Aikyam-Lab/Synoptic-Bench huggingface dataset:
417 AM EST Thu Nov 30 2017 High pressure today gives way to the next round of precipitation arriving this evening. High pressure returns during the day Friday, leading to a rather quiet and mild weekend. Today will start off dry as the ridge of high pressure continues to shift eastward. Winds will be a bit gusty, especially in the Champlain Valley this afternoon with winds 15-25 mph and gust up to 35mph while other locations should remain in the high teens to low 20s for gusts. Models continue to lower QPF with the northern counties and higher elevations still seeing the highest amounts around 0. Overall, most of the higher elevations should see mainly snow showers with the valleys seeing rain showers switching to a mix before things quiet down early Friday morning.
350 AM CST Thu Nov 30 2017 Slightly cooler highs are forecast this afternoon. Model consensus is in the low to mid 50s, with MOS running just a few degrees warmer than the models overall this afternoon.
1116 PM EST Wed Nov 29 2017 High pressure will prevail across the area through tonight. A weak cold front will approach Thursday and move into the area Thursday night.
Fair and dry weather returns on Friday under a dome of high pressure. A weakening frontal system attached to a cyclone well north into Ontario will approach the region late today.
135 AM MST Thu Nov 30 2017 An upper level low stalled offshore the southern CA/Baja coast through Friday night will de-amplify as it becomes progressive and tracks east across the Desert SW Sat/Sat night.
305 AM EST Thu Nov 30 2017 A weak cold front will traverse the region today, bringing scattered showers to most of the region. Expect cooler overnight lows with most spots dropping into the 30-35 degree range.
433 AM EST Thu Nov 30 2017 A weak cold front will approach today and move into the area tonight.
317 AM EST Thu Nov 30 2017 High pressure over the Northeast U. A dry cold front that will cross the area late tonight.
440 AM EST Thu Nov 30 2017 High pressure will drift east of the region today, while a frontal system approaches from the Ohio Valley. A cold front will cross the region tonight, bringing scattered light showers. High pressure will then rebuild and bring a return of dry weather for Friday and on through the weekend. H5 ridge axis propogating east of the Commonwealth while a shearing upper trof undercuts that ridge, producing an area of mid level clouds moving across central PA this morning, as per latest GOES-16 IR imagery.
So, the lows for tonight have already been met. Breezy southerly winds will veer to the southwest then west overnight as a trough of low pressure approaches and moves through the area tonight. This is in response to a trough of low pressure pushing into the area later tonight.
1242 AM CST Thu Nov 30 2017 A cold front extends from central Missouri into central Arkansas, and it will sweep swiftly and surely across the FA this morning. Then, the High shifts to the east for the weekend, and we'll moderate some to a seasonally mild wx weekend heading into the first part of December.
1123 PM CST Wed Nov 29 2017 Closed low from earlier this morning across northeastern OK is slowly moving eastward and weakening this afternoon. A weak cold front currently across the Dakotas will move across the bi- state area late tonight and will try and serve as the focus for some isolated to widely scattered showers.
A flat upper level ridge will remain over the Pacific Northwest through tonight. Thus added a mention of patchy fog/freezing fog in these areas.
1232 AM EST Thu Nov 30 2017 A cold front will enter the area later tonight into Thursday, bringing a chance for showers mainly Thursday morning. Clouds will increase with both features with added energy from cutoff low aiding in at least isolated to scattered shower development as the trough passes through in the 10Z to 16Z Thursday window. QPF amounts definitely appear to be trending towards the low side as moisture flux will be rather limited compared to trends of past days.
1117 PM EST Wed Nov 29 2017 High pressure will build in from the west tonight. The high will crest over the area early Thursday then shift east into the maritimes during the afternoon. A weak cold front will push east through the region Thursday night and high pressure will build in from the west by late Friday.
An upper low will continue to move east across Missouri but the airmass in place is so dry that the only impact from that system may be some clouds from late afternoon into early evening. Even at that satellite is revealing that the lower clouds to the south are having a hard time breaking into much more than the far southern tier of Iowa counties. Then later tonight, a trough moving across the Northern Plains tied to a Canadian low, will shift into the Upper Midwest. At the surface a cold front associated with this system will shift across the region and impact Iowa by way of a wind shift and some cooler temps. By Thursday afternoon the upper trough passes and the flow flattens some becoming more west northwest versus north northwest. At the surface, high pressure will build in.
358 AM EST Thu Nov 30 2017 A cold front arriving from the west will bring clouds and showers today.
Cold front is still forecast to move through central Alabama on Thursday.
Some snow was reported in the higher elevations in the northern zones this morning.
106 AM EST Thu Nov 30 2017 High pressure will visit for tonight and early Thursday. A cold front will cross the region on Thursday night, bringing scattered light showers.
This pattern will keep a cooler NW airflow over the region with the high temperatures staying in the mid 50s, still above average for this time of year.
310 AM CST Thu Nov 30 2017 Expect near seasonal normals for temps and dry weather for the next few days as a ridge of high pressure moves rapidly across the plains. Zonal mid level flow will keep things moving along, with the ridge moving rapidly east of the area by early Fri.
Ahead of the low, surface winds have been strong from the south. But as the day progresses, clouds are expected to dissipate under weak high pressure. Temps will struggle under the clouds in the Lake of the Woods region, with highs ranging from the low 30s there.
105 AM EST Thu Nov 30 2017 High pressure over the Northeast U. will build south along the east coast tonight ahead of a cold front that will cross the area on Thursday night. Seasonable temperatures are expected for the weekend as high pressure builds in from the northwest. High pressure over Virginia will build south overnight. A cold front will approach the region late Thursday night into Friday morning.
Higher boundary layer moisture remains along the coast in the Coastal Bend where dewpoint temperatures were in the lower to mid 60s as winds shifted to easterly late this afternoon.
/issued 315 PM EST Wed Nov 29 2017/ High pressure centered well to the north has brought a northeasterly wind to the region. Models indicate a flat 500mb ridge centered over Mexico, which persists through the end of the week, before sliding eastward, but has trouble keeping its northward influence. Thus, the ridge does not quite build over the Florida peninsula. High pressure will keep the northeasterly flow across the region.
/issued 1019 PM CST Wed Nov 29 2017/ Cooler/drier air continues to filter into the region as a cold front makes it way through.
Associated upper short wave trof will continue to press eastward through the GRT LKS through tonight and the northeastern U. Plains ridge complex to slide eastward acrs the area today behind the passing front, with just some streams of cirrus at times partially disrupting an otherwise sunny day. Ongoing dry LLVLs and decent mixing in incoming high pressure gradient make for a lean toward the milder of guidance high temps today. Depending on ridge axis migration speed, some light southerly return flow may commence after 3 AM west of the MS RVR for a halt to the temp slide, but will still play it cold at least in the mid 20s.
1247 AM EST Thu Nov 30 2017 High pressure will visit for tonight and early Thursday. A cold front will cross the region on Thursday night, bringing scattered light showers.
Elsewhere, readings have struggled to rise above the lower to middle 40s under the influence of stratus. Additional saturation in the H8-H9 layer ahead of an approaching cold front is expected to redevelop low clouds later this afternoon into the evening. Low temperatures will be tied to duration of overnight cloud cover, with readings near freezing across far northwest Missouri to the lower 40s over central Missouri.
After that, a pattern change will occur with a massive ridge progged to build over western NOAM as associated eastern NOAM longwave ridging forces CP/arctic air into the eastern half of the CONUS. WAA will increase Sat as a strong trough drops into the PAC NW and deep layer ridging commences to its east.
316 AM CST Thu Nov 30 2017 As of 08Z Thursday morning a mid-level trough was progressing across the southern Canadian prairies. At the surface an anticyclone was centered near the CO/WY/NE border region. As the upper trough in southern Canada continues to eject eastward, mid and upper level moisture will be shunted southeastward. As the surface anticyclone shifts to the east of the CWA overnight, southerly flow will return to the central Plains.
Have increased pops across the forecast area during the day with the highest pops around 60 percent for a portion of the north this afternoon and evening.
411 AM EST Thu Nov 30 2017 Breezy northwest winds will continue this evening following a departing cold front. Today will start off dry as the ridge of high pressure continues to shift eastward. Winds will be a bit gusty, especially in the Champlain Valley this afternoon with winds 15-25 mph and gust up to 35mph while other locations should remain in the high teens to low 20s for gusts. Models continue to lower QPF with the northern counties and higher elevations still seeing the highest amounts around 0. Overall, most of the higher elevations should see mainly snow showers with the valleys seeing rain showers switching to a mix before things quiet down early Friday morning.
Pacific high pressure moves overhead today and is replaced by weak low pressure tonight. High pressure will remain across the central US through the weekend resulting in dry conditions.
1027 PM CST Wed Nov 29 2017 North winds behind a cold front will be generally in the 10 to 15 knot range with an occasional higher gust. /Issued 503 PM CST Wed Nov 29 2017/ A cold front will move through the region late this evening. Southwest winds due to a weak lee trough can be expected until our next weak cold front arrives later this evening and overnight. Temperatures should drop into the low to mid 30s overnight behind the front then top out in the 50s Thursday afternoon.
Scattered echoes showing up to our south are likely not reaching the ground, or at least very little, although dew points in these areas have risen considerably, so at least evaporation below the cloud bases is helping to moisten up the low levels there.
Cooler air will build into the region tonight, as high pressure moves through the lower Missouri River Valley. With dewpoints also remaining in the mid 20s, and clear skies and light winds, we will need to watch for the potential for light fog or freezing fog early Friday morning, especially in the favored low areas and river valleys.
High pressure will shift into the region mid to late morning, with conditions improving to vfr by mid day. Tonight Through Friday Upper low pressure will move through Missouri this afternoon and evening. This upper low will move into the northeast U. An upper ridge over Mexico will build into the southern U. This cold front will move through tonight then a secondary cold front moves through on Thursday. Temperatures will be a few degrees cooler Thursday and even cooler for Friday.
Low pressure over southern Manitoba with and associated cold front will push through eastern ND this afternoon. Moisture associated with the upper trough is falling as a mix of rain and snow along the northern tier counties from Williston to Minot and Bottineau. Cooler on Thursday, but abundant sunshine and much lighter winds.
A cold front moving through early this morning will only bring slightly lower temperatures to the region compared to yesterday. However, extensive high level cloud cover could keep temperatures a few degrees cooler as well.
For 06z Aviation discussion below A cold front from eastern North Dakota southwestward across central South Dakota and the Nebraska Panhandle will continue heading east this evening. Temperatures will cool this evening and fire weather conditions will thus improve, although gusty winds should continue ahead of and behind the cold front tonight.
Lows on track to fall into the mid 50s to lower 60s north, and in the lower to mid 60s elsewhere. Ridging will continue across the area for the next few days. This pattern will continue for the next couple of days as high pressure continues to ridge across the area.
417 AM EST Thu Nov 30 2017 A cold front, will bring showers to the area this afternoon and evening.
Early this morning, a band of light showers with a surface warm front briefly brushed over locations mainly east of the Fox River. Just to the west with the cold front, an area of stratocumulus clouds entering northwest Wisconsin early this morning will be sliding over parts of northern Wisconsin this mornign, while the rest of the region can expect plenty of sunshine. For tonight, transition from a cold air advection pattern to a warmer return flow on the backside of a ridge, may support overnight lows shortly after midnight then become nearly steady. Glance at forecast soundings suggest some potential of lower level clouds developing with the warm return tonight, but a better chance for clouds later Friday ahead of an approaching cold front.
1143 PM CST Wed Nov 29 2017 06Z TAFS A cold front, as denoted by dewpoints, extends from near AEX southwest to near LCH at this hour. A weak and somewhat ill defined cold front extends roughly along the Louisiana/Texas border at this hour. Temperatures will start out a bit cooler but will warm into 70s through the rest of the week and into the weekend.
A cold front is expected to move through the region after midnight local with gusty winds in its wake. /issued 310 PM CST Wed Nov 29 2017/ Quiet weather to continue through the first half of the forecast as zonal flow aloft and a few weak cold fronts at the surface will keep temperatures in check until this weekend. Although wind speeds will not be as strong as with the last front, the airmass behind the front is a bit cooler so highs will be held about 4-6 degrees below today's readings. It will take a bit of time for the low clouds to burn off but we should start to see highs climb back into the 60s Friday afternoon.
232 AM MST Thu Nov 30 2017 Current IR satellite loop shows the upper level trough, which brought windy conditions to portions of the region yesterday, is already moving across the Great Lakes region early this morning. With no polar airmass expected across the plains, temperatures will be slightly warmer than normal for this time of the year on Thursday and Friday, although overnight lows will be chilly and generally below freezing. High temperatures each day will generally range between the mid 40's (west) to mid 50's (east), with Friday likely slightly warmer than Thursday. Kept temperatures a few degrees cooler along the ridges on Thursday due to south winds.
101 AM EST Thu Nov 30 2017 High pressure over the eastern Great Lakes this evening will move off the New England Coast by sunrise. A cold front will quickly move across the region on Thursday with high pressure returning by Friday morning.
High temperatures will be a shade cooler than yesterday, especially in western areas. Given the dry air mass in place, and light surface winds, stuck with overnight lows toward the cooler end of available guidance, generally mid-upper 20s. Mild zonal flow will return Friday, slightly amplifying through the weekend as stronger trough begins to dig into the Pacific Northwest.
Fair and dry weather returns on Friday under a dome of high pressure. High pressure quickly builds overhead this evening. Look for temperatures in the lower to mid-20s early Thursday morning. Any snow accumulations from this system are forecast to be less than 1 inch and confined to the higher peaks of the western Catskills. Friday morning behind the cold front, a cool westerly flow could produce scattered sprinkles/flurries southeast of Lake Ontario under 300 flow. Surface ridging and warm air advection will end this activity by afternoon.
953 PM PST Wed Nov 29 2017 Drier weather is expected to temporarily move into the Inland Northwest tonight as weak high pressure builds over the area.
314 AM EST Thu Nov 30 2017 High pressure will crest over the area this morning before retreating into the maritimes this afternoon. A weak cold front will push east through the region tonight accompanied by some light rain and snow. High pressure and drier air follows late Friday into the upcoming weekend.
18Z surface data has high pressure from the Great Lakes into the mid- Mississippi Valley while a weak storm system organizes in Arkansas.
140 AM EST Thu Nov 30 2017 High pressure will cross the region overnight through Thursday. Low pressure will cross the region Friday. Strong high pressure will build in from the west and crest over the region Thursday morning. The high will then move off the coast into the Atlantic later Thursday as another cold front approaches from the west. Friday night will feature mainly clear skies as high pressure builds across the region.
A cold front over western parts of the CWA will pass across the rest of the area by early evening but no pcpn associated with it.
A weak cold front expected to push through early Thursday morning should finally help clear things out with all locations improving to VFR Thursday afternoon.
A stronger cold front Thursday into Friday. High pressure for the weekend. Weak cold frontal boundary in Ohio River vicinity at 1615Z, with thin strip of cloud cover associated with it. By the start of the period Thursday evening, a cold front and accompanying rain showers will be centered over the Ohio River Valley. High pressure quickly shifts up the Ohio Valley into this region by Friday afternoon, though lingering low-level moisture could still blanket the northern lowlands and mountains in a thin stable cloud layer.
Low pressure to the north will swing a trough of low pressure through overnight, turning winds to the west and northwest.
A zonal longwave ridge axis translates eastward across the western CONUS tonight and tomorrow as a compact H500 vort max races eastward up the Ohio River Valley with an attendant 90 kt jet streak. The low to mid clouds associated with this cyclone will likewise decay as the afternoon and evening progress onwards as depicted by RAP/NAM forecast soundings. Highs on Thursday will be similar to today, albeit possibly a degree or two lower given the weak CAA ahead of the ridge axis. Lows Thursday night fall into the low 30s, before rising back into the upper 50s on Friday afternoon.
126 AM EST Thu Nov 30 2017 A weak cold front will approach today and move into the area tonight.
1142 PM CST Wed Nov 29 2017 An upper-level wave and associated surface cold front will cross central and southeast Illinois overnight into Thursday morning. A low pressure area in northwest AR is still forecast to weaken as it moves northeast into southern MO this evening. As a Pacific high pressure area builds in behind the front, winds will become northwesterly and clouds will clear out. Given the origin of the high pressure area and lots of sunshine, mild temps in the 50s are expected tomorrow. This high pressure will dominate the weather, along with a very zonal flow pattern, for the rest of the week and into the weekend.
1135 PM CST Wed Nov 29 2017 At 3 PM, the southerly winds were increasing ahead of Pacific cold front over the central Dakotas. The cold front will move through the area after midnight tonight. The tight surface pressure gradient ahead and in the wake of this front will keep the boundary layer well mixed; thus, temperatures will be much warmer tonight than what they were this morning. Low temperatures on Thursday morning range from the lower to mid-30s. With the air mass being of Pacific origin in the wake of this cold front, there will be little difference from the high temperatures today (mainly in the mid and upper 40s) for Thursday afternoon.
344 AM CST Thu Nov 30 2017 High pressure has set up just to our south so we can expect deep westerly flow and good mixing.
1117 PM EST Wed Nov 29 2017 High pressure will visit for tonight and early Thursday. A cold front will cross the region on Thursday night, bringing scattered light showers.
246 AM CST Thu Nov 30 2017 High pressure over the western high plains at 08Z will build east through the day bringing considerable sunshine and another day of above normal temperatures to the region.
Subtropical moisture will continue to move clouds into the area this afternoon as a weak upper level low off the coast of sw california gradually moves eastward. Day time temperatures will be cooler than the past several days, but still mild for the time of year. Overnight lows will fall slightly with cooler air behind the front.
A weak trough is moving into middle Tennessee. To the West weak ridging is building in from the west in the wake of the trough suppressing rain chances. As the ridge approaches middle Tennessee and the Alabama state line models have another round of light showers developing and moving across the region. Morning lows should fall into the low 50s. The closed upper low over the southern plains earlier today has opened into a trough that is now located over MS River Valley. The weakening upper trough will exit the region this evening. Lows will be in the lower 50s. A cold front will begin moving through late tonight through Thursday morning. Highs will be a bit cooler on Thursday but still quite mild for this time of year.
Forecast highs are generally in the 40s; some locations in the south may touch the lower 50s.
917 PM MST Wed Nov 29 2017 Winds have decreased significantly across the area this evening and will continue to do so through the night as ridging moves in from the west. Clear skies and a cooler air mass will bring temperatures down into the 20s across much of the area.
Weak ridging across the Gulf of Mexico is leading to north- northwest flow aloft across the peninsula, and ushering in a drier and more suppressed atmosphere aloft. The low level boundary that has been draped across the region is washing out, with RUC analysis showing drier air working in even in the low levels.
Fair and dry weather returns on Friday under a dome of high pressure. A weakening frontal system attached to a cyclone well north into Ontario will approach the region late today. Friday morning behind the cold front, a cool westerly flow could produce scattered sprinkles/flurries southeast of Lake Ontario under 300 flow. Surface ridging and warm air advection will end this activity by afternoon.
1227 AM EST Thu Nov 30 2017 High pressure moves over the area into Thursday, followed by a cold frontal passage Thursday night into Friday. High pressure then builds across the area through the weekend.
245 AM CST Thu Nov 30 2017 A cold front will move through the Mid-South today. Temperatures will remain mild today as the cooler air behind the front will not filter into the region until tonight. Canadian high pressure will build into the region for Friday. Temperatures will be 5-7 degrees cooler with highs ranging from the mid 50s to the lower 60s.
But the front and precip will end by Friday, allowing Friday to be a pretty nice and mild day with weak ridging.
However, it will scatter out after sunrise, as high pressure moves in and the gradient increases. Cooler air will move into the region as well, but it's not a significant cooldown just yet, given zonal flow aloft. Not only that, the high will move through fairly quickly, with winds gaining more of a southerly component by late Friday.