Aikyam-Lab/Synoptic-Bench huggingface dataset:
440 PM EDT MON MAY 9 2016 WEAK MID/UPPER LEVEL RIDGING SHOULD CONTINUE TO KEEP OUR WEATHER FAIRLY QUIET TONIGHT. THE RIDGING WILL SLIP AWAY TO THE NORTHEAST OVERNIGHT. AND A TROUGH WILL APPROACH FROM THE SOUTHWEST. AN AREA OF PRECIP OVER MISSOURI THIS AFTERNOON ASSOCIATED WITH THE TROUGH WILL HEAD ACROSS KENTUCKY TONIGHT. THE TROUGH WILL CONTINUE TO APPROACH ON TUESDAY AND PASS ON TUESDAY NIGHT. SLIGHTLY WARMER AND MORE MOIST AIR IN THE LOW LEVELS COUPLED WITH A BIT OF COOLING ALOFT WILL YIELD SOME INSTABILITY DURING THE AFTERNOON.
838 PM EST Sat Feb 11 2017 Low pressure will bring rain and warm temperatures overnight into Sunday. Gusts in the Ridges will approach Advisory criteria by Sunday evening.
The latest model analysis shows a mid/upper level low pushing southward across the Central Coast this afternoon. This activity will likely be short lived as the low shifts across southern California and pulls away from the region. As high pressure builds in over the eastern Pacific in wake of the exiting trough, winds will relax, especially in the inland valleys overnight.
Gusty southwest winds at the very beginning of the TAF period will subside quickly and may become variable for a period before a cold front moves through later tonight. Northerly winds will strengthen behind the cold front and continue through tomorrow afternoon. /issued 237 PM CST Sat Feb 11 2017/ After an unbelievably warm day across the area today, a cold front will push south through the area tonight, bringing in more seasonal weather.
A ridge is setting up across the Great basin bringing a welcome period of dry and calm weather. With the copious amount of water entrenched across northern Nevada freezing fog will form in the valleys during the morning hours.
754 PM EST Sat Feb 11 2017 Low pressure and a warm front will approach the region from the southwest today. For tonight, the low will track east through the region, bringing rain. As the low exits to the east on Sunday, its associated cold front will sweep through the area. Colder air will filter into the region as high pressure builds into the Ohio Valley for the beginning of the work week. As the low approaches the area this evening into Sunday morning isentropic upglide will continue with condensation pressure deficits approaching zero. Models are in fairly good agreement with pushing the cold front through the CWA by early Sunday afternoon. The 850 mb cold front will then quickly follow behind with strong CAA.
530 PM CST Sat Feb 11 2017 Ceilings to deteriorate to MVFR/IFR overnight in advance of an approaching cold front. High pressure behind front to bring north winds around 10 knots with higher gusts on Sunday. The winds may not decouple until after midnight and so we are a hedging a little warmer with super guidance. Fog is possible is a spot or two and was not brought forth in the forecast as perhaps low clouds will more likely rebound with the warmer ground now in place. The pattern will change with highs tomorrow a bit cooler with some showers accompanying a late day cold frontal passage.
643 PM EST Sat Feb 11 2017 High pressure will prevail through Sunday.
546 PM CST Sat Feb 11 2017 For the 00Z TAFs, a strong cold front will move across the TX and OK Panhandles this evening with windy conditions along with associated gusts occuring at all TAF sites for many hours behind this boundary. /Issued 420 PM CST Sat Feb 11 2017/ Cold front is poised to move into the Oklahoma Panhandle at this time, and it is expected to sweep through all of the Texas and Oklahoma Panhandles before midnight.
555 PM EST Sat Feb 11 2017 Low pressure will bring rain and warm temperatures overnight into Sunday. Low-level moisture will continue to increase this evening as the low nears the southern Great Lakes. Gusts in the Ridges will approach Advisory criteria by Sunday evening. TAx Wind gusts will really crank up Sunday evening, especially in the ridges. The higher elevations appear likely to reach advisory criteria and cannot rule out an isolated gust approaching warning criteria. The typical locations in the ridges and I-80 corridor will have the highest snowfall totals, and the need for winter weather advisories can't be ruled out in these areas.
A cold front will bring a wind shift and then increasing north winds by around 12Z. Cold front currently from extreme NW OK through southern KS will push through the area tonight with winds turning northerly and becoming gusty. Temps nearer normal on Sunday which will be noticeably cooler than recent days.
Despite widespread cloud cover, warm temperatures currently being observed in the region at this hour thanks to a warm front passage. Dewpoints have steadily climbed into the lower 50Fs in northern parts of the CWA, with southern parts of the CWA are already near 60F. Cold front will pass through the region tomorrow morning, and drier/cooler air will work its way into the area behind the front. Winds should die down overnight and temperatures will fall below the freezing mark in many locations.
By daybreak, scattered light showers will develop with the approach of a cold front from the northwest. With lows forecasted tonight in the low to mid 60s, many record highest minimum temperatures values across Middle Tennessee will be shattered.
Surface map at 18Z shows a 1006 mb low situated just NW of JLN with a warm front extending eastward across the Ohio Valley and a cold front extending SW from the low across the central Plains. Scattered showers will continue overnight and tomorrow morning as a the cold front pushes through the mid state, with showers ending from west-to-east Sunday afternoon. The upper flow will remain quasi-zonal with this system, so all the dynamics will be restricted to the low levels of the atmosphere.
The upper level disturbance will continue dropping southward overnight, drawing the precipitation shield southward toward the upper low that is consolidating over southwestern Arizona. Colorado will continue under the deformation zone to the north of the upper low, but little in the way of additional precipitation is expected as mid level winds become light and southerly. As clouds are clearing from the north, there may be some patchy fog over the high mountain valleys.
955 PM EST Sat Feb 11 2017 High pressure will prevail through Sunday.
420 PM CST Sat Feb 11 2017 Cold front is poised to move into the Oklahoma Panhandle at this time, and it is expected to sweep through all of the Texas and Oklahoma Panhandles before midnight.
653 PM EST Sat Feb 11 2017 Well above normal temperatures will occur again on Sunday as high pressure sits offshore.
The low is progged to track E/NE along the boundary and reach KHUF by around 06z/12am. As the low approaches, the boundary layer will moisten sufficiently to create overcast conditions and perhaps a few rain showers. Once the low pushes into Indiana and winds become N/NW after midnight, any lingering showers will end and visibilities will rapidly improve from west to east overnight. High pressure will build into the Plains on Sunday, allowing skies to clear across central Illinois. With a tight pressure gradient in place, brisk northwesterly winds gusting to 25-30mph will bring cooler air into the region. temps will reach the lower 50s south of I-70.
A low pressure system off the southern California coast will send moisture northward into southern Utah through the balance of the weekend. High pressure aloft to the west of Utah will bring a dry and stable air mass to northern Utah early in the week, then across the remainder of the region midweek. The upper low currently along the southern California coast will continue southeast into northwest Mexico by late Sunday. The solid moisture plume advecting north ahead of the upper low into south-central/southeast Utah continue to fuel light showers along the old frontal boundary across the extreme south this evening. The advecting moist will run into a deformation axis as the upper low settles into northwest Mexico Sunday.
A cold front will works its way into the area from the north late tomorrow afternoon through tomorrow evening with winds shifting mainly to the northeast behind the boundary. Upper trof currently over Ca will advance toward west Tx.
With the light to calm winds over to cooler spots some patchy fog is expected to materialize by early Sunday. The ridge axis will be a little farther south on Sunday, which will promote southwest flow over more of the area.
628 PM EST Sat Feb 11 2017 Low pressure will bring rain and warm temperatures overnight into Sunday. Low-level moisture will continue to increase this evening as the low nears the southern Great Lakes. Gusts in the Ridges will approach Advisory criteria by Sunday evening. TAx Wind gusts will really crank up Sunday evening, especially in the ridges. The higher elevations appear likely to reach advisory criteria and cannot rule out an isolated gust approaching warning criteria. The typical locations in the ridges and I-80 corridor will have the highest snowfall totals, and the need for winter weather advisories can't be ruled out in these areas.
A cold front will push across the region tonight bringing an end to the record breaking warmth. A high amplitude pattern will evolve the next few days as an upper level ridge builds over the western U. and a series of upper level troughs dig into the northeastern U. An upper low will become cutoff across the southern High Plains before eventually shearing out.
Southwesterly flow will advect a warmer and more moist airmass from the Gulf and over our cooler land areas.
Ridge continues to influence area weather, with dry conditions anticipated into the work week. Patchy fog remains included for the valleys with inversions developing under the ridge.
Chattanooga Airport, TN 59 72 37 55 / 50 50 20 0 Knoxville McGhee Tyson Airport, TN 58 69 35 52 / 50 50 20 0 Oak Ridge, TN 57 70 35 52 / 50 50 10 0 Tri Cities Airport, TN 50 68 31 47 / 50 50 20 0.
A strong long wave ridge is building into the west coast. The ridges. will be warmer at night and occasionally breezy as low level easterly flow continues over the area.
Strong cold front is begining to push into the OK Panhandle and should continue movg southward rather quickly this evening with gusty winds in its wake. /Issued 546 PM CST Sat Feb 11 2017/ For the 00Z TAFs, a strong cold front will move across the TX and OK Panhandles this evening with windy conditions along with associated gusts occuring at all TAF sites for many hours behind this boundary. /Issued 420 PM CST Sat Feb 11 2017/ Cold front is poised to move into the Oklahoma Panhandle at this time, and it is expected to sweep through all of the Texas and Oklahoma Panhandles before midnight.
817 PM EST Sat Feb 11 2017 Strong high pressure east of Florida continues to ridge west over central Florida producing pleasant weather overnight.
1043 PM EST Sat Feb 11 2017 Low pressure will track across the lower Great Lakes on Sunday, before reforming off the New Jersey coast Sunday afternoon.
After sunrise, ceilings will increase back to MVFR levels with rain showers in the vicinity of terminals late in the period as a cold front approaches.
However, staying with the higher rain chances as we should see fairly widespread drizzle, especially during the overnight hours.
507 PM CST Sat Feb 11 2017 Early afternoon water vapor imagery indicated a progressive positively-tilted trough over eastern MT. This cold front will track southeast through the CWA overnight with winds increasing from the northwest.
This evening's surface and upper air analyses showed a deep high pressure system across much of the Southeast.
/issued 530 PM CST Sat Feb 11 2017/ Ceilings to deteriorate to MVFR/IFR overnight in advance of an approaching cold front. High pressure behind front to bring north winds around 10 knots with higher gusts on Sunday. The winds may not decouple until after midnight and so we are a hedging a little warmer with super guidance. Fog is possible is a spot or two and was not brought forth in the forecast as perhaps low clouds will more likely rebound with the warmer ground now in place. The pattern will change with highs tomorrow a bit cooler with some showers accompanying a late day cold frontal passage.
High pressure them builds into the region resulting in a slow warming trend and dry conditions through most of the upcoming week.
Diminishing wind and clearing skies continue across the region this evening as upper level ridging pushes into the area. Therefore will let the high wind warning ride through expiration, with no current plans for extension. Clearing skies and light winds tonight may provide opportunities for fog formation in the presence of added boundary layer moisture due to precedent above freezing day time temperatures. Upper ridging across the western U.
Temperatures are in the lower to mid 70s. In the low levels of the atmosphere, an Atlantic ridge of high pressure will extend across central Florida overnight. In the mid levels of the atmosphere, an area of high pressure will be centered over the southeastern Gulf of Mexico tonight. In the upper levels of the atmosphere, a ridge of high pressure will be located over the western Gulf of Mexico overnight.
638 PM CST Sat Feb 11 2017 Band of precip intensified as it moved east, dropping a mix of rain, freezing rain, and snow. Many sites had above freezing readings but untreated roads and bridges were starting to get slick via public reports. more snow could move in from the northwest later tonight as a cold front comes down, but much of the radar returns in Canada are moving east instead of south. A split flow pattern holds over western and central NOAM through much of the period with the Northern Plains stuck under a fairly dry and unseasonably warm H5 ridge.
628 PM EST Sat Feb 11 2017 Low pressure will track across the lower Great Lakes on Sunday, before reforming off the New Jersey coast Sunday afternoon.
504 PM CST Sat Feb 11 2017 Fairly tight temperature gradient present across the region this afternoon as a warm front settles across the I-70 corridor. Expect areas in the E/NE winds north of I-70 to remain in the 60s this afternoon, but areas south of that warm front have climbed well into the 70s. The best and likely only chance for precpitiaion will come early to middle part of the upcoming week as a closed mid level trough lumbers through the Southern Plains.
535 PM CST Sat Feb 11 2017 Surface cold front at early afternoon was across the mid portion of the forecast area with record setter at Chanute in the upper 70s to near 80 degrees. Despite being much cooler the next few days, temperatures will still average a little above seasonal climo for mid-February.
414 PM CST Sat Feb 11 2017 Surface map this afternoon shows a high off the Florida east coast ridging across the northern Gulf of Mexico. Rua Southerly winds and a warm and humid air mass will persist across the forecast area tonight and Sunday, until the weak cold front located over the Kansas/Oklahoma moves through the forecast area on Sunday Night. 2 inches, and Mean RH around 50 percent, as the cold front moves through the forecast area.
As we go into Sunday afternoon and night, a cold front will push south across the ArkLaMiss and bring another intrusion of continental polar air. Even with the cooler air, temperatures will remain above climatic normal for this time of the year.
Adjusted temperatures accordingly, but the challenge is how fast temperatures cool with calm winds and mostly clear skies through midnight, before the arrival of the surface cold front from the north. Gusty southwest winds at the very beginning of the TAF period will subside quickly and may become variable for a period before a cold front moves through later tonight. Northerly winds will strengthen behind the cold front and continue through tomorrow afternoon. /issued 237 PM CST Sat Feb 11 2017/ After an unbelievably warm day across the area today, a cold front will push south through the area tonight, bringing in more seasonal weather.
By daybreak, scattered light showers will develop with the approach of a cold front from the northwest.
711 PM EST Sat Feb 11 2017 Low pressure will track across the lower Great Lakes on Sunday, before reforming off the New Jersey coast Sunday afternoon.
521 PM CST Sat Feb 11 2017 /00Z TAFS/ Look for another cold front and returning stratus to create challenging flight weather tomorrow. Then, another cold front will move, from north to south, across West Central Texas tomorrow. Big changes on the way, as a strong cold front moves quickly south across the area Sunday morning. Otherwise, expect much cooler temperatures with highs in the upper 50s and 60s.
Clearing and cooler conditions will follow the front with temperatures falling during Sunday afternoon.
Will keep south to southwest winds up over 10kts sustained with gusts over 20kts through the evening and into the overnight hours, with a brief lull as the low passes, and then the northwest winds kick in Sunday morning in its wake.
630 PM EST Sat Feb 11 2017 Mild high pressure will extend across the Southeast states through Sunday. A cold front will cross our region Sunday night. High pressure with cooler air will follow for the beginning of the work week. Meanwhile low pressure is tracking from the Central Plains through the Ohio Valley through tonight. On Sunday, strong warm air advection continues ahead of a cold front approaching from the west. The cold front will cross the forecast area Sunday evening, accompanied by just some enhanced cloudiness and no precip as preceding mid level flow remains dry out of the WNW. The column dries out quickly behind the front and accompanying northern stream trough which deepens over the Northeast/New England late Sun night.
Highs Sunday will run 2-4 degrees warmer than today, with temperatures mainly in the 70s.
445 PM MST Sat Feb 11 2017 The combination of cold air advection behind another cold front and 3 hour pressure rises of 7-9mb through midnight will produce a period of breezy to windy north winds.
Temps are in the 30s at most locations, and even though 850 mb temps are running around -4c to 08c, freezing levels(agl) are generally above 800 ft. As we get toward late afternoon, freezing levels will be lowering with more areas receiving some of the light snowfall. Above ground freezing levels will be variable depending on the precip intensity rates.
124 PM EST Sun Jan 29 2017 A dry cold front will push through the forecast area tonight.
1140 AM MST Sun Jan 29 2017 Dry weather will continue today and into Monday as high pressure aloft slowly builds into the area. Not much change to Today's forecast as northerly flow aloft will become a little more northwesterly as the upper level ridge axis flattens out a bit.
Our higher terrain counties along and just to the west of the Virginia border can expect 1 to 3 inches of snow, with higher amounts possible along the taller ridges. The snow will begin to accumulate quickly as temperatures finally fall to or below freezing late this afternoon and early this evening.
1147 AM CST Sun Jan 29 2017 The backside of a weak short wave trough remain over the eastern portion of the CWA creating the slight chance for light snow and flurries through the early afternoon. NW winds will continue to be steady 10-15mph with gusts around 20mph throughout the afternoon making the mid 40s high temperatures feel slightly cooler than it is, especially with more cloud coverage today than yesterday. A clipper system will advect down the backside of the large amplitude ridge over the western US and into the northern midwest Sunday night.
The strong north breezes finally have diminished as expected, and a re-energized cold front is pushing southward now over Cuba and the Bahamas. A cold front over the Straits of Florida will advance southward tonight, with fresh northwest breezes developing across Florida Keys coastal waters overnight.
The pressure gradient is also expected to increase and compact ahead of the approaching cold front from the north and northwest. Given the model confidence and lessening time frame, felt it was best to push forward and upgrade the High Wind Watch to a High Wind Warning for those eastern zones of our CWA. Beginning late Monday night after the cold front, and continuing through most of the week, recent and current model consensus continues to support accumulating snowfall reaching up and crossing over in our CWA SW corner.
1226 PM EST Sun Jan 29 2017 A cold front will move across the local area today. A ridge of high pressure will build east across the region late tonight into Monday.
1208 PM CST Sun Jan 29 2017 Extensive low level cloudiness should decrease gradually today as the trough heads east. Cooler air will follow in the wake of this system, with highs by the end of the week will be in the upper teens to low 20s which will is a couple degrees below normal for early February. Looking ahead, cooler weather will move across the region as northwest flow continues, only without the leeside warming that we saw the last few days. The highest snow amounts will be from northern MN through northwest WI, but much of central MN and west central WI will still see accumulating snow.
223 PM CST Sun Jan 29 2017 WV imagery this aftn showing a well amplified upper ridge situated across the wrn half of the conus along with a deep downstream trof to the east.
252 PM EST Sun Jan 29 2017 A cold front shifts offshore tonight followed by high pressure through Monday.
103 PM MST Sun Jan 29 2017 Westerly winds will bring mostly sunny dry weather with warmer above normal temperatures to southern New Mexico and west Texas this week.
A trough will slide Southeast across the area Tonight, helping to reinforce this tightened pressure gradient, and keep winds stirring through the night. This mixing will minimize the frost potential, and should help keep Temperatures above freezing. High pressure will build from the West Monday, with sunny skies expected.
/19/ Quiet and cool conditions will persist across the CWA once again today as high pressure at the surface remains wedged into the region, along with prevailing northwest flow aloft. /19/ Prior discussion below: Today and tonight: Continued slightly cooler than normal and dry. Early morning surface analysis had a 1031mb high centered over west Texas ridging east across the northern Gulf coast.
Surface obs across the area show a freezing level around 2500 ft, and snow accumulations through the afternoon should be only in locations above that level. The freezing level falls gradually after 00Z, which will change all precip to snow. Cold midlevel temps under the trough will produce some instability in SW VA and NE TN, and overnight accumulations in that area are expected to be in the 1 to 3 inch range. Forecast uncertainty still high after upper trough moves out Monday night and weak high pressure with drying replaces it.
The High Wind Watch remains in effect per previous forecast. Precipitation is largely expected to remain on the warm side of the frontogenesis where air and road temperatures are above freezing compared to the colder air and roads across the James River Valley. Thus, do not expect much in the way of freezing rain or snow accumulation. Widespread highs in the mid 30s to even the lower 40s west are forecast based on the 00 UTC global suites and high resolution consensus through their 07 UTC iterations.
High pressure the moves east across the Gulf of Mexico Monday and Monday night. High temperatures Monday will generally be in the low to mid 70s with light winds continuing. Low temperatures Monday night will range from the low 40s across the ranchlands to the 50s near the coast.
321 PM EST Sun Jan 29 2017 The combination of an upper level trough moving across the Great Lakes and northwest winds behind it are expected to cause 3 to 6 inches of snow by Monday morning across southwest Michigan and northwest and north central Indiana.
110 PM EST Sun Jan 29 2017 A cold front will move across the local area today. A ridge of high pressure will build east across the region late tonight into Monday.
1236 PM EST Sun Jan 29 2017 A dry cold front will push through the forecast area this evening.