Aikyam-Lab/Synoptic-Bench huggingface dataset:
351 AM CDT Sun Sep 20 2020 Upper level low will bring a weak cold front across the region today, with the results being a few showers and gusty winds while temperatures remain mild in the 70s. A developing upper low is currently placing a trough in eastern MT and parts of western ND. Speaking of winds, models forecasting strong winds at the 850 mb layer as the low becomes tightly wrapped and stacked this afternoon. Lows tonight may be slightly cooler in the 40s and 50s, but still near normal.
Ludwig 1137 PM MDT Sat Sep 19 2020 (20/06Z TAF Period) Low pressure trough over the region continues moving eastward tonight and Sunday. /ISSUED 600 PM MDT Sat Sep 19 2020/ An upper level trough will continue to move through the northern Rocky Mountains tonight and into Sunday. A surface cold front associated with the upper trough pushes through central Montana by late this afternoon with gusty westerly winds developing behind the front and continuing through the remainder of this weekend.
247 AM CDT Sun Sep 20 2020 Surface ridging conditions will hold today, with another sunny (but hazy) day in store. Expect afternoon temperatures near or perhaps a touch warmer than yesterday.
High pressure over the eastern Great Lakes will build to New England through Monday.
1105 PM CDT Sat Sep 19 2020 (This evening through Sunday) High pressure ridge aloft shifts eastward as an upper trough progresses east from the Pacific NW.
1021 PM CDT Sat Sep 19 2020 The relatively benign pattern continues for the area with seasonal temperatures in the lower 70s for highs and 50s for lows. Winds have shifted to the southeast today and increased slightly as the mid and upper level ridge builds into the area allowing a southerly flow to develop in the low levels.
An upper level trough currently located over Montana is moving east and still deepening. The strengthening of that trough will lead to an increase in the surface pressure gradient and result in stronger winds today.
Highs on Monday should reach the lower to middle 70s, except 60s lakeside.
329 AM EDT Sun Sep 20 2020 High pressure over the eastern Great Lakes will build to New England through Monday.
1053 PM CDT Sat Sep 19 2020 High pressure will continue to slide east through the period, with the pressure gradient increasing late tonight and Sunday. The large scale pattern will evolve from a serpentine zonal flow to a modest central CONUS ridge by midweek, with more uncertainty by the end of the week as an upper trough works toward the west coast and a stronger Pacific jet tries to push into the coast.
Forecast soundings continue to indicate dry subcloud layers and total liquid precipitation at the surface is not expected to exceed a tenth of an inch, even in the highest terrain.
Ridging will produce light winds less than 10 kts. Chattanooga Airport, TN 78 53 77 53 76 / 0 0 0 0 10 Knoxville McGhee Tyson Airport, TN 75 50 75 51 75 / 0 0 0 0 0 Oak Ridge, TN 76 50 76 51 77 / 0 0 0 0 0 Tri Cities Airport, TN 72 44 73 45 73 / 0 0 0 0 0.
Upper level ridging currently over the region will exit the area tonight as a trough approaches. This trough will swing across the area on Sunday, with a more zonal pattern setting up Sunday night. At the surface, breezy conditions will continue across the eastern part of the CWA tonight into the day Sunday as a decent pressure gradient remains between an exiting high pressure system and an approaching low/frontal boundary and a 40-50 knot low level jet develops. At the surface a weakening cold front will be over eastern SD Monday.
136 AM EDT Sun Sep 20 2020 Canadian high pressure will allow for fair chilly weather with fairly widespread frost overnight and Sunday night inland from the lakes. High pressure over the St Lawrence valley will keep fair chilly weather in place through the rest of the weekend. High pressure will remain across the eastern Great Lakes Monday and Monday night as Hurricane Teddy moves north and well off the New England coast. Warmer temperatures will enter the region Monday with afternoon highs getting into the 60s. Temperatures will also be warmer overnight with lows in the mid to upper 30s across the higher terrain to the low to mid 40s across the Lake Plains.
406 AM EDT Sun Sep 20 2020 High pressure will continue to extend across the area into the middle of the week. Temperatures will get a few degrees warmer than yesterday. Temperatures will be in slow moderating with both lows and highs being a few degrees warmer than the previous 24 hours.
1251 AM EDT Sun Sep 20 2020 Dry and cool conditions will prevail throughout the week under high pressure.
357 AM EDT Sun Sep 20 2020 Dry and cool conditions will prevail throughout the week under high pressure.
Low temperatures have been cooler than NBM has suggested in the mornings and will stick with lower guidance through Mon AM. One thing we are more certain of is Monday being a very mild day, most likely the coolest day of the forecast period before our Summer ridge returns.
Aloft, an upper level ridge sits over the region staving off inclement weather for the time being. The overnight lows will be in the 40s due to a warmer air mass being in place, no frost expected. Sunday night a weak cold front will slowly move over the Northland bringing some light rain showers over the region. On Monday the cold front stalls and weakens, placement of the stalled boundary is still a bit contested between the models but the Northland could see some lingering light rain in NW WI. Additionally, the upper level trough that helped push the cold front into the region will also aide in clearing out the smoke aloft from the fires out west.
1132 PM CDT Sat Sep 19 2020 Continued quiet and cooler in the short term with ridging remaining overhead. An upper trough will move through midweek with rain chances dependent on how much moisture makes it into the area from remnants of TS Beta.
Models in good agreement that energy aloft will get cut off by late morning as the upper level trough across the eastern U. shifts further east allowing ridging to begin to build into the area.
344 AM CDT Sun Sep 20 2020 (Issued 344 AM CDT Sun Sep 20 2020) Today through Monday: Strong high pressure centered over the northeast United States will remain fairly stationary through Monday, while weakening a bit. This high will largely keep clouds away across southern Wisconsin through tomorrow, while southerly winds here on the west side of the high will result in warming temperatures.
The upper trough that brought the latest round of precipitation and wind to the area is currently ejecting across Wyoming and eastern Montana, with Utah under a slightly cyclonic westerly flow aloft. The surface cold front has stalled from just south of Milford to Green River, and will continue to weaken nearly in place through the night. Otherwise, clearing skies and the cold airmass now in place will bring much cooler overnight mins to the area, especially across northern and central Utah. Some frost will be possible across some of the higher valleys of northern Utah, otherwise most valley temperatures should remain above freezing.
High pressure remains in control over the state with only some SCT/BKN low/mid clouds entering SE AR during the overnight period. High pressure and clear skies will continue across the area. These lighter wind will allow for temps to drop to near or even a few deg cooler than seen this Sat morning. though slightly warmer conditions will be seen for Sun afternoon.
Today through Monday Zonal flow today will turn southwest on Monday in response to a longwave trof beginning to build into the Pacific Northwest. Highs today in the mid 70's to the lower 80's will jump into the mid to upper 80's on Monday due to the southwest flow.
314 AM EDT Sun Sep 20 2020 A large area of high pressure will dominate out weather for most of the week. Weather is quiet today and tonight as high pressure stays in place from New England into the Carolinas. Fog/low clouds along the southern Blue Ridge also will be gone by 9am. Lows in the foothills and piedmont will be in the lower 40s. High pressure dominates the forecast period, with its center situated over the New England states, leaving us in a classic wedge set-up, minus the clouds/mist.
Synoptically, ridging surface and aloft with dry conditions and slightly below normal temperatures.
Temperatures will only reach the low 70s, and humidities not get below 20 percent. Temperatures will rebound a bit on Monday as weak upper ridging and downslope winds returns to Montana. Temps will return to the low 80s and humidities back to the upper teens, though winds will stay relatively light.
222 AM CDT Sun Sep 20 2020 High pressure remained sprawled out from Oklahoma into the eastern Great Lakes region. Today, high pressure will continue to provide the area with pleasant fall-like weather.
1111 PM CDT Sat Sep 19 2020 High pressure will continue to dominate the weather across the Midwest the next few days.
305 AM CDT Sun Sep 20 2020 304 AM CDT An upper ridge axis centered along the mid and upper Mississippi River Valley this morning will drift to the northeastern U. through Monday while the area remains placed between high pressure over the eastern CONUS and broad low pressure across the western CONUS. A fairly thick area of western wildfire smoke trapped under the ridge will drift over the area today through at least Monday.
419 AM EDT Sun Sep 20 2020 After some morning clouds, high pressure will allow for clear skies and cool temperatures through tonight. Becoming sunny this afternoon as high pressure builds over our region with light winds. High pressure center over our region and with light winds and a clear sky, more chances for frost and freeze conditions.
257 AM EDT Sun Sep 20 2020 Synopsis/Discussion/Marine - Rather cold early this morning - Becoming milder this week - Rather cold early this morning High pressure is producing excellent radiational cooling conditions early this morning with clear skies and calm winds. - Becoming milder this week Temps will undergo a gradual moderating trend through the early to middle portion of the upcoming week as southeast to southerly return flow develops on the back side of the departing ridge.
135 AM CDT Sun Sep 20 2020 An inverted trough has developed across Middle Tennessee that is attached to TS Beta, although a ridge of high pressure is situated to our west and we don't expect anything more than some mid and high clouds across the region today.
For tonight, a weakening cold front will move into the area. Things may also be a little breezy on Monday as the area remains in a tight pressure gradient between high pressure to the east and lower pressure to the northwest, though the gradient and gusts won't be quite as strong as the previous day.
There still remains uncertainty in that a frontolytic boundary is situated across the north gulf and interacting with the circulation of Beta to impart an isentropic lift process in what is known as a Predecessor Rainfall Event (PRE) whereby the moisture is provided by the tropical cyclone into another teleconnected region of dynamics, in this case the frontal zone draped over southern Louisiana. While model guidance continues to suggest the cyclone should move west, the satellite imagery shows southwesterly shear transporting the deeper convection and rainfall lift over the frontal zone over southeast Louisiana.
315 AM CDT Sun Sep 20 2020 At the start of the week, high pressure was centered over the northeast US and TS Beta is over the western Gulf of Mexico. High pressure over the northeast US will continue to keep east to northeast surface winds across the area through tonight. As the ridge axis shifts to our east winds become more southeasterly on Monday with temperatures inching a degree or two warmer.
1141 PM MDT Sat Sep 19 2020 The upper level trough and surface cold front remain on track this afternoon as do the gusty winds ahead of the front. By daybreak Sunday, the front will have scooted well eastward while the H5 trough will be just moving over the Continental Divide. For the northern valleys, not much change to the overnight lows (that happens Monday morning) but daytime highs will be about 5 degrees cooler than seen today.
Upper level high pressure remains intact, with zonal flow over the FA.
Today's weather will be much the same, though with afternoon temperatures slightly warmer than yesterday. Temperatures will rise slightly warmer on Monday, but remain relatively close to seasonal averages.
Winds ease Sunday evening as upper low tracks into the Dakotas. Ridge builds back in through the upcoming week with warmer temperatures and very low chances for rainfall. Gusty winds continue for area terminals behind the passing cold front earlier this evening, but look to ease a bit before picking back up tomorrow mid-morning. Low pressure that is causing these winds currently over Challis Idaho with cold front from Meeteetse to Evanston Wyoming. Cooler temperatures Sunday will aid in higher humidity and decreased fire weather conditions.
SHORT TERM (Now through Monday): TS Beta is making for a challenging forecast situation along the lower TX coastline today. A 500 mb ridge is expected to build east over the southeastern U. In addition, as some of the higher level cld cover from Beta starts moving into the area as the storm gets closer to the TX coast, this will also tend to hold the high temps down a bit in combination with the milder northerly surface flow.
Minimum RH amounts hover around 12 to 20 percent in the valleys with 20 to 30 percent in the higher elevations.
Temps will again be above average with highs in the mid 80s to lower 90s along the I-25 corridor, in the upper 80s and lower 90s over the southeast plains, in the mid 70s to around 80 in the high valleys, and mostly in the 70s in Teller County. Overnight low temps should mostly be in the lower to mid 50s over the southeast plains, with 40s in the high valleys and Teller County, but there should also be some upper 30s in portions of the San Luis Valley.
1046 AM EDT Sun Sep 20 2020 High pressure will guarantee fair but cool fall-like weather today. High pressure will continue to dominate the northeast for the foreseeable future. With a strong inversion setting up and increasing flow above the inversion, this will yield increasingly southeasterly flow over the warmer lakes overnight. Additionally, based upon how low the inversion looks to set up, some of the higher spots along the Chautauqua Ridge will likely remain a bit breezier overnight. All of this said, even with a bit warmer night, frost and freeze headlines have still been issued for the interior Southern Tier and North Country where the growing season is still ongoing.
651 AM EDT Sun Sep 20 2020 High pressure will continue to extend across the area into the middle of the week. Temperatures will get a few degrees warmer than yesterday. Temperatures will be in slow moderating with both lows and highs being a few degrees warmer than the previous 24 hours.
Upper level low will bring a weak cold front across the region today, with the results being a few showers and gusty winds while temperatures remain mild in the 70s. A developing upper low is currently placing a trough in eastern MT and parts of western ND. Speaking of winds, models forecasting strong winds at the 850 mb layer as the low becomes tightly wrapped and stacked this afternoon. Lows tonight may be slightly cooler in the 40s and 50s, but still near normal.
Expect high pressure aloft to transition across the local area this evening. with breezy southerly winds near the surface as the local area remains in between low pressure along the lee side of the Rockies and high pressure to our east. expect a continuation of dry weather and seasonably warm temps as high pressure re-intensifies across the local area.
At the start of the week, high pressure was centered over the northeast US and TS Beta is over the western Gulf of Mexico. High pressure over the northeast US will continue to keep east to northeast surface winds across the area through tonight. As the ridge axis shifts to our east winds become more southeasterly on Monday with temperatures inching a degree or two warmer.
644 AM CDT Sun Sep 20 2020 High pressure will dominate through the TAF cycle. Aloft, an upper ridge will be located over the Srn plains today providing NW flow across the Ern two-thirds of the CONUS. This ridge will slowly work its way Ewrd, pushing E of the MS River by Monday. PoPs return to Srn AR Monday afternoon along and S of a warm front defined by much higher moisture content rather and large increase in temperatures.
532 AM EDT Sun Sep 20 2020 Seasonably strong high pressure system to bring vfr conditions through the TAF period.
Early this morning, an upper trough remains over the Intermountain West as noted in water vapor imagery. This will somewhat weaken the ridge over our area through tonight as the trough swings northward, but won't have much of an impact on our weather. We remain between low sfc pressure in the lee of the Rockies and high pressure to our east, so increased southerly flow keeps breezy conditions through the day with gusts of 25-30mph possible. This will continue to gradually increase temperatures in the low levels, so this in addition to decent mixing will bring highs a couple degrees warmer than yesterday in the low 80s for most, upper 70s in far eastern KS. Lows will be similar to the last couple days in the low to mid 50s without a change in air mass.
This will also push through some stronger surface winds from the west behind the cold front.
1011 AM EDT Sun Sep 20 2020 A large area of high pressure will dominate out weather for most of the week. Weather is quiet today and tonight as high pressure stays in place from New England into the Carolinas. Lows in the foothills and piedmont will be in the lower 40s. High pressure dominates the forecast period, with its center situated over the New England states, leaving us in a classic wedge set-up, minus the clouds/mist.
Upper trough and associated cool front continues to push east across the region this morning. Otherwise, mean NE PAC upper trough will support semi-unsettled near zonal flow across the NW-ncentral CONUS. Elevated fire wx conditions expected again today with dry northwest winds behind the cold front. Progressive pattern continues through the week with a cold front passage about every 2-3 days, but moisture will remain limited. Elevated to potentially critically fire danger expected at times, mainly with the approach and passage of each cold front.
High pressure over New Mexico will lead to more nice weather today with warm temperatures, low humidity, and light winds.
/issued 322 AM CDT Sun Sep 20 2020/ Upper ridging continues to be the main story across the west Texas region. Surface ridging should once again let winds become light after sunset allowing temps to cool into the 40s/50s. This will result in surface lee troughing for most of this week.
1050 AM EDT Sun Sep 20 2020 As of mid-morning, skies remained clear and sunny and temperatures were warming up into the lower 60s in most locations. Expect clear skies and cooler than normal temps to continue today and tonight. Low-level thickness progs suggest max temps this afternoon will be about 2 deg warmer than Sat.
625 AM CDT Sun Sep 20 2020 An upper level ridge is centered over the upper Great Plains this morning and will shift east during the day. Although cloud cover will increase as the trough moves through, precipitation chances are slim. Afterwards, the dominant pattern for the remainder of the forecast period is the upper level ridge.
621 AM CDT Sun Sep 20 2020 304 AM CDT An upper ridge axis centered along the mid and upper Mississippi River Valley this morning will drift to the northeastern U. through Monday while the area remains placed between high pressure over the eastern CONUS and broad low pressure across the western CONUS. A fairly thick area of western wildfire smoke trapped under the ridge will drift over the area today through at least Monday.
1027 AM EDT Sun Sep 20 2020 High pressure will continue to extend across the area into the middle of the week. Temperatures will get a few degrees warmer than yesterday. Temperatures will be in slow moderating with both lows and highs being a few degrees warmer than the previous 24 hours.
High pressure remained sprawled out from Oklahoma into the eastern Great Lakes region. Today, high pressure will continue to provide the area with pleasant fall-like weather.
402 AM CDT Sun Sep 20 2020 Main challenge for the short term will be approaching upper trof, and pcpn potential today. Very nice looking trof in wv imagery this morning over the northern Rockies. This trof will shift northeast today, as a s/w within the trof moves across the Dakotas. Once upper trof moves off to the east toward evening, am expecting the rest of the forecast to be quiet/dry. The elevated smoke of recent days will probably get pushed off to the east later today as upper trof crosses the region and shifts the mid level winds to more of a westerly direction.
924 AM EDT Sun Sep 20 2020 Strong Canadian high pressure will ensure cool, dry, and fall- like weather today under mostly sunny skies. With the additional clouds high temperatures look about a degree or two cooler now. Previous Discussion Below Quiet and cool Fall weather pattern continues through the near term period as high pressure remains in control.
748 AM EDT Sun Sep 20 2020 Dry and cool conditions will prevail throughout the week under high pressure.
618 AM CDT Sun Sep 20 2020 Main challenge for the short term will be approaching upper trof, and pcpn potential today. Very nice looking trof in wv imagery this morning over the northern Rockies. This trof will shift northeast today, as a s/w within the trof moves across the Dakotas. Once upper trof moves off to the east toward evening, am expecting the rest of the forecast to be quiet/dry. The elevated smoke of recent days will probably get pushed off to the east later today as upper trof crosses the region and shifts the mid level winds to more of a westerly direction.
529 AM MDT Sun Sep 20 2020 Upper level trough continues to push through the region early this morning with mid-level clouds as across eastern Wyoming and western Nebraska.
632 AM EDT Sun Sep 20 2020 A large area of high pressure will dominate out weather for most of the week. Weather is quiet today and tonight as high pressure stays in place from New England into the Carolinas. Fog/low clouds along the southern Blue Ridge also will be gone by 9am. Lows in the foothills and piedmont will be in the lower 40s. High pressure dominates the forecast period, with its center situated over the New England states, leaving us in a classic wedge set-up, minus the clouds/mist.
An inverted trough has developed across Middle Tennessee that is attached to TS Beta, although a ridge of high pressure is situated to our west and we don't expect anything more than some mid and high clouds across the region today.
Beta has started to slowly move once again and a slow progression towards the central Texas coast is expected as high pressure builds to the north of the storm. As Beta moves west toward the central Texas coast, it will begin to slow down as the high retreats to the north and east.
352 AM MDT Sun Sep 20 2020 The srn end of an upper level trough, over the nrn Rockies, is moving across nrn CO early this morning. This low will then move east southeast as a weak boundary affects the plains.
Weak upper level ridge over the area through tonight. Weak upper level trough moving through Monday night.
929 AM EDT Sun Sep 20 2020 The stalled front remains draped across the southern half of the peninsula with a weak area of low pressure trying to develop along the SE FL coast this morning.
716 AM EDT Sun Sep 20 2020 Aviation - Rather cold early this morning - Becoming milder this week - Rather cold early this morning High pressure is producing excellent radiational cooling conditions early this morning with clear skies and calm winds. - Becoming milder this week Temps will undergo a gradual moderating trend through the early to middle portion of the upcoming week as southeast to southerly return flow develops on the back side of the departing ridge.