Aikyam-Lab/Synoptic-Bench huggingface dataset:
A stationary front draped across the Southeast US this morning will continue to weaken and wash out today, leaving high pressure to dominate the weather pattern. High temperatures today are forecast in the mid to upper 80s under sunny skies, although the apparent temperature will actually be a touch cooler due to the drier conditions with RH in the 40% range. Low temperatures overnight are forecast in the low to mid 60s.
1224 AM CDT Sun Sep 26 2021 (This evening through Sunday) Tranquil weather will persist the next 24 hours as weak ridging aloft prevails. Lows tonight will be in the 50s, with highs tomorrow mainly in the upper 80s, with a few readings in the lower 90s across the northern Big Country.
/Issued 604 PM CDT Sat Sep 25 2021/ /00Z TAFs/ Weak high pressure over South Texas will continue through Sunday, resulting in weak low level easterly flow and mostly clear skies. A weak mid to upper level ridge will remain over south Texas tonight into Sunday, then slowly shift eastward into the Gulf waters Sunday night.
310 AM EDT Sun Sep 26 2021 High pressure builds in in the wake of a weak frontal passage this morning.
High pressure is building in from the northwest and expect most lingering low clouds across the area to dissipate in the next few hours. CD Chattanooga Airport, TN 55 78 55 82 58 / 0 0 0 0 0 Knoxville McGhee Tyson Airport, TN 53 76 52 80 59 / 10 0 0 0 0 Oak Ridge, TN 51 76 51 79 58 / 10 0 0 0 0 Tri Cities Airport, TN 49 73 48 79 55 / 10 0 0 0 0.
1248 AM EDT Sun Sep 26 2021 Dry fall weather will continue across the Carolinas as high pressure dominates.
426 AM EDT Sun Sep 26 2021 High pressure building into the region today will offer dry weather and near seasonable temperatures.
This will be due to low pressure approaching from the Gulf of Alaska, tightening the gradient for the region. A ridge is moving off to the east tonight as a system out of the Gulf of Alaska is approaching the west coast. With the ridge off to the east and increased cloudiness, temperatures will be about 5 degrees cooler tomorrow with highs in the mid 70s to mid 80s.
Our dew points are a good 5-10 degrees cooler than current air temps for most sites, and that is the range we are headed down to by daybreak on air temps.
1153 PM EDT Sat Sep 25 2021 Mid and high clouds increase coverage during the late night well in advance of low pressure in central Canada and a warm front extending into the upper Midwest. Westerly surface wind is powered by the gradient between Ohio valley high pressure and low pressure settling from Canada into the northern Plains. Short lived cold advection today behind the cold front, as heights quickly rebound tonight with increasing low level southwest flow. Warm front will attempt to become active, as moisture return (PW values returning to around 1 inch) and waves of 300 K isentropic ascent work lower Michigan tomorrow.
254 AM CDT Sun Sep 26 2021 The broad area of high pressure that brought a rather nice start tot he weekend will move east of the Ozarks today. The southerly flow will also work to bring warmer temperatures and increasing low level moisture into the area.
A ridge is moving off to the east tonight as a system out of the Gulf of Alaska is approaching the west coast. With the ridge off to the east and increased cloudiness, temperatures will be about 5 degrees cooler tomorrow with highs in the mid 70s to mid 80s.
915 PM PDT Sat Sep 25 2021 Low pressure aloft will move slowly east across northern Baja tonight and Sunday.
The 00Z MPX soundings showed the large area of dry air with an RH of 20 to 25 percent in the lowest 4kft and mixing to 770mb. Early morning water vapor satellite imagery, heights, and lightning showed a trough moving into New England with a broad ridge over the Rockies with a closed low over Baja into the Southwest U. Lightning was most prevalent ahead of the trough in the Atlantic and also ahead of the closed low in the Southwest. At the surface, a warm front was located over central Minnesota. With the low dry levels, this may be virga.
FGEN response may be strong enough to try to generate a few showers across Mid-Michigan (more towards Reed City, Clare), but chances will be low with forecast soundings showing a lot of dry air in the low levels that will first need to be overcome.
Early morning water vapor satellite imagery depicts an upper level pattern consisting of longwave troughing over the eastern CONUS, and weak longwave ridging over the western CONUS with an embedded cut-off low over northern Baja, Mexico. At the surface, broad low pressure is spread out over the northern and central plains, and these upper level and surface features will move slowly eastward through the short term period. These strong winds will also contribute to fairly significant downslope warming, which will allow temperatures to increase dramatically compared to Saturday, and therefore the higher end of guidance is preferred with highs in the mid/upper 90s.
The low temperatures will be a bit more noticeably cool areawide, especially into the work week, with the drier air and more efficient radiational cooling allowing most locations away from the coast to likely dip into the upper 60s. Better rain chances begin to return later in the week for areas south of I-4 with some additional moisture working back in as an upper-level ridge settles back in and winds at the surface shift more easterly.
127 AM EDT Sun Sep 26 2021 A dry cold front will move across the region overnight.
1009 PM MDT Sat Sep 25 2021 The latest water vapor images and 500-mb analysis showed broad high pressure over much of the western CONUS with some high clouds moving mainly north of the CWA. At the surface, a lee trough was noted with some return southwest flow and 850-700mb warm advection.
The cold front has finally made its passage, with a lone ribbon of cu still associated with its departure out of our far southeast counties at the moment of this writing. The reinforcing slightly cooler and drier air, with dew points in the 40s, will soon complete its infiltration as well.
221 AM CDT Sun Sep 26 2021 Summary: High pressure will keep temperatures above normal and the rain away.
High pressure will remain in control. A weak cold front is working through Arkansas this evening. High pressure will build in behind it and VFR conditions will continue. Today Through Sunday Looking for uneventful weather, warming temperatures, and gradually increasing humidity? This forecast is for you! Cold front draped over us today washes out by evening with temps warming through the period (readings will be a few to several degrees above average for highs and lows).
1154 PM CDT Sat Sep 25 2021 High pressure and a very dry airmass will remain over the region tonight. The transition from cooler to above normal temperatures will begin on Sunday as southerly winds increase in response to a deepening area of low pressure over the central Plains.
High pressure starts today in the TN Valley, and will move slowly eastward to the Carolinas. A cold front extending from james Bay to southern Manitoba is advancing southward. Looking at upstream trends, and where the hi-res models are placing fgen banded precip today, supports the highest pops from the CVX area down toward Tawas.
Upper level trough over the area will continue to move farther offshore today. At the surface, high pressure across the Southeast will establish itself across the Carolinas during the day and into tonight. With high pressure building over the region, expect light and variable winds during the day with calm winds tonight. Guidance along with low level temperatures indicate that afternoon highs will be a couple degrees warmer than Saturday. Upper high to build to our west, ridging from the Gulf of Mexico up to Hudson Bay, while upper trough begins to deepen over the east coast.
/DC/ Expect another cool and dry night as high pressure remains in control across the region. /27/ Prior discussion below: High pressure at the surface and aloft is the primary influence on the region's weather. The trough has dragged a weak cold front (little more than a dew point gradient) into far northern MS, where it should wash out overnight. The boundary may serve as a focus for some fog development in drainages overnight, especially with high pressure allowing for good radiational cooling potential where winds can go calm. Low temperatures will likely fall into the lower to mid 50s across much of the area again. Then tomorrow as an upper-level ridge begins to take hold to our west, rising mid-level heights and continued sunny skies will allow for temperatures to warm back into the mid and upper 80s for most locations.
Clouds have decreased behind the cold front tonight with valley and river fog forming and becoming dense. Another mostly clear night tonight with continued threat for fog forming close to the warmer water of the rivers and lakes. Discussion: A weak cold front has passed to the other side of the Appalachians overnight with some left over low clouds still over part of the area and where skies have cleared some fog has formed and has become locally dense. High pressure will rebuild behind the front and another mostly sunny day with temperatures close to Saturdays is expected today.
Temperatures vary from the lower 50s to lower 60s. High pressure and upper level ridging builds in for the rest of the day, bringing southerly winds to the region through the afternoon and evening. This aids in temperatures warming 10 or so degrees above average into the lower 80s to near 90. Clouds look to be few and far between today given dry atmospheric profiles, so plentiful sunshine also aids in warmer than average temperatures. Humidity values remain above critical with regards to fire concerns, with the breezier (relatively speaking) winds where RH values will be the highest this afternoon.
147 AM EDT Sun Sep 26 2021 High pressure will build into the region tonight and Sunday.
/Today through Monday/ The moderating temperature trend will continue through the short term portion of the forecast as high pressure at the surface has shifted east of our region.
816 AM CDT Sun Sep 26 2021 Summary: High pressure will keep temperatures above normal and the rain away.
947 AM EDT Sun Sep 26 2021 Minor adjustments to dew points and temperatures to follow the diurnal upward trends, but no changes to the high temperature forecast today. A stationary front draped across the Southeast US this morning will continue to weaken and wash out today, leaving high pressure to dominate the weather pattern. High temperatures today are forecast in the mid to upper 80s under sunny skies, although the apparent temperature will actually be a touch cooler due to the drier conditions with RH in the 40% range. Low temperatures overnight are forecast in the low to mid 60s.
Conditions will be cooler across the south due to increased clouds and showers, with these mid and high clouds spreading northward through the day. This cut off low will track across New Mexico on Monday with moisture wrapping around the north side of the low from east to west across southern Colorado into southeast Utah. Those cooler overnight lows will take a turn upwards though due to the increased cloud cover, limiting efficient radiational cooling.
1010 AM EDT Sun Sep 26 2021 High pressure building into the region today will offer dry weather and near seasonable temperatures. Southerly flow will develop on Monday as the high slides off to the east, resulting in warmer temperatures.
654 AM EDT Sun Sep 26 2021 High pressure builds in in the wake of a weak frontal passage this morning.
Early this morning, water vapor & 00Z synoptic analysis indicate trough axis over E Canada & down through the Great Lakes, Mid-Atlantic & Appalachians. Cold core cutoff low is situated over the Baja Peninsula & mid-level ridge over TX. Some high cirrus may spread around E of ridge axis, but will be sct. Low-level thermo continue to warm, so highs will be a touch warmer than Sat around to above climo, with temps in mid-upper 80s. Tonight: As a cutoff low swings into the Desert SW & Intermountain W, sfc/mid-level ridge axis build E.
Southerly low level flow returns across the state by Sunday afternoon, returning warmer air and moisture. High temperatures Sunday and Monday will be in the mid 80s to lower 90s (5-10 degrees warmer than normal).
540 AM EDT Sun Sep 26 2021 An upper level trough will be present across the northeast U.
Meanwhile, a large upper level ridge over the central CONUS will begin to amplify and slowly slide eastward.
1031 AM EDT Sun Sep 26 2021 A long wave trough pivoting through Florida is noted on water vapor imagery. Northeast breezes are freshening across the Florida Keys in response to building high pressure over the southeastern United States.
947 AM EDT Sun Sep 26 2021 An upper level trough will be present across the northeast U.
Early this morning an upper low was located over Baja while a northwest flow was noted across the Plains with a rough in the east and another trough approaching the BC coast. Early this morning an upper low was located over Baja while a northwest flow was noted across the Plains with a rough in the east and another trough approaching the BC coast. Deep mixing on forecast soundings will result in minimum RH around 20 percent for the western 2/3rds of the cwa this afternoon with values around 25 percent across the east as temperatures warm into the low to mid 90s.
An upper level low moves out of the southern Rockies and opens up into a wave that moves to the northeast pushing the ridge further to the east during the mid week.
With the lower winds still prevailing this morning, the larger islands have been able to radiate into the upper 70s while the rest of the island chain is closer to near 80 degrees. High pressure has started building into the region, and winds will increase today in response.
651 AM EDT Sun Sep 26 2021 High pressure building into the region today will offer dry weather and near seasonable temperatures. Southerly flow will develop on Monday as the high slides off to the east, resulting in warmer temperatures.
The upper ridge amplifies through the day on Monday, but with limited mixing much of that potential will be lost.
730 AM EDT Sun Sep 26 2021 An upper level trough will be present across the northeast U.
946 AM EDT Sun Sep 26 2021 High pressure builds in in the wake of a weak frontal passage this morning.
Upper level trough over the area will continue to move farther offshore today. At the surface, high pressure across the Southeast will establish itself across the Carolinas during the day and into tonight. With high pressure building over the region, expect light and variable winds during the day with calm winds tonight.
FGEN response may be strong enough to try to generate a few showers across Mid-Michigan (more towards Reed City, Clare), but chances will be low with forecast soundings showing a lot of dry air in the low levels that will first need to be overcome. The forecast is currently dry Monday into Monday night when a weak cold front is expected to drop through the area.
As mentioned yesterday, breezy to locally gusty winds also developing Monday with the trough and frontal system. Cooler daytime temperatures and chilly at night for the mid-week timeframe. Night-time temperatures inland as chilly as the lower 40s. Return ridging for later in the week with warming daytime temperatures.
626 AM CDT Sun Sep 26 2021 The broad area of high pressure that brought a rather nice start tot he weekend will move east of the Ozarks today. The southerly flow will also work to bring warmer temperatures and increasing low level moisture into the area.
409 AM MDT Sun Sep 26 2021 n upper level low will be over the swrn US with mainly dry WNW flow aloft. There could be some mid and high clouds over the higher terrain by aftn, however, no precip will occur. For tonight, the upper level low will begin moving northeast, This will lead to some increase in mid and high level cloud, over srn parts of the CWA, but no precip will occur. Monday and Monday night a large upper level ridge of high pressure will be over the Central Plains States with a cutoff upper low over Northern New Mexico. In addition, there may be just enough moisture available combined with daytime heating to produce a few afternoon and evening showers and storms across the high country mainly along and south of Interstate 70.
A broad upper level trof axis along the east coast will move offshore through Monday. Concurrently, an upper ridge will build north through the MS River valley in advance of closed low lifting from the desert southwest to the central Rockies.
/issued 324 AM CDT Sun Sep 26 2021/ Upper ridging will continue to dominate the region today and tonight. Upper flow will begin to be more southwesterly and diffluent late tonight into tomorrow morning as the upper low currently over southwestern Arizona moves towards the Four Corners region. Showers are expected to develop ahead of the upper low but should stay just west of the Texas/New Mexico state line through sunrise tomorrow. Upper level low pressure rotating through northern New Mexico Monday will bring increasing subtropical jet energy across the Texas South Plains.
536 AM EDT Sun Sep 26 2021 Warm front to pass through Michigan this afternoon and evening as mid and upper-level moisture filters in across the state. Spotty showers will be possible this afternoon and evening across KMBS with the push of warmer air, but will preclude the mention in the TAF package as overall development chances remain low. A low amplitude mid level wave and high pressure expanding across the northern Great Lakes will drive a cold front from north to south across the forecast area late Monday.
748 AM EDT Sun Sep 26 2021 High pressure centered near the Tennessee Valley this morning slips across the central Applicahain Chain by this evening. This high provides light to gentle northeast or east breezes. High pressure moving by north of the waters will result in prevailing northeast or east winds for much of the week.
1034 AM EDT Sun Sep 26 2021 A weak cold front will settle southeast of the area today, with high pressure returning from the northwest.
High pressure today will gradually shift eastward as a weak trough approaches over the waters.
1031 AM EDT Sun Sep 26 2021 Corrected wording in climate section A long wave trough pivoting through Florida is noted on water vapor imagery. Northeast breezes are freshening across the Florida Keys in response to building high pressure over the southeastern United States.
The cold front that moved SE across portions of E Conus yesterday has stalled just to the N of us across the far N part of AL.
Increased moisture as well as anticipated cloud cover will keep temperatures on the mild side tonight, with most locations only dropping into the lower to middle 60s, rather than the 50s we've seen the last several nights. Storm chances will also continue Monday across most of the region as the low meanders across New Mexico, though given shear will remain limited, severe potential remains low.
510 AM MDT Sun Sep 26 2021 An upper level ridge over the Rockies has brought warm and dry conditions this weekend to our CWA. Temperatures will be above average for this time of year, with most places in our region seeing temperatures 10 degrees warmer than normal.
Looking upstream into north FL/southern GA and just off their coasts, there is even lower PWAT air, and low-level north/northeast flow from high pressure across the southeastern U.
Temperatures will be around 10 degrees warmer than yesterday in association with the south/southwest winds as 850mb temperatures warm to around 15-16 C. On Monday, expect a weak cold front to slowly drop into northern IL with continuing southwest winds and very warm temperatures ahead of the front.
634 AM CDT Sun Sep 26 2021 Summary: High pressure will keep temperatures above normal and the rain away.
314 AM MDT Sun Sep 26 2021 Upper level flow is from the west, following the weak and building ridge of high pressure.
605 AM CDT Sun Sep 26 2021 (Today and tonight) Warm and dry again today, with upper ridging over the region. There will be an increase in low level moisture late tonight as southeast to south winds of 5 to 15 mph begin to advect dew points in the low to mid 50s into the region.
The upper level pattern features a trough to the east that extends from the eastern Great Lakes southward into the Carolinas with a low amplitude ridge extending across the western 2/3rds of the CONUS. This front will bring in a reinforcing shot of cooler and drier air to the area. Expect temperatures will start out in the low to mid 50s today. The low-level high will shift to the east during this timeframe with weak southerly flow returning to the area. This will lead to increasing moisture in the low-levels.
155 PM MDT Sun Sep 26 2021 Ridge of high pressure continues over the area to start the week with temperatures staying 10 to 20 degrees above normal.
338 PM EDT Sun Sep 26 2021 High pressure moves off to the south tonight.
(This evening through Monday) An upper level low, currently over Arizona, will gradually track east into New Mexico by tomorrow afternoon.
An upper ridge will continue to build northward over the Southern Plains as it slowly shifts eastward, while a upper cutoff low centered over the Arizona/ Mexico border slowly lifts northeastward. This afternoon's high temperatures are on track to top out in the low to mid 80s.
Dry westerly flow continues through Monday as a trough deepens and approaches the West Coast. Temperatures should remain 5-10 degrees above normal today, and drop back a few degrees on Monday as the trough starts to approach. Winds will start to pick up aloft ahead of the incoming trough, so afternoon surface winds, especially for higher elevations, will pick up this afternoon.
Temperatures are in the lower to mid 80s north to mid 80s south. In the afternoon, a back door cold front / lake boundary should move southwest, which will decrease the south winds over much of the area.
The upper closed low sits over southern Arizona with some mid- level moisture bringing higher clouds into and across the southern Panhandles today. Tomorrow the upper low will push farther east into New Mexico with a stream of better mid-level moisture across West Texas. There is slight chance for a few showers and thunderstorms to pop up across the western and central Panhandles tomorrow afternoon and evening with some weak dynamic forcing and moisture from the upper low.
300 PM EDT Sun Sep 26 2021 High pressure will continue over the region into early this week. A dry cold front will cross the middle of the week. Perfect day acrs ENC with dry/seasonably cool high pres continuing to ridge into the region. Strong ridge of high pressure lingers into the first half of the work week to bring a stretch of relatively quiet weather.
Stable conditions, dry weather, and clearing skies will continue through the rest of today and tonight as the persistent dry air mass associated with high pressure continues to affect the southeastern US. Overnight low temperatures are expected to drop into the lower 60s and upper 50s for inland areas and in the mid to upper 60s along the shoreline and for areas adjacent to the St Johns River.
319 PM EDT Sun Sep 26 2021 Cooler, more seasonal conditions are expected through the middle of the week. Variably cloudy conditions and the chance for scattered showers continue mid-week as a upper level low drifts over the area. Tomorrow, zonal flow around the upper level low over Quebec will continue, with another short wave approaching in the afternoon. This will initially allow 500 mb closed low to develop to our N early in the week and then meander slowly S over the area mid-late week. There will also be a few rounds of clouds and maybe showers as waves of energy rotate around that closed low.
129 PM EDT Sun Sep 26 2021 Dry weather continues through Monday under high pressure, with a warmup tomorrow.