Aikyam-Lab/Synoptic-Bench huggingface dataset:
1052 AM MDT Mon Jun 5 2017 Current surface analysis has an area of low pressure over southern MT, with frontal boundary stretching southeast into central SD. Cold front stretches south from the low through western WY into UT. Upper level analysis shows slow moving low over the Southern Plains, with positively tilted ridge extending from the Southern Rockies to the northern high plains. It will be another warm day again today in advance of the slowly approaching cold front. A cold front will move through the area this afternoon through tonight with increasing chances for TSRA. The cold front will slowly move through south central SD on Tuesday. Highs will be cooler on Tuesday behind the front, with readings in the 70s and lower 80s.
1120 AM EDT Mon Jun 5 2017 Low pressure over the eastern Great Lakes will move southeast today. A slow moving cold front will cross the local area tonight.
1044 AM EDT Mon Jun 5 2017 Hydro Cooler and mainly dry weather can be expected through midweek as Canadian high pressure builds south into the western Great Lakes Region. It will be breezy today and Tuesday due to a low pressure system over the eastern Great Lakes. Low clouds are becoming more widespread early this morning as cooler air mass oozes south via north-northeast winds. Some isolated showers may develop during peak heating east of highway 131 as the upper low and cold pool drop south down Lake Huron. Main impacts from the upper low over the eastern Great Lakes Region on Tuesday will be over the eastern parts of lwr Michigan. Clouds should be more extensive around LAN/JXN with cooler high temperatures while areas west of Highway 131 will be partly sunny to mostly sunny and a bit warmer.
High pressure will bring warm and dry conditions during the work week. An upper trof is lifting through MT into srn Canada this morning. The associated cold front that pushed into UT overnight has stalled across swrn to east central UT. Short wave ridging is pushing into the Great Basin. Warm dry conditions will persist south of the boundary today with a cooler more stable airmass to its north. The short wave ridge shifts east of the CWA tomorrow and the axis of the 700 mb thermal ridge lifts north thru the state. Expect another round of high based convection again over the mtns as well as over the west associated with the thermal ridge axis.
743 AM EDT Mon Jun 5 2017 Aviation Cooler and mainly dry weather can be expected through midweek as Canadian high pressure builds south into the western Great Lakes Region. It will be breezy today and Tuesday due to a low pressure system over the eastern Great Lakes. Low clouds are becoming more widespread early this morning as cooler air mass oozes south via north-northeast winds. Some isolated showers may develop during peak heating east of highway 131 as the upper low and cold pool drop south down Lake Huron. Main impacts from the upper low over the eastern Great Lakes Region on Tuesday will be over the eastern parts of lwr Michigan. Clouds should be more extensive around LAN/JXN with cooler high temperatures while areas west of Highway 131 will be partly sunny to mostly sunny and a bit warmer.
While one centralized trough is moving through at the surface. GAH PREVIOUS SHORT TERM DISCUSSION: Initial flow aloft consists of southerly winds from the base of a digging trough approaching Northeast Montana.
Ridging continues to build into the area this morning. Expect mostly sunny skies today with cooler temperatures.
05/12Z upper air plots depicted a 588 dm high centered near KDUG with a ridge axis extending northeastward into the northern CONUS plains.
939 AM MST Mon Jun 5 2017 Little change in the weather pattern is expected through mid week as a strong high pressure system produces mostly clear, dry, and hot weather.
In the middle to upper levels (700-200 mb), latest available satelitte imagery overlaid with streamline analysis as of 900 am depicts a strong middle and upper cyclone migrating southeastwards across NE Texas. A 50-75 knot jet at 250 mb rounds the base of the trough from the SW Gulf Coast northeastwards then decelerates over the Eastern Gulf of Mexico, becoming increasingly diffluent over much of the Florida Peninsula and the Florida Keys. Northeast of that, broad surface ridging remains across the Florida Peninsula and the Western Atlantic. Moisture has increased markedly in the lower to mid levels, with columnar PWAT at 2.
Upper low pressure will slowly move across the area today. High pressure builds into the area Tuesday to dry things out. Today Through Tuesday Night An upper level low pressure system will move across Arkansas today and tonight. This should be the end of the rainy pattern as the low pressure area will move off to the southeast. An upper ridge over the Rockies today will build eastward on Tuesday. Showers and thunderstorms will be likely today as an area of low pressure slowly moves through the area. A cold front then moves through on Tuesday followed by high pressure which will bring cooler and drier air. The cooler air will be noticed Tuesday night.
Along with a bit better forcing later this afternoon ahead of an approaching cold front and 0-6kt bulk shear values in the 20-30kt range, we could see a few thunderstorms develop. Chattanooga Airport, TN 79 66 81 59 / 90 60 30 10 Knoxville McGhee Tyson Airport, TN 77 63 78 58 / 90 70 20 10 Oak Ridge, TN 75 64 78 58 / 90 50 20 10 Tri Cities Airport, TN 75 60 75 54 / 90 50 30 10.
646 AM CDT Mon Jun 5 2017 H5 pattern this morning had a trough of low pressure extending from the Ozarks southwest into Texas. West of the ridge, a trough of low pressure was situated from the British Columbia coast south into northern California. At the surface, high pressure was situated over eastern Colorado into western Kansas and southwestern Nebraska. With high pressure dominating across the high plains his morning, skies were mainly clear and winds were light. High pressure will retreat east today into southeastern Kansas by late afternoon. Deep layer shear is on the order of 10 to 20 KTS along the trough later today so support for supercell thunderstorms is weak at best. Showers and thunderstorms arrive late Tuesday as a low pressure system over southern Canada drags a cold front across the northern Plains.
930 AM EDT Mon Jun 5 2017 Periodic shower and thunderstorm chances are expected for the first half of the week as upper low pressure settles over the region. The NCAR ensemble, 4 km NMM/ARW, and HRRR all show good agreement in a lull in precipitation later in the morning followed by convection developing along the cold front early this afternoon and tracking to the southeast. The short term period will feature the further digging of a very cold upper low over the Eastern CONUS with the latest solutions indicating the cutoff center over the NY/PA border by Tuesday.
725 AM EDT Mon Jun 5 2017 Low pressure across eastern Lake Erie will take a cold front south across the area today. A trough will linger across the eastern Great Lakes though as an upper low remains nearly stationary through mid week.
1034 AM EDT Mon Jun 5 2017 A cold front dropping south across Ohio will be the focus for scattered showers and thunderstorms today.
1019 AM CDT Mon Jun 5 2017 A weak cold front is located approximately from Macomb to Danville this morning, separating cooler and drier air to the north from warmer and moister air to the south. 00Z models have trended warmer with highs today in the 85-90F range with mostly sunny skies. Fair weather expected tonight as front pushes south across KY and weak Canadian high pressure of 1020 mb settles southward into the upper MS river valley. NNE winds bring cooler lows tonight in the mid to upper 50s, with Lawrenceville near 60F.
Highs today should range from the low to mid 70s over south central KY to upper 70s to lower 80s over northern KY/southern IN. After a relative midday lull, the surface cold front associated with the closed low over the Great Lakes will drop south into the region during the mid/late afternoon. With highs reaching the lower 80s, CAPE cranks up near 2000 J/kg and downdraft CAPE over 700, which would support at least a few pulse storms with marginal severe wind gusts possible. Otherwise cooler and drier air spills in for the balance of tonight and Tuesday, with below normal temps and decreasing humidity.
An area of low pressure will track across Southern Virginia and Northern North Carolina this afternoon and track out to sea this evening. An upper level low pressure area will then spin over the northeastern U.
With light winds, and very dry air in place, just took lows down a few degrees in a couple of the favored cooler valley locations. Most areas will drop below freezing for a few hours.
348 AM EST Thu Jan 4 2018 Another re-enforcing cold front will move through the area today. Arctic high pressure will build into the region and remain in control through the weekend.
Most locations were seeing the temperature fall a bit slower than forecast, so updated the Point Forecast Matrix and the Hard Freeze/Freeze Warning to account for the expected shorter period with temperatures at freezing or below, however the forecast lows were not adjusted since there should be a fairly steady fall overnight through shortly after sunrise.
QPF looks to be rather light, with most models showing a few hundredths at best, but there is consistency in area/timing, so have added a stripe of likely pops to areas from the Buffalo Ridge into the Spencer/Storm Lake area this afternoon.
238 AM MST Thu Jan 4 2018 High pressure dominating the weather across southeast Wyoming and Nebraska Panhandle the next few days.
340 AM EST Thu Jan 4 2018 08z sfc analysis shows low pressure starting to deepen off the Carolina coast with a reinforcing shot of arctic air moving this way in the form of inbound high pressure. A cold front is crossing eastern Kentucky early this morning bringing a band of snow showers of varying intensity with a couple of tenths of an inch of accumulation expected for most places. The higher terrain will pick up more as upslope in the front's wake continue the scattered snow showers into the daylight hours. The models are in good agreement aloft with the evolution of the Great Lakes and Ohio Valley trough through the end of the work week.
214 AM MST Thu Jan 4 2018 Water vapor shows upper ridge over the Northern Rockies with northwest flow through the Northern Plains. At the surface, trof is located over the western Dakotas. Upper ridge axis to our west will continue to nudge east and bring even warmer temps to the region for today, with plenty of 40s from northeastern WY through the Black Hills into southwestern SD. A short wave embedded in the northwest flow aloft will back a cold front through western SD tonight, with the western edge of the colder air mass banking up against the Black Hills.
Northwest flow aloft persists with mid and high cloud over western and central portions of Kansas, helping keep temps a bit warmer in western and southern local areas. Backed low-level winds ahead of this low aid in fairly strong warm-air advection over the cold surface airmass, with 925mb temps around 5C warmer than Wednesday. Mixing of this warmer air to the surface will be a challenge with the ridge just to the east, but will follow closer to the RAP with a warmer solution to high temperatures with cloud cover rather limited.
220 AM CST Thu Jan 4 2018 The sharpest pressure gradient and cold air advection for the short term period will occur from daybreak through early afternoon, before the high pressure ridge axis settles into the area by late afternoon and overnight.
1130 PM CST Wed Jan 3 2018 Area continues to be entrenched in cold northwest flow aloft as a deep long wave trough remains carved out over the eastern CONUS. At the surface, low pressure was moving through the Great Lakes region while high pressure was building southeast out of Manitoba Canada. For tonight, high pressure will continue to build southeast out of Canada into the Upper Mississippi River Valley Region, setting up another bitter cold night with light northwest winds. Another bitter cold night set for Thursday night as ridge of high pressure moves overhead.
KAMX detects isolated, light showers over the Lower Keys, as well as over nearshore and offshore waters surrounding the Lower Keys.
1121 PM CST Wed Jan 3 2018 Despite the passage of a cold front last night, with a few flurries, temperatures today have been rather.
High pressure aloft will move east tonight and Thursday.
245 AM CST Thu Jan 4 2018 Early this morning, much of the central US into central Canada was under the influence of Arctic high pressure. For today and tonight, cold high pressure will continue to dominate over the area.
At the same time, snow showers will quickly develop over the higher elevations. Lake temperatures are close to freezing and ice has begun to cover portions of Lake Erie. Still expecting wind shear in the lowest levels, which will work to limit the extent of any snow bands that develop. Mid level low pressure will drop swd across the Great Lakes region and reinforce the ERN CONUS trough, and resultant cold into the weekend. Considering both the temperature and the fact that even marginal wind could bring wind chill values below headline thresholds, will maintain the Wind Chill Watch for the higher terrain, and will highlight the remainder of the area in a hazardous weather outlook as the wind chill index will likely fall to 10 to 20 below.
252 AM CST Thu Jan 4 2018 Ridge of high pressure stretched from northern Minnesota across western Iowa into the lower Missouri Valley at 08Z. These clouds relate to baroclinic zone found on the western edge of the ridge and will impact temperatures as they spread south into the area this morning.
105 AM EST Thu Jan 4 2018 Low pressure off the North Carolina coast will move northeastward away from the area tonight. Arctic high pressure will build in for the rest of the week and the weekend.
355 AM CST Thu Jan 4 2018 (Today and Tonight) A highly amplified upper level pattern will remain over the Lower 48 the next 24 hours, with a deep upper level trough over the eastern states and a ridge over the Rockies. Clouds will decrease later tonight, with overnight lows ranging from the upper 20s north, to the lower 30s south.
1140 PM CST Wed Jan 3 2018 Quiet but very cold conditions expected across central and southeast Illinois overnight as Arctic high pressure builds into the area.
1016 PM MST Wed Jan 3 2018 Upper analysis shows a broadening upper ridge over the western CONUS. At the surface, cold high pressure is located over most of the Great Plains with a week lee-side trough developing to the east of the northern Rockies. Dry weather with slightly warmer temperatures expected on Thursday as the upper ridge over the western CONUS shifts slightly eastward toward the northern plains.
200 AM CST Thu Jan 4 2018 Latest water vapor imagery shows the axis of an upper level trough moving just east of the TN Valley this morning, with a strong upper ridge building into the Intermountain West. At the surface, a cold front extends from its parent low over the eastern Great Lakes, south-southwestward along the Appalachian Mountains and into central Mississippi/northern Louisiana. High pressure will continue to build through the day, with north- northwesterly winds around 10 mph.
350 AM CST Thu Jan 4 2018 Today will continue a gradual warming trend through the weekend, with temperatures already generally near or a little warmer than this time last night. A light freeze is likely across at least the northern half of the area tomorrow morning, with lows ranging from the upper 20s across the Piney Woods region to the low/mid 40s right along the coast.
High pressure ridge continues to build over the Pacific Northwest and Northern Rocky Mountains as a weak disturbance moves southward and away from the forecast area this evening. Upper level ridge of high pressure continues to rebuild over the Northern Rockies and MT this evening. Minor adjustments were made to minimum temperatures and cloud-cover tonight along with the addition of patchy freezing fog for the Gallatin and Helena Valleys.
305 AM CST Thu Jan 4 2018 Benign weather overall for the next few days as we transition from the highly meridional flow that brought the recent cold snap, to a more progressive and less amplified pattern.
248 AM MST Thu Jan 4 2018 A high pressure ridge will persist over the region through today with generally light winds and clear skies, though some patchy fog and low clouds can not be ruled out in river valleys. High pressure ridging aloft drifts over the area today, resulting in light winds except right along the immediate Rocky Mountain Front. With less mixing and a stronger low-level inversion, high temperatures will not differ much from yesterday, and in some areas may actually be slightly cooler. The snowmelt that has begun the last day or two will provide a source of moisture, and combined with the inversions and lighter surface winds under the high pressure ridge fog or low stratus may develop, with the greatest threat being during the overnight period tonight.
356 AM CST Thu Jan 4 2018 Deep polar trough continues to impact all of the eastern half of the U.
336 AM EST Thu Jan 4 2018 Colder air is gradually filtering into the area early this morning in the wake of last evening's cold front. Temperatures will easily eclipse 5 degrees across the southern half of the CWA, though a brisk northwest gradient, augmented by overlake troughing, will keep wind chills flirting with advisory criteria at times. Southern counties unlikely to reach criteria given lagging cold air and high temps of 10 degrees or warmer, but will let the headline go as there will nonetheless be a chill in the air near the Ohio border.
/issued 935 PM CST Wed Jan 3 2018/ Cold front has pushed through all but our extreme southeast parishes this evening with temperatures actually a few degrees warmer in the wake of the front as opposed to ahead of it and that is due to the increased wind behind the front leading to increased mixing while near calm winds ahead of the front has led to more ideal radiational cooling conditions.
Slow Moderation By The The center of an Arctic high pressure is currently slipping down the Upper Midwest this morning. The far southwestern corner of Missouri into southeast Kansas may reach the freezing mark.
1043 PM CST Wed Jan 3 2018 Another cold night ahead as high pressure settles south and dry air is in place.
224 AM CST Thu Jan 4 2018 Downslope flow will help boost and spread warmer temperatures across Kansas today with portions of Central/South Central seeing daytime highs rise into the 40s.
645 AM EST Sat Dec 9 2017 The North Country will be in between systems today with a trough of low pressure to our west and deeper moisture off the East Coast. The trough of low pressure to our west will move in later tonight and Sunday and bring snow showers to the area.
With high pressure firmly in control, expect mainly sunny skies, except for some high cirrus at times.
High pressure will remain over the region for the next several days. Large amplified upper ridge remains in place over the western CONUS keeping a very dry airmass in place over our area. Little change in the pattern is expected through the weekend as the upper high remains centered over Norcal.
411 AM MST Sat Dec 9 2017 There's little indication that the strong blocking upper ridge to our west will move much during the next 24 hours. The rather strong n-nwly flow on the front side of this ridge will produce another day of gusty n-nwly sfc winds on the plains, esply east of a Wellington (Larimer Cty) to Limon (Lincoln Cty) line during the afternoon with sustained speeds of 15-25 mph and gusts to around 35 mph. Although areas exposed to gusty downslope breezes near the foothills, expect warmer min temps in the upper 20s/low 30s.
1014 AM EST Sat Dec 9 2017 An area of low pressure and associated cold front will move across the region this afternoon into this evening. Light snow will spread east this afternoon, along with a cold front which will push in from the west. Once the cold front goes by, precipitation will change over to snow showers as low level instability increases along with dynamic lift from upper level energy (in the form of a PV anomaly/perturbation). Temperatures will rise into the lower to mid 30s. Winds will increase from the west and will become gusty behind the cold front. Winds will remain gusty this evening in the wake of the cold front.
511 AM CST Sat Dec 9 2017 The persistent upper level pattern of ridging across the western CONUS and troughing across the Great lakes and Ohio River Valley will continue to prevail through the entirety of the forecast period.
Aloft a highly amplified upper trough of low pressure dropped from Eastern Canada across the Great Lakes Region and the Mississippi Delta and into the Southwest Gulf of Mexico, while a large upper ridge of high pressure was centered over California and Nevada and reached across the Pacific Northwest and Western Canada. In the Northwest flow between the departed upper trough and ridge out West a disturbance will help nudge a dry surface cold front/trough across the forecast area today.
408 AM MST Sat Dec 9 2017 Strong north-northwest flow continues over the northern plains between a ridge to the west and a trough to the east. Even warmer air moves into the region for Sunday, with highs in the 50s to lower 60s.
The weather this weekend will be dominated by strong high pressure embedded within the strong ridge anchored over the mountain west. Strong ridging remains anchored over the west, keeping conditions generally pleasant and dry. However, confidence is increasing that some small amplitude troughs will push through the northwest flow and move over northeast Montana. Synopsis: An upper-level ridge anchored by high pressure centered over California will continue mild & mostly clear conditions locally over much of the weekend.
702 AM EST Sat Dec 9 2017 Low pressure just off the coast this morning will move off to the northeast this afternoon taking much of the moisture with it.
442 AM MST Sat Dec 9 2017 12Z TAF CYCLE Strong upper level ridge anchored over CA and the PACNW with light to moderate nly flow aloft over NM through Sunday. The warming will continue into early week as a large and dominant ridge of high pressure strengthens over the Intermountain West.
Full sun will warm temperatures above freezing by mid morning. Hudson Bay low pressure system continues to bring an active pattern to the eastern CONUS in the way of high frequency of short waves in the overall eastern trough. High amplitude pattern with a sharp ridge over the western CONUS as high pressure centered near KRNO. Forecast hourly temperatures show areas getting above freezing between 10 and 11am. With the sun finally in view, much drier air, and temperatures above freezing, expect quick melting of ice on roadways and much of the snow. Temperatures tonight will dip to freezing again away from the coast and tidal lakes by 2am and remain through around 8am.
with a cold front moving through the state. Winds will decrease by tonight as high pressure moves into the state. while increasing SW winds have kept portions of WRN and NRN AR warmer with temps remaining in the upper 20s to low 30s. Highs will be warmer this afternoon compared to Fri. Lows tonight will be a bit warmer than seen early this morning. This will allow for a bit warmer conditions on Sun.
543 AM EST Sat Dec 9 2017 Low pressure, located just east of Cape Hatteras early this morning, will track northward today, paralleling the coastline.
A cold front will sweep in from the northwest today, accompanied by a broken to overcast deck of stratocumulus. Cloud ceilings are expected to remain at the lower threshold of VFR, and would not be surprised if some ceilings slip to MVFR at some locations.
645 AM EST Sat Dec 9 2017 An area of low pressure and associated cold front will move across the region this afternoon into this evening. The low levels are dry and as the system approaches today it will take awhile for the atmosphere to saturate. Winds will pick up this evening with the passage of the cold front.