Aikyam-Lab/Synoptic-Bench huggingface dataset:
152 AM EDT SAT OCT 15 2016 Canadian high pressure will extend across central NC through the weekend. The thicker cloud cover to the west will aid to keep sfc temperatures a little warmer compared to the east tonight where clouds will be less obtrusive. The area of high pressure at the surface will remain nearly stationary Saturday and Saturday night, maintaining a relatively tranquil weather pattern. The low level northeast flow expected to advect additional moisture, possibly resulting in the formation of more stratocu across the northern coastal plain and the northeast Piedmont in the afternoon. High temps Saturday should be comparable or a degree warmer than high temps observed this afternoon. Under clear-mostly clear skies, overnight temperatures should vary from the mid-upper 40s north and west to the lower 50s southeast.
1140 PM MDT Fri Oct 14 2016 Sent a quick update to cancel the High Wind Warning for western and northern Carbon county as winds have lowered below 40 MPH and are expected to stay there through the night. Regarding the High Wind Warning, a few sites along the I-80 corridor out near Arlington have reached or surpassed warning threshold, with a couple others in central and northern Carbon County quite close in the low to mid 50mph range. In addition, moisture advection from the west and cooler temps will keep humidities overall higher in the upper teens to low 20s. A few rain/snow showers still look possible over the high mountains and vicinity tomorrow morning with increasing moisture, but no impacts are expected. Forecast challenges will focus on high wind potential early in the period, then precipitation and cooler temperatures mid-week.
257 AM EDT Sat Oct 15 2016 Very weak warm front today.
412 AM EDT Sat Oct 15 2016 High pressure to the north of South Florida, will keep the northeast to easterly wind across the region for the next several days. There is a ridge at 500mb, albeit weak, that is helping to lower the risk of any convective activity. However, models are showing that a 500mb trough, currently over the Mississippi Valley, will dig southeast and be over the Florida peninsula by Sunday. Models then indicate the low will slowly cut off over the course of several days, and sit south of a stronger 500mb ridge over the southeast US.
Cloud cover and cooler air aloft will hold temperatures near seasonal levels in the 60s. with just a slight chance of a light shower over the lower elevations. By sunrise Sunday another cold front will begin to move into the area as well spreading a chance of showers into the lower elevations as far east as Rosebud county.
330 AM EDT Sat Oct 15 2016 High pressure over southern New England will move move south of the area Sunday. A cold front is expected to remain north of the region during the first half of the week leading to above average temperatures. High pressure will track south of the Mid Atlantic.
424 AM EDT Sat Oct 15 2016 High pressure over southern New England will move move south of the area Sunday. A cold front is expected to remain north of the region during the first half of the week leading to above average temperatures. High pressure will track south of the Mid Atlantic.
To the south hot high pressure has taken over the Four Corners. Today: Zonal flow aloft along with a meso ridge between one exiting system and another entering one will keep conditions dry and partly cloudy. This should generate a low pressure system over the Montana high plains with a few isolated rain showers and a strong downslope wind by Sunday.
117 AM EDT Sat Oct 15 2016 High pressure remains tonight. Very weak warm front crosses Saturday.
520 AM EDT Sat Oct 15 2016 High pressure will maintain dry weather today before a weak disturbance returns shower chances for later Sunday and Sunday night. Much warmer temperatures are expected to start the week. High pressure across the NE CONUS is expected to maintain dry weather today. Models continue to trend further north with this feature, so the highest chance POPs were nudged mainly north of PIT.
646 AM EDT Sat Oct 15 2016 Weak upper level trough will continue moving northwest of the area today spreading clouds across the area.
Mechanism for overnight showers will be moist southwest flow moving into the higher terrain.
152 AM EDT Sat Oct 15 2016 High pressure will remain over the forecast area for the start of the weekend. A cold front will move through the region Sunday night. High pressure will remain over the forecast area tonight. This will help to keep temperatures warmer than last night in most areas. A cold front will approach the region late in the day Sunday.
Cold frontal boundary looks to be stalled out to our north. With the WRKHGT product showing 850/700mb Craig to Casper gradients decreasing, decided to expire the High Wind Warning early and start turning attention to the next wind event.
Upper level low across the Pacific NW with moisture drawn from the Pacific Ocean to the northeast across the Rockies and onto the high plains. Unseasonably warm temps aloft with a thermal ridge across the Rockies and western plains. The high clouds and warm temps aloft will keep lows mild. Tomorrow slightly cooler air fills in behind the trough bringing a switch to NW winds. SW Neb will see cooler air arrive a little later and highs still top out in the lower 80s, locally mid 80s cannot be ruled out.
SHORT TERM (Today through Sunday): 500mb ridge across northern Mexico and the western half of the state will provide subsidence across the CWA today. Subsidence will increase across the area tonight into Sunday as the upper level ridge of high pressure moves eastward across Texas tonight. Will lean towards persistence for temperatures today and Sunday as observed highs the past two days have been slightly warmer than MOS temp guidance.
331 AM CDT Sat Oct 15 2016 Building upper ridge in the wake of an exiting trof will bring several days of unseasonably warm weather.
133 AM EDT Sat Oct 15 2016 Aviation High pressure will move east and a cold front will cross Michigan Saturday night and Sunday. Showers and thunderstorms will accompany the cold front.
139 AM EDT Sat Oct 15 2016 High pressure will maintain dry conditions across the region through Saturday evening with seasonably warm temperatures.
Strong high pressure to the east and a strengthening low across the high plains will keep low/mid level flow southerly. Continued isentropic lift over a cooler surface layer will again result in the formation/continuation of patchy fog and low clouds over much of the state. A return of zonally-oriented to northwest flow aloft on the northeast side of an upper high, combined with southerly flow in the low levels will result in warmer than average temperatures this weekend.
Basically have a ridge of high pressure to our south with the rather strong westerlies well to the north resulting in dry and light westerly flow across our region. What that means is continued sunny days with warmer than normal temperatures and cool overnight temperatures due to the clear skies and dry air mass.
Deep moisture transport continues across the region today as short waves lift out of a Pacific trough.
300 AM EDT Sat Oct 15 2016 High pressure will maintain dry weather today before a weak disturbance returns shower chances for later Sunday and Sunday night. Much warmer temperatures are expected to start the week. High pressure across the NE CONUS is expected to maintain dry weather today. Models continue to trend further north with this feature, so the highest chance POPs were nudged mainly north of PIT.
333 AM EDT Sat Oct 15 2016 High pressure will move east tonight with another cold front approaching the area by late Sunday. A bit warmer today. Afternoon high temps are forecast to reach into the low and mid 50s which is right around normal for mid October.
153 AM EDT Sat Oct 15 2016 High pressure building across the region will keep weather conditions quiet through Sunday morning.
413 AM CDT SAT OCT 15 2016 Anticyclonic upper flow will remain intact through tonight as a tall dome of high pressure relocates eastward across the Permian Basin. This anemic pattern is being countered with some drama in the low levels across our western and northern zones where an encore performance of stratus and some fog was noted.
425 AM EDT Sat Oct 15 2016 Weak upper level trough will continue moving northwest of the area today spreading clouds across the area.
Breezy sly winds and moisture advection will continue today with the low to mid level thermal ridge shifting south across the region. For tonight, the cold front will gradually shift esewd into srn WI.
With near saturation towards the sfc, patchy drizzle is expected to develop around sunrise and continue through late afternoon until the upper trough clears eastward and lower dewpoints enter north central Kansas. As a result of the drizzle and the persistent stratus lingering through late afternoon, have lowered highs today a few degrees from the lower 70s over far northeast Kansas, to near 80 degrees for north central areas.
331 AM CDT Sat Oct 15 2016 A stubborn band of clouds, associated with slow-moving upper level low pressure area, remained stretched across the northwestern two- thirds of our forecast area early this morning. Believe as upper low pressure area moves eastward across our area today, there will be at least a small chance for showers invof of the upper low center (which should track from western TN into northern Alabama.
411 AM EDT Sat Oct 15 2016 High pressure will keep weather conditions quiet through Sunday morning. As the high exits to our southeast, a front will sweep through late Sunday into Sunday night with scattered rain showers.
Temps will range from the lower 60s south to mid to upper 50s north.
Sfc lee trof persisting with low level moisture returning to portions of se NM, especially along and east of a line from near KROW to KCVN, where lcl br possible 15/08Z- 15Z.
331 AM CDT SAT OCT 15 2016 A taste of summer is in store for the Panhandles Today as high temperatures increase into the lower to mid 90s. The movement of this low will keep the surface pressure gradient slightly more relaxed across the Oklahoma and northern Texas Panhandles while the gradient is stronger for the southern Texas Panhandle. Latest upper level analysis places high pressure with broad anti- cyclonic flow centered over the Baja Peninsula with weak zonal flow over the southern Rockies and out over the Panhandles.
437 AM CDT SAT OCT 15 2016 (Today and Tonight) Dry and warm conditions will prevail across West Central Texas today as a weak ridge builds into the area from the west.
626 AM EDT Sat Oct 15 2016 High pressure will keep weather conditions quiet through Sunday morning. As the high exits to our southeast, a front will sweep through late Sunday into Sunday night with scattered rain showers.
340 AM CDT Sat Oct 15 2016 Mid/upper level high pressure building across the area over the weekend will help to suppress any significant shower or thunderstorm development.
355 AM EDT Sat Oct 15 2016 Short range models in good agreement with upper level short wave currently moving across the lower MS Valley drifting east and across the forecast area today. This upper disturbance will overrun a cool surface wedge of high pressure nosing in from the northeast and bring mostly cloudy conditions to the forecast area today. The clouds and cool easterly wind flow will warrant leaning toward the cooler side of guidance for highs today. mainly in the lower to mid 70s behind the wedge front.
Have trended forecast drier and warmer, especially across southwest Idaho zones for today.
345 AM CDT Sat Oct 15 2016 A weak cold front will make it's way across western and north central Nebraska this morning.
Surface wise, an expansive ridge of high pressure is aligned over the eastern seaboard southward into the peninsula of Florida.
Aside from patchy morning fog, VFR conditions should prevail next 24 hours as sfc flow continues veering to the south under upper- lvl ridging.
Winds will stay up for a time over the eastern areas, but will fall toward morning as the trough approaches the area. Fog should lift rapidly then the trough moves east and winds pick up over the Brush Country and Rio Grande Plains (less so farther east). Another warm day due to the NNW winds but not as warm as today as 850 mb temperatures are cooler. Winds diminish on Friday as the trough moves offshore, then increase Friday night as the pressure gradient increases due to the surging high pressure.
Expect colder temperatures today, behind a cold front that moved through overnight.
This system will continue to move to the northwest, deepening and sending todays front back to the north as a warm front as the warmer airmass in the SE pushes back with more significant warm advection. This warmer and minimally higher RH air will be the instability that will potentially fuel the storms that may develop tomorrow afternoon after the low passes to the north, dragging the cold front across eastern Illinois. The low pressure area of the ongoing weather system should be in the Great Lakes region Friday evening.
SHORT TERM (Now through Friday night): 500mb ridging overhead and high pressure off to the east continue to provide plenty of subsidence with hot and dry conditions across Deep South Texas again this afternoon. South winds will decrease overnight, but will remain moderate ahead of an approaching cold front on Friday. Friday, the (very dry) cold front will move through in the afternoon with winds veering to the north and eventually northeast late in the evening.
A cold front will move across the region AFT 234/02Z, with winds switching out of the northwest BTWN 15 to 25 kts with gusts up to 30 kts. This is where the High Wind Warning will be located.
An upper level trough over the region this weekend will keep temperatures near average with highs in the upper 20s and 30s. Upper troughing will dominate the region through mid week. The trough will begin to exit on Thursday and temperatures will reflect that as they pop back into the 40s.
Cassell /ISSUED 430 AM MST Thu Feb 23 2017/ The southwest and north-central MT region will continue to reside in a fairly weak flow pattern with a broad upper trough to our west over Washington and Oregon. A well-defined upper low over far south-central Idaho this morning will move east-southeast away from the area as well over the next 24 hours.
Around 09-10Z, MVFR cigs will develop at airports as low level moisture increases ahead of the approaching upper trough.
A cold front pushes through SE Texas beginning in the late Friday morning for the northern portions of the forecast area. The cold front will eventually clear the coast by early Friday evening. Unseasonably warm temperatures will continue until the next cold front moves through the area during the day tomorrow.
GFS hints that we could see a few showers in our northwest counties with a weak pre-frontal trof Friday morning, and included some slight chances for showers in a few of our southwest Illinois counties before 18z. Ahead of the cold front, we will have one more incredibly warm day with temperatures around 20 degrees above seasonal normals. Dry weather and much cooler temperatures can be expected behind the front as high pressure builds westward into our region.
With light northeasterly flow overnight, KTLH and KVLD have the highest risk of IFR conditions with some potential for fog and low ceilings.
Upper air analysis this morning showed nearly zonal flow across the southwestern US with a trough over the northern Rockies. At the surface, high pressure was centered over the Gulf and winds were from the southeast to southwest. The upper level trough over the northern Rockies will swing down through the southern plains. A cold front will move through north Texas tonight and our CWA Friday morning. Temperatures will be cooler behind the front, but still above normal.
Drier and cooler conditions are forecast through Friday with chilly overnight temperatures. Northwesterly flow aloft will trend westerly as a weak ridge of high pressure noses into the region today into Friday. Friday night temperatures will likely be several degrees warmer than Thursday night, especially to the north of Monterey as mid and high level clouds build in ahead of the next storm system.
With light winds overnight, some of the high-res model guidance is continuing to show a chance of some MVFR or perhaps IFR visibility restrictions for the I-35 sites. Northwesterly winds should arrive by tomorrow morning as a dry cold front moves through the region. There is a chance patchy/shallow fog could form along and east of I-35 between 06Z-11Z Friday ahead of a cold front. Later this evening the dry-line is forecast to move back to the west while a Pacific cold front moves from west Texas into the Rio Grande and Edwards Plateau areas.
Low pressure broadly centered east of the central FL coast has slowly intensified to a sub 1003mb center while drawing away over the open Atlc.
Forecast updated for slightly cooler temperatures otherwise forecast on track. Temperatures this morning are running a degree or two cooler than forecast suggesting snow will be the operative Ptype for this event and in fact. snow is underway at Valentine and Ainsworth with temperatures below freezing. The snow is sticking to the roads in Rushville where temperatures are in the mid 20s but not at Pine Ridge where it is 30F.
336 PM CST Thu Feb 23 2017 Above normal temperatures will continue until a cold front moves through Southeast Texas tomorrow.
1144 AM MST Thu Feb 23 2017 Stand up cold front is sweeping across western Colorado this morning being driven by a circulation over S. Temperatures will cool significantly behind the front however with highs today forecast to be 15 to 20 degrees cooler than 24 hours ago. Highs on Friday may even be a few degrees cooler yet.
950 AM PST Thu Feb 23 2017 A cooler and continued unsettled pattern will descend over the region for remainder of the week.
149 PM CST Thu Feb 23 2017 A vigorous trough over the Rockies will emerge over the Central Plains of Nebraska tonight. Strong forcing for ascent will spread downstream across Kansas where a few strong to severe storms may develop across portions of Central KS early this evening as an area of low pressure translates northeast across the area. A cold front will follow, spreading south and east across the forecast area tonight with breezy northwest winds in it's wake. An area of high pressure at the sfc is progged to sprawl across the southern and central plains states on Sat with slowly moderating temperatures and light winds.
Surface wise, a low pressure system is located along the east central coast of the Florida peninsula, with a trough draped westward into the Gulf of Mexico.
Latest water vapor and RAP upper level analysis indicate ridge axis building NE across the area this afternoon ahead of a deepening Plains trough. This ridge axis will further amplify through the day Friday as it shifts east of the area ahead of our next frontal system Friday night. At the surface, ridge of high pressure noses SW from central North Carolina into central Alabama and Mississippi.
A cold front will move through the area tonight and much cooler (well, I guess I should say near- normal) temperatures to the area for tomorrow. Despite the cooler temperatures, we still can see some gusty northwest/north winds and some low humidity again.
Cold front will move through the OK TAF sites after midnight with winds switching to westerly. Cold front will move through late in the prevailing period with winds becoming northwesterly behind the front. Fire weather will remain a concern into Friday behind the cold front, with drier air and breezy conditions. The low level thermal ridge will nose right up into eastern OK this afternoon ahead of a cold front. For this reason, the high temp forecast will be a few degrees higher than yesterday, which overachieved in some spots as well. A cold front will push thru the region tonight into Friday, bringing an abrupt change to the unseasonable warmth.
Breaks in the clouds across the Kootenai region of northwest Montana will allow some patchy freezing fog to develop tonight through Friday morning as well, with travelers impacted by visibility suddenly dropping in spots.
Rain chances will increase later this afternoon and especially tonight as low pressure develops in the Plains. Severe weather remains a possibility Friday afternoon and evening as a cold front moves through the area. High on Friday will be in the middle 60s to the lower 70s in spots, then plummet back to seasonable levels for the weekend along with a chance for snow showers. Expect little more than wind shift/slightly cooler yet still well above normal temps.
225 PM MST Thu Feb 23 2017 Upper low is spinning over south central WY, pushing snow north into the CWA. Expecting another 3-8 inches of snow overnight in the warned areas, with the higher amounts across south central SD.
A long-wave upper level trough occupies the western half of CONUS. This trough has spread cooler air from the north over most of the West, including Montana. The trough will eventually spread across all of CONUS, keeping the cooler air in place for our region. The existence of general low pressure and micro disturbances will tend to produce low stratus and isolated light snow showers.
A cold front will move across the area late tonight and early Friday, shifting winds to the northwest. (Friday through Thursday) Expect cooler temperatures and gusty northwest winds Friday behind a cold front.
A weak Pacific cold front will traverse southeast across our CWA later tonight. A cooler and even drier air mass will fill in behind the front as overnight lows moderate back toward more seasonal values. Despite cooler temperatures that normally help to mitigate fire weather concerns, drier air coupled with another afternoon of strong west-northwesterly surface winds will leave our area vulnerable to wild fires as RH values drop to 10 to 15 percent Friday afternoon.
Medium to High Strong low pressure will approach from the southwest tonight, then slide by just to the south on Friday. Widespread precipitation is expected, ranging from rain in the southeast, to snow and freezing rain northwest.
A negatively tilted upper- level trough situated over the central Rockies will expand and approach the Missouri River Valley beginning today through Friday. The favored regions for precipitation will remain north of the warm front, generally for areas north of the I-70 corridor.
243 PM EST Thu Feb 23 2017 Low pressure centered in the Bahamas will be moving farther off the Southeast Coast Friday.
Issued by National Weather Service Key West FL 246 PM EST Thu Feb 23 2017 Currently - A broad low pressure system centered east of the Florida peninsula is resulting in gentle to moderate mostly west breezes. Shower activity has trended downwards through the afternoon hours as surface dew point depressions increased and drier air continues to move in through the lower to mid levels.
An upper level low will be moving acrs southern WY today and into NE this evening. The other concern for today is the high fire danger. As the upper trof moves acrs the state today, snow is expected in the mountain areas, with a few inches of accumulation along the Continental Divide, and maybe some light accumulations over the higher elevations of the eastern mtns. With the upper trof moving east of the area tonight, a front will move southward into southeast CO.
Winds are expected to become light and variable during the early morning hours as high pressure builds southeast from the Canadian Province of Alberta. - Moldan /ISSUED 430 AM MST Thu Feb 23 2017/ The southwest and north-central MT region will continue to reside in a fairly weak flow pattern with a broad upper trough to our west over Washington and Oregon. A well-defined upper low over far south-central Idaho this morning will move east-southeast away from the area as well over the next 24 hours.
To the west this airmass expands out over the Pacific Northwest and off the coast in a large trough. The PACNW trough connects to this arctic airmass over central Albert a through southern British Columbia.