Aikyam-Lab/Synoptic-Bench huggingface dataset:
441 PM MDT Fri Sep 1 2017 A weak trough continues to weaken and slide south and east of the central Rockies this Friday afternoon. Southwestern Colorado still appears to be holding on to a bit more moisture along and behind the decaying trough per SPC Mesoanalysis and a few showers have formed along the Continental Divide, aided by slightly stronger westerly flow aloft. Dry air will continue to move southward as high pressure builds in from the west.
1231 PM CDT Fri Sep 1 2017 Low pressure currently located over central Tennessee will move northeast the rest of the day. Ample insolation and the 850mb thermal ridge building into the area, expect temps to be more seasonable. Temps on Mon will actually be above seasonal average, expected to reach the low 90s in places just ahead of a cdfnt.
1245 PM CDT Fri Sep 1 2017 High pressure will continue over Arkansas for much of the period. A weak cold front will move into northeast Arkansas tonight and move southwest through the state Saturday morning. These clouds will also allow temps to be a deg or two cooler on Sat compared to what is expected this Fri afternoon.
230 PM CDT Fri Sep 1 2017 Main forecast concerns in the short-term are on chances for rain showers late tonight through Saturday morning then focuses turns to the low chances for thunderstorms Saturday afternoon. How widespread any showers would be on the leading edge of the moisture transport is in question since the lower levels of the atmosphere are fairly dry. Afternoon MUCAPE values look to increase into the 500 to 1000 J/kg range ahead of the cold front. At this time confidence was high enough to add a slight chance of thunderstorms late Saturday afternoon across Clark and Taylor Counties, closer to the stronger forcing from the trough.
To the southeast of the low pressure center, southerly flow continues to bring deep layer moisture into our area with PWAT values near 2". Slightly warmer highs (mainly upper 80s) are possible across eastern locations, where more breaks in the clouds are expected through late morning.
158 PM EDT Fri Sep 1 2017 Aviation/Hydro A large Canadian Polar high pressure system is moving over Michigan today and will be east of this area by Saturday. Another Canadian Cold Front will bring the risk of showers and thunderstorms on Labor Day. The southerly flow ahead of the cold front will bring a surge of warm air allowing highs to reach the lower to mid 80s. Behind the front expect much cooler weather for mid week.
A strong upper-level high pressure system combined with smoke from distant wildfires will provide hazy sunshine and hot conditions over the Great Basin this Labor Day weekend.
Strong upper level high pressure system over the west has continued to provide abnormally high temperatures for this time of year.
317 PM CDT Fri Sep 1 2017 High pressure remains over the area, represented by clear skies and low dewpoints which are in the 40s.
309 PM EDT Fri Sep 1 2017 High pressure will cross the region Saturday.
426 PM EDT Mon May 1 2017 Strong low pressure over the nations midsection will lift out across the Great Lakes tonight and Tuesday.
415 PM EDT Mon May 1 2017 A cold front will move through the area this afternoon and evening with thunderstorms and showers.
As this system moves to the northeast, influences of an upper level low will result in sct light shwrs thru Fri, with lingering iso/sct shwrs Fri night across eastern portions, as this upper low eventually moves northeastward also. Both highs and lows will remain several degrees below seasonal normal values Thu into Fri, with highs only in the low to mid 60s on Thu.
521 PM EDT Mon May 1 2017 A cold front will cross the region this evening bringing showers and thunderstorms to the area. Cooler high pressure will build in behind the front tonight through midweek.
/BB/ 12 UTC JAN sounding shows 40 to 50 kt westerly winds at 2 to 4 kft above the surface in the wake of the cold front which came through last night.
The cold front currently resides west of Albany southwestward to near Apalachicola. Cooler and drier air is on tap for the overnight hours with lows falling into the 50s across most of the area; mid 60s across the FL Big Bend where clouds and precipitation chances will possibly hang around most of the night.
For 00z Aviation discussion below Large low pressure system is stacked and centered over Wisconsin this afternoon. Obviously our weather for the next 24 hours will be dictated by this cyclone. It will continue on its northeastern course through tomorrow, with conditions slowly showing signs of improvement as the low pushes farther away. As is usual with snow showers with above freezing surface temps and the p-type is highly dependent on adiabatic forcing in the stronger showers. In the big picture, we'll see the upper trough over the center of the country slowly shift east as ridging works in from the west. Toward the end of the forecast that ridge flattens and the flow looks to become split with cutoff upper lows over the southwest and northeast parts of the country.
257 PM CDT Mon May 1 2017 A large upper level low pressure system over Wisconsin this afternoon will continue to lift northeast across the Great Lakes tonight. Upper level heights will build on Tuesday as high pressure spreads into the region. Dry weather along with much warmer temperatures are expected with highs reaching into the middle and upper 70s.
A cold front will begin moving into northern sections of the forecast area later Tuesday, then push through the remainder of the region Tuesday evening and night.
321 PM CDT Mon May 1 2017 A large upper level low pressure system over Wisconsin this afternoon will continue to lift northeast across the Great Lakes tonight. Upper level heights will build on Tuesday as high pressure spreads into the region. Dry weather along with much warmer temperatures are expected with highs reaching into the middle and upper 70s.
323 PM MDT Mon May 1 2017 Weak upper wave crossing the area today producing some mid-level clouds and perhaps a few sprinkles/flurries over the higher peaks, though have yet to see precip appear in any mountain obs/web cams. On Tuesday, stronger upper level trough approaches the area, and dynamic lift will increase across the state in the afternoon. 700 mb temps well above 0C suggest snow levels will stay very high, with minor accums limited to the higher peaks.
1228 PM CDT Mon May 1 2017 An unseasonably strong low pressure system, centered over northwestern Missouri early this morning, will lift northeastward to the Upper Mississippi Valley and western Great Lakes Region by early this evening. Regional mosaic radars early this morning show bands of light to moderate precipitation circulating southward on the backside of the upper low into portions of north-central/northeast Kansas.
301 PM CDT Mon May 1 2017 Deep 993 mb low with upper level closed low vertically stacked in SW Wisconsin will continue to move ENE over the upcoming day. The cold pool combined with upper level disturbances wrapping cyclonically around the upper low will keep scattered showers around the area until near midnight along/north of I-74, while isolated to scattered showers extend southward through much of the area for late afternoon/early evening. Cooler temperatures and frost should be absent due to the persistent pressure gradient keeping breezy WSW winds 10-20 mph through the night.
620 PM EDT Mon May 1 2017 Strong low pressure over the nations midsection will lift out across the Great Lakes tonight and Tuesday.
Short Term (Tonight through Tuesday night): Zonal flow will prevail across south Texas tonight before a 500mb trough across northwest Mexico moves eastward Tuesday. Low to mid level moisture will increase across the coastal sections of the CWA Tuesday and this will provide isolated seabreeze convection across the lower TX coast Tues afternoon.
/Issued 355 AM CDT Mon May 1 2017/ Pleasant weather expected today across the Texas and Oklahoma Panhandles as yesterday's powerful low pressure system continues to lift northeast, well away from the southern plains.
High pressure will drift build north from the Gulf into MS/AL/GA overnight. Some of our eastern valleys may see lows in the lower 40s by morning, while most elsewhere will be in the upper 40s.
233 PM EDT Mon May 1 2017 A strong cold front crosses today. Upper low with unsettled and much cooler weather to end the work week. Cooler, but overall drier weather to start the short term period, with high pressure briefly in control.
1225 PM CDT Mon May 1 2017 Our May 1st snowstorm continues this morning, with an impressive presentation on water vapor this morning showing moisture from the trowal rotation entirely around the upper low. Trowal axis will continue to pivot to a north to south orientation through the daybreak hours, and it may not be until late morning for precipitation to gradually wind down as the upper low pivots into eastern Iowa and dry air undercuts the system. This could leave temperatures west of the James River valley significantly warmer than areas east.
326 PM CDT Mon May 1 2017 This afternoon, an intense cyclone is centered over Southern WI. The vicious NE-lifting cyclone has placed the Great Plains under a strong NW regime. Tonight & Tue: All remains quiet across the KS Neighborhood as NW flow becomes Wly tonight then shifts back toward the NW on Tue as weak high pressure spreads E across the Plains. Thu-Next Mon: All will be quiet across the neighborhood as an ultra-high amplitude ridge moves slowly E from the Rockies to the Great Plains.
315 PM EDT Mon May 1 2017 The cold front has just gone through metro ATL and will continue to track eastward through the remainder of the afternoon. Expect lows in the low/mid 50s, apart from the mid/upper 40s in the mountains. mid 70s to low 80s; cooler air across the higher terrain.
304 PM CDT Mon May 1 2017 Upper level low pressure continues to pivot to the northeast into the southern Great Lakes this afternoon. Winds have also remained brisk out of the west behind this departing low pressure system.
358 PM EDT Mon May 1 2017 A large low pressure system passing north of the region will result in cool and breezy conditions through Tuesday.
246 PM CDT Mon May 1 2017 Departing upper-level low will take the cooler and wetter weather with it, with improving conditions on their way.
137 PM PDT Mon May 1 2017 Low clouds, fog and cooler temperatures are expected for parts of the Los Angeles coast overnight.
cooler and drier air will cause skies to slowly clear.
126 PM EDT Mon May 1 2017 An upper level low pressure system continues to push toward the region with cool temps, cloudy skies and scatered rain showers that continue into a portion of Tuesday. Clearing and cooler temperatures are expected behind the low pressure system with lows dipping into the upper 30s Tuesday night.
Winds will shift to the west and northwest at 8 to 10 knots from KSRQ north after 14Z on Tuesday as a cold front sinks south into the region with southwest to west winds around 10 knots expected across the southwest terminals.
316 PM CDT Mon May 1 2017 Low cloud slowly clearing across northeast Kansas today with upper low nearing the Great Lakes. West-northwest winds close to Advisory levels at times, but the continued exit of the large cyclone should allow speeds to diminish.
1218 PM CDT Mon May 1 2017 Circulation around upper level low that is exiting northern MO into the Great Lakes to dominate forecast today. Return to more seasonable warmer conditions will then be swift on Tuesday as upper level flow returns zonal.
Winds will be somewhat VRBL this aftn less than 10 KT shifting more southerly by Tuesday morning as the high center moves east. /issued 1057 AM CDT Mon May 1 2017/ Mid-morning sfc analysis shows high pressure centered nearly overhead. A deep cyclone and yesterdays active weather maker for the area was positioned over northern Missouri early this morning. Sharply drier and somewhat and cooler air has settled into the area south of this feature and behind an associated cold front now stretching along the Appalachians and through the central Gulf of Mexico.
132 PM CDT Mon May 1 2017 In the upper levels the region will remain on east side of upper ridge centered over CA.
MVFR CIGs will clear out as a cold front moves through this afternoon and evening.
1237 PM CDT Mon May 1 2017 As of this morning, upper level low pressure was centered over northwest Missouri, with widespread cloudiness associated with the ample moisture around the stacked low. Scattered showers will continue to rotate around the low this morning, but with primary focus for ascent on the northern periphery of the low and the progressive nature of the system to the northeast, precipitation chances should terminate by noon. A strong pressure gradient on the backside of the low will result in breezy northwest winds today, with peak wind gusts near 30 mph occurring during the late morning and early afternoon. High pressure will briefly move into the area late tonight into Tuesday in advance of the next upper wave.
Synoptic Setup: long range begins with a large trough over the Great plain and Mississippi Valley and a ridge over the western third of the CONUS and Canada. Northeast Montana lies under a northwest to almost northern flow pattern with the ridge coming in fast. Farther west a large trough is developing off the coast of British Columbia.
Much cooler weather returns for the weekend with scattered showers possible. High pressure over the eastern Pacific continues to provide sunny skies and above normal temperatures. The ridge will build inland through midweek with further warming.
317 PM EDT Mon May 1 2017 Currently - High pressure over the North Atlantic is having its western ridge squeezed southwards towards the Florida Keys as a large low moves into the eastern united states. Forecast - Winds will continue to slacken over the next 24 hours becoming near light and variable on Tuesday as the nearby ridge axis retreats eastwards leaving a flat pressure pattern in the area. Through mid week, ridging will regain some footing in the Keys as the previously mentioned low lifts far out to the northeast. Rain chances will be slim to none as lower level ridging should keep a sufficient cap across the area to prevent much in the way of shower development.
231 PM CDT Mon May 1 2017 Departing low pressure will bring very gradually clearing skies this evening, and perhaps a quick uptick in wind gusts before decreasing diurnally around sunset. This low will be a bit faster to eject eastward but then will deepen and wrap into a cut-off low during the latter half of the work week, potentially providing another round of significant rainfall.
A weak cold front will move through the DHT and GUY TAF sites early Tuesday morning turning the winds more to the east. A cold front will begin moving into northern sections of the forecast area later Tuesday, then push through the remainder of the region Tuesday evening and night.
204 PM EDT Mon May 1 2017 A cold front will cross the region this evening bringing showers and thunderstorms to the area. Cooler high pressure will build in behind the front tonight through midweek.
Drier and cooler air will filter in behind the cold front that is exiting the area. The low level jet causing gusty winds over the area will move to the NE after sunset. High pressure.
1232 PM CDT Mon May 1 2017 The latest trends support a little warmer temperatures in the west today, so have updated grids based on this idea. Longwave ridge over western North America will shift over the Dakotas by the end of the period. Longwave trough over the central Pacific remains through the period. Another upper level trough develops over the West Coast by the end of the period.
438 PM EDT Mon May 1 2017 Cooler air will spill in tonight behind the strong cold front. Showers will dominate hereafter, although a convective segement will affect the ridge areas late this aftn. Some scattered showers will redevelop later with an approaching upper trough.
However, temps are climbing and snow levels will be rising, with freezing levels last evening running around the 10k mark already.
Strong high pressure aloft over the eastern Pacific will expand eastward into the desert southwest through the week.
A few showers will probably linger overnight into Tue morning as low pressure slowly pulls away to the east. Dry weather is expected by Tuesday afternoon as high pressure builds in from the west.
220 PM PDT Mon May 1 2017 High pressure will bring warming temperatures and increased snowmelt flows to rivers this week.
At mid morning, a cold front was moving across the Plateau with scattered showers. A large low pressure system was located over the Mid Ms Valley, spinning some clouds into our northwest counties and creating gusty winds across the region. At the same time, the low pressure system will be moving northeastward, toward the Great Lakes. Clouds that are wrapping around the low pressure system will push into our area, resulting in mostly cloudy skies across the northwest quarter of Mid TN. A low pressure system moving from the Mid Ms Valley to the Great Lakes will produce gusty SSW winds today, generally 15G30KT. Winds will diminish to 10KT or less this evening as the low moves away.
148 PM EDT Mon May 1 2017 Cooler air will spill in tonight behind the strong cold front. Some scattered showers will redevelop later with an approaching upper trough.
/ISSUED 934 AM CDT Mon May 1 2017/ Surface observations show that we got just a little bit chillier than forecast overnight, but also that temperatures have rebounded very quickly after sunrise, and so the forecast of temperatures in the lower to middle 80s under sunny skies looks on track. /ISSUED 317 AM CDT Mon May 1 2017/ Weak high pressure just off the Texas coast will continue to drift slowly east today. The high will bring sunny skies today. A return of low level moisture should keep min temps tonight a bit warmer.
347 PM EDT Mon May 1 2017 An upper level low pressure system continues to push toward the region with cool temps, cloudy skies and scattered rain showers that continue into a portion of Tuesday. Clearing and cooler temperatures are expected behind the low pressure system with lows dipping into the upper 30s Tuesday night.
415 PM CDT Mon May 1 2017 Mostly clear skies and breezy westerly winds were common across Eastern Oklahoma and Northwest Arkansas this afternoon as the backside of the upper level low lifted northeast into the Great Lakes Region.
High pressure will gradually move over the region during the upcoming week bringing a significant warming trend to the area. Over the weekend the next storm will usher in cooler temperatures.
A weak cold front over central Utah will move through southern Utah today. Strong high pressure will build over the region for the latter half of the week.
332 PM CDT Mon May 1 2017 H5 analysis from earlier this morning had a closed low over eastern Iowa with a trough of low pressure extending south into northern portions of the Gulf of Mexico. High pressures and ridging were noted over the eastern Pacific and Western Atlantic. Temperatures in the vicinity of this snow cover have struggled to reach the lower 50s this afternoon. West of the band, readings were in the lower to middle 60s. Highs will generally be in the lower 60s across the area.
335 PM CDT Mon May 1 2017 Mid-afternoon sfc analysis shows high pressure centered over lower Acadiana at the moment, providing a light and variable low-level flow over the forecast area. As a result, mins tonight look to run several degrees warmer, especially across the wrn 1/3 of the forecast area. Rain chances return to the area Tuesday night as a trof digging through the Rockies pushes ewd to the srn Plains.
As this system moves to the northeast, influences of an upper level low will result in sct light shwrs thru Fri, with lingering iso/sct shwrs Fri night across eastern portions, as this upper low eventually moves northeastward also. Both highs and lows will remain several degrees below seasonal normal values Thu into Fri, with highs only in the low to mid 60s on Thu. A low pressure system moving from the Mid Ms Valley to the Great Lakes will produce gusty SSW winds today, generally 15G30KT. Winds will diminish to 10KT or less this evening as the low moves away.
300 PM CDT Mon May 1 2017 Large low pressure system is stacked and centered over Wisconsin this afternoon. Obviously our weather for the next 24 hours will be dictated by this cyclone. It will continue on its northeastern course through tomorrow, with conditions slowly showing signs of improvement as the low pushes farther away. As is usual with snow showers with above freezing surface temps and the p-type is highly dependent on adiabatic forcing in the stronger showers. In the big picture, we'll see the upper trough over the center of the country slowly shift east as ridging works in from the west. Toward the end of the forecast that ridge flattens and the flow looks to become split with cutoff upper lows over the southwest and northeast parts of the country.
VFR conditions are prevailing early this afternoon as showers and storms have ended following the passage of a cold front.
Cooler weather with showers possible towards the end of the week into the weekend.
215 PM MST Mon May 1 2017 Dry conditions, mostly clear skies, and generally light winds will develop throughout the week as high pressure builds over the Southwest.
LWA will remain in effect across ne portions of cwa, where base of upper trough yielding winds around 15 mph attm, and higher gusts expected with daytime heating in dry air.
918 PM PDT Fri Apr 13 2018 Santa Ana winds relaxing and warmer conditions develop on Saturday.
At this time it appears the higher probabilities for severe weather will be across the western portion of the forecast area particularly far northeast KS and northwest MO. at least that is what many of the high-res models are depicting. All the activity should dissipate late this evening with the passage of a strong cold front.
Deterministic NAM/RAP predict the cold front to move across the CWA overnight then offshore. ) Much cooler, given considering 100-500mb thickness values per GFS deterministic.
1214 AM EDT Sat Apr 14 2018 Rain chances will increase over the weekend with the approach of a cold front. No changes were made to the overnight forecast as Eastern CONUS ridging should maintain dry weather, while temperature stays about 20 degrees above average with the region in the vast warm sector under the ridge. The models remain in general agreement that deep cutoff low pressure will emerge from the midwest and dig over the Upper Ohio Region for the start of the new week.
The upper low responsible for the accumulating snow across parts of our forecast area continues to move east into the central plains.
The upper low is currently over the central Plains, and remains very strong. It looks to intensify slightly overnight, and remain a closed low for the duration of its impacts on the mid state. 5 inches across the area, and with the upper low/cold front approaching, the LLJ will increase in speed to 60 knots over the area.
Freezing temperatures late tonight and Saturday morning for the coldest eastern and southern valleys.
757 PM EDT Fri Apr 13 2018 High pressure Saturday, with showers across the Ohio Valley by Saturday afternoon ahead of cold front.
610 PM CDT Fri Apr 13 2018 Warm front has drifted about 10 miles north of the far northern CWA border early this afternoon, roughly aligned just south of I-80.
Latest models move a warm front and light pcpn across our CWA Saturday.
The cirrus and a steady southerly flow within the circulation between the deep Midwest low and the Western Atlantic ridge should keep temperatures relatively mild for mid April overnight. Lows will range from the lower 50s across Southwest Virginia and Northeast Tennessee to the middle and upper 50s across much of the rest of the forecast area.
811 PM EDT Fri Apr 13 2018 High pressure will continue to ridge across the area through Saturday with conditions remaining dry through then.