Aikyam-Lab/Synoptic-Bench huggingface dataset:
A cold front will move across the region after 09/08Z bringing a wind shift from southwest to northwest. A strong trough approaching from the northwest, combined with high temperatures in the upper 80s, to support sufficient instability to bring thunderstorms to deep east Texas, north Louisiana, and south central Arkansas this afternoon. Upper-flow to become northwest tonight with a cold front forecast to move southeast across the region.
A strong cold front will cross the area this afternoon and evening, bringing a good chance for thunderstorms. Blustery and much colder weather will dominate the area on Thursday as low pressure deepens near 980 mb over the northeast U. and a 1024 mb ridge builds down the Plains.
/issued 351 AM CDT Wed Apr 8 2020/ An upper level low just off the SOCAL coast will slowly drift eastward today making its way to near KEED by Thursday morning. A minor ridge will remain in place today across west Texas with the upper level flow slowly becoming southwesterly over time. A cold front will drop into our part of the state this afternoon and while we will see very low RH values (lower teens) the wind speeds will also remain on the low side thus limiting fire weather concerns.
The low pressure system off the southern California coast will turn east and advance into extreme southern Nevada by late Thursday. Somewhat cooler and wet conditions will impact much of Utah through midweek, with drier conditions returning late in the week.
A cold front passage Wednesday night will bring another round of showers to the region, followed by much cooler and relatively drier air. Late Wednesday a positively tilted trough North of the Great Lakes will drag a robust cold front through the area with another round of precipitation possible through the overnight into Thursday. The stacked low pressure will move eastward from the Great Lakes towards Nova Scotia. Each one will bring a reinforcing shot of cooler air and a slight uptick in shower coverage.
442 AM CDT Wed Apr 8 2020 The big story today will be the much cooler airmass that will sink south into our region behind a fast moving cold front this morning. Our light west winds this morning will turn northerly and increase behind the cold front. Strong mixing behind the cold front to at least 800 mb, and maybe as high as 750 mb should result in northerly wind gusts of 30 to 40 mph by late morning and this afternoon behind the front. It will be a dry frontal passage and the main story will be the cooler highs in the 60s over most Nebraska counties to the 70s with more time south of the front over Kansas. It will be much cooler and back below freezing for many locations.
703 AM EDT Wed Apr 8 2020 Thunderstorms developing this morning along a cold front will move southeast by this afternoon. Another round of showers and thunderstorms is expected tonight when the next cold front is forecast to sweep through from the west.
1032 AM EDT Wed Apr 8 2020 Ridge axis of high pressure over the west Atlantic will remain south of the area today, with low level winds out of the W/NW.
Surface observations reveal temperatures already in the lower to mid 80s with dew points in the lower 70s, making it feel muggy. Deep layer ridging will remain in place across the Gulf of Mexico and western Caribbean this afternoon. This over time gets shoved southward in response to a deepening upper level low over Canada that will swing southeast late tonight into Thursday.
Precip ends on Thursday morning with drier and cooler air moving in.
856 AM EDT Wed Apr 8 2020 Dry stable conditions (via 12Z Raob data) under high pressure over the region will maintain pleasant warm dry weather across the entire forecast area the remainder of today. Morning temperatures in the upper 60s to lower 70s will climb into the mid to upper 80s over inland locations during the afternoon, with slightly cooler readings (lower 80s) along the coast due to the onshore flow.
639 AM CDT Wed Apr 8 2020 The big story today will be the much cooler airmass that will sink south into our region behind a fast moving cold front this morning. Our light west winds this morning will turn northerly and increase behind the cold front. Strong mixing behind the cold front to at least 800 mb, and maybe as high as 750 mb should result in northerly wind gusts of 30 to 40 mph by late morning and this afternoon behind the front. It will be a dry frontal passage and the main story will be the cooler highs in the 60s over most Nebraska counties to the 70s with more time south of the front over Kansas. It will be much cooler and back below freezing for many locations.
526 AM MDT Wed Apr 8 2020 Current surface analysis shows cold front exiting southern portions of the forecast area, with north to northwest winds and cooler air slowly settling into the region. Upper level analysis shows low pressure over central Canada and a cutoff low along the southern CA coast. Near to slightly below average temperatures will return to the area for the next couple of days behind the cold front.
A low pressure system will bring cooler temperatures, along with chances for rain and high country snow showers Wednesday afternoon through the remainder of the work week. A downturn in shower activity and warmer temperatures are forecast for the weekend. An area of low pressure is currently located just off the coast of southern California this morning.
341 AM MDT Wed Apr 8 2020 The GOES-R WV/IR imagery depicted a digging upper level trough into the northern CONUS, and slow-moving upper level low offshore of southern CA. The leading edge of cooler air extended from the NE/SD border thru northeast WY into west-central MT. Temperatures will be noticeably cooler today compared to the past few days with highs in the 50s.
735 AM EDT Wed Apr 8 2020 Dry weather today will give way to another round of showers late tonight into Thursday morning with a cold frontal passage. Periodic showers and cooler weather expected through the end of the week. Late Wednesday, a positively tilted trough North of the Great Lakes will drag a robust cold front through the area with another round of precipitation possible through the overnight into Thursday. The stacked low pressure will move eastward from the Great Lakes towards Nova Scotia. Each one will bring a reinforcing shot of cooler air and a slight uptick in shower coverage.
Current surface analysis places low over Manitoba, with cold front dropping south into the upper Midwest/central plains.
A cold front will move south across the area tonight knocking temperatures back down to near or slightly below normal Thursday through the weekend.
Weak ridging today will make for dry and mostly sunny conditions, with this feature flattening by Thursday as NW flow aloft sets in.
617 AM CDT Wed Apr 8 2020 While another day of above normal temps are in store today, a cold front will push south through the region this afternoon and early evening due to a an upper low progged to translate from south central Canada and into the Upper Mississippi Valley and Great Lakes Regions.
Wet weather and cooler than normal temperatures can be expected over the district through Thursday.
/issued 412 AM EDT Wed Apr 8 2020/ Westerly flow will be in place through Thursday with high pressure ridging across south Florida.
An upper ridge is centered over the NE Pacific waters this morning, and this will generally be the case for the next 7+ days per the vast majority of GEFS (American) and ECE (European) ensemble members. A surface thermal trough is observed on the latest pressure analysis, and in response, gusty northeast winds are being observed in some high terrain areas from the Coast Range to areas just east of the Cascades.
The cold front has pushed into the northern zones with some low clouds forming behind the front. The cold front will bank up against the continental divide this afternoon and then ease into southwest WY this evening with a wind shift to the east northeast. Otherwise, a dry day is expected with the cooler high temps along and east of the divide. Thursday will be dry over the region with light wind and slightly warmer high temps.
The region will be between low pressure to the east and high pressure approaching from the west today. Models are in pretty good agreement that there may be some light rain showers as the high begins to nose in this morning, and already seeing some accas looking cloud cover over the western part of the area. The wind speeds will diminish tonight as the high continues to approach the area, becoming centered over the Upper Midwest on Thursday.
It's been a very pleasant day so far with temperatures in the low to mid 70s and plenty of sunshine.
This afternoon through Thursday night This morning's cold front continues to push south, slowly making its way over southern portions through this evening. Cooler temperatures this afternoon east of the Divide, in the wake of the cold front, with seasonal temperatures west of the Divide. Similar conditions will occur Thursday, with dry weather and light winds over the region and slightly warmer high temps.
A short wave trough was bringing some mid level clouds along with some weak returns on radar this morning. Highs in the upper 40s to the lower 50s look fine by late afternoon. The region will be between low pressure to the east and high pressure approaching from the west today. Models are in pretty good agreement that there may be some light rain showers as the high begins to nose in this morning, and already seeing some accas looking cloud cover over the western part of the area. The wind speeds will diminish tonight as the high continues to approach the area, becoming centered over the Upper Midwest on Thursday.
1201 PM CDT Wed Apr 8 2020 The big story today will be the much cooler airmass that will sink south into our region behind a fast moving cold front this morning. Our light west winds this morning will turn northerly and increase behind the cold front. Strong mixing behind the cold front to at least 800 mb, and maybe as high as 750 mb should result in northerly wind gusts of 30 to 40 mph by late morning and this afternoon behind the front. It will be a dry frontal passage and the main story will be the cooler highs in the 60s over most Nebraska counties to the 70s with more time south of the front over Kansas. It will be much cooler and back below freezing for many locations.
328 PM EDT Wed Apr 8 2020 Deep layer ridging remains in place across the Gulf of Mexico and western Caribbean. Upstream the next upper level low is moving ashore across southern California. Well to our north, a deepening upper level low is diving southeast from Canada and across the Great Lakes. At the surface, weak high pressure cell continues to hang on in the eastern Gulf of Mexico. Surface observations show temperatures in the mid 80s with dew points still in the lower 70s.
High pressure will maintain warm dry weather across the central and southern portions of the forecast area through Thursday, while a few isolated showers will be possible across the northern Nature coast on Thursday as a weak frontal boundary approaches from the north. Temperatures will remain above normal with lows tonight in the upper 60s to lower 70s with daytime highs on Thursday in the lower 80s along the coast, and mid to upper 80s inland.
A high pressure across the Western Caribbean will remain in place at the surface.
Winds decrease and become more variable overnight in approach of a cold front, while CIGS lower. Temperatures are generally in the low to mid 70s, closer to what should be normal early April high temperatures.
An upper ridge will build into the Pacific Northwest today providing our area with mostly clear skies, light winds, and warmer temperatures.
Expect highs in the upper 30s to the lower 40s across the cwa on Thursday afternoon.
1059 AM CDT Wed Apr 8 2020 A short wave trough was bringing some mid level clouds along with some weak returns on radar this morning. Highs in the upper 40s to the lower 50s look fine by late afternoon. The region will be between low pressure to the east and high pressure approaching from the west today. Models are in pretty good agreement that there may be some light rain showers as the high begins to nose in this morning, and already seeing some accas looking cloud cover over the western part of the area. The wind speeds will diminish tonight as the high continues to approach the area, becoming centered over the Upper Midwest on Thursday.
258 PM MDT Wed Apr 8 2020 The focus in the short term is on near critical fire weather conditions over the southwestern sections of the forecast area through the remainder of this afternoon along with cooler temperatures moving in late today behind a cold front. With relative humidity values hovering around 15 percent along with wind gusts approaching 25 mph as a cold front moves into the northern part of the forecast area, expect near critical fire weather conditions to remain in place through the remainder of today.
237 PM MDT Wed Apr 8 2020 Brisk northwest flow aloft behind a cold front has produced breezy conditions across much of western SD this afternoon. As the front continues to push southward, pressure rises will cease and belt of strongest winds aloft will rotate eastward as upper trough pushes southeastward out of southern Saskatchewan and Manitoba.
307 PM CDT Wed Apr 8 2020 The pattern aloft reflected a cutoff low pressure system off the coast of southern CA and an upper trough/closed low over Saskatchewan/Manitoba and this low was translating southeast across the plains/Upper Midwest region. A cold frontal boundary associated with the northern system advanced south thru our region this morning, bringing a wind shift to the north/northwest with cooler air advecting south behind the boundary. Thursday will see a reinforcing shot of cold air backing into our region as energy translates across the upper Midwest region, deepening the upper trough to our east.
A cold front will move through the area this evening. A colder airmass will move into the region behind the front allowing temperatures to fall overnight with and only allowing the highs on Thursday to climb into the Middle 50s to near 60 degrees.
On Thursday, despite full sunshine, cold northwest winds will pickup with gusts near 35 mph at times, so temperatures will struggle to rise with highs only in the low 50s to low 60s, almost 10 degrees below normal for this time of year.
125 PM EDT Wed Apr 8 2020 Dry weather today will give way to another round of showers late tonight into Thursday morning with a cold frontal passage. Periodic showers and cooler weather expected through the end of the week. Late Wednesday, a positively tilted trough North of the Great Lakes will drag a robust cold front through the area with another round of precipitation possible through the overnight into Thursday. The stacked low pressure will move eastward from the Great Lakes towards Nova Scotia. Each one will bring a reinforcing shot of cooler air and a slight uptick in shower coverage.
251 PM MDT Wed Apr 8 2020 The low pressure system has been like watching a hurricane head for the coast.
At the surface, a trough axis extended from southern Lake MI through northeastern OK. Furthermore, a modest pressure gradient behind the trough axis, has allowed for northwest winds to be sustained at 15- 25 with gusts up to 35 MPH.
A cold front will drop south through the area tonight however the only real affect will be a slight cool down tomorrow afternoon (highs in the low to mid 70's) and a wind shift to more easterly winds early in the day. There may be some low clouds develop around sunrise however very dry near surface air should prevent fog development on the backside of the cold front.
1048 AM MDT Wed Apr 8 2020 Current surface analysis shows cold front exiting southern portions of the forecast area, with north to northwest winds and cooler air slowly settling into the region. Upper level analysis shows low pressure over central Canada and a cutoff low along the southern CA coast. Near to slightly below average temperatures will return to the area for the next couple of days behind the cold front.
However, a cold front will bring additional chances for showers and thunderstorms this evening and overnight. Water vapor imagery depicting strong upper low moving into Manitoba with 12Z ROABs indicating strong mid-upper level speed maxes moving through the base of the trough. Strong gradient sets up over the area behind this system as high pressure builds into the northern plains.
A cold front will move south across the area Thursday morning, switching winds to a light northerly and northeast direction. Farther north, a cold frontal boundary will move into the area, but during the evening hours, turning winds to the north along/north of the I-20 corridor during the overnight hours. (Thursday through Wednesday) A fairly strong cold front will pass through the area on Thursday leaving much cooler temperatures across the region. This cold front may also kick off a couple of thunderstorms ahead of it as it moves through.
/issued 856 AM EDT Wed Apr 8 2020/ Dry stable conditions (via 12Z Raob data) under high pressure over the region will maintain pleasant warm dry weather across the entire forecast area the remainder of today. Morning temperatures in the upper 60s to lower 70s will climb into the mid to upper 80s over inland locations during the afternoon, with slightly cooler readings (lower 80s) along the coast due to the onshore flow.
The northeast part of our forecast area will continue to see the highest chances for rain and snow showers through the day, but all except southwest North Dakota could get in on the activity. Current surface analysis places low over Manitoba, with cold front dropping south into the upper Midwest/central plains.
Forcing ahead of tonight's cold front will provide the lift needed to organize a line of storms and tap into the ample CAPE values we have in place right now. This line will race to the east and south ahead of the cold front. Winds will be out of the southwest tomorrow and temperatures should feel substantially cooler.
Mainly clear skies and much cooler northwest winds are expected Thursday and Thursday night. Highs Thursday will generally be in the low to mid 60s.
218 PM MDT Wed Apr 8 2020 Colorado remains sandwiched under weak high pressure ridging today, while a closed low is parked over Southern California and an upper trof is sweeping through the northern high plains. Shallow cold front associated with the high plains trof is making some progress across the far northeast plains with gusty northeast winds up to 25 mph. Temperatures will be cooler on Thursday behind tonight's front and expected cloudiness. Closed upper level low will remain semi-stationary over the southwest U.
A surface cold front is still on track to move across the area late tonight and early Thursday. The front will usher in cooler temperatures and a chance for showers and a few thunderstorms during the day, as moisture is lifted atop the cooler airmass and lift increases with a weak disturbance lifting northeast from northern Mexico. It will be considerably cooler on Thursday, with temperatures by after falling in the upper 60s and lower 70s.
Temperatures will range in the low 70s overnight. The cold front is expected to move into southeast Texas and become a focus for strong to severe thunderstorms during the afternoon and into the evening hours.
227 PM EDT Wed Apr 8 2020 A strong cold front crosses tonight.
1224 PM EDT Wed Apr 8 2020 A cold front will cross the region tonight and bring one more round of showers and thunderstorms.
1257 PM CDT Wed Apr 8 2020 Area caught up in stagnant/baggy airflow as a cold front was hung up from northeast MN through south central MN, into eastern NE. This is expected to last until around 9 am before dissipating as a slightly drier push of air moves in from the west as the cold front pushes through. As the cold front moves through this morning, it will be reinforced by a fairly vigorous mid-level wave moving through the Northern Plains. Otherwise, breezy northwest winds kick in today, ushering in cooler/drier (compared to yesterday) airmass. Plan on highs in the lower 50s to lower 60s. High pressure builds in tonight for clearing and chilly conditions. A secondary mid-level trough and surface cold front drops into the area Thursday.
Cold front continues to advance south this afternoon with initial wind shift now making its way into northeast OK, but colder air lags significantly behind.
Chattanooga Airport, TN 61 69 44 60 39 / 80 10 0 0 10 Knoxville McGhee Tyson Airport, TN 59 66 41 56 37 / 80 20 0 0 0 Oak Ridge, TN 58 66 40 57 37 / 80 10 0 0 0 Tri Cities Airport, TN 55 64 37 53 32 / 80 30 0 0 0.
Also expect a wind shift over the next 24-hours, as the aforementioned cold front drops south. A strong trough approaching from the northwest, combined with high temperatures in the upper 80s, to support sufficient instability to bring thunderstorms to deep east Texas, north Louisiana, and south central Arkansas this afternoon. Upper-flow to become northwest tonight with a cold front forecast to move southeast across the region.
Farther north high temperatures reached the low 60s. Northerly winds have picked up behind a cold front that has passed through our area today. Temps will dip down to near or below freezing across much of the area. At the surface, expect high pressure to build into the area, but with an upper level system passing by to our northeast, expect another cold front and breezy conditions.
232 PM EDT Wed Apr 8 2020 Another round of showers and a few storms are expected late tonight into Thursday morning with a cold frontal passage. Periodic showers and cooler weather are forecast through the end of the week. Another round of showers is expected to arrive after midnight, along with a crossing cold front.
353 PM CDT Wed Apr 8 2020 Strongest boundary layer cold advection behind a cold front is over the southeast Nebraska and northeast Kansas area this afternoon and closer toe DDC, a broad area of 20 to 25 knot winds at 850MB are found area wide. 500 mb low rotating of the southern CA coast is still forecast to reach the southern and central high plains as an open trough by the end of the weekend, followed by a surge of very cold (relatively) air surging equatorward.
246 PM CDT Wed Apr 8 2020 A closed upper level low is spinning over central Saskatchewan/ Manitoba early this afternoon, creating a northwest flow aloft setup over North Dakota. At the surface, deepening high pressure over central Alberta is driving a strong pressure gradient force across the Northern Plains, resulting in windy conditions. A transitory ridge is forecast to pass through the Northern Plains Thursday night ahead of a clipper type system.
The increased mid to upper level flow is resulting in effective bulk shear values between 40-50 knots across the area, with the highest bulk shear values clipping interior portions of southeast MS and southwest/south central AL. A cold front will push southward into central portions of MS/AL overnight into early Thursday morning before pushing southward to near the coast by Thursday afternoon.
149 PM MDT Wed Apr 8 2020 Upper trough over central Canada will continue to be a big player in our weather during this period as upper flow will generally remain NW.
1110 AM MDT Wed Apr 8 2020 The GOES-R WV/IR imagery depicted a digging upper level trough into the northern CONUS, and slow-moving upper level low offshore of southern CA. The leading edge of cooler air extended from the NE/SD border thru northeast WY into west-central MT. Temperatures will be noticeably cooler today compared to the past few days with highs in the 50s.
610 PM MDT Wed Apr 8 2020 Brisk northwest flow aloft behind a cold front has produced breezy conditions across much of western SD this afternoon. As the front continues to push southward, pressure rises will cease and belt of strongest winds aloft will rotate eastward as upper trough pushes southeastward out of southern Saskatchewan and Manitoba.