Aikyam-Lab/Synoptic-Bench huggingface dataset:
315 AM MDT Sat Mar 21 2020 Today will be dry and warmer with highs in the 40s to lower 50s thanks to some downslope flow. Models agree a short wave trough will track NW to SE across the region late tonight into Sunday with a shot of scattered to numerous rain/snow showers. Highs will be cooler Sunday, but still in the 40s.
745 AM EDT Sat Mar 21 2020 A cold front will drift into north GA this morning.
Sunday will bring a return to mostly sunny, and trending warmer conditions.
629 AM EDT Sat Mar 21 2020 Cooler today under dirty high pressure.
515 AM MDT Sat Mar 21 2020 Current surface map places high pressure across the upper midwest with warm front across Montana into eastern Wyoming. This will result in warm front moving into western South Dakota early today. Cold front tries to sneak into northern portions of forecast area tonight. Some uncertainty on the plains of western South Dakota where NAM/GFS have trended a bit cooler.
758 AM EDT Sat Mar 21 2020 Despite a cold front being draped across the southeast U. A strong ridge of high pressure will continue to influence local weather patterns, leading to the continuation of unseasonably warm temperatures and dry weather. The influence of the high pressure is very evident in the sounding this morning. This should allow the sea breeze to kick in around normal for most locations, helping to keep coastal areas cooler. VFR conditions will prevail under high pressure. High pressure remains in control with winds of 15 knots or less and seas of 2ft or less.
Convergence to increase through the day between a stalled frontal boundary and coastal trough just south of South Texas. This will lead to chances for scattered showers and isolated thunderstorms for today developing to the south and building northward as the frontal boundary slowly lifts north as a warm front this evening. Tonight, lows are not expected to drop a lot, with coastal areas in the lower 60s and near steady temps in the upper 50s out west. For Sunday, as the warm front continues to lift north of the region, southeast flow will return to South Texas, warming temperatures back into the upper 70s to lower 80s.
A weakening upper low will remain situated over the region today, with lingering afternoon showers over the northern Sierra and higher elevations of Western Plumas County. Shower activity ends Saturday evening as the upper low weakens and pushes east into Nevada. A pattern change is anticipated late this weekend as a Pacific upper low approaches from the west, with light precipitation moving into areas south of I-80 by Sunday afternoon.
/Issued 745 AM EDT Sat Mar 21 2020/ A cold front will drift into north GA this morning.
Synoptically speaking a weak upper low remains nearly stationary near the Delta with a solid vort max associated with it. All precip should gradually diminish late Saturday afternoon into early Saturday night as the upper low weakens and moves eastward. Round two is associated with a much more potent low pressure system.
618 AM CDT Sat Mar 21 2020 A warm front is predicted to move into wrn Nebraska today.
A weak cold front has pushed through the area and is now temporarily stalled along the northern Gulf. The front will retreat northward as a warm front this afternoon through Sunday. Cooler temperatures expected today with weak cool air advection along with weak isentropic lifting ahead of a retreating warm front. A return to near 80 and above temperatures expected for the beginning of the week as warm front moves north of the area by Sunday.
High pressure will build into the area through the weekend with moderating temperatures and more sunshine, but chilly morning lows. An upper low is presently located near 34N/136W with a smaller upper low near the Bay Area.
620 AM CDT Sat Mar 21 2020 At 3 AM, high pressure was providing light winds. On Sunday, a low pressure system will move from the Central Plains east into the Mid Mississippi River Valley. At this time, the highest chances (albeit small) will be in southwest Wisconsin and northeast Iowa. On Sunday night, a cold front will move east through the region. Depending on temperatures, there may be the possibility of some light freezing rain in northeast Iowa and southwest Wisconsin.
As far as temperatures are concerned, this weekend will be seasonable with highs in the 50s for most valley locations, except in the lower 60s in central Idaho. Yesterday, the high temperature hit 64 degrees in Lowell, Idaho.
828 AM EDT Sat Mar 21 2020 Dry and cooler weather will remain in place through Sunday under high pressure.
522 AM EDT Sat Mar 21 2020 Dry and cooler weather will remain in place through Sunday under high pressure.
551 AM CDT Sat Mar 21 2020 A milder day ahead as high pressure slides off to the east and a southerly flow returns to the area.
248 PM EDT Sat Mar 21 2020 The afternoon surface analysis shows high pressure is progressing east across the Upper Great Lakes, but this extends southward into the Ohio Valley. This feature is helping to keep low level moisture trapped between the low level inversion. Tonight as we see the low level clouds break up expect more high clouds progressing in ahead of the next storm system. The high being more displaced northward and some high clouds moving in will greatly lower the chances of frost tonight. As for Temperatures Sunday, the inverted trough axis will allow for a gradient to set up with the Bluegrass remaining cooler versus the warmer southerly flow pattern allowing for warmer weather in the Cumberland Valley.
1121 AM MDT Sat Mar 21 2020 Current surface map places high pressure across the upper midwest with warm front across Montana into eastern Wyoming. This will result in warm front moving into western South Dakota early today. Cold front tries to sneak into northern portions of forecast area tonight. Some uncertainty on the plains of western South Dakota where NAM/GFS have trended a bit cooler.
1118 AM MDT Sat Mar 21 2020 Overnight WV/IR imagery depicted a split flow aloft with the CWA sandwiched between a northern stream trough over the north-central CONUS and southern stream trough over the southwest CONUS.
Late day and evening convection will be possible near a surface boundary across eastern Colorado as an upper level trough moves east out the Rockies and into the West Central High Plains. As the upper level trough moves into southwest Kansas after 03z Sunday the GFS and NAM both begin to improve 850mb to 700mb moisture transport and 850mb warm air advection across south central Kansas. On Sunday this upper level trough will continue to move east as a weak surface cold front moves across western Kansas. Little, if any, cooling can be expected behind this cold front given the westerly downslope flow forecast across southwest Kansas. Sunday night the surface cold front will become nearly stationary across southwest Kansas as an upper level trough crosses the Northern Plains and another upper level trough approaches from the west/southwest.
1229 PM CDT Sat Mar 21 2020 The weather remains pretty quiet today with pseudo zonal flow across our region, with the overall pattern across the CONUS featuring spit flow with northern stream troughs translating across Alberta/Saskatchewan and the upper Midwest region and southern stream energy was lifting out of the desert southwest. high pressure centered in eastern Neb will migrate east today and low pressure will develop over CO ahead of the system moving out of the southwest CONUS. Southerly wind speeds will be on the increase in a tightening pressure gradient in between the departing ridge to the east and the trough/low pressure to the west. The system tonight is slower to depart than models indicated 24 hours ago and chances for rain linger across our southern/eastern zones Sunday morning or early afternoon before the trough axis departs.
Isentropic lift will set up this evening into tonight before a warm front lifts north of the area mainly after midnight. With a warm front moving in, will expect a generally steady to slowly increasing temperatures, especially after midnight. A southerly flow will return behind the warm front.
The exception may be in West Tennessee along the Tennessee River where the clouds may not move in soon enough and temperatures will be a little cooler.
On the heels of this system is a northern stream trough. A weak cold front will move through overnight with low from 25 to 30.
Surface lee troughing and low level ridging and downslope flow will result in dry conditions and much above normal temperatures through much of the week.
A cold front continues to slowly move offshore early this afternoon and will stall just south of the coast tonight. This is where the highest rain chances will be along with few isolated thunderstorms. Lows tonight will range from the low to mid 50s across the northwest to low to mid 60s along the coast. Highs on Sunday will be in the low to mid 70s across northern areas to mid and upper 70s to the south.
Chambers Today will be dry and warmer with highs in the 40s to lower 50s thanks to some downslope flow. Models agree a short wave trough will track NW to SE across the region late tonight into Sunday with a shot of scattered to numerous rain/snow showers. Highs will be cooler Sunday, but still in the 40s.
318 PM EDT Sat Mar 21 2020 Eastern Canadian high pressure will shift eastward through Sunday, but keep our weather dry.
/Tonight through Sunday night/ Cloudy and cool today as the temperature inversion a few thousand feet up just would not budge and has locked in the low clouds and the chilly air. This is an upper disturbance that will lift this cold front back to our North by this time on Sunday.
203 PM MDT Sat Mar 21 2020 19z surface analysis had low over north central WY with warm front arcing into western SD and then eastern CO. Most impact will be felt near the higher terrain where cooler temperatures present.
A closed low aloft and associated jet streak has been tracking through the forecast area, with areas of light snow across northwest and south central North Dakota ongoing this afternoon. As the upper low slowly moves off to the east this evening, chances for snow will taper off, and a quiet night is expected, with overnight lows in the lower teens north to lower 20s south. Warmer weather to start the week will be followed by a widespread chance for precipitation midweek and cooler temperatures. Westerly flow aloft with modest warm air advection at the lower levels will bring pleasant weather to start the work week.
Otherwise scattered cloud cover across much of the forecast area, with the southwest currently seeing sunny skies and above freezing temperatures. With returns at this time showing up on regional radars, yet no precip at the surface yet, believe its just a matter of time before the lower atmosphere gets saturated.
In turn, the cold frontal boundary will lift back to the N-NE. This will allow the low level winds to shift around pretty quickly to E-SE by Sunday. More abundant sunshine on Sunday will allow for a return of warmer weather and higher temperatures, mainly in the 80s.
339 PM EDT Sat Mar 21 2020 High pressure ridge will cross the region tonight, breaking up the clouds.
Temperatures have climbed into the 45 to 55 degree range where snow cover is absent, and into the lower 40s where snow is abundant. Locally heavier accumulations are possible for the favored foothills locations and some of the higher hills across SE Montana. By Sunday afternoon this system will exit the area and partly cloudy skies should allow temperatures to push back into the lower 40s for afternoon highs. Chambers Downslope gradient in the wake of Sundays system will bring dry and warmer conditions.
Dewpoints in the 30s in Oklahoma being to push north in response with top-down moistening keeping much of the lower levels above freezing. Northern locations look to be the last to saturate and temps may fall into the lower 30s as precip begins late tonight. Will keep some mention of mixed precip there around 12Z but afternoon soil temps remain in the lower 40s and should keep any impacts from any wintry precip low.
321 PM CDT Sat Mar 21 2020 A strong high pressure system will move east toward New England and Quebec by Sunday morning.
Current observations show temperatures are in the lower to mid 80s with easterly winds 10 to 15 mph.
1103 AM EDT Sat Mar 21 2020 Dry and cooler weather will remain in place through Sunday under high pressure.
With mid and upper level moisture already increasing ahead of a short wave trough, rain is expected to start this evening.
Temperatures will remain above normal with daytime highs in the lower to mid 80s and overnight lows in mid 70s.
We could get a little bit of snow or even sleet/freezing drizzle, but any amounts looks like they would be so light that it would preclude a Winter Weather Advisory at this time.
249 PM CDT Sat Mar 21 2020 High pressure in place will be shoved eastward overnight as a disturbance lifts out of the lower MS Valley. Cloud cover will increase ahead of this disturbance and keep overnight lows in the low to mid 40s. Scattered showers will return late Sunday morning and spread across the TN Valley through the day as a weak warm front lifts northward.
249 PM EDT Sat Mar 21 2020 Widespread stratus and CAA behind a strong cold front have kept temperatures quite cool this afternoon. Many locations are 30-35 degrees cooler than what they were 24 hours ago. We'll start off Sunday dry and with perhaps some filtered sunshine through the high/mid level cloud deck. For the time being, will broadbrush PoPs Sunday afternoon across the region, with the highest staying west of I-65.
Today's trough came with more moisture than previous thinking, so have boosted PoPs for tonight and Sun may not quite be as precipitation-free as previous thinking either. By Mon morning, a rather large and deep closed low is at the coast, bringing a warm moisture plume up from the southwest and into southern Idaho. The upper level low is now expected to stall over the tri-state area of NV-ID-UT and sweep return flow over the northern zones, while the south stays under the low. It will struggle to get above freezing at places such as Stanley and Island Park, above 6000ft. Thu night looks like the driest as the upper level trough has moved through.
The lower atmosphere overnight will remain moist and capable of at least patchy fog until the low level flow veers more southwesterly early Sunday. Sunday will feature drying and warming with high temperatures mostly into the lower 70s.
144 PM EDT Sat Mar 21 2020 Plume of moisture advecting inland off Lake Huron continues into the afternoon as show by the visible satellite imagery with the low clouds still extending over the waters. With high pressure and subsidence building overhead into tonight, the scouring out of clouds will continue, leading to clear skies tonight. A 1040 mb high pressure will move across the northern Great Lakes today bringing a period of dry weather that continues into tomorrow.
256 PM CDT Sat Mar 21 2020 Its a mostly sunny but cool day outside across the Ozarks this afternoon with high pressure to the northeast of the area and light northeast winds.
This will be a warmer day with temperatures over the fresher snow pack just above freezing and temperatures over the older snowpack in the upper 30s to low 40s.
156 PM EDT Sat Mar 21 2020 An upper-level trough feature has been working to erode the ridge overhead, but with very limited success. Between both of these, the ridge axis will shift to the East, but it will not relinquish control. An even stronger ridge is expected to build in from the west late in the work week. This is expected to drive temperatures into the low-to-mid 90s across portions of the interior as the weekend arrives.
High pressure will bring a brief warming and drying trend for Sunday, followed by a return of unsettled weather beginning early in the new week. Building heights on Sunday will reduce any showers to isolated coverage over the higher terrain.
319 PM EDT Sat Mar 21 2020 Eastern Canadian high pressure will shift eastward through Sunday, but keep our weather dry.
Despite cloudiness, it should be warmer Sunday with highs in the lower 70s.
1233 PM CDT Sat Mar 21 2020 A milder day ahead as high pressure slides off to the east and a southerly flow returns to the area.
1234 PM CDT Sat Mar 21 2020 A warm front is predicted to move into wrn Nebraska today.
Daytime temperatures will remain roughly 10 degrees cooler than normal through the short term primarily thanks to recent precipitation and consistent cloud cover.
1233 PM EDT Sat Mar 21 2020 High pressure will approach the region through Sunday, crest Sunday night.
318 PM EDT Sat Mar 21 2020 High pressure moving from Ontario into Quebec will continue east reaching New England on Sunday.
1231 PM CDT Sat Mar 21 2020 At 3 AM, high pressure was providing light winds. On Sunday, a low pressure system will move from the Central Plains east into the Mid Mississippi River Valley. At this time, the highest chances (albeit small) will be in southwest Wisconsin and northeast Iowa. On Sunday night, a cold front will move east through the region. Depending on temperatures, there may be the possibility of some light freezing rain in northeast Iowa and southwest Wisconsin.
156 PM EDT Sat Mar 21 2020 A cold front will push southward and through the region into tonight.
However, meso models suggest there could be some light pcpn this evening as the isentropic upglide works on/increases the low saturation (drizzle look). Will increase chances for this evening (mainly southeast MN) with concerns for light pcpn, then trend back to the north with the high chances overnight. The first trough of note looks to move east/northeast out of desert southwest, sliding across the mid mississippi river valley Tue.
The cold front is well east of the region as of 1430Z located from the central Carolinas through southern GA. Clouds are gradually thinning as drier air works into the region behind a cold front, and this trend will continue this afternoon and tonight starting around CHA then working northeastward. Garuckas Chattanooga Airport, TN 43 62 52 67 52 / 0 80 90 70 10 Knoxville McGhee Tyson Airport, TN 41 63 51 64 49 / 0 70 90 70 10 Oak Ridge, TN 41 62 52 63 48 / 0 70 90 70 10 Tri Cities Airport, TN 38 60 44 59 44 / 0 40 90 80 10.
With PoPs exiting stage right with passage of the short wave trough, we've removed mention of same with this update. Surface lee troughing and low level ridging and downslope flow will result in dry conditions and much above normal temperatures through much of the week.
510 PM EDT Sat Mar 21 2020 Eastern Canadian high pressure will shift eastward through Sunday, but keep our weather dry.
The cold front remains very shallow and looks to retreat back to the north tomorrow as this happens temperatures tomorrow afternoon will rebound into the upper 70s to near 80. In addition ridging aloft will see rains ending with a dry warm pattern setting up for the coming week.
840 PM EDT Sat Mar 21 2020 A cold front will push southward and through the region into tonight.
538 PM CDT Sat Mar 21 2020 Updated aviation section for 00z tafs A strong high pressure system will move east toward New England and Quebec by Sunday morning.
Showers will taper off this evening, leading to a drier and warmer Sunday.
730 PM EDT Sat Mar 21 2020 Eastern Canadian high pressure will shift eastward through Sunday, but keep our weather dry.
255 PM PDT Sat Mar 21 2020 Few afternoon afternoon showers possible over the northern Sierra, otherwise dry weather is expected for most of the weekend with warmer temperatures.
After a quiet and cooler day, rain chances will again increase across the forecast area overnight. The front that brought us the cooler conditions Saturday, will lift back north through the region overnight into Sunday. Conditions will also be a bit warmer and humid during the day, with highs ranging from the lower 60s north to the upper 70s south.
1035 PM EDT Sat Mar 21 2020 Currently - High pressure over the eastern United States and off the southeastern coast, along with lower pressure in the Caribbean sea is producing gentle east breezes across the Keys. Broad deep layered ridging remains in place across the area. Weak ridging to our north, along with lower pressure in the Caribbean Sean will maintain gentle to moderate northeast to east breezes across Keys waters through the overnight period.
Overnight lows will dip into the low 60s region-wide.
628 PM CDT Sat Mar 21 2020 A cool spring day with temperatures generally in the low and mid 40s across the forecast area after a rather frosty morning with temperatures starting out in the 20s. Low-level moisture will be slower to work north, but models have trended towards the lower levels saturating much more quickly then previous guidance was suggesting. Temperatures are expected to stay above freezing for all but far northern Missouri where temperatures will be near freezing to a few degrees above.
High pressure will maintain mostly sunny skies and chilly overnight temperatures across the area through the weekend.
1043 PM EDT Sat Mar 21 2020 High pressure ridge will cross the region tonight, breaking up the clouds.
High pressure in place will be shoved eastward overnight as a disturbance lifts out of the lower MS Valley. Cloud cover will increase ahead of this disturbance and keep overnight lows in the low to mid 40s. Scattered showers will return late Sunday morning and spread across the TN Valley through the day as a weak warm front lifts northward.
228 PM PDT Sat Mar 21 2020 Weak upper ridging will result in tranquil weather and slightly warmer conditions through Sunday.
However, meso models suggest there could be some light pcpn this evening as the isentropic upglide works on/increases the low saturation (drizzle look). Will increase chances for this evening (mainly southeast MN) with concerns for light pcpn, then trend back to the north with the high chances overnight. The first trough of note looks to move east/northeast out of desert southwest, sliding across the mid mississippi river valley Tue. Light snow continues to spread across the area but is struggling to reach the ground due to some lingering dryness in the low levels.
Surface analysis this evening places a cold front/quasi-stationary boundary from Georgia into the Northern Gulf of Mexico. The exception may be in West Tennessee along the Tennessee River where the clouds may not move in soon enough and temperatures will be a little cooler.
High pressure aloft will bring a brief, but modest warming and drying trend to the area Sunday.
703 PM EDT Sat Mar 21 2020 Dry and cooler weather will remain in place through Sunday under high pressure.
Most of the low clouds dissipated after sunset and mostly clear skies will prevail tonight with no precipitation. Lows will drop to the lower to mid 60s.
Even with some breaks, the cirrus and mid deck is on the approach ahead of the next wave building toward the Lower Mississippi Valley. Lows still expected in the low to mid 40s most spots with some mid to upper 30s on the plateau and parts of Southwest Virginia.
530 PM MDT Sat Mar 21 2020 19z surface analysis had low over north central WY with warm front arcing into western SD and then eastern CO. Most impact will be felt near the higher terrain where cooler temperatures present.
820 PM EDT Sat Mar 21 2020 Eastern Canadian high pressure will shift eastward through Sunday, but keep our weather dry.
702 PM EDT Sat Mar 21 2020 A cold front will push southward and through the region into tonight.
Widespread stratus and CAA behind a strong cold front have kept temperatures quite cool this afternoon. Many locations are 30-35 degrees cooler than what they were 24 hours ago. We'll start off Sunday dry and with perhaps some filtered sunshine through the high/mid level cloud deck. For the time being, will broadbrush PoPs Sunday afternoon across the region, with the highest staying west of I-65.
1042 PM EDT Sat Mar 21 2020 Eastern Canadian high pressure will shift eastward through Sunday, but keep our weather dry.