Aikyam-Lab/Synoptic-Bench huggingface dataset:
1105 PM EST Wed Mar 8 2017 Scattered showers will continue through the overnight hours as a cold front swings through the North Country. Gusty winds will taper off this morning, then pick up again on Thursday behind a secondary cold front. Towards the weekend there is the potential for snow squalls to develop on Friday as an arctic cold front brings much colder temperatures to the region.
High pressure will dominate the area today, leading to dry conditions and above average high temperatures with readings in the upper 70s to lower 80s.
The NAM is warmer than the GFS by a few to several degrees, with the biggest differences over the far southeast plains.
1259 AM EST Thu Mar 9 2017 Dry high pressure moving into the forecast area from the west will be over the area late tonight and early Thursday. The high will move off the southeast coast Thursday afternoon. A cold front with little moisture will move through the area Friday.
This trough will act as a pseudo-dryline with teens and even single-digit dew point temperatures to its west and 40s and 50s dew points to its east. With temperatures expected to push well into the 80s this afternoon (will again trend toward or a bit above the high end of MOS) the result will be very low relative humidity west and the question of convective potential southeast. Surface flow becomes rather light tonight with direction eventually out of the north to northeast with weak low pressure progged from western Permian Basin to Far West Texas.
Expect cooler conditions today with a chilly northerly breeze. Afternoon highs will vary from the low 40s north to mid 50s south. Quiet and dry conditions will be seen across the area on Friday as high pressure moves through the upper Midwest.
334 AM CST Thu Mar 9 2017 Upper level troughing over southern Canada is expected to move southeastward into the upper Midwest by late tonight and help drag a backdoor cold front through western Kansas.
Winds will remain gusty at times over the higher terrain and with decent mixing by midday should see them increase across the plains as well. For tonight winds will quickly diminish across the plains but will remain gusty at times over the higher terrain. On Friday, we expect above normal temperatures in most areas but cooler boundary layer air will likely hold over the eastern plains through the day. Given that, in combination with potential Denver cyclone and mountain wave enhanced clouds, will adjust temps downward a few degrees in the lower elevations north and northeast of Denver.
An mild westerly flow aloft will remain in place across the region through the upcoming weekend, followed by strong high pressure aloft across the western states for the first half of the week. A low amplitude ridge over the western CONUS will maintain above normal temperatures and dry conditions through the end of the week.
High pressure will then slowly build across the area tonight.
Behind the front, northerly winds will usher in a rather chilly air mass as Canadian high pressure builds southeast into the Midwest. Early morning lows on Friday will drop into the lower 20s far north to the lower 30s south of I-70. Weak northwesterly flow becoming more amplified at the end of the week as another wave out of the Pacific NW dives into the low over the Hudson Bay. The colder airmass settles in over the Midwest, with Friday cooler.
A warm front noted late this evening over SE TX and extreme SW LA will continue to lift N overnight, with IFR cigs and patchy FG developing near this bndry as it nears the I-20 corridor of E TX/NW LA around 12Z. These low cigs and patchy FG should persist through much of the morning, before a slow improvement is expected by late morning/early afternoon as the warm front lifts N into SE OK/SW AR. Only some minor changes were made to the low temperature grid, mainly in extreme Southwest Arkansas where dry air combined with lack of clouds have allowed for rapid cooling.
Snow levels will stay low enough for the grades in Clearwater and Idaho County on the Camas Prairie to see several more hours of snow before temperatures warm to above freezing. With warmer air moving in from the south overnight, the change to rain will likely occur between midnight and 6 AM. The snow associated with this moisture will increase in intensity later this evening and cause significant snow fall in the higher terrain and some impactful snow in the valleys of western Montana. The higher terrain north central Idaho and west central Montana should still receive an impactful amount of snow by Friday.
As high pressure builds in tonight skies will clear.
1022 PM MST Wed Mar 8 2017 Temperatures across the region warmed quite a bit compared to yesterday with 50s across many of the higher valley locations and temps near to just a bit above 60 degrees in the lower valleys of southeast Utah and west-central and southwest Colorado. Expect a similar trend with warmer temperatures Thursday as a dry northwesterly flow remains overhead with high pressure across the western states. The flow will shift to a westerly direction on Friday as the ridge of high pressure flattens a bit due to some energy working into the Pacific Northwest.
818 PM PST Wed Mar 8 2017 High pressure and weak offshore flow will persist through Friday with much-above normal high temperatures.
Slow moving cold front beginning to sag into the northern portions of our CWFA.
As we go into early Friday morning, a cold front will work its way thorough the region from NE to SW. In the wake of the cold front, much cooler temperatures for the day on Friday and a stronger northeasterly to easterly will develop as the main CONUS synoptic pattern becomes more meridional as perturbations in the mean 700-500 hPa flow develop across Canada to help protrude the main upper level trough across the eastern CONUS equatorward.
The best chance will be across the higher terrain where topography will enhance low level convergence.
Some minor disturbances will pass over the area as a weak low pressure system moves eastward from the Baja coast. Focus for storms will be off the higher elevations around the Davis and Glass Mountains as the dryline will backed up against the higher terrain.
High pressure centered over the Canadian Plains will extend southeast into the region Friday through the weekend bringing unseasonably cold temperatures. Skies will clear out late tonight as the low level trough swings through. High pressure and cool airmass in place Friday night will lead to lows in the teens across most of the region.
414 AM EST Thu Mar 9 2017 Scattered showers will continue through the morning hours as a cold front swings through the North Country. Gusty winds will taper off, then pick up again on Thursday behind a secondary cold front. Towards the weekend there is the potential for snow squalls to develop on Friday as an arctic cold front brings much colder temperatures to the region. One to two inches of snow in the higher elevations is possible, but generally just a dusting to a couple tenths of an inch across the rest of the area. A weak low pressure system will pass well south of the region overnight.
Right now, feel the areas with the highest potential of snow would fall along a Huron to Pipestone, Marshall to Jackson. Have raised surface winds, and nudged low temperatures towards the cooler side of guidance. With that said, the higher winds and increasing cloud cover will keep temperatures from radiating out. Wind chills will approach 15 to 20 below across southwest Minnesota, especially along the Buffalo Ridge. In areas that don't have to fight the low level dry air, there will be a relatively efficient atmosphere in place with a deep dendritic layer resulting in SLR of 15-20:1.
At the surface, an initial cold front will move south much of the area Friday.
If you prefer warm, sunny spring days then enjoy today because it'll be the last for awhile across the lower Ohio Valley. A surface analysis early this morning showed high pressure centered over Tennessee while a cold front was draped across northern Illinois into southeast Michigan. But for today, plan on a sunny, seasonably warm day as our region stays ahead of the approaching cold front. Southwest breezes will allow readings to rise to the low 70s. Combined with steeper mid level lapse rates and lower freezing levels, any remaining elevated thunderstorm either associated with the front or with the decaying complex could produce some small hail.
It will drop southeast towards the Northern Plains behind an upper trough that will move across Wisconsin during the late afternoon and evening hours. The upper trough should produce lots of middle and high clouds but probably no snow due to the dry air currently in place. As the upper trough moves by, much colder air will move into the region on gusty northwest winds tonight.
403 AM EST Thu Mar 9 2017 Scattered showers will continue through the morning hours as a cold front swings through the North Country. Gusty winds will taper off, then pick up again on Thursday behind a secondary cold front. Towards the weekend there is the potential for snow squalls to develop on Friday as an arctic cold front brings much colder temperatures to the region. One to two inches of snow in the higher elevations is possible, but generally just a dusting to a couple tenths of an inch across the rest of the area. A weak low pressure system will pass well south of the region overnight.
322 AM CST Thu Mar 9 2017 Closed low over southern Hudson Bay with broad trough from Great Lakes to the northeast CONUS. Mostly zonal flow over the lower 48 with a few smaller waves moving across Pacific Northwest. Cooler, but dry conditions return to north central Nebraska on Friday. High temperatures Friday range from the low 50s across southwest Nebraska and the eastern Panhandle to the low 30s and upper 20s across north central Nebraska.
1248 AM EST Thu Mar 9 2017 High pressure will provide dry weather tonight. High pressure and dry conditions will build back into the area on Friday. The gradient will continue to relax overnight as weak high pressure tries to nose up into the region from the south. With a dry airmass in place, sky cover will consist of mid and high clouds forming along a westerly flow aloft, with lows ranging from the mid 30s north to the lower 40s south. This high will provide dry weather and colder than normal temperatures.
359 AM EST Thu Mar 9 2017 A ridge of high pressure will track across the region overnight into Thursday providing dry weather. An area of low pressure will develop across the central Plains on Thursday which will allow a stationary front to develop eastward across central Indiana. High temperatures today will range from the lower 40s across southern lower Michigan to the lower to mid 50s for areas south of Route 24. A relatively weak low pressure area will move east along the front draped just south of the area.
102 AM EST Thu Mar 9 2017 High pressure south of the area through Thursday. A cold front crosses early Friday. Due to warm air advection and lack of mixing due to the nighttime hours, wind gusts along the ridges of the northern mountains are remaining well below advisory criteria. The advisory continues across the higher ridges of the northern WV mountains, where nocturnal LLJ intensification may bring a resurgence in gusts or keep gusts going. Generally expecting 30-40mph gusts with some higher gusts possible across NW CWA and the ridges of the northern mountains. All models showing strongest 850mb winds cross the mountains overnight, so in coordination with neighboring WFOs extended the wind advisory for the northern mountain ridges through the night. A cold front will push through Thursday night.
1047 PM CST Wed Mar 8 2017 Subjective analysis of 12z upper-air data and current water vapor imagery indicate a broad mid-level trough from the vicinity of Hudson Bay south through the Great Lakes with a west-northwest flow regime present upstream across the western CONUS.
Midlevel disturbance and approaching cold front will trigger more showers and thunderstorms for the region as Gulf moisture surges north today.
1147 AM CST Mon Nov 7 2016 Mid and high level clouds along with the isolated light showers in the east this morning will continue to move east with the upper level low pressure trough axis. Surface and upper trof passing overhead this AM. A low level jet continues to result in gusty winds for the coteau, though these winds will continue to weaken as the trof passes through and the direction becomes more northwesterly. High pressure moves overhead for Tuesday.
AND THAT WILL MOVE EAST OUT OF OUR REGION AS A COLD FRONT PASSES THROUGH TUESDAY AFTERNOON AND NIGHT.
A cold front just offshore will bring rain to the coast and Olympics through Tuesday, but most of the interior will be dry and mild.
1252 PM EST Mon Nov 7 2016 High pressure will be situated east of the region with southerly flow developing for Monday and Tuesday. A cold front will move through Tuesday evening into Tuesday night which will bring the next chance of rain to the area. Prev Discussion-> Sharp mid level ridge to build into the region today. Highs to range from the upper 60s north to the lower 70s far south. Expect lows to range from the lower 40s far east to the upper 40s west, where clouds will be thickest. Associated weak surface cold front to push southeast through ILN/s fa late Tuesday afternoon/Tuesday evening. On the warm side of the front, expect highs on Tuesday to range from the lower 60s northwest to around 70 southeast.
That and with most areas starting about 10 degrees warmer than same time yesterday should push high temps to at least or a couple degrees warmer than yesterday. Overview: Sharp upper ridge axis bisects the Great Lakes this morning with high pressure spanning much of the eastern CONUS. Today: High pressure/dry air remain in control for one more day.
159 PM MST Mon Nov 7 2016 Dry conditions with well above normal temperatures can be expected today and Tuesday as strong high pressure builds over the desert southwest.
An upper low drifting over the Plains will interact with an upper trough crossing southern Canada and the Great Lakes to bring a cold front through southern WI late tonight. Highs will be in the lower to mid 50s.
Upper ridging will build back into the area today after being flattened down yesterday. Highs will be a little cooler today but still well above seasonal norms.
250 PM EST Mon Nov 7 2016 High pressure will crest over the area through Tuesday.
241 PM EST Mon Nov 7 2016 Short range models are in good agreement with high pressure over the deep south beginning to loose its grip as a series of upper disturbances approach from the west tonight.
135 PM EST Mon Nov 7 2016 High pressure will persist across the region into the middle of the week.
Backing flow at the surface in advance of the upstream trough will allow fog to reform downwind of Lake Erie during the first half of tonight. Watching Flint Vicinity closely, but dense fog having tough time coming off the higher terrain of northern Oakland county with light southerly winds providing downsloping component. High temperatures today really could end up anywhere between 55 to 70 degrees, ultimately dependent on when the fog mixes out, as pronounced upper level ridge and and very dry air aloft remains in place. Strong upper wave/trough along the far southern Saskatchewan/Manitoba border to dive southeast through the Central Great Lakes on Tuesday.
254 PM EST Mon Nov 7 2016 High pressure will prevail through Tuesday keeping the region dry.
244 PM CST Mon Nov 7 2016 The high pressure ridge just to the east is slowly losing ground to the advancing storm system to the west. connected by a cold front/sfc trof will move closer to the Midwest overnight, bringing an increasing cloud cover of mostly mid clouds at least early on. Cold front expected to be past the I-70 corridor by Tuesday evening as it makes its way southeastward toward the east coast.
Less clarity in both the maintenance and duration of this favorable flow before winds shift offshore lends lower confidence relative to last night, but will introduce a fog mention for the most favored locales southeast of the glacial ridge (particularly Monroe and Wayne counties). Otherwise, looking at temperature a touch warmer tonight, with readings bottoming out in the low to mid 40s. Southern stream wave will shear into the lead height falls of a stronger northern wave over the next 24 hours, with this lead energy and the attendant cold front working across southeast Michigan on Tuesday.
The persistent upper level ridge of high pressure will remain over the Mid South today which combined with continued dry conditions and light southeast surface winds should support above average temperatures. /issued 411 AM CST Mon Nov 7 2016/ Unsettled weather will return to the Midsouth on Tuesday, before dry high pressure settles back in. An upper level height ridge that extended north through the MS River valley yesterday will lift east to Appalachians today. The approach of a partially closed upper low over the plains will provide a brief break long spell of dry weather, though some areas of the Midsouth will still likely miss out on beneficial rainfall Tuesday. Low level moisture will increase late this afternoon through early Tuesday, in advance of a Tuesday evening cold frontal passage. By the weekend, a longwave trof over the northeast U.
228 PM CST Mon Nov 7 2016 An upper low has entered the Central Plains as of early Monday morning as depicted on water vapor imagery. A weak surface cold front currently positioned across central Nebraska will also provide additional ascent for precipitation early Tuesday morning as it crosses into central Missouri before sunrise. Weak cold air advection will bring afternoon highs down a couple of degrees Tuesday, generally reaching into the lower 60s for most areas. The marginally active pattern will then subside through the remainder of the week as upper ridging develops across the Rockies in response to a weak upper-level blocking pattern.
218 PM EST Mon Nov 7 2016 High pressure will crest over the area through Tuesday.
1209 PM EST Mon Nov 7 2016 High pressure centered across the northeast states will move southward and weaken as a cold front moves across the Great Lakes on Tuesday. High pressure will then settle across the central and southern Plains.
Issued by National Weather Service Milwaukee/Sullivan WI 1145 AM CST Mon Nov 7 2016 952 AM CST High pressure will remain in control over the region through the day Monday before departing later this evening. Some few to scattered mid clouds are expected later this afternoon as atmospheric moisture increases ahead of a cold front expected to arrive overnight and continue through the day Tuesday.
344 PM EST Mon Nov 7 2016 High pressure will build over the area through Tuesday.
1227 PM EST Mon Nov 7 2016 High pressure will maintain dry and warm conditions through Tuesday.
An upper ridge overhead will slowly shift east overnight and tomorrow, ahead of a frontal passage.
1204 PM EST Mon Nov 7 2016 High pressure will maintain dry and warm conditions through Tuesday.
300 PM MST Mon Nov 7 2016 The strong upper level ridge over the western U. The blocking ridge will remain in control of our weather through the rest of this week.
258 PM CST Mon Nov 7 2016 A cold front will make its way across the forecast area tonight. Expect highs in the low to mid 50s, which is still about 10 degrees above climatological normals.
High cloud shield over the area as a weak upper wave moves into a rebuilding ridge aloft. Ridging aloft will rapidly build over the region through Tuesday. A weak short wave trough will weaken today as it attempts to move into this developing ridge, spreading only mid and high clouds as it moves over the area.
325 PM EST Mon Nov 7 2016 A cold front will approach the area from then northwest tonight resulting in increasing cloudiness. Dry conditions will return to the area late Tuesday night, with cooler, more seasonable temperatures into late week. Short term period highlighted by precip chances Tuesday as cold front pushes southeast through the region. Attendant surface trof/cold front will enter our northwest early Tuesday morning and exit the area early Tuesday evening. previous forecast, however kept POP's capped at 70%, with the highest POP's across the southeast during the afternoon hours, where forcing is slightly better.
The upper high pressure ridge which has brought several days of quiet and mild weather to the Midwest is now slowly shifting east, allowing for broad scale warm advection over the Plains ahead of a progressive upper trof. This upper trof is split between two main energy centers, one over southern Canada, and the other over KS/OK. With the broad upper trof approaching this morning, there is a clear signal we will see a transition from clear to cloud skies from west to east during the day today. Temperatures look to be cooler than this last week, with highs this weekend in the low to mid 50s. A cold front will move through the area late tonight into Tuesday morning accompanied by light showers.
A gloomy Monday across much of SW Kansas through this afternoon, as upper trough slowly inches its way into central Kansas. Sky will clear progressively from NW to SE as upper trough departs. By mid week an upper low is forecast to develop over the southern Plains as an upper level ridge axis builds into the Northern and Central Plains. At the surface a cool dome of high pressure will begin to slowly build across western Kansas mid week.
1115 AM CST Mon Nov 7 2016 Upper trough moving into the High Plains this morning has kicked off an area of showers over central and eastern KS. After this initial band of showers moves through most activity will be rather spotty for the rest of the afternoon thanks to a lack of organized forcing within the upper trough axis. Better chances for rain will develop from southeast KS into central MO after dark as an upper jet develops ahead of the upper trough axis swinging through.
300 PM EST Mon Nov 7 2016 High pressure remains in control of the region through Election Day.
138 PM EST Mon Nov 7 2016 Dry high pressure will will persist over the area through Tuesday.
1007 AM MST Mon Nov 7 2016 09z surface analysis showed cold front working it's way into southeast WY/western NE, but not quite through south central SD. Front will exit the CWA this morning as northern stream upper trough moves across the Dakotas. Temperatures will be noticeably cooler, but still 10F above normal. Temperatures will be similar to today in the east, but warmer over WY given warmer 850-700mb thermal profiles. Western CONUS upper ridge rebuilds over the northern plains by midweek, with dry conditions and very mild temperatures continuing.
158 PM MST Mon Nov 7 2016 Dry conditions with well above normal temperatures can be expected today and Tuesday as strong high pressure builds over the desert southwest.
249 PM EST Mon Nov 7 2016 High pressure will allow for one more dry and warm day on Tuesday.
A moderate N to NE wind will occur behind a backdoor cold front across east central and northeast NM. A weak backdoor cold front will drop into eastern New Mexico today. Strong high pressure will build over the Great Basin Tuesday, keeping storms well north of New Mexico through the work week. As a strong upper level ridge of high pressure builds over the Great Basin, northerly flow on the east side of the high will send a weak backdoor cold front s/sw through eastern NM today and west of the central mountain chain tonight.
314 PM CST Mon Nov 7 2016 (Tonight and Tuesday) Main concerns this afternoon into tomorrow are storms this afternoon and evening, along with cooler temperatures tomorrow and possible additional showers. A cold front will move into the area overnight tonight. On Tuesday, temperatures will be much cooler behind the cold front and under mostly cloudy skies, with highs only expected to warm into the 60s as opposed to the 70s to lower 80s we're seeing this afternoon. In addition, with the upper level low still near/over the area, we could see additional showers develop across much of the area, so have kept at least a slight chance of showers and thunderstorms going through the day Tuesday.