Aikyam-Lab/Synoptic-Bench huggingface dataset:
(Today and Tonight) Gusty northwest winds will persist today on backside of expansive upper low over the eastern States. Red flag conditions however are not expected given the cooler temperatures forecast. Temperatures will likely drop to near or below freezing across much of northeast Oklahoma and northwest Arkansas and therefore a freeze warning will be issued for aforementioned area. Parts of southeast Oklahoma may also drop to near freezing, especially in the lower valley areas and this area may also be added to the freeze warning later today.
Pattern Synopsis/Forecast: Well-advertised and slow-moving vertically stacked low pressure sits atop central lower MI at this early hour. Evidence of the boundary layer already cooling over the past several hours with some light snow mixing in at times across the higher terrain. High temperatures today a few degrees cooler than Thursday.
Highs generally in the mid and upper 70s, a little cooler across the northeast Big Country where better cold advection will keep temperatures in the lower 70s.
350 AM EDT Fri Apr 8 2022 A large upper level low near the Great Lakes and deep troughing encompasses the eastern half of the U. The cold front that pushed through Florida yesterday continues to push south and east of the area taking with it any remnant showers. Interaction between the upper trough moving eastward toward the east coast and ridging over the western U. will produce a predominant NW wind flow that will bring cooler and drier air into the region.
While the cold front has pushed offshore, a tight pressure gradient will remain in place through today with westerly winds increasing during the afternoon, with max gusts around 30 mph. The upper low remains to the northwest of the area and while it is expected to stay to the north, will see increasing clouds today associated with this upper low. No precipitation expected with much drier air in place in the lower levels. Temperatures cooler today behind the front with a bit of a gradient with more clouds across the NW.
352 AM CDT Fri Apr 8 2022 A large upper low is centered across Wisconsin early this morning. High pressure ridge axis quickly moves across the area tonight.
Weak downslope warming will and upper ridging will help temperatures rise into the 70s by this afternoon, with some high clouds to break up the direct sunlight.
Large scale ridging is building into the Northern Plains in the wake of the departing upper low now centered over the Great Lakes. The influence of this ridge will favor dry conditions and clear skies through tonight.
1159 PM CDT Thu Apr 7 2022 A large and slow moving low pressure system will dominate the weather pattern across the region through Friday. although cold nights near or below freezing will continue. At the surface, a trough of low pressure will move east as well, shifting winds from west-southwest to northwest tonight.
Surface ridging will begin to spill into the area overnight, with the surface pressure gradient gradually relaxing. For tomorrow, a much drier airmass will begin to move into the area, as the upper ridge begins to shift into the Plains.
1228 AM CDT Fri Apr 8 2022 (The rest of tonight) Expansive upper low in the Great Lakes area maintaining deep northwesterly flow this evening. There will be a window early Friday morning for some snow flakes to mix in in the higher elevations of NW AR but odds of measurable precip in either form remain very slim. (Tomorrow through Thursday) The upper low over the Great Lakes region is expected to remain in place during the day Friday and then begin to push east/northeast Friday night. one more day of gusty northwesterly winds and cooler temperatures are forecast Friday. In the wake of the departing upper level low. a ridge of high pressure is progged to push across the Plains over the weekend.
The warmer temperatures, low dewpoint temperatures, and strong winds will lead to extreme fire danger in those western counties.
246 AM CDT Fri Apr 8 2022 A mature upper level low continues to rotate about the Great Lakes resulting in northwesterly flow across WTX. The height gradient will relax over the next 24 hours but not before bringing another risk of fire weather to portions of the CWFA behind a cold front which has cleared the area.
Deepening upper- level trough across the eastern U. With highs in the mid 40s today on the Plateau, it will not take a lot of time for temps to fall near to below freezing tonight with temps well below freezing aloft.
Sub-VFR cigs with a passing cold front are possible over the next several hours. 500 mb temps on 12Z sounding remain on the warmer side with -6C, so it will take a bit of a stronger updraft for hail formation. Model consensus remain fairly persistent in pushing the front through the region, with some cooler/drier air advection in its wake starting late tonight. By Friday afternoon, a benign weather pattern will be establishing with high pressure developing over the region. Temperatures today will climb into the low 90s with the warm/moist airmass prevailing, then a cooling trend starts on friday behind the front with highs, mainly in the low 80s.
The winds, along with an upper level ridge, will bring warmer temperatures into the CWA with highs in the upper 40s, in western MN, to the upper 60s, in central South Dakota.
Strong westerly flow aloft remains in place across the TN Valley this evening, to the south of a well-defined upper low that will shift slowly eastward through the Lower Great Lakes region overnight.
305 AM CDT Fri Apr 8 2022 Large upper low currently spinning over the Great Lakes will lead to continued north to northwest flow across the region today. This will lead to diurnally driven gusty northwest winds continuing across the region today, though winds are not expected to be as strong as the previous couple of days, as the upper low gradually pulls a little further east of the area.
255 AM MDT Fri Apr 8 2022 Current surface analysis shows high pressure moving into the region, with winds having finally diminished quite a bit across the area overnight. Upper level analysis shows large low now over the southern Great Lakes region, with ridge over much of the western US. Trough is located off the Pacific NW coast.
318 AM CDT Fri Apr 8 2022 A closed upper level low is evident on water vapor imagery across the Upper Midwest early this morning.
/issued 959 PM CDT Thu Apr 7 2022/ Light showers from high-based clouds continue over the Midsouth, around the southern periphery of a anomalously deep upper low centered over the upper Midwest. /issued 302 PM CDT Thu Apr 7 2022/ Clouds continue to spread into the Mid-South this afternoon thanks to a large scale upper trough that remains located over the Central United States. The upper trough will finally move east Friday Night which should allow the clouds to clear. If the winds diminish then frost will be likely occur across a good portion of the CWA as temperatures drop into the lower to mid 30s.
(This afternoon through Friday night) A broad, upper trough is centered over the Midwest with west to northwest upper winds over West Texas and Southeast New Mexico. The upper trough will move slightly eastward on Friday.
Deep upper trough moving into the forecast area will promote scattered showers through the day. SR Chattanooga Airport, TN 55 36 56 35 71 / 40 10 10 10 0 Knoxville McGhee Tyson Airport, TN 54 35 51 32 66 / 80 40 50 10 0 Oak Ridge, TN 53 35 51 32 66 / 80 30 50 10 0 Tri Cities Airport, TN 52 33 46 30 60 / 90 60 70 20 0 TN.
319 AM CDT Fri Apr 8 2022 We'll see a high pop/low qpf showery convection again today from the upper trof. Consistent modeling of sub freezing temps in our northwest warrants a freeze warning headline, per collaboration with our neighbors. Another headline is expected tmrw night, with freezing temps still possible far north, but better clearing/less wind making frost a better possibility for nearly the entire FA.
Primary challenge in the short term will revolve around showery/cool/breezy conditions associated with a robust upper low.
The sprawling closed cyclone that has been the culprit for the relentless NW wind the past 2 days, was spinning near Chicago at midnight, with strong NWly flow aloft continuing over SW KS. Dry air and dry ground will encourage radiational cooling to send temperatures well below normal sunrise Friday, mainly in the lower 30s, with upper 20s across the NW zones.
Early this morning, a large upper low continued to spin across the area. The upper low will continue to drift east throughout the day today. Spokes of energy will rotate around it, including a larger trough. Moisture will linger with the upper low as well. With temperatures cooling into the lower 30s, snow showers will be possible.
/issued 350 AM EDT Fri Apr 8 2022/ A large upper level low near the Great Lakes and deep troughing encompasses the eastern half of the U. The cold front that pushed through Florida yesterday continues to push south and east of the area taking with it any remnant showers. Interaction between the upper trough moving eastward toward the east coast and ridging over the western U. will produce a predominant NW wind flow that will bring cooler and drier air into the region.
Highs reach the low-mid 40s in ne lower MI, where rain will be more common, especially in the lower elevations. Pattern Synopsis/Forecast: Well-advertised and slow-moving vertically stacked low pressure sits atop central lower MI at this early hour. Evidence of the boundary layer already cooling over the past several hours with some light snow mixing in at times across the higher terrain.
Current temperatures are in the mid 40s with sunrise temperatures expected to dip into the low 40s. We could still see few wrap around showers across west Tennessee today as a deep upper level low over the Great Lakes shifts slowly to the east. High temperatures today are expected to be 15-20 degrees below normal, in the low to mid 50s. Any freezing temperatures should be confined to northeast Arkansas and the Missouri Bootheel, but confidence is low that even that area will cool to freezing. High temperatures Saturday should be in the low to middle 60s.
Onshore flow and a coastal eddy will return to bring back cooler weather over the weekend.
453 AM MDT Fri Apr 8 2022 An upper ridge of high pressure will be across the region today. Thus dry conditions and warmer temperatures than yesterday will occur. A trough will be pulling into the Pacific Northwest Friday, and then eastward into the northern Intermountain West and northern Rockies Friday night and Saturday. The associated cold front is expected to push into far western Wyoming late tonight, and then gradually across the rest of the area during the day Saturday. The cold front gets pushed southward into central Wyoming Saturday night, getting dragged along by the leading edge of the trough.
/issued 246 AM CDT Fri Apr 8 2022/ A mature upper level low continues to rotate about the Great Lakes resulting in northwesterly flow across WTX. The height gradient will relax over the next 24 hours but not before bringing another risk of fire weather to portions of the CWFA behind a cold front which has cleared the area.
Today Through Saturday Night An upper level closed low continues to rotate over the Great Lakes region. but a good portion of the CWA will see min RH values remain elevated due to cooler temps and cloud cover. The driest air will be across the SWRN counties where the temps will be warmer with less cloud cover. expect lows Sat morning to drop down to around or below freezing across many areas of the NRN half of AR. will post a Freeze Warning for these areas where the likelihood of subfreezing temps are highest. temps will be a bit warmer. Lows will be warmer for Sat night as moisture levels start increasing.
Much cooler on Saturday with high temperatures in the 50s across northern NV, and 60s to low 70s across central NV. Ridging over NV and the inter-mountain west early this morning will shift eastward through the remainder of the morning and into this afternoon. Trough energy currently over the Pacific NW will begin to impact NW NV later this morning with increasing clouds and more significantly, westerly winds gusting 25 to 35 mph mainly in areas north of the Highway 50 corridor. Gusty winds may produce areas of blowing dust through this afternoon and early evening with reductions in visibility possible, or at least hazy conditions, again mainly north of the Highway 50 corridor. Cooler on Saturday as broad trough energy expands across the Pacific NW and into much of the inter-mountain west.
A cold front will bring a return to rain today along with heavy snow in the mountains. A weather pattern shift will bring cooler and more unsettled conditions through the weekend.
A closed upper level low is evident on water vapor imagery across the Upper Midwest early this morning.
735 AM EDT Fri Apr 8 2022 An upper level trough will move into and across the area this afternoon into Saturday evening.
A clear sky is expected with low temperatures ranging from the lower to middle 20s in far eastern Colorado to the middle 20s to lower 30s elsewhere. we'll become more influenced by the upper ridge axis that reaches the area from the west overnight. much warmer air moves into the area under the ridge axis with high temperatures in the 75-80 degree range. For the overnight hours, a cold front moves through the area from the northwest.
While the cold front has pushed offshore, a tight pressure gradient will remain in place through today with westerly winds increasing during the afternoon, with max gusts around 30 mph. The upper low remains to the northwest of the area and while it is expected to stay to the north, will see increasing clouds today associated with this upper low. No precipitation expected with much drier air in place in the lower levels. Temperatures cooler today behind the front with a bit of a gradient with more clouds across the NW. A strong upper troughing remains over the eastern US on Saturday. Kept the forecast dry at this time, although models are spitting out a few sprinkles or light rain over the northern cwa during the afternoon and the main upper trough axis and cold pool move through in the afternoon.
620 AM CDT Fri Apr 8 2022 A large upper low is centered across Wisconsin early this morning. High pressure ridge axis quickly moves across the area tonight. As the low tracks across Kansas Saturday night expect a cold front to surge southeast across the area.
Deepening upper- level trough across the eastern U. With highs in the mid 40s today on the Plateau, it will not take a lot of time for temps to fall near to below freezing tonight with temps well below freezing aloft. Any lingering moisture will clear out slowly during the day on Saturday, with things warming into the low to mid 50s for most outside of the Plateau.
308 AM MDT Fri Apr 8 2022 An upper ridge of high pressure will be across the region today. Thus dry conditions and warmer temperatures than yesterday will occur. A trough will be pulling into the Pacific Northwest Friday, and then eastward into the northern Intermountain West and northern Rockies Friday night and Saturday. The associated cold front is expected to push into far western Wyoming late tonight, and then gradually across the rest of the area during the day Saturday. The cold front gets pushed southward into central Wyoming Saturday night, getting dragged along by the leading edge of the trough.
Clear skies remain in place as ridging continues to build east. Large scale ridging is building into the Northern Plains in the wake of the departing upper low now centered over the Great Lakes. The influence of this ridge will favor dry conditions and clear skies through tonight. SW flow does begin to arrive by Saturday afternoon ( east to our west) and the response in surface pattern will be for low pressure and south-southwest BL flow to redevelop. Before that surface ridging will tend to linger and temps aloft may not complete recover until WAA kicks in Saturday. Lows tonight also are still close to seasonal values in ND (mid-upper 20s) but are forecast to be cooler in our east (teens).
Pattern Synopsis/Forecast: Well-advertised and slow-moving vertically stacked low pressure sits atop central lower MI at this early hour. Evidence of the boundary layer already cooling over the past several hours with some light snow mixing in at times across the higher terrain.
351 AM PDT Fri Apr 8 2022 Strong high pressure over the region will remain in place today with record or near record highs expected.
High pressure remains over the area today with continued warm temperatures. The ridge axis will move east of the area this morning, with increased southwest flow across the region. A trough advancing towards the area will bring a cold front with windy conditions by this evening, with some areas seeing the onset of stronger wind this afternoon. Much cooler temperatures expected Saturday in response to the cold front, with values 10 to 15 degrees cooler than the warm temperatures on Friday.
515 AM MDT Fri Apr 8 2022 Current surface analysis shows high pressure moving into the region, with winds having finally diminished quite a bit across the area overnight. Upper level analysis shows large low now over the southern Great Lakes region, with ridge over much of the western US. Trough is located off the Pacific NW coast. Milder air returns for the next couple of days as the ridge moves east over the region later today into Saturday, along with a slow moving warm front. A cold front is progged to slowly move southeast through the area on Saturday, with brisk winds developing behind it.
Unseasonably deep troughing was in place over the eastern half of the North American domain. Also, an upper level disturbance moving southward across western Missouri on the west side of the trough will head this direction, bringing an increase in cloud cover and chances of showers. With an increase in clouds and higher rain chances, a chilly early April day is forecast, as high temperatures only warm into the lower 50s, much colder than normal highs this time of year of around 73.
This will be the last warmth for awhile as a cold front later today will cause a significant pattern change for the Northern Rockies for at least a week. The cold front will start to push into northwest Montana by early afternoon.
623 AM CDT Fri Apr 8 2022 (Today and Tonight) Gusty northwest winds will persist today on backside of expansive upper low over the eastern States. Red flag conditions however are not expected given the cooler temperatures forecast. Temperatures will likely drop to near or below freezing across much of northeast Oklahoma and northwest Arkansas and therefore a freeze warning will be issued for aforementioned area. Parts of southeast Oklahoma may also drop to near freezing, especially in the lower valley areas and this area may also be added to the freeze warning later today.
Pleasant day in store (post-frontal) with the cold frontal boundary across the southern peninsula and cooler and drier air filtering down the peninsula. Aloft, a rather large upper-level cyclone across the central/eastern CONUS will slowly spin towards the eastern seaboard and drag a reinforcing cool front across the area tonight. Cooler and much drier air will continue to be ushered in across ECFL with PCloudy skies tonight and comfortable temps/humidity through the period. A few normally cooler, inland rural locations overnight may realize U40s for lows. Tough call for an RFW since the lowest RH values are forecast across Lake/Volusia Cos, where ERCs are below RFW threshold, unlike the counties to the south.
839 AM CDT Fri Apr 8 2022 Deep troughing continues to be the main feature across the eastern CONUS. A closed low is centered across the Great Lakes region. However, the low-levels are rather dry with surface dewpoints currently in the low to mid 30s. Westerly winds will also be gusty at times gusting into the 15-25 mph range making it feel even cooler.
Cooling trend Friday and through the weekend as a cooler airmass aloft moves overhead coupled with low level coastal flow turning onshore and increasing.
A cold frontal boundary is making its way through the region this morning, and behind it, POPs will be decreasing dramatically this as dry air begins to filter into the area. With prolonged northwesterly flow and cloud cover, highs on Saturday will be even cooler than Friday with low 80s along the east coast and upper 70s along the west coast and interior.
712 AM EDT Fri Apr 8 2022 A cold front will move through tonight, followed by a series of weak and dry troughs through Saturday.
638 AM CDT Fri Apr 8 2022 Clear skies remain in place as ridging continues to build east. Large scale ridging is building into the Northern Plains in the wake of the departing upper low now centered over the Great Lakes. The influence of this ridge will favor dry conditions and clear skies through tonight. SW flow does begin to arrive by Saturday afternoon ( east to our west) and the response in surface pattern will be for low pressure and south-southwest BL flow to redevelop. Before that surface ridging will tend to linger and temps aloft may not complete recover until WAA kicks in Saturday. Lows tonight also are still close to seasonal values in ND (mid-upper 20s) but are forecast to be cooler in our east (teens).
The low will finally push east tonight and relinquish its hold on the midwest. Winds will diminish and high pressure will quickly settle in overnight. While we are close to our average last freeze date, it has been over a week since our last below freezing temps has been observed, and decent greening has occurred over that time.
Several reports received of wintry precipitation mixing in with rainfall across mid state region as these mid morning hours progress per cold temperatures aloft associated with upper level trough passage. Main upper level troughing influences will continue to move west to east across area as today progresses. A cold front is making its way across Middle Tennessee early this afternoon, with mainly light rain, sleet and snow contained within a narrow band of precipitation that has formed along the boundary.
With high pressure already centered across western SD will continue east, and so northwesterly winds should remain limited in strength and below headline criteria, despite teens min RH by this afternoon near and west of the Missouri River. The winds, along with an upper level ridge, will bring warmer temperatures into the CWA with highs in the upper 40s, in western MN, to the upper 60s, in central South Dakota.
Low temperatures will not be quite as cold as what we saw this morning, with lows generally in the low to mid 40s. Warmer temperatures are forecast Saturday, with highs back above seasonal normal.
/issued 1032 AM CDT Fri Apr 8 2022/ An upper level trough remains located over the Mid-South this morning. Current temperatures are in the mid 40s with sunrise temperatures expected to dip into the low 40s. We could still see few wrap around showers across west Tennessee today as a deep upper level low over the Great Lakes shifts slowly to the east. High temperatures today are expected to be 15-20 degrees below normal, in the low to mid 50s. Any freezing temperatures should be confined to northeast Arkansas and the Missouri Bootheel, but confidence is low that even that area will cool to freezing. High temperatures Saturday should be in the low to middle 60s.
Colder air will sink into the area and sub-freezing temperatures are likely across much of southeast Missouri and southern Illinois tonight.
An upper trough centered over the Great Lakes/Ohio Valley will shift eastward through tonight. An isolated thunderstorm is possible along with some small hail given low freezing levels. Deepening cold air will also support scattered snow showers across the higher terrain of the western and northern Alleghenies, with a dusting of snow possible on the summits and ridgetops. And with freezing levels dropping to around 2000 feet, the higher elevations of the northern Mountains and the Laurel mountains could see a dusting of snow overnight. The trough axis finally moves through Saturday night with wrap around moisture keeping some chances of showers mainly over the northern mountains with NW flow off of the Great Lakes.