Aikyam-Lab/Synoptic-Bench huggingface dataset:
243 PM CDT Sat Mar 20 2021 High pressure to our north will result in clear skies and light winds overnight, which will make for ideal radiational cooling conditions. The aformentioned high pressure will shift to the east on Sunday, which will veer flow to more southeasterly at the SFC. Afternoon temperatures will be slightly warmer on Sunday compared to today, topping out in the mid to upper 60s.
Breezy and showery conditions will continue through this afternoon and evening as an upper level trough moves through western Montana and central Idaho.
420 PM EDT Sat Mar 20 2021 19z sfc analysis shows high pressure to the north dominating our weather with sunny skies, light winds, and very dry dewpoints. Specifically, readings are generally in the low 60s across the area while dewpoints are very low - in the teens on the ridges to the low and mid 20s in some of the valleys. They all depict some 5h weakness to the southeast of Kentucky initially and tonight before ridging works into the state from the west on Sunday and Sunday night.
138 PM EDT Sat Mar 20 2021 Strong high pressure remains in control through the TAF period leading to SKC and VFR conditions through Sunday morning.
High pressure centered over Lake Erie will continue to control the weather over central Indiana for today. Subsidence from the high will keep clear skies in place and light easterly component winds will be the rule. Strong subsidence with high pressure both aloft and at the surface will result in a dry weekend with plenty of sunshine. Early in the forecast period, the ridge axis will be just west of the Mississippi River, gradually shifting directly over Indiana by Sunday. Overnight lows will dip close to the freezing mark tonight.
The post frontal airmass of this weak trough that passes through overnight will also have about 30 to 40kts at 1/2km, so breezy to gusty winds on the backside with mixing up to nearly 700mb in the slightly cooler airmass.
1006 AM CDT Sat Mar 20 2021 High pressure centered over the Great Lakes will result in a beautiful first day of Spring for the Tennessee Valley. Afternoon temperatures top out in the lower 60s, which compared to yesterday will feel quite nice.
Air temperatures have warmed into the lower or mid 70s in most Keys island communities, with dewpoint temperatures steady in the mid to upper 50s. A weak low pressure area has developed in the vicinity of the northern Bahamas, and has created a divergent west to north near-surface flow across the Keys and adjacent waters, with moderate west breezes over the upper Keys and gentle north breezes at the Dry Tortugas. The weak low pressure area will drift northward, further interrupting the gradient flow along the southern extent of a sprawling eastern U.
244 PM CDT Sat Mar 20 2021 An upper level trough to the west currently has the Northern Plains in southwesterly flow aloft. Ahead of the trough, we've seen winds on the windy side with gusts to around 40 mph. Winds will stay up a bit this evening, diminishing slowly through the night and switching to the northwest as the cold front pushes through the area. Rain is expected with the cold front and mid level trough. Temperatures will be cooler tomorrow, with highs mainly in the upper 40s to low 50s. Clustered ensemble means seem to be gaining more run to run consistency painting a picture of an upper low south to southeast of our forecast area tracking to the northeast.
An upper level ridge of high pressure will continue to build over the state of Missouri, suppressing the atmosphere from any precipitation chances through the rest of the weekend. Temperatures tonight will be quite a bit warmer than this morning with lows in the lower 40s. Sunday night's overnight low will only drop into the low to mid 40s.
/Today/ Despite high pressure at the sfc, nuisance cloud cover continues to infringe upon the ern half of the region this morning. /Today through Sunday/ A 700mb trough extending across the Deep South continues to maintain a fairly unbroken stratus deck across northeast Louisiana and south-central Arkansas this morning. Overnight low temperatures forecast to fall into the lower to middle 40s. Otherwise, under the influence of surface and upper-level ridging on Sunday, expect mostly sunny skies with high temperatures in the upper 60s to lower 70s.
Dewpoints have nudged up just a tad, but with clear skies and with a bit of south-southeasterly wind, temperatures tonight will hold a bit warmer -- most locations in the 30s. With the continued warming on Sunday but some moistening also, RH percentages should again drop into the lower 30s, or even sneak into the 20s.
Strong high pressure will be north northeast of the region this period, with an inverted trough over the coastal waters. Rain chances due to the inverted trough will be greatest at the coast, but enough moisture and lift is expected to push inland for the whole forecast area to have a chance this period.
Expect most areas to eventually become partly cloudy tomorrow with highs mostly in the low to mid 70s except in the upper 60s to around 70 at the coast.
1239 PM CDT Sat Mar 20 2021 The main forecast challenges over the next several days include a big temperature swing with a cold front this weekend and a mid- latitude cyclone affecting the Great Plains early week. This setup will lead to even warmer and windier conditions than yesterday.
With the exiting upper level ridge, clear skies will give way to some occasional cloud cover and partly cloudy skies on Sunday.
310 PM EDT Sat Mar 20 2021 For the remainder of the weekend, high pressure will continue to promote mild weather conditions.
High pressure will continue to dominate the next 24 hours, shifting east, allowing light winds to veer to east and then southeast on Sunday. Excellent flying conditions across South Texas as high pressure remains overhead. /issued 314 AM CDT Sat Mar 20 2021/ SHORT TERM (Today through Sunday): High pressure at the surface and aloft remain over the region today with their respective axes tracking east of the coast Sunday.
1129 AM EDT Sat Mar 20 2021 After a cool start in the 30s this morning with widespread frost across the northeast half of the forecast area temperatures are warming nicely despite colder and drier air filtering in from the northeast from high pressure centered over the northeast states and the northeast to east flow around this system bringing the region sunny skies. VFR through the period as high pressure prevails favoring light nly winds and high cirrus or SKC at all sites.
SHORT TERM (Now through Sunday Night): High pressure at the surface and modest ridging aloft are over the region today. The atmosphere remains dry today with light winds as overhead high pressure shifts slowly east.
An upper level ridge will continue to build tonight across South Texas before eventually moving eastward tomorrow afternoon into tomorrow night. Highs tomorrow will be about 5 to 10 degrees warmer than today with highs ranging between the mid 70s top mid 80S.
/Today/ Despite high pressure at the sfc, nuisance cloud cover continues to infringe upon the ern half of the region this morning. /issued 625 AM CDT Sat Mar 20 2021/ A weak low-level trough across the region will maintain low VFR ceilings across the MLU/ELD terminal sites, possibly extending westward across the SHV/TXK sites through 20/20Z before conditions gradually improve thereafter. /Today through Sunday/ A 700mb trough extending across the Deep South continues to maintain a fairly unbroken stratus deck across northeast Louisiana and south-central Arkansas this morning. Overnight low temperatures forecast to fall into the lower to middle 40s. Otherwise, under the influence of surface and upper-level ridging on Sunday, expect mostly sunny skies with high temperatures in the upper 60s to lower 70s.
141 PM PDT Sat Mar 20 2021 A few light snow showers will stick around this evening, and possibly overnight in the eastern Sierra, as weak low pressure slowly exits the region.
(This evening through Sunday) Warmer tonight with lows mainly in the 40s, as southeast to south winds stay up in the 5 to 15 mph range. Breezy and sunny Sunday, particularly over the Big Country and Concho Valley as a lee trough develops along the Texas and New Mexico border.
Further southeast, portions of southwest Illinois and southeast Missouri will be closer to the ridge axis tonight so light/variable winds are forecast. As a result, leaned at or below the 25th percentile of the NBM for lows tonight which resulted in the low to mid 30s. The moderating trend should continue into the day on Sunday as south/southeasterly winds advect warmer air into the bi-state area. Elected to not go warmer due to at least a moderate increase in higher level cirrus clouds during the day tomorrow and a slight easterly component to the surface winds. The trend of increasing mid/high level cloudiness is likely to continue as southwest flow aloft increases downstream of a longwave trough over the southwest CONUS.
313 PM EDT Sat Mar 20 2021 Strong high pressure centered over southern Ontario has maintained large scale subsidence preventing cloud formation today. Clear skies will promote efficient radiative cooling tonight allowing lows down around if not slightly below freezing. Pleasant weather continues through the remainder of the weekend as the strong high pressure drifts into the eastern Great Lakes/Northeast with SE MI remaining under its western edge. The upper level ridge axis will cross the region Sunday allowing for deeper southerly flow across lower MI. Highs will be able to crack the 60-mark with most areas expected to reach into the low 60s (areas along the lakeshores will be a touch cooler in the upper 50s to near 60).
High pressure centered over the central Great Lakes will move east reaching the New England coast by Sunday morning.
252 PM MDT Sat Mar 20 2021 Current Visible Satellite loop shows bands of mid to high level cloudiness lifting northeast across the area ahead of the main cold front and associated upper level trough, which is still pushing across western Wyoming this afternoon. Some of the colder areas which are struggling to mix out the cold air remain in the 40s and will likely not warm up too much more before the cold front arrives this evening.
330 PM CDT Sat Mar 20 2021 A mid/upper ridge axis was situated across the Southern and Central Plains states today.
Low to mid level cloudiness over the region late this morning is gradually eroding, especially north of the Highway 84 corridor, and expect southward erosion trend later this afternoon and we expect to see a little more sunshine down toward the coast as well. Northwesterly flow aloft dominates through the period on the back side of an upper trof over the southeast Atlantic coast with ridging over the central Gulf coast. Highs on Sunday ranging from the upper 60s to the lower 70s.
424 PM EDT Sat Mar 20 2021 High pressure centered over the central Great Lakes will move east reaching the New England coast by Sunday morning.
High temperatures this afternoon will range from the low 60s in the northeast, to low 70s across the west. Wind speeds should stay near 5 to 10 mph overnight and will make for a slightly warmer night with low temperatures in the 40s. Sunday afternoon will be a bit warmer than today with highs in the upper 60s to mid 70s.
1238 PM EDT Sat Mar 20 2021 A high pressure area will bring sunny skies this weekend with highs in the 50s today, warming into the 60s Sunday.
High pressure centered across the eastern Great Lakes will dominate the Ohio, Mid Atlantic States and the Tennessee Valley through the day Sunday. Highs Sunday will warm a few degrees over today, into the lower to mid 60s.
High pressure will continue to build into the region today and tomorrow as an upper-level ridge develops overhead. High pressure is building into Middle Tennessee from the northeast, with dry air blanketing the mid state.
High pressure will continue to build into the region today and tomorrow as an upper-level ridge develops overhead.
A cold front will approach from the west Sunday and should allow winds to ease from west to east during the afternoon. The work week looks wetter and cooler, as the upper air pattern transitions to persistent troughing over the central CONUS.
Overnight low temperatures are forecast to range from the lower 40s across the Hill Country to the upper 40s across the Rio Grande Plains. Sunday's highs are expected to reach the lower 70s across the Hill Country to near 80 across the southwest counties of South Central Texas.
/issued 1034 AM CDT Sat Mar 20 2021/ An upper trough currently located over the Mid-South will continue to move east this afternoon. Highs should reach into the lower to mid 60s. Temperatures should top out in the lower 60s this afternoon.
The net effect will be another cool and cloudless night across the region as temperatures sink into the lower 30s with drier dewpoints in place and full radiational cooling expected. We went on the warmer side of guidance for temperatures Sunday afternoon with highs in the mid-to-upper 60s.
/Tonight through Sunday Night/ Nwly flow aloft continues, as an upper ridge axis builds just to our w and n. Lingering low level moisture associated with low pressure to our e continues to keep a deck of clouds in over portions of the region this aftn. Some model output indicates that we will see some redevelopment of the low clouds again Sunday, this time concentrated across E TX/Deep E TX. Nevertheless, we should see temps climb to near 70, as the upper ridge axis passes ovhd and high pressure remains in control at the sfc.
333 PM CDT Sat Mar 20 2021 H5 analysis from this morning had a low amplitude ridge across the central CONUS. West of this feature, a broad trough of low pressure extending from western British Columbia, south to the northern California coast. At the surface, a large area of high pressure was anchored over the eastern Great Lakes. West of this feature, a cold front extended from western North Dakota into central Wyoming. A strong cold front will approach the northwestern forecast area around 06z tonight, passing through the forecast area by 12z Sunday. The only area of concern for very light pcpn will be over the far northwestern forecast area, mainly over the Pine Ridge, where some limited moisture exists tonight. On Sunday night, an H5 trough will deepen across the Four Corners.
High pressure centered over the Great Lakes will result in a beautiful first day of Spring for the Tennessee Valley. Afternoon temperatures top out in the lower 60s, which compared to yesterday will feel quite nice.
After a cool start in the 30s this morning with widespread frost across the northeast half of the forecast area temperatures are warming nicely despite colder and drier air filtering in from the northeast from high pressure centered over the northeast states and the northeast to east flow around this system bringing the region sunny skies. VFR conditions for the rest of the day into Sunday as High Pressure and clear skies continue across east Tennessee.
Currently we have a trough sitting off the coast near Jacksonville. Models are shows a weak low developing at the surface associated with that trough sometime today or early tomorrow. As we start next work week the low will start to push east and away from us. Behind it will be high pressure and quiet weather.
As far as temperatures go, the current reading at DIA is 12 degrees warmer than it was yesterday at this time. Southwest flow aloft will strengthen today as the upper level ridge axis shifts east of the forecast area. For tonight, a short wave and cold front will push east into the area. The cold front will likely arrive by mid to late evening across the northern mountains, bringing a period of moderate to perhaps briefly heavy snowfall.
1142 AM MDT Sat Mar 20 2021 High clouds increased over the forecast area overnight as a deep Pacific mid-level trough made landfall early this morning. Models remained consistent in moving the trough over the Great Basin during the afternoon, driving the surface cold front associated with this system across northeast Utah and extreme northwest Colorado during the latter part of the afternoon.
225 PM CDT Sat Mar 20 2021 A warming trend is underway today, with temperatures expected to top out this afternoon pretty close to normal in the lower to middle 70s for most. Weak ridging overhead today will transition to southwesterly flow Sunday ahead of an approaching positively tilted trough to the west.
A cold front will push through the area this morning, bringing breezy winds to the region. A few thunderstorms have formed along and behind the cold front this morning across central Nye County. Any sustained convective activity should remain across central Nye and northern Lincoln Counties as the cold front moves southward into a more stable evironment.
314 PM EDT Sat Mar 20 2021 Strong subsidence with high pressure both aloft and at the surface will result in a dry weekend with plenty of sunshine. The ridge axis will gradually shift eastward, passing over Indiana Sunday into early Sunday night. Cloud coverage will increase to partly cloudy Sunday night as an upper trough makes its way towards the area, increasing the moisture content aloft. Winds will be slightly breezier Sunday afternoon across the NW portion of the forecast area due to a low level jet setting up to the NW and N along the front edge of the approaching trough.
1225 PM CDT Sat Mar 20 2021 An upper level ridge over the plains this morning will gradually slide east through the day with and upper level trough moving into the region on Sunday. There is good model agreement that an upper level low at 500mb will close off and strengthen as it tracks southeast of our forecast area.
Ahead of this wave, increasing southwesterly flow aloft was forcing lee side troughing over eastern Colorado and a fairly tight pressure gradient across western and central Kansas. On Sunday, a cold front will drop into northern and western sections of the forecast area by late morning and early afternoon.
1153 AM CDT Sat Mar 20 2021 Broad upper-level ridging continues to expand east across most of the central and eastern CONUS. Winds will veer out of the southeast by the morning with the ridge axis passing over the region, and diurnal mixing will tick winds up slightly. High pressure remains the dominant factor for our weather tonight and tomorrow, but an amplified mid- level trough will advance east and impinge on the longwave ridge tomorrow. The result will be a stronger pressure gradient in the low/mid levels and more amplified southerly flow.
Lighter winds and cooler temperatures can be expected in the wake of today's cold front passage. The cold front weakens this evening as it moves into the Las Vegas Valley. The active pattern will continue across the west as a series of troughs bring periods of wind and temperatures that remain a bit below normal. Cold front will continue to slowly push south into the Mojave Desert tonight and Sunday. Winds will shift to a northerly directions with strongest winds forecast within the lower Colorado River Valley Sunday.
Surface analysis shows a weak low pressure area centered between the Southeast Florida coast and the northern Bahamas, with a reinforcing cold front dropping southward across South Florida. A large area of high pressure is centered over western New York State and dominates the eastern CONUS. Overnight, the weak low pressure area is expected to drift slowly to the northeast, while the reinforcing front continues to drop southward, causing our surface winds to shift from NW to N late tonight.
1031 PM EDT Sat Mar 20 2021 High pressure centered over the central Great Lakes will move east reaching the New England coast by Sunday morning.
Over the last hour or so, winds have diminished but still remain breezy, due to a closed low circulating off the Atlantic coast. Light reflectivity returns detected from KMLB also reflect the low pressure center, with bands of sprinkles moving southwest from Daytona Beach into northern Orlando and Lake County. Dense low stratus has expanded over most of the area stretching from the low pressure center offshore. MVFR cigs through much of the night as a low pressure spins offshore east of KTIX. Gale force winds have been consistently reported from Buoy 41009 since late this afternoon, suggesting the proximity and strength of a low pressure centered about 40-50 nm northeast of Cape Canaveral.
Southeasterly winds will keep lows generally in the 40s, slightly warmer than the previous night. High temperatures this afternoon will range from the low 60s in the northeast, to low 70s across the west. Wind speeds should stay near 5 to 10 mph overnight and will make for a slightly warmer night with low temperatures in the 40s. Sunday afternoon will be a bit warmer than today with highs in the upper 60s to mid 70s.
430 PM MDT Sat Mar 20 2021 Current Visible Satellite loop shows bands of mid to high level cloudiness lifting northeast across the area ahead of the main cold front and associated upper level trough, which is still pushing across western Wyoming this afternoon. Some of the colder areas which are struggling to mix out the cold air remain in the 40s and will likely not warm up too much more before the cold front arrives this evening.
/issued 409 PM CDT Sat Mar 20 2021/ Rather than scatter out much less erode, cloud clover persisted overnight and has continued to plague the area today, holding temperatures east of the Sabine River to HWY 165 in the lower/mid 50s, with upper 50s to around 60 to the east and just to the west, and in the lower/mid 60s across the sun drenched western tier of SE TX counties. Given this, have nudged forecast lows a little warmer than the NBM and model consensus. High pressure at the SFC and aloft will prevail on SUN, with temperatures getting close to seasonal normals amid a mix of clouds and sun. The trof is forecast to eject out across the Central Plain/Mid MS River Valley MON night into TUE, dragging a weak SFC front into the forecast area.
Will keep the highlight going, and all look to be in good shape. Going into the evening, expecting the majority of the precipitation be fall as snow with cooler temperatures. Sunday should be dry as some weak ridging moves into the area, but will still be cooler than we have been.
931 PM CDT Sat Mar 20 2021 Sfc ridging is located directly ovhd late this evening, resulting in most locations with calm winds with the exception being across portions of NE TX where light ESE winds were ongoing.
/issued 225 PM CDT Sat Mar 20 2021/ A warming trend is underway today, with temperatures expected to top out this afternoon pretty close to normal in the lower to middle 70s for most. Weak ridging overhead today will transition to southwesterly flow Sunday ahead of an approaching positively tilted trough to the west.
Broad northwest flow remains in place over eastern Oregon and southwest Idaho this evening with a trough axis over eastern Idaho. Gusty surface winds across the lower valleys will begin to wane during the evening as well, with the strongest winds lingering overnight across the Magic Valley of Idaho.
615 PM CDT Sat Mar 20 2021 Clear skies today with slightly warmer temperatures and breezy conditions as southerly flow reestablishes. The lower humidity and breezy conditions will also increase fire weather concerns today, especially across far northeast Kansas and northwest Missouri where the stronger winds will reside. The low-level jet will weaken near sunrise and winds will slacken before diurnal mixing and more gradient driven winds take over. As the main upper level trough ejects out into the Plains, increasing isentropic lift will allow scattered showers to develop across eastern kansas and gradually spread into western Missouri.