Aikyam-Lab/Synoptic-Bench huggingface dataset:
715 PM EDT Tue Oct 10 2017 The vis/cigs forecast is complicated due to a moist environment, scattered rain showers, and an approaching cold front. The cold front will lag behind and begin to enter the area tomorrow afternoon.
1127 PM CDT Tue Oct 10 2017 An upper level ridge is now strengthening over North Texas following last night's convection, which should bring VFR conditions and dry weather for the duration of this TAF set. /Issued 344 PM CDT Tue Oct 10 2017/ Mid and high level clouds generally southeast of a Breckenridge to Sherman line will continue to move northeast through the evening hours. Lows tonight will range from the lower 40s northwest to the mid 50s southeast.
We have considerable cloudiness across Louisiana stretching into Georgia with a general westerly upper flow over Central Alabama around elongated gulf ridging.
739 PM EDT Sat Aug 26 2017 Canadian high pressure will build across New England tonight and Sunday. Low pressure passes south and east of the area during the midweek period.
This along with waves of high clouds moving across should keep temperatures a bit warmer tonight in the lower to middle 60s at most places.
1155 PM CDT Sat Aug 26 2017 Northern trough is over Minnesota while the de-intensifying system to the south is now Tropical Storm Harvey and is dumping rain over eastern Texas which has led to flooding and flash flooding. Forecast challenge: Precipitation chances including convective prognosis for tonight through Sunday night The northern trough mentioned in the Synopsis section will deepen with its southeast progression towards the Badger State. This movement is going to bring a cold front or essentially cool front for Kansas through on Sunday. As previously discussed in the last issuance of the discussion, the cold front will move into an area of instability that could generate a few strong to borderline severe thunderstorms.
818 PM EDT Sat Aug 26 2017 The forecast area will be between a frontal boundary off the southeast coast and high pressure ridging southward along the Appalachians through Sunday. An area of low pressure will develop along the front and lift northeastward.
As of 3 PM CDT, temperatures across the Mid- South are in the lower to middle 80s at most locations.
Moist and unstable environment for periods of showers and thunderstorms wrapping over the area around the low level convergence to continue the flood threat especially in SW FL. A trough of low pressure will continue to drape across the state through Sunday morning. The low center will then start to push offshore of the NE FL coast by Sunday afternoon. Weak low pressure offshore the southeast U. coast at the start of the period with a trailing trough axis extending southwest across the central Florida peninsula combined with abundant tropical moisture (PW's in the 2.
In our area, high pressure will give way to an upper trough currently over northern Minnesota.
Water vapor imagery this afternoon shows a trough digging into the Upper Mississippi Valley region and Upper Great Lakes. The upper trough is forecast to close off a deep tropospheric circulation tomorrow as it moves south into WI.
855 PM PDT Sat Aug 26 2017 A very hot weather pattern is expected across the Mojave Desert Region much of the coming week as high pressure strengthens and holds over southern Nevada. Limited moisture trapped underneath the area of high pressure will lead to a slight chance of showers or thunderstorms over the mountains of southern Nevada and northwest Arizona each afternoon.
The clouds and winds should help to keep lows tonight about 3-5 deg warmer than last night, with upper 50s to low 60s expected. Likewise, high temps tomorrow will be a couple deg warmer than today. Strengthening 1029 mb high pressure over western Quebec and ridging sw across the central Great Lakes and into central IL was providing another nice late summer day to the area. Highs Sunday mostly in the lower 80s, ranging from 79F at Galesburg to near 85F at Lawrenceville where more sunshine possible. Chances of showers and thunderstorms spreads se toward I-70 during Sunday night as cold front moves se into central IL.
624 PM CDT Sat Aug 26 2017 High pressure will settle in from the north across most of the CWA tonight. A dominant upper ridge will remain over the Rockies through midweek, with a weak trough across the Great Lakes/New England.
A weak cdfnt will approach the area tonight as the low develops over the wrn Great Lakes region. With an expected delay in convection, have trended twd the warmer guidance for Sun. With winds diminishing tonight, have once again trended twd the cooler guidance.
A weak cold front will enter the far northern zones later Sunday afternoon, then track southward through the Texas Panhandle Sunday night.
High pressure ridge centered over the eastern Great lake states will continue to build southward as its center moves east into the New England states tonight. The pressure gradient does tighten a bit over the region as this low center strengthens but we should only see some increased winds Sunday.
The trailing cold front associated with this system stretched from central IA into central NE. It is hard to gage the coverage and strength of this complex especially since the low level jet is forecasted to be relatively weak. The upper trough responsible for the cold front will slide east into the Great Lakes through Weds which will allow for high pressure to keep the area dry and mild for late Aug with below avg Temps into mid week. Meanwhile, the ECMWF keeps the western ridge hts so strong that the system drifts northwest toward the TX panhandle by late week. For the 00z TAFs, the main focus is on the potential for scattered showers and storms near the TAF sites early Sunday morning into the early afternoon hours as a cold front moves into the region.
The highest rain chances remain acorss the far southeastern part of our area, where there is some potential for a portion of the outer rain shield from Tropical Storm Harvey to shift west into that area overnight. Otherwise cooler, more cloudy conditions will keep highs in the 80s.
A cold front extending southwest from an area of low pressure in west-central Minnesota will push across the state this evening. Secondary piece of forcing forcing moves into the northern CWA by midday into the afternoon Sunday as the upper low transitions further east into Wisconsin and the U.
The highest rain chances remain across the far southeastern part of our area, where there is some potential for a portion of the outer rain shield from Tropical Storm Harvey to shift west into that area overnight. Otherwise cooler, more cloudy conditions will keep highs in the 80s.
938 PM EDT Sat Aug 26 2017 High pressure over Ontario will move eastward to the New England States on Sunday.
723 PM EDT Sat Aug 26 2017 Dry conditions will persist through Sunday with lows tonight in the low to mid 50s and highs on Sunday in the mid to upper 70s.
948 PM EDT Sat Aug 26 2017 High pressure over southeastern Canada will bring fair weather and a chilly northerly flow through the remainder of the weekend.
The trailing cold front associated with this system stretched from central IA into central NE. It is hard to gage the coverage and strength of this complex especially since the low level jet is forecasted to be relatively weak. The upper trough responsible for the cold front will slide east into the Great Lakes through Weds which will allow for high pressure to keep the area dry and mild for late Aug with below avg Temps into mid week. Meanwhile, the ECMWF keeps the western ridge hts so strong that the system drifts northwest toward the TX panhandle by late week. For the 06z TAFs, the main focus is on the potential for scattered showers and storms near the TAF sites Sunday morning into the early afternoon hours as a cold front moves into the region.
702 PM CDT Sat Aug 26 2017 Clearing of the low clouds has reached the Red River and just a tad past it as of 23z. 500mb negatively titled trough will shift to over the next 6 to 12 hours moving over the arrowhead of Minnesota and with it the stronger forcing and precipitation. Overnight winds will turn to the NW and the saturated near surface layer will begin to dry out and with it the low stratus deck will erode from west to east. Conditions will improve on Sunday as upper low pressure shifts east across the Great Lakes. With departure of the upper low, the upper ridge rebounds across the area bringing more summer like temperatures across the region, with 80s in the west and upper 70s across the east.
Some fog around Crookston, and short range models hang the lower cloud edge very nr HCO-CKN-FFM thru Sunday morning, with still a push a bit west at times. 500mb negatively titled trough will shift to over the next 6 to 12 hours moving over the arrowhead of Minnesota and with it the stronger forcing and precipitation. Overnight winds will turn to the NW and the saturated near surface layer will begin to dry out and with it the low stratus deck will erode from west to east. Conditions will improve on Sunday as upper low pressure shifts east across the Great Lakes. With departure of the upper low, the upper ridge rebounds across the area bringing more summer like temperatures across the region, with 80s in the west and upper 70s across the east.
High pressure centered over the Northeast still influencing our weather locally. This result of broad sfc ridging influences across ern contiguous U.
Upper low will begin digging southeast into the northern Great Lakes region on Sunday, pushing cold front into the area by late afternoon or early evening.
1243 AM EDT Sun Aug 27 2017 Aviation High pressure will drift east tonight and Sunday and low pressure over the upper Midwest will move toward Lake Michigan.
Kept most the forecast elements in line with the previous forecast for the remainder of the overnight hours with the ridge building in. A building upper level ridge across the western U. This is based on a large ridge of high pressure over the West & a trough over the Great Lakes. The ridge will be flattened somewhat by a broad area of low pressure well to the north. Hot air under this ridge will drift into the area as the stationary boundary is pushed east.
704 PM CDT Sat Aug 26 2017 Strengthening 1029 mb high pressure over western Quebec and ridging sw across the central Great Lakes and into central IL was providing another nice late summer day to the area. Highs Sunday mostly in the lower 80s, ranging from 79F at Galesburg to near 85F at Lawrenceville where more sunshine possible. Chances of showers and thunderstorms spreads se toward I-70 during Sunday night as cold front moves se into central IL.
With the high centered over the Great Basin for at least a few more days, there is a climatologically favorable steering flow in place (at least for the Arizona portions of our forecast area). However, it looks like that high will help advect some drier continental air into Arizona leading to more of a "low grade" type of Monsoon situation wherein mountain storms fizzle as they move to the low elevations.
A cold front will drop south in the north-northwest flow late tonight/early Sunday morning. Will have the highest pops over the higher terrain. For the extended a 594 to 596 dm ridge will hover over the Utah and four corners region. The ridge will bring continued warm temperatures and a slight chance of afternoon convection.
736 PM EDT Sat Aug 26 2017 High pressure over southeastern Canada will bring fair weather and a chilly northerly flow through the remainder of the weekend.
Upper low in western MN with lead short wave moving across MN/WI now with bulk of precip in eastern MN into WI. The low clouds and drizzle will certainly affect western Wisconsin this evening. A few more showers are in central MN associated with the upper low. While the short wave is moving along, the upper low is slower and looks to intensify a bit tomorrow as another jet streak arrives in northern stream. Mid/upper ridging over the western CONUS builds toward the central CONUS during the first half of the upcoming week, and then retreats back southwest during the last half as a strong trough dives across northern Manitoba/Ontario and our flow locally becomes more zonal.
500mb negatively titled trough will shift to over the next 6 to 12 hours moving over the arrowhead of Minnesota and with it the stronger forcing and precipitation. Overnight winds will turn to the NW and the saturated near surface layer will begin to dry out and with it the low stratus deck will erode from west to east. Conditions will improve on Sunday as upper low pressure shifts east across the Great Lakes. With departure of the upper low, the upper ridge rebounds across the area bringing more summer like temperatures across the region, with 80s in the west and upper 70s across the east.
A strong upper level ridge dominates the western United States this evening.
809 PM EDT Sat Aug 26 2017 High pressure over Ontario will move eastward to the New England States on Sunday.
Clear and dry conditions are ongoing this evening as a ridge of high pressure continues to expand over the area.
542 PM MDT Sat Aug 26 2017 While Harvey continues to affect the Texas coast, we will continue to deal with high pressure. This high pressure will meander across the Great Basin through the next several days with little change from day to day. One of the reasons it's not moving is because of the high pressure over us which also won't be moving.
850 PM MDT Sat Aug 26 2017 Quiet evening with high pressure building over the Northern Rockies. Winds will continue to decrease overnight, turning more southerly or terrain-driven with high pressure overhead. Strong upper level ridge will dominate our weather the next couple days.
903 PM EDT Sat Aug 26 2017 An elongated area of low pressure remains over the central peninsula this evening with cyclonic flow noted on both surface observations and radar. The combination of deep tropical moisture and weak convergence from the low will maintain abundant cloud cover and a low chance for showers through the overnight. Better chances, along with some thunder, are expected over the west coast and Atlantic as the low splits and interacts with the warmer and more unstable air over the nearshore waters. Guidance indicates the lowest ceilings (IFR) across ISM-LEE-MCO-TIX corridor with the possibility of MVFR elsewhere. Proximity to weak tropical low pressure and continued deep moisture across the region will keep an above normal threat for NMRS showers and ISOLD-SCT storms in the forecast during the late morning and afternoon on Sunday.
741 PM EDT Sat Aug 26 2017 High pressure will allow for continued dry conditions through the weekend.
High pressure will remain in control over the Great Basin for the next several days.
705 PM CDT Sat Aug 26 2017 A low pressure system over central Minnesota this afternoon has produce a large area of rain with embedded thunder over the forecast area. This area of rain will slowly rotate northeast this evening, allowing precipitation chances to diminish on the west side of the trough axis on the north side of the low pressure system. Cool conditions with the cloud cover to continue tonight, and have kept mins in the low to mid 50s most locations. Sunday the low pressure system moves far enough east that we should be in a more showery pattern with the most coverage over the tip of the Arrowhead of Minnesota, and more coverage in the afternoon than the morning.
Otherwise cooler, more cloudy conditions will keep highs in the 80s.
High pressure centered over the Northeast still influencing our weather locally. Mid state region wx pattern consists of broad sfc ridging influences across ern contiguous U.
An elongated area of low pressure will be centered over north central Florida overnight.
Freezing level was at 16,400 feet, the -20C level at 27,100 feet and the wet bulb zero at 13,900 feet. Winds in the lower levels were light and variable with 10 knot winds not measured until 570 mb.
1027 PM EDT Sat Aug 26 2017 Canadian high pressure will build across New England tonight and Sunday. Low pressure passes south and east of the area during the midweek period.
Previous forecast remains on track with lows in the low to mid 70s.
Temperatures are a few degrees warmer as more moisture has moved in from the fringes of Harvey. Lows expected to be about the same south but a few degrees warmer northeast.
Temperatures continue to run a degree or two below normal and are in the lower to mid 80s for the most part. Thus, will maintain the low precip chance.
Storms will spread east over night with conditions not as favorable as you move off the higher terrain.
Surface cold front was analyzed from near Wayne to Columbus across northeast Nebraska at early afternoon, with another trough/wind shift just ahead of it into southeast Nebraska.
If these intense rain bands with these amounts occur over the metro areas, flooding could impact homes, roadways, and the highway system.
621 PM CDT Sat Aug 26 2017 Northern trough is over Minnesota while the de-intensifying system to the south is now Tropical Storm Harvey and is dumping rain over eastern Texas which has led to flooding and flash flooding. Forecast challenge: Precipitation chances including convective prognosis for tonight through Sunday night The northern trough mentioned in the Synopsis section will deepen with its southeast progression towards the Badger State. This movement is going to bring a cold front or essentially cool front for Kansas through on Sunday. As previously discussed in the last issuance of the discussion, the cold front will move into an area of instability that could generate a few strong to borderline severe thunderstorms.
1002 PM EDT Sat Aug 26 2017 High pressure will allow for continued dry conditions through the weekend.
755 PM EDT Sat Aug 26 2017 Aviation High pressure will drift east tonight and Sunday and low pressure over the upper Midwest will move toward Lake Michigan.
Large cyclonic circulation associated with this system will bring in very rich tropical moisture to interact with a stalled surface boundary/coastal trough right along the I-10 corridor.
Forecast appears to be on track with only slight modifications made to the maximum temperature grids for today to raise them a bit closer to the warmer trend in guidance and observations. /issued 326 AM EST Fri Nov 10 2017/ The expected cold front is currently moving through Central Florida. The front stays put for several days, as high pressure builds over the great lakes region and slowly shifts over New England.
359 PM CST Fri Nov 10 2017 Low-level ridging extending from Michigan southwest into Texas this afternoon will slide east tonight and Saturday, with associated south to southwest 850-700 MB winds continuing to draw moisture (and clouds) across Southeast Texas tonight. Cloud cover will help promote temperatures a few degrees warmer than this morning with highs in the mid 40s to lower 50s inland and mid 50s to low 60s along the coast.
301 PM CST Fri Nov 10 2017 Upper flow aloft will remain fairly zonal through the week ahead with an upper level ridge parked to the south of the region. Surface lee cyclogenesis will develop leading to breezy southwest winds and warmer temperatures with a quicker exit to the anticipated low stratus and fog.
With warmer temperatures in the central zones, this will fall more as a rain/snow mix or as rain. Farther to east temperatures will be cooler and will see a little more fall as snow, but the lift will be weaker and less will be falling.
Yesterdays cold front has dropped south of the Ohio River Valley this morning with plenty of cold air in the Midwest underneath the building ridge. A swath of mid/high clouds moving through the region has limited the cooling somewhat this morning, but even so, temps have dropped into the low 20s/upper teens.
1233 PM EST Fri Nov 10 2017 Dry Canadian high pressure will build across the region through Saturday.
234 PM CST Fri Nov 10 2017 Another chilly night is expected across the Mid-South as high pressure settles over the region. High pressure will shift east on Saturday allowing for surface winds to change to the south.
Strong ridge continues to build in from the north. This east to northeast flow will continue into Saturday bringing much cooler temperatures. Overnight lows tonight will drop into the 30s across most of north Georgia with some areas seeing freezing. At this time there is some uncertainty with the coverage of sub freezing temperatures so at this time will hold off on a Freeze Warning.
Early morning temperatures and dewpoints are both currently cooler than previously expected. And even though the circulation pattern on the cool side of the front has not been as conducive in bringing additional near surface moisture into the area, cooler temperatures are still producing T-Td spreads of 2 degrees or less across mainly the western sections of the forecast area. This should turn the wind direction more northwesterly which should help push the cooler air east and produce warm and dryer conditions that will move from west to east across the forecast area and dissipate the fog. Temperatures during this time should remain near or above freezing, so do not expect any freezing fog. Warmer temperatures with highs in the 50s and lows in the 30s along with dry conditions should remain in place through the remainder of the weekend.
Considering increasing moisture will push surface dewpoints up into the lower 40s(F) tonight, expect lows only down into the lower to mid 40s(F) toward early Saturday morning. Persistent cloud cover across central Kansas will limit highs to only the 50s(F) in the area Saturday afternoon with the lower to mid 60s(F) possible in extreme southwest Kansas where some sunshine may be possible behind an advancing frontal boundary. Saturday will then see yet another cold front sag southward into southwest Kansas in response to the aforementioned wave over the Pacific Northwest, sliding east into the Northern Plains. This along with lingering cloud cover may limit temperatures with highs varying from the upper 40s to mid 50s at the low end, to the upper 50s to mid 60s at the high end.
Warmer air aloft will mix down today and this combined with southwest winds should help temperatures warm into the 30s to lower 40s most places. Highs on Saturday will be similar to today or just a degree or two cooler.
248 PM CST Fri Nov 10 2017 As of 20Z Friday afternoon, a low amplitude, mid-level trough was traversing the northern Plains. At the surface, a broad anticyclone was centered over Lake Michigan. A surface cold front will encroach the area by dawn Saturday morning. Southerly winds could gust upward of 20-25 mph ahead of the cold front. Temperatures are expected to be warmer Saturday afternoon with highs ranging from the middle 40s in far northeast KS to the low 50s in central KS.
A moderate to strong pressure gradient between the high and low will gradually relax this afternoon across central North Dakota resulting in diminishing winds. Then a trailing cold front will bring another chance of light snow to the north this evening along with cooler. Latest surface analysis shows low pressure situated over southern Alberta with high pressure over Minnesota. Large temperature gradient for highs today from the lower 20s around the Turtle Mountains, to the mid 40s far southwest. Expect some light snow associated with the track of the low, but any accumulations will be confined to the far northern tier counties with mostly trace amounts, to maybe another tenth or two of accumulation.
250 PM EST Fri Nov 10 2017 Dry Canadian high pressure will build across the region through Saturday.
258 PM EST Fri Nov 10 2017 High pressure will build southeast into our region tonight into Saturday. The ridge aloft will continue to control our weather Saturday.
Max temperatures this afternoon will be strongly dependent on when the low clouds erode. The longer it takes for the clouds to dissipate, the cooler the eventual high temperature will be at a particular location. The next cold front is slated to move across the fcst area on Saturday, and short range models are in general agreement with this scenario.
06Z surface data has high pressure across the Midwest.