Aikyam-Lab/Synoptic-Bench huggingface dataset:
Highs in general in the low 90s to near 95 west. Cold front moves through Wednesday night with a moderate northerly flow behind it.
1259 PM EST Tue Feb 7 2017 A strengthening low pressure system will move across Lower Michigan and into southern Ontario this evening, with a strong frontal boundary trailing that will usher in much colder air overnight into Wednesday.
111 PM EST Tue Feb 7 2017 Aviation A low pressure system will deepen as it tracks through the region today. Another low pressure system tracks up the Ohio Valley on Wednesday and could clip Southern Lower Michigan with some light snow.
235 PM CST Tue Feb 7 2017 In the near term, the main focus is on the cold front that extended from kmvn to 20 mi west of kpof at 19z. The 17z rap model soundings indicated the leading edge of dry air will remain just ahead of the front as it reaches the Lower Ohio Valley early this evening. Highs Wed will vary widely, from the lower 40s along I-64 to the mid 50s along the Tennessee border.
330 PM EST Tue Feb 7 2017 Low pressure will move rapidly into Ontario tonight with a cold front sweeping across the region to bring a brief return to more winter like conditions. Temperatures will fall tonight and recover little on Wednesday with highs around freezing.
The short wave trough being the catalyst for the storms will move east of the area this morning and a ridge will build over Arkansas this afternoon. An upper ridge builds over the western U. This ridge will move east through the end of the week and will be over the eastern U.
A cold front will move across the area Wednesday afternoon bringing colder air back into the region.
However, upstream the cold front was still located over IL, clouds are thin or becoming scattered, and instability is building again. Looking at satellite, some cu are starting to become enhanced very close to the cold front. For Wed, expect a mainly dry morning with another round of showers and possibly a rumble of thunder tomorrow afternoon courtesy of an upper level trough.
Satellite and obs indicate widespread freezing fog across much of the CWA. As colder air continues to push into the northern plains with breezy northwest winds, freezing fog will dissipate this morning. Models are in good agreement on the location of the higher amounts being across the southern Hills into southwestern SD. However, there is some discrepancy on amounts; the ECM is the lowest with 1-2 inches, the GFS and SREF are similar with 2-4, with the NAM having up to 6 inches.
Chattanooga Airport, TN 63 52 70 41 / 80 60 40 60 Knoxville McGhee Tyson Airport, TN 64 52 69 41 / 80 70 40 70 Oak Ridge, TN 63 52 68 40 / 80 60 40 60 Tri Cities Airport, TN 67 48 64 38 / 60 70 40 70.
Temperatures will be warmer than normal. Temperatures will be warmer than normal.
For tonight, the drier air will lead to somewhat of a cooler night with lows reaching the 50s to near 60. The higher values will be across the Coastal Plains where moisture values will remain a bit elevated. A cold front is projected to move through the region tomorrow evening, turning winds back to the north and ushering in slightly cooler temperatures for the overnight hours than previous days.
312 PM EST Tue Feb 7 2017 Low pressure will track northwest of the area late tonight into Wednesday. High pressure will return Wednesday night.
250 PM EST Tue Feb 7 2017 An upper level trough will continue to move into the deep south providing sufficient divergence aloft this afternoon through the evening hours. Within the mid-levels, have noticed a series of impulses progged to round the trough helping to initiate lift with the axis pivoting through the region by around midnight. the high resolution models were trying to show linear segments with these thunderstorms and you can actually see this feature coming out of TN, moving SE. The next round of showers/thunderstorms will approach Wednesday afternoon ahead of the cold front.
211 PM CST Tue Feb 7 2017 Cold front which lies from northeast Colorado into southeast Kansas should get a push south in association with a short wave trough moving east southeast from the Rockies into the plains on Wednesday. This cold front may have a little better push with it than the models think.
/issued 330 AM CST Tue Feb 7 2017/ Record high temperatures could be broken today across the Ark-La- Tex region due to compressional warming ahead of another short wave trough. Expect temperatures in the low 80s today which for many locations could beat or set record highs for previous years today. Late this evening all showers will be east of the area with clearing skies and overnight temperatures in the low 50s to mid 40s. Wednesday, winds turn southerly once again ahead of the next approaching cold front moving out of the Southern Plains. Temperatures ahead of the front will soar due to compressional warming with daytime temperatures in the low 80s to upper 70s across the region.
Regional obs this morning showing a cold front situated from about cntrl MN to n-cntrl Neb to nern WY.
Southern and low lying areas, especially along the I-10 corridor and Llano and San Saba River Valleys, will see lower winds and cooler into the mid 40s. A cold front will move into the Big Country late Wednesday morning and along the I-10 corridor mid afternoon. 04 (Wednesday night through next Tuesday) Winds will already be turning around to the east/southeast by Wednesday night, following the cold front that will move through during the day.
Cold front moves through the area tomorrow, but column continues to look too dry for precipitation. The fog threat will end Wednesday night as drier air sweeps in behind the cold front.
Some areas to the southwest will be warmer tomorrow while a cooldown is expected across the OK Panhandle and eastern TX Panhandle.
A cold front is expected to push off to the east by early this Another disturbance is expected to move through the area Wednesday afternoon and evening. Surface cold front currently moving into the far northwest zones. Model data suggest main item of interest during this period will be a short wave trough that is expected to move over the area Wednesday afternoon and evening. Will go with PoPs from Wednesday morning through Wednesday night to cover this feature, with the highest PoPs over about the northern half of the forecast area Wednesday afternoon, coinciding with best lift.
Have cooled temps a bit from yesterday, trending mainly twd a compromise of MOS, tho did trend warmer further south where thermal profiles are a bit warmer. As for highs, colder air to filter in with temps ranging from the low 30s far north to the low 50s far south.
1003 AM CST Tue Feb 7 2017 Went ahead and cancelled the advisory for the far northwest (Towner, Cavalier, Benson, and Ramsey counties) as conditions continue to quickly improve as the system pulls away and high pressure is beginning to nose into the western part of the state. Snowfall rates will be up to an inch an hour however with the quick moving nature of the system will generally see another 1 to 3 inches with the higher values along and north of HWY 2 line, in the area of the ongoing winter weather advisory.
Rain continues to shift NE with the warm front across the northern zones. Forecast gusts were increased over the ridges as the low level jet moves across the area and momentum transfer should allow for strong wind gusts to occur while much of that area should be mostly cleared from rain until the cold front arrives this evening. Therefore, have a low-end wind advisory issued for the three ridge counties. Cold front should sweep the remaining rain to the east overnight but temperatures should still remain above normal values.
227 PM EST Tue Feb 7 2017 Low pressure passing well to the north will drag a cold front across the region overnight.
/issued 345 AM CST Tue Feb 7 2017/ Upper trough moving across Central plains this morning as high pressure builds in from the west.
At the time of this writing, a NW-SE oriented warm front associated with a system over the plains had just lifted to the north and east of our CWA. As the morning wears on, the aforementioned system will push/pull a cold front toward the region that is forecast to reach the western sections of our CWA around midday and clear the southeast sections around 9 PM. High pressure will then begin to overspread the region bringing in cooler and drier air that will prevail through the end of the period.
/issued 1126 AM CST Tue Feb 7 2017/ Upper trough axis is moving across the area and chances for convection are quickly diminishing. /issued 330 AM CST Tue Feb 7 2017/ Record high temperatures could be broken today across the Ark-La- Tex region due to compressional warming ahead of another short wave trough. Expect temperatures in the low 80s today which for many locations could beat or set record highs for previous years today. Late this evening all showers will be east of the area with clearing skies and overnight temperatures in the low 50s to mid 40s. Wednesday, winds turn southerly once again ahead of the next approaching cold front moving out of the Southern Plains. Temperatures ahead of the front will soar due to compressional warming with daytime temperatures in the low 80s to upper 70s across the region.
Some moisture will linger behind the cold front along the Cumberland Plateau tomorrow night.
Fog will linger into the mid morning, with the low cloud deck lifting from all terminals by the late morning. Less cloud cover tonight and drier air will allow low temperatures to fall a few degrees cooler and will bring more areas of fog to the region overnight.
A cold front currently across central Kansas will move through the region later tonight into Wednesday.
343 PM CST Tue Feb 7 2017 Record-breaking heat blanketed the region this afternoon, with temperatures as of 3 PM CST in the low to mid 80s. Along the coast, warm, moist air flowing over the cooler shelf waters will result in another night of sea fog along the coast and across the coastal waters with sea fog possibly developing as early as late this afternoon. Have trended temperatures warmer than MOS guidance as a result with several locations likely breaking records again tomorrow. Elevated fire weather conditions will likely exist again tomorrow (roughly north of the Highway 59 corridor) as afternoon relative humidities fall below 35 percent and winds increase into the 10 to 15 MPH range and caution is recommended for anyone attempting to engage in outdoor burning.
Went ahead and cancelled the advisory for the far northwest (Towner, Cavalier, Benson, and Ramsey counties) as conditions continue to quickly improve as the system pulls away and high pressure is beginning to nose into the western part of the state. Snowfall rates will be up to an inch an hour however with the quick moving nature of the system will generally see another 1 to 3 inches with the higher values along and north of HWY 2 line, in the area of the ongoing winter weather advisory.
Gradient will be tight from the 'no snow' area to the higher snowfall amounts across northeast Nebraska.
254 PM CST Tue Feb 7 2017 Cold front this afternoon has progressed through the northern half of Kansas, entering southeast Kansas at the current hour. Persistent cold air advection behind the boundary has kept the low levels cooler and ultimately held on to the stratus deck through much of the day. Readings generally stretch from the 30s over far northern KS, to the lower 50s over east central KS. Low clouds increase once again over the area with the caa keeping highs much cooler in the 30s.
A cold front will swing through early Wednesday, ushering in colder air and scattered rain and snow showers. Cold front sweeps through late tonight beginning a return to more seasonable air.
A cold front will swing through early Wednesday, ushering in colder air and scattered rain and snow showers. Cold front sweeps through late tonight beginning a return to more seasonable air. A cold front crosses the area early Wednesday in the wake of a low tracking north into Quebec. Temperatures will range from the upper 30s to upper 40s early in the day with temperatures falling to the low 30s to low 40s range by late day. There will be some scattered rain/snow showers persisting as upper disturbances round the base of upper trough but not expecting any all day precip for anyone.
Rain continues to shift NE with the warm front across the northern zones. Forecast gusts were increased over the ridges as the low level jet moves across the area and momentum transfer should allow for strong wind gusts to occur while much of that area should be mostly cleared from rain until the cold front arrives this evening. Therefore, have a low-end wind advisory issued for the three ridge counties.
High temperatures were able to reach the low 80s along the Keys with dew points in the low 70s. A high pressure over the central Atlantic today will continue to move east, leaving the Florida Keys under a weak pressure gradient environment. 50 inches through most of the forecast period thanks to the ridge over the Keys. A developing area of low pressure will swing across the southeast United States on Wednesday evening and situate itself over the mid-atlantic states by late Wednesday night. An extended trough and cold front will then move southeast over the southeast U.
349 PM CST Tue Feb 7 2017 Another cold front will move through the area late tonight and Wednesday morning taking the edge of the temperatures for a couple of days.
As the low moves east next few hours increasing winds will bring improvement in visibility from west to east. Some of this improvement has already begun in the far southern cwa southwest of the low with increasing pressure gradient and winds. Temps and dew points south of the warm front and low have climbed in the lower to middle 50s. Outside of the storms, abundant low level moisture and convergence ahead of the low has led to widespread dense fog. Main cold front extends roughly from s MN to central NE early this am, with temps plummeting into the teens and single digits over the Dakotas into n MN. Dry with windy conditions this evening as the arctic front moves into the Ohio Valley and high pressure builds into the Midwest.
Other than some patchy drizzle or freezing drizzle, especially in west central Wisconsin, precipitation chances will remain low through mid morning.
Southwest winds will veer to more northwesterly this morning as cold front moves through.
244 PM CST Tue Feb 7 2017 WV imagery shows yesterday's the upper trough has entered the MS Valley, leaving dry, NW flow aloft over West Texas and Southeast New Mexico.
A cold front will push through the area Wednesday night. By late in the night much colder air will be pushing in, changing any lingering rain showers to snow showers in at least in the higher elevations late.
then northwest and occasionally gusty late morning as a weak cold front moves in. (Wednesday through Tuesday) Weak upper level high pressure ridge will continue across the Southern Plains for the remainder of the week, keeping temperatures above normal.
137 PM EST Tue Feb 7 2017 A strengthening low pressure system will move across Lower Michigan and into southern Ontario this evening, with a strong frontal boundary trailing that will usher in much colder air overnight into Wednesday.
Very windy conditons persist across the CWA as a cold trough moves through the Great Basin. A cold front has entered NW Arizona, with the trough axis still over central Nevada. A cool, clear and breezy day follows this trough on Monday, with warming for the rest of the week as high pressure rebuilds over the western United States.
602 PM EST Sun Mar 5 2017 High pressure will continue to move off to the east this evening into tonight.
542 PM EST Sun Mar 5 2017 Clouds will increase tonight ahead of an approaching cold front.
Expect a lull in rain chances overnight as this system pulls away and a deeper upper low digs into the Northern Plains. Rain chances will increase again from west to east during the day Monday ahead of the upper low.
Dense cloud cover will result in temperatures remaining nearly steady in the lower to mid 50s from now and through the overnight hours.
A strong cold front will exit the region later this evening. Snow, much colder temperatures, and gusty winds will occur with the cold front.
Winds will be brisk by midday Monday as an upper trough moves through the area causing winds to strengthen. /issued 351 PM CST Sun Mar 5 2017/ (Tonight and Monday) An upper trough will move east across the Rockies tonight and out across the central and northern Plains on Monday. Low level thermal ridge will be rather strong (850 mb temps 17 to 20C) and will result in temperatures in the lower to middle 80s for afternoon highs.
632 PM EST Sun Mar 5 2017 High pressure will continue to move off to the east this evening into tonight.
Cold front moving into the area during the evening and overnight will provide the most widespread activity. Questions remain as to whether surface-based convection can initiate well ahead of the cold front and dry line before sunset.
Would also not be surprised to see a few 30-40 MPH wind gusts as heavier downpours are able to transport winds associated with the low level jet to the surface.
As a result, some minor adjustments were made to the PoPs to reflect the lower chances for rainfall across SW LA. Activity will get going again on Monday, and have more of a convective nature to it, as left over shear axis aloft, and low level theta-e ridge, will combine with high moisture profiles (PWAT over 1.
1054 PM EST Sun Mar 5 2017 High pressure along the coast will continue ridging into the area overnight then move offshore Monday afternoon.
Later this evening and overnight, the region will experience less influence from the previously mentioned wave and more influence from a stronger mid-level trough advancing across the western CONUS. A south-southwesterly low-level jet over the central Plains will strengthen rapidly after Midnight in response to the approaching trough. Rain chances will increase tonight as the moisture feed from the Gulf deepens, and a cold front trailing southward from the low approaches.
Strong high pressure and drier air in the lower levels, however, will preclude any measurable precip overnight with this feature.
Will allow for a more sustained split in the east, given the lower POPs and thinner cloud cover. Afternoon surface analysis shows warm front has lifted north of the region this afternoon, and this is also seen on the model theta-e mag. Overall given the lower chances felt like scattered POPs seemed best based on the low chances of measuring and higher cloud bases will play a role as well. Some showers are possible ahead of the boundary, as upper level waves ride up along base of the trough.
Strong southerly winds of 15-30 mph and gusts of 25-40 mph prevailed this afternoon across central IL and will continue Monday ahead of an approaching cold front. Weakening 1038 mb high pressure over central Quebec and ridging southward toward eastern VA/NC.
940 PM EST Sun Mar 5 2017 High pressure will build across the region overnight through Monday.
Latest upper analysis shows the upper ridge has moved off to the eastern third of the CONUS as the Pacific upper trough moves inland over the Pacific Northwest. That system will rapidly cross the forecast area on Monday followed by strong northwesterly winds as cooler air flow into the region.
208 PM PST Sun Mar 5 2017 Cooler, unsettled weather this weekend into Monday with low snow levels and significant snowfall.
Despite light radar returns, layer of dry air remains in the low levels, so most locations will remain dry overnight as any light precipitation falling from mid- level deck largely evaporates. Medium range models continue to weaken the short associated with this precipitation as it moves east/northeast up the backside of the upper ridge and the chances that it will be able to produce any perceptible precipitation at the surface across north or central Georgia remains very low.
/Issued 351 PM CST Sun Mar 5 2017/ Moist southerly flow in the lower levels resulting in improved fire weather conditions today despite win speeds in the 15 to 30 mph range, as humidity has remained above 70%. Moist airmass remains in place Monday as Pacific trough moves closer and pushes a cold front through the Central Plains during the afternoon. Veered flow ahead of the dry line and only modest large scale ascent suggests that the potential for storms to develop along fry line are low Monday afternoon, however several recent model solutions show signal of developing more discrete development well ahead of dry line over eastern OK/western AR in strong warm advection regime with cooling aloft as the upper trough passes north, which would likely be supercells in a highly sheared environment.
710 PM PST Sun Mar 5 2017 The weather will remain active, as a cold upper level trough begins to shift into the region.
544 PM CST Sun Mar 5 2017 Strong southerly winds of 15-30 mph and gusts of 25-40 mph prevailed this afternoon across central IL and will continue Monday ahead of an approaching cold front. Weakening 1038 mb high pressure over central Quebec and ridging southward toward eastern VA/NC.
515 PM CST Sun Mar 5 2017 Aloft: SW flow will cont overhead thru tomorrow as a deep (-2 sigma) trof progresses thru the Wrn USA. This trof will be just W of the fcst area (FA) at 00Z/Tue. This low was along a strong cool front making its way thru the Wrn USA. The low will deepen further as it heads across the Dakota's into Srn Manitoba tomorrow. Aloft: Low amplitude WNW flow prevails thru next Sun in the wake of the trof that moves thru Mon eve. but overall average warmer than normal.
As the upper trof continues to move off to the E/NE, we should see things taper off by this evening. Weak ridging in the wake of this system will give us a break overnight, but the return of strong SE winds toward sunrise/early tomorrow could produce some isolated to widely scattered WAA-type showers. Rain chances to increase once again late Mon night/early Tues morning as the next cold front moves in from the Southern Plains into SE TX. While previous model runs have backed off on the front moving completely through SE TX, have favored a FROPA given the upper pattern (flat upper ridge).
631 PM EST Sun Mar 5 2017 High pressure will build across the region tonight through Monday.
Cold upper trough now covers all the northwestern states. One prominent embedded short wave trough was along the Oregon Coast. A couple inches new snow expected in mountain areas, but even the lowest valleys can expect at least a dusting of snow Monday or Monday evening.
855 PM EST Sun Mar 5 2017 High pressure will move offshore Monday.
Strong winds will continue into this evening as a low pressure system moves across Nevada. A dry northwest flow will bring in much cooler temperatures Monday and much lighter winds can be expected. A strong low pressure system over California and approaching cold front were bringing widespread strong winds to the area. We still have several hours of potential for winds to increase so the high wind warning remains in effect. The upper low will move east across Nevada tonight bringing a chance of rain and snow showers to areas mainly north of Las Vegas during the evening hours. Winds look to decrease significantly after midnight as winds start to become northerly behind the exiting upper low. A dry northwest flow will follow behind the exiting upper low Monday with much cooler temperatures and much lighter winds.
922 PM EST Sun Mar 5 2017 High pressure will continue to move off to the east this evening into tonight.
839 PM EST Sun Mar 5 2017 Clouds will increase tonight ahead of an approaching cold front.
354 PM PST Sun Mar 5 2017 A cold front will move through Los Angeles County this afternoon bringing light rain and mountain snow to the area this afternoon along with much cooler temperatures and breezy conditions.