Aikyam-Lab/Synoptic-Bench huggingface dataset:
636 PM CDT Fri Apr 21 2017 High pressure across the Northern Plains will build into Wrn and Ncntl Neb tonight followed by Pacific high pressure Saturday. The guidance came in with subfreezing lows tonight in the Platte valley and elsewhere. Generally clear skies are expected Saturday with high pressure moving overhead.
722 PM EDT Fri Apr 21 2017 Cold front sags south through this afternoon then lifts back north late Friday night/Saturday.
515 PM MDT Fri Apr 21 2017 A a ridge building over the Great Basin tonight, cool air will continue filtering into western CO and eastern UT. The storm that affected the area yesterday and last night is now affecting predominantly eastern CO, but scattered snow showers over the higher mountains of the Continental Divide will continue until early Saturday morning. These should have only brief impacts on traveling and mostly due to locally decreased visibility in snow showers over the highest passes. Cool dry northwesterly flow will persist over the forecast area on Saturday night as a ridge of high pressure slides east over the intermountain west. As the ridge builds over the CWA a brief warming trend will develop.
This is in response to a low pressure system over the epac. A dry high pressure ridge remains in place over wa/or tonight but will slowly move east allowing the clouds to increase tomorrow with some showers possible.
838 PM MDT Fri Apr 21 2017 Diffluent flow aloft with isentropic ascent at the lower levels continues to produce precipitation across most of the central zones this evening. Saturday afternoon looks very pleasant with ridging aloft and temperatures around 60 degrees.
912 PM EDT Fri Apr 21 2017 Low pressure tracking south of our area will spread some rain northward into our area this weekend, mainly to areas along and south of I-70. Low pressure in conjunction with a crossing northern stream upper trough is likely to generate rain south of the I 70 corridor on Saturday, then funnel moisture across I 68 through the weekend as it digs over the Southeast Conus.
857 PM EDT Fri Apr 21 2017 A cold front push southeast across the region tonight. The front will stall to the south Saturday and low pressure will develop along the boundary. The cold front appears to be near the Blue Ridge at this hour. The front stalls in the Carolinas Saturday as a slow moving wave of low pressure moves eastward along it. High pressure nosing in from the north may produce a dry period Saturday especially in Maryland, but chance of rain extends through the day, with greater risk as one heads further south and west. By Saturday night, rain looks likely as the low approaches and some decent FGEN develops over our region.
1139 PM CDT Fri Apr 21 2017 A trough is situated from Hudson Bay and stretching southwest to the Plains. This trough will move southeast tonight into Saturday. The next round on the wrap around from the low is beginning to move in and will continue to so this evening into overnight. 5 inches with the higher values possible in southeast Kansas.
951 PM MDT Fri Apr 21 2017 Evening water vapor loop showed a mid/upper level low circulation located over central Wyoming. Additional snowfall amounts should be light but given rather cold temperatures overnight and the potential for freezing of water and additional snowfall between Cheyenne and Laramie have opted to post a winter wx advy for that area into Saturday morning. The weekend will see warming temperatures with any lingering pcpn ending Saturday morning and upper ridging nosing into the region.
Winds will increase tomorrow as a ridge axis moves east of the area and a strong trough moves onshore in the PacNW.
High pressure building off the coast will bring a warming and drying trend to the district through today. Low clouds will become mostly focused along the immediate coast with W-NW winds ushering the low clouds inland especially during Saturday afternoon into the evening.
SE breezes return mid-morning on Saturday, but should weaken by mid-afternoon and back somewhat as the pressure gradient decreases ahead of an approaching cold front. At this time, model solutions are consistent in keeping the cold front north of the RGV airports through 23/00Z. /issued 245 PM CDT Fri Apr 21 2017/ SHORT TERM (Tonight through Saturday Night): The most significant event in the short term portion of the forecast will be the passage of a weak cold front through Deep South Texas and the Rio Grande Valley early Saturday evening through early Saturday night.
627 PM CDT Fri Apr 21 2017 Low CIGS will move back into the terminals this evening behind a strong cold front that has already moved through. Strong CAA in the wake of the front will cause temperatures to tumble into the lower to middle 40s for much of the area, with upper 30s expected over the northwestern zones.
/issued 710 PM CDT Fri Apr 21 2017/ For the 22/00Z terminal forecast will prevail VFR flight categories until around 2204Z-2209Z when lowering clouds ahead of an approaching cold front with a band of showers and thunderstorms. The cold front will continue to push across the Four State Region with the convection shining Southeast with it.
By Saturday afternoon, the ridge begins to weaken as a weak cold front begins to approach the southeast states from the west. Nighttime lows in the lower 60s interior zones and mid/upper 60s coastal zones. Highs on Saturday in the lower 80s at the coast and in the middle 80s inland.
A weather disturbance continues exiting to the east, as a high pressure ridge builds-in from the west. Lift and convergence within this low is keeping areas of generally light rain/snow going across part of the area at this time. In its wake, high pressure will build in at the surface with decreasing winds.
648 PM CDT Fri Apr 21 2017 /00Z TAFS/ Some of the latest hi-res models suggest that a few thunderstorms will develop along a southward moving cold front east of Callahan County 7-8 PM, into Brown County 9-10 PM. The cold front, currently moving through the Abilene area at 640 PM, will push south and reach KSJT by 04Z and the Interstate 10 corridor by 08Z. /issued 352 PM CDT Fri Apr 21 2017/ (Tonight and Saturday) Unseasonably cool temperatures can be expected across West Central Texas on Saturday, behind a strong cold front that will move across the area this evening and overnight. Saturday will be dry and much cooler behind the front, with breezy north winds continuing.
Gusty northerly winds will continue through the daytime behind a cold front that moved through earlier today. Strong CAA in the wake of the front will cause temperatures to tumble into the lower to middle 40s for much of the area, with upper 30s expected over the northwestern zones.
1018 AM EST Thu Jan 18 2018 Low pressure, well off the Mid Atlantic coast late this morning, will track east northeast farther out to sea this afternoon while high pressure builds in from the west.
644 AM EST Thu Jan 18 2018 High pressure over the Lower Mississippi Valley will move east across the Gulf Coast states today through Friday.
516 AM EST Thu Jan 18 2018 High pressure will build across the region today and Friday.
449 AM MST Thu Jan 18 2018 Ridge axis moving into the Rockies today with warm advection continuing. Some high clouds are thinning as they move over the ridge axis. Temperatures will be 5 to 10 degrees warmer today, then the thickening clouds and slightly enhanced drainage winds will keep the temperatures milder overnight tonight. FRIDAY'S WARMTH WILL BE REPLACED BY A WINTER STORM SYSTEM WITH Friday will be dry and unseasonably warm as the upper ridge shifts east. Locations farther north including Fort Collins and Greeley will still have to fight a bit of the inversion and any clouds there will keep temperatures several degrees cooler.
Most overnight lows will sink to the lower to middle teens by daybreak.
712 AM EST Thu Jan 18 2018 A weak ridge of high pressure will bring quiet and seasonable weather to the area today. A warm front will lift north across the area late tonight and early Friday with clouds and a few mountain snow showers. Weak ridging will take center stage today. with lingering clouds and scattered flurries confined to the higher terrain in upslope flow. We'll see a band of warm air advection clouds overnight with this feature and perhaps a few snow showers across the higher terrain.
913 AM EST Thu Jan 18 2018 High pressure centered south of the region will extend up the western side of the Appalachians through the end of the week. Weak low level CAA across the area this morning will transition to more neutral through this afternoon as the low level flow begins to back. Ridge of high pressure will extend from the Gulf Coast into the upper Ohio Valley through the period. However, still believe guidance is slightly too aggressive with warmer temperatures.
416 AM PST Thu Jan 18 2018 The cold front can be seen on radar drapped across our CWA and it is bringing a mix of rain and snow.
628 AM EST Thu Jan 18 2018 Northerly winds behind the cold front passage will be breezy around 10-12 knots with some occasional higher gust. /issued 436 AM EST Thu Jan 18 2018/ Latest water vapor imagery loop displays the cyclonic spin of a low pressure system centered over North Carolina. WPC analysis indicates a cold front draping south and southwestward from this feature, extending across the southern tip of the Florida peninsula. Mostly clear skies, dry conditions, and a cold airmass will help to lower minimum temperatures near Lake Okeechobee to the lower 30s.
As the upper ridge drifts east and flattens over the region through Friday, significantly warmer air will overspread the central plains with west to southwest flow at the surface. Parts of the area with deeper snow cover will see a lag in the return of warmer temperatures today but nonetheless, still climb above freezing with even greater warming on Friday as temperatures climb into the 40s and 50s across the area.
1037 AM EST Thu Jan 18 2018 High pressure over the Lower Mississippi Valley will move east across the Gulf Coast states today through Friday.
Question is, will temps drop to freezing by later this morning. Kept the mention of freezing rain/sleet for later this morning, however, may do an update later this morning to remove the mention of frozen precip and Freeze Warning if temps do not budge and this morning's sounding shows a warmer environment aloft than forecasted. Otherwise, still looks like -RA chances will be on the increase from south to north this afternoon and tonight as a coastal trough continues to develop and an upper level long wave trough approaches from the west and combines with increasing moisture.
411 AM CST Thu Jan 18 2018 Upper low over southwest Texas this morning will track east today and tonight.
623 AM EST Thu Jan 18 2018 High pressure centered south of the region will extend up the western side of the Appalachians through the end of the week. Continued to forecast temperatures on the cooler side of guidance. Ridge of high pressure will extend from the Gulf Coast into the upper Ohio Valley through the period. However, still believe guidance is slightly too aggressive with warmer temperatures.
Large waves generated by a deep low pressure offshore will impact the Washington coast today.
239 AM PST Thu Jan 18 2018 Expect another fair and mild winter day today, ahead of a fast- moving trough to kick off the weekend.
The high pressure will continue to build southeastward later this afternoon resulting in clear skies for the entire region. Winds and seas are starting to subside behind a cold front.
602 AM EST Thu Jan 18 2018 Deep low pressure just off the coast today will lift quickly northeast. High pressure will build in from the west today through the weekend.
/issued 308 AM CST Thu Jan 18 2018/ Another cold night across the Midsouth with skies clear under high pressure. bringing warmer air into northeast Arkansas this hour. Walnut Ridge is showing 8kts and a balmy 17F. The Midsouth being just to the north will see southwest winds of generally 5 to 15 mph and the start of warmer boundary layer air surging out of Texas. Temperatures will reach close to freezing today.
604 AM EST Thu Jan 18 2018 High pressure will build across the region today and Friday.
757 AM EST Thu Jan 18 2018 A large are of high pressure centered over the Lower Mississippi Valley will ridge northeast across the Ohio River Valley and into the Mid Atlantic states today.
/BB/ Today and tonight: Modifying Arctic high pressure in the atmospheric low levels is sitting right atop the Lower Mississippi Valley early this morning and promoting light winds and associated good radiational cooling conditions given clear skies. Full sun and light winds will yield decent mixing and nearly all areas, aside from maybe portions of the Arklamiss Delta, will get above freezing by noon. But even spots in the Arklamiss Delta should manage to top out at least several degrees above freezing by the afternoon. Even though the modifying high pressure center will be starting to the shift to the east tonight the air mass will remain very dry and winds light, again promoting good radiational cooling.
430 AM CST Thu Jan 18 2018 The warming trend continues across the local area today with high pressure building aloft and light westerly winds expected to continue to help modify the local airmass near the surface. did side towards the lower side of guidance in those snow covered areas. expect a more mild night across the region with most locations bottoming out in the lower to mid 20s. or about 10 degrees above seasonal norms! Friday is expected to be the warmest day of the period as the upper level ridge will be centered over the plains and most of the remaining snow cover across the local area will have already melted. things will begin to change as a cold front drops down from the north.
741 AM EST Thu Jan 18 2018 Deep low pressure just off the coast today will lift quickly northeast. High pressure will build in from the west today through the weekend.
500 AM CST Thu Jan 18 2018 Area early this morning was between high pressure centered over the Southern Mississippi River valley and a rather potent mid-level low rotating eastward across southwest Ontario. Another wave of low pressure will track across southern Canada tonight through Friday night, drawing in even milder air into our region along with a few clouds from time to time.
636 AM EST Thu Jan 18 2018 Deep low pressure just off the coast today will lift quickly northeast. High pressure will build in from the west today through the weekend.
Later today and into Friday a cold front will pass from NW to SE across the region.
1022 AM EST Thu Jan 18 2018 A large are of high pressure centered over the Lower Mississippi Valley will maintain fair skies for the next few days.
The base of the trough swings through Friday afternoon into early Friday evening with precipitation then tapering off.
This weekend, high temperatures will be in the lower to middle 40s. As with typical lake effect NEPA and Elmira will be sunnier, drier, and warmer. Fairly quiet weather conditions expected this weekend with a weak area of high pressure in place within a relatively mild air mass.
320 AM MST Thu Jan 18 2018 Overnight water vapor imagery depicted a upper level ridge axis from southern CA to central MT with prevailing northwest flow aloft. Upper ridge of high pressure will shift east across the CWFA today and be located over the eastern Great Plains and Midwest Friday. At this time, confidence is high for high winds to develop late tonight across the north Snowy Range foothills, and upgraded the High Wind Watch to a Warning. The upper ridge is progged to shift to the east of our area by Friday with an increasingly active southwesterly upper flow ahead of the next system setting up.
549 AM EST Thu Jan 18 2018 A weak ridge of high pressure will bring quiet and seasonable weather to the area today. A warm front will lift north across the area late tonight and early Friday with clouds and a few mountain snow showers. Weak ridging will take center stage today. with lingering clouds and scattered flurries confined to the higher terrain in upslope flow. We'll see a band of warm air advection clouds overnight with this feature and perhaps a few snow showers across the higher terrain.
Today Through Friday Night Arctic high pressure will very slowly build toward the southeast United States the next couple of days. While below average temperatures remain in the forecast today, readings will climb above freezing at most locations.
612 AM CST Thu Jan 18 2018 Based on the 12Z CRP sounding showing an environment a tad warmer than previously forecasted and also based on area observations where temps have been generally holding steady at 34-36 degrees, therefore have cancelled the Freeze Warning. Question is, will temps drop to freezing by later this morning. Kept the mention of freezing rain/sleet for later this morning, however, may do an update later this morning to remove the mention of frozen precip and Freeze Warning if temps do not budge and this morning's sounding shows a warmer environment aloft than forecasted. Otherwise, still looks like -RA chances will be on the increase from south to north this afternoon and tonight as a coastal trough continues to develop and an upper level long wave trough approaches from the west and combines with increasing moisture.
Breezy, mild wx today ahead of approaching Pacific cold front.
The ridge will move off to the east today and tonight.
947 AM EST Thu Jan 18 2018 A weak ridge of high pressure will bring quiet and seasonable weather to the area today. A warm front will lift north across the area late tonight and early Friday with clouds and a few mountain snow showers. Did add low chance PoPs for snow showers for northern and central zones tonight with strong short wave trough moving through. Weak ridging will take center stage today. with lingering clouds and scattered flurries confined to the higher terrain in upslope flow. We'll see a band of warm air advection clouds overnight with this feature and perhaps a few snow showers across the higher terrain.
1030 AM EST Thu Jan 18 2018 Arctic high pressure will build into the region today into Friday.
1000 AM EST Thu Jan 18 2018 Deep low pressure just off the coast today will lift quickly northeast. High pressure will build in from the west today through the weekend.
541 AM CST Thu Jan 18 2018 The warming trend continues across the local area today with high pressure building aloft and light westerly winds expected to continue to help modify the local airmass near the surface. did side towards the lower side of guidance in those snow covered areas. expect a more mild night across the region with most locations bottoming out in the lower to mid 20s. or about 10 degrees above seasonal norms! Friday is expected to be the warmest day of the period as the upper level ridge will be centered over the plains and most of the remaining snow cover across the local area will have already melted. things will begin to change as a cold front drops down from the north.
The low at Mount LeConte was -6. It will still be a cold day but warmer than yesterday with high temperatures in the 30s nearly areawide. Chattanooga Airport, TN 38 18 50 27 / 0 0 0 0 Knoxville McGhee Tyson Airport, TN 34 14 48 24 / 0 0 0 0 Oak Ridge, TN 35 15 49 25 / 0 0 0 0 Tri Cities Airport, TN 33 12 48 17 / 0 0 0 0.
The subfreezing layer is about 2,300 feet deep this morning. Arctic high pressure centered over northern Louisiana early this morning. If we can deal with the cold for another 30 hours or so, we'll finally see temperatures remain above freezing.
Freezing Temperatures Expected Again late tonight but not as This cold outbreak outperformed early this morning with freezing temperatures reaching Lake Okeechobee and Fort Pierce. High pressure over LA this morning will spread east with a ridge axis extending across north FL tonight. And with good radiational cooling expected there under clear skies and very light winds, expect freezing temperatures once again north and west of Orlando, though not as cold as this morning.
1021 AM EST Thu Jan 18 2018 Low pressure, well off the Mid Atlantic coast late this morning, will track east northeast farther out to sea this afternoon while high pressure builds in from the west.
A cold front will continue to move through the area this morning. Similar to the last few days, afternoon showers and thunderstorms will be possible, mainly across the higher terrain of central and southern Idaho. This front will precede the arrival of a Pacific trough early Tuesday morning. Again, this system will cause temperatures to cool further, with values in the low 90s expected Tuesday afternoon.
Temperatures are a little cooler across most of the area compared to 24 hours ago and generally range from the mid 40s to mid 50s in the mountain valleys to the 60s to mid 70s elsewhere. A weak upper trough is forecast to linger through mid-week providing a little synoptic cooling and allowing the Delta Breeze to return and provide some relief to portions of the valley - satellite imagery is already showing stratus attempting to fill-in along the coast.
407 AM MDT Mon Jul 10 2017 The upper level high will flatten some today thru tonight allowing for the flow aloft to become more wly albeit weak.
317 AM CDT Mon Jul 10 2017 The main concern for the next three days will remain the high temperatures and especially the high heat index values. A low pressure system over northern Iowa will cause an axis of WAA over northern Missouri to develop along the warm sector of a weak east- west oriented frontal boundary.
SHORT TERM (Now through Tuesday): 500mb ridge across the southwest United States will continue to flatten out through the period and spread eastward, keeping the CWA between it and an inverted 500 mb trough across eastern and northern Mexico. Models show drier air continuing to infiltrate the lower to mid levels, with a nice dry pocket from about 850 to 600 mb or so, especially evident this afternoon and into Tuesday.
The high pressure ridge flattens early in the week and then rebuilds over the region later this week. As the ridge rebuilds across the west late this week, temperatures are expected to warm above average. Cooler temperatures and increased low level moisture are expected early this week, though gusty and erratic outflow winds should still be anticipated. The cooler temperatures and increased moisture will result in higher minimum relative humidity values and higher chances of wetting rains.
The center of the high will be pushed from the Four Corners east and the ridge will flatten over the Great Basin. Temperatures will remain hot, in the mid to upper 90s most valleys on Monday and a degree or two cooler Tuesday.
It's a clear night with some fog noted in the low-lying, fog-prone areas. 850 mb temperatures will be a couple degrees warmer today than yesterday and without a lot of moisture return I don't see a reason why we won't be a couple degrees warmer today compared to yesterday. 850 mb temperatures will be another degree or two warmer on Tuesday so expect some locations to top out in the mid 90s.
1134 PM MDT Sun Jul 9 2017 Upper level high pressure just west of the 4-corners this afternoon, with pocket of drier air rotating southward across Colorado. Still not much forcing for precip other than terrain/instability, so suspect storms will stay close to the higher terrain, with most models suggesting best coverage of storms along the Continental Divide. Max temps Mon will rise a degf or two at many locations as 700 mb temps peak, and the usual spots along the lower Arkansas Valley will likely end up around 100f by late afternoon.
The best chance will be from about 7 pm through 11 pm along and east of the Buffalo Ridge. While exceedingly unlikely there may be a small area east of the Buffalo Ridge where enhanced low level shear could allow a brief tornado but confidence right now too low to mention. Temperatures may end up a little cooler on Monday as a strong outflow from the MN MCS will drop a boundary south into Nebraska.