s to low 60s. Generally dry and milder conditions will develop for the rest of the week as a weak ridging pattern remains over the region.
944 AM EDT Mon Apr 10 2017 High pressure will linger over the western Atlantic through early this week.
1123 AM EDT Mon Apr 10 2017 A high pressure system will continue the dry weather through today, though enhanced fire danger exists with very dry conditions and gusty winds expected. A weak cold front moves through Tuesday/Tuesday night. High pressure for mid week. Large upper ridge across the eastern U. A weak cold front will push through the region Tuesday/Tuesday night, providing some showers and thunderstorms.
zonal flow at 500mb and increased ridging at H7 will commence over the central Plains today on into Tuesday night.
1000 AM EDT Mon Apr 10 2017 High pressure remains centered off the Mid Atlantic coast through mid week.
High pressure remains centered over the Deep South, keeping Central Alabama again dry and allowing the region to warm up a few more degrees. This added moisture will keep the region a few degrees warmer overnight.
The remnants of the SD/NE upper low will move through the forecast area tonight and early Tuesday, with the main deformation zone forcing passing through northern WI. Although models offer different scenarios, there is some indication that mid-level moisture will get stripped out late tonight into Tuesday morning, leading to the potential for some freezing rain, and local ice accums of a tenth of an inch or less.
/issued 434 AM CDT Mon Apr 10 2017/ A no-frills cold front dividing the CWA from W-E at 3 AM is on pace to exit our southern row of counties by 6 AM, but not before colliding with a dryline poised from Jayton to near Guthrie. As cool surface ridging spills south throughout the day, initially very breezy NNE winds will quell before veering east by midday. Higher dewpoints behind this front and upslope winds should only hinder deep mixing, which is why we're keeping max temps on the cooler side of the MOS spectrum.
A weak cold front will move through the region Tuesday with little more than sprinkles.
A few upper level disturbances will bring cooler temperatures to the region with a few chances of light rain and gusty winds Tuesday through Thurday.
The cold front is moving ashore as of 3 AM. High pressure will move into the area this afternoon but any drying will be short lived. A strong low pressure is expected to move inside 130W Tuesday afternoon. While both the GFS and ECMWF show plenty of precipitation with the low pressure, the initial concern has to do with strong south to north pressure gradient in the coastal waters as well as inland. Another reason why we feel confident on windy conditions on Tuesday is that the Low is expected to occlude and move north along the coast. While this low pressure is not forecast to be as deep as the low that moved up the coast a few days ago, it will still be deep enough to generate widespread strong winds.
High pressure is still dominating the weather pattern but it is weakening its hold on the region as it moves further off the Mid atlantic coast. With the ridge off the mid atlantic coast today it will put GA in moist southerly flow so not expecting any fire weather issues today. 01 A weak cold front moves into n GA Tuesday night with mainly small chances for showers over n GA as instability is limited.
Increasing winds may mix out the low levels a bit more than models suggest, so kept dewpoints on the lower side of model consensus. This will put some areas of the mid state into the 20 to 30 percent min RH range, which will mainly be along the Plateau and some areas that see slightly warmer high temperatures to increase the RH spread. A cold front will push to near the Ohio River by 12z Tuesday, accompanied by a band of showers and thunderstorms.
This is occurring in advance of a cold front that extends acrs OK into north TX. A cold front does approach the region on Tuesday, but it basically washes out and no significant cooler weather or wind shift is expected. The actual rain totals on Tuesday are trending to the lighter side, with the highest totals expected in central Louisiana, but even that is less than a quarter of an inch.
A cold front does approach the region on Tuesday, but it basically washes out and no significant cooler weather or wind shift is expected. The actual rain totals on Tuesday are trending to the lighter side, with the highest totals expected in central Louisiana, but even that is less than a quarter of an inch.
Cooler today in the wake of a cold FROPA the other day, highs in the 40s. Currently, an upper level low was centered over the central SD/NE border. At the surface, a low was centered over the border of MN/IA/WI with a cold front extending westward along the SD/NE border and into eastern Wyoming. Today the upper level low over SD/NE is forecast to track east into southern MN/IA. The surface cold front continues moving south as the Canadian high expands southward across the Dakotas.
935 AM EDT Mon Apr 10 2017 Bermuda high pressure will extend west into the Carolinas until a cold front settles through the region late Wed and Wed night. This will allow for a continuation of dry weather, with some thin cirrus overspilling the ridge.
High pressure ridge north of the area will produce an elevated onshore flow across the region today, with easterly winds becoming breezy this afternoon, especially along the coast from the Cape southward. (Previous Discussion) Strengthening high pressure just offshore the middle Atlantic coast will lead to increasing easterly winds and poor conditions for small craft operators.
1200 PM EDT Mon Apr 10 2017 High pressure will linger over the western Atlantic through early this week.
1045 AM EDT Mon Apr 10 2017 High pressure is centered east of the Mid-Atlantic states, driving moderate to fresh, northeast to east breezes across the coastal waters of the Florida Keys. Skies are mostly sunny, although small cumulus tufts continue to stream in from the warmer Atlantic waters. This appears to be due to two factors: the cooler shelf waters have backed and decoupled winds slightly, and a weak baroclinic zone southeast of South Florida has deformed the ridge's gradient. Temperatures should top out in the lower 80s, and rain chances remain slight at best.
1052 AM EDT Mon Apr 10 2017 A sharp ridge aloft and attendant warm air will provided for 2 very warm early April days to start the work week.
The cold front will switch winds to the northwest behind the front, but the colder air associated with this system will lag behind closer to the upper level low.
Early this morning, a cold front was located across northeast Kansas steadily moving eastward. Temperatures behind the front have quickly fell into the low 50s, while upper 60s can still be noted in east central Kansas where winds are still southerly. Temperatures will be fairly warm ranging from the low 60s in north central Kansas to the low 70s in east central Kansas. A secondary cold front looks to push south across the area this afternoon with more reinforcing cold air behind it. Due to this, low temperatures will be much cooler than average with lows in the 30s, approaching freezing near the Kansas-Nebraska boarder.
1039 AM CDT Mon Apr 10 2017 Cold front continues to work its way across far sections of eastern Oklahoma this morning.
Slightly warmer today under a mostly sunny sky as high clouds pass through. Upper heights and low level thickness values rise Tues resulting in highs 5-8 degrees warmer than today.
With the high sun angle and marginal temperatures even in by middle of winter standards, not expecting any snow accumulations today unless snow is particularly intense. By tomorrow morning, a ridge of high pressure will be pushing east across the forecast area on the heels of the departing system from today. Skies will clear from west to east through the day, and temperatures starting out near or below freezing will rebound into the 50s as low level winds turn southwesterly in the afternoon and warm air advection begins.
944 AM EDT Mon Apr 10 2017 High pressure northeast of the area will maintain an onshore flow.
Elsewhere, high pressure will increase with temperatures reaching into the lower 60s under mostly sunny skies. Overnight, temperatures will drop to just below freezing.
1047 AM EDT Mon Apr 10 2017 A high pressure system will continue the dry weather through today, though enhanced fire danger exists with very dry conditions and gusty winds expected. A weak cold front moves through Tuesday/Tuesday night. High pressure for mid week. Large upper ridge across the eastern U. A weak cold front will push through the region Tuesday/Tuesday night, providing some showers and thunderstorms.
Strengthening high pressure aloft will bring warming temperatures into the middle part of this week as well as very dry conditions. A deep and nearly stationary upper level trough is forecast to sit just off the Pacific Northwest through the foreseeable future. This type of synoptic pattern will result in a series of low pressure systems affecting northern California and the Pacific Northwest, but easily remain well north of our region.
Core of upper low is moving into the Nebraska panhandle this morning, leaving some weak low level dynamics/moisture advection in place over southeast Montana for continued light snow into the mid morning hours. Temperatures have dropped below freezing across much of the area and MT/WYDOT indicating slick/snow covered roads across the region. By this afternoon will see a Pacific system move across NW MT, dragging a trof through the area into tonight.
What the models do agree on is the overall timing of the approaching cold front has slowed down versus previous runs. Water vapor imagery this morning reveals a compact upper trough over the upper midwest with ridging stretching from the eastern gulf to the mid Atlantic states. Latest surface analysis places an area of low pressure with the trailing cold front located just to the northwest of the state. A second area of low pressure is also showing up on the front over the Texas hill country.
701 AM EDT Mon Apr 10 2017 High pressure centered off the Carolina coast will circulate unseasonably mild air into the region through Tuesday. A cold front will sink south on Tuesday accompanied by a few showers and thunderstorms.
High pressure is situated over the southeast U. while a cold front extends from the Upper Mississippi Valley into the Southern Plains. A cold front will approach and by the end of the day will be located from St Louis into NW Arkansas and will push into the Mid-South tonight. Surface dewpoints will climb into the lower 60s in advance of the front and some marginal instability will develop with SBCAPES of 500-700 J/KG expected. Some shower and thunderstorm activity may linger into Tuesday evening but the upper trof moves east with the main lift and deeper moisture.
940 AM EDT Mon Apr 10 2017 High pressure centered off the Carolina coast will circulate unseasonably mild air into the region through Tuesday. A cold front will sink south on Tuesday accompanied by a few showers and thunderstorms.
Unstable air in an upper trough will bring showers and the risk for a few thunderstorms to Western Washington today.
a ridge reached from the Gulf of Mexico to Labrador. and a trough stretched from Newfoundland to the Bahamas. The closed low tracks to the Great Lakes region as it become a trough that reaches down to the west-central Gulf coast. The upper ridge rotates out over the Atlantic from the Gulf of Mexico. The high pressure off the eastern seaboard slides east to near 65 West Longitude while continuing to ridge back over the Gulf of Mexico. The ridging both aloft and surface dominate with a stable and generally dry air mass with prevailing easterly low level flow.
758 AM CDT Mon Apr 10 2017 For the 10/12Z terminal forecast, expecting MVFR flight categories to prevail over much of East and Northeast Texas and the lower ceilings may move into adjacent sections of Southwest Arkansas and Northwest Louisiana during the mid morning hours and area wide by mid day. With the approach of an upper level trough of low pressure and an associated cold front that will come up stationary, rain and thunderstorms will gradually increase from the West and Northwest to the Southeast during the day especially for East and Northeast Texas into Southeast Oklahoma, Southwest Arkansas and extreme Northwest Louisiana with strong to severe storms by afternoon this region. This is basically a 24 hour potential watch area for severe development as heating works with approaching cold front, the severe threat will diminish overnight.
824 AM EDT Mon Apr 10 2017 High pressure centered off the Carolina coast will circulate unseasonably mild air into the region through Tuesday. A cold front will sink south on Tuesday accompanied by a few showers and thunderstorms.
1045 AM EDT Mon Apr 10 2017 High pressure ridging into the forecast area from the Atlantic will dominate through Tuesday.
VFR conditions this morning will give way to Cigs of 1-3 kft within the storms but also after the cold frontal passage. MVFR vsbys via light fog is possible after the cold frontal passage. from late morning into the very early afternoon until another vorticity maximum approaches from the sw while the cold front will shift south from central WI. The cold front is expected to accelerate down Lake MI enhancing the convergence for storms but also rapidly cooling the airmass over far ern WI from middle to late afternoon. Medium Much cooler airmass in place with surface/850 lows to our east and low level thermal trough in place. Lingering low level troughing and cool pool should result in a good deal of cloud cover with this regime.
Upper low will move across northern Iowa today with plenty of clouds over the state, especially over the north. Precipitation will wrap around behind this low and be primarily confined north of Highway 20.
low pressure systems will move inland to the north not having much impact on Southern California other than to modulate the strength of the onshore flow. Warmer today.
Dry weather is anticipated through much of the day, but rain chances will increase after 21z, ramping up overnight as a weak cold front moves toward the area. High pressure is situated over the southeast U. while a cold front extends from the Upper Mississippi Valley into the Southern Plains. A cold front will approach and by the end of the day will be located from St Louis into NW Arkansas and will push into the Mid-South tonight. Surface dewpoints will climb into the lower 60s in advance of the front and some marginal instability will develop with SBCAPES of 500-700 J/KG expected. Some shower and thunderstorm activity may linger into Tuesday evening but the upper trof moves east with the main lift and deeper moisture.
Weather map analysis shows a narrow mid level ridge in a northeast to southwest orientation from the east US coast to the Gulf. At the surface, high pressure holds from off the Mid-Atlantic coast, southwestward into the southeast. Today's highs range from the lower 80s interior to mid to upper 70s beaches.
1106 AM EDT Mon Apr 10 2017 A sharp ridge aloft and attendant warm air will provided for 2 very warm early April days to start the work week.
Upper ridge to the west from the west coast to the Rockies. Cold front off shore over the east coast into the southern Gulf of Mexico. warmer to the northeast with minimal snow cover. Some weak cold frontal boundaries moving through in Northwest flow.
With an upper level ridge over the area today, the weather will be dry acrs southeast and south central CO. Westerly winds increase ovr the mtns and nearby lower elevations tonight and this will help keep temps a little warmer in these locations.
229 PM CST Sat Jan 7 2017 Another cold night expected tonight, but quite a bit warmer than last night.