Aikyam-Lab/Synoptic-Bench huggingface dataset:
Surface analysis reveals broad high pressure over the deep south this afternoon. Broad anticyclonic flow around the high has resulted in light southwesterly to westerly winds for much of southern IN and central KY. With hardly a cloud in the sky, temperatures have warmed up nicely this afternoon as many areas are now in the lower 60s. Quiet weather will continue tonight and tomorrow as an amplified upper level ridge over the Plains slides toward us. The warmer air associated with the upper level ridge will result in afternoon highs about 6-9 degrees warmer for Monday. Surface winds will also take a more southerly turn as the deep south high pressure steadily moves toward the Carolina coastline.
while a surface cold front will be dropping southwestward into the CWA. Surface temperatures for Osceola and Clare Counties lower down to values close enough to support a low end risk for freezing rain late Monday night. - Freezing rain potential for northeast zones While daytime temperatures are forecast to reach into the low 40's for northeast zones.
A strong upper level trough currently over the southwest US will move into the Southern Plains Monday. At the surface, low pressure will deepen just to our northwest and put much of area in a modified warm sector by early afternoon.
1234 PM CDT Sun Mar 20 2022 Summary: Mostly sunny skies today with highs in the lower 50s.
327 PM EDT Sun Mar 20 2022 High pressure will prevail for the next few days. A storm system will then impact the area mid week before high pressure likely returns by the end of the week. High pressure will extend across the region tonight.
With sunny skies today, I kept forecast highs on the high side of guidance in the mid 60s for most of the Valley. JB Chattanooga Airport, TN 68 40 72 50 73 / 0 0 0 0 40 Knoxville McGhee Tyson Airport, TN 65 38 72 46 73 / 0 0 0 0 20 Oak Ridge, TN 65 38 71 47 73 / 0 0 0 0 30 Tri Cities Airport, TN 60 35 69 42 72 / 0 0 0 0 20.
138 PM EDT Sun Mar 20 2022 Pleasant sensible weather for the next few days as high pressure builds into the region filtering a cooler and drier airmass over the area.
1233 PM EDT Sun Mar 20 2022 High pressure will build across the Carolinas today with breezy winds and low humidity.
(Monday through Sunday) Diffluent upper flow will spread east on Monday as the developing southwestern states upper low ejects into the Plains.
Upper level ridging will take hold this afternoon and persist through the day on Monday. However, a stout upper trough will begin to make its way over the south-central Plains by late Monday afternoon. At the surface, high pressure will dominate over the region today but begin to shift eastward on Monday in response to a developing low pressure system over the south-central Plains (coincident with the upper trough).
A spring weather system will maintain the gusty winds and cooler temperatures through Monday with a few showers and possibly a thunderstorm scattered about through tonight.
97 A cold front will move through eastern Montana today with an upper trough following it tonight. Any precipitation that occurs will be in hit or miss rain showers with the best chance along the cold front. The front will also bring somewhat cooler temperatures and gusty NW winds today. The chance of showers will continue into tonight in the east with the upper trough moving through.
238 PM CDT Sun Mar 20 2022 Upper level ridge of high pressure currently just to the west of the region will shift east over the MS and Lower OH River Valleys later tonight and Monday. This, along with increasing southerly winds and abundant sunshine will push temperatures to unseasonably warm levels in the lower and mid 70s Monday afternoon.
354 PM CDT Sun Mar 20 2022 (Issued 354 PM CDT Sun Mar 20 2022) Tonight through Monday Night: High pressure will continue to drift across the Great Lakes Region this afternoon into Monday. A lake breeze has started to move inland this afternoon, which will keep temperatures cooler near the lake shore. Cloud cover will begin to increase overnight as a warm front begins to settle across central Wisconsin.
On the backside of an upper level trough, high pressure ridging begins to build in today, but a push of moisture thanks in part to a system in the Gulf of Alaska will bring another chance of precipitation to the forecast area today into Monday. The weather system that brought some showers along with the windy conditions yesterday had passed to the east and a ridge of high pressure is forecast to influence the regions weather today with mostly dry conditions. With the ridge in place a challenge could be with the extent and coverage of showers that may develop across the region tonight and Monday. With the passage of a cold front yday. high temps today are forecast to remain below normal and become a few degrees warmer tomorrow.
After a very spring-like today for this first day of spring, conditions are going to turn cooler and wetter during the workweek. A high amplitude trough is evident on mid-level water vapor imagery just west of the Four Corners area.
To start the period, an upper trough is passing overhead moving eastward. The majority of the precipitation with this trough and associated cold front has fallen already in Southwest Montana, with only minor accumulations expected the remainder of the afternoon. Relatively warm surface temperatures across the lower elevations of Southwest Montana has largely inhibited snow accumulation on roadways. Breezy to gusty winds are expected the remainder of the afternoon and evening across the region as high pressure fills in behind the front that moved through earlier today.
152 PM EDT Sun Mar 20 2022 High pressure to build across the area today this afternoon through early this week offering dry weather. Expect lows from the upper 30s east to the lower 40s west. Warm reading look to be around 15 degrees above normal with highs ranging from the upper 60s to the lower 70s.
145 PM PDT Sun Mar 20 2022 Low pressure will move away from the area tonight and over the next several days a strong ridge of high pressure will develop over the West Coast. In the wake of the low pressure system now moving into Arizona, winds aloft continue to bring strong and gusty conditions over the Sierra crest. The high wind warning will remain in effect over this area.
Currently the region is under the influence of a trough, and some light snow showers will result through tomorrow morning. Then tomorrow afternoon a ridge builds over the region, causing warmer than average conditions all week.
1203 PM CDT Sun Mar 20 2022 High pressure centered over the lower Mississippi Valley along with a an upper level ridge which is building east from the Great Plains will provide the region with a sunny and warm day today. The bias corrected MOS is several degrees warmer, which looks more reasonable given the strong insolation and low level warm advection today. This will produce warmer lows on Monday morning in the mid 40s to low 50s. The synoptic pattern remains unchanged with a long wave trough moving into the Great Plains Monday, and a closed low hanging off the southern end of the trough in west central Texas/southeast New Mexico. Deterministic guidance keeps the core of the low level jet and resultant deep moisture convergence back over the eastern Plains ahead of the trough during the daylight ours on Monday.
High pressure will bring back dry weather late tonight into Monday, with temperatures trending milder.
It's warm day out there with temps in the lower to middle 70s, RH down to 15 to 25 percent, with southerly winds gusts up to 35 mph.
1016 AM CDT Sun Mar 20 2022 (Issued 1016 AM CDT Sun Mar 20 2022) As high pressure continues to move overhead today, temperatures have begun to climb into the upper 40s to low 50s. High temperatures expected to top out in the mid 50s across east central Wisconsin and the low 60s across southwestern Wisconsin. Patterson (Issued 400 AM CDT Sun Mar 20 2022) Today through Monday: It's going to be a nice day across southern Wisconsin thanks to high pressure overhead and weak warm air advection. A lake breeze will develop midday, so it will be much cooler by the lake this afternoon. The warm front setting up across central WI will be the focus for light rain on Monday, which may clip the northern fringe of our forecast area from Montello to Fond du Lac to Sheboygan during the morning.
Gusty winds are also expected this afternoon, particularly over the high terrain with even strong winds expected on Monday. Dry and warmer conditions with lighter winds are expected for the second half of the week. Increased moisture advection out ahead of an approaching longwave trough over the Great Basin has resulted in scattered rain and snow showers developing across the region this afternoon. Shower activity continued to increase in coverage this afternoon as the bulk of the upper-level dynamics move into the region along the mean trough axis.
Models bring the upper trough across the CWA from 12Z to 00Z on Monday. The upward motion is a tad stronger on Monday but the best energy with the trough is well south of our CWA. A decent cold front is expected to push south from 08Z to 10Z early Monday morning. The temperatures on Monday are 7-14 C cooler than today's highs. The backside of the upper level trough approaches with northerly flow aloft.
155 PM EDT Sun Mar 20 2022 Very mild air will spread into the region today and persist Monday as an upper level ridge builds over the region.
242 PM EDT Sun Mar 20 2022 Today will be much cooler with rain showers, especially from the Twin Tiers north. High pressure will bring back dry weather tonight into Monday, with temperatures trending milder.
Clear-mostly clear skies will persist through this evening as a ridge of high pressures settles over southeast Michigan. Meanwhile, the thumb region will likely remain stuck in the low 40s (or even upper 30s), with temps in the 50s and 40s in between. High amplitude mid level ridging will then expand across the Great Lakes Mon night into Tues morning.
The cold front is now in eastern Idaho with a tight pressure gradient behind it that extends into south-central Idaho.
Discussion: In the upper levels, a ridge will move over the region tomorrow. At the surface, high pressure remains over the Southeast. Tomorrow will be mostly sunny and with a dry air mass in place allowing highs to climb into the lower 70s or near 70 in the afternoon in the Tennessee Valley.
Today's ridging aloft will continue to move east with a deep, split stream trof following right behind for tomorrow. The southern portion of this trof will likely become a closed low that will track accross the Southern Plains. This large system will bring a cold front through the area tomorrow along with some precip chances.
For the overnight, we'll be watching a cold front track from west to east across the area. This will bring breezy/gusty northwest winds and cooler temps for Monday. It appears we'll stay above freezing for the time being as clouds and wind should prevent temps from falling off too far.
353 PM EDT Sun Mar 20 2022 High pressure will the area dry through Monday night. As high pressure moves south of the area, light south winds will prevail. Surface ridging will persist across the area on Monday and get nudged eastward Monday night.
With sunny skies today, I kept forecast highs on the high side of guidance in the mid 60s for most of the Valley. McD Chattanooga Airport, TN 40 72 50 73 60 / 0 0 0 40 90 Knoxville McGhee Tyson Airport, TN 38 72 46 73 59 / 0 0 0 20 90 Oak Ridge, TN 38 71 47 73 58 / 0 0 0 30 90 Tri Cities Airport, TN 35 69 42 72 55 / 0 0 0 20 80.
111 PM EDT Sun Mar 20 2022 Low pressure will exit across the Maritimes through Monday.
250 PM MDT Sun Mar 20 2022 Split trof moving across Rockies and into high plains today. As trof axis slowly pushes east overnight the snow will lift across our far eastern zones. Trof will exit early tomorrow.
107 PM MDT Sun Mar 20 2022 Satellite trends show the northern stream of an overall trough across the eastern Idaho. Convergent flow from the surface cold front to 700mb should result in scattered to possibly numerous rain/snow showers. In wake of the trough axis, a dry northwest flow is expected Monday and Monday night. Northerly flow will prevail as a sharp ridge builds along the west coast.
Hourly temps across the east were also about 4 to 5 degrees warmer than anticipated.
Radar showing some light returns over the mountains, likely snowing on the peaks and ridge tops but at lower mountain elevations will need to moisten up the temp/dewpoint spread before it reaches the ground. Cold front arrival still forecast for Denver area around 2 am, bringing gusty north wind and cooler temperatures for daybreak. Models bring the upper trough across the CWA from 12Z to 00Z on Monday. The upward motion is a tad stronger on Monday but the best energy with the trough is well south of our CWA. A decent cold front is expected to push south from 08Z to 10Z early Monday morning. The temperatures on Monday are 7-14 C cooler than today's highs. The backside of the upper level trough approaches with northerly flow aloft.
Moisture will also begin to increase from southeast into eastern Oklahoma by tomorrow morning in advance of a potent upper level trough progged to bring widespread rainfall to the region tomorrow. Bowlan (Monday through Sunday) Diffluent upper flow will spread east on Monday as the developing southwestern states upper low ejects into the Plains.
1020 PM EDT Sun Mar 20 2022 High pressure for tonight and Monday. Cooler and showery by the weekend. The high pressure will remain in place for tonight and Monday.
710 PM EDT Sun Mar 20 2022 High pressure will the area dry through Monday night. As high pressure moves south of the area, light south winds will prevail. Surface ridging will persist across the area on Monday and get nudged eastward Monday night.
Cloudiness will mostly exit the area to the east through 03Z, leaving some mid level cloudiness on the ridge tops along the Continental Divide. To start the period, an upper trough is passing overhead moving eastward. The majority of the precipitation with this trough and associated cold front has fallen already in Southwest Montana, with only minor accumulations expected the remainder of the afternoon. Relatively warm surface temperatures across the lower elevations of Southwest Montana has largely inhibited snow accumulation on roadways. Breezy to gusty winds are expected the remainder of the afternoon and evening across the region as high pressure fills in behind the front that moved through earlier today.
741 PM EDT Sun Mar 20 2022 High pressure for tonight and Monday. Cooler and showery by the weekend. The high pressure will remain in place for tonight and Monday.
Cloud cover will also build back in from the southwest in advance of the warm frontal boundary as it approaches Deep East Texas by tomorrow.
919 PM EDT Sun Mar 20 2022 High pressure moves across the Mid-Atlantic early this week bringing continued dry weather along with warming temperatures. The upper trough slides off the coast this evening, with clouds dissipating and diminishing winds over the next few hrs. Then, mstly clr overnite as high pressure builds in from the W. Dry and very pleasant Monday as high pressure builds over the region. High pressure remains near the coast Monday night. Mostly clear with low temperatures in the lower to mid 40s.
845 PM EDT Sun Mar 20 2022 Frontal boundary has shifted south of the area, with high pressure to the north gradually veering northerly low level winds to the northeast overnight. At the sfc, N/NE winds around 5 to 10 mph will continue into tonight, with dry and cooler conditions expected across the area. Temperatures will fall into the 50s over much of the region, except upper 40s across northern Lake and inland Volusia counties, and in the low to mid 60s across Martin County.
Today's ridging aloft will continue to move east with a deep, split stream trof following right behind for tomorrow. The southern portion of this trof will likely become a closed low that will track across the Southern Plains. This large system will bring a cold front through the area tomorrow along with some precip chances.
709 PM EDT Sun Mar 20 2022 High pressure will prevail for the next few days. A storm system will then impact the area mid week before high pressure likely returns by the end of the week. High pressure will prevail with excellent radiational cooling conditions.
918 PM EDT Sun Mar 20 2022 High pressure will the area dry through Monday night. High pressure and a dry airmass will be in place across the region tonight. Surface ridging will persist across the area on Monday and get nudged eastward Monday night.
Today through Monday The exit of the trough and its associated cold front look well under way today with latest radar and satellite imagery seeing lingering showers around the eastern boarder. Once the front has fully exited late tonight, models expect a more calmer patter to settle in as high pressure and a ridge start to build over the region.
However, if the models continue to trend farther south and east with the Low, it may keep chances for much needed wetting rainfall out of most of the forecast area.
The cold front will move across the forecast area overnight allowing for cooler air to filter in. For the overnight, we'll be watching a cold front track from west to east across the area. This will bring breezy/gusty northwest winds and cooler temps for Monday. It appears we'll stay above freezing for the time being as clouds and wind should prevent temps from falling off too far.
Warmer temperatures are expected during the coming week, with daytime highs over 80 degrees across parts of the interior during mid-week. The ridge of high pressure over the E Pacific will amplify and shift E during the early to middle part of the coming week, with warmer temperatures expected.
Upper level ridge of high pressure currently just to the west of the region will shift east over the MS and Lower OH River Valleys later tonight and Monday. This, along with increasing southerly winds and abundant sunshine will push temperatures to unseasonably warm levels in the lower and mid 70s Monday afternoon.
/issued 138 PM EDT Sun Mar 20 2022/ Pleasant sensible weather for the next few days as high pressure builds into the region filtering a cooler and drier airmass over the area.
Chambers Split trof moving across Rockies and into high plains today. As trof axis slowly pushes east overnight the snow will lift across our far eastern zones. Trof will exit early tomorrow.
557 PM MDT Sun Mar 20 2022 Satellite trends show the northern stream of an overall trough across the eastern Idaho. Convergent flow from the surface cold front to 700mb should result in scattered to possibly numerous rain/snow showers. In wake of the trough axis, a dry northwest flow is expected Monday and Monday night. Northerly flow will prevail as a sharp ridge builds along the west coast.
Windy conditions will taper off through the evening and overnight hours as high pressure builds into the region. Light rain and snow showers will generate over the eastern Oregon and central Idaho mountains on Monday as a weak warm front crosses into the Pacific Northwest, though no significant impacts are expected.
1013 PM EDT Sun Mar 20 2022 High pressure will prevail for the next few days. A storm system will then impact the area mid week before high pressure likely returns by the end of the week. High pressure will prevail with excellent radiational cooling conditions.
530 PM MDT Sun Mar 20 2022 Water vapor shows upper ridge over the Plains with elongated trof moving into the Rockies. At the surface, cold front is moving into northeast WY early this afternoon, with warm/dry/breezy conditions ahead of the front. Cold front will move into far western SD early this evening, then sweep through the rest of the forecast area this evening and overnight.
With increasing cloud cover overnight, temperatures will not drop off that much, and have increased the lows by a few degrees. (Monday night through next Sunday) Monday night the strong low pressure system will push northeastward and drag a cold front out of the Panhandle into west Texas.
This low should continue to move east along with an attendant cold front into MN later this morning.
221 AM EDT Mon Mar 21 2022 High pressure moves across the Mid-Atlantic region early this week bringing dry weather along with warming temperatures. There is a weak backdoor boundary that tries to drop into the Lower MD Eastern Shore in the afternoon. Increasing clouds and milder Tues night as hi pres shifts farther E away from the coast lo pres and a warm front approach from the SW. primarily from W-E INVOF of the warm front.
102 AM EDT Mon Mar 21 2022 High pressure moves across the Mid-Atlantic early this week bringing continued dry weather along with warming temperatures. The upper trough slides off the coast this evening, with clouds dissipating and diminishing winds over the next few hrs. Then, mstly clr overnight as high pressure builds in from the W. Dry and very pleasant Monday as high pressure builds over the region. High pressure remains near the coast Monday night. Mostly clear with low temperatures in the lower to mid 40s.
255 AM EDT Mon Mar 21 2022 High pressure will be near the region for the early part of the week outside of a weak disturbance moving through tonight. A strong low pressure system will then track from the Midwest into the Great Lakes for the middle of the week leading to additional rounds of showers. High pressure across the region will lead to a mostly sunny day across the region.
324 AM EDT Mon Mar 21 2022 High pressure moves across the Mid-Atlantic region early this week bringing dry weather along with warming temperatures. There is a weak backdoor boundary that tries to drop into the Lower MD Eastern Shore in the afternoon. Increasing clouds and milder Tues night as hi pres shifts farther E away from the coast lo pres and a warm front approach from the SW. primarily from W-E INVOF of the warm front.
233 AM MDT Mon Mar 21 2022 08z surface analysis had low over eastern SD with cold front into northeast CO, almost through KICR. Water vapour loop showed upper trough from southern SK to AZ/NM. Main energy at bottom of trough. Evolution of upper trough still main weather maker this week. Today/tonight, -SN ends this morning as drier air pushes into the CWA and synoptic forcing associated with upper trough moves northeast.
257 AM CDT Mon Mar 21 2022 Upper ridge continues to build today, but will already be breaking down tonight. In addition to a deep closed upper low, this system also has a deep SFC/LL which will pass west/north of the mid-state Tues night/Wed. This system is so dynamic that the southern stream will either spin up another closed low or just deepen the ML/LL trough once again Thu/Thu night, and bring a secondary front across the area Thu afternoon. Our upper trough however not done just yet.
Winds have shifted to the northwest and have become breezy on the backside of the trough. To start the period, a west CONUS ridge will amplify as upper low pressure over the southern Plains gradually churns to the northeast.
Marginal low level wind shear will be possible at many sites around daybreak with low level wind shear becoming an increasing concern at most sites this evening as the low level jet increases to around 50 kts in most areas. A large incoming disturbance and warm front approaching from the south will kick off isolated to scattered showers and a few thunderstorms across LFK/TYR/GGG/TXK this afternoon with more widespread thunderstorms developing in these areas by early evening. Cloud cover will also build back in from the southwest in advance of the warm frontal boundary as it approaches Deep East Texas by tomorrow.
235 AM EDT Mon Mar 21 2022 High pressure will provide dry weather and warmer temperature before rain chances increase during the midweek period with approaching low pressure. Dry conditions, well above normal temperature, and plenty of sunshine can be expected today with high pressure in control.