Aikyam-Lab/Synoptic-Bench huggingface dataset:
510 AM CST Sat Feb 3 2018 Although VFR will prevail through the TAF period, gusty southwesterly winds this afternoon will decrease by early evening and shift to the north behind a cold front. /issued 343 AM CST Sat Feb 3 2018/ A dry, breezy, and warm day is on tap today as an upper trough moves from the central Rockies southeast across the southern high plains this afternoon. We continue to side towards warmer temperatures on the Caprock and lower dewpoints, along with slightly stronger MOS guidance winds. A weak cold front will slip southward later this afternoon and early evening but only a weak gradient - surface winds should weaken fairly quickly this evening though around 10-15 mph northerly breezes may briefly follow the front.
456 AM MST Sat Feb 3 2018 Upper trof axis is currently dropping southeastward across northwest and central Colorado, spreading clouds and light snow across the mountains along/west of the Continental Divide. System is relatively fast moving, so accumulations will remain light with mainly 1 to 3 inches across the higher peaks above 11000 feet. Should be another windy day as this system crosses the state this morning and northwesterly winds spread down into the lower elevations. Cooling aloft today behind the system should result in temperatures around 5 degrees cooler out west vs yesterday. Meanwhile, better mixing on the plains should result in a temperatures a few degrees warmer than yesterday. Lee trof should keep westerly winds up across the southeast mountains and lower eastern slopes which will consequently keep min temperatures in the 30s for these well draining areas.
Not much rain has made it to the surface with obs only reporting traces so far, but as the coastal trough continue to set up across the waters, an increase in shower activity is expected. The trough will lift to the northeast along the coast this evening as a mid level short wave digs south across Oklahoma/Texas today and brings a weak frontal boundary with drier air filtering in from the west. Did extend possible sea fog through the late morning as air temperatures across the cooler shelf waters should take a bit longer to warm to allow the fog to erode. Warmer conditions are then in store for Sunday as H85 flow becomes westerly. Temperatures across the Brush Country are expected to reach into the lower 80s for Sunday.
548 AM EST Sat Feb 3 2018 High pressure will build off to the east offering dry weather and a warming trend today. A cold front will cross the region later Sunday, changing the rain and snow over to snow.
943 AM EST Sat Feb 3 2018 Not much to change from previous forecast this morning with high pressure over the Carolinas strengthening onshore flow. On Sunday a low pressure system will approach the waters and shift winds south to southwesterly.
915 MHZ Cape Wind profilers indicate ENE flow near 20 knots in the lowest 3 kft which will keep onshore winds breezy along the immediate coast today. Otherwise, dry and cooler weather for today with highs from the mid to upper 60s nrn areas to lower 70s across Okeechobee county and the Treasure Coast.
413 AM CST Sat Feb 3 2018 At 3 AM, a weak coastal trough was trying to develop along the middle and lower coast. High pressure over the Tennessee valley was ridging into Texas. That should change as low levels continue to moisten and the coastal trough strengthens. The disturbances coupled with weak lift from the coastal trough/warm front will trigger periods of showers today. Considerably warmer temperatures are expected on Sunday with some partial sunshine by afternoon over the north with cloudy skies likely hanging around toward the coast.
237 AM PST Sat Feb 3 2018 An upper level ridge of high pressure will control the weather across Southern California through the coming week.
/ISSUED 413 AM CST Sat Feb 3 2018/ At 3 AM, a weak coastal trough was trying to develop along the middle and lower coast. High pressure over the Tennessee valley was ridging into Texas. That should change as low levels continue to moisten and the coastal trough strengthens. The disturbances coupled with weak lift from the coastal trough/warm front will trigger periods of showers today. Considerably warmer temperatures are expected on Sunday with some partial sunshine by afternoon over the north with cloudy skies likely hanging around toward the coast.
/issued 304 AM CST Sat Feb 3 2018/ South winds have returned and have aided, along with some cloud cover, to keep temperatures a bit warmer to start the day today. This will result in a warmer day across the area with afternoon highs in the 50s and 60s. This will push a cold front south through the area.
607 AM EST Sat Feb 3 2018 Looking at mainly VFR flurries this morning across southeast Michigan, as a warm front lifts north today. Low level warm air advection under gusty southerly winds today will boost temps up into the low 30s across most of the forecast area. Mid level height falls will force a rather good response along the low-mid level frontal boundary as it gets driven across Lower Mi. In addition, a plume of deeper moisture is forecast to be transported from the Lower Oh Valley into this frontal system late tonight into Sunday. The highest amounts are likely across the Saginaw Valley/thumb where snow will begin much earlier.
/Issued 308 AM CST Sat Feb 3 2018/ Southerly winds have returned to the region, resulting in warmer overnight temperatures and an overall increase in low level moisture. A cold front is on track to pass through the region tonight.
Arctic Cold Front Will Affect Parts of Western Montana. Yesterday's precipitation has caused the low levels to become moist enough to create patchy fog. The second issue will be the threat of light freezing rain right along the leading edge of the cold air. The third will be a flash freezing of roadways, since temperatures could drop into the teens and low 20s in just a short period of time.
The lower tallies of rain should be found on the south shore from near New Orleans back toward Houma.
/Issued 219 AM CST Sat Feb 3 2018/ The upper air pattern will not change much through this forecast as a ridge holds just off of the west coast of the U.
357 AM MST Sat Feb 3 2018 A broad upper trough covers much of the CONUS, and a weak wave is passing over WY. Some freezing rain may be occurring as well.
High pressure aloft parked off the west coast will maintain a somewhat moist northwest flow across the Great Basin this weekend.
533 AM CST Sat Feb 3 2018 High pressure dominates the eastern half of the CONUS this morning as a few weak waves move through the Midwest in predominantly northwesterly flow. With the high pressure ridge sliding to the east, southerly flow has picked up and will continue to increase into the morning. The warmer airmass moving into the region will pull the high temperatures up into the upper 30s/40s this afternoon.
Mild and dry conditions are expected across the region during the next 7 days as high pressure dominates the weather pattern. Pictures from space showing a broad ridge of high pressure across the eastern Pacific Ocean with generally moist, onshore flow directed towards the Pacific Northwest. Over the next 7 days, the ridge will essentially dominate the weather pattern for northwest California and prolong dry and mild conditions.
Chattanooga Airport, TN 48 36 49 29 / 0 90 100 10 Knoxville McGhee Tyson Airport, TN 44 34 44 27 / 0 90 100 20 Oak Ridge, TN 45 33 45 27 / 0 90 90 20 Tri Cities Airport, TN 44 31 42 25 / 0 80 90 30 NC.
627 AM EST Sat Feb 3 2018 High pressure centered over NC and VA this morning will eject eastward this afternoon as low pressure moves from the upper Plains into the western Great Lakes. As the low moves eastward on Sunday it will push a cold front through the region with widespread rainfall.
Strong high pressure aloft near the West Coast will provide dry conditions with unseasonably warm daytime temperatures this weekend and during the upcoming week. This cloud band was associated with a deformation axis that existed between low pressure located near the Baja California spur, and strong high pressure aloft just west of the northern California coast.
A broad upper trough will brush by the area to the north today, pulling subtropical mid-level moisture into the area. The area of high pressure at the surface will be situated to the east of the area, allowing for weak southerly flow across the area and a modest moistening of the boundary layer. This will yield increasing cloud cover through the day and eventually shower chances this evening, as a cold front approaches the area from the northwest.
The first cold front moving through tonight will be of Canadian origin but the air mass is slowly moving south and is taking up a large piece of real estate within the CONUS.
213 AM CST Thu Feb 1 2018 Initial cold front had pushed through much of the area with a secondary front near the Missouri / Iowa line as of 2 AM. the secondary cold front will continue to advance south into the area.
336 AM EST Thu Feb 1 2018 A low pressure system is passing through James Bay early this morning with an associated lead cold front moving through Michigan. There is an area of lift causing these returns from a jet streak and stream of PV moving around the base of the upper trough. This precipitation is high based and is having a tough time fighting through the dry air in the lower levels of the atmosphere, which is resulting in mostly virga. Temperatures will decrease throughout the day as the secondary cold front pushes through Michigan.
329 AM CST Thu Feb 1 2018 Arctic high pressure continues to build across western and central North Dakota. Under high pressure, today will be clear, calm and cold.
359 AM CST Thu Feb 1 2018 A cold front was positioned from Northern Texas through South Central and East Central Oklahoma and across Northwest Arkansas and Southern Missouri early this morning. the cold front will continue to slide southward. this could allow for a few areas of light drizzle/light rain to develop within the higher terrain locations.
1027 PM CST Wed Jan 31 2018 Large upper low sits over Ontario with surface cold front just now starting to nudge into our far northwestern coverage area with a sharp temperature gradient noted behind it. Wind chill values approach advisory criteria near the Buffalo Ridge but after coordination with neighboring offices, will hold off on any headlines. High pressure will provide for dry conditions and sunshine.
339 AM EST Thu Feb 1 2018 Early this morning, virga was noted on radar imagery over central IN and stretching back into Missouri and Kansas ahead of an approaching cold front. This cold front is still progged to move through our region by late afternoon/evening. Would like to see more support from the high-res guidance before increasing forecast snowfall amounts much above 1".
1234 AM EST Thu Feb 1 2018 A cold front will cross the Ohio Valley on Thursday.
407 AM EST Thu Feb 1 2018 A weak storm system will bring warmer temperatures and scattered light rain and snow showers to NY and PA through this evening. Given the weak forcing observed in the mesoscale models, we are discounting the high QPF output. After the cold front passes Thursday evening, a polar blast out of Canada will reignite snow showers and activate the lakes.
By tomorrow evening, a cold front will be approaching and should be moving through VCT/LRD around the end of this TAF period. Tonight will be warmer. Through the period a cut-off upper level low will remain off shore of the Baja Peninsula while an upper trough moves across the northern Central Plains into the Great Lakes/Ohio Valley. A cold front will move south Thursday, pushing through South Texas on Thursday night. With high dewpoints over the cooler coastal waters tomorrow night anticipate areas of sea fog to develop, especially across the northern area bays and nearshore waters. As the cold front pushes closer to the coast though, anticipate fog to clear.
1244 AM EST Thu Feb 1 2018 A cold front will move through the Great Lakes region tonight into Thursday. With high pressure setting up to the southeast and an upper low in Canada, a warm advection pattern sets up across the region ahead of an approaching cold front for Thursday before midday. Today's mixing heights are relatively low and so as the low level jet leaves the region expect winds to die down. As the aforementioned cold front pushes into the region Thursday morning, there won't be much of a diurnal curve to this event, but rather more of a slowly falling temperature trend Thursday.
The exception could be in the northeastern plains of the state early Thursday morning where a surface cold front could initiate low stratus cloud development. A backdoor cold front will drop into northeast New Mexico tonight and across the remainder of the eastern plains Thursday. High temperatures across the plains will range from 15 to 25 degrees cooler than today.
High pressure will continue to pull away from the region overnight allowing for increased high and mid level clouds. a cold front will move in.
105 AM EST Thu Feb 1 2018 A weak storm system will bring warmer temperatures and scattered light rain and snow showers to NY and PA through this evening. Given the weak forcing observed in the mesoscale models, we are discounting the high QPF output. After the cold front passes Thursday evening, a polar blast out of Canada will reignite snow showers and activate the lakes.
Timing of wind shift with cold front. A cold front that extended near a KFSM-KSPS-KTCC line at 01/05z will continue to move southeast and should reach the Metroplex TAF sites 13-15z and through KACT 17-18z. /Issued 314 PM CST Wed Jan 31 2018/ It has been a warm and breezy day, but winds will diminish this evening and temperatures will be a little cooler tomorrow behind a cold front that sweeps through most of the area during the morning hours. Behind the front, winds will become northerly and highs will only reach the lower 60s along the Red River to the lower 70s in the southern zones. Lows will drop below freezing in the northwestern zones but only reach the mid 40s across the south.
326 AM CST Thu Feb 1 2018 Broad troughing over the central/eastern portions of the CONUS combined with an upper level ridge to our west will keep the FA under northwest flow for the entire forecast period.
247 AM CST Thu Feb 1 2018 A big change across the region since Wednesday evening, as a strong cold front pushed through the region, dropping temperatures 20 to 30 degrees in the past 12 hours. Temperatures are in the lower teens to single digits in many areas, with streaks of flurry producing stratus persisting.
Nighttime lows should be 5-10 degrees warmer than the previous night as easterly flow continues to modify the air mass across the area. An area of high pressure moving into the western portion of the Atlantic will continue to dominate the weather across South Florida for tonight and tomorrow. The region will remain on the southern side of the high pressure which will allow for the easterly flow to continue. Low temperatures will range from the upper 40s across the the northwestern interior to the lower 60s across the east coast metro areas.
Wind gusts could will likely be in the 25 to 35 mph range, especially over the high terrain of the west and along much of Lake Superior. Overall snowfall totals are not expected to be overly impressive as the DGZ is expected to drop down to the lowest levels of the atmosphere. A 500 mb trough remains over the area this forecast period with cold air and a prolonged lake effect snow event. In the extended, GFS and ECMWF show a broad 500 mb trough 12z Sun with cold air. This trough and cold air remains through Thu with a prolonged lake effect snow event and below normal temperatures for this forecast period. Gale warnings and heavy freezing spray warnings are up across Lk Superior.
259 AM CST Thu Feb 1 2018 Non-diurnal falling temperatures will be the main weather story for today as a secondary cold front pushes through the region.
257 AM CST Thu Feb 1 2018 Cooler temperatures expected today compared to yesterday with highs in the 40s and 50s.
Could see showers developing around midday mainly across southwest Arkansas as instability increases ahead of low to mid-level trough deepening in the vicinity of the front. High pressure building south behind the front will allow for an enhanced pressure gradient with north winds increasing to around 15 to 20 mph from mid to late afternoon through the evening. High pressure to bring a reinforcement of cooler air with overnight lows tonight ranging from the 30s to lower 40s across the region.
Ridge axis of high pressure over the west Atlantic will gradually shift southward, eventually settling across central Florida into tonight. Warming trend will continue, with highs in the low-mid 70s today and overnight lows in the low-mid 50s.
1056 PM MST Wed Jan 31 2018 Dirty northwesterly flow is well established over eastern Utah and western Colorado this afternoon as a weak cold front passes over the northern half of the forecast area. Still, given the increased clouds, daytime highs further north are trending slightly cooler today. As the previous forecaster anticipated, areas along and south of the I-70 corridor have been trending warmer with the most impressive 24 hour jump occurring at Gunnison, Colorado - who, as of 1 PM, was sitting at 50 degrees. 18 degrees warmer than this time yesterday. Overnight lows tonight will be several degrees warmer given the lack of radiational cooling. The overall intensity of showers should remain on the light side with no hints of any sort of banding yet on the high resolution models.
There is a cold front currently moving across the area with rain and snow showers, mainly across the north. This system will exit the area tonight, leaving slightly cooler temperatures in its wake. There will be a brief period of dry weather tonight and Saturday morning as a transitory ridge builds into the region.
Winds will curl to the north tonight before shifting back by to a southerly direction tomorrow as lee troughing develops. As for temperatures, lows are expected to range from around freezing across west central Kansas to low 40s across south central Kansas.
204 PM EDT Fri Apr 23 2021 High pressure and a dry air mass over the area through this evening along with continuing elevated fire danger. Clouds will begin moving in late this afternoon as a strong low pressure system moves through the Gulf States.
A warm front will begin lifting northward into the CWA this evening into tonight, with a cold front eventually dragging east through the CWA late Saturday afternoon. Locations along the Highway 84 corridor will see the better threat of severe storms. Much of this pends on whether our airmass can recover fast enough, before the cold front itself pushes through.
1110 AM CDT Fri Apr 23 2021 Summary: Widespread rain showers are expected today as low pressure crosses the area. Tonight, rain will transition to snow as temps drop below freezing. The higher elevations of the Arrowhead and portions of northwest WI will see slightly higher amounts of 1-1. This low will bring widespread rain across the CWA throughout the day today. As temps drop below freezing tonight, expect rain to transition over to snow. This is due to sub-freezing temps lasting into tomorrow morning in these areas as well as a longer residence time within the area of precip.
358 PM EDT Fri Apr 23 2021 Dry weather will continue tonight as high pressure moves east. Low pressure advancing across the Tennessee Valley is forecast to bring widespread showers Saturday into Saturday night.
(This evening through Saturday) With the approach of an upper trough from New Mexico, isolated to scattered showers and thunderstorms continue to develop across some of our eastern countie this afternoon, ahead of a dryline. As the upper trough shifts quickly east across the southern Plains and Texas, a weak cold cold front will move south across our area late tonight and early Saturday morning. Highs will be in the mid to upper 70s across northern and eastern parts of our area, and in the lower 80s across our southern counties and southern Concho Valley. (Today and tonight) Low level moisture continues to stream north into the area, ahead of an approaching upper level trough.
347 PM EDT Fri Apr 23 2021 Saturday will be warmer and dry as we remain under a ridge of high pressure.
* Synoptic Overview: Mid level trough approaching the Panhandles will provide sufficient lift for storms this afternoon and evening. A cold front this evening will allow for potentially a second round of storms, however they are not expected to be severe. LCLs across the east could be down to 500m, with effective bulk shear in the 30-45kt range, and while the low level wind profiles are not conducive, there's enough going on that we can't rule out an isolated tornado. At initiation time storms should start to fire up in the northwest, closer to the cold front (non-severe), as well as just east of Amarillo (severe threat),and expand to the southeast.
Today and Tomorrow: A cold front is currently located in the forecast area. A re-enforcing mass of cooler air will move into the area tomorrow, but will primarily impact the northern counties of the forecast area. Locations north of the Platte River and Omaha are likely to be a few degrees cooler tomorrow while locations south of that line will be a few degrees warmer. Winds associated with the cooler air will be breezy at 10 to 15 mph from the northwest with gusts around 20 mph.
411 PM EDT Fri Apr 23 2021 Dry weather is expected through part of Saturday under high pressure.
Later tonight rain will transition into snow as temperatures drop below freezing.
This feature has brought a more in the way of clouds/ice crystals aloft to seed the lower levels with most precipitation this morning falling as snow. Hoenisch Light freezing drizzle and or snow is expected to persist through the morning hours today, with gradually improving conditions this afternoon.
Models show high pressure building in now through this evening. By Saturday morning the ridge axis aloft will move east over the Wyoming border and precipitation will start on our western edges with the next system moving into the area.
Weak high pressure will move over western Montana and central Idaho tonight, bringing a general decrease in shower activity. The one exception is across far northwest Montana near the Continental Divide where a weak boundary of cooler Canadian air remains in place. The upper level flow becomes more southwesterly on Saturday, ushering in a wave of moisture ahead of a trough of low pressure along the west coast. Snow levels will rise through the day to between 5000 feet (across northwest Montana) to near 7000 feet (across southwest Montana and Lemhi County Idaho), meaning only the higher terrain will receive snowfall.
Morning satellite showing thin high clouds across southeast Oregon in advance of an approaching low pressure system.
Thompson (Today and tonight) Positively tilted, high amplitude trough moving into the great basin is handled very similarly by models, approaching our region this afternoon and evening. With intensifying mid-upper level jet progressing out of the base of the trough across northern Mexico into Texas late today, trough takes on a more neutral/longitudinal orientation.
A dearth of moisture prevents precipitation for most, but south central South Dakota could see a dusting of snow as the cold front pushes through during the early AM hours Saturday.
332 PM EDT Fri Apr 23 2021 High clouds around today have had a minimal impact on the temperatures, as maxes still have had no problem reaching into the low to mid 60s with southwest-west winds gusting up around 30 mph at times.