Aikyam-Lab/Synoptic-Bench huggingface dataset:
357 PM CDT Wed Aug 4 2021 High pressure over the Mississippi River Valley continues to slowly drift eastward this afternoon, as our old upper trough finally begins to lift out towards the northeast CONUS. This second upper trough is pushing a weak front into western Kansas, with southerly winds developing to the east as the surface pressure gradient strengthens. However MUCAPE below 500 will keep the intensity of these showers on the low side.
Coverage should only be isolated if any storms can even sustain themselves off the higher terrain with minimal instability available. Warmer and drier Thursday as upper ridge builds into the area from the west.
The elongated, but rather weak upper trough that has brought several days of noticeably mild temps and reasonable humidity will continue departing to the east today and tonight.
The high pressure aloft producing our inland heat wave migrates to the Las Vegas area and then gets somewhat squashed Thursday by a low pressure trough going through the northwest states.
CAMs also indicate the potential for a weak line of storms to form over central North Dakota as the cold front slides through and progressively move off to the east as well.
Shower coverage is expected to increase over the next couple of hours before dissipating early tonight as the trough gets pushed to the east.
High pressure and smoke will be feature over the region the afternoon and this evening. A dampening upper-level wave and associated cold front will approach the area by Thursday night, preceeded by increasing warmth and humidity. The biggest change from the end of the current week will be even warmer temperatures, with many areas seeing high temperatures well into the 80s at times. The forecast for this TAF period, is similar to yesterday's at this time, with high pressure and smoke continuing over the region. Sometime around 09z/Thu, fog will form, mainly around MBL, but it is possible at PLN and APN as the lows will fall enough to form patchy fog near the TAF sites.
333 PM EDT Wed Aug 4 2021 High pressure will continue to be over the area through the end of the week. Temperatures will become warmer with a chance of showers and storms possible over the weekend. Weak high pressure at the surface with an upper level trough. Thursday afternoon the upper level trough lifts northeast with another short wave. Winds will be less than 5 mph in the low levels. Late Thursday night another chance of valley fog as high pressure builds. Tonight a little warmer with lows in the 50s. Thursday night lows from the mid 50s to the lower 60s. An upper level ridge building in keeps the weather dry for most of the short term.
1257 PM CDT Wed Aug 4 2021 For the 04/18z TAF period, dominant high pressure the sfc just to our north will yield VFR conditions through the period. /issued 1011 AM CDT Wed Aug 4 2021/ High pressure centered across the mid-section of the country is serving as the dominant weather feature for us today.
Temperatures for the next 7 days will be very warm to hot (above normal) with highs well into the 80s to lower 90s, and lows mainly in the lower 70s.
This will occur as high pressure remains over the region under northwesterly upper level flow.
Cumulus clouds across northeast Wisconsin have generally been fairly flat given the upper level ridging across the western Great Lakes; therefore the weather should be fairly quiet during the evening hours. A weak mid level trough and surface cold front will approach the upper Mississippi Valley on Thursday, which could set off showers and thunderstorms across central and north-central Wisconsin during the afternoon hours. The arrival of the low pressure system will turn winds to a southwesterly direction, which should help push the aforementioned wildfire smoke out of the forecast area on Thursday. For Thursday night, the first 500mb trough moves into the western Great Lakes region. The ECMWF has meager rainfall amounts across the forecast area, thus capped rain chances for now in the high end chance category.
An upper level trough will move east on Thursday, placing us in a quiet pattern for 24 hours.
1011 AM CDT Wed Aug 4 2021 High pressure centered across the mid-section of the country is serving as the dominant weather feature for us today.
Regional ASOS/AWOS and KY Mesonet sites show current temperatures in the upper 30s to low 40s, with the cooler valley/sheltered spots in the mid 30s. Have adjusted temperatures a couple of degrees cooler in some spots, otherwise current forecast remains on track.
The exception looks to be within the lower valley locations of Southeast Oklahoma into Western Arkansas.
/Tonight/ The evening sfc analysis depicts sfc ridging has shifted E of the region over the Lower MS Valley along the Cntrl Gulf Coast, with light Srly winds having recently returned to much of the region as of mid-evening. This cloud cover and light Srly winds have helped hold temps up this evening especially over the more urban areas, whereas the rural and protected areas have decoupled quickly since sunset, with 03Z temps about 5 or so degrees cooler than the urban areas.
1006 PM MST Sun Nov 24 2019 As the cold front crosses the CWA this evening, northwest winds have been gusting around 40 to 50 kts across parts of NW SD at times. 20z surface analysis had low over southern SK with trough into central SD and cold front into south central MT. Tonight, cold front moves through the CWA with limited moisture.
209 AM CST Mon Nov 25 2019 It will be a clear, chilly start to the day with temperatures mainly in the lower 30s. The daytime looks fantastic with sunny skies and highs in the lower 60s.
1101 PM EST Sun Nov 24 2019 As a coastal storm pulls away from the region, a ridge of high pressure will build into the Commonwealth tonight.
Otherwise, southwesterly winds coupled with ample insolation will see max temps reach into the upper 50s and lower 60s today, which in some places is a good 8 degrees warmer than climatological norms.
A cold front has been moving through the region today, with scattered showers along and ahead of the front. Behind the front winds will become northwest, which will allow for cooler and drier air to filter down the peninsula into South Florida. Cooler and drier air continues to filter in behind the front on Monday with high temperatures forecast in the 70s Monday afternoon.
Light winds, clear skies, and high pressure will lead to radiational cooling conditions with the possibility of patchy fog. Dewpoints are in the mid 30s for most of these locations and don't expect a significant drop off in dewpoints overnight and have not mentioned any patchy freezing fog at this time. Overnight lows will range from the low to mid 30s for most locations.
928 PM CST Sun Nov 24 2019 High pressure remains nearly overhead this evening resulting in nearly calm winds across much of the region. With the high clouds observed on satellite this evening as a limiting factor, the NAM is likely overdoing it, but with visibilities of 3SM already being observed at ESF, feel it prudent to add patchy fog wording to the forecast across central Louisiana now with gradual expansion to the coast overnight.
Some light MVFR fog is possible in the lower Ark River valley, but guidance has backed away from any significant vsby reduction later on tonight into Monday morning. The exception looks to be within the lower valley locations of Southeast Oklahoma into Western Arkansas.
1023 PM EST Sun Nov 24 2019 As a coastal storm pulls away from the region, a ridge of high pressure will build into the Commonwealth tonight.
The much advertised large low pressure system is still on track to move inland and dive southward into the Great Basin and desert southwest.
406 AM CST Mon Nov 25 2019 (Today and Tonight) It will be a cool start to the morning with 7 AM temperatures sitting in the low to mid 40s. However, temperatures will warm up quickly to highs in the low 70s to low 80s this afternoon.
322 AM CST Mon Nov 25 2019 Another nice day is expected today with afternoon temperatures climbing into the lower to middle 60s. A dry cold front will make its way into the Ozarks this afternoon but ultimately stall this evening. The front will then begin to return northward as a warm front in response to an area of low pressure moving out of the central Rockies and into the plains. Rain coverage will increase from east to west as the warm front lifts north through the day Tuesday. The Ozarks will remain in the warm sector south of the warm front through the day Tuesday and into Tuesday night as the low tracks across the plains and lifts north towards the Great Lakes.
It will be a clear, chilly start to the day with temperatures mainly in the lower 30s. The daytime looks fantastic with sunny skies and highs in the lower 60s.
Lows tonight should stay above freezing in the mid 30s. An area of low pressure will strengthen in the foothills of the Colorado Rocky Mountains early in the day, move into southwestern Kansas and proceed toward the northeastern quadrant of the state throughout the day. The highest chances for precip throughout the day will exist mainly over far northern and north central Kansas with the rest of the area likely to see more dry air aloft with the system.
623 AM EST Mon Nov 25 2019 High pressure along with dry weather and near normal temperatures are expected through Tuesday.
938 AM EST Mon Nov 25 2019 Quiet and dry weather today as high pressure continues to build over South Florida.
The wave that will help generate our wintry weather for Tuesday will be amplifying over the central Rockies today and will kick out into the High Plains tonight, with perhaps a band or two in the northern and/or western CWA that will give us a little light snow, but nothing much of significance. Also a bit concerning is a thin band of freezing rain potential advertised by the NAM NEST, just east and south of the tri-cities on Tuesday, as there could be a lingering warm layer aloft, and potential freezing temperatures at the surface. This should be a short-lived feature if it manifests, and my confidence is low regarding any potential narrow band of freezing rain.
A little cooler, but still very nice day is expected with surface winds backing to the south.
The upper trough will move into southeastern CO by tomorrow afternoon and will bring a Pacific front into the region. Areas likely to experience high winds will be our northern zones that will be closer to the surface and upper low.
955 AM EST Mon Nov 25 2019 High pressure will extend the southeastern US through Tuesday.
Today will be a gorgeous late Fall day with plentiful sunshine and highs in the low to mid 60s areawide. Luckily for much of the region, instability will be on the low side. However, models are consistent with a narrow band of 300-500 J/kg of MLCAPE setting up along and west of the Mississippi River ahead of an approaching cold front.
953 AM EST Mon Nov 25 2019 High pressure will build across the area through Tuesday.
550 AM CST Mon Nov 25 2019 Another nice day is expected today with afternoon temperatures climbing into the lower to middle 60s. A dry cold front will make its way into the Ozarks this afternoon but ultimately stall this evening. The front will then begin to return northward as a warm front in response to an area of low pressure moving out of the central Rockies and into the plains. Rain coverage will increase from east to west as the warm front lifts north through the day Tuesday. The Ozarks will remain in the warm sector south of the warm front through the day Tuesday and into Tuesday night as the low tracks across the plains and lifts north towards the Great Lakes.
A weakening cold front moved south through the Keys last evening and is now about to meet its demise near the northern coast of Cuba. With a weak high pressure center located this morning near the Big Bend of Florida, light northerly winds will continue today. Just to our north, dewpoints over the southern mainland are in the 50s, so the trickle of cooler and drier air will continue into the Keys this afternoon. A 500 mb ridge axis will nose westward across Cuba tonight, then expand and strengthen from Tuesday through Thanksgiving Day.
It is more likely to move through srn Wyoming and then dip south through nern Colorado or move south through New Mexico, south of the highest peaks of Colorado. At H500mb, the upper low is showing signs of negative tilt as it emerges on the cntl Plains Tuesday. Otherwise, a Pacific cold front is dropping through wrn and ncntl Nebraska this morning. Winds tonight below 800mb should back around and become east helping to moisten up the lower levels.
Upper level ridging that made November so dry so far has been broken down by a low pressure trough that has already left some light snow, mainly along the ID-MT border. This will spread southward and eastward, with light snow expected mainly in the central Idaho mountains and highlands, although the I-86 and I-84 corridors could see light snow under an inch with some rain mixed in during the afternoon as temperatures struggle to rise above freezing. Sun has the lowest threat for precipition of this holiday period.
As this trough digs southwest through the Great Basin and reaches the Four Corners early this evening, all the ingredients will be over the forecast area to produce widespread mountain and high valley snow, with lower valley rain changing to snow overnight.
The fog will dissipate by mid-morning today and temperatures will warm into the low to mid 80s under mostly sunny skies. Tuesday will be another warm day through the afternoon when isolated showers, and perhaps a few thunderstorms, could develop ahead of an approaching cold front.
655 AM EST Mon Nov 25 2019 High pressure will extend the southeastern US through Tuesday.
857 AM EST Mon Nov 25 2019 Mostly clear skies, very dry air, and light winds allowed temperatures to bottom out in the mid to upper 40s across the area this morning, with the exception of the immediate Space and Treasure Coasts where temperatures stayed in the low 50s. 9 am surface observations still showing fairly chilly temperatures out with most in the low to mid 50s. Good boating conditions continue with high pressure over the region.
Cold front pushing into the area from the north this morning. Analyzed along a line from Bridgeport to Wheatland to Casper on surface analysis this morning at 06Z. Main show starts this evening as that upper level low moves into northwestern Colorado and northeastern Utah.
735 AM EST Mon Nov 25 2019 High pressure will build across the area through Tuesday.
Temperatures will be 10 to 20 degrees colder today behind the cold front that moved through the area yesterday. A weak high pressure system moves in this afternoon and remains over the area through Tuesday with mainly dry weather. An upper trough/low dives south along the Pacific Coast on Tuesday.
This will quickly High pressure will continue to build in, with dry, cool, and overall pleasant conditions throughout the day. The result will be strong mid-level ridging across the eastern Gulf of Mexico which will push temperatures back above normal in time for Thanksgiving travel.
137 PM CST Mon Nov 25 2019 Another nice day is expected today with afternoon temperatures climbing into the lower to middle 60s. A dry cold front will make its way into the Ozarks this afternoon but ultimately stall this evening. The front will then begin to return northward as a warm front in response to an area of low pressure moving out of the central Rockies and into the plains. Rain coverage will increase from east to west as the warm front lifts north through the day Tuesday. The Ozarks will remain in the warm sector south of the warm front through the day Tuesday and into Tuesday night as the low tracks across the plains and lifts north towards the Great Lakes.
1244 PM EST Mon Nov 25 2019 High pressure along with dry weather and near normal temperatures are expected through Tuesday.
907 AM MST Mon Nov 25 2019 Added the northwest Colorado/Yampa River Valley to the Winter Weather Advisory list for tonight compact upper circulation will continue to add lift for additional snow over the cold dome in the wake of the cold frontal passage. As this trough digs southwest through the Great Basin and reaches the Four Corners early this evening, all the ingredients will be over the forecast area to produce widespread mountain and high valley snow, with lower valley rain changing to snow overnight.
Tuesday will be another sunny day with winds becoming southeasterly and temperatures warming into the lower 70s.
Tomorrow, the wind will increase substantially ahead of the next frontal system and then the rest of the week will be much cooler and wet.
/issued 938 AM EST Mon Nov 25 2019/ Quiet and dry weather today as high pressure continues to build over South Florida.
High pressure has brought cooler and drier conditions across South Florida today.
Weakening trough axis between the Dry Tortugas & the Marquesas Keys was drifting eastward with some light shower activity/sprinkles and potential restrictions to MVFR early this afternoon. A weakening cold front moved south through the Keys last evening and is now about to meet its demise near the northern coast of Cuba. With a weak high pressure center located this morning near the Big Bend of Florida, light northerly winds will continue today. Just to our north, dewpoints over the southern mainland are in the 50s, so the trickle of cooler and drier air will continue into the Keys this afternoon. A 500 mb ridge axis will nose westward across Cuba tonight, then expand and strengthen from Tuesday through Thanksgiving Day.
1147 AM MST Mon Nov 25 2019 Added the northwest Colorado/Yampa River Valley to the Winter Weather Advisory list for tonight compact upper circulation will continue to add lift for additional snow over the cold dome in the wake of the cold frontal passage. As this trough digs southwest through the Great Basin and reaches the Four Corners early this evening, all the ingredients will be over the forecast area to produce widespread mountain and high valley snow, with lower valley rain changing to snow overnight.
1028 AM EST Mon Nov 25 2019 High pressure along with dry weather and near normal temperatures are expected through Tuesday.
A 500 mb ridge axis will nose westward across Cuba tonight, then expand and strengthen from Tuesday through Thanksgiving Day.
At the surface, high pressure will be in place with southerly flow over the region.
There is however considerable uncertainty closer to the coast where dewpoints are now above the cooler shelf water temperatures. There will probably be some streamer shra along and east of the Highway 59/69 corridor, but confidence in regards to timing & specific locations are low and will leave the mention out of the TAFs attm.
A significant uptick in wind speeds due to strong low pressure is expected by mid-morning Tuesday. The upper trough will move into southeastern CO by tomorrow afternoon and will bring a Pacific front into the region. Areas likely to experience high winds will be our northern zones that will be closer to the surface and upper low.
1238 PM EST Mon Nov 25 2019 High pressure will build across the area through Tuesday.
255 PM CST Mon Nov 25 2019 Increasing high clouds late tonight into Tuesday morning as the warm front lifts north toward our area. This as well as southerly winds will keep temperatures warmer tonight, with lows Tuesday morning in the upper 30s to lower 40s. A 987-988 mb low pressure system is wrapping up over Kansas and Oklahoma on Tuesday. As the fronts start to take shape over the Central Plains, WAA and moisture advection associated with the warm conveyer belt extends the developing warm front east all the way to Alabama. As this warm front lifts north across the Tennessee Valley, moisture and ascent will generate showers Tuesday, mainly starting Tuesday afternoon.
We have left these areas in the 6 to 10 inch range with 12-24 across the remainder of the region with the highest amounts near the southern Laramie range where we have decided to issue a Blizzard warning due to strong wind speeds developing tonight into tomorrow morning. The snowfall should begin to taper off tomorrow afternoon as the upper level low slowly shifts east.
Expect warmer conditions tonight due to low level southwest flow.
921 PM EST Mon Nov 25 2019 High pressure will prevail across the area through Tuesday.
828 PM EST Mon Nov 25 2019 Very quiet night weather-wise with mostly clear skies, a very stable air mass across Soflo, and cooler temps expected again for morning lows. High pressure has brought cooler and drier conditions across South Florida today.
555 PM EST Mon Nov 25 2019 High pressure will prevail across the area through Tuesday.
We head into the evening with clear skies across Middle Tennessee, but a cold front approaching from the west will bring increasing cloudiness tomorrow and vicinity showers developing by afternoon. Also, winds will increase considerably as the surface pressure gradient tightens up with the cold front's approach.
High pressure nearly over head will give us light and variable winds in the morning, but by the afternoon winds will take on a light east to southeast component at around 5 mph. Strong upper ridge centered over western Cuba will retrograde into the southern Gulf of Mexico Thu. A light southerly flow Wed will produce above normal temperatures in the lower 80s. There will be a wind shift out of the north which will produce slightly cooler temps along the coast but still warming into the lower 80s interior. Upper ridge will weaken/flatten as strong upper low barrels east across the northern US. In the low levels, high pressure will push off the southeast US coast Sat veering sfc winds from E/NE Fri to SE Sat.
The overall trend ahead of this system will bring short lived warm advection across south central Kansas on Tuesday as a cold front quickly moves across the area in the morning, where the heavy precipitation is forecast across far northwest and north central kansas.
A few showers during the morning are possible at the NW AR sites as warm advection intensifies, and a few thunderstorms are possible in the afternoon there as well ahead of a Pacific cold front. Gusty south to southwest winds will develop south of the low Tuesday, which will raise fire weather concerns. A cold front will then sweep across the area Tuesday evening, shifting the still gusty winds to the west to northwest.
Gusty south to southwest winds will develop south of the low Tuesday, which will raise fire weather concerns. A cold front will then sweep across the area Tuesday evening, shifting the still gusty winds to the west to northwest.
Therefore, we have upgraded the High Wind Watch to a High Wind Warning across all of the southern TX Panhandle and most of the South and Rolling Plains. These winds will drag in drier air, but the cooler temps should help to abate some of the fire weather concerns; however, any fires that do develop, will take off easily. As this system passes, a cold front will be pushed into the area, though this is not a particularly deep cold air mass moving in.
Cold nighttime lows will dip to the low 40s along and west of I-95; urban sites and locations along the coast will see the mid to upper 40s this morning. Center of high pressure just offshore of northeast FL will continue to slide eastward into the Atlantic waters, maintaining a cool and dry airmass over the FL peninsula. The proximity of the high will keep winds calm this morning, then becoming light and easterly by mid day. Highs this afternoon will top out slightly warmer than yesterday in the low to mid 70s across the area. An upr ridge axis extending from Cuba across the Bahamas at midweek will slowly retrograde WWD to a position just upstream the FL peninsula by Thanksgiving.
Mostly clear skies have allowed for good radiational cooling under weak high pressure. Temperatures will warm quickly today into the low 70s under mostly sunny skies with light SE winds around 5-10 mph. Tonight, mostly clear skies will allow temperatures to cool down again, but with increased moisture levels, low temperatures for Wednesday morning will not be as chilly, only dropping down into the mid to upper 40s for inland locations and the low 50s along the coast.