Aikyam-Lab/Synoptic-Bench huggingface dataset:
High pressure will remain in control for the weather at the surface with upper ridging aloft for much of the period. High clouds will increase tonight, but dry conditions will persist in the lower atmosphere. On Monday, some low level moisture will work its way into the area on southerly flow on the back side of high pressure. Warm advection and some sunshine should still push readings into the lower and middle 60s though. However, rain showers will begin infiltrating the western portions of the area overnight Monday as a closed low enters the Missouri Valley.
149 AM EDT Sun Mar 21 2021 With a trough axis situated just north of the peninsula, cyclonic flow around the axis is allowing lower clouds to filter southward and NNE winds to persist. Cloudiness sticks around for much of the day before improving later this afternoon/evening for northern sites, while clouds are expected to begin clearing sooner for SWFL terminals as the trough moves away.
Expect winds to ease a bit during the daytime as the low moves over the west, but winds should pick back up overnight again. Upper ridge shifts eastward tonight away from the Panhandles as a closed upper low digs south and east across the Great Basin region by 00Z Monday. Increasing high level cloudiness can be expected tonight and Sunday in advance of this approaching upper low. Warmer and dry conditions will continue through Sunday.
1143 PM CDT Sat Mar 20 2021 A mid/upper ridge axis was situated across the Southern and Central Plains states today. Large-scale forcing for ascent will increase late Sunday night and into Monday as a negatively tilted mid/upper trough emerges from the Southern Rockies. The GFS/NAM remain slightly faster moving the mid/upper trough trough the area when compared to the ECMWF/Canadian, but most of the precipitation should move out of the area on Tue as large-scale forcing for subsidence arrives in the wake of the system.
Temperatures across the region were showing the typical ridge/valley splits along with good radiational cooling in the rural areas. Temperatures varied from the upper 20s/low 30s in the rural/valley locations to the the mid-upper 40s on the ridges. We'll have a light southerly flow overnight which should keep minimums slightly warmer than this morning. Overall, another ridge/valley split seems likely with lower 30s in the valleys to the upper 30s to the lower 40s on the ridges. Dry and mild weather will continue into Monday as high pressure off the coast of New England continues to exhibit its influence over the lower Ohio Valley.
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. However, the upper-level pattern will begin to change as a strong 500-mb trough digs southeastward across the Four Corners region. Clouds will be on the increase Monday evening as a 120-kt 300-mb jet streak noses across the Deep South and helps the 500-mb trough lift and pivot into the Missouri Ozarks.
650 AM CDT Sun Mar 21 2021 (This evening through Sunday) Morning water vapor imagery shows the upper level ridge axis moving off to the east of the region in response to a deepening low pressure system over the Rockies.
407 AM CDT Sun Mar 21 2021 We'll see a cold front track across the forecast area from northwest to southeast. Cooler high temperatures in the upper 50s are expected across our northwestern zones where the front will pass through earlier in the day. Any precipitation should hold off until tonight on the back side of the cold front. A closed upper low will tap into gulf moisture and bring widespread steady rainfall to our area as the low passes just to our southeast.
Widespread precipitation is highly probable, with the highest QPF for the entire event (1-2 inches) forecast in central KS.
651 AM CDT Sun Mar 21 2021 Summary: A cold front will move through the Northland this afternoon into Monday morning, bringing some light rain and possibly some mixed precipitation to the region.
430 AM CDT Sun Mar 21 2021 Summary: A cold front will move through the Northland this afternoon into Monday morning, bringing some light rain and possibly some mixed precipitation to the region.
606 AM EDT Sun Mar 21 2021 High pressure remains in control into the new work week. The probability for unsettled weather increases by midweek, as upper troughing sets up to the west. A high pressure system will provide dry weather today and tonight, with lots of sunshine today.
651 AM EDT Sun Mar 21 2021 High pressure east of the region will set up as a ridge along the Appalachians, keeping a dry east-southeast flow over the region through Monday night.
/issued 307 AM CDT Sun Mar 21 2021/ We are looking at the last cool night in the lower 40s interior southeast Texas and central Louisiana to the mid to upper 40s from I-10 south to the coast. A few clouds were still lingering around to remind me that yesterday was alot cooler than forecast. low pressure troughs were still covering much of the east and western US and in the south central US a ridge was over the eastern half of Texas. and yes it will be definitely warmer today with less cloud cover. We will continue to see the upper level ridge slide over the area this afternoon and then will be east of us tonight.
233 AM PDT Sun Mar 21 2021 High pressures builds in today with light winds and sunny skies.
607 AM EDT Sun Mar 21 2021 High pressure centered near the New England Coast will extend a ridge of high pressure west over the local area through Monday. A warm front will lift north across the area Monday.
A moist upslope flow arrives tonight as the next trough moves into the Pacific Northwest. As the previous discussion mentioned, a backdoor cold front remains possible for Monday night in northwest Montana and along the Divide.
Benign weather is in store for today and most of Monday as the upper trough moves east out of the area and weak zonal flow replaces it.
High pressure is promoting tranquil and clear conditions this morning across the Tennessee Valley region. Have trended 2-3 degrees above guidance, with highs in the low to mid 60s expected in most locations. After another clear and dry night, we'll have one more nice weather day on Monday as the center of the high pressure system shifts further to the east, resulting in a prevailing southerly flow.
602 AM EDT Sun Mar 21 2021 A high pressure area will bring another day with sunny skies and mild temperatures. Winds will increase as the high pressure area moves farther away from the area.
Cooler temperatures will settle into the region on Sunday, with less wind.
307 AM MST Sun Mar 21 2021 A series of weather disturbances will affect the region this week bringing frequently breezy conditions and cooler temperatures. Temperatures through much of the week will remain around normal as afternoon highs across the lower deserts top out in the mid to upper 70s each day.
1030 AM EDT Sun Mar 21 2021 High pressure will remain in control over the region through mid week. Several waves of low pressure are expected to track to our west during the middle to latter portions of the week, potentially bringing a return to more active weather, particularly with the storm system towards the end of the week. Have hedged toward the warmer end of guidance given antecedent dry conditions and the pre-greenup state of the vegetation, which should both lead to very efficient sensible heating with sunny skies in place. Warmer today with highs in the 60s and cool again tonight with lows around 30. Much warmer at night due to low clouds and higher moisture content.
653 AM EDT Sun Mar 21 2021 High pressure will build off the Northeast Coast by later today, while low pressure drifts along a coastal front offshore the southeastern US coast.
728 AM EDT Sun Mar 21 2021 High pressure over the area today will gradually retreat offshore through the first half of the week. As the high builds offshore this afternoon, light NE winds will become onshore from the SE.
Meanwhile, the upper level trof axis will continue to sink into southern Utah by Monday morning. As a result, wind speeds will be light mainly east of the Laramie Range but may become a bit breezy west of the Laramie Range as another upper level trof approaches the area from the northern Rockies. Pattern remains fairly progressive through the week as a series of mid-level troughs push through the region, keeping temperatures below seasonal averages.
921 AM CDT Sun Mar 21 2021 Beautiful weather abounds across the TN Valley this morning on this second day of Spring, with current temperatures ranging form the middle/upper 40s to the lower 50s at this hour. The only feature of note on visible satellite imagery this morning is a scattered/broken deck of low clouds advecting Wwrd across the area from a departing area of low pressure centered off the Space Coast of FL. As a result, locations in NE AL will likely only see the lower 60s this aftn, which is only a few degrees below normal temps for this time of year (middle 60s). After another clear and dry night, we'll have one more nice weather day on Monday as the center of the high pressure system shifts further to the east, resulting in a prevailing southerly flow.
1010 AM EDT Sun Mar 21 2021 Updated current conditions, but the forecast is on track for a dry, warmer than average day. High pressure will remain in control for the weather at the surface with upper ridging aloft for much of the period. High clouds will increase tonight, but dry conditions will persist in the lower atmosphere. On Monday, some low level moisture will work its way into the area on southerly flow on the back side of high pressure. Warm advection and some sunshine should still push readings into the lower and middle 60s though. However, rain showers will begin infiltrating the western portions of the area overnight Monday as a closed low enters the Missouri Valley.
A low pressure system may impact the area by the end of the week, with a chance of mountain showers. An upper level trough is tracking across central California and dry weather is returning after a shot of some beneficial rain and snow to end last week.
600 AM EDT Sun Mar 21 2021 Strong area of high pressure has drifted east now centering itself over the east coast but is still very much in control of the weather over southeast MI. * None Deep layer stability held firm within a steadily increasing upper height field and general low level ridging ensures another day of benign weather conditions today. The resident above average thermal profile trending warmer thanks to the underlying increase in mean thicknesses and advent of modest warm air advection in low level south flow. Similar environmental conditions in place Monday, although increasing depth to the south-southwest flow as the upper ridge axis eases eastward allows for an uptick in the advective process.
343 AM MDT Sun Mar 21 2021 Overview: A broad/complex upper level trough over the Intermountain West will slowly shift eastward into the Rockies (Tonight) and central/southern Plains (Mon-Mon night). rounding the base of the broader upper trough. With increasing mid-upper level cloud cover and 'reinforced' northerly flow over the region, expect temperatures cooler than yesterday. ranging from the upper 40s in northeast Colorado to the lower-mid 60s in the far southeast (e. Tonight-Monday night: The aforementioned upper wave and associated surface cyclone in the lee of the southern Rockies will amplify/deepen and track eastward into the Texas Panhandle tonight. Guidance is in general agreement that further amplification/deepening of the upper wave/surface cyclone will occur over the Southern Plains on Monday -- with the ensuing mature /vertically stacked/ cyclone lifting NE-NNE from OK into eastern KS Monday night.
440 AM MDT Sun Mar 21 2021 Per previous discussions, the mid-level Pacific trough shifted eastward over the Great Basin during the night, driving its associated cold front to southwest Colorado during the early morning hours. The trough shifts little during the day as energy on the western flanks of the trough digs southward during the day. However, as the system begins to split early this morning, the cold front will shift south of the southwest Colorado border by sunrise. The northern portion of the trough shifts over the northern Rockies by days end while the strong positive tilt southern branch moves over the Desert Southwest. Expect showery conditions to continue tonight into Monday morning as the trough finally pushes eastward over the area.
A mid/upper level ridge of high pressure will continue to build east into the region today, bringing a really nice end to the first weekend of Spring. Monday will be another nice day as the high shifts farther east.
325 AM MDT Sun Mar 21 2021 Overview: A broad/complex upper level trough over the Intermountain West will slowly shift eastward into the Rockies (Tonight) and central/southern Plains (Mon-Mon night). rounding the base of the broader upper trough. With increasing mid-upper level cloud cover and 'reinforced' northerly flow over the region, expect temperatures cooler than yesterday. ranging from the upper 40s in northeast Colorado to the lower-mid 60s in the far southeast (e. Tonight-Monday night: The aforementioned upper wave and associated surface cyclone in the lee of the southern Rockies will amplify/deepen and track eastward into the Texas Panhandle tonight. Guidance is in general agreement that further amplification/deepening of the upper wave/surface cyclone will occur over the Southern Plains on Monday -- with the ensuing mature /vertically stacked/ cyclone lifting NE-NNE from OK into eastern KS Monday night.
We'll see a cold front track across the forecast area from northwest to southeast. Cooler high temperatures in the upper 50s are expected across our northwestern zones where the front will pass through earlier in the day. Any precipitation should hold off until tonight on the back side of the cold front. A closed upper low will tap into gulf moisture and bring widespread steady rainfall to our area as the low passes just to our southeast.
531 AM MDT Sun Mar 21 2021 Per previous discussions, the mid-level Pacific trough shifted eastward over the Great Basin during the night, driving its associated cold front to southwest Colorado during the early morning hours. The trough shifts little during the day as energy on the western flanks of the trough digs southward during the day. However, as the system begins to split early this morning, the cold front will shift south of the southwest Colorado border by sunrise. The northern portion of the trough shifts over the northern Rockies by days end while the strong positive tilt southern branch moves over the Desert Southwest. Expect showery conditions to continue tonight into Monday morning as the trough finally pushes eastward over the area.
A sharp upper level ridge along with low level southerly flow will keep the quiet and mild weather in tact for today. Highs look to be a few degrees warmer than yesterday with readings in the middle 60s area-wide.
612 AM CDT Sun Mar 21 2021 A warm and breezy Sunday is in store, with the region caught in a tight pressure gradient between an approaching cold front to our west and high pressure anchored over the northeast. Rain chances return to the forecast tonight, as a weakening cold front pushes into the area. Given this, will keep PoPs on the low side for now before higher rain chances come late Monday.
1051 AM EDT Sun Mar 21 2021 High pressure over the area today will gradually retreat offshore through the first half of the week. As the high builds offshore, light NE winds become more onshore from the SE.
349 AM MDT Sun Mar 21 2021 High pressure will lead to dry and mild conditions across NE Montana for today. The next dry cold front will push through on Monday with precipitation chances mainly remaining south and west of the CWA.
951 AM EDT Sun Mar 21 2021 High pressure east of the region will set up as a ridge along the Appalachians, keeping a dry east-southeast flow over the region through Monday night.
443 AM CDT Sun Mar 21 2021 Warmer this morning with temperatures in the mid 40s as of 4 AM with breezy southerly winds.
534 AM MDT Sun Mar 21 2021 Surface analysis shows the cold front has pushed to the southeast of PHP-IEN and should be completely out of the forecast area shortly after sunrise. High temperatures will be cooler than yesterday, though still near, or slightly warmer than, the average for this time of year. A NE-SW oriented band of -snra has developed in the area of enhanced lift ahead of the upper trough. Mean central CONUS troughing will prevail through most of the week with the main storm track remaining well to the south of the forecast area.
301 AM PDT Sun Mar 21 2021 A weak trough will move over Southern California today, maintaining dry and cool weather. It will be sunny and slightly warmer on Monday as winds attempt a turn offshore behind the trough.
(This evening through Sunday) Morning water vapor imagery shows the upper level ridge axis moving off to the east of the region in response to a deepening low pressure system over the Rockies.
700 AM CDT Sun Mar 21 2021 Warmer this morning with temperatures in the mid 40s as of 4 AM with breezy southerly winds.
Skies are sunny and temperatures have warmed into the low to mid 60s. In the upper levels, a ridge will continue to propagate east across the area tonight and tomorrow. Lows Monday morning will be milder in the upper 30s to mid 40s, but another ridge-valley split seems likely with sheltered low-lying areas falling into the mid 30s.
Light rain continues working eastward this afternoon in advance of a cold frontal passage. The wind shift line early this afternoon is just east of the Red River, with the lower dew points still back in central North Dakota. Temperatures following the front will actually rebound a bit higher thanks to clearing skies; however, humidity will fall in response to the lower dew points. Clustered ensemble means are still consistent run to run in depicting a picture of an upper low south to southeast of our forecast area tracking to the northeast. Conditions then improve to VFR heading into the late afternoon and early evening, with a wind shift to the north to northwest following a weak cold front.
Gusts in the 20 to 35 mph range should remain common through the afternoon over the CWA which will aid in warmer afternoon temps in the mid 60s to lower 70s. especially along and west of Highway 75 where the lower humidity values and stronger wind gusts are forecast.
Should experience similar conditions tomorrow, although highs will probably be a few degrees warmer across the area.
Updated current conditions, but the forecast is on track for a dry, warmer than average day. High pressure will remain in control for the weather at the surface with upper ridging aloft for much of the period. High clouds will increase tonight, but dry conditions will persist in the lower atmosphere. On Monday, some low level moisture will work its way into the area on southerly flow on the back side of high pressure. Warm advection and some sunshine should still push readings into the lower and middle 60s though. However, rain showers will begin infiltrating the western portions of the area overnight Monday as a closed low enters the Missouri Valley.
Upper air analysis showed a large positive tilted trough extending from the northern Plains into the Great Basin. The northern part of this trough was shearing off to the east while the southern part was digging southeast with a closed low developing over Utah. Elsewhere, a cold front had moved into southwest Kansas and currently extends from just west of a Hays to Liberal line. The upper low over Utah will track from Utah across northern New Mexico tonight and Monday.
High pressure continues to dominate the weather across Middle Tennessee at the surface and aloft.
309 PM EDT Sun Mar 21 2021 Short Term (Today through Monday): A pair of low pressure areas are influencing the pattern across South Florida with the frontal boundary that passed through the region a few days ago sitting to the south of the peninsula along with an associated area of low pressure over the northern Bahamas. A second area of low pressure over northern Florida has kept portions of the region including Southwest Florida cooler thanks to additional cloud cover this morning. As the afternoon continues, this area of low pressure will continue to slide into the Atlantic and move away from the region. Aloft, a mid-level trough will keep slide north and eastward slowly helping to keep the low progressing away from Florida.
Overnight lows will fall into the lower 40s across the eastern Ozarks to near 50 across southeast Kansas.
150 PM EDT Sun Mar 21 2021 Have updated the forecast to increase pops in far east central sections for the next few hours as showers circulate around the off shore low pressure area. Monday looks to be quite pleasant with mostly clear skies as regime is dominated by upper ridge and lingering hybrid wedge. Max temps today could be a bit more limited in the southeast given aforementioned low and precip, otherwise expect Monday morning lows in the low to mid 40s for most areas and moderating warmer Monday afternoon generally in the upper 60s to low 70s.
1239 PM CDT Sun Mar 21 2021 (This evening through Sunday) Morning water vapor imagery shows the upper level ridge axis moving off to the east of the region in response to a deepening low pressure system over the Rockies.
1202 PM MDT Sun Mar 21 2021 Per previous discussions, the mid-level Pacific trough shifted eastward over the Great Basin during the night, driving its associated cold front to southwest Colorado during the early morning hours. The trough shifts little during the day as energy on the western flanks of the trough digs southward during the day. However, as the system begins to split early this morning, the cold front will shift south of the southwest Colorado border by sunrise. The northern portion of the trough shifts over the northern Rockies by days end while the strong positive tilt southern branch moves over the Desert Southwest. Expect showery conditions to continue tonight into Monday morning as the trough finally pushes eastward over the area.
215 PM MDT Sun Mar 21 2021 Light to moderate rain and snow showers continue this afternoon, mostly along the higher elevations of western Colorado. Even with this snow, impacts to travel have been limited given the high March sun angle with webcams showing mostly wet roads. This is all due to the progression of the mid-level Pacific trough eastward across the region. Light shower activity will continue over at least the west-central Colorado mountains into Monday afternoon as the area remains on the backside of the Pacific trough and under the influence of residual moisture and mild instability.
1257 PM CDT Sun Mar 21 2021 Warmer this morning with temperatures in the mid 40s as of 4 AM with breezy southerly winds.
There should be a slow decrease this afternoon ahead of the cold front as the ribbon of very strong winds aloft moves east and decreases.
202 PM MDT Sun Mar 21 2021 Clouds will begin to increase tonight ahead of cold front that will move through the area on Monday.
150 PM EDT Sun Mar 21 2021 High pressure over the area this afternoon will gradually retreat offshore through the first half of the week. As the high builds offshore, light NE winds become more onshore from the SE.
320 PM EDT Sun Mar 21 2021 The upper trough over the southeast coastal states will gradually push eastward off shore overnight. the upper ridge builds over the southeast and a dry and warming trend should dominate the remainder of the short term.
Cooler temperatures will settle into the region today, with less wind.
1241 PM CDT Sun Mar 21 2021 Summary: A cold front will move through the Northland this afternoon into Monday morning, bringing some light rain and possibly some mixed precipitation to the region.
1010 AM CDT Sun Mar 21 2021 Summary: A cold front will move through the Northland this afternoon into Monday morning, bringing some light rain and possibly some mixed precipitation to the region.