Aikyam-Lab/Synoptic-Bench huggingface dataset:
Plan to hang on to the high wind watch until aftn package. Plan to hang on to the high wind watch until aftn package.
438 AM CST Tue Jan 10 2017 Temperatures are running some 25-30 degrees warmer or more in some cases this morning compared to 24 hours ago. A quick analysis of the low levels reveals the culprit as increasing southerly winds /aided by a 50kt LLJ at H850/ have led to rapid moisture return area wide with dew points now in the mid 50s at nearly all sites.
Otherwise, a warmer day is in store for today and Wednesday as H85 winds begin to veer out of the SW bringing drier and warmer off the mountains and down to the surface.
513 AM CST Tue Jan 10 2017 A complicated weather picture has developed overnight with strengthening low pressure over southeast Nebraska and a variety of surface fronts at various points near the low. An strong inverted trough axis extends north from the low center into Minnesota and northwest Ontario. Light freezing drizzle was still occurring in a few locations including International Falls and Hibbing. Some of the BR reports from area AWOS sites with lower ceilings are likely freezing drizzle as well. Another trough of low pressure will rotate through the western Great Lakes on Wednesday yielding another round of accumulating snow. Continuing cold air advection aloft and the deepening trough will yield an area of falling heights and frontogenesis over central Minnesota and northwest Wisconsin.
An upper level low near the coast will push a stronger band into central OR late this morning.
644 AM EST Tue Jan 10 2017 A coastal trough will brush the region today into tonight.
Rain and breezy conditions will develop across the area today as a strong low pressure system pushes into the Great Lakes. A brief break will occur tonight before another frontal zone moves into the region and stalls to our south before moving back north later in the week as a warm front. Will have to watch to see how far north the warmer air gets.
In advance of an approaching low pressure system. could see a few isolated showers move into far western locations late in the day as the low pressure system advances towards the region. Chattanooga Airport, TN 51 47 63 52 / 10 70 60 10 Knoxville McGhee Tyson Airport, TN 47 45 60 49 / 10 80 60 20 Oak Ridge, TN 49 45 61 51 / 10 80 60 20 Tri Cities Airport, TN 46 40 54 43 / 10 80 70 20 TN.
A mix of rain and snow will continue Tuesday mainly across northern Nevada, then a little cooler Tuesday night into Wednesday with more widespread snow across northern and central Nevada.
Ridging aloft will continue to support a mild airmass over the region on Wednesday, with well above normal temperatures expected again.
224 PM CST Tue Nov 15 2016 Mild and dry weather conditions will persist on Wed-Thu before a cold front arrives ushering in more seasonable air and a slight chance for light precipitation late Thu.
500mb ridge across northern Mexico and the southwest United States will provide subsidence across the Rio Grande valley and the northern ranchlands this afternoon into this evening. Dewpoint temperatures forecast to fall into the low to mid 50s this afternoon, so have leaned in that range for subsequent low temperatures tonight. Models seem to be underestimating the lows tonight, only falling into the lower 60s, so have undercut most numbers by a cat or two and set lows in the mid to upper 50s.
With some clouds persisting into tonight will see low temperatures a few degrees warmer than this morning with lows Wednesday morning in the mid to upper 40s inland and low to mid 50s along the coast.
256 PM CST Tue Nov 15 2016 Temperatures have warmed well above normal this afternoon under the influence of ridging aloft, with highs on target to reach well into the 70s and lower 80s across the area. On Wednesday, a pattern shift will begin to occur as the upper ridge axis shifts to the east in response to a trough deepening over the Pacific Northwest. Flow aloft will transition to southwesterly, and though the thermal ridge will shift eastward, highs Wednesday will be similar to today, in the 70s and 80s, roughly 10-15 degrees above normal.
310 PM CST Tue Nov 15 2016 Weak high pressure will continue to slide east of the area from this evening into the overnight period. As this happens, a weak cold front/wind shift line will move into northern and perhaps central Missouri before stalling. Lows tonight are expected to dip into the lower to middle 40s under mainly clear skies.
257 PM CST Tue Nov 15 2016 18Z surface data has high pressure from the western Great Lakes into the lower Mississippi Valley. Another cold front ran from northern Minnesota into southern South Dakota. Quiet and dry conditions will be seen from late this afternoon through midnight as the cold front moves through the area. After midnight, high pressure will build into the area.
Changes are coming as a large upper trough is moving onshore in the Pacific NW. Energy moving into the upper ridge this afternoon has triggered precipitation to break out over western and central Montana that will move into the CWA this evening, exiting across the northeast zones after midnight. Temperatures will be well above freezing tonight, so freezing precipitation is not expected.
surface pressure change chart showed Pacific cold front along the Cascades at 15Z. Cold front crossing southeast Oregon this afternoon and southwest Idaho this evening. Upper trough moving into the Pac NW will push a cold front through southeast Oregon and southwest Idaho today. Trailing upper trough will keep a chance of snow showers in the mountains tonight into Wednesday though little accumulation is expected.
High pressure will then bring much warmer temperatures late this week. Weak high pressure remains ridged across the forecast area this afternoon with sunny skies and temperatures running in the mid to upper 50s under light southwest flow. Tonight expect increasing cloudiness ahead of an approaching weak cold front. Light south to southwesterly flow combined with the increasing clouds will hold temperatures a bit warmer than we saw Tuesday morning with lows only slipping back to around 40 degrees. A minority of the NCAR reflectivity ensembles show the widely scattered showers shifting across the forecast area leading to the low confidence and low POP for any measurable rain.
1231 PM EST Tue Nov 15 2016 Low pressure over the Upper Great Lakes will move east and an associated weak cold front will move across the area tonight.
239 PM EST Tue Nov 15 2016 A weak trough will move across the area on Wednesday.
115 PM CST Tue Nov 15 2016 An occluding cold front has made its passage, is now in the frontolysis stage to our east, as our eyes refocus upon another cold front now seen dropping down into Iowa. H5 heights will rise about 100 meters by this time tmrw, as the upper ridge builds broadly across the lower and middle Mississippi river valley. This will effectively transform the aforementioned cold front into a warm front as it drops further south into the ridge.
Main pcpn should come with the cold front as it passes through eastern Oregon late today and western Idaho this evening.
So with an overall light wind regime persisting with an accompanying increase in surface ridging during normal diurnally favored fog window, expect fog to reform tonight and linger into Wednesday morning.
Cooler and slightly drier weather is then expected for the remainder of the work week with a chance of showers mainly during the afternoon hours. The cool pattern will moderate by the weekend as moisture moves in from the southwest ahead of a deep offshore trough. Strong cold front making its way toward the Cascades this morning. 18Z TAFS: Warm frontal precipitation is draped across north Idaho and eastern WA from Bonner's Ferry to just West of Walla Walla and will continue to push east and exit the region after 21z. Then we can expect isolated showers associated with the passing cold front between 20-00z.
920 AM PST Tue Nov 15 2016 Cooler temperatures for the coast today but still warm inland. Much cooler with low clouds and fog for Wednesday with gusty west winds in the mountains and deserts as cold front approaches.
1008 AM MST Tue Nov 15 2016 Upper ridge over the area today will bring another unseasonably warm day across southern Colorado. but winds stay on the light side underneath the upper ridge. particularly along the lower eastern slopes of the southeast mountains as enhanced westerly drainage winds into sfc lee trof helps keep min temperatures up. Many southeastern Colorado sites are projected to experience mid-November temperatures rising into the lower 80s by Wednesday afternoon(quite warm for southern Colorado in mid- November).
251 PM EST Tue Nov 15 2016 An upper level trough will cross the region tonight, followed by an amplified upper level ridge that will expand east toward the eastern US for the latter half of the week. A weakening, dry cold front/trough, associated with the upper trough axis, currently approaching the Tenn Valley may bring some scattered clouds into the western piedmont late tonight and stir winds a little, but this will have little impact on lows, which should reach the upper 30s to lower 40s for areas. In the wake of the upper trough crossing the area tonight, height rises will commence in earnest on Wednesday as the large scale flow amplifies and ridging build across the southern US.
150 PM EST Tue Nov 15 2016 High pressure builds into the area tonight before a weak disturbance moves through Wednesday.
Despite full sunshine heating the dry airmass, light W/NW winds will keep temperatures today a couple of degrees cooler than yesterday. A weak cold front. Lows tonight around 40 again as another weak cold front drags into the area late in the night. Winds will go through a series of gentle shifts as well over the upcoming day with WNW shifting to SW ahead of the next front/trough. Generally clear skies other than some patchy morning fog today in relatively moist low level air mass with good radiational cooling conditions due to clear skies aloft behind the cold front.
TFJ Upper ridge over the region will push east today as trof off the west coast digs toward northern California. Southwest flow out of the trof will continue to spread moisture northward toward Montana maintaining cloudy skies today. Energy in the west coast trof is expected to split as it moves onshore today.
The temperature at DIA is 74 F right now, about 5 F warmer then it was yesterday at this time. Farther east, there is a weak surge noted across the plains so east of Denver temperatures should hold a few degrees cooler. As an upper trough develops over the Pacific Northwest, southwesterly flow aloft across Colorado will bring one last day of abnormally warm temperatures to the state. High temperatures across the plains are expected to be in the mid to upper 70s, some 20 to 25 degrees warmer than normal, and near record values for the date. Skies will be mostly sunny, although by the end of the day we may see an increase in high level clouds, in advance of the approaching trough.
A formidable mid and upper level trough extending from the Florida panhandle southwestward into the Gulf of Mexico will drive east southeastward and across the Sunshine State early Wednesday morning, with high pressure governing our sensible weather elements for the balance of this week.
349 PM CST Tue Nov 15 2016 (Tonight and Wednesday) Temperatures today have climbed 40 plus degrees from the cool morning lows, and into the lower to mid 80s this afternoon. An upper level ridge to our west will shift east across Texas tonight and Wednesday. Warm and dry conditions are in store again Wednesday, with full sunshine and upper level ridging over our area. With highs expected to be in the lower to mid 80s, the record highs at Abilene and San Angelo will be in jeopardy. Abilene record high 83 degrees, set in 2013 San Angelo record high 83 degrees, set in 1921 With lee trough developing to our west and increased surface pressure gradient, breezy conditions will develop as south winds increase.
Temperatures are warming steadily so far, and most areas have reached the lower to mid 70s with several more degrees yet to go before afternoon highs are achieved. /issued 514 AM CST Tue Nov 15 2016/ Moisture ahead of a cold front will allow for MVFR/IFR visibilities across mainly the SHV/LFK terminal sites through 15/15Z. High pressure behind the front to bring VFR conditions through the remainder of the forecast period.
346 PM EST Tue Nov 15 2016 A weak trough will move across the area on Wednesday.
310 PM CST Tue Nov 15 2016 A cold front was moving across the Mid-State early this afternoon, and at 2 pm was just west of Nashville.
1157 AM EST Tue Nov 15 2016 Hydro A weak area of low pressure moving through the state today may generate a brief shower north of I-96 this afternoon.
Warm front lifted north through the forecast area overnight and now a cold front is pushing through the forecast area. Snow levels will begin around 6000 to 8000 feet today but will be lowering behind the cold front eventually dropping to 2500 to 3000 feet overnight.
VFR conditions expected through this afternoon and evening with high pressure building behind weak boundary that moved through this morning. Upper level ridging will build into the region through the mid week.
Freezing levels will drop sharply through the day and into the night, lowering by 2000-3000 feet from this morning through this evening.
Warm front lifted north through the forecast area overnight and now a cold front is pushing through the forecast area. Snow levels will begin around 6000 to 8000 feet today but will be lowering behind the cold front eventually dropping to 2500 to 3000 feet overnight. W-NW winds will increase behind the cold front with gusts to 20-25 knots.
Despite some light to occasionally moderate convection over East and Northeast Mississippi, VFR flight categories are prevailing at TAF sites as a trough swings east through the region. Some chances for rain will linger across the eastern half of the forecast area through the course of the afternoon, but will come to an end as we head into the late afternoon as the trough clears the region. Otherwise, with a mix of clouds and sun across the area today, highs this afternoon will top out in the low and middle 70s.
1247 PM EST Tue Nov 15 2016 Low pressure over the Upper Great Lakes will move east and an associated weak cold front will move across the area tonight.
245 PM CST Tue Nov 15 2016 Weak cold advection and drier air overnight will allow for cooler temperatures overnight but minimums still expected a few degree either side of freezing and above average for this time of year.
319 PM EST Tue Nov 15 2016 High pressure will prevail through late week.
238 PM CST Tue Nov 15 2016 Latest water vapor imagery shows the upper trough axis moving east across the forecast area, as a broad upper ridge builds across much of CONUS west of the MS River. Meanwhile, the cold front extends from the eastern Great Lakes southward into western TN and central MS. Skies will continue to clear during the overnight hours as upper level ridging builds in once again across the area. The short term period will be dominated by high pressure at the surface and a strong upper ridging building across the area. Above normal temperatures will return on Wednesday, with temps rising into the low to mid 70s.
Cooler and slightly drier weather is then expected for the remainder of the work week with a chance of showers mainly during the afternoon hours. The cool pattern will moderate by the weekend as moisture moves in from the southwest ahead of a deep offshore trough. Strong cold front making its way toward the Cascades this morning. 12Z TAFS: A shield of precipitation associated with a warm front will bring a few hours of precipitation to most of the TAF sites through 15z or so. The precip will shift north of the sites by mid- morning, with the focus then changing to winds associated with a cold front.
259 PM MST Tue Nov 15 2016 Upper ridge axis will move across the central High Plains tonight with falling heights on Wednesday ahead of the system entering the Great Basin.
Issued by National Weather Service Pittsburgh PA 149 PM EST Tue Nov 15 2016 High pressure will maintain dry conditions and keep temperatures warmer than average. The exception will be over the far eastern zones as low pressure helps spread showers through the central state. A weak front with limited moisture is slated to cross the region Wednesday and provide scattered showers; but building high pressure behind the front will cause precipitation to quickly diminish and bring dry and moderating temperatures the rest of the week. A broad upper level low over the region helping to induce a coastal low will spread showers over the eastern zones tonight late this evening through early tonight. Otherwise, high pressure should maintain benign weather and temperatures above normal values.
Some chances for rain will linger across the eastern half of the forecast area through the course of the afternoon, but will come to an end as we head into the late afternoon as the trough clears the region. Otherwise, with a mix of clouds and sun across the area today, highs this afternoon will top out in the low and middle 70s.
A change in the weather pattern will bring windy conditions to the region Wednesday followed by cooler conditions for the remainder of the week.
Significant changes still on track for our region for the latter half of the work week as an upper trough pushes across the Rockies. Timing has remained fairly consistent with an initial push of cooler air late tonight.
The mid/upper-level trough over the east coast will continue to pivot into the western Atlantic through Wednesday as a ridge builds over the central U. At the surface, high pressure will build over the southeast through tonight and tomorrow, keeping a northerly wind flow in place across the forecast area.
Northwest winds behind the wave remain breezy this afternoon, then decrease towards sunset as the surface quickly ridge slips east through the Plains. All in all, looks like a quiet night with seasonally mild lows in the lower 30s to lower 40s. Highs are expected in the lower 60s in southwest Minnesota to near 70 in south central and Mo Valley.
We will also be met with rising heights and therefore trended temperatures warmer than today given the 850MB temps will be on the rise. Wednesday night we once again see high pressure in control and upper level ridge axis building across the region. A weak cold front is located across western/central KY this afternoon and this is leading to low to mid deck of clouds across portions of the region.
112 PM EST Tue Nov 15 2016 Cyclonic flow aloft will prevail over the Carolinas today, in association with a broad upper level trough over the eastern United States. Northwest flow aloft will develop late tonight and Wednesday as an amplified upper level ridge over the Rockies expands east across the Central Plains toward the Mississippi river valley. At the surface, high pressure centered over the Lower Ms Valley/Northern Gulf Coast States will shift east over the area.
1250 PM EST Tue Nov 15 2016 Aviation A weak area of low pressure moving through the state today may generate a brief shower north of I-96 this afternoon.
312 PM CST Tue Nov 15 2016 Water vapor imagery showing quick zonal flow aloft over the Northern and Central Rockies with upper ridge over southern Arizona. Despite the weak winds, 12Z sampled 850mb temperatures of 11C at TOP, 16C at LBF, and 18C at DDC signify the very warm mid-November airmass in place and 20Z surface temperatures in the lower 70s are common in the area. Upper ridge shifts east across Texas tonight into Wednesday as a trough enter the Great Basin. Mixing depths will be the main challenge, but feel fairly comfortable to go on the high end of guidance with highs in the mid to upper 70s.
The upper level trough continues to move across the southeastern states with subsidence across the forecast area. but quickly clearing out after the moisture has been squeezed out of the lower layers toward sunrise.
Cooler and slightly drier weather is then expected for the remainder of the work week with a chance of showers mainly during the afternoon hours. The cool pattern will moderate by the weekend as moisture moves in from the southwest ahead of a deep offshore trough. Meanwhile breezy winds have picked up near and behind the front with gusts of 30 to 40 mph in the low lands. 18Z TAFS: Warm frontal precipitation is draped across north Idaho and eastern WA from Bonner's Ferry to just West of Walla Walla and will continue to push east and exit the region after 21z. Then we can expect isolated showers associated with the passing cold front between 20-00z.
146 PM MST Tue Nov 15 2016 Upper ridge axis will move across the central High Plains tonight with falling heights on Wednesday ahead of the system entering the Great Basin.
Much cooler conditions with low clouds in a deepening marine layer on Wednesday. Winds will increase across the mountains and deserts as a cold front approaches Wednesday afternoon and evening.
343 PM CST Tue Nov 15 2016 An upper level ridge will migrate eastward over the southern high plains tonight. Light winds will persist through much of Wednesday morning, but with the ridge axis shifting to the east of the region and southwesterly upper level flow replacing it, a lee trough will develop across eastern New Mexico and will result in increasing southwest winds. High temperatures near today's highs and near the warmer end of a narrow MOS range look reasonable.
101 PM MST Tue Nov 15 2016 Upper ridge axis will move across the central High Plains tonight with falling heights on Wednesday ahead of the system entering the Great Basin.
333 AM EDT SAT APR 16 2016 HIGH PRESSURE WILL REMAIN OVER NORTHERN NEW ENGLAND THROUGH SUNDAY.
HIGH PRESSURE WILL BRING DRY AND WARMER WEATHER CONDITIONS TODAY THROUGH SUNDAY.
115 AM EDT SAT APR 16 2016 HIGH PRESSURE ACROSS THE REGION AT THE SURFACE AND ALOFT WILL RESULT IN CLEAR SKIES AND MODERATING TEMPERATURES THROUGH THE WEEKEND. HAVE RIDGING AT THE SURFACE AND ALOFT ACROSS THE REGION. HIGH PRESSURE.
351 AM EDT SAT APR 16 2016 HIGH PRESSURE WILL REMAIN IN CONTROL OF THE WEATHER PATTERN OVER THE NEXT SEVERAL DAYS.
An automated gauge in the Cimarron National Grassland near the Highway 51/27 intersection had 4. As long as the upper low continues to hang out over western/central New Mexico, the dry intrusion layer should not expand northeastward very quickly. By late tonight, the high resolution and global model runs finally show a northeastward push of the dry intrusion air stream into southwest Kansas, effectively shifting the moisture transport (and subsequent excessive rainfall zone) farther east into central/south central Kansas. That being said, another jet streak/subsynoptic perturbation at the base of the upper low will eject northeastward into the Texas Panhandle, and this may act to pull the low level convergence axis back to the west again ever so slightly.
334 AM CDT SAT APR 16 2016 UPPER LEVEL LOW AND SFC FRONTAL BOUNDARY THAT WAS IMPACTING THE AREA HAS ALL BUT DISSIPATED WHILE UPPER HIGH PRESSURE IS DEVELOPING OVER THE REGION. THIS RIDGE EXTENDS FROM THE GULF TO THE GREAT LAKES WHILE UPPER LOW CLOSES OFF OVER THE ROCKIES. THIS RIDGE WILL PROVIDE A MORE STABLE ATMOSPHERE THAN LAST WEEK AND AND THUS MINIMAL CONVECTION OVER THE AREA. STILL ONLY TALKING AROUND 20 TO 30 PERCENT FOR THE HIGHEST COVERAGE AND THATS RIGHT ALONG THE ATCHAFALAYA BASIN. UPPER LEVEL RIDGE OVER THE AREA WILL SUPPRESS SOUTH THE FIRST HALF OF THIS WEEK AS THE CUTOFF LOW TO THE WEST GRADUALLY SHIFTS EAST ACROSS THE CENTRAL PLAINS.
WARMING AND DRYING THROUGH SUNDAY AS UPPER RIDGE ALONG THE COAST SHIFTS INLAND AND INTENSIFIES. NORTHERLY FLOW ALOFT TODAY WILL BECOME NELY FOR SEVERAL DAYS BEGINNING SUNDAY AS UPPER LOW IN COLORADO EXPANDS.
258 AM EDT SAT APR 16 2016 DRY HIGH PRESSURE WILL BUILD SOUTHWARD OVER THE REGION THROUGH THE WEEKEND.
1252 AM CDT SAT APR 16 2016 MAIN CONCERNS THIS FORECAST CONTINUE TO BE WINDS AND THE LOW RH VALUES THIS EVENING.