Aikyam-Lab/Synoptic-Bench huggingface dataset:
Snow showers will continue into this evening as an upper trough pulls away from the area. as a strong trough dips out of canada across Indiana into the deep south. stuck with the cooler lows in the upper teens. High pressure will assert itself in the wake of this system and as a result the remainder of the short term will be dry. Models keep a strong upper low over eastern Canada just east of the Hudson Bay.
Weak high pressure will build into the area tonight providing partly cloudy to mostly clear skies and diminishing wind.
Broad lower level trough forecast to develop overnight and tomorrow ahead of next weak cold front which should allow for much less wind than we have seen today.
low pressure will move away from the coast this morning. Weak high pressure will return tonight.
1137 PM CST Sun Jan 29 2017 06Z TAFS Clear skies will continue to prevail through the TAF period as high pressure traverses the northern gulf coast. Westerly winds could turn a bit breezy Monday afternoon as the high shifts east of the area, but winds should calm after sunset. /issued 537 PM CST Sun Jan 29 2017/ 00Z TAFS Clear skies and light winds will prevail throughout the package as high pressure to the west begins to settle over the region. /issued 231 PM CST Sun Jan 29 2017/ Area is on the backside of a trough that passed through yesterday/last night.
238 AM EST Mon Jan 30 2017 Aloft - A ridge centered just offshore southern CA sprawled across the Great Basin and the Southwest Deserts while a low was over southern Baja California. In the east a long wave trough stretched from Quebec to the east Gulf of Mexico. Surface - High pressure in the Intermountain West ridged across the southern plains and over much of the Gulf of Mexico while a front was across central FL and the Atlantic waters.
Mid to upper flow looks to flatten out and become more zonal for the Mon night thru Wed time frame, which will allow a series of dry cold fronts to drop south into the plains. Ketcham The better surge of cooler air will drop down on late Tue night or early Wed, with max temps expected to drop back to near climo normals for Wed-Fri. Upper trough will continue to migrate east as the upper ridge flattens out over the Rockies.
222 AM MST Mon Jan 30 2017 Potent clipper impulse now entering ND will commence ridge flattening across the western/central CONUS, cooling temps back to and below seasonal this week. Cold front and associated pressure rise/CAA couplet will enter the fa this morning and support increasing winds, esp on the SD plains.
1146 PM EST Sun Jan 29 2017 A cold front will move across the region tonight with a ridge of high pressure building east across the region on Monday.
VFR with light winds will be the rule due high pressure remaining in control. Also, dewpoints have already crept back up into the low 40s nearer the coast with the weakening of the offshore flow. High pressure the moves east across the Gulf of Mexico Monday and Monday night. High temperatures Monday will generally be in the low to mid 70s with light winds continuing. Low temperatures Monday night will range from the low 40s across the ranchlands to the 50s near the coast.
Depending on how far west and south pcpn gets during the day could see a -ra/sn mix in the warmer air. The other concern is wind west of the low track.
Snow shower coverage will begin to decrease by midday as the upper trough exits to the east. Another system will quickly cross the Great Lakes tonight, spreading light snow across the region along a lifting warm front.
225 AM CST Mon Jan 30 2017 Wx map shows weak high pressure over the region, with calm winds inland.
Disturbances moving through the flow will bring periods of increased clouds and perhaps isolated/scattered flurries or sprinkles, but any lingering precipitation across the eastern CWA will quickly shift eastward tonight as the upper trough shifts eastward. Highs tomorrow should be around 10 degrees warmer than they were today. However, the GEM is a stronger outlier with a much deeper trof and sfc wave. As for temps, Tues still appears to be somewhat warm, but have trended twd the cooler guidance with CAA across the CWA and clouds moving into the region. Tilly Expect MVFR ceilings over northern Missouri and Iowa to spread southeast tonight ahead of a weak warm front.
Overnight low temperatures will be slightly warmer than what we saw this morning, mainly in the low to mid 30s. Warmer temperatures are expected on Monday with west winds of 6 to 12 mph. Highs will mainly be in the low to mid 70s.
A mild day across the region as temperatures have increased into the 50s across the lowest elevations of the plains while temps were in the 50s on the divides. Temps in the mtns will be relatively warm as warmer air aloft continues to move into the region (the temps in the SLV will likely be warmer than the temps along the top of the contdvd).
Overnight lows will be warmer than they have been but will still be around average.
Although the inversion remains in place, the low clouds and fog no longer exist in SW Idaho, but the low clouds are still located in valley portions of SE Oregon (mainly in Malheur County).
Thus started the high wind warning 5 hours earlier than the watch across the west, at 4 am CST, and kept the 9 am CST start central. After collaborating with neighboring offices and local discussion, the best course of action was to maintain the High Wind Watch. The high wind watch maintains the idea/potential for very windy conditions.
Low level thermal ridge located across the western Dakota overnight with mild temperatures, especially along the northern/eastern edge of the Black Hills. The arctic cold front will settle across the Northern Plains for much of this week.
1232 AM EST Mon Jan 30 2017 Low pressure over eastern Canada will continue to bring a northwest flow of air.
1151 PM EST Sun Jan 29 2017 An upper level trough and associated weak disturbance in the winds aloft will combine with a surface cold front to produce scattered snow showers through tonight. Weak high pressure returns Monday with nearly cooler temperatures. This activity is on the wane with limited moisture and loss of insolation, but with axis of the upper trough still just to our immediate west I can't rule out light scattered activity here and there overnight. By tomorrow parent upper trough axis will swing through the region with little fanfare other than variable clouds and a passing mountain flurry here and there. With high pressure and very dry air in the lower levels at least some partial sunshine is expected across southern counties where downsloping effects will occur. Monday night a weak ridge of high pressure moves overhead.
Icy and slick roads, especially bridges and secondary roadways, will also become an increasing concern as the night progresses - mainly in the advisory area where temperatures will fall into the 20s.
811 PM EDT Tue Apr 11 2017 Showers will fade tonight as a weak cold front completes passage over the region. No change was made to the Wednesday high temperature forecast about 5 to 10 degrees cooler than todays readings. High pressure will support dry conditions and seasonably warm temperature for the latter half of the week. The primary weather maker for the weekend will be a low pressure system tracking from the Plains into eastern Canada.
Clearing skies and light winds tonight will allow temperatures to be cool in the lower to middle 40s. High pressure move off to the east of the area tomorrow and a return of southerly winds Wednesday afternoon.
1140 PM CDT Tue Apr 11 2017 Ridge of high pressure to slowly move off to the east by midday on Wednesday. In the meantime, light and variable winds tonight as well as clearing skies, will allow temperatures to dip down into the low to mid 40s. Byrd A bit more active and warmer pattern will evolve through the later half of the week. A weak migratory short wave trof will move through the upper MS Valley on Wednesday night. The greatest coverage and likely MCS will be located along/north of a retreating warm front and along the nose of the LLJ, however there could be some showers and thunderstorms finding there way into the far northern CWA ahead of a sinking cold front and within the broad southwesterly LLJ/WAA regime.
1254 AM EDT Wed Apr 12 2017 Showers will diminish early this morning as a weak cold front completes passage over the region.
707 PM EDT Tue Apr 11 2017 High pressure will remain over the western Atlantic through Wednesday.
627 PM CDT Tue Apr 11 2017 Ridge of high pressure to slowly move off to the east by midday on Wednesday. In the meantime, light and variable winds tonight as well as clearing skies, will allow temperatures to dip down into the low to mid 40s. Byrd A bit more active and warmer pattern will evolve through the later half of the week. A weak migratory short wave trof will move through the upper MS Valley on Wednesday night. The greatest coverage and likely MCS will be located along/north of a retreating warm front and along the nose of the LLJ, however there could be some showers and thunderstorms finding there way into the far northern CWA ahead of a sinking cold front and within the broad southwesterly LLJ/WAA regime.
/issued 330 PM CDT Tue Apr 11 2017/ The cold front continues to move slowly through the Mid-South this afternoon.
Reluctant to go any further east as dew points drop off into the low 20s and the front edge of the showers already looks to be getting eaten away a bit by drier air but will continue to monitor trends. although the far east may fall below freezing if winds decouple and go light. Dry weather on Wednesday with a low pressure system moving across the central plains and an area of showers lifting north into the far southern zones.
Combination of steady cold advection in this layer and cyclonic vorticity advection overnight should continue to support the low stratus deck. Cold front on the way out this afternoon as temps across the far east CWA are on the way down after attaining highs in the upper 60s. Overcast has held firm over most of the area today and will likely hold through the night as high pressure remains well upstream. Cooler airmass characterized by h85 temps near 0C firmly in place for Wednesday.
1029 PM CDT Tue Apr 11 2017 Night will begin quiet as weak high pressure gradually shifts east through Minnesota and Iowa.
Forecast has light convection over southeast AR the rest of the evening to early overnight, as the upper lift and the cold front move out of AR. Tuesday evening isolated showers and a few thunderstorms will be possible mainly over central to eastern to southern AR as an upper system and cold front gradually move through the region.
Quiet conditions are expected tonight as high pressure slides east of the region. The forecast period opens up with an inverted trough across the Central Plains and a leeside low forming across Montana.
1040 PM MDT Tue Apr 11 2017 Upper flow is nearly zonal across the northern plains, with weak ridging over the Rockies. With high pressure at the surface, winds are generally light and variable. The low level jet will increase ahead of the trough, resulting in enhanced theta-e advection over southwestern/south central SD. Showers/storms will shift eastward Wednesday as another ridge builds over the region, and skies will gradually clear.
738 PM EDT Tue Apr 11 2017 A weak cold front will move east of the area early this evening.
Other updates were fairly cosmetic with minor tweaks to hourly temps and dewpoints both of which were running a few degrees warmer than observations. Despite ridging building aloft, low lvl moisture should be adequate to interact with the lingering boundary to keep a slt chc of showers or storms on Wednesday.
1001 PM EDT Tue Apr 11 2017 High pressure will remain over the western Atlantic through Wednesday.
513 PM MDT Tue Apr 11 2017 Upper flow is nearly zonal across the northern plains, with weak ridging over the Rockies. With high pressure at the surface, winds are generally light and variable. The low level jet will increase ahead of the trough, resulting in enhanced theta-e advection over southwestern/south central SD. Showers/storms will shift eastward Wednesday as another ridge builds over the region, and skies will gradually clear.
507 PM PDT Tue Apr 11 2017 A few weak disturbances will bring cooler temperatures.
Cold front on the way out this afternoon as temps across the far east CWA are on the way down after attaining highs in the upper 60s. Overcast has held firm over most of the area today and will likely hold through the night as high pressure remains well upstream. Cooler airmass characterized by h85 temps near 0C firmly in place for Wednesday.
818 PM EDT Tue Apr 11 2017 High pressure remains off the Mid Atlantic coast as low pressure tracks across the Great Lakes. A cold front crosses the region Wednesday.
1012 PM EDT Tue Apr 11 2017 An approaching weak cold front will move into the forecast area Wednesday.
Precipitation coverage and intensity is expected to decrease this evening as the cold front pushes east. Still on track to see lows in the low to upper 50s Wednesday morning.
Models still break out widespread convection w/the arrival of the upper trough, but the bulk of this looks to occur after 00Z Thu, so we've left any mention out of this set of TAFs. Some of these storms may become strong or severe given the high instability, steep lapse rates, and moderate deep layer shear. If we do get some heating, as most of the models indicate, additional showers and storms will develop in the higher terrain and areas west of the Pecos River by afternoon.
MVFR ceilings will continue to go to VFR from southwest to northeast this evening as approaching high pressure brings clearing skies.
654 PM CDT Tue Apr 11 2017 00z Issuance: VFR conditions expected overnight but low clouds will be on the increase as we near sunrise, with the lowest cigs expected across the southern and eastern Panhandles including AMA between 12z and 18z Wednesday. Showers and some isolated thunderstorms will be moving in mainly during the afternoon hours off the higher terrain out west.
913 PM CDT Tue Apr 11 2017 Mid and high level clouds will spread in from the west overnight as a short wave trough moves closer to region. Quiet conditions are expected tonight as high pressure slides east of the region. The forecast period opens up with an inverted trough across the Central Plains and a leeside low forming across Montana.
A broad upper trough remains north of the Great Lakes with weak surface cyclogenesis over eastern TX this afternoon. A very slow moving/nearly stationary cold front is stretched from SW Texas all the way through northern Ohio. Given the low confidence in the coverage of the rain, did not include fog in the forecast at this time. Northerly winds return Wednesday behind the passing cold front. The upper low will pass through Wednesday morning into Wednesday afternoon with a few hires models popping a few showers between 12- 18z. The cold front won't impact highs much and with the help of clearing skies, highs should be in the upper 70s/near 80 with lows in the lower to middle 50s.
Northerly winds return Wednesday behind the passing cold front. The upper low will pass through Wednesday morning into Wednesday afternoon with a few hires models popping a few showers between 12- 18z. The cold front won't impact highs much and with the help of clearing skies, highs should be in the upper 70s/near 80 with lows in the lower to middle 50s.
753 PM EDT Tue Apr 11 2017 A cold front will move south through the region late Wednesday and Wednesday night, followed by cool high pressure late week. A vorticity shear axis, remnants of the ongoing convection extending from the Mid MS valley southward into La, will get caught up in the westerlies associated with the northern stream trough moving through the Great Lakes. A cold front, preceded by the passage of a pre-frontal trough during the mid to late morning hours, will move through the area Wednesday afternoon and evening. The pre-frontal wind shift with winds becoming west-northwest by the late morning/early afternoon hours will limit/block low-level moisture return ahead of the front, evident in the projection of dewpoints staying in the low to mid 50s, which will suppress destabilization Wednesday afternoon.
605 PM CDT Tue Apr 11 2017 Night will begin quiet as weak high pressure gradually shifts east through Minnesota and Iowa.
Tuesday evening isolated showers and a few thunderstorms will be possible mainly over central to eastern to southern AR as an upper system and cold front gradually move through the region.
Attention will shift to the south and east where a weak inverted trough and associated moisture surge will advect toward our southern zones by early Wednesday morning.
734 PM EDT Tue Apr 11 2017 A weak cold front over western West Virginia will cross the area late tonight into Wednesday morning.
810 PM MST Tue Apr 11 2017 Strengthening high pressure aloft will bring warming temperatures through the middle part of this week as well as very dry conditions. Lighter winds and continued above normal temperatures will return for the upcoming weekend as high pressure once again reestablishes itself over the region.
Light showers have moved into the northwestern tier of Georgia ahead of the main cold front. /Issued 730 PM EDT Tue Apr 11 2017/ High pressure still in control across the area with a weak front approaching from the north and west. Temperatures slowly falling at this hour and should bottom out in the mid/upper 50s, apart from the cooler terrain to the northeast. /Issued 338 PM EDT Tue Apr 11 2017/ Upper ridge gets suppressed during the short term as a weak front drifts southward into GA. With upper ridging through the weekend most areas will remain dry, though a few showers and thunderstorms can't be ruled out each afternoon, primarily in the mountains of northeast Georgia.
High pressure will build east across central and southeast Illinois through the period, accompanied by light winds and quiet weather. The drier air with the high will help skies to clear across the area this evening, with the mostly clear skies lingering for much of Wednesday. Southerly low-level winds will develop on the back side of the ridge of high pressure for Wednesday. These warmer winds, and ample sunshine, should boost temperatures about 5 to 10 degrees warmer than today (well into the 60s in most areas).
944 PM EDT Tue Apr 11 2017 Aside from a few pockets of cumulus skirting the island chain, and associated with the isolated showers to the northwest of the Lower Keys, the service area clear to partly cloudy. On this date in Florida Keys weather history, in 1933, the high temperature in Key West was 89 degrees.
730 PM EDT Tue Apr 11 2017 High pressure still in control across the area with a weak front approaching from the north and west. Temperatures slowly falling at this hour and should bottom out in the mid/upper 50s, apart from the cooler terrain to the northeast. /Issued 338 PM EDT Tue Apr 11 2017/ Upper ridge gets suppressed during the short term as a weak front drifts southward into GA. With upper ridging through the weekend most areas will remain dry, though a few showers and thunderstorms can't be ruled out each afternoon, primarily in the mountains of northeast Georgia.
1235 AM EDT Wed Apr 12 2017 High pressure will remain over the western Atlantic through Wednesday.
Showers and thunderstorms are slowly tracking to the southeast ahead of the approaching cold front this afternoon.
858 PM EDT Tue Apr 11 2017 Not much change to the forecast as weak high pressure ridging remaining north of the region with an easterly steering flow across NE FL/SE GA.
More sunshine is expected on Wednesday as high pressure moves in.
620 PM CDT Tue Apr 11 2017 High pressure will build east across central and southeast Illinois through the period, accompanied by light winds and quiet weather. The drier air with the high will help skies to clear across the area this evening, with the mostly clear skies lingering for much of Wednesday. Southerly low-level winds will develop on the back side of the ridge of high pressure for Wednesday. These warmer winds, and ample sunshine, should boost temperatures about 5 to 10 degrees warmer than today (well into the 60s in most areas).
Chattanooga Airport, TN 57 79 56 82 / 30 10 10 20 Knoxville McGhee Tyson Airport, TN 58 77 53 79 / 40 10 10 10 Oak Ridge, TN 57 78 53 81 / 50 10 10 10 Tri Cities Airport, TN 53 75 47 77 / 50 20 10 10.
Another hot day across interior NorCal with temps currently trending a few degrees warmer than 24 hours ago. Strong high pressure remains in control over California with just a few high cirrus clouds riding over the top of the ridge. The ridge has helped compress the marine layer, now running at less than 1000 ft deep along the coast at Fort Ord. Temperatures across Northern California are running a few degrees warmer than 24 hours ago. High pressure remains in control today and will result in another hot afternoon across the interior. These forecast highs are 5 to 10 degrees warmer than normal.
708 AM CDT SAT AUG 13 2016 Storm development continues over a large swath of south and south-central Louisiana as the low tracks back to the west. Today through Sunday The main forecast issue in the short term is the continued heavy rainfall across the area associated with an area of low pressure. Given the deep warm cloud layer indicated by a freezing level of 16 kft in the 00Z LCH sounding convection will continue to efficiently produce copious amounts of rainfall. Trends in satellite and radar imagery along with latest model guidance indicates that the highest rainfall amounts through the next 12 hours will once again be over lower Acadiana where some of the heaviest rainfall has occurred over the past 24 hours.
This should lessen as soon as we heat up and begin to mix the lower levels of the atmosphere.
Surface map at 06Z shows the Bermuda High off to our east and a cold front coming together west of the Mississippi River.
Upper level ridging will keep Montana dry and warm today. Central and Southwest Montana are underneath high pressure aloft with a dry and stable air mass.
Axis of Atlantic high pressure ridge remains well north of ECFL this morning. The current advertisement of VCTS for the inland aerodromes looks fine, and may actually be a little pessimistic given the low coverage of SHRA/TS expected. Mid level inverted trough will move move across the srn peninsula early Sunday morning and into the ern Gulf by afternoon. Will continue 30 percent chance near the east coast to 40-50 percent across the interior with the highest coverage in the late afternoon west of I-4. Highs in the upper 80s/around 90 along the coast and in the lower 90s across the interior.
A few isolated showers will be possible but coverage should be limited with the anti-cyclonic flow from the ridge to the east. Southerly winds will increase to over 7 kts at all of the terminals by 14-15z with a tightening pressure gradient between the high to the east and the low to the west.
705 AM CDT SAT AUG 13 2016 A weak cold front is currently making its way southeast across the forecast area. It should be slightly cooler and less humid behind the front today, which includes roughly the northwest 2/3 of the forecast area.
1105 AM CDT SAT AUG 13 2016 Latest surface analysis indicates low pressure centered over nwrn LA with a frontal boundary stretching across sern MO, north central AR, and into nern TX.