Aikyam-Lab/Synoptic-Bench huggingface dataset:
In the MO River basin, where temperatures are expected to remain near to above freezing for much of today and this evening, this will materialize mainly in liquid form as drizzle or sprinkles. Higher confidence in seeing flurries across southwest MN and south central SD and did introduce a light dusting (less than half an inch) of snow for portions of southwest MN near the Buffalo Ridge where saturation is more likely to materialize.
344 AM CST Thu Feb 27 2020 High pressure settling in over the area this morning keeping things cool and dry. Return flow will help bring a lot more moisture back to the area but temps will remain very comfortable ahead of the next cold front that is expected Wed.
For the short term period, tonight into Thursday night, upper ridge over the western portion of the country, and a deep trough/closed low over the eastern portion of the country, puts the CWA under a N/NW flow aloft. light westerly flow returns for thursday night as systems exits east allowing for high pressure to build back over the region. Daytime highs on Thursday reach into the mid 40s to the lower 50s, and going into Thursday night, lower to mid 20s on tap as a westerly downslope wind aids in keeping numbers near to above normal.
614 AM EST Thu Feb 27 2020 Aviation - Cold and windy with scattered snow showers through Friday - Dry weekend with moderating temps - Above normal temps Mon through Wed with occasional rain -- Cold and windy with scattered snow showers through Friday -- For the next couple days the eastern half of the nation will be under the influence of a deep longwave trough and cold air. The upper low will be positioned over srn Quebec, sustaining a deep/brisk cyclonic flow across the GrtLks Rgn.
Elsewhere over southern Colorado, dry conditions are expected to prevail during the next 24 hours in combination with warmer temperatures and increased wind potential with localized wind gusts challenging 35 mph at times(favoring eastern locations, primarily during the late morning into the afternoon time-frame).
Satellite imagery this morning is showing clear skies from border to border with high pressure located over South Texas. Dry conditions are expected today with temperatures slightly warmer versus yesterday as southerly winds return as the aforementioned high slides along the gulf coast. Pattern aloft remains amplified with ridging along the west coast and subsequently broad down stream troughing over the eastern Conus.
500 AM CST Thu Feb 27 2020 The elongated upper level low over western Ontario into the northern Great Lakes this morning will move slowly to the east today. A northwest flow regime will remain over the region in the wake of the upper level low which should allow another short wave trough to move across the area overnight. Forecast soundings suggest the lower levels of the column may become saturated overnight with the approach of the short wave trough and just enough lift through this saturated layer to support some very light snow or flurries. The long wave trough clears out and upper-level ridging builds in behind. Temperatures quickly rebound over the weekend as warmer air advects into the region.
Areas of freezing fog are occurring in some valleys of Northwest Montana this morning, so watch for localized icy roads and reduced visibility. Otherwise, it will be a fair weather day across much of the Northern Rockies with high temperatures a few degrees warmer than yesterday.
With temperatures still below 0C aloft along with below freezing surface temperatures, northwest Tennessee has the potential, so see snow late Thursday night into Friday morning. High temperatures Friday will generally be in the lower 50s. A ridge will settle over the Mid-South, delivering a pleasant weekend.
322 AM CST Thu Feb 27 2020 The day will start with an upper trough over the Eastern US and a ridge over the West. This ridge will slowly shift east flattening out as it does.
The significant warmup is still expected for the weekend with ridging aloft across the Midwest.
High pressure will begin to nudge its way across the plains from the west on Friday. starting a period of warmer weather across the local area.
250 AM PST Thu Feb 27 2020 High pressure remains in control heading into the start of the weekend over western Nevada and the Sierra with dry conditions, light winds, and above average high temperatures. Low pressure will impact the region this weekend with gusty southwest winds and chances for rain and snow. By Friday, the upper level ridge that has been responsible for our mild weather will weaken and shift towards the east making way for a low pressure system that will impact the region this weekend.
/issued 354 AM CST Thu Feb 27 2020/ SHORT TERM (Now through Friday): As high pressure continues to settle deeper into Deep South Texas today and begins to shift to the east on Friday, skies will remain clear and winds will be light and variable through the short term. With radiational cooling, some local areas in the ranchlands may drop to near freezing before sunrise this morning, but generally, temperatures are expected to remain above freezing across the region.
Later this morning a weak cold front will drop south through the area however this will only lead to a wind shift as temperatures will warm nicely behind the boundary. Upper level ridge that is positioned across the U.
Morning water vapor channel satellite imagery depicts upper ridging affecting Southern Oregon and Northern California, while an upper low spins well offshore to the south between Hawaii and Baja California. Friday's increasing winds across the area will be a sign of a change in weather, with a much cooler air mass approaching behind a cold front that should arrive Friday night.
High pressure will bring mild weather conditions to the area through the remainder of the work week with well above normal temperatures and light winds.
Warmer Friday with highs in the upper teens to mid 20s under sunny skies.
Temperatures will only climb into the upper 40s/lower 50s as the ridge axis drifts eastward and winds become more westerly. Upper level flow out of the northwest will keep conditions just slightly cooler than normal for this time of year as cold, continental air flows overhead.
An amplified ridge over the western states will start to translate east resulting in Friday high temperatures climbing into the mid 40s across north-central Missouri to low and mid 50s across eastern Kansas and west-central Missouri.
Temperatures will be near freezing during the rush hour on Friday so we will need to watch the situation carefully. Temperatures in the afternoon will range from the upper 30s Plateau to the lower to mid 40s elsewhere.
A very large cyclone over southeastern Canada and New England has carved out a trough across most of the eastern CONUS, placing us in northwest flow. By this weekend, the ridge currently over the west coast will slide east and be over the central CONUS.
Expect warmer and drier weather through Friday, with some locally gusty winds, at times.
634 AM EST Thu Feb 27 2020 Dry and cooler air will settle across the area through the weekend. Dry and cool high pressure over TX and the western Gulf of Mexico will ridge into the area. An upper level trough over the eastern conus will shift offshore, but broad troughiness will remain over the eastern half of the nation.
Winds lighten overnight and temps drop to the lower to mid 30s north, and the upper 30s to mid 40s central and south.
High pressure has settled in and with the drier air, clear skies reign. Most locations, with the exception of those along the coast, will likely reach near, or briefly reach, freezing.
Have seen up to a half inch of accumulations in the heavier snow showers, and as temperatures continue to fall below freezing, could see some slick spots on untreated/snow-covered roads for the morning commute. Expect fairly quiet weather for the rest of today as northwesterly flow on the back side of the upper low continues to advect in colder and drier air. Temperatures this morning will start off in the mid 20s, with wind chills dipping into the low 20s/upper teens. Clouds will begin to increase again tonight ahead of a quick moving disturbance through the upper trough. Overall, will introduce slight chance PoPs tonight after Midnight EST and through Friday morning, with main p-type being snow, although a rain/snow mix would briefly be possible along the KY/TN border where temperatures will be a little warmer.
/issued 322 AM CST Thu Feb 27 2020/ The day will start with an upper trough over the Eastern US and a ridge over the West. This ridge will slowly shift east flattening out as it does.
Light and variable winds are expected with a shift to south to southeast winds later today as high pressure shifts east. High pressure has settled in and with the drier air, clear skies reign. Most locations, with the exception of those along the coast, will likely reach near, or briefly reach, freezing.
354 AM MST Thu Feb 27 2020 Current upper level analysis has ridging across the western CONUS, with northwest flow aloft across the northern Great Plains. Skies will continue to clear tonight as western upper ridge edges closer to the region. Upper ridging will build in to the Northern Plains for the end of the week, bringing much warmer temperatures to the forecast area.
High temperatures today will be 5 to locally 10 degrees warmer than yesterday with high temperatures mostly in the 80s for coastal and valley areas except near the coast.
527 AM CST Thu Feb 27 2020 Widespread VFR conditions are expected for all the terminals today as high pressure along the gulf coast prevails. Light winds will turn more southerly with time as the high moves off to the east. Satellite imagery this morning is showing clear skies from border to border with high pressure located over South Texas. Dry conditions are expected today with temperatures slightly warmer versus yesterday as southerly winds return as the aforementioned high slides along the gulf coast. Pattern aloft remains amplified with ridging along the west coast and subsequently broad down stream troughing over the eastern Conus.
It's Cooler Today, Turning Colder Tonight. Much cooler, temps in the 50s late this morning not expected to warm much today. Guidance was trending warmer across the south, but seems unlikely due to surge of cooler air over FL.
Dry with afternoon high temperatures trending warmer today and again on Friday.
446 AM MST Thu Feb 27 2020 Northwest flow aloft over eastern Montana with an upper trof digging over the Great Lakes and flat ridge over the west coast. The warming trend continues into the weekend with the western ridge pushing eastward across the northern Rockies.
315 AM MST Thu Feb 27 2020 Current upper level analysis has ridging across the western CONUS, with northwest flow aloft across the northern Great Plains. Skies will continue to clear tonight as western upper ridge edges closer to the region. Upper ridging will build in to the Northern Plains for the end of the week, bringing much warmer temperatures to the forecast area.
Flurries and perhaps a few brief snow showers will occur across the Central Ridge and Valley Region of the state.
Upper ridge building onto the coast will keep clear skies and light winds over the region today.
However, a weak cold front will move through the region after 28/11z and winds will become northwesterly between 5 to 10 mph.
Currently, those showers are along the KS/NE border with snow as the primary ptype with a cooler airmass in place there. There will be more dry air to saturate over our area and we are warmer, so expect light showers mostly in the form of rain.
144 PM CST Thu Feb 27 2020 Most notable feature on today's synoptic scale map is an upper low positioned near Lake Superior. Southwest of this feature, broad northwesterly flow is in place ahead on a high amplitude ridge along the Pacific Coast.
1102 AM EST Thu Feb 27 2020 Currently - Winds are slowly coming down behind the recent cold front passage, which now rests across western Cuba and stretches into the Bahamas. Behind the cold front, an extensive stratus deck still remains across the Keys and South Florida. Temperature wise, it's mind 60s in the Upper and Middle Keys, with upper 60s to near 70 in the Lower Keys. This in turn is slowing the development of a thermal trough which would decrease winds downstream across the Florida Bay, eastern Hawk Channel, and eastern Florida Straits waters.
With the low level flow remaining cyclonic and the thermal trough pivoting through the area on Friday.
1239 PM EST Thu Feb 27 2020 Aviation - Cold and windy with scattered snow showers through Friday - Dry weekend with moderating temps - Above normal temps Mon through Wed with occasional rain -- Cold and windy with scattered snow showers through Friday -- For the next couple days the eastern half of the nation will be under the influence of a deep longwave trough and cold air. The upper low will be positioned over srn Quebec, sustaining a deep/brisk cyclonic flow across the GrtLks Rgn.
It will be warmer with this disturbance, so just light rain or sprinkles are possible.
1224 PM EST Thu Feb 27 2020 Ridging along the Gulf Coast will maintain a dry westerly flow into the forecast area through Friday.
Upper ridging will then slowly build east over the northern Plains on Friday with warmer, drier air advecting in from the west.
1137 AM CST Thu Feb 27 2020 The elongated upper level low over western Ontario into the northern Great Lakes this morning will move slowly to the east today. A northwest flow regime will remain over the region in the wake of the upper level low which should allow another short wave trough to move across the area overnight. Forecast soundings suggest the lower levels of the column may become saturated overnight with the approach of the short wave trough and just enough lift through this saturated layer to support some very light snow or flurries. The long wave trough clears out and upper-level ridging builds in behind. Temperatures quickly rebound over the weekend as warmer air advects into the region.
Modest warming at 850 mb combined with downslope NWly momentum will allow afternoon temperatures to return to the lower 50s, which isn't far from normal for late February. Warmer mid 50s near the Oklahoma border, with the warmest upper 50s in the Red Hills SE of Dodge City. Models show a well established PNA pattern across North America, with a strong trough over SE Canada, and broad ridging over the SW US.
Upper level high pressure ridge with axis along the west coast will shift inland today with dry conditions prevailing and just some high clouds spilling over the ridge for partial cloud-cover at times. Hoenisch Expect warmer and drier weather through Friday, with some locally gusty winds, at times.
In regards to p-type, model soundings show a relatively saturated column extending to the lower limits of the DGZ, with temperatures across the region expected to fall below freezing, implying that flurries/light snow would be favored. Another impulse diving southward into a sharpening upper trough Friday evening will bring a quick shot of light rain transitioning to light snow as temperatures fall. Low temperatures will be in the lower and middle 20s, so any snow that falls could lead to slick spots on roads.
Further west towards the Front Range these winds will have less impacts with more sheltering and possible developing Longmont anticyclone. All of these things should fade by late morning as the trough moves eastward.
Tonight and Friday Northwest flow under an upper level trough will produce lake effect snow showers across far north-central Wisconsin through Friday morning with some scattered flurries across the rest of northeast Wisconsin through the early evening hours. If winds die off temperatures could fall further, if they stay up temperatures could be a bit warmer.
We will remain under a deep longwave trough aloft, so highs will only reach the upper 30's/low 40's today. All terminals will have prevailing VFR flight conditions through tonight as high pressure briefly brings dry but cold weather. Exact timing of the low cigs and vis is low confidence. RG Chattanooga Airport, TN 33 50 32 49 32 / 10 40 40 0 0 Knoxville McGhee Tyson Airport, TN 32 45 30 44 30 / 20 60 40 10 0 Oak Ridge, TN 32 46 29 45 29 / 20 70 40 10 0 Tri Cities Airport, TN 26 41 26 38 26 / 10 80 50 10 10.
High pressure over the western Gulf is building across the area. Temperatures will be in the lower to mid 30s north, and in the upper 30s to mid 40s central and south.
Generally light and variable winds along with clear skies will persist as high pressure remains in the area. High pressure has settled in and with the drier air, clear skies reign. Most locations, with the exception of those along the coast, will likely reach near, or briefly reach, freezing.
222 PM CST Thu Feb 27 2020 One more cold night tonight with lows in the 30s across the CWA, but should remain just above freezing, or right a 32F at worst near daybreak in the more interior and drainage prone areas.
118 PM MST Thu Feb 27 2020 Upper ridging across the western CONUS continues to slide eastward, toward the northern High Plains.
245 PM CST Thu Feb 27 2020 Mostly clear skies across the Northland region this afternoon thanks to a strong high pressure system. Low temperatures around 0 are likely across Cass and Crow Wing counties as a weak trough brings increased cloud cover and light snow across north-central Minnesota. A strong upper level ridge begins moving into the region on Friday, with mostly sunny skies and generally light winds.
High pressure aloft will expand across the region through the remainder of the week.
A weak cold front extended from northwestern Oklahoma to near Lubbock. The weak cold cold front will sag south and enter our northern counties (Big Country area) tonight. The colder readings are expected to be in the low-lying areas and river valleys of some of our eastern and southern counties. Temperatures across our area will be warmer on Friday, with highs expected to be in the upper 60s to around 70 degrees.
Temperatures will drop into the 30s and we do expect some readings near freezing in the Hill Country and adjacent cool spots along the I-35 corridor near Austin. Afternoon highs should range from the mid 60s to the lower 70s. The only impact from this trough will be a gradual shift to northerly winds for areas generally north of I-10. This along with southerly winds in the low-levels will keep overnight lows in the upper 30s to mid 40s for most areas.
202 PM CST Thu Feb 27 2020 At the surface, high pressure was building in from the northwest early this afternoon. A chilly northwest flow pattern across the area will continue through Friday with a deep longwave trough anchored over the eastern US. Northwest flow aloft will be replaced by broad ridging and persistent low to mid-level warm advection heading into the weekend.
Friday a high pressure center moves in from the northwest which should keep the skies generally mostly sunny to partly cloudy.
158 PM EST Thu Feb 27 2020 Ridging along the Gulf Coast will maintain a dry westerly flow into the forecast area through Friday.
1009 AM MST Thu Feb 27 2020 Current upper level analysis has ridging across the western CONUS, with northwest flow aloft across the northern Great Plains. Skies will continue to clear tonight as western upper ridge edges closer to the region. Upper ridging will build in to the Northern Plains for the end of the week, bringing much warmer temperatures to the forecast area.
High pressure will build from the west through Tonight, with cold advection continuing. Still expecting readings around freezing inland though, with lowest readings likely in the Suwannee valley which will be more under the ridge.
848 AM PST Thu Feb 27 2020 High pressure will continue to bring a warm, drying trend through the end of the week.
245 PM CST Thu Feb 27 2020 The roller coaster of recent temperature swings will dampen somewhat this week, absent any unforeseen strong cold fronts headed our way. The ridge over the west coast responsible for current NW flow aloft will move east and de-amplify into the weekend as a mid-latitude Pacific trough pushes onshore by Sat morning.
1026 AM EST Thu Feb 27 2020 Ridging along the Gulf Coast will maintain a dry westerly flow into the forecast area through Friday.
Widespread VFR conditions are expected for all the terminals today as high pressure along the gulf coast prevails. Light winds will turn more southerly with time as the high moves off to the east. Satellite imagery this morning is showing clear skies from border to border with high pressure located over South Texas. Dry conditions are expected today with temperatures slightly warmer versus yesterday as southerly winds return as the aforementioned high slides along the gulf coast. Pattern aloft remains amplified with ridging along the west coast and subsequently broad down stream troughing over the eastern Conus.
1228 PM EST Thu Feb 27 2020 Ridging along the Gulf Coast will maintain a dry westerly flow into the forecast area through Friday.
1053 AM MST Thu Feb 27 2020 Very light snow continues in the highest terrain of the central and northern Colorado mountains early this Thursday morning. Areas that have remained clear overnight outside of influence of the weak trough have really plummeted. A warm-air advection regime will move in on Friday afternoon resulting in warmer temperatures - afternoon highs will finally exceed seasonal averages by around 5 degrees or so under sunny skies.
As low temperatures sink into the lower to mid 30s and winds become light, the development of patchy late night frost is possible. A weak surface pressure trof slipping southeast over the Lower MS River tonight advances into the southeast US and through the central Gulf coast Friday. In the wake of the passage of this feature, high pressure over the western Gulf expands eastward Friday night. Expect sunny skies and high temps in the low 60s.
/Tonight through Friday Night/ Sunny skies and slightly below normal temps with afternoon highs in the mid to upper 50s today as high pressure has settled over the region. Quiet conditions will remain overnight, but with winds returning to the southwest today, not expecting widespread freezing temps tonight. Overnight lows will fall into the low to mid 30s across most of the region, with near freezing temps confined to the northern and eastern areas of the CWA. High pressure will remain in place on Friday, but a weak frontal boundary will push through the region during the early morning hours. Despite the northwest winds, not much cooler air behind the boundary, as a warmer day is expected.
If the activity survives into the higher terrain of NW AR later tonight, some snowflakes would also be possible.
The thinking is temperatures will warm just enough that any snow in the afternoon over north GA will be limited to the highest elevations. Overall amounts look to be around 1/2 inch or less but maybe up to an inch at the highest elevations. The best snow chances will favor the NE Mountains where 1/2 to 1 inch could be possible at the highest elevations and generally less elsewhere over the NE counties.
1255 PM EST Thu Feb 27 2020 Low pressure stalls and pivots well north of the CWA through Friday.
Another cold night looks to be in store this evening with temperatures dipping into the 30s across most of the area, although a drop below freezing like we saw across the northern portion of the area last night is not expected. An onshore flow pattern will begin to redevelop overnight on Friday as high pressure slides eastward, which should pave the way for warm and moist conditions this weekend.
In fact, this high pressure will have influence over us for the next few days. Due to this high pressure, clear skies will prevail tonight.