Aikyam-Lab/Synoptic-Bench huggingface dataset:
Cold high pressure advects into area overnight with lows below freezing in Citrus and Levy counties and wind chill advisories needed for most of the area. High temperatures will range from the upper 40s in Levy County, the mid 50s along Interstate 4, to the lower 60s in Fort Myers.
Thus expect less mixing and high temperatures in the valleys to be a few degrees cooler than yesterday. Mountains will head in the opposite direction with temperatures slightly warmer than yesterday. With an upper level ridge to our west, we will see a strengthening inversion in the valleys through the short term period. A few areas of low cloud are forming this morning, mainly in the Lower Treasure Valley, but also just getting into the Western Magic Valley.
338 PM CST Mon Jan 1 2018 High pressure will continue to slide southeast out of the region tonight. With that said we did utilize guidance on the high side of the envelope of solutions.
401 PM EST Mon Jan 1 2018 Arctic high pressure will build across the region tonight and Tuesday and then move off to the east Tuesday night.
Still not expected to get above freezing. The clouds will also help keep the lows from bottoming out and they will fall to the teens Tue night.
1113 AM CST Mon Jan 1 2018 Arctic high pressure remains over the region at 08Z with temperatures in the -10 to -20 range this hour. As the high moves off to the southeast Tuesday and Tuesday night another cold front moves through the area Tuesday night.
Yes, dear friends, the cold front is near. Meanwhile, the Pulley Ridge buoy has risen to 9 ft, after reporting only 1 ft seas near sunrise this morning. The main focus in the short- term is the incoming cold front, which is poised to move across most of our coastal waters tonight and stall somewhere near the island chain tomorrow. Cloud cover will keep cooler high temperatures (low 70s), and warmer lows (mid 60s) through Tuesday night.
In addition the close proximity of the high will reduce pressure gradients over central IL, resulting in lighter wind speeds under 5 mph overnight causing better surface radiational cooling conditions in the clear skies, and resulting in lows near or slightly below those observed last night. A small amount of warming is expected for Tuesday afternoon as the high passes by to the south and winds shift to WSW.
Low cloud cover and fog will be common during the next few days with high pressure providing stable conditions over north-central Idaho and western Montana.
Through the end of the week the synoptic pattern depicts a broad trough east and a building ridge over the Rockies, keeping cold air outbreaks further east and bringing near normal temperatures to western and portions of central North Dakota VFR conditions are expected to prevail through the 18Z TAF period.
211 PM EST Mon Jan 1 2018 High pressure will gradually build in from the west through tonight with continued bitterly cold temperatures.
Temps below 5500 feet were in the low single digits or were below zero. However, I cannot rule out a few snow flakes across the higher elevations of the Pikes Peak region and northern El Paso county. It will also drag a cold front across the plains during the early morning hours, with the sfc winds from a predominantly NW direction by sunrise tomorrow. One aspect of the forecast that stood out was the low temps Wed morning in the San Luis Valley (SLV). A dry cold front will move through the southeast plains tonight sending a brief round of gusty north winds into the KCOS terminal shortly after 06z.
142 PM PST Mon Jan 1 2018 High pressure aloft will maintain fair and mild weather this week, with periods of high clouds, as patchy dense fog visits the coast each night.
1253 PM EST Mon Jan 1 2018 Canadian high pressure will build toward the region through Tuesday.
903 AM PST Mon Jan 1 2018 High pressure aloft will maintain fair and mild weather this week, with periods of high clouds, as patchy fog visits the coast each night.
1136 AM CST Mon Jan 1 2018 Bitter cold this morning with dangerous wind chills across the entire region as arctic high pressure dominates over the Heartland.
335 PM CST Mon Jan 1 2018 Arctic high pressure will build south through the region tonight and Tuesday.
This will keep the bone chilling cold airmass in place, even if altogether, the high is weakening a little from its peak strength. With the center of the high incoming, north winds will diminish with time, so the ongoing Wind Chill Advisory inherited/running thru midday tmrw still looks good. Another cold front makes passage Wed pm, offering a reinforcing shot of arctic air, along with stiffer winds, that will produce Wed night wind chills once again below zero, and possibly flirting with Advisory criteria for northern parts of the FA.
357 PM CST Mon Jan 1 2018 As expected, afternoon highs have remained in the 30's areawide with some locations not even making it above freezing.
High pressure aloft will gradually strengthen across the region through the middle of the week. This high level moisture is creating partly sunny to mostly cloudy skies across the northern two-thirds of the CWA this morning and these sky conditions should remain basically unchanged through the day.
Latest obs do show temps going up enough along with the receding of the low cloud deck to bring area above Advisory criteria. Warmer air aloft moves in behind the disturbance with forecast high temperatures coldest in the east with mid 20s while across the west low to mid 30s.
253 PM CST Mon Jan 1 2018 Arctic high pressure continues to settle into the Mid South this afternoon and will be centered just to our north overnight.
Tomorrow is another day below freezing for most areas but a few degrees warmer compared to today, Monday, with highs in the mid to upper 20s. Another night of low temps in the single digits to low teens is expected for parts of the area Tuesday night as a high pressure ridge will provide calm winds and clear skies.
213 PM EST Thu Mar 1 2018 A cold front will move through the area this afternoon and move off the coast this evening.
Initial trough/cold front has worked its way east of the area now, with the second front due in this afternoon. The moderate rains will continue across our area into the early afternoon, then through the mid afternoon hours the rains should be tapering off to light rain west to east with the passage of the second stronger cold front. Winds will be gusty after the second cold front passes--looks like current advisory starting this evening for higher elevations will cover it. Chattanooga Airport, TN 64 40 58 33 / 100 20 0 0 Knoxville McGhee Tyson Airport, TN 62 38 52 29 / 100 20 10 0 Oak Ridge, TN 61 38 53 29 / 100 20 10 0 Tri Cities Airport, TN 62 36 49 24 / 100 40 10 10 NC.
High pressure at the surface will continue to build over the local area.
A cold front will move through this morning, with just a slight chance of showers in the vicinity of the front, mainly in the Victoria Crossroads region. High temperatures today will be 10 to 15 degrees cooler than yesterday. Lows tonight will fall into the lower to mid 50s.
Scattered showers will continue this afternoon and evening ahead of an approaching cold front, with brief periods of MVFR visibility possible. Chances of showers and isolated storms will increase across our northwestern areas later this afternoon as a cold front approaches our area; increased PoPs in these areas to the 60-80% range as confidence has increased. High temperatures should reach the lower-mid 80s inland with upper 70s along the Gulf coast.
1125 AM CST Thu Mar 1 2018 Light showers continues across portions of southern Arkansas and Louisiana this morning, in wake of a cold front moving through the region.
A large upper level low will remain just off the Pacific Northwest coast through at least tonight. This wave will also pull a cold front across the area with it, lowering snow levels some while shifting low level winds to more westerly directions.
354 PM CST Thu Mar 1 2018 Quiet weather is expected through tomorrow afternoon in the wake of a departing low pressure system. Gusty northwest winds will diminish after sunset tonight and gradually veer tomorrow in response to a ridge of high pressure moving across the region towards the Great Lakes. Kanofsky The combination of ridging aloft and the continued influence of a high pressure center at the surface will ensure quiet weather through most of the weekend.
345 PM CST Thu Mar 1 2018 Mid-afternoon sfc analysis/88D imagery show the cold front now sliding out of the sern zones with just a little light precipitation noted in its wake across lower Acadiana and coastal swrn LA. Drier air surging behind this next boundary tonight will cutoff whatever slim precip chances we already had and will in turn help lead to cooler days and nights into the weekend.
Widespread snow this morning in the mountains, and wet snow or mixed rain and snow in the lower valleys. Pcpn should become more showery in nature this afternoon then increase again tonight as a cold front comes through from west to east overnight. Slight chance thunderstorms with small hail after 02/00z as cold front pushes through. By this afternoon, colder air aloft moves over the area combined with strong forcing will favor the development of showers and a slight chance of thunderstorms along the cold front. The cold front will move through eastern Oregon this evening and into Idaho after midnight. Heavy rain, snow, graupel and thunder are possible with the passage of the cold front. Showers will taper off behind the cold front with clearing Friday afternoon.
146 PM CST Thu Mar 1 2018 A mesoscale ridge ("bubble-high") was progressing southeast with the trailing stratiform precipitation of the MCS. The cold front was entering central KY into northwestern TN.
130 PM CST Thu Mar 1 2018 A mesoscale ridge ("bubble-high") was progressing southeast with the trailing stratiform precipitation of the MCS. The cold front was entering central KY into northwestern TN.
The cold front also continues to sag southeast through AR, currently near Little Rock area, and has develop some showers along and just ahead of the boundary. Winds ahead of the front were from the south to southwest, then a switch to the west to northwest will be seen behind the cold front. Otherwise, clouds will start to thin and break up behind the cold front with the mixing and drier air filtering in as the high pressure builds southeast into AR. VFR conds wl return by tngt as high pressure blds into the region. Hi-Res model data cont to show that the primary area of rain wl gradually dcrs fm the west later this mrng as an upr lvl trof moves into the region.
303 PM CST Thu Mar 1 2018 Mid-afternoon temperatures across Southeast Texas on this first day of the month range from the lower 70s to around 80 across much of the area.
This feature appears to have a better plume of moisture to work with as parts of the area should receive 1 to 3 inches of new snow with the higher terrain potentially receiving up to 6 inches.
After that will have brief upper ridging as the next upper low spinning off the NW coast moves ashore Friday.
155 PM EST Thu Mar 1 2018 A cold front will move through late this afternoon and evening providing a chance of showers and a few thunderstorms ahead of it.
400 PM EST Thu Mar 1 2018 Cold front has made its way east of I-65 and continues to progress across central Kentucky. Winds should die down by late evening, but we'll hold on to just shy of 10 kt through the night under cold advection as high pressure builds in. Quiet weather and seasonable temps Friday into Friday night as high pressure settles over the Ohio Valley. Dry and seasonable conditions expected this weekend as Canadian high pressure noses south across the Ohio Valley, but under upper ridging.
320 PM CST Thu Mar 1 2018 General trend in the short term periods will see upper level ridging begin to build in. Not expecting anything dense as gradient winds are on the increase by the middle part of the night as an upper low off the Pacific Northwest coast begins to drive lee pressure falls to our west.
This wave is the precursor to a deep area of low pressure that will slowly come ashore along the west coast over the next few days. On Friday, plenty of sunny skies as south to southwesterly winds continue to pump in warmer air into the region. Some valleys will likely reach the low 60s.
Cold front and its associated band of showers is currently crossing Acadiana, have just passed LFT and expected to pass ARA between 18-19Z.
Second cold front about to push into the area with gusty winds and drier air. Will have fog and drizzle/freezing drizzle in the upslope areas after midnight. Will keep Wind advisory running for tonight in the higher terrain--above 3500 feet.
1053 AM MST Thu Mar 1 2018 An upper level ridge will be over the area today, with a weak disturbance moving across the state tonight.
1159 AM CST Thu Mar 1 2018 Water vapor imagery early today showed a northern stream trough coming out of the northern plains with another trough across the southern plains. Drying will occur through the day with the passage of the upper trough as skies clear from the west. With the ridge axis nearing the Mississippi River and moist ground from snow melt, will have to watch for fog formation during the early morning hours on Friday.
410 PM EST Thu Mar 1 2018 The cold front will continue to push to the east this evening. The cold front continues to move across the forecast area this afternoon. High temperatures will be in the low to mid 40s on Friday. This will lead to decent ridging developing across our area and dry conditions through the weekend.
254 PM MST Thu Mar 1 2018 Southwest flow aloft will prevail tonight and Friday as the upper level ridge axis shifts east of Colorado. The southwest flow will bring warmer air into the area with highs climbing into the 60s across northeast Colorado.
Winds will respond to the next western trough beginning tonight and especially tomorrow.
The final area of showers will build across the Great Valley around 23-01z as a strong cold front moves through the region.
Surface wise, a high pressure ridge lies on the Straits of Florida. A deep tropospheric high pressure cell elongated over our latitude and into the Atlantic and Gulf waters will be pressed southward and retrograde westward over the next several days.
317 PM CST Thu Mar 1 2018 Quiet weather will persist over the next day as an upper level ridge remains over the central US. Locations across the central state will be slightly cooler with highs only in the low 50s which is still well above normal for this time of year. Lows Thursday night will be in the upper 20s to low 30s, which is nearly 10 degrees warmer than the previous night.
A cold front continues to move southeastward across central AL and GA this afternoon, and will move across our area during the evening.
216 PM CST Thu Mar 1 2018 It's a bit cooler this afternoon in the wake of a front that moved through the region this morning, and with a bit more sunshine, as high clouds have finally begun to shift east of the area. By tonight, moisture return will begin as winds veer to the east- southeast, and could result in some low clouds/fog Friday morning, especially across portions of the Permian Basin and the Lower Trans Pecos. Weak ridging will develop over the Central CONUS on Friday between a departing trough over the Northeast and another potent trough coming ashore over the Pacific Northwest. At the surface, southerly flow will return, yielding temperatures in the 60s and 70s, several degrees warmer than today.
Temperatures are expected to remain cooler than normal. Strong closed low off the WA/OR coast persists with a moist southerly flow over the region. JW 18Z TAFS: A warm front has stalled over the eastern Columbia Basin this morning and is resulting in widespread rain and snow for KCOE/KSFF/KGEG/KPUW. Isolated -TSRA will be possible vcnty KPUW, this afternoon as a weakening cold front tracks through the area, but confidence is pretty low.
351 PM EST Thu Mar 1 2018 The latest surface map features deepening low pressure moving across Ohio, with a cold front aligned southwest, currently moving into eastern Kentucky. Aloft, a southern stream short wave trough is moving across the Ohio and Tennessee valleys, and a northern stream short wave is following quickly on its heels, moving across the Midwest region. Showers will gradually scatter out through tonight behind the front, with even a few flakes possible on the higher terrain across the southeast. Clouds will likely linger across the east into early Friday morning, before scattering out during the day as high pressure builds in throughout the column. A passing cold front will then bring another round of widespread showers to the area between 20 and 00z this evening.
A Variety of Hazards Possible Sun-Mon as a Potent Spring Storm Hazardous Weather: Fire wx will be critical or near-critical Fri Aloft: Heights were rising in NW flow as an amplifying longwave ridge was advancing thru the Wrn USA. Height rises will slow tonight into Fri as the ridge conts E and crests over the rgn. Light return flow will develop and gradually strengthen tonight as a new leeside trof forms and the pres grad tightens. A warm front will form NW-SE across cntrl Neb tomorrow with pres contg to fall over CO.
1015 AM MST Thu Mar 1 2018 Current surface map places weak high pressure across western South Dakota. Upper level ridge builds across the northern plains today as upper low approaches the Pacific Northwest.
1156 AM CST Thu Mar 1 2018 Cold front near a KMCB-KBTR line at 1730z, moving east at 25-30 knots.
MUCH COOLER THIS WEEKEND. The cold front will knocking on the doorsteps encroaching just north of the Altamaha River Basin this early evening. behind the cold front which will usher in a cooler and drier air mass to the area. High temps Friday will be 10 to 15 degrees cooler with northwest winds of 5 to 10 mph.
There is more to come however as regional radar shows over the lower MS valley into western TN/northern MS.
1129 AM CST Thu Mar 1 2018 A cold front was in the process of moving southeast across the Missouri Ozarks during the predawn hours. Brisk and gusty north winds will usher in a cooler and eventually drier air mass today. Highs over most areas should be in the lower to middle 50s.
404 PM EST Thu Mar 1 2018 Deep layered high pressure continues to hold over the region this afternoon.
250 PM CST Thu Mar 1 2018 Dry and quiet short term conditions, as a low amplitude upper ridge passes overhead tonight followed by slowly increasing southwest flow aloft Friday into the weekend as the next big cold upper low edges across the west coast.
1208 PM CST Thu Mar 1 2018 The back edge of the low clouds extended along and southeast of a K0F2-KBKD line as of 1730z.
At TAF issuance, a cold front was located from near KJSO, to between KASL and KSHV, to near KADF. /issued 1125 AM CST Thu Mar 1 2018/ Light showers continues across portions of southern Arkansas and Louisiana this morning, in wake of a cold front moving through the region.
218 PM MST Thu Mar 1 2018 21z surface analysis had warm front from central MT into central SD. Water vapour had upper ridge building over the northern Plains with upper low spinning off the northwest CONUS coast. Tonight/Friday, upper/thermal ridge peaks over the CWA with steady warm air advection as upper low moves into the northwest CONUS. Warm front will push through entire CWA tonight on 30-45kt southerly low level jet east of the Black Hills. Temperatures will be elevated tonight over the higher terrain/downslope zones as well as the downstream ridges from KIEN to KICR.
340 PM CST Thu Mar 1 2018 The large area of high pressure at the sfc this afternoon will slide across MN tonight, as low pressure organizes off the Rockies and the pressure gradient tightens overhead. Otherwise, the GFS has been an outlier painting light precipitation on the nose of the low level jet tonight into Friday.
227 PM CST Thu Mar 1 2018 The cold front has moved southeast of the PAH forecast, and with it, the precipitation.
Upper air analysis this morning showed a ridge bulging up from the Gulf with a shallow trough riding over it through the middle of the country. At the surface, there were a pair of cold fronts surrounding our CWA. The upper level ridge will remain in place during this period. The low level flow will start off northerly and turn to the east keeping the boundary layer dry. High temperatures Friday will also be cooler than Thursday.
253 PM CST Thu Mar 1 2018 Early-afternoon water vapor imagery depicted an intense mid-level trough off the Pacific Northwest coast with a downstream short- wave trough amplifying from the upper Great Lakes to lower Ohio Valley. Between these systems, a ridge axis stretched from the lee of the Canadian Rockies to central High Plains. The aforementioned upper-air system off the Pacific Northwest coast will gradually drift inland over the next 24-48 hours with the associated High Plains ridge edging east atop the Great Plains. In response to these developments, a lee cyclone will deepen over the High Plains with breezy to potentially windy conditions developing on Friday into the weekend. Initially, low- level moisture content will be limited with relative humidity values falling into the 25-30 percent range in snow-free areas Friday afternoon as temperatures warm into the lower to mid 50s.
This forecast update was only to expire the freeze warning as temperatures are quickly warming above freezing areawide. The region continues to be under the influence of the strong surface ridging building off to our east into the Appalachians. Expect return flow to slowly move in & the warming trend to continue, with a nice warm & dry afternoon in the lower 60s. Another cold night is on tap tonight with lows falling back into the low/mid 30s over the area.
Another cold night is on tap tonight with lows falling back into the low/mid 30s over the area.
/issued 406 AM CST Mon Nov 20 2017/ An upper level trough will translate across the area this morning. The downslope component will lead to warmer than normal high temperatures and decreased RH value. On Tuesday, an upper level ridge begins to amplify west of the area.
A mild day ahead as winds turn southwest and then west as low pressure slides southeast across Manitoba into NW Ontario. By 00z Tues, low pressure will be just nort of Kenora Ontario. As the low moves east colder air will drop south along with a wind shift to the northwest with wind speeds increasing to the 20 to 35 mph range.
530 AM CST Mon Nov 20 2017 100 AM CST High pressure is across the Ohio/Tennessee valleys early this morning, with low pressure digging southeast across the Canadian prairies. The high will only slowly shift to the mid Atlantic today, while the low will deepen as it moves toward Lake Superior. The low will continue through Canada just to the north of Lake Superior, therefore breezy southwest winds will continue, and with some increasing clouds overnight lows will hold in the mid to even upper 30s.
1015 AM EST Mon Nov 20 2017 Dry and cool high pressure will build across the area today. Moisture will return beginning Tuesday as weak low pressure develops over the Gulf of Mexico and bring isolated showers to the region Tuesday and Tuesday night. Upper trough will dive into the Gulf of Mexico tonight. Isentropic lift will interact with a stalled front to our south and is expected to provide some increase in lower to mid level cloudiness into portions of our forecast area late tonight from the south, with some indications of a coastal trough developing late tonight.
Above normal temperatures will prevail again today and tonight before another cold front ushers in more seasonable air on Tuesday. A ridge of high pressure at the surface will sink southward across the region on Tue night and early Wed bringing much drier air and light winds with more seasonable temperatures for late Nov. Another cold front will arrive late Fri into early Sat bringing more seasonable air back into the area with highs in the 50s on Sun. A cold front will move through KRSL/KSLN and KGBD late in the period with a wind shift and possibly some some mid clouds.