Aikyam-Lab/Synoptic-Bench huggingface dataset:
250 PM EST Thu Mar 4 2021 A dry cold front will push through our region this afternoon and evening. Chilly high pressure will follow and extend across the central Appalachians and southern middle Atlantic through the weekend. Breezy northwesterly wind gusts of 15-25 mph will continue this afternoon ahead of a dry cold front, currently moving south along the NC/VA border. Cold air advection will keep highs around 5 to 10 degrees below seasonal normals, with temperatures ranging from the low to mid 50s. Temperatures will be slightly lower Friday night, with lows ranging from the mid 20s north to the low 30s south.
953 AM MST Thu Mar 4 2021 Mean central NOAM ridging will prevail through the end of the week, supporting mild temps and dry weather over the region. Upper low will push through the central Rockies and onto the central/southern Plains today. Lee-side trough will remain over the region with general light flow through tomorrow. Easterly upslope flow will continue to limit temps some east of the trough on the SD plains. Aforementioned central CONUS trough will advect ll moisture into the central Dakotas, and into portions of western SD tonight. The warmest temps will be on Sat when a warm front will lift slowly NE across the area, at least through the SW half.
A mid level trough extending over the Atlantic waters is keeping an area of showers persisting east of Brevard, which will slowly meander southward through the day, but keep over the open waters. 75" in the lowest levels. A pleasant afternoon is expected, with near normal highs in the low to mid 70s. Much cooler lows arrive tonight, dropping to the upper 40s across the north, low 50s inland and upper 50s at the coast. Dry air and calmer seas are expected overnight as high pressure begins to build over the area.
100 PM PST Thu Mar 4 2021 High pressure will bring warming and drying through Friday.
High temperatures today will range from the low to mid 60's across many locations across the valley with upper 60's in the southern valley. High temperatures in the low to mid 50's is expected across the high terrain. Chattanooga Airport, TN 69 38 59 37 58 / 0 0 0 10 0 Knoxville McGhee Tyson Airport, TN 66 33 53 32 53 / 0 0 0 10 0 Oak Ridge, TN 67 33 55 31 54 / 0 0 0 10 0 Tri Cities Airport, TN 60 27 51 24 50 / 0 0 0 0 0.
A low pressure system will continue to cross southern and central Utah through midday today. High pressure returns Friday before another weak storm system arrives for the weekend. A closed low translating east across the area will continue to rapidly shift downstream over the next several hours allowing a net drying/clearing trend from west to east this afternoon. Have noted a region of enhanced upglide focused along the western periphery of this low over the last several hours, with moderate snowfall the result along the higher passes on the I-15 corridor between Cove Fort and Beaver. Warming cloud tops along the northern and western peripheries of the low noted in IR satellite another indicator of loss of lift.
200 PM CST Thu Mar 4 2021 (Issued 200 PM CST Thu Mar 4 2021) Tonight through Friday night: A ridge of high pressure will remain nearly stationary across the area this period. A slight modification of the low level thermal trough combined with more of a northwest wind regime on Friday should result in an uptick in temps. The ridge and quiet conditions will persist into Friday night as well.
High pressure will dominate our weather through Friday although an approaching upper level wave will lead to an increase in high cloudiness during the afternoon.
Cooler airmass settles into the region today ushered in by steady northwesterly upper level flow on the back side of a gradually amplifying trough across northeast NOAM. Northerly flow at the surface in the wake of yesterdays cold front is producing a fair coverage of low stratus that is oozing southward early this morning. Otherwise, expecting dry conditions to prevail for the remainder of the forecast area as surface ridging builds southward out of Ontario and into the Great Lakes bringing increasing stability and deep layer dry air. This should yield daytime highs in the low/mid 30s to 40 degrees for most of southeast Michigan. Areas along the shoreline of the Thumb will be a bit cooler with daytime high temperatures below freezing.
1032 AM EST Thu Mar 4 2021 Currently - A cool front moved through the Keys last night resulting in cooler and drier weather. Winds are gentle to moderate out of the northwest due to high pressure centered along the central Gulf Coast and the tail end of a trough over the Bahamas. Short Term Update - Fairly cool northwest breezes will back a bit due to day time heating as well as the lingering trough off to the east. Temperatures should climb into the lower 70s with dew points falling towards the mid 50s. High pressure along the central Gulf Coast and the tail of a trough over the Bahamas will result in moderate west to northwest breezes across Keys waters this afternoon.
However, clouds will be on the increase early Fri as a low pressure system is deflected to our southwest. Highs on Fri and Sat across the region should be noticeably cooler than today, especially in the southwestern half of the region where the new, cooler/drier airmass has not quite yet made it into the area with significant depth.
Low pressure has exited the region leaving clear skies and sunny conditions.
158 PM MST Thu Mar 4 2021 20z surface analysis had lee trough from central MT into eastern WY. East/southeast flow over the CWA as thin cirrus pushes through in response to upper low spinning over eastern CO. Tonight, upper low spins east well south of the CWA.
Ridge of high pressure will extend southeast then south across the region Tonight through Friday. Subsidence under this ridging will provide mainly clear skies. Anticipating some high cloudiness moving into western counties late in the day, ahead of an approaching low pressure system. The position of the ridge will provide for a northwest to north flow Tonight, with temperatures falling to a little below seasonal levels. This will keep northern and eastern counties significantly cooler than more inland NE FL Friday. For example, beaches will max in the lower to mid 60s, Jacksonville upper 60s, while Gainesville gets into the mid 70s. For now, starting with a mention of patchy fog for the highway corridor, and will continue to monitor.
High temperatures today will range from the low to mid 60's across many locations across the valley with upper 60's in the southern valley. High temperatures in the low to mid 50's is expected across the high terrain. Diegan Chattanooga Airport, TN 37 59 37 58 32 / 0 0 10 0 0 Knoxville McGhee Tyson Airport, TN 31 53 32 53 28 / 0 0 10 0 0 Oak Ridge, TN 31 55 31 54 28 / 0 0 10 0 0 Tri Cities Airport, TN 26 51 24 50 24 / 0 0 0 0 0.
A weak cold front moving through the area is already bringing drier air in from the northeast, with cooler days and nights anticipated over the weekend. This is a good time to remind everyone that Middle Tennessee can see freezing temperatures well into April, so don't get excited by the warm temperatures today and start planting that garden just yet. and upper ridging prevails into the Tennessee Valley.
High temperatures should be even warmer than we saw yesterday and reach around 60 on the Plateau and mid 60s to around 70 elsewhere. High pressure will continue to dominate the weather across Middle Tennessee for the foreseeable future.
High temperatures should be even warmer than we saw yesterday and reach around 60 on the Plateau and mid 60s to around 70 elsewhere.
Today: As an upper level ridge drifts through the region today, expect light southeasterly winds and clear blue skies. As we head toward the overnight, expect to see some increasing cloud cover as an upper level low swings off the Rockies and dives through southern Kansas and Missouri. However, it will feel notably colder after the passage of a cold front Friday along with lingering cloudiness, especially in southern parts of the area.
The presence of stable high pressure is clearly evident on visible satellite imagery by the expansive lack of clouds across the Deep South. At this hour, some areas have already reached or exceeded yesterday's high, so continued to trend a bit on the warm side of guidance with highs in the lower 70s expected, and I also slightly lowered dewpoints based on the latest trends. The increased cloud cover should keep our overnight lows several degrees warmer than last night. During the day tomorrow, we remain under the influence of high pressure with any forcing still to our west, so we stay dry with highs in the 60s north to lower 70s south beneath a layer of mid-level clouds. Otherwise, went with the cooler guidance especially on lows over the weekend with a backdoor cold front and low dew points.
Unseasonably warm conditions again this afternoon across central and southeast MO with cooler highs across west central and southwest IL. An upper level low over CO this afternoon will move into OK late tonight and into AR Friday afternoon as it opens up and weakens. There will be more cloud cover along with lower upper level heights which will result in cooler high temperatures on Friday, albeit still slightly above normal.
The cold frontal passage will allow for more of a temperature gradient today; with highs in the lower 50s seen north of I-64 and some lower 60s occurring near the Tennessee border. A back door cold front will push across the area this morning with cold advection expected through the day today. Despite the lack of cloud cover and precipitation, the cold air advection will keep temperatures a bit cooler today. With high pressure nosing into the area tonight and winds dying off, we should see a cold night with temperatures down into the 20s in most places. The cooler weather will stick around on Friday with highs only in the 40s. It will start with a large upper level trough over the eastern CONUS, and an upstream ridge just to the west of it.
Another fantastic afternoon in progress with high pressure across the region.
Cooler temperatures today will warm into the weekend.
(This evening through Friday) An upper level low will track across Oklahoma overnight, sending a cold front through the area Friday morning. Overnight lows ahead of the front will be in the low to mid 40s. Cooler temperatures are forecast on Friday, with highs in the 60s to lower 70s. (Friday night through next Thursday) Due to the cold frontal passage mentioned in the short term forecast discussion, cool and dry conditions will continue into this weekend. A cold front will move through the area Friday morning, resulting in northwest winds of 15 to 20 knots, with higher gusts.
1123 AM CST Thu Mar 4 2021 An upper level low currently located across southern UT per WV imagery, will track into CO today then turn southeastward toward OK Friday. A deep trough across eastern Canada and New England is causing the southeastward turn, and this track will keep most of the precipitation south of western and north central Nebraska. At the surface expect low pressure to deepen across eastern CO and this turns the low-level flow southeasterly. A subtle wave diving southeast across MN and IA will drive a weak back door cold front into eastern portions of north central NE, and have lowered highs a couple of degrees across that area.
At the same time drier and colder air is shown in low levels advecting southeast on the southern edge of an area of high pressure dropping southeast across the Great lakes region overnight. At the same time, an area of low pressure moves southeast into eastern Texas tonight. Advection of this air into northwestern Alabama overnight should keep temperatures warmer in that area, likely in the upper 30s to lower 40s, despite clear skies. This should create quite a gradient in temperatures, with lows east of the I-65 corridor dropping into the lower to mid 30s. It will be noticeably cooler on Friday, with highs only climbing into the lower 50s to around 60 degrees (Based on some guidance, this may be a bit optimistic).
1208 PM CST Thu Mar 4 2021 An upper low will move eastward across the central Rockies today before turning southeast over the central/southern Plains tonight. Upper ridging ahead of the low early today will provide clear and mild conditions again, though the initial lift and moisture flux ahead of the upper low will result in increasing clouds and a slight chance for showers across central Kansas by the late afternoon. Rain chances will ramp up markedly later this evening as forcing for ascent increases ahead of the approaching upper low. An area of mid-level convergence and frontogenesis east of the low center still looks to affect portions of central and southern Kansas overnight, which should focus more persistent widespread rain/rain showers. Rain chances will diminish/end during Friday as the upper low/trof moves into the Lower Mississippi Valley.
Temperatures will be warm, with highs today topping out in the lower 70's for many locations.
520 PM CST Thu Mar 4 2021 Another quiet, sunny, seasonably warm day across the region today as high pressure remained in control. For Friday, some slightly cooler air aloft will be creeping in, but even so, we'll remain seasonably warm with highs in the 40s to perhaps lower 50s again.
637 PM EST Thu Mar 4 2021 High pressure fills in Friday behind a dry cold front bringing below average temperatures into the weekend.
411 PM MST Thu Mar 4 2021 A few rain and/or snow showers will remain possible along the I-80 corridor through this evening as a well-organized upper low drifts eastward across the central Rockies. High-amplitude upper-level ridging develops along the Rockies on Friday w/ 700 mb temperatures climb to +2 to +4 C. High pressure ridging builds into the region as weaken Central Plains low advects eastward.
/Tonight through Friday Night/ A broad, closed upper trough will slowly move east across Oklahoma during the day Friday, eventually becoming an open, positively- tilted trough over the ArkLaTex by early Friday evening. As ascent from the upper trough spreads over the area, convection should develop over Southeast Oklahoma just before sunrise and will gradually spread south and east through the daytime hours. The axis of the trough will move across the area Friday evening moving the showers and thunderstorms out of the region by midnight.
251 PM MST Thu Mar 4 2021 A few rain and/or snow showers will remain possible along the I-80 corridor through this evening as a well-organized upper low drifts eastward across the central Rockies. High-amplitude upper-level ridging develops along the Rockies on Friday w/ 700 mb temperatures climb to +2 to +4 C. High pressure ridging builds into the region as weaken Central Plains low advects eastward.
511 PM CST Thu Mar 4 2021 VFR conditions will prevail across the terminals through the overnight hours as cloud coverage increases from the west ahead of a low pressure system. /Tonight through Friday Night/ A broad, closed upper trough will slowly move east across Oklahoma during the day Friday, eventually becoming an open, positively- tilted trough over the ArkLaTex by early Friday evening. As ascent from the upper trough spreads over the area, convection should develop over Southeast Oklahoma just before sunrise and will gradually spread south and east through the daytime hours. The axis of the trough will move across the area Friday evening moving the showers and thunderstorms out of the region by midnight.
Temperatures are forecast to be above 5 degrees cooler than Thursday due to a broad Canadian air mass over the western Great Lakes edging slightly closer to Siouxland. Over the weekend, the ridge aloft amplifies while the surface flow becomes more southerly.
957 PM EST Thu Mar 4 2021 A dry cold front will move south through our region early tonight. Chilly high pressure will follow and extend across the central Appalachians and southern middle Atlantic through the weekend. Cold air advection will keep highs around 5 to 10 degrees below seasonal normals, with temperatures ranging from the low to mid 50s. Temperatures will be slightly lower Friday night, with lows ranging from the mid 20s north to the low 30s south.
VFR is expected to prevail tonight amid generally light SE flow, with increasing high/mid level clouds after midnight into FRI morning ahead of an approaching upper trof. /issued 330 PM CST Thu Mar 4 2021/ Mid-afternoon sfc analysis shows high pressure centered over the ArkLaMiss and sern LA ridging wwd, with low-level winds now gradually shifting to a more onshore direction. Water vapor imagery shows a weak ridge building ahead of our next weather maker moving out of the Rockies at this time.
703 PM EST Thu Mar 4 2021 Upper trough now in the W Atlantic as water vapor imagery showing NW flow aloft and very dry air over the E Gulf and FL Peninsula. Weak high pressure at the surface over the region with light winds, low dew points and clear skies for radiational cooling tonight with temps at or slightly below seasonal normals.
706 PM EST Thu Mar 4 2021 A dry cold front will move south through our region early tonight. Chilly high pressure will follow and extend across the central Appalachians and southern middle Atlantic through the weekend. Breezy northwesterly wind gusts of 15-25 mph will continue this afternoon ahead of a dry cold front, currently moving south along the NC/VA border. Cold air advection will keep highs around 5 to 10 degrees below seasonal normals, with temperatures ranging from the low to mid 50s. Temperatures will be slightly lower Friday night, with lows ranging from the mid 20s north to the low 30s south.
We are seeing quiet conditions this afternoon as we sit under a short wave ridge. This ridge will push to the east tomorrow and amplify over the northern Rockies as a trough digs out of the Gulf of Alaska and approaches the west coast. The bigger impact will be the precip that the trough brings.
For tonight, conditions will continue to be predominately influenced by surface ridging enhanced by the long wave trough to the east. Cloud cover and increasing rain chances by late morning will resist significant warming, and Friday looks a bit cooler than today with highs mostly in the middle 60s to lower 70s in the south. Rain chances will increase through the day as the wave of low pressure approaches. This wave will weaken and move more southerly under the influence of deep layer confluent northwest flow on the upstream side of the east coast trough, which will limit the impacts locally. The highest totals will likely be in the southwest where some of the deeper convective elements may reside.
522 PM CST Thu Mar 4 2021 (This evening through Friday) An upper level low will track across Oklahoma overnight, sending a cold front through the area Friday morning. Overnight lows ahead of the front will be in the low to mid 40s. Cooler temperatures are forecast on Friday, with highs in the 60s to lower 70s. (Friday night through next Thursday) Due to the cold frontal passage mentioned in the short term forecast discussion, cool and dry conditions will continue into this weekend. In general, VFR conditions will prevail but low clouds may make a run north towards KJCT shortly after sunrise, and low/mid clouds may increase at KABI Friday afternoon behind a cold front.
High pressure will build into the region for Friday before another weak storm system arrives for the weekend.
426 PM MST Thu Mar 4 2021 20z surface analysis had lee trough from central MT into eastern WY. East/southeast flow over the CWA as thin cirrus pushes through in response to upper low spinning over eastern CO. Tonight, upper low spins east well south of the CWA.
628 PM EST Thu Mar 4 2021 High pressure will provide VFR conditions throughout the forecast with just some cirrus possible on Friday. Mid level northwest flow will continue to govern conditions across southeast Michigan over the next 72 hours, as the western expanse of height falls associated with a closed low over New Foundland remain fixated over the region. A healthy radiational cooling environment will emerge tonight as lingering low stratus fades with the loss of daytime heating, offering an extended window of clear sky atop a diminishing gradient within encroaching surface ridging. Standard diurnal moderation of this colder resident thermal profile Friday given the high degree of insolation and no real advective process.
As for the rest, a dynamic upper low will move from southern CO this afternoon to western Oklahoma by tmrw morning. A final cold front will sweep through Fri morning.
Cooler air has settled into the region today with highs dropping back to slightly below normal readings. Increasing high pressure into Friday will however bring a quick return to above normal temperatures and highs in the lower 80s, lasting through the weekend.
/issued 220 PM CST Thu Mar 4 2021/ An upper level low moving across southern Colorado is bringing very windy conditions to southeastern New Mexico and West Texas this afternoon. Westerly winds have brought highs into the 80s across much of the area, but tomorrow will be cooler as a Canadian airmass drops south behind the departing low bringing temperatures back below normal.
The low cloud deck should gradually lift tomorrow and VFR conditions will be possible by mid to late afternoon. As for the rest, a dynamic upper low will move from southern CO this afternoon to western Oklahoma by tmrw morning. A final cold front will sweep through Fri morning.
Temperature model guidance today has been underwhelming, but we are beginning to see temperatures sneak into the lower 70's in spots just north of the NE/KS border.
A prefrontal trough will allow for winds to shift before the front arrives tomorrow morning.
It has been another pleasant day weather-wise with temperatures reaching the low 70s for a second day in a row. Otherwise, warmer than average temperatures remain the rule this forecast package. As of this afternoon, a mid-level closed low was spinning over Colorado. The rain may clip the extreme southern and southwestern CWA tonight, but chances remain on the low side due to weak lift and lack of deep layer moisture -- RAP and HRRR profiles both show a layer of dry air from the surface up through about 700 mb. Long range models are in better agreement today with the timing and placement of a cold front that could impact the forecast area midweek.
High pressure aloft will result in well above normal high temperatures Friday into the weekend.
310 PM CST Thu Mar 4 2021 It has been another pleasant day weather-wise with temperatures reaching the low 70s for a second day in a row. Otherwise, warmer than average temperatures remain the rule this forecast package. As of this afternoon, a mid-level closed low was spinning over Colorado. The rain may clip the extreme southern and southwestern CWA tonight, but chances remain on the low side due to weak lift and lack of deep layer moisture -- RAP and HRRR profiles both show a layer of dry air from the surface up through about 700 mb. Long range models are in better agreement today with the timing and placement of a cold front that could impact the forecast area midweek.
Still expect a colder night with light winds as high pressure remains in place across the region. Anderson (Issued 200 PM CST Thu Mar 4 2021) Tonight through Friday night: A ridge of high pressure will remain nearly stationary across the area this period. A slight modification of the low level thermal trough combined with more of a northwest wind regime on Friday should result in an uptick in temps. The ridge and quiet conditions will persist into Friday night as well.
Amplified upper troughing is progged to persist across Eastern North America through the weekend.
330 PM CST Thu Mar 4 2021 Mid-afternoon sfc analysis shows high pressure centered over the ArkLaMiss and sern LA ridging wwd, with low-level winds now gradually shifting to a more onshore direction. Water vapor imagery shows a weak ridge building ahead of our next weather maker moving out of the Rockies at this time.