Aikyam-Lab/Synoptic-Bench huggingface dataset:
1122 AM MDT TUE MAY 24 2016 Current surface map high pressure across Montana with weak trof from northeast to southwest South Dakota. Another upper low is located over California. With lack of stronger return flow until this afternoon, RAP/NAM may a little on the high side. Upper low shift into eastern Montana on Wednesday. Persistent upper level troughing over the northwest CONUS will keep active southwest flow across the Northern Plains through the Memorial Day weekend.
312 PM EDT TUE MAY 24 2016 High pressure over the region will continue to support fair weather over the region through Wednesday. High pressure will keep subsidence over the region tonight which will support mostly clear skies. Looking at some cloud coverage by the afternoon which will hold Temperatures in the lower 80s in most areas. Looking at an increase rain chances Wednesday night as a warm front lifts into the area.
151 PM EDT TUE MAY 24 2016 Upper level low pressure centered over Long Island today will move off to the northeast on Wednesday. A noticeably warmer and more summer-like pattern with showers and thunderstorms possible each afternoon and evening is expected to last into the first part of the holiday weekend. slightly cooler weather may arrive for Memorial Day. Overnight lows mainly in the 50s and upper 40s in cooler spots of the western mountains.
317 PM EDT TUE MAY 24 2016 Low pressure surface and aloft will drift northward across the region through early tonight. Warmer weather will return on Wednesday ahead of a cold front. The cold front will bring clouds and a few showers and thunderstorms to the area Wednesday afternoon and evening.
428 PM EDT TUE MAY 24 2016 High pressure with increasing warmth and humidity by Wednesday.
/Issued 355 AM EDT TUE MAY 24 2016/ High pressure and dry conditions will persist across the CWA for the short term period. High pressure will remain overhead today and tonight, but begin to shift offshore by late Wednesday. large-scale upper-level pattern continues fairly static with the larger wavelength troughiness stuck across the rockies and high plains and broad/weak ridging over the east.
136 PM EDT TUE MAY 24 2016 High pressure will prevail over the Southeast most of this week.
412 AM EST Thu Feb 9 2017 It will be windy in the wake of a strong cold front today. The pressure ridge moving into the forecast area behind the front will be near the area late tonight and Friday morning. The ridge will move off the coast Friday afternoon.
315 AM CST Thu Feb 9 2017 Much warmer than normal temperatures are expected today and tonight, which only become more pronounced by Friday. That will allow troughing to developing across eastern Colorado and far western Kansas today.
Any snow should be short lived and with temps above freezing, do not expect any accumulations. For the rest of the afternoon, expect rain showers to increase over the area and continue through much of the evening hours courtesy of an upper level trough and cold front passing through the region. With temps above freezing before midnight and antecedent warm grounds, don't anticipate any impacts. Thursday night looks dry with high pressure in place.
Current model guidance has temperatures reaching into the lower to mid 70s that could break a 66 year high temperature record from 1951.
Tomorrow, after a bitterly cold start, strong warm air advection kicks in as a low pressure center develops over Alberta and southerly winds pick up. Any lingering pcpn associated with this low should end by mid to late Friday morning.
A warm front will lift from eastern Montana and into southern Saskatchewan and Manitoba tonight. BUFKIT sounding profiles initially are cold enough for light snow this afternoon, with chances for sleet/light freezing rain arriving just after 00z/6PM CST Thursday. A rapid warm up Friday followed by a couple of warm frontal and cold frontal passages with limited cooling. On Friday, despite a cold frontal passage during the day, highs will be in the 35F to 45F range with gusty winds mainly centered over north central ND.
316 AM EST Thu Feb 9 2017 A line of convection ahead of a cold front will exit east of the area early this morning. The most notable sensible weather for Thursday will be the windy post-frontal conditions ushering in a much cooler and drier airmass. A Wind Advisory will continue for these far north Georgia locations today given the high forecast wind gusts. Most locations will see low temperatures at or below freezing by Friday morning. RW High pressure at the surface has moved offshore by Friday night.
I have adjusted lows a few degrees cooler than models are outputting as feel models are not taking into account recent snowfall across north central and the northern Sandhills from last night. Across southwest Nebraska have kept temperatures in the teens as this area does not have snow covered ground and felt they would stay slightly warmer. The models have strengthened the thermal ridge Friday to near 20C at h850mb. high clouds and increasing moisture should lower the forecast to around 70 if not cooler. would suggest cooler readings like 50s or 60s for highs. A weak cold front will drop in Friday afternoon and between this and the possible high cloudiness. cooler highs are possible in this area also.
405 AM EST Thu Feb 9 2017 Low pressure will exit this morning bringing an end to steady snow. Warmer temperatures and rain chances return for the weekend. The digging upper trough, along with some lake enhancement in NW flow, should result in scattered-numerous snow showers redeveloping by later this morning and afternoon. The highest amounts are expected to be in the higher terrain of WV/MD where upslope flow and saturation in the snow growth region should result in a few more inches of accumulation. Building high pressure and backing flow should end any remaining snow showers this evening.
332 AM CST Thu Feb 9 2017 At 3 AM, a 1030 mb high pressure area was centered over Kansas City. The subsidence associated with this system and in the wake of a departing short wave trough (that brought mid clouds to the area during the evening) produced clear skies across the Upper Mississippi River Valley. A tight surface pressure gradient between the high pressure system and a low pressure area over eastern Lake Superior kept the wind speeds in the 10 to 15 mph range. For tonight, a warm front will move quickly northeast across the area.
An area of high pressure, currently over the region, will bring cold temperatures tonight with lows in the single digits below and low teens below zero. Upper level ridging coupled with an approaching front that will draw up warm southerly winds will result in well above normal to near record temperatures on Friday. Soundings continue to show a shallow inversion, so areas with the best mixing and/or sites at higher elevations will see the warmest readings in the 40s to possibly the lower 50s.
352 AM EST Thu Feb 9 2017 Snow will end from west to east into this evening as low pressure departs.
With low pressure exiting to the northeast, low-level moisture bails by 18z. Surface and 850 mb ridge quickly push east into Friday, with SW return flow setting up. 850 mb winds out of the WSW really crank up Friday afternoon and evening due to strengthening gradient between low pressure in southern Canada and high pressure over the Gulf of Mexico. Friday night looks fairly quiet with zonal flow aloft and a low pressure system getting organized in the Plains.
Behind the cold front that crossed the region late last night, a brisk northwest wind will help advect cooler, more seasonable air into the forecast area. Additionally, upslope flow combined with a bit of lingering moisture will help produce some light snow showers across the higher terrain this morning.
344 AM CST Thu Feb 9 2017 (Today and Tonight) Highs this afternoon under sunny skies will be 5 to 10 degrees warmer than seasonal norms with mid to upper 60s over the northern half of the CWA and lower 70s across the southern half. After near normal morning lows this morning in the 30s, warmer lows in the 40s can be expected tomorrow morning.
323 AM CST Thu Feb 9 2017 NW flow is currently in place across the Plains with a sharp trough over the Great Lakes and through the Ohio Valley. The cold front that swept through Tue night has pushed all the way down to the Gulf. As we head into Fri the upper pattern will flatten out which will allow lee troughing to strengthen. This will setup a strong warm advection pattern across the high Plains for Fri. Still confident in highs in at least the low 70s.
451 AM EST Thu Feb 9 2017 Today through Friday: Latest surface analysis shows a cold front draped along the Southeast CONUS from the Carolinas down towards southern Texas. Forecast highs are in the low to mid 80s, around 6 to 8 degrees above normal for this time of year. Both the GFS and ECMWF have been consistent with dropping the aforementioned cold front southward over the region tonight. On Friday, behind the frontal boundary, winds will shift to the north, advecting in a cooler and drier airmass. Max temps are may only reach the mid 70s, a couple degrees cooler than normal.
258 AM CST Thu Feb 9 2017 Upper level ridging will build into the the region today with northwesterly flow aloft continuing into tonight when the anticyclonically curved portion of ridge passes overhead.
The low temperatures tonight should rapidly fall after sunset with relatively clear skies and fresh snow cover most areas. Utilized the coldest guidance among models to initialize the minimum temperatures then tweaked the lows for anticipated cloud cover (southwest) which will be rather sparse tonight. Still expecting some mixed precipitation in the form of sleet, freezing rain and snow across the far west central and north in the afternoon and evening hours. Here there is a concern for winds as the h500 ridge moves east creating a strong h850 gradient of wind. So blended the SB winds with the highest guidance among models for Friday.
/issued 241 PM CST Wed Feb 8 2017/ Temperatures have warmed into the lower to middle 70s across much of the area this afternoon, some 15 to 20 degrees above normal for this time of year. The only factor limiting our high temperatures today will be a northerly wind shift later this afternoon, a precursor to an approaching backdoor cold front. The backdoor cold front is expected to make its way into the area later this afternoon and into the evening hours. No rain is expected with this cold front, with temperatures expected to fall into the 30s tonight.
Cold air advection accompanying the low stratus continues to steadily keep temperatures below freezing this afternoon across northeast Kansas. An upper trough passing over the Great Lakes Region towards Thursday morning will increase high clouds from northwest to southeast.
1130 PM CST Wed Feb 8 2017 The short wave trof currently centered in middle MO is moving east- southeast at a steady pace. Current indications are the short wave trof will be exiting the CWA at 00Z. We should see gradual northeastward clearing of the stratus this evening into the overnight hours, however some high clouds in the northwest flow aloft will be spreading into the area in the wake of the low clouds. Impressive cold air advection will bring rather chilly air into the region tonight as high pressure builds southeastward, with most locations seeing lows well into the teens. The combination of the cold high pressure system and clouds will result in a rather cold day, with highs on Thursday anywhere from 10-15 degrees below average.
A warm front will lift from eastern Montana and into southern Saskatchewan and Manitoba tonight. BUFKIT sounding profiles initially are cold enough for light snow this afternoon, with chances for sleet/light freezing rain arriving just after 00z/6PM CST Thursday. By 6AM CST Friday, temperatures will range from 27F in Rolla to the lower 40s in the southwest. A rapid warm up Friday followed by a couple of warm frontal and cold frontal passages with limited cooling. On Friday, despite a cold frontal passage during the day, highs will be in the 35F to 45F range with gusty winds mainly centered over north central ND.
Skies are mostly sunny across the Northern Plains with mid and high clouds beginning to spill over the ridge into western portions of the forecast area. At the surface, arctic high pressure center has shifted into eastern SD with light southerly return flow beginning across western areas. Higher elevations of Northeast Wyoming and the Black Hills will slowly drop into the teens, then level off or even rise a few degrees overnight as warmer air starts to move in aloft. Upper ridge will shift eastward over the region, and a warm front will push into the area from the southwest. However, the warmer temperatures will be short lived, as a cold front crosses the region Friday.
1248 AM EST Thu Feb 9 2017 A strong cold front will move through the region tonight. Cool and dry high pressure will build into the region Thursday into Friday.
1138 PM CST Wed Feb 8 2017 High pressure building across the region to maintain VFR conditions through the terminal forecast period. /issued 407 PM CST Wed Feb 8 2017/ A cold front continues to make progress south and east across the area and was located roughly from north of KTYR, to north of KTXK, to between KMEZ and KMWT. The leading edge of the northwest winds is actually due to a pre-frontal trough. Northwest flow will usher cold air back into the region tonight, and subfreezing temperatures are likely in SE OK/SW AR.
1214 AM EST Thu Feb 9 2017 Cold front has pushed east of the forecast area.
Tonight and Thursday Quiet weather is expected as the center of a large cold anticyclone passes southwest of the area.
The cold thermal trough over the area early this morning will slowly move off to the east today with a rapid return of a warmer airmass later tonight and Friday. All the models are dry with the warm advection with the lower 6-7kft of the atmosphere looking quite dry. High Milder air will return quickly Friday as high pressure departs.
Amounts will be light and the chances for measurable precip will be on the low side. Across that plateau area it looks as though freezing levels will drop down to around 2500 ft msl around 09z. Sfc temps across the Plateau wont likely get below freezing until around sunrise. Upper level dry nwly flow will persist along with building sfc ridging influences will provide for VFR/SKC conditions from generally 09/15Z-09/17Z onward with sustained nly winds diminishing.
Warm front pushing the region is bringing light to moderate rain and snow. Surface winds: Mainly S-SE 5-15 kts with gusts to 20 kts, except 15-25 kts with gusts to 40 kts over the higher terrain. Mountain areas will be favored, with rainfall totals of 1 to 3 inches tonight through Thursday night over the higher terrain of central Idaho and Baker County Oregon. Temperatures will be about 10 degrees warmer on Thursday, and stay above freezing in most areas tonight.
359 AM EST Thu Feb 9 2017 Today through Friday: Latest surface analysis shows a cold front draped along the Southeast CONUS from the Carolinas down towards southern Texas. Forecast highs are in the low to mid 80s, around 6 to 8 degrees above normal for this time of year. Both the GFS and ECMWF have been consistent with dropping the aforementioned cold front southward over the region tonight. On Friday, behind the frontal boundary, winds will shift to the north, advecting in a cooler and drier airmass. Max temps are may only reach the mid 70s, a couple degrees cooler than normal.
259 AM CST Thu Feb 9 2017 An upper lever ridge across the western US will shift east into plains late Tonight. Tonight, Southerly winds will keep overnight lows warmer as temperatures only drop into the lower to mid 30s.
1246 AM EST Thu Feb 9 2017 Low pressure will result in snow overnight before tapering to snow showers Thursday under a crossing disturbance.
1126 PM CST Wed Feb 8 2017 An upper level ridge currently over the Western U. temperatures should continue to fall through the overnight hours into the low to mid 30s for most areas. /ISSUED 256 PM CST Wed Feb 8 2017/ The cold front blew through North TX today with some gusty winds and cooler temperatures.
226 AM CST Thu Feb 9 2017 CAA continues across the mid state this morning in the wake of the cold front that moved through the area yesterday. Fortunately, it looks like this cold air will not last long as the upper trough moves off the east coast and upper ridging moves in quickly behind. However, overnight into Friday morning, winds will begin their turn towards the south and start WAA as the upper level ridge builds in.
Elsewhere, drier air associated with cold front should allow VFR to continue to prevail with these conditions spreading offshore late tonight. North winds behind the cold front will increase with stronger speeds and gusts at NEW, MSY & GPT during the morning. Ridge will build over the Baja and Western Mexico with the ridge axis extending north through the 4 corners and along the west side of the Rockies. At the same time L/W trough will deepen over the east coast. This will provide more than enough forcing to get a good cold front through overnight tonight. By this weekend though look for temperatures to moderate and moisture to begin to return as the high pushes off the coast and into the Atlantic.
Be sure to bundle up in the morning as we expect wind chills to be in the low to mid 20s which is a HUGE change from the last few days. Daytime highs will likely be in the low to mid 40s with some lingering cloud cover especially over northeast Alabama and southern middle Tennessee during the morning.
849 PM PST Wed Feb 8 2017 High pressure aloft will continue warm weather through Thursday.
232 AM MST Thu Feb 9 2017 Broad upper ridge is building over the western CONUS, with a 150-kt jet moving over the northern plains. Upper ridge will shift over the central states today, and a warm front will push into the CWA. The upper ridge will flatten tonight as a weak wave moves across the Canadian border. Friday is still expected to be mild; however it may be another tricky temperature forecast with the cold front moving in during the day.
/issued 823 PM CST Wed Feb 8 2017/ The cold front has now cleared the CWA with gusty north winds observed across all of the Mid-South. The marginally severe convection along the cold front has moved off to the east with dry conditions anticipated for the remainder of the night. /issued 317 PM CST Wed Feb 8 2017/ Windy and colder conditions will arrive to the Midsouth this evening, behind a strong cold front passage. upper level trof lifts out to the Atlantic and upper level ridging builds over the plain.
1224 AM EST Thu Feb 9 2017 Low pressure will result in snow overnight before tapering to snow showers Thursday under a crossing disturbance.
Afterwards, the pressure gradient will slacken as high pressure moves in and skies will be generally clear through the period. Winds will shift from the NW to more of a S to SW direction as the period progresses as the high moves east. Pressure gradient continues to slowly slacken across the area in the cold front that finally has pushed through the state. The weak cold front continues to make progress slowly moving south over AR, and was from TXK to south of LIT to east around. Clouds had cleared, and behind the front, drier and cooler air, and a northwest to northeast surface wind flow was noted. Aloft, the upper low pressure through continues to push east taking the storm system with it.
440 AM EST Thu Feb 9 2017 High pressure will move from the midwest this morning into the Ohio Valley this evening.
Snow showers with lake enhancement are likely to linger over the Alleghenies into the evening in association with strong CAA and passage of upper trough axis. Warmer air advects in from the Ohio Valley for the weekend, with highs on Sat/Sun about 15-20F milder than Fri.
307 AM EST Thu Feb 9 2017 Current conditions across the area feature northwest flow across eastern Kentucky with colder air filtering into the area behind an exited cold front. Also, even at 08z, temps are only just now reaching freezing for accumulation. This will also lead to a ridge to valley temperature split tonight with some of the valleys dropping into the lower teens.
High pressure will gradually build in later Thursday and move off to the east on Friday. Low pressure will track into the region over the weekend.
309 AM CST Thu Feb 9 2017 Unseasonably cold conditions expected across central and southeast Illinois today as a sprawling/chilly area of high pressure builds southeast into the area. However, the high is expected to be very progressive, with southerly return flow developing on its back side for tonight. The presence of this high and associated dry airmass will keep quiet weather going through the period. While surface temperatures will be significantly warmer than today -- reaching the 50s across areas from about Rushville southeast to Lawrenceville -- the northern CWA will be tempered by the 3-4 inches of snow cover that will start melting.
350 AM CST Thu Feb 9 2017 After a cold start to the morning with temperatures in the 30s and lower 40s, a warming trend will begin today as upper level high pressure builds in from the west.
Upper ridge axis will be over the forecast area on Friday, resulting in dry conditions and potentially record breaking high temperatures. Some statistical guidance suggests temperatures in the lower to middle 80s, which would be near all-time records for the month of February, most of which were set last year.
304 AM CST Thu Feb 9 2017 Water vapor imagery this morning was showing a well amplified upstream ridge situated over the western CONUS with hefty moisture spilling over the top through the Pacific northwest. strong high pressure was in control across the central Plains. aforementioned Pacific moisture riding down the front end the ridge will likely keep skies mostly cloudy.
148 AM EST Thu Feb 9 2017 A strong cold front will move through the region tonight. Cool and dry high pressure will build into the region Thursday into Friday.
320 PM EDT SUN AUG 21 2016 An upper level trough and attendant cold front will progress east through the Mid-Atlantic and Carolinas this evening into tonight. In the wake of the front, dry high pressure will build into the region from the west through mid-week. An upper level trough progressing east through the Great Lakes today and into New England tonight will push a seasonably strong cold front across the area late this evening and overnight. Westerly flow aloft preceding the front and late unfavorable diurnal timing will limit convective pops/coverage across the area with the the highest pops expected over the NW Piedmont and northern Piedmont during the 21z-01z, with rapid weakening thereafter owing to boundary layer cooling/stabilization. Expect convection to end from west-east between 03 to 06z as the surface front /low-level trough/ progress toward the Carolina coast.
317 PM CDT SUN AUG 21 2016 Models are advertising a rather progressive pattern over the next several days with ern conus trof quickly shifting east while upstream Pac NW trof pushes inland by mid-week and treks along the U. This wave will be responsible for dragging the next cold front into the central plains.
237 PM EDT SUN AUG 21 2016 Cloud lines are attempting to form near the larger islands along the Lower Keys this afternoon. The culprit for the light winds and sunny skies is high pressure parked over the Keys area and south Florida.
111 PM MDT SUN AUG 21 2016 Upper ridge axis will cross the local area tonight resulting in dry conditions. Clouds will dissipate after sunset with loss of surface heating but with winds forecast to stay breezy from the south through the night temperatures will struggle to fall below the lower to middle 60s. Upper ridge will move east on Monday with southwesterly flow by the afternoon.