Aikyam-Lab/Synoptic-Bench huggingface dataset:
At 6 PM CDT a region of high pressure extended from southeast Saskatchewan through eastern South Dakota. A developing lee side low pressure area in Montana will bring increasing southeast winds to western North Dakota Saturday. High pressure will slowly slide off to the east tomorrow allowing for southerly return flow. This will bring slightly warmer temperatures in for Saturday and with an increase in the pressure gradient an increase in wind speeds as well.
655 PM PDT FRI AUG 5 2016 The evening zephyr kicked up a bit stronger this evening with gusts 40-50 mph on area ridges around the Tahoe Basin and Sierra Front with widespread surface winds 15-25 mph with gusts 35 mph.
429 AM CST Tue Feb 21 2017 Today through tonight, An upper low in the process of closing off is centered roughly over the ArkLaTex region early this morning and is pushing slowly east. Otherwise, temperatures will be cooler today than in recent days largely because of the clouds/rain. Rain chances will diminish tonight as the closed low shifts southeast of the area.
Light rain will continue mainly along and east of US Highway 65 this morning as an upper level low moves south of the area. Have kept some lingering showers across south central missouri into the afternoon closer to the upper low. Clouds will be slow to clear Today and temps will be warmer in western Missouri versus south central Missouri.
942 AM EST Tue Feb 21 2017 High pressure is centered over northern New England. Cooler air will seep south into the Mid Atlantic today. High pressure will be located off the southeast coast of the United States late in the week. A cold front will pass through the area this weekend. High pressure will move off the New England coast today and an onshore flow will allow for cooler conditions compared to recent days.
Highs from 73 to 77 degrees, with the warmer readings across southwest and central Nebraska.
The day ahead will be a warm one as a low level thermal ridge works in from the Dakotas during the day along with southwest low level winds developing. This will push the low clouds off to the east this morning along with the fog diminishing by 9 am. Due to this, went well above mix-down and to the high end of bias corrected data. This yields highs in the lower 60s around the Twin Cities as well as on north along the I-35 corridor with around 60 in west central WI.
605 AM EST Tue Feb 21 2017 High pressure cresting over the area this morning will move to the east this afternoon.
Attention will remain focused upstream for predicted evolution of energetic system in the process of pinching off into a closed low pressure area over the ern Gulf of Mex over the next 24H. (prev disc) A hi pres ridge spanning the ern seaboard will drift east into the W Atlc as a broad storm system dvlps over the lwr MS Valley/NW GOMex. The ridge axis will have the primary impact on the lcl Atlc waters. However, as the storm system pushes into the Deep South/NE GOMex, it will interact with the wrn flank of the ridge and tighten the lcl pgrad.
Westerly flow will aid in mixing as well, with mixed temperatures from the James valley east in the low/mid 60s and across central South Dakota topping out in the upper 60s. Temperatures overnight will again remain above freezing, and with warm ground temps - shower activity will have little impact. Low pressure moves across the Western Lakes region Wednesday, with weak cold advection in the low levels. Thankfully temperatures are still expected above freezing Wednesday.
Main frontal boundary has been slow to make it into SE KS early this morning, with surface dewpoints in the lower 40s leading to areas of dense fog for SE KS. This will lead to slightly cooler temps for Thu for portions of Central KS, with temps south of the stalled frontal boundary remaining well above normal. The ECMWF and GFS differ on the path of this low pressure area, with both models showing the stalled frontal boundary in Central KS pushing gradually back into Neb as a warm front. ECMWF seems to be the most consistent with the lows path across srn KS, but the GFS is further north with its path across nrn KS.
Intermittent MVFR to IFR visibilities/ceilings this morning along with isolated SHRA developing with upper low over SE TX. Sharp upper trof currently advancing east across east Texas in the process of transitioning into a closed low. Cooler temps on tap through the remainder of the workweek but still remaining above the norm. Deep northerly flow will overspread the area as the day progresses between low advancing east and southeast of the area and modest ridging approaching through the south plains.
/issued 343 AM CST Tue Feb 21 2017/ Near record high temperatures are expected the next couple of days as an upper ridge builds over west Texas and southeastern New Mexico in the wake of a departing low pressure system currently over east Texas.
A cold front tonight will usher in a period of cold unsettled weather lasting through the end of the week.
948 AM EST Tue Feb 21 2017 High pressure will crest over the region early today before shifting offshore. A warm front will push east through the region tonight. Low pressure moving east through southern Canada will drive a cold front toward the region late Wednesday and Wednesday night.
Dry with a northwest flow today behind the departing upper level low and surface cold front this morning. Continued warm and dry tomorrow as weak southwest flow develops and a weak ridge aloft moves overhead. Highs even warmer Wednesday, with 80s for the entire CWA and pushing 90 along the Rio Grande.
Chattanooga Airport, TN 68 55 68 54 / 60 70 50 10 Knoxville McGhee Tyson Airport, TN 69 53 65 52 / 30 70 60 10 Oak Ridge, TN 71 53 66 53 / 30 70 60 10 Tri Cities Airport, TN 70 48 63 49 / 10 70 80 10.
Temps today will be well above average, with highs in the 70s acrs the southeast plains and in the 50s to lower 60s in the high valley areas. Tonight there will once again be gusty winds over the mtns and the lower east slopes, with some gusts of 50-60 mph. Brisk west to southwest flow aloft will continue across the region on Wed, producing isolated to low-end scattered pops for the higher terrain, and gusty west winds for the adjacent plains.
Dry with VFR conditions through the day, the increasing clouds with potential for SHRA developing vcnty all sites after 22/06Z as low pressure system approaches from the Gulf of Mexico. 500MB ridge over South Florida remains in control today providing another warm and dry day across the area. Weather pattern begins to change as high begins to move east Tuesday evening ahead a of a strong low pressure system reaching S FL region. Currently, low pressure over the central plains will travel east into the Mississippi river valley today and continue moving east into the northeast Gulf coast into Wednesday.
Today will be dry but cloudy as high pressure shifts offshore ahead of an approaching system.
As can be seen on water vapor imagery the center of the upper low is just to the west over southwest LA this morning. Lapse rates will steepen a bit today as the cold pool center of the upper low passes overhead. /issued 658 AM CST Tue Feb 21 2017/ Fairly significant update to the current forecast to include scattered thunderstorms with the potential for small hail as the cold core upper low begins to rotate through the area after noon today.
The rain is associated with an upper level low pressure system that will track eastward from East Texas into Louisiana by late this afternoon. Although, can't rule out a shower developing at any given location at any given time this afternoon due to the proximity of the upper level low. Temperatures will be cooler today with highs remaining in the 60s due to the shower activity and cloud cover. The upper level low will begin to sink southeastward tonight and will be located across the Gulf of Mexico by Wednesday morning. Upper ridging will begin to occur on the back side of the departing upper low and surface winds will turn back around to the south.
An upper level low will continue to become detached from the main flow through the mid-week. A weak cold front will cross over northwestern Missouri today before stalling near central Missouri. With ample sunshine and a return of warm advection in the wake of the exiting storm system, temperatures will rebound slightly from yesterday, climbing into the lower 70s.
Upper level low to move across the deep south today. a likelihood of rain shower activity is in the fcst, but due to weakening, rainfall amounts will be on the low side. In fact, look for the heavier rainfall to shift southward where the upper low resides. Despite the cloudiness, we will still see high temps reach into the lower 70s on Wed and Thu.
The upper low across the ARKLATEX is very slowly shifting eastward, so the precip shield may be delayed by a few hours. Although max temperatures will be a little cooler today and Wednesday than they have been over the last few days, max temps will still be above normal.
911 AM EST Tue Feb 21 2017 High pressure cresting over the area this morning will move to the east this afternoon.
1029 AM EST Tue Feb 21 2017 Showers will be possible today into tonight along a weak cold front. High pressure is forecast to provide mainly dry weather on Wednesday.
This system will bring strong winds to the southern Great Basin zones Tuesday followed by scattered showers and cooler temperatures Wednesday.
The upper level low that has been controlling our weather for the past few days is finally kicking out of Texas early this morning. 500mb trough now off the coast with surface boundary pushing through the region. Min temps tonight should fall into the low to mid 50s across the area. Very warm conditions expected on Wednesday with highs into the lower 90s west with mid and upper 80s elsewhere.
Forecast sounding suggests subsidence mixing with dry air aloft will diminish the low clouds today, so will continue to go with the current forecast of returning sunshine today.
950 AM CST Tue Feb 21 2017 Latest water vapor imagery showing the upper level low quite clearly over the Arklatex at this time. (ISSUED 521 AM CST Tue Feb 21 2017 ) Upper low moving to the south of the forecast area should promote MVFR ceilings through much of this period. Water vapor imagery reveals center of closed low over southeast Texas, moving eastward.
The result will be a period of light snow for valley floors followed by a changeover to rain later in the morning, one exception will be the lower elevations of northwest Montana which may remain snow. Precipitation will become showery again on Tuesday night with a cold front passage dropping snow levels to valley floors once again.
Water vapor imagery shows upper low moving past the area with a few showers to the east and northeast of KIAH to KUTS. Isolated thunderstorms were developing in the vicinity of the upper low over NE Texas. /ISSUED 332 AM CST Tue Feb 21 2017/ An upper low will move across the Red River Valley into the lower Mississippi Valley today with an upper trough moving over SE Texas this morning. An upper ridge will then develop over the state later this afternoon and tonight.
504 AM CST Tue Feb 21 2017 The morning water vapor imagery depicts that the elongated upper trough extending S from MO into Wrn AR to along the TX/LA line has begun to close off over extreme Ern TX, with drier air aloft continuing to entrain E into Ern LA. Should see some warming occur by afternoon over SE OK/portions of E TX as some of the cigs may scatter out, with these cigs possibly filling back in over portions of these areas as the parent upper low continues to drop SSE into SE LA/Srn MS. The cloud cover may linger a bit longer though over Scntrl AR/Ncntrl LA resulting in slightly cooler temps.
/EC/ Today through tonight, An upper low in the process of closing off is centered roughly over the ArkLaTex region early this morning and is pushing slowly east. Otherwise, temperatures will be cooler today than in recent days largely because of the clouds/rain. Rain chances will diminish tonight as the closed low shifts southeast of the area.
647 AM EST Tue Feb 21 2017 Showers will be possible today into tonight along a weak cold front. High pressure is forecast to provide mainly dry weather on Wednesday.
Winds have continued to decrease overnight in the valley and have cancelled the wind advisory, but strong gusty southwesterly winds continue in the higher elevations of the northern Sierra Nevada and southern Cascade Range.
625 AM EST Tue Feb 21 2017 A weakening cold front will move into our area today, likely causing some showers, mainly northwest portions and mainly this morning. Dry conditions and very warm temperatures are expected Wednesday as southwest winds strengthen ahead of an approaching weak cold front.
Temperatures are in the lower to mid 70s. In the low levels of the atmosphere, a large area of high pressure over the northeast United States will build southward down the east coast of Florida this afternoon. In the mid to upper levels of the atmosphere, a ridge of high pressure will be located along the east coast of the United States today.
Although max temperatures will be a little cooler today and Wednesday than they have been over the last few days, max temps will still be above normal.
Mostly cloudy skies for today due to high/mid clouds spreading over the area ahead of upper low.
Broad upper low near the TX/LA border early this morning is progged to shift east then southeast across lower MS. At the surface a broad area of low pressure was located mostly over Arkansas this morning is progged to shift southeast and deepen slightly over much of MS and lower AL through this evening. Latest model soundings continue to show weak surface based instability and shear in the lowest 3 km out ahead of this system suggesting the threat for severe weather remains low to nil. As for temps will stay close to the warmer MOS guidance through tonight resulting in high temps in the upper 60s to near 70 for most areas and lows in the lower to middle 50s inland and the upper 50s to near 60 along the immediate coast.
720 AM EST Tue Feb 21 2017 High pressure will crest over the region early today before shifting offshore. A warm front will push east through the region tonight. Low pressure moving east through southern Canada will drive a cold front toward the region late Wednesday and Wednesday night.
/Issued 336 AM CST Tue Feb 21 2017/ An upper ridge will build across the Panhandles today and then shift eastward tonight and Wednesday.
658 AM CST Tue Feb 21 2017 Fairly significant update to the current forecast to include scattered thunderstorms with the potential for small hail as the cold core upper low begins to rotate through the area after noon today.
As the upper low shifts eastward today and then southeastward tonight into the northern Gulf, a steady stream of moisture will advect into Central Alabama, leading to widespread showers through the day and much of tonight. Several waves of rain are possible (the first being the current activity moving into the state) as ripples in mid level flow enhance lift ahead of the upper low. Forcing associated with the upper low itself will help maintain widespread shower coverage for much of the area tonight. Although, strong or severe storms are not expected, cannot rule out thunder with the height falls associated with the approaching upper low and slight decrease in upper level temps.
Isolated thunderstorms were developing in the vicinity of the upper low over NE Texas. /ISSUED 332 AM CST Tue Feb 21 2017/ An upper low will move across the Red River Valley into the lower Mississippi Valley today with an upper trough moving over SE Texas this morning. An upper ridge will then develop over the state later this afternoon and tonight.
521 AM CST Tue Feb 21 2017 VFR with light winds as an upper level ridge axis moves overhead. /issued 323 AM CST Tue Feb 21 2017/ A warm and generally uneventful weather day is on tap today, as an upper level ridge axis just to our west moves over the Texas South Plains region later today, then shifts east tonight. Relatively mild will continue tonight, although we are siding with the lower end of guidance due to light wind and dry air. On Wednesday, a short wave trough will dig across the Sierra Nevada mountains.
There are a few spots of locally dense fog, mainly on the edge of the low clouds/clearing, or from Grafton to Bemidji, and down toward Park Rapids. Finally, it looks like Fargo will have one more day with a record high, as we are forecasting temps to rise into the low 50s there. The warmer sfc temps remain along the southern edge of this pcpn band, with colder temps near the Canadian border.
453 AM PST Tue Feb 21 2017 Yet another impressive low pressure system is moving through the forecast area this morning with more rain, wind, and mountain snow.
521 AM CST Tue Feb 21 2017 Upper low moving to the south of the forecast area should promote MVFR ceilings through much of this period. Water vapor imagery reveals center of closed low over southeast Texas, moving eastward.
An elongated area of cool high pressure will slide in from the west, and reside over the Plains States from 06-12Z Saturday.
240 AM PST Fri Nov 18 2016 After a chilly morning with some frost in the high desert, dry offshore flow and plenty of sunshine will bring a warmer day today. Patchy frost will return in parts of the high desert tonight.
503 AM CST Fri Nov 18 2016 An upper level low is currently pushing east across the Plains as a corresponding cold front pushes east across eastern Kansas early this morning. Temperatures ahead of the front are currently only in the lower to middle 60s which is warmer than normal highs this time of year. Temperatures will likely be 15 to 20 degrees warmer going to work this morning than they will be coming home this afternoon/early evening. Lows tonight will drop into the upper 20s to the lower 30s as the colder conditions spread into the area.
1041 AM EST Fri Nov 18 2016 High pressure continues today. Strong cold front early Saturday.
A chilly early morning will give way to slightly warmer high temperatures today across the district.
Upper ridge over the area will shift east. and a cold front will approach late.
An area of low pressure is expected to develop and move through Kansas this evening and advance northeastward through the Northland Friday and Friday night. The latest forecast models are indicating the track of the low pressure has shifted slightly further southeast, which indicates higher confidence in snowfall across northern MN and northwestern WI.
Otherwise, southerly winds will continue to transport gulf moisture inland ahead of a strong cold front expected to advance across the forecast late this afternoon and evening. The start of the day is seeing temperatures from the low 60s to near 70 on south winds acrs se Tx and srn La. Temperatures ahead of the front are running in the lower 70s at DFW while AMA temps have dropped into the lower 40s.
High pressure will bring dry weather across northern and central Nevada today.
Fairly strong high pressure ridging along the eastern seaboard and across the GOMEX will gradually weaken and drift just off of the east U. High pressure over the region will gradually begin to weaken over the next 24hrs.
629 AM EST Fri Nov 18 2016 Highs will once again push up to near 70 degrees today in advance of a cold front expected to produce a brief period of showers and perhaps a few thunderstorms this evening into the early overnight.
Currently the front is draped from just west of I-35 across northwest Missouri with the pressure trough extending from Des Moines southwest through northern Kansas, with winds ahead of and behind the front rather strong thanks to the strong pressure gradient around the stacked low pressure system. However, all the readings in the 30s and 20s across eastern Nebraska will eventually spread south today, resulting in falling temperatures through the day with near to sub-freezing overnight lows tonight into Saturday morning. This will keep Saturdays highs rather cool, with a morning low around to below freezing and highs in the 40s.
Winds will increase significantly as well and will be the strongest on Saturday as temperatures fall behind a cold front and rain gradually changes over to snow. Models strongly suggest that the DGZ will desaturate resulting in a transition to drizzle/freezing drizzle with lake effect precipitation.
Then a cold front will move through the region tonight. This will result in much cooler temperatures for the weekend. Ridge axis at the surface and aloft will remain southeast of the area today. Highs should be near or slightly warmer than yesterday which will be near record warmth. Strong cold front will cross the area overnight. As the low level flow veers, changing the trajectory off of the lakes, any precipitation will be limited to the far northern counties into Saturday night.
A broken period of MVFR ceilings will be possible immediately behind a cold front passing through the region today, with improving conditions by late morning. /Issued 256 AM CST Fri Nov 18 2016/ A strong cold front continues to sweep quickly east. but highs will be a good 20 degrees cooler than what we saw yesterday. Clear skies and diminishing winds will allow temperatures to fall below freezing Friday night across a large portion of the forecast area.
Precipitation will clear out of the area by 06Z, with winds diminishing as high pressure settles in. Careful what you wish for, eh? 08Z surface analysis shows a cold front from southeast Kansas extending into the Red River Valley area of Oklahoma and Texas. Behind the front, northwest upper flow will send high pressure into the area to start the weekend. Much colder readings will be noted Saturday night, with the north and west seeing a hard freeze, and the remainder of the area bottoming out around or a little below freezing.
/Issued 341 AM EST Fri Nov 18 2016/ Dry high pressure is in control today and a sunny and warm day is expected with high temperatures running 12-16 degrees above normal. A rather strong cold front is forecast to move across the area late tonight and early Saturday. The main effects of the front will be to usher in a cooler airmass.
The start of the day is seeing temperatures from the low 60s to near 70 on south winds acrs se Tx and srn La. Temperatures ahead of the front are running in the lower 70s at DFW while AMA temps have dropped into the lower 40s.
Dense freezing fog has spread into the Great Falls area due to clearing skies. Have therefore expanded the Freezing Fog Advisory to include the remainder of North Central Montana.
Dry conditions with slightly warmer temperatures expected today under continued ridging. Increased northwest flow will continue through the afternoon hours for parts of the lower Treasure Valley. The axis of the ridge will then move through the area during the late evening/overnight hours to permit wind to weaken with developing southwest flow. Another pacific low pressure system will approach the coast late tonight, and moisture associated with this system will move along the southwest flow to impact portions of eastern Oregon by late Saturday morning.
942 AM EST Fri Nov 18 2016 High pressure in place across the area will weaken today as a cold front approaches the area. Winds will continue to be fairly light through the day as high pressure across the waters weakens in advance of a cold front.
/Issued 351 AM CST Fri Nov 18 2016/ Cold front has cleared the Oklahoma and Texas Panhandles, and it is well on its way to reach the Gulf by early this evening.
656 AM EST Fri Nov 18 2016 Strengthening low pressure will track north of Pennsylvania Saturday, pushing a strong cold front through the state.
It will be tough to get much precip out of the cold front late tonight. The big weather maker for today will be a large trough that is expected to push a cold front through the area tonight. So only sight chance of rain tonight, but the bigger impact will come this weekend with much cooler temperatures. 13/MH Behind the front on Saturday expect much cooler temperatures and strong gusty winds.
A strong but dry cold front will cross the Carolinas late Saturday, followed by much colder temperatures.