Aikyam-Lab/Synoptic-Bench huggingface dataset:
Overnight a cold front moves through the region with light snow down to valley floors by morning while locally heavier amounts are expected over the northern mountains and Camas Prairie.
The winds will become light overnight, and thus strong radiational cooling will allow temperatures to fall to around freezing or just below for much of the area. This combined with sunny skies will allow temperatures be a little warmer, with highs mostly in the low 60s.
This Weekend: Mid-level troughing dips into the Northern US for the weekend pushing a cold front across the region and dropping temperatures back to or slightly below the seasonal normals.
415 AM EST Thu Jan 25 2018 High pressure will allow build into the region and provide dry conditions through Friday night.
High pressure today ahead of a weak cold front beginning late Thursday will result in warmer temperatures through Thursday along with continued dry conditions.
252 AM CST Thu Jan 25 2018 252 AM CST Fair and mild conditions are in store today and tonight as 1035 mb high pressure slides east. The influence of troughing west to the west over the Plains will tighten the pressure gradient enough for sustained southerly winds of about 10-15 mph with gusts up to 20-25 mph south of I-80 during daylight hours.
As the trough moves to the east today clouds and precip chances will move to the east out of the region. Friday: Sunny and Dry The axis of the upper level ridge Friday morning will likely stretch from Michigan down through Florida. Southern flow will help to lift CWA highs into the upper 50s with southern counties near the Tennessee boarder into the lower 60s.
High pressure will slide east today while low pressure begins to push into the northern/central high plains. We should climb into the mid 30s to lower 40s today, coolest in the southeast, warmer west of Madison. Still, the mixing and warmer airmass in place will keep temps mostly in check, only falling into the upper 20s to lower 30s.
WV imagery and RAP analysis indicated mid/upper level ridging over the northern Rockies and a downstream trough over the Great Lakes into the Mid Atlantic states. closer to approaching warm front. Mid/upper level ridging will advance through the cntrl CONUS to the Great Lakes from Wed into Fri as a trough moves through the wrn CONUS.
Will recommend to later shifts to re-evaluate western Converse county for potential inclusion in this highlight. Winds subside briefly by early Thursday evening, but there is some potential for a bora event along/E of the Laramie Range during the late Thursday night/early Friday morning time frame w/ the passage of a strong cold front.
1147 PM CST Wed Jan 24 2018 Much of the low level stratus clouds has either dissipated with diurnal heating, mixing, and drying, or advected east of the forecast area this afternoon. Warmer temperatures can be expected tonight with unseasonably warm highs on Thursday due to low-mid level warm air advection, surface winds becoming southwesterly on Thursday, and rising upper level heights as an upper level ridge shifts eastward into the central US on Thursday. GKS A ridge of high pressure over the region will quickly shift east away from the area due to a progressive upper air pattern in place.
154 AM EST Thu Jan 25 2018 High pressure builds in Thursday. Warmer to end the week. Cold front this weekend. Will be well into thickness recovery with the approach of a 500mb ridge and low level war air advection Thursday and Thursday night. Translation to warmer air at the surface today will be minimal, however, but this should prevent the sheltered valleys from bottoming out too far in terms of temperatures tonight. High pressure resides over the Piedmont and Mid-Atlantic seaboard to start the period and is accompanied by southwesterly flow for a warmer Friday.
The lower and mid levels of the atmosphere were quite dry with most of the moisture in the profile confined to the upper levels. Moderate north to northwest winds were observed in the lower levels while moderate to strong west to west-southwest winds prevailed throughout the remainder of the column. Thursday morning lows will dip to near freezing across northern and inland areas thanks to ideal radiational cooling and cold air drainage. Southeast onshore flow at the surface begins Friday as the high moves east. Clouds return and temperatures will warm into the low to mid 60s with a slight chance for spot showers. Both the GFS and ECMWF now have a similarly broad 500 mb trough crossing the Rockies Friday.
154 AM EST Thu Jan 25 2018 Light flurries and patchy freezing drizzle is expected to gradually diminish as it moves eastward overnight. Lows will drop into the low to mid 20s.
Upper heights will rise as ridging starts to build into the Plains overnight. Most of the high resolution models have fog redeveloping somewhere in the CWA overnight, just a question of where and how dense. The upper ridge moves east into the CWA tomorrow. Hopefully it is not just wish-casting, but think that there will be enough wind to bring clearing and mix some of the warmer temperatures down to surface. look for the upper level ridge to shift east over the forecast area ahead of a surface system crossing the area. Behind the low. cooler temperatures will prevail for a day or so. Temps will rebound again toward the end of the period as another low pressure system approaches.
Temperatures were at or above freezing at 20Z with the warmest readings found in snow free areas of the south as expected. Even warmer temperatures are expected on Thursday as an upper ridge moves over the region. border on Friday and drag a cold front through the region.
345 AM CST Thu Jan 25 2018 An upper low over northern Mexico is expected to move northeastward across Texas today. Tomorrow a cold front remains on track to drop southward across the area.
255 AM CST Thu Jan 25 2018 Water vapor imagery this morning showing a well amplified upper ridge in control over the CONUS. Meanwhile, upstream longwave trof was coming ashore over the west coast with hefty Pacific moisture spreading across the wrn CONUS. an area of low pressure was centered over sern Canada with a trof extending sewd into the wrn Dakotas.
Rain will turn to showers behind the cold front overnight.
mainly north of TYS into the overnight hours as an upper low slowly pulls out of the region. will see improving conditions as high pressure builds in.
1006 PM CST Wed Jan 24 2018 Sfc ridging remains in place across the region this evening, but should slowly begin to shift E into the Lower MS Valley by daybreak Thursday.
A stationary trough of low pressure located in eastern Colorado will keep the winds out of the southwest for the time period. Slightly cooler air will return to the region on Friday. An upper level trough will move across the central and northern plains and a cold front will come in Friday afternoon. An upper level ridge will start to move through the northern plains allowing the milder air to stay in place and keeping the arctic air mass well off to the north and east. Towards the end of the forecast period there is hints in both the GFS and Euro models of a stronger cold front coming into the area along with an arctic air mass which may be enough to squeeze out some rain/snow showers.
Upper heights start to fall on Thursday ahead a minor short wave trough moving northeast out of Mexico and ahead of a much stronger short wave moving east through the northern and central Rockies. High temperatures will also be about 5 degrees warmer than today. A cold front will move through the region on Friday as the upper level trough moves east onto the plains.
1252 AM EST Thu Jan 25 2018 Light flurries and patchy freezing drizzle is expected to gradually diminish as it moves eastward overnight. Lows will drop into the low to mid 20s.
1217 AM EST Thu Jan 25 2018 Dry high pressure will dominate through Friday.
459 AM EST Thu Jan 25 2018 High pressure over the region will move off to the eat Friday.
The upper low pressure trough continues to move east, while upper northwest flow is into the region. An upper high pressure ridge was over the Rockies. On Thursday, mostly sunny skies will be seen as the upper high pressure ridge will move over the region, and this will help warm temperatures in to the 60s most locations, while the upper 50s east. The south wind flow will return on Thursday, with the highest wind speeds over the northwest.
A cold front is slowly moving east across the forecast area currently stretching from from the Tri- cities area back into central Oregon. Satellite shows large upper low continues to move slowly toward the coast. This cold front will cross the forecast area late this afternoon and into the evening with a period of steady rain and higher elevation snow. The weakening upper low will then move across the Pacific northwest Thursday with mostly cloudy skies and showers.
Dry northerly to northeasterly surface flow will continue as high pressure builds from the Lower Mississippi and Tennessee Valley regions tonight to the eastern states Thursday. High temperatures Thursday should modify into the lower 60s. More weaker impulses swing east from over the Southern to over the Lower Mississippi River Valley and with the onshore flow bringing increasing moisture levels, rain starts to work its way over the forecast area from the southwest.
Weak northwest flow aloft will transition to southwesterly, as a broad low amplitude upper trof depresses heights over the central U.
314 AM EST Thu Jan 25 2018 Scattered snow flurries will continue over the southern tier and Finger Lakes region early this morning, then high pressure will bring clearing skies by afternoon.
1255 AM EST Thu Jan 25 2018 WV imagery and RAP analysis indicated mid/upper level ridging over UT through the nrn Rockies and a downstream trough over the Great Lakes into the OH valley. Otherwise, patchy sunshine prevailed over Upper Michigan as weak sfc ridging moves off to the east. Tonight, the combination of the shrtwv and weak trough may bring some light snow showers through wrn Lake Superior into the Keweenaw. Thursday, WAA will increase as the mid level ridge move eastward and low pressure develops into the plains. Mid/upper level ridging will advance through the cntrl CONUS to the Great Lakes from Wed into Fri as a trough moves through the wrn CONUS.
Somewhat better mixing in the Sandhills should keep lows near 20 or the lower 20s, with upper teens expected elsewhere. A upper level trough will move across the northern Plains this weekend.
1205 AM EST Thu Jan 25 2018 High pressure will build in from the south tonight and slowly slide off to the east through Friday.
With the sun shinning we will see temperatures several degrees warmer than yesterday.
An upper trough moving across the area this morning is generating high cloudiness with low and mid levels too dry for any rainfall. Gusty northeast winds today will make it feel even cooler especially near the east coast where winds will be stronger as the high strengthens and pressure gradient tightens.
Aloft a trough will pivot north of the region overnight, with brief cold air advection by the early morning hours. Temperatures will drop by early morning into the mid/upper 20s across the higher terrain and to the low/mid 30s elsewhere. By the afternoon, ridging will build in from the west with winds veering to the NE. Given this synoptic pattern, expect daytime highs tomorrow around normal (low 50s across the higher elevation, mid 50s across the metro to near 60 across central GA) and overnight temperatures on Thursday night/early Friday dropping to around freezing area wide. Despite weak sfc ridging along the leeward side of the Appalachians on Friday.
An upper level trough continues to push eastward across the eastern half of the CONUS this afternoon, with a strong upper jet streak stretching over the lower Mississippi Valley northeastward toward the Mid-Atlantic region. Typically this would be a favorable setup for precipitation for our area; however, at the surface a broad area of high pressure is moving eastward into our area. Skies will clear from northwest to southeast overnight as northerly flow continues to advect drier and cooler air into our area. Low temperatures will range from the lower-mid 30s across our area. High pressure initially centered across the lower MS Valley will slide eastward to the mid-Atlantic states by Friday with the surface winds becoming easterly.
312 AM EST Thu Jan 25 2018 Light snow chances should continue until high pressure returns dry weather later this morning through Friday.
453 AM EST Thu Jan 25 2018 Currently - High pressure is spreading across the eastern Gulf of Mexico and nearby Atlantic waters. Residual moisture associated with a dying cold front through the lower levels and some lower level lift is supporting isolated to scattered showers, mainly over the Florida Straits. Temperatures have dome down into the upper 60s with dew points pushing downwards through the lower 60s. Forecast - High pressure will continue to shift eastwards through the eastern United States today and out into the Atlantic this weekend.
A band of light snow showers developed overnight as a shearing pv filament advected across the elevated portion of the warm front which will work north through southern MI this morning. The inversion currently around 3500ft will lower as the warm front. Model soundings suggest the trapped moisture which has been producing flurries for the last 24 hours will try to squeeze out a short period of drizzle (freezing drizzle) before drier air moves in. The rest of the day will feature mid level height building as longwave ridge begins to slide into the region.
336 AM EST Thu Jan 25 2018 High pressure will move overhead today, with a wedge remaining along the east coast through the remainder of the forecast period.
/issued 315 PM CST Wed Jan 24 2018/ Upper low over northwest Mexico expected to kick northeast and open as it lifts across our area Thursday. This low has very minimal moisture so we do not anticipate much in way of cloud cover, though low level flow may remain backed from the south enough to avoid much downslope drying. Then, a modest cold front will pass Friday evening - solutions have actually trended slightly stronger at least briefly with wind speeds just behind the front.
340 AM CST Thu Jan 25 2018 A closed upper low over southern New Mexico will open up as it moves across the South Plains and Panhandle today. However, seeing how dewpoints were several degrees lower than guidance yesterday, have gone on the low side of guidance for this afternoon. A surface cold front extending from a low over the Great Lakes is still on track to move through the South Plains Friday evening.
345 AM EST Thu Jan 25 2018 High pressure over the region will move off to the eat Friday.
1103 PM CST Wed Jan 24 2018 Much warmer conditions were observed over extreme southeast Kansas and the Missouri Ozarks today. Relative humidities will drop into the low to middle 20s west of Highway 65, with surface winds exceeding 20 mph. A cold front will push through the region on Friday night bringing rain chances.
/issued 323 PM EDT Mon Oct 30 2017/ Mostly zonal flow aloft becomes more southwesterly overnight as a deep trough moves across eastern Canada.
616 PM MDT Mon Oct 30 2017 Broad northwest flow across the western US with high pressure off Pacific NW coast and trough over the Mississippi Valley.
Conditions are expected to remain clear with light winds and cool this evening, as temperatures are expected to drop to near or below freezing in many locations by tomorrow morning.
935 PM EDT Mon Oct 30 2017 A weak, reinforcing cold front will pass through the area tonight into early Tuesday, before high pressure builds into the mid-Atlantic through Tuesday night.
Min temps to be a bit warmer than previously forecast due to the increased cloud cover. With the cold start and the clouds moving back in, tomorrow's highs should be cooler than today's.
Should the cloud cover arrive in the northern zones overnight, it will help level off temperatures and prevent freezing temps in those areas. Isolated areas may see temps around freezing, but majority of the mid state looking at mid to upper 30s.
Mid-State temperatures warmed up quickly today, in advance of an approaching cold front. a jump of some 35 to 40 degrees! At 3 pm, the cold front was just east of CKV, headed toward Nashville, with nothing by sunny skies out ahead of it. The cold front is expected to continue across the Mid-State overnight, without producing any precipitation. Some cooler air will follow the passage of today's cold front, with highs on Tuesday backing off into the 50s.
/issued 327 PM CDT Mon Oct 30 2017/ Midafternoon surface analysis showed a cold front along and just south of the I-40 corridor. Model soundings depict returning moisture in the 850-700mb layer Tuesday afternoon, in advance of a midlevel trof over the plains.
/Issued 339 PM CDT Mon Oct 30 2017/ Colder weather is moving into the area in the wake of a cold front that moved through earlier today. The highest rain chances and amounts still look to be across southeast Oklahoma and northwest Arkansas.
913 PM MST Mon Oct 30 2017 A brief cooling trend will begin today as a weak low pressure system tracks across the region.
As the area of high pressure pushes southeastward toward the central Plains, NW flow aloft has already begun to bring more clouds to the region. Southwest winds ahead of the low should warm things into the 40s most areas. Thener trough broadens afterwards and sharpens over the Pacific NW over the weekend.
Currently, a broad upper level trough remains entrenched over the north central and northeastern CONUS. Surface temps for this afternoon have been close to advertised with cooler air advecting into the area keeping temps north of I-70 in the upper 40s and temps south of I-70 in the low 50s. Winds should diminish heading into the sunset time frame as the pressure gradient relaxes over the area and the parent low pressure system over the Great Lakes region lifts to the northeast. Strong radiational cooling should take place, so have low temps returning into the low 20s in some spots. Dry layer and depth of the subcloud layer being above freezing give some concern on what falls at the surface.
/issued 335 PM CDT Mon Oct 30 2017/ (Tonight and Tuesday) Cold front from south of Ft Stockton and San Angelo to Brownwood at 3 PM will move south of the I-10 corridor by 7 PM this evening. Lift from an upper low moving east through southern Arizona will move into West Central Texas Tuesday morning. By late afternoon, lift due to upper low will be over, except for eastern zones.
Latest surface observations suggest that a weak cold front continues to push very slowly southeastward into northwest AL this evening. Weak advection of both cooler and drier air north of the boundary should allow temps to fall into the u30s/l40s by sunrise, although readings will likely remain in the l/m 40s near our larger bodies of water such as the TN River and Lake Guntersville. As mentioned, a weak (dry) cold front will move through the region by early Tuesday morning, veering our winds to a NW to northerly direction. This shift will bring in some cooler air which will help to keep temperatures in check by a few degrees during the day. Clouds will filter into the region as temperatures fall from the lower 60s into the 50s and 40s over the course of the evening and night.
Another chilly night is in store for the area as high pressure settles in over north central Florida. Most locations across east central Florida have already fallen into the low to mid 50s as of 9 p. Low temperatures will again approach record territory in the low to mid 40s (see climate section below for records). High pressure shifts north of the state, resulting in onshore (northeast) flow that will begin to moderate the near- surface environment and allow temperatures to climb several degrees relative to Monday. Conditions during evening festivities look frighteningly delightful, with temps in the low 70s before sunset dropping into the 60s through late evening. Boating conditions improve further as high pressure settles to the north of Florida, providing a gentle north to northeast wind around 10 knots.
713 PM EDT Mon Oct 30 2017 A weak, dry cold front will cross the area this evening/early tonight this will bring some clouds to mainly the northern half of the forecast area, but VFR conditions are expected through the entire TAF period.
Chattanooga Airport, TN 40 62 44 66 / 0 0 10 20 Knoxville McGhee Tyson Airport, TN 38 59 42 65 / 0 0 10 10 Oak Ridge, TN 38 58 41 64 / 0 0 10 20 Tri Cities Airport, TN 37 58 39 63 / 0 0 10 10.
727 PM EDT Mon Oct 30 2017 High pressure on Tuesday will bring mostly sunny but cool conditions.
Cold front has moved through Comanche-Dallas area and should march south overnight reaching CLL area 09-12z and then slow. Drew the highest POPS/QPF over those counties that will experience the greatest 24 hour moisture flux. Halloween maximum temperatures will struggle to reach the lower 70s up north (overcast and rain). afternoon still remaining warmer middle to upper 70s further south.
Temps forecast tonight is going to be in the lower half of the 30s for most locations, but extent of any frost development will be driven by clear out of clouds and lessening of winds, which may maintain a 5 mph breeze or so for much of the night.
Updated the low temperature forecast for this corridor to go a little colder tonight. There was another brief patch of freezing drizzle across the Wadena area, but this has ended and will watch for more reports. Winds will diminish this evening and overnight as high pressure propagates into the region. High pressure on Tuesday will lead to a relatively quiet day.
947 PM EDT Mon Oct 30 2017 High pressure gradually builds to the south before settling over the region on Tuesday night. High pressure gradually builds to the south before settling over the region on Tuesday night. Weak front or trough approaches the area overnight. Drier and cooler air continues to advect into the region. The pressure gradient weakens between the departing low and incoming high pressure. Expecting a few locations to the north and in the Pine Barrens of Long Island to approach the freezing mark or even a few degrees below.
A cold front will continue to settle to the south of the forecast area. Cooler air will filter south with low temperatures dropping into the upper 30 north to lower 40s south. /issued 327 PM CDT Mon Oct 30 2017/ Midafternoon surface analysis showed a cold front along and just south of the I-40 corridor. Model soundings depict returning moisture in the 850-700mb layer Tuesday afternoon, in advance of a midlevel trof over the plains.
645 PM CDT Mon Oct 30 2017 As of this afternoon, the center of the upper low was over the western Great Lakes, with strong cyclonic flow and cold air advection across our region. Snow showers will continue this afternoon, possibly mixed with rain at times but for the most part should fall as snow with temperatures in the mid 30s and the fairly shallow layer near the ground with temperatures above freezing. This will occur as the upper low shifts eastward tonight.
1025 PM EDT Mon Oct 30 2017 Currently - A high pressure cell centered over the eastern Gulf of mexico and Florida. High pressure moving eastwards across the Florida Peninsula will keep winds light to gentle out of the north to northeast. Key West is expected to dip into the low 60s tonight.
855 PM PDT Mon Oct 30 2017 Cool weather will continue this week under weak low pressure aloft. A low pressure trough will strengthen this weekend, bringing a chance of rain showers and windy conditions. Cooler weather will continue this week with lower heights aloft. Light showers and patchy drizzle is possible tonight west of the mountains as the trough over northern CA swings across the area.
1028 PM EDT Mon Oct 30 2017 Intense low pressure in Quebec will continue moving away from the region overnight. A trough of low pressure will cross the area Tuesday evening.