Aikyam-Lab/Synoptic-Bench huggingface dataset:
20 High pressure will build across the area behind a cold front currently moving southeast across middle Georgia this afternoon. A few showers are possible late Monday night, mainly across north GA along/ahead of an initial warm front. Temperatures will be quite a bit cooler tonight given the much drier air, closer to but still just above normal for late March. Models are in good consensus with timing and intensity of the overall features so confidence is increasing on the storm threat for portions of central GA, though given the strong dynamics the warm front could easily end up tracking somewhat farther north than fcst so will need to keep in mind. Thinking main threats with any severe development will be damaging winds, hail (supportive of rather low freezing level and decent mid level lapse rates), and isolated tornado or two.
A deeper influx of Gulf moisture will take place late Monday night into Tuesday morning as the upper-trough swings across the Mid-South and into the Tennessee Valley. With the warm front (and any instability remaining south of the I-20 corridor), the latest model guidance keeps thunder chances just out of the area. Showers will begin to taper off late Tuesday afternoon into Tuesday evening as the trough shifts into the Central/Southern Appalachians and a drier air mass filters in behind the cold front.
Evening Update High pressure continues to build into the region this evening along with a stream of high clouds. Cloud cover will gradually increase overnight into early Monday as high pressure quickly slides eastward. Expect lows to drop only into the low to mid 50s areawide. The main story will be heavy rainfall as the low tracks right over our area. Severe weather is not anticipated as the warm front will remain well to our south.
With weak ridging overhead moving in today before the Plains trough, conditions will again be dry at the surface with highs in the upper 60s to low 70s and dewpoints mainly in the 30s. Recent rains should have the surface still pretty moist, but any stronger northwest winds may dry out the low levels a bit more. Plains trough will move east towards the mid state tonight, and precip chances will increase from the southwest after midnight. Left out thunder mention as most of the warmer air and instability stays south due to the track of the low being just to our south as well.
Winds will increase by Monday afternoon ahead of an approaching cold front, especially in southeast Oregon where it will be windy. Temperatures on Monday are expected to be around 5 degrees cooler than normal.
A stacked cyclone will drift across NY and New England over the next two days, keeping cloudy skies and cool, showery weather over NY and PA. During the day on Monday, the storm will slide through NY and pull cooler air between 900 mb and 700 mb over Lake Ontario. West-northwest flow will pull cooler air into our region Monday night. while the upper low builds across the northeast. A upper level low pressure system will be departing. However, an inverted trough feature moves in from the southwest.
Precipitation activity tapers off for most areas this evening as the trough shifts to the east.
There will be a rather sharp gradient of instability associated with the warm front and well as low level shear. BDL Low pressure should be moving offshore the GA/SC coast at the beginning of the period.
249 AM MDT Mon Mar 30 2020 One more warm day is expected for NE Montana as upper ridge moves to the east and flow aloft turns to the SW. Most areas will have highs in the lower 60s while some area near the Canadian border where snow cover persists will be in the 50s. Cold front moves through eastern Montana late tonight and Tuesday morning with a chance of rain. Upper low moves into Alberta on Tuesday and remains there the remainder of the week.
A stacked cyclone will drift across NY and New England over the next two days, keeping cloudy skies and cool, showery weather over NY and PA. During the day on Monday, the storm will slide through NY and pull cooler air between 900 mb and 700 mb over Lake Ontario. West-northwest flow will pull cooler air into our region Monday night. As the surface storm drifts out to sea Tuesday, a second cyclone will rotate into the Southeastern U. while the upper low builds across the northeast. We will be under the influence of an upper level low through the period.
As the low moves towards the southeastern U. As the low moves further towards the southeastern U.
An upper level trough will move into the central Plains today and into and across the area tonight into Tuesday. Highs will warm into the upper 60s to around the 70 degree mark this afternoon ahead of the approaching trough. Southerly flow aloft will develop ahead of the trough which will help to pull moisture north into the region. This evening as lift increases with the approaching trough and moisture increases some, showers will start to develop and spread across the area from the southwest to northeast. A slightly cooler air mass will move into the region behind the system as highs on Tuesday warm into the upper 50s to the lower 60s. Lows Tuesday night will range from the middle 30s across central Missouri to the lower 40s across southeastern Kansas.
A few widely scattered showers cannot be ruled out Tuesday and Tuesday night, then drier and warmer weather will return later in the week.
Cold advection, and increasing NW flow, will increase cloud cover, provide the risk for a passing showers and keep temperatures much cooler today.
The upper level low will fully push out of the region this morning as the we dry out with clearer skies pushing into our west. However with the slow movement of the upper level low, low level moisture around 850 mb will stick around for much of the day keeping much of the eastern half of the area cloudy throughout the day. This will impact temperatures across the region with highs expected in the low 50s to the west and mid to upper 40s to the east.
Previous Wind gusts will diminish this evening through the overnight hours as the strong low pressure system continues to work its way though the Great Lakes and pushes eastward. Overnight low temperatures are expected to get down to the low and mid 40s.
/Tonight through Monday Night/ Confidence: High Powerful spring storm continues to churn clouds, winds and light precip over Wisconsin this afternoon with a secondary trough scraping the northeast areas of the state; resulting in stratus as well as enhanced gradient winds. Fortunately the low will continue to slowly drift east today with resultant mixing and winds dropping off through sunset. Monday looks like a fine day, as models continue to show the ridge axis moving to dead center Iowa by 18z. As the high moves little Monday night, a developing trough of low pressure will swing east southeast with some mid to high level clouds over the west and south into Tuesday morning. Lows Monday night will be milder; only falling to the lower 30s north and in the lower 40s south.
Initial lift and moisture return will be focused across the high Plains this morning ahead of the approaching upper trof moving into the central/southern Rockies.
It's a sunny, windy afternoon in the wake of last night's cold front. Low pressure is now centered over the Great Lakes with high pressure over Oklahoma. Ridging aloft and at the sfc will build into the region for Monday. Monday looks very pleasant with sunshine and highs in the low to mid 60s. Any severe threat will be relegated to the Gulf Coast, south of the low.
314 AM EDT Mon Mar 30 2020 The area will remain under the influence of large upper level low pressure system as it slowly fills and shifts east during the course of the day. Scattered rain showers will continue to dot the area as unsettled, cyclonic flow persist around the base of this upper low. With the showers and generally cloudy conditions, temperatures will remain on the cool side as well with highs only reaching the lower to mid 40s this afternoon.
Areas of showers associated with the upper low and mid-level deformation/trowal will continue to gradually slide east into the evening and diminish as the low passes east with clearing spreading eastward as high pressure approaches. A much nicer Monday is in store with lighter winds and more sunshine thanks to a ridge of high pressure across the area. Dry weather will continue on Tuesday with perhaps slightly cooler temps due to cool northeasterly low-level flow from high pressure centered off to the northeast. For mid to late this week, broad longwave troughing will become established across the western into the central US.
Tonight a upper level trough with move through the southern Plains into the Ozarks.
An upper trough will move east into the Central Plains this afternoon bringing a pacific cold front that will affect mainly wind direction and speed, though not much with temperatures due to a severely modified air mass crossing the Rockies from the West Coast.
The system will quickly move east and cross the Lower Mississippi Valley by early Tuesday. This will swing another cold front through the region with scattered to numerous showers and some thunderstorms possible. Cape looks limited at this time, however shear looks sufficient to produce an organized storm or two tonight, but mainly well inland and closest to the area of low pressure.
The upper ridge will continue to flatten today, with deep layer flow becoming increasingly zonal. Overnight, low clouds and possibly some fog will spread inland from the coast as a more moisture rich airmass lifts over the developing warm front. Expect lows to range from near 70 at the coast, to the low 60s in south Georgia.
244 AM CDT Mon Mar 30 2020 Under s/w ridging aloft, it should be mild and mainly dry for the day across the region. However, a weak pv anomaly is expected to push through the ridge late this afternoon and into tonight. A few showers may linger into Tuesday morning, but most of the day Tuesday should be dry and mild out ahead of an advancing cold front.
The stacked ridging will keep warm and stable conditions in place today and into Tuesday, with temperatures running well above normal again today, then dropping a few degrees by Tuesday afternoon as the subsidence weakens.
303 AM EDT Mon Mar 30 2020 Brisk west winds will continue today as a deep low pressure area drifts towards New England and slowly weakens. It will be somewhat cool today and Tuesday, and then warm towards the end of the week before another cold front and rain arrives over the weekend. Some areas across the southwest may see some clearing during the first part of the night tonight, which could for enough radiational cooling for temperatures to fall below freezing. Otherwise, lows will be in the low to mid 30s. High pressure will move into the area on Tuesday as a southern stream low crosses into the southern Appalachians.
LW Chattanooga Airport, TN 72 50 55 43 58 / 0 70 100 30 0 Knoxville McGhee Tyson Airport, TN 69 50 53 42 55 / 0 30 100 60 10 Oak Ridge, TN 69 49 53 42 55 / 0 20 100 50 10 Tri Cities Airport, TN 67 44 52 41 52 / 0 0 90 80 20.
951 PM MDT Sun Mar 29 2020 An upper level trough will exit to our east by early Monday morning.
indicate that an upper trough will move across southern Colorado into Monday, bringing unsettled conditions to the CWA. Elsewhere, the highest potential for accumulating generally light precipitation during the short-term should be realized over eastern locations Monday. Breezy westerly winds will spread down into the lower eastern slopes and into portions of the I-25 corridor during the afternoon with some spotty critical fire weather conditions possible. Energy rotating around the closed low in southwest Canada will move through the northern U. Lee troughing Tuesday night will keep low temperatures mild across the lower eastern slopes and adjacent plains.
It has an associated surface cold front that will also keep things windy to breezy, even at night, under southerly to southwesterly flow. It appears as if there is enough warming in a deep layer to prevent any freezing precipitation, but do look for the afternoon rain to change back to snow for many locations, and at some elevations, mainly above 7000ft, for an all-snow event. On Wed, weak but large low pressure continues in the Great Basin, leaving a threat of light precipitation, mostly snow, as temperatures in the Snake River plain will likely warm only to around the 40 degree F mark on Wed afternoon.
256 AM EDT Mon Mar 30 2020 Synopsis/Discussion/Marine Low pressure will be pulling away and showers will be ending today.
A cold front ran from upper Michigan across southern Minnesota and into the Dakotas. Quiet and dry conditions will be seen across the area as high pressure moves through the Midwest.
1052 PM CDT Sun Mar 29 2020 (This afternoon through Monday) Slight changes to temperatures and dewpoints today and tonight, a few degrees cooler most locations.
A strong upper level low pressure system will be digging into the Pacific Northwest during the day. To the southeast of this system, mid level westerly flow will induce lee side troughing once again with winds increasing from the south across the area during the afternoon across the central High Plains.
and Tuesday A ridge of high pressure will build into the western Great Lakes region today, bringing a gradual decrease in clouds from west to east. High temperatures will range from around 40 degrees far northeast WI, to the lower 50s over parts of central WI.
The potent mid-latitude cyclone that brought very strong winds to the area and severe weather to the central portions of the CONUS yesterday as continued it track to the northeast and currently centered over the Great Lakes region. Another low amplitude trough is amplifying over the southwestern United States. High pressure and a downslope flow regime is in place more near the surface across the forecast area in between the two main weather systems. Slightly lower temperatures across northern areas are slower to return to the south as the area is in overall transition of high pressure regimes and situated in somewhat of a "col" zone. Due to higher theta-e airmass still to the south of the area and a mostly neutral tilt to the overall upper trough, expect low overall precipitation amounts out of this.
Mostly clear skies are expected overnight as the upper ridge crosses the area. On Monday, the southern stream upper trough will move eastward over the central plains. A relatively warm and moist airmass will move northward ahead of this trough, bringing a chance of showers, mainly during the late afternoon hours. There may be a little snow on Tuesday night, especially over the higher elevations. The upper low will remain nearly stationary over southwestern Canada, spinning a series of upper troughs and surface cold fronts into the northern plains.
455 AM EDT Mon Mar 30 2020 Surface ridging building in from the west, along with relatively flat flow aloft, will result in fair weather today.
128 AM EDT Mon Mar 30 2020 Aviation - Wind will decrease tonight - Warming trend through the week -- Wind will decrease tonight -- A deep upper low over eastern Wisconsin will move northeast across Ontario tonight.
338 AM CDT Mon Mar 30 2020 Today through Tuesday High pressure across the region early this morning with clear skies and light winds. An upper trough moving into the Rockies will continue to advance eastward today, and we should see increasing high level clouds today, with a persistent southeasterly wind. There could be lingering showers in northeast NE early Tuesday morning, but the bulk of Tuesday will be dry with increasing sunshine, and another day with temperatures in the lower 60s.
322 AM EDT Mon Mar 30 2020 As the primary low pressure system moves east today, an upper level low pressure center will move into New England.
Cannot rule out some elevated convection as the main upper trof moves thru the region tngt into Tue, with svr weather potential limited.
1230 AM CDT Mon Mar 30 2020 947 PM CDT There will be some light showers on the back side of the departing upper low due to continued cyclonic flow. Otherwise were are still somewhat mixed in the low levels and have 3 mb/3 hr pressure rises, thus breezy conditions with gusts to 35 mph this evening will slowly taper this evening and overnight. As an approaching ridge builds into the area from the west, winds will shift NE/E off Lake Michigan late in the afternoon into Monday night.
255 AM CDT Mon Mar 30 2020 High pressure will move across the region today.
High pressure will be in place over the majority of the region tonight, keeping conditions dry under mostly clear skies. The high gets pushed east on Monday as low pressure approaches from the west. May see a few light rain showers late Monday afternoon and Monday night ahead of the low, but with little in the way of upper support, do not expect the precipitation to be widespread, with little in the way of rainfall accumulations. Model trends still point towards cooler conditions towards the end of the upcoming week.
Cold advection, and increasing NW flow, will increase cloud cover, provide the risk for showers, and keep temperatures much cooler today. Locations north of PIT have the highest probability of experiencing rainfall.
Temperatures are expected to reach well into the 50s to around 60 degrees on Monday, before a brief period of cooler weather on Tuesday. High pressure will build into the Midwest on Monday, leading to plenty of sunshine and light winds with highs in the upper 50s and lower 60s. Upper ridging will build into the region behind the departing wave for the middle of the week.
Tonight moisture will be increasing as a mid/upper level trough over the plains moves east.
1124 PM MDT Sun Mar 29 2020 A quiet and calm night across the High Plains and adjacent Mountain Terrain this evening. Increasing clouds overhead are the early signal that an incoming upper level low is approaching the region. This low doesn't garner much strength nor instability, but there will be just enough to spur an isolated thunderstorm or two across the HIgh Plains tomorrow afternoon, mainly across the western Nebraska Panhandle; also signaled by the Storm Prediction Center's forecast. Afternoon GOES-R satellite composite showed a upper ridge axis from the MT/ND border south over the eastern WY/CO plains. Mid and upper level moisture was spreading from the Great Basin across UT, CO and WY ahead of the a Pacific trough. Clouds will continue to increase this afternoon and evening as the trough pushes east across the Four Corners.
124 AM EDT Mon Mar 30 2020 Dry high pressure will build over the area today with continued above normal temperatures. A low pressure system will cross the area Tuesday and will bring widespread showers and a chance of thunderstorms.
618 AM EDT Mon Mar 30 2020 Cool cyclonic flow and a tightened pressure gradient remain in place today as the expansive low pressure system over southern Ontario slowly weakens and drifts east with time. MVFR stratus will be prevalent today as low-level moisture continues to wrap around the low, with a few showers or sprinkles throughout the day. The area will remain under the influence of large upper level low pressure system as it slowly fills and shifts east during the course of the day. Scattered rain showers will continue to dot the area as unsettled, cyclonic flow persist around the base of this upper low. With the showers and generally cloudy conditions, temperatures will remain on the cool side as well with highs only reaching the lower to mid 40s this afternoon.
satellite imagery reveals the upper level trough centered near the Four Corners area. Temperatures are mild with lower to mid 40s for most of the lower elevations. the upper level trough over the Four Corners region is forecast to transit east through this afternoon into Eastern Colorado. Rain is expected over the lower elevations, mainly along and west of I-25, and across the Palmer Divide. Any showers that reach the lower elevations will be light, if any precipitation reaches the surface. the upper trough will continue east into the Missouri Valley tonight with broad northwesterly flow across Colorado. Overnight lows will be cool with mainly 30s for the lower elevations.
The low pressure system is forecast to track through northern TX, central MS, and AL this evening and through tomorrow. As the low moves south of us, showers and a slight chance of thunderstorms will develop on the northeast side of the low and bring persistent rain to the Mid-South. Temperatures will be much cooler and below normal with highs only topping out in the mid 50s to low 60s.
Temperatures turn colder tonight as a Pacific cold front sweeps through the region, then remain below average through the remainder of the week.
1049 AM EDT Mon Mar 30 2020 As low pressure moves east through the Great Lakes, cool and dry air will settle into the northern Ohio Valley today. A weak area of low pressure will then move across the southern states on Tuesday, perhaps bringing some light rain to northern Kentucky and far southern Ohio. A stacked area of low pressure is currently centered near eastern Ontario, moving slowly eastward. Stratocumulus clouds associated with the low are currently extending into our northern zones. This will set things up for some decent cooling, with min temps in the lower to upper 30s.
532 AM EDT Mon Mar 30 2020 Dry high pressure will build over the area today with continued above normal temperatures. A low pressure system will cross the area Tuesday and will bring widespread showers and a chance of thunderstorms.
Today through Tuesday High pressure across the region early this morning with clear skies and light winds. An upper trough moving into the Rockies will continue to advance eastward today, and we should see increasing high level clouds today, with a persistent southeasterly wind. There could be lingering showers in northeast NE early Tuesday morning, but the bulk of Tuesday will be dry with increasing sunshine, and another day with temperatures in the lower 60s.
Convection is expected to increase throughout the day today as an upper level trough moves from the Four Corners region into the Southern Plains, sending a weak cold front through the area overnight into early Tuesday morning. A warm front pushing inland from the coastal waters today will also lead to a steady increase in moisture and instability across the region, further enhancing the convective potential. Highs today will range from the low to mid 80s, with lows mainly in the 60s. Clearing skies and warm temperatures can be expected on Tuesday with highs approaching the lower 90s across the Rio Grande Plains.
Light and variable winds under the ridge, becoming increasingly easterly through the day. A narrow high pressure ridge remains in place for the the lower Mississippi Valley and Central Gulf Coast today. Weak high pressure not enough to keep a few showers from popping up over the northern tier of the state this morning. Winds are generally very light under the ridge, and mid and upper level moisture streaming clouds across the region ahead of a developing storm system to the west. Models have developed some showers and thunderstorms out across the state later this afternoon ahead of the low. Continued easterly flow because of the surface ridging in the eastern Gulf also assists in delaying any theta-e advection ahead of the low. Thunderstorm development north of the boundary will be a concern for wind and hail, elevated and tapping into cooler air.
657 AM EDT Mon Mar 30 2020 Brisk west winds will continue today as a deep low pressure area drifts towards New England and slowly weakens. It will be somewhat cool today and Tuesday, and then warm towards the end of the week before another cold front and rain arrives over the weekend. Some areas across the southwest may see some clearing during the first part of the night tonight, which could for enough radiational cooling for temperatures to fall below freezing. Otherwise, lows will be in the low to mid 30s. High pressure will move into the area on Tuesday as a southern stream low crosses into the southern Appalachians.
Surface ridging building in from the west, along with relatively flat flow aloft, will result in fair weather today.