Aikyam-Lab/Synoptic-Bench huggingface dataset:
702 AM CDT Mon Aug 7 2017 High pressure over the northern Plains will drift southeast into Iowa by Tuesday morning. As the high continues to build into Iowa tonight, expect drier boundary layer air to push south into our area. Below normal temperatures will continue tonight ranging from the mid 50s closest to the high where lower dew point temperatures will prevail, to the mid 60s over the eastern Ozarks where it will be more moist with some cloud cover potentially lingering.
700mb temperatures still show us on the cooler side of the boundary between the western ridge and the east trough.
A strong upper level ridge will dominate the weather pattern this week, maintaining a warm dry air mass over Western Washington.
720 AM EDT Mon Aug 7 2017 Upper air pattern consists of a broad 500 mb trough over most of the U.
517 AM MDT Mon Aug 7 2017 Current surface analysis shows high pressure centered over western ND. A brief period of drier weather can be expected early this week, today through Tuesday morning, as high pressure slowly slides southeast through the region. Highs will be in the 70s to near 80, with some 60s across the higher Black Hills. Tuesday will be a bit warmer, with highs in the upper 70s and lower 80s across the plains, low to mid 70s across much of the Black Hills.
1242 PM EDT Mon Aug 7 2017 High pressure will build into the region today. Low pressure will track across the southern Gulf of Maine Tuesday then exit across the maritimes Tuesday night.
1020 AM EDT Mon Aug 7 2017 Forecast is on track today with cooler than normal temperatures due to extensive cloud cover and numerous showers and a few thunderstorms. Chattanooga Airport, TN 81 72 82 70 / 80 50 50 40 Knoxville McGhee Tyson Airport, TN 80 70 80 66 / 90 60 40 20 Oak Ridge, TN 79 70 80 65 / 80 60 30 20 Tri Cities Airport, TN 77 66 77 62 / 100 70 30 20.
1232 PM EDT Mon Aug 7 2017 Low pressure will slide just south of the state later today before heading off the Mid Atlantic Coast tonight.
603 AM CDT Mon Aug 7 2017 High pressure ridge building over the northern High Plains. Have much of today dry, although some sprinkles will be possible out of some of the low clouds expected to persist through the morning. and ridging over the west coast of the country keeps weak northwesterly flow over the Plains and the Rockies.
735 AM EDT Mon Aug 7 2017 Atlantic high pressure will prevail today.
Weakening high pressure aloft centered over the Great Basin will lead to an increase in thunderstorm activity across mainly northern and central Utah for the first half of the week. A low-amplitude upper ridge across the interior west with an upstream trough over Oregon/northern California will maintain a west-southwest flow aloft across the Great Basin through midweek.
800 AM PDT Mon Aug 7 2017 A weak trough near the California coast will maintain a dry southwest flow aloft this week.
907 AM EDT Mon Aug 7 2017 High pressure will build into the region today. Low pressure will track across the southern Gulf of Maine Tuesday then exit across the maritimes Tuesday night.
1041 AM EDT Mon Aug 7 2017 Warm front has moved well north of the CWFA this morning. An upper level trough will move through the Ohio Valley today, with several perturbations in the upper level flow noted across north and central Georgia. The cold front will push eastward into portions of north Georgia between 00-06Z tonight - with ECMWF/ SREF faster than GFS/NAM - and into southern portions of forecast area Tuesday.
Just an isolated shower or two in the far southeast vcnty inverted trough axis. Overall high pressure taking hold which will result in VFR mostly SKC into Tuesday. Possible a few additional -shra could develop next several hours across southern CWA as mid-level low pressure trof passes through. Otherwise expect widespread mid-clouds to decrease through the morning from the north as drier air in the low to mid levels. Mostly clear conditions expected tonight as high pressure settles over the area. Will include some patchy late night fog in far western CWA late tonight due to proximity to low level ridge axis located farther to the south.
705 AM EDT Mon Aug 7 2017 Showers will continue to pull east through today as a low pressure system pushes toward the east coast. High pressure and a drier airmass will then build into the region through mid week. While dry air descending through the mid levels, the lowest level of the region is now saturated with plenty of low clouds and a lingering chance for scattered and shallow light showers persisting into mid day in all but the far western forecast area as the upper trough begins to swing through, keeping plenty of clouds and persistent below normal temperatures only topping out in the mid 70s.
The cold front will slip south into the area late tonight through tomorrow and stall over the region. Today, a cold front is positioned west of the forecast area with mostly cloudy skies across the Upstate and warm, moist advection over the Midlands and CSRA. High temperatures are forecast in the lower 90s. Showers and thunderstorms will continue to be a possibility through the short term period as the cold front moves in the area tonight, and stalls out somewhere across the south-central Midlands and CSRA. Severe threat should diminish some this evening, but still expect the potential for heavy rainfall due to the high PWAT values.
742 AM PDT Mon Aug 7 2017 A weak trough near the California coast will maintain a dry southwest flow aloft this week.
An area of high pressure building into the region this morning is producing light and variable winds. High temperatures will range in the upper 70s, to the lower 80s. The high pressure will drift southeast of the region later tonight with southerly winds developing over the western Dakotas. A low pressure system approaching the region from the northwest will cause a weak LLJ to develop in eastern SD with showers and thunderstorms possible Tuesday night.
STRONG THUNDERSTORMS POSSIBLE ALONG US-301 CORRIDOR THIS Late morning surface analysis depicts Atlantic surface ridging (1022 millibars) centered near Bermuda and extending its axis across northeast Florida. deep-layered ridging was centered just northeast of the Bahamas and covers the Florida peninsula. Drier air associated with the deep layer ridge to our east has departed our region, and a moist southerly flow has already initiated convection over coastal Flagler and southern St. Highs will climb into the low to mid 90s inland, with the early afternoon sea breeze and convection keeping coastal highs closer to 90. Atlantic ridging will extend across the northeast Florida coastal waters today. Southerly winds will prevail through Tuesday, with our local pressure gradient loosening by midweek as weak high pressure blankets our coastal waters through late week.
High pressure remained anchored over the Gulf of Mexico with a closed low over northern portions of Hudson Bay in Canada. Further north, low cloudiness was drifting into northern Nebraska and was in association with an approaching arctic cold front. Light snow had begun to push into the Pine Ridge as of mid afternoon. Decided to keep pops low though as precipitation chances are mainly in advance of the warm front, where mainly virga is expected. Clearing is expected overnight as high pressure builds into the forecast area. High pressure will track into the lower Missouri valley on Friday with winds shifting to the south. Cold air will recycle on the western periphery of the high with only a meager rebound in temperatures.
This cooler air then settles in for the beginning of the weekend.
Surface analysis this afternoon places a ridge of high pressure just off the East Coast of Florida while a warm front was over the Ohio Valley and a cold front over portions of the Middle Mississippi Valley and Central Plains. A tight pressure gradient over the Lower Mississippi Valley has resulted in sustained south winds of 25 mph with a few occasional gusts to 40-45 mph across portions of Northeast Arkansas, the Missouri Bootheel, and Northwest Tennessee. A cold front located over portions of Missouri will begin to drop south into the Lower Mississippi Valley late tonight into Friday. This will bring a return of rain showers back to the Mid-South along with cooler temperatures for Friday.
Seasonably warm temps are expected through the near term with subsidence from an upper high centered over the Gulf of Mexico the cause. Highs Friday will be bumping or breaking records (81 for Mobile, 70 for Pensacola) for the day due to the strength of the upper high.
The warmer air will be fleeting with steady low- level cold advection tonight behind a cold front working southward. A bit of light snow is possible this evening as the upper trough axis swings through, although lift isn't very impressive, so maintained 20-30 pops for now. High pressure will build southward from the northern plains later tonight with sunny skies expected on Friday.
Weak cold front works through the region on Friday night.
Drier and warmer conditions are expected to develop Friday and into the weekend.
This thermal gradient will erode as a cold front continues to push through northwest Missouri this afternoon, eventually pushing south of the entire CWA later this evening. In the meantime, dewpoint values across eastern Kansas have trended downward as of the late morning and early afternoon, coincident with a persistent dry low-level air mass out of the southwest, ahead of the cold front. With increased southwesterly to westerly flow and a persistent drying trend from the southwest in the lower levels, fire weather danger will remain elevated through the afternoon hours. Gusty winds will remain in place overnight coincident with the frontal passage, while widespread sub-freezing temps will return shortly after midnight in the wake of the frontal boundary.
As of 21Z Thursday afternoon a mid-level trough axis extended from the northern Plains into southern California. At the surface a trough was bisecting the CWA from northeast to southwest. The deeper mixing has also resulted in lower surface RH values in the lower 20 percents. Short term solutions are also trending towards slightly warmer temperatures overnight with lows in the upper teens and 20s.
809 PM EST Thu Feb 15 2018 Low pressure and a cold front will result in widespread rain tonight. This will mean the heavy rainfall band will be move likely to meander slightly north then south of its current location, yielding the highest amounts in total generally near where it is current. After a warm day today, temperatures will be near or below freezing by sunset Friday.
High pressure continues to settle into the northern plains behind the front. Upper level analysis places trough stretching from Hudson Bay sweeping through the northern plains and on into the Great Basin. Snow over the area is gradually tapering off as the trough works its way through, with some light activity remaining over southern portions of the area. For the rest of this afternoon into tonight, cold high pressure continues to settle into the area with snow coming to an end through the afternoon. This will bring warmer temperatures with readings close to normal.
A cold front will be moving south through all TAF sites starting around 01-03Z Friday for KDHT/KGUY and around 05Z Friday for KAMA. Behind the cold front, winds will shift from southwesterly to northerly with winds still rather gusty between 15-25 kts. /Issued 220 PM CST Thu Feb 15 2018/ A cold front which lies from southeast Colorado into eastern Wisconsin will continue to push south. However, an upper level short wave trough will move northeast in the southern jet stream and it is expected to bring precipitation mainly to the south of the Texas Panhandle on Friday night.
544 PM EST Thu Feb 15 2018 Low pressure and a cold front will result in widespread rain tonight. This will mean the heavy rainfall band will be move likely to meander north then south of its current location, yielding the highest amounts in total generally near where it is current. After a warm day today, temperatures will be near or below freezing by sunset Friday.
Evening surface analysis shows a cold front moving into the Southern Plains out of Kansas and expect this boundary to reach CLL, UTS, CXO, and possibly IAH during the afternoon hours. /ISSUED 329 PM CST Thu Feb 15 2018/ Despite persistent onshore winds the past couple days, the lack of a significant boundary and strong mid level ridging centered offshore has limited precip.
511 PM CST Thu Feb 15 2018 A strong surface cold front continues to drop south across South Dakota, bringing gusty northwest winds along with it.
1042 PM EST Thu Feb 15 2018 Currently - A ridge axis is descending slowly down the Florida Peninsula. Deep layered ridging is present with considerable dry and warm air aloft. Surface dew point temperatures have also fallen further into the lower 60s. Temperatures are falling through the lower 70s. Short Term Update - The ridge to our north will continue to slide southwards overnight, resulting in winds continuing to weaken. A ridge across the Florida Peninsula will continue to inch nearer Florida Keys waters overnight.
The high clouds will gradually clear out of the area this evening. The snow free areas in the far S RRV may get warmer, as some guidance indicates lower 30s.
554 PM CST Thu Feb 15 2018 Looks like the warm front made it about as far north as a Macomb to Peoria to Chenoa line today, with the fog still lingering to the north early this afternoon.
1009 PM EST Thu Feb 15 2018 Low pressure and a cold front will result in widespread rain tonight. This will mean the heavy rainfall band should start to slowly meander back southward from its current location, yielding the highest amounts generally south of its current location. After a warm day today, temperatures will be near or below freezing by sunset Friday.
The back edge is nearing Mobridge and extends northeast towards Jamestown, ND. A 1035mb high pressure follows, with the center of the high tracking across western/central South Dakota.
Because of this we'll see temperatures remain warmer than normal overnight tonight. Showers are expected to develop early Friday morning ahead of an approaching cold front. Temperatures will be noticeably cooler, but still warmer than normal Friday night.
905 PM CST Thu Feb 15 2018 Cold front has almost moved through the CWA and is still going through parts of southeast IL, where rain continues to fall. Looks like the warm front made it about as far north as a Macomb to Peoria to Chenoa line today, with the fog still lingering to the north early this afternoon.
This drying was most evident in the lower precipitable water value of 1.
The low stratus and fog will develop first at KBPT/KLCH with IFR conditions expected to develop between 01Z-03Z with IFR/LIFR fog prevailing after 03Z.
Strong cold front will move into northeast Oklahoma by mid evening as upper trough shifts into the Great Lakes region.
A cold front was entering into Northeast Oklahoma late this evening with scattered areas of light rain showers developing along/near the front. the cold front will continue to push southeast through the CWA with rain chances spreading east and southeast with the movement of the front. have adjusted hourly temps/dewpoint/wind grids to account for the timing of the drier/cooler air overnight.
The cold front should cause a northerly wind shift between 15-17Z, ending fog at all sites and causing a gradual improvement to MVFR ceilings by late morning and VFR by mid-afternoon.
The Atlc high pressure ridge axis will settle across Lake Okeechobee and northern Bahamas tonight and Friday resulting in a south to southwest wind flow. Lows in the lower 60s, except upper 50s across the far north and the south interior, which is several degrees above normal. Elsewhere, there will be a chance for fog, including southern terminals (VRB/FPR/SUA) in proximity to the ridge axis. High pressure ridge axis will settle across the southern waters tonight and Friday.
Temperatures south of there are in the 60s and 70s, with a few readings even in the lower 80s in the St. High pressure over the Ohio Valley Friday night will continue a return flow over the region.
The cold airmass will begin to retreat to the east tonight as a trough of low pressure forms along the lee side of the northern Rockies. A cold front will sweep though the area Friday evening with winds shifting north and gradually decreasing. Heavy snow will impact the higher elevations of the Rocky Mountain Front with several inches of snowfall expected. Over the plains and valleys a brief band of moderate to heavy snow will be possible with the passage of the cold front resulting in quick snow accumulations of 1 or 2 inches.
High pressure was building across the Northland in the wake of this morning's cold front. The trough will swing through the Northland this evening with a brief increase in cloud cover expected. Nudged overnight lows a little colder with readings in the -5 to -15 degree range for most locales, but a little warmer near Lake Superior in northwest Wisconsin. Friday appears sunny with cooler temperatures in the teens and 20s above zero. As the long wave trof retrogrades slightly, this will allow for more wave amplification in the part of the stream originating in the Pacific NW and northern Rockies.
707 PM EST Thu Feb 15 2018 Light rain and areas of fog will continue through the early evening with dry and cooler conditions anticipated by late tonight. Temperatures tomorrow will hover around freezing.
Clouds are expected to fill back in overnight ahead of a cold front expected for Friday with overnight temperatures well above normal. A progressive system in the central CONUS will move east, eventually dropping a cold front south Friday into Friday night. The trough associated with this system is not amplified and the dynamics look fairly weak well north of the region.
Cigs will drop to IFR on Friday morning as a cold front moves across terminals and brings widespread SHRA.
At the surface, arctic cold front has moved south of the area with temperatures steadily falling through this afternoon. Arctic high pressure will slide across the Black Hills area by midnight and shift south east by early Friday morning.
The cold front will be approaching our northwest counties early this evening. Going on the lower end for qpf tonight given the dry air in place however most locations along and south of I-44 will see some measurable rainfall tonight. That cold front will also push temps down into the 30s by morning with gusty northwest winds.
Rain showers will return from north to south in the 10-16z timeframe as a cold front sinks south across the area.
A cold front will drop through the area tonight, bringing continued opportunity for rainfall and perhaps a rumble of thunder or two to the area.
907 PM EST Thu Feb 15 2018 Low pressure and a cold front will result in widespread rain tonight. This will mean the heavy rainfall band will be move likely to meander slightly north then south of its current location, yielding the highest amounts in total generally near where it is current. After a warm day today, temperatures will be near or below freezing by sunset Friday.
Lee-side troughing will develop late tonight and continue through the day Friday.
A cold front currently stretches from near Oklahoma City to the northeast to near Columbus, OH. The upper level ridge across the Gulf of Mexico will retreat tonight as a positively tilted trough moves across the Central Plains. The cold front will slowly sink south during the overnight hours. Chattanooga Airport, TN 61 64 43 54 / 20 70 40 90 Knoxville McGhee Tyson Airport, TN 61 63 40 49 / 40 100 30 80 Oak Ridge, TN 61 63 40 50 / 50 100 30 80 Tri Cities Airport, TN 59 61 37 46 / 50 100 30 80.
An attendant surface cold front is sliding south across Southwestern Kansas this afternoon. Behind the cold front, Canadian high surface pressure will quickly move in from Montana. Southerly flow returns late Friday afternoon as the aforementioned high pressure moves east.
do expect northerly winds to persist at least thru 06z-07z before tapering off as high pressure builds south into the Plains region.
A broad area of high pressure will continue to bring dry conditions to South Florida tonight. /issued 650 PM EST Thu Feb 15 2018/ For east coast terminals, high pressure, VFR conditions, and ESE wind AOB 10 KT will prevail.
700 PM EST Thu Feb 15 2018 Aviation Dense fog over the I-94 corridor will dissipate this evening as a cold front moves through the state. The sun will return Friday as high pressure moves overhead.
650 PM EST Thu Feb 15 2018 For east coast terminals, high pressure, VFR conditions, and ESE wind AOB 10 KT will prevail.
A progressive system in the central CONUS will move east, eventually dropping a cold front south Friday into Friday night. The trough associated with this system is not amplified and the dynamics look fairly weak well north of the region.
A band of persistent flurries/snow may even develop across north-central Kansas along the base of the trough moving through the area.
So will keep the highest pops and what little snow there is out in eastern Colorado. do expect northerly winds to persist at least thru 06z-07z before tapering off as high pressure builds south into the Plains region.
With the lowering of temperatures there were some areas north that were flirting with the -25F criteria for wind chill advisory, but elected not to issue with steady or slightly diminishing winds and rising temperatures late tonight. High pressure continues to settle into the northern plains behind the front. Upper level analysis places trough stretching from Hudson Bay sweeping through the northern plains and on into the Great Basin. Snow over the area is gradually tapering off as the trough works its way through, with some light activity remaining over southern portions of the area. For the rest of this afternoon into tonight, cold high pressure continues to settle into the area with snow coming to an end through the afternoon. This will bring warmer temperatures with readings close to normal.
TFJ Skies are clearing from northwest to southeast this afternoon as arctic high pressure builds in out of Canada.
812 PM EST Thu Feb 15 2018 Light rain and areas of fog will continue through the early evening with dry and cooler conditions anticipated by late tonight. Temperatures tomorrow will hover around freezing.
324 AM CDT Mon Sep 11 2017 Cold front is about half way thru the fcst area at 08z.
One more day of warm and dry conditions before high pressure gives way to an offshore trough. (Today through Tuesday) High pressure will bring another day of warm and dry conditions to Northwest California. High pressure will also be giving way to an offshore trough during this time frame, thus chances for thunderstorm activity will be increasing throughout the day tomorrow.
359 AM EDT Mon Sep 11 2017 High pressure builds into the region through tonight and then to the south Tuesday.
Another clear and cool night ahead for central IL, thanks to 1031 mb high pressure anchored over southeast Ontario and ridging sw into IL/MO. High pressure across Illinois will steadily weaken in the short term, as the remnants of Irma advance into western Georgia by 00z/7pm Monday. Slightly cooler temps in the mid 70s are expected in our NE area, toward Danville/Hoopeston. The main concern in the extended is the affects from Irma as the low pressure center moves from eastern Georgia Monday evening to southwestern Tennessee by Tuesday afternoon.
Expect VFR conditions to continue throughout the next 24 hours as high pressure remains in control. Very dry air mass will continue over South Texas through the period with the upper level ridge axis remaining to our west. The long period swells will continue to impact the coast through the day on Monday, so extended the High Rip Current through Monday for the Gulf-facing beaches of the Middle Texas Coast.
Temperatures should warm a degree or two more most areas as there is some thermal ridging ahead of frontal boundary. The front weakens overnight and we have some high pressure building in behind the front.