Aikyam-Lab/Synoptic-Bench huggingface dataset:
439 PM MST Thu Mar 4 2021 The upper low is currently seen spinning over southeast Colorado with scattered convective showers across southwest Colorado and moisture wrapping around from the east across much of west-central and northwest Colorado. High pressure will amplify across the Great Basin and begin to shift eastward over the western slope. Yes, this means a return to 60 degree temperatures for the lower valleys of west- central Colorado and east-central to southeast Utah. Let the warming trend commence as the ridge of high pressure translates eastward allowing winds to become more southerly ushering in warmer temperatures.
Rain chances are still on tap for tomorrow with the passage of the next cold front. Colder air should arrive by the evening hours as the upper low moves down enough to the SE.
As expected however, most of the precipitation is staying to the south and east of the region as the low quickly moves across Utah and Colorado later this afternoon. With ridging remaining the dominant pattern behind today's system, Friday's temperatures will remain much above normal across the region.
(Previous Discussion) Tomorrow will be rated a "10/10" for March days, with high pressure building over the area keeping air dry and temperatures pleasant. Rain chances near zero as the mid level trough exits east into the Atlantic, with clear skies, although a few diurnal cumulus will be possible. High pressure builds across Florida tomorrow causing winds to decrease further and become onshore in the afternoon.
636 PM EST Thu Mar 4 2021 A dry cold front will push south across the area early tonight. High pressure builds back in tonight through the weekend, while a developing offshore low is expected to move well south and east of the region over the weekend. A backdoor cold front is currently moving through Eastern NC early this evening, and will push through the area fully over the next couple hours. After a mild day, temps will slowly fall early tonight, and then fall sharply overnight behind this cold front with decent CAA developing. Lows will reach the low to mid 30s across most of the area, with upper 30s to around 40 likely on the beaches and OBX. High pressure will continue to build into the region allowing for cool, dry and sunny weather.
207 PM MST Thu Mar 4 2021 The upper low is currently seen spinning over southeast Colorado with scattered convective showers across southwest Colorado and moisture wrapping around from the east across much of west-central and northwest Colorado. High pressure will amplify across the Great Basin and begin to shift eastward over the western slope. Yes, this means a return to 60 degree temperatures for the lower valleys of west- central Colorado and east-central to southeast Utah. Let the warming trend commence as the ridge of high pressure translates eastward allowing winds to become more southerly ushering in warmer temperatures.
Cold front arrives Friday morning with winds remaining up in the 20-30 mph range. /issued 226 PM CST Thu Mar 4 2021/ Progressive upper level low will provide a glancing blow as it passes from the Texas Panhandle southeast into the Red River Valley overnight. Low clouds will spread south out of the Texas Panhandle across our CWA with the passage of the primary cold front beginning in the early morning hours tomorrow, with no precipitaion expected. The upper low will continue to pull away from the region on Friday night with winds eventually decreasing through the evening.
Should see some SHRA development during the day tomorrow ahead of the next cold front and its associated northwest wind shift that will move into the area in the afternoon and off the coast in the evening.
Above normal temperatures and dry conditions under a ridge of high pressure is expected through Friday.
333 PM CST Thu Mar 4 2021 Cloud cover has begun to increase across Eastern Oklahoma this afternoon as a closed low dropped southeast into the Oklahoma Panhandle. The closed low is progged to continue its southeastward track into Western Oklahoma tonight and become more of an open wave Friday as it slides southeast through the region. drier air in the low levels look to limit overall QPF and thus less than an quarter of an inch of rainfall is forecast for most locations. marginal elevated instability combined with steepening mid level lapse rates will allow for isolated thunder to be possible on the north and east side of the upper low sliding through the region. After cooler conditions with the rain showers Friday.
752 PM MST Thu Mar 4 2021 High pressure will keep the forecast area mostly clear overnight, and winds will mostly remain light, so the main adjustment was to lower low temperatures somewhat over the plains.
Warmer air returns into early next as the high shifts to the east. A positively tilted H5 trough positioned over the eastern CONUS will feed in colder and drier air across the Ohio Valley to start the weekend.
/Issued 333 PM CST Thu Mar 4 2021/ Cloud cover has begun to increase across Eastern Oklahoma this afternoon as a closed low dropped southeast into the Oklahoma Panhandle. The closed low is progged to continue its southeastward track into Western Oklahoma tonight and become more of an open wave Friday as it slides southeast through the region. drier air in the low levels look to limit overall QPF and thus less than an quarter of an inch of rainfall is forecast for most locations. marginal elevated instability combined with steepening mid level lapse rates will allow for isolated thunder to be possible on the north and east side of the upper low sliding through the region. After cooler conditions with the rain showers Friday.
200 AM MST Fri Mar 5 2021 A transitory ridge of high pressure will slide overhead today in the wake of yesterday's system. The ridge axis will settle over western Colorado overnight before shifting east of the Continental Divide by daybreak Saturday.
At the surface, a high pressure system over the northern Great Lakes region will drop a backdoor cold front into northeast Arkansas tonight, and thru the rest of the state tomorrow. Max temps tomorrow will be about 15-20 degrees cooler across the northern half of the state due to the aforementioned front, clouds, and rain. Temps across the southern portions of the state will be about 10-15 degrees cooler than today. Sunshine will prevail in the wake of the upper system on Friday, and temps will start to rebound a bit, with readings from the upper 50's north to the lower 60's south.
The warming trend will continue on Friday as temps are expected to be a few degrees warmer than today. Highs in the lower valleys will be in the 60s, including the Upper Treasure and Western Magic Valley. The warmer temps are in response to southwest flow ahead of an approaching upper trough. Winds will increase as the trough approaches, becoming windy in some areas by the afternoon. Showers spreading across the area from the west on Saturday, with periods of MVFR conditions, areas of mountain obscuration, and gusty west to northwest winds Saturday afternoon and evening following a cold front.
933 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.
248 AM EST Fri Mar 5 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. A deep mid/upper level low/trough centered over far southeastern Canada will help to force a s/w disturbance moving across the Deep South and southeastern U. Otherwise, quite weather is expected to continue this weekend, though a reinforcing dry cold will likely move through the area as moisture starved s/w disturbances are expected to move through the deep mid/upper trough along the east coast.
204 AM EST Fri Mar 5 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. A deep mid/upper level low/trough centered over far southeastern Canada will help to force a s/w disturbance moving across the Deep South and southeastern U. Otherwise, quite weather is expected to continue this weekend, though a reinforcing dry cold will likely move through the area as moisture starved s/w disturbances are expected to move through the deep mid/upper trough along the east coast.
103 AM EST Fri Mar 5 2021 A dry cold front will push south across the area early tonight. High pressure builds back in tonight through the weekend, while a developing offshore low is expected to move well south and east of the region over the weekend.
224 AM CST Fri Mar 5 2021 In wake of an upper low another windy day is ahead for most all of the area. Initially winds will be nw, but transition to ne by mid afternoon and high temps will be 10 to 20 degrees cooler w-e, respectively, than previous 24hrs. Tue-Wed be the warmest days with an amplified low-level thermal ridge, especially across the wrn areas. Either Thur or Fri a Pacific front looks to move across the area favoring a bout of wind and cooler temps.
Cliff MORNING DISCUSSION: Upper ridging over the region will lead to mild and dry conditions through Saturday.
345 AM EST Fri Mar 5 2021 Weak high pressure over the region today will continue the fair dry weather with lighter northeast flow allowing for an afternoon sea breeze near the coast. Tonight through Saturday models remain in good agreement in the development and movement of an area of low pressure across the Gulf of Mexico and then out into the Atlantic Ocean Saturday night. Following this system high pressure over the eastern U.
Upper level ridge axis is positioned across the Rockies just east of our region, with low level ridging across the region. With that said, there is a weak upper level wave that will propagate over the ridge and through the region by Friday morning, possibilityleading to a band of mid-low clouds.
300 AM EST Fri Mar 5 2021 A dry cold front brings cooler air across the Carolinas Friday through the weekend, while low pressure passes southeast of the area with a few clouds possible through Saturday.
344 AM EST Fri Mar 5 2021 Under mostly clear to partly cloudy skies and mainly north winds of 10 to 15 mph, temperatures are in the lower to mid 60s along the Florida Keys. The western tail of a low level trough reaching into the Northwest Bahamas into extreme South Florida will sag to along the north coast of the archipelago of Cuba tonight, before slowly lifting northwestward into South Florida on Saturday.
256 AM EST Fri Mar 5 2021 The closed low over western Labrador will continue to wobble around eastern Canada through the first half of the weekend maintaining northwest mid-level flow locally. As a result, little to no temperature advection will occur with SE MI continuing to remain under the gradient between the colder eastern Canadian airmass and a warmer Great Plains ridge. Highs Saturday likely will be a couple degrees lower despite continued sunny skies as the upper trough digs further southeast allowing the Canadian airmass to expand westward.
345 AM EST Fri Mar 5 2021 The region will remain between strong low pressure over Eastern Canada and high pressure situated over southern Canada and the Upper Midwest through the start of the weekend.
High pressure will build into the region for Friday before another weak storm system arrives for the weekend. Mid level ridging is building across the Great Basin this evening, in the wake of a departing upper low which is currently spinning over the central High Plains. Subsidence associated with the ridge axis has allowed skies to clear across the forecast area. As this ridge builds east Friday max temperatures are expected to rebound into the low 60s across most western valleys including the Wasatch Front.
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 Weekend: After Friday, upper and mid level ridging will return for Saturday.
1027 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.
Today: A deep-layer cyclone observed over the southern plains early this morning will continue southeast today with the northern fringe of the associated cloud shield sinking to the south of our area by afternoon.
355 AM EST Fri Mar 5 2021 Following a dry cold front, clear skies and cool temperatures are expected Friday. Cloud cover will increase as a weak low pressure system tracks to the south of the area Saturday.
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. This is expected to be a light event with limited upper- level support, however, a reinforced shot of cooler air is expected to advect into our region after the system passes through the Florida Peninsula. Expect overnight lows to be around 50 degrees with daytime highs in the low 60s.
Great conditions expected through Friday as high pressure is back in charge. The main concern is snow in the higher Sierra of Inyo County and an increase in gusty winds across the Mojave and into central Nevada.
However, a low pressure system currently brewing over the southern plains will push southeastward and spread clouds across the mid state today and tonight. Given that the bulk of this system will remain to our south, we do not anticipate any precipitation as a result, and we do expect to clear out once again by Saturday as high pressure reasserts itself.
As this disturbance moves across our region, increasing cloudiness this morning with increasing chances of showers and a few thunderstorms is expected later this morning, with the highest chances this afternoon and evening for the area. Behind this system will be building high pressure, a return to slightly cooler temperatures, and no precipitation expected for the remainder of the weekend.
This trough is progged to translate slowly east and southeastward into the Middle Mississippi Valley area today. A mid/upper ridge is progged to build into the central CONUS on Saturday while breezy south to southwesterly low level flow develops from west to east. Temperatures will respond with highs rising into the low to mid 60s for most areas.
242 AM CST Fri Mar 5 2021 Cloudy and slightly cooler conditions are expected for much of today as an upper low drops southeast from the High Plains into Texas, which will also lower fire danger temporarily with lighter northeast winds and slightly higher humidity. Elevated fire danger will redevelop Saturday, however, as south southwesterly flow and warmer temperatures return.
1051 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.
Primary aviation concern over the next 24 hours is the likelihood of fuel alternate MVFR stratus at all sites tonight in the wake of the cold front that pushed south this evening. 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.
210 AM EST Fri Mar 5 2021 High pressure will stay centered to our west but expanded into our area through into this weekend. Despite plenty of sunshine, cooler temperatures as 8h temps drop a bit, but northwest winds may generate enough downslope warming to boost readings into the 50s across our southern piedmont of VA into NC counties, with 40s elsewhere, except some 30s in highest elevations. Tonight, high pressure remains situated from the Canadian Prairies to the TN Valley, ridging into our region, keeping us dry. A deep upper level trough in the northern stream will preside over the Northeast throughout the weekend. As a result, the Mid Atlantic will stay dry with high pressure building southward from Canada.
Currently, a back door cold front is just north of the region close to the western Kentucky/Tennessee border. On Friday, an upper level trough will move through western Arkansas and into northern Louisiana. Temperatures will be cooler behind the cold front with highs in the lower 50s to mid 60s. High pressure will build back into the region Friday night starting a prolonged period of dry weather. Temperatures will be cooler Friday night with lows Saturday morning in the lower 30s to around 40 degrees.
1003 PM EST Thu Mar 4 2021 A dry cold front will push south across the area early tonight. High pressure builds back in tonight through the weekend, while a developing offshore low is expected to move well south and east of the region over the weekend.
1017 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. Friday/Saturday, upper ridge dominates with spring-like temperatures. Some warmer than guidance readings possible Saturday afternoon given thermal ridge/downslope southwest boundary layer flow. Upper trough moves through Saturday night pushing a dry cold front through the CWA.
A cut off mid level low pressure is found over Kansas early this morning, and is expected to pass well southwest of our area. High pressure will center over the CWA today and tonight, resulting in dry weather, and very light winds. This seems too cold, and looking at initialization over snow, we are running well above model forecasts, which are as cold as single digits, vs reality in the lower to mid 20s.
This low passes near the southern border of the marine portion of the forecast area Friday night through Saturday. Temperatures around seasonal norms are expected tonight through Friday night, with low temperatures in the low to mid 40s, and high temperatures in the low 70s expected Friday.
1042 PM MST Thu Mar 4 2021 LAramie down in freezing fog this evening. Went ahead and added areas of freezing fog into the weather grids overnight to cover the Laramie area. 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.
Ongoing upper level low is producing widespread showers and embedded thunderstorms across much of southwest Kansas as of the time of this discussion. The low will continue to move southeast through the rest of morning. As the low moves southeast the upper level forcing for the rain and storms should also move to the south to southeast through the mid morning hours and we should see rain exit the entire region at or a little before noon. We should see skies clear from north to south through the afternoon and as a result highs will be in the lower 60s for those areas that get a little more sun and in the upper 50s for areas along the Oklahoma border which may not see the sun until late in the afternoon.
256 AM CST Fri Mar 5 2021 Impressive vapor imagery this morning of the compact strong upper low centered over the TX Panhandle region and dropping southward in line with model solutions. Precip chances will remain highest on the northern periphery of the upper low while gradually translating southeastward with the track of the weakening wave.
CD Chattanooga Airport, TN 58 37 56 32 58 / 0 10 0 0 0 Knoxville McGhee Tyson Airport, TN 52 32 52 29 53 / 0 10 0 0 0 Oak Ridge, TN 54 32 53 29 54 / 0 10 0 0 0 Tri Cities Airport, TN 49 27 49 25 49 / 0 10 0 0 0.
1150 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.
1056 PM EST Thu Mar 4 2021 Water vapor imagery highlights a long wave upper trough axis pivoting to the east of Florida. A mid level cyclone is moving into the Plains, north of a large mean layer ridge complex over Central America and the Caribbean. A small and weak low pressure system is lumbering to the south near the northern Bahamas, enhancing the kinematic fields spilling south through the Florida Keys and the southeastern Gulf of Mexico. A weak low pressure system will lumber to the south near the northern Bahamas tonight. Another area of low pressure will dive through Florida Saturday and Saturday evening, pushing a frontal boundary through the coastal waters of the Florida Keys.
TAFs carry lowering ceilings before sunrise, and expect some lifting of the deck in the late morning through afternoon hours along with the potential for mainly SHRA development ahead of the next cold front. Rain chances are still on tap for tomorrow with the passage of the next cold front. Colder air should arrive by the evening hours as the upper low moves down enough to the SE.
High pressure will keep the forecast area mostly clear overnight, and winds will mostly remain light, so the main adjustment was to lower low temperatures somewhat over the plains. Coulston Expect mild temperatures across the region on Friday, however, cooler temperatures and a chance for showers will move into the region by Saturday afternoon.
1042 PM MST Thu Mar 4 2021 The upper low is currently seen spinning over southeast Colorado with scattered convective showers across southwest Colorado and moisture wrapping around from the east across much of west-central and northwest Colorado. High pressure will amplify across the Great Basin and begin to shift eastward over the western slope. Yes, this means a return to 60 degree temperatures for the lower valleys of west- central Colorado and east-central to southeast Utah. Let the warming trend commence as the ridge of high pressure translates eastward allowing winds to become more southerly ushering in warmer temperatures.
254 AM EST Fri Mar 5 2021 Broad upper ridging is sitting over the Lower 48. Within this ridge, a stacked low pressure system is generating precipitation to areas near Kansas and Oklahoma, but as we move through the day, the low pressure system will begin to disband as it moves towards the Lower Mississippi Valley. Winds go near calm as the center of high pressure nears the Lower Ohio Valley from the north. Expect a chilly weekend as we start off with a full-latitude east coast upper trof, and an upper ridge building over the Plains.