Aikyam-Lab/Synoptic-Bench huggingface dataset:
326 AM EST Sat Nov 25 2017 A light northerly drainage flow over the region during the overnight hrs with the low level moisture in place will allow for areas of fog that develop over Central Florida to gradually filter into South FL tonight. Drier air will continue to move into South Florida as high pressure builds over the region. No significant change in temperatures is expected as cooler air remains further north. High temperatures will remain near normal with highs in the low 80s and lows from the upper 50s across the northwestern interior sections to upper 60s across the east coast metro areas.
314 AM CST Sat Nov 25 2017 Today and Tonight: Early morning surface observations depict an advancing NE/SW oriented cold front stretching from Southern Quebec to the Southern Plains. High temperatures will range from the the mid 60's in the north to the low 70's in the western and southern portions of the area, where cloud cover will be less. A cooler, drier airmass will begin to filter in behind the front.
406 AM EST Sat Nov 25 2017 An approaching dry cold front will move through the forecast area this evening.
1046 PM MST Fri Nov 24 2017 A cold front is currently moving across the area early this afternoon with north winds gusting 30 to 40 mph.
/ISSUED 950 PM CST Fri Nov 24 2017/ Another quiet night with some southern-passing cirrus along the eastern edge of Baja-centered upper ridging. around 10 degrees warmer with minimum interior low 50 temperatures by sunrise.
1103 PM CST Fri Nov 24 2017 Weak cold front continues to march east across extreme west central Illinois this evening. Winds continue to veer into a westerly direction west of I-55 as the cold front tracks into far west central Illinois. Cold front is approaching the region from the NW this afternoon, compressing the pressure gradient and resulting in a blustery afternoon. These winds are out of the SW with a mid level thermal ridge drifting east. Tomorrow, cool air will keep the highs in the low 50s, with light NW winds. The pattern sets up to repeat again with a cooler weekend behind the front.
Currently, northwest flow aloft as upper level ridging slowly builds west of the Rockies. While still expect low stratus northeast, I did scale back on the aerial coverage a bit based on the last few hours of satellite imagery, and still expect an eastward push this morning/afternoon 15-20Z as a weak warm front moves east across central ND. Upper level ridge off to our west continues to amplify today and tonight.
1243 AM EST Sat Nov 25 2017 A cold front crosses today with limited moisture.
the region will see daytime highs into the lower 60s. high pressure remains east of the CWA with SSW flow over the area. This will allow for slight warmer conditions versus tonight w/ lower to mid 30s across the area.
An area of high pressure at the surface will build across western Kansas today.
Look for increasing clouds during the afternoon as a cold front will slide through the area.
/issued 806 PM CST Fri Nov 24 2017/ Wx map shows weak cool high pressure ridge from the Central Gulf to the East Coast.
1100 PM CST Fri Nov 24 2017 Cold front is moving through the area, bringing an end to a rather mild day. Once the front, mid clouds and light rain move through late afternoon and early evening, skies are quite clear and will remain so overnight and on Saturday as upper ridge moves in and subsidence takes hold.
1047 PM CST Fri Nov 24 2017 Winds were veering in advance of a cold front late this evening, with FROPA at the terminals in the next 1-3 hours. /issued 230 PM CST Fri Nov 24 2017/ Following a minor trough in NW flow tonight and an accompanying cold front, heights will amplify and trend more anticyclonic ahead of progressive ridging for the weekend.
A light northerly wind shift will occur overnight as a cold front moves through the area. the weak cold front will continue to push through Eastern Oklahoma and Northwest Arkansas and exit the region early Saturday morning.
255 AM CST Sat Nov 25 2017 A modest cold frontal push was underway early this morning with wind speeds around 15 to 20 mph expected to wane before daybreak, then ease upwards again with a bit of deeper mixing. Temperatures cooler today, yet will recover to about 6 degrees above normal for most areas by late afternoon.
1109 PM CST Fri Nov 24 2017 No significant aviation impacts despite a weak cold front moving across Arkansas late tonight and Sat morning.
Upper-level trough pivots southward today allowing a surface cold front to move quickly through the area.
230 AM MST Sat Nov 25 2017 An upper ridge building to the west and a weak surface pressure gradient will lead to mostly sunny skies today with warmer than average temperatures, mainly in the 50s, and westerly winds at 5 to 15 mph.
239 AM EST Sat Nov 25 2017 A cold front will move into Northwest PA by morning and sweep southeast across the state Saturday with just scattered brief light rain showers as it passes.
345 AM CST Sat Nov 25 2017 Weak cold front settling into the region early this morning with a few light echoes showing up on radar near the Kansas/Oklahoma border. Cooler air will filter in behind the front, but high temperatures will still remain above normal with afternoon highs topping out in the 60s for much of the forecast area this afternoon. Overall, the weekend will be quite pleasant for November as high pressure dominates the central conus.
Of which, highs will be about 15 degrees above seasonable normal values, with readings peaking in the lower 60s.
the cold front currently bisects Iowa, and it'll drop fast/hard later tonight.
201 AM EST Sat Nov 25 2017 High pressure over the area tonight will weaken Saturday.
158 AM CST Sat Nov 25 2017 A cold front will move through the area from 09Z to 14Z this morning.
1233 AM EST Sat Nov 25 2017 A cold front is working its way through central Wisconsin at this hour. A cold front will move across the area tonight.
Cold front has been making fast progress through the Panhandle this evening, with strong pressure rises noted behind the front. /issued 522 PM CST Fri Nov 24 2017/ /00Z TAFS/ Main concern with this TAF package will be timing of a cold front across the area. /issued 221 PM CST Fri Nov 24 2017/ (Tonight and Tomorrow) An upper level ridge across the western half of the U. Otherwise, another dry cold front will move into the Big Country early tomorrow morning just before 12Z. This will keep temperatures much cooler tomorrow with highs forecast to be in the upper 60s to lower 70s.
High clouds are on the increase from south to north this evening in conjunction with a weak warm front.
340 AM CST Sat Nov 25 2017 Another nice day is expected across the region as a cold front is expected to move through the area.
An upper level trough will exit eastern Wisconsin this morning with a strong 250 mb northwest jet setting up across the Upper Great Lakes tonight. By afternoon even the low levels dry.
302 AM CST Sat Nov 25 2017 Little impactful weather as weak high pressure skirts across the region today.
Much cooler today after the record highs of Friday - thanks to the passage of a cold front and accompanying low level cold air advection.
Areas of freezing fog continue over portions of the Washington Columbia basin into the Yakima and Kittitas valleys this morning. For the remainder of the forecast area satellite shows cloudy skies as the upper low approaches the Pacific northwest. As the upper low moves inland this evening and overnight expect this will be the time period with the most precipitation.
Winds becoming more southwesterly as the morning progresses, and warmer temperatures moving into the region along with ample sunshine. With a building thermal ridge over the Plains working its way east, temperatures will remain well above normal today.
245 PM CST Sat Dec 2 2017 An upper level trough of low pressure off the coast of the Pac NW will cause a weak upper level ridge to push across the region tonight through Sunday. 925 and 850 mb temps associated with the ridge are between 1.
Mostly sunny conditions will prevail across western/central ND, with highs in the lower 50s southwest and south central, to 40s elsewhere, as advertised previously. Lows tonight will be in the low to mid 20s. The broad h500 westerly flow for much of November will give way to a Ridge-Trough pattern allowing the arctic air to move south. Although models have been fairly benign as far as precipitation up until today, the GFS now develops a closed upper low along the strong baroclinic zone across Wyoming-South Dakota-Minnesota tracks this low northeast.
139 PM MST Sat Dec 2 2017 Slight upper ridging covers much of the western CONUS, as an upper low pushes into the Pacific Northwest. Southwest flow will increase Sunday as the incoming trough pushes the ridge eastward. The upper trough will cross the Rockies Sunday night, and a cold front will begin moving through the region.
257 PM EST Sat Dec 2 2017 Pleasant and mild weather across the lower Ohio Valley at this hour. Overnight lows will fall into the low to mid 30s, with a few upper 20s up in the Kentucky Bluegrass. 850mb/700mb temperature are slightly warmer Sunday, so plan on temperatures being a few degrees warmer tomorrow than what we're observing today.
By Sunday a low pressure system and associated cold front moving across the Great Basin will impact northern Arizona.
Latest surface analysis showing cold front just coming onshore along the Washington and Oregon coast this afternoon. Very cold open cell cumulus around the low offshore indicating a pretty cold system.
252 PM CST Sat Dec 2 2017 The upper level closed low is currently over the Baja Peninsula. Meanwhile, a low pressure trough will move into the Pacific northwest.
By late morning, temperatures were already pushing through the 50s, headed toward afternoon highs in the lower and middle 60s, under mostly sunny skies. Prevailing sfc ridging influences continuing.
/issued 1030 AM CST Sat Dec 2 2017/ Water vapor imagery shows a flat and dirty ridge over the ArkLaTex this morning. In fact, temperatures should be 3 to 5 degrees warmer today than yesterday.
242 PM EST Sat Dec 2 2017 High pressure through the weekend.
320 PM CST Sat Dec 2 2017 Water vapor continues to show a flat dirty ridge over the region this afternoon. The cloud cover should be on the increase tonight and that combined with higher dew point values will result in a warmer night tonight. Although we should still be under the influence of the ridge on Sunday, models are showing more cloud cover with the southwesterly flow aloft as well as hinting that a few showers could develop.
By late morning, temperatures were already pushing through the 50s, headed toward afternoon highs in the lower and middle 60s, under mostly sunny skies.
A warm front looks to then set up with a 700 mb low moving east across the central zones. Dry slot and warmer temperatures will likely hamper snow amounts from Glasgow east and points south. NW flow will take over as trough really digs to our east.
305 PM CST Sat Dec 2 2017 At 2 PM, high pressure was over the eastern US and a weak trough of low pressure extended from central OK into west central Texas.
1032 AM MST Sat Dec 2 2017 Upper level analysis has near zonal flow across the CONUS with very weak ridging across the northern Plains and a trof just off the coast of the Pacific Northwest. At the surface, high pressure resides across the central Plains, with a weak trof across central Montana into eastern Wyoming. Weak ridging will slowly shift east this weekend as the Pac NW trof moves onshore tonight. West to southwest boundary layer flow ahead of this trof will continue to advect warm air into the region, with above average highs today and Sunday, in the 50s and lower 60s.
Broad upper level ridging extends from the central Gulf of Mexico northward through the Ohio River Valley and over the Great Lakes region. This ridge will slip eastward off the east coast of the U.
324 PM CST Sat Dec 2 2017 High pressure is dominating the weather map this afternoon, centered in the Plains as weak waves ripple along the flow aloft through the Great Lakes. However, the ridge axis is still to the east and will be moving over the region tonight. Weaker winds under the ridge should allow for some fairly efficient radiational cooling. but starting a little warmer than previously forecast as well with todays highs.
240 PM CST Sat Dec 2 2017 Weak low level flow due to high pressure will continue through tonight. This low level flow will push temperatures back into the upper 60s to perhaps low 70s.
The region will be on the southside of a warm front (a pro for fog) that will lift warmer moist mid-level air atop a cooler surface dome of air. A near calm wind field and a warm frontal scenario suggest that any fog or low ceilings will struggle with category improvement through the day tomorrow.
309 PM CST Sat Dec 2 2017 Mild pattern setting up for tonight into Sunday as large upper level trough works into the Pacific Northwest and increasing southerly flow develops ahead of this disturbance across the plains. Expect a fair amount of high clouds, and this combined with increasing southerly winds, should keep elevate locations a bit warmer than more sheltered sites.
Meanwhile, local radars are only detecting isolated showers with the majority on the distant waters beyond 20 nm south of the Lower keys. Surface wise, a massive region of high pressure is smothering the eastern United States and down into the Florida peninsula.
1236 PM EST Sat Dec 2 2017 VFR conditions will persist into Sunday as high pressure remains in control across the region. Any clouds assoicated with mid level waves tracking near the area should stay above 10kft with the wealth of dry air in the lower atmosphere.
359 PM CST Sat Dec 2 2017 We will see two more days of unseasonable warmth before much cooler temperatures move into the area.
Sunday: High pressure will build across the mid-Atlantic on Sunday behind the cold front. Sunday's high temperatures will be a few degrees cooler than the past few days (mid to upper 70s), but still above normal for this time of year.
325 PM EST Sat Dec 2 2017 High pressure will keep the region unseasonably warm and dry through the weekend.
414 PM EST Sat Dec 2 2017 Weak high pressure aloft continues to dominate the weather pattern this afternoon, maintaining dry and pleasant weather over South Florida.
229 PM MST Sat Dec 2 2017 Benign weather under westerly flow aloft today will shift to southwesterly by Sunday in advance of a vigorous upper level trough moving inland over the Pac NW coast. Timing of the trough axis oriented NE-SW, bisecting the West Slope by late Sunday night, is in good agreement among the models. Moisture will be increasing and orographic showers are possible by late in the day over the higher terrain and northeast UT/northwest CO closer to the approaching front. The cold front looks to move quickly through the area NW to SE beginning around sunset in northeast Utah. Snow levels will initially be over 8000 feet, but will crash to the valley bottoms with the passage of the cold front.
Until then, expect the low clouds/stratus that currently envelops most of central NC to to remain largely intact, with clearing then spreading west to east just through the mid to late morning hours.
A weakening zonal flow aloft and much drier air in the lower/mid levels will contribute to a dry period across western Kansas through late Sunday afternoon. This will draw slightly warmer air into western Kansas and keep lows from dropping below the 30s(F). A developing lee side trough will strengthen across eastern Colorado Sunday resulting in a stronger southerly flow across the region, and pushing H85 temperatures well up into the teens(C). Expect to see highs up into the mid to upper 60s(F) across central Kansas to the lower to mid 70s(F) in southwest Kansas Sunday afternoon. More breezy south winds and warmer temperatures are expected Sunday morning, resulting in afternoon highs well into the 70s over most of the area.
233 PM MST Sat Dec 2 2017 An upper level trof of low pressure will approach the region from the west tonight and gradually move through the region on Sunday.
241 PM CST Sat Dec 2 2017 The closed upper low over Baja California will open up as it moves east and will pass over the South Plains as an open wave Sunday. Southwest flow has brought moisture from this low to the region in the form of low clouds, which have kept temperatures on the cooler side this afternoon. While moisture will increase and dewpoints will reach the low 50s Sunday afternoon, most of the energy with the wave will stay to our south with only some sprinkles possible for the South Plains and Rolling Plains.
1030 AM CST Sat Dec 2 2017 Water vapor imagery shows a flat and dirty ridge over the ArkLaTex this morning. In fact, temperatures should be 3 to 5 degrees warmer today than yesterday.
Bulk of the rain/snow is tonight as the upper low center moves inland. An upper trough situated off the Pacific Northwest coast will move inland tonight and then into Idaho on Sunday. A cold front associated with the trough will move through Sunday morning, bringing snow levels down to near valley floors. Temperatures will be colder on Sunday, except in the Lower Treasure Valley where winds will scour out the inversion and result in slightly warmer temps.
1206 PM EST Sat Dec 2 2017 High pressure overhead will maintain dry conditions and seasonably warm temperatures through the weekend. Highs today will generally range from the upper 40s to the lower 50s.
High pressure will move east of the area tonight. A warm front will move into the area tonight and will aid in the development of low clouds toward morning. At the surface, high pressure will be in place east of the forecast area and a weak low will be making its way east along the TX/OK border.
1228 PM EST Sat Dec 2 2017 A weakening area of high pressure will remain across the region through today.
300 PM CST Sat Dec 2 2017 High pressure sitting over the area and some weak dry air advection has helped to clear clouds out of the area this afternoon. However, for areas along and east of I-65 dewpoints are not expected to change much and the lingering clouds today helped to keep temps a little cooler. A somewhat foggy morning starts the short-term period Sunday but with high pressure still over the area expect any clouds to clear out quick.
1034 AM MST Sat Dec 2 2017 Early morning satellite imagery reveals some mid level cloud cover over the central and northern mountains as a bit of moisture remains in the wake of a weak trough.
1224 PM EST Sat Dec 2 2017 High pressure through the weekend.
307 PM CST Sat Dec 2 2017 Tonight through Sunday: Weak high pressure will maintain a stagnant airmass over the ArkLaMiss in the near term. The low sun angle this time of the year has made the erosion of morning stratus a slow process, and boundary layer moisture remains relatively high as a result. With crossover temperatures in the lower 50s and overnight lows expected to drop well into the 40s, fog is expected to redevelop in a similar area as last night. Otherwise, expect temperatures to rebound into the lower 70s Sunday afternoon once stratus clears out.
The thermal trough is expanding offshore this afternoon with NE winds at the ridges.
Advection of colder/drier air should result in minimum temperatures from the upper 20s across the Alleghenies to the mid/upper 30s across the lower Susquehanna Valley. The synoptic pattern combined with enough gradient wind should preclude frost formation on ridges (where 5 mph or more will impede sufficient radiational cooling for frost formation). Valleys however should see less wind and with Mins between 34 and 36F from the Central Mountains through the Ridge and Valley Region. mentioning little or not frost for the ridges. Min temps will get close to freezing over the central zones but confidence in widespread freezing conditions/warning is low. Unseasonably cool/broad cyclonic flow continues to dominate the large scale pattern on Monday as deep upper low remains nearly stationary over western New England.
156 PM EDT Sun May 7 2017 Upper air pattern consists of a 500 mb ridge across the plains and troughs in the western and ern U.
Dry weather with warming temperatures will dominate the first half of the week, before cooler temperatures with increasing chances for precipitation return to the region. Numerical guidance continues to indicate ridge amplification will commence overnight, with 850mb temperatures climbing around 5 degrees Celsius overnight. This show allow for lows to be a good 7 to 10 degrees warmer across much of the interior compared to last night. Subsidence under this ridge will help keep skies mainly clear most of the time.
This area of high pressure will move off the east today and a light southerly flow will begin. A slight upper level ridge will be over the southern U.
Weak high pressure was across the area this afternoon with scattered diurnal cu across areas mainly east of the MS River. The clouds will dissipate by sunset, with light winds tonight as the high moves slowly east. By 12z Monday we should see a warm front across SEMO. It will push ENE through the day coincident with a weak disturbance that will move SE in mid level NW flow, west of a ridge across the Plains.
225 PM MDT Sun May 7 2017 20z surface analysis had low over southeast MT with lee trough into western NE and cold front into southwest WY. Water vapour matinee showed upper ridge shifting east of the CWA with upper low spinning over CA. Temperatures will be noticeably cooler, but seasonal.
251 PM EDT Sun May 7 2017 Upper air pattern consists of a 500 mb ridge across the plains and troughs in the western and ern U. As a high pressure system builds into the region tonight into Monday winds will diminish to 20 knots or less and remain below 20 knots through the rest of the forecast period.
147 PM EDT Sun May 7 2017 Low pressure will maintain precipitation chances early this morning before building high pressure returns mainly dry weather through the first half of the week.
A narrow ribbon of instability lifts through the area after midnight ahead of a surface warm front. The very warm airmass that currently resides in areas along and west of the Missouri River will slide eastward ahead of this low.
A cell of high pressure will drift southeast through AL into GA tonight. A modest ridge-valley split is expected with lows in the m-u40s in valleys, and l50s atop the higher elevations above the inversion.
650 PM EDT Sun May 7 2017 VFR conditions will prevail as dry air funnels through along large area of surface ridging extending south from main high pressure well north over Canada. Despite nearly full sunshine, highs today in the lower to mid 50s will be 10-15 degrees below normal followed by a run at record lows tonight/Monday morning outside of metro Detroit.
1154 AM MDT Sun May 7 2017 Some mid and high level clouds over mainly the western parts of the CWA this morning moving northward in southerly flow ahead of an upper low currently along the SoCal coast.
The ridge to the west begins to strengthen and this will allow the forecast area to warm up for the next several days.
317 PM CDT Sun May 7 2017 Upper ridge continues to be centered over the country's midsection, sandwiched between two powerful low pressure systems on either coast. The ridge will continue to slowly and resistantly drift ewd as we move into the first half of the work week, which will continue to spell fair wx and warming temps.
Monday, a cold front will push through the forecast area and usher in somewhat cooler temperatures, with highs from the low to mid 70s northwest to lower 80s southeast. The balance of the day looks dry, as thunderstorms begin to develop in eastern Colorado well upstream of a closed low situated over Baja Mexico.
Mid level moisture is epxected increase over the Mexican Plateau over the next 24 hours, so there could be a few pockets of convection firing off the higher terrain of Mexico and moving to near the Rio Grande by Monday evening.