Aikyam-Lab/Synoptic-Bench huggingface dataset:
Very warm temperatures expected Tuesday followed by cooler temperatures for the latter half of the week behind the front. Moisture will begin to increase as a cold front develops to the north. A cold front will approach the forecast area from the Tennessee Valley region on Tuesday and drop south across the area Tuesday evening through early Wednesday. The front will push south of the area on Wednesday with a wedge of high pressure building in behind it.
Temperatures over the higher terrain along and to the north of I-80 could support rain/snow mix with no accumulation expected. Secondary/arctic cold front pushing southeast across the Lower Great Lakes this evening will traverse the area overnight into early Wednesday morning. 1040mb high pressure builds over the area Wed night, setting up a pretty cold night for this time of year.
WV imagery indicates a weak upper level ridge of high pressure situated across the Northern and Central Rockies. Meanwhile, high pressure dominates across the Northern Plains. Mostly clear skies will continue this evening as a cold front continues to slowly sag southward into the Southern Plains. As for temperatures, lows tonight look to range from the lower 40s north to lower 50s south. Highs will generally be in the low to mid 50s with the exception of along the KS/OK border where around 60 degrees will be found.
154 AM EDT Tue Mar 21 2017 High pressure will prevail across the area tonight into Tuesday. A cold front will drop south through the area Wednesday as a wedge of high pressure builds in from the north.
High pressure is expected across the area for most of the rest of the week. Will have to keep an eye on this as the low level flow is favorable for this to advect into the northeast zones prior to sunrise. Residual cloud cover from today should gradually thin and scatter out during the night tonight as short wave trough continues to push southeast.
344 AM EDT Tue Mar 21 2017 Heights are falling slightly tonight as the large high pressure ridge that covered most of the CONUS deamplifies. At the surface, high pressure ridge centered across the offshore Atlantic will continue slipping southward. Nevertheless, a very warm day with highs in the low to mid 80s is expected. The weak front to the north will slip southward and bring a chance for scattered showers and storms to southeastern Georgia and the offshore waters as the upper level ridge axis rebuilds and shifts east over the Gulf.
A cold front is slowly sagging south across the cwa this afternoon shifting winds north/northeasterly and as these winds increase during the mid/late afternoon. cms 304 PM CDT Northwest flow still anticipated to be in place and although high pressure will build southeast across the region during this time, still am monitoring for the potential of some light rain Tuesday afternoon. This forcing quickly shifts to the southeast by Tuesday evening, as high pressure really begins to shift overhead Tuesday night into Wednesday. However, by early to mid afternoon today the winds will shift back to the northeast with the passage of a lake breeze enhanced cold front front. KJB 207 AM CDT Another cold front will shift southward over the lake today.
335 AM PDT Tue Mar 21 2017 A low pressure system off the California coast will move slowly inland through Wednesday night bringing periods of mostly lighter precipitation into this evening.
414 AM EDT Tue Mar 21 2017 A weak cold front will exit the area this morning and provide a shower or two as it passes. A second, stronger cold front, will sweep through tonight, bringing much colder temperatures on Wednesday. Scattered showers are possible across the southeast this morning as a cold front crosses those locations. Maybe a scattered snow shower in the I-80 corridor early Wednesday morning, or a snow shower in the higher elevations once the heart of the cold air reaches the ridges.
509 AM EDT Tue Mar 21 2017 A weak cold front will exit the area this morning and provide a shower or two as it passes. A second, stronger cold front, will sweep through tonight, bringing much colder temperatures on Wednesday. Scattered showers are possible across the southeast this morning as a cold front crosses those locations. Maybe a scattered snow shower in the I-80 corridor early Wednesday morning, or a snow shower in the higher elevations once the heart of the cold air reaches the ridges.
High temperatures today will be in upper 80s to lower 90s (except for the low to mid 80s near the coast) due to combination of abundant sunshine and a drier airmass in place.
601 AM EDT Tue Mar 21 2017 A cold front will approach from the northwest early on today and will drop south through the region during the day.
High pressure south of the CWA stretched across the Florida peninsula from the Gulf into the Atlantic will continue to dominate today.
414 AM CDT Tue Mar 21 2017 For today, a cold front will continue a slow southward push across central and southern Oklahoma and western north Texas. Overall, a cooler day is in store for northern Oklahoma, while southern Oklahoma and north Texas will need help from the AC. Although a mid level ridge axis will be over the southern Plains Wednesday and Wednesday night, clouds and an easterly wind will result in near average temperatures for most of Oklahoma.
135 AM EDT Tue Mar 21 2017 Cold front with showers and thunderstorms crossing the area.
Overnight lows will range in the lower to middle 30s. Tuesday morning passage of a weak trough will keep chance/slight chance pops across far northern areas until mid morning the dry for remainder of day. Temperatures will be mild with afternoon maxes in the lower to middle 40s. Although a cold NNW flow will be in place Wednesday morning, moisture depths will be diminishing, as high pressure builds in from the west.
High pressure will drop down from Canada tonight bringing dry and cool conditions to northeast SD and west central MN. This upper level energy will bring light snow to areas south of Mobridge with up to an inch possible from Pierre south. At 00Z Wednesday, while troughs will dominate the Pacific coastline, and the eastern half of the nation, a high amplitude ridge will be set up from TX through the WY/SD border up through Alberta.
1120 PM MDT Mon Mar 20 2017 20z surface analysis had frontal boundary from central WY into southwest NE with ridge across the Dakotas into the Midwest. Thermal ridge will nose over the low level cold air. Lingering precipitation will end early Wednesday as upper ridge builds into the area.
/issued 245 PM CDT Mon Mar 20 2017/ Current visible satellite imagery is showing cumulus developing in the higher elevations from the Guadalupe to the Davis Mountains this afternoon. The heat returns tomorrow with another record high expected before a weak cold front enters the area dropping temperatures back to only around normal on Wednesday.
The period does begin with high pressure east of the region along the Mid Atlantic coast Wednesday night. After this high pushes east as an upper level ridge will build across the region.
The low stratus/fog forecast for overnight is a bit uncertain. The 00Z CRP sounding showed a drier airmass than previous 12-24 hrs with very limited moisture at the lowest levels. Temperatures will remain warm through the period as ridging is maintained aloft. Moisture will be limited despite the persistent onshore flow but noticeable in the lower levels with morning clouds that will lift and erode through the day with heating.
226 AM EDT Tue Mar 21 2017 A cold front will approach from the northwest early on today and will drop south through the region during the day.
318 AM CDT Tue Mar 21 2017 A surface cold front has sagged south across the region into northern Arkansas early this morning. The 850mb cold front is lagging behind the surface front and will spread south across the area today. With the front moving south through the area temperatures will range from the around 60 across central Missouri to the lower 70s across southern Missouri tonight. Cooler conditions will occur on Wednesday as highs in the 40s and 50s occur.
514 AM EDT Tue Mar 21 2017 An arctic cold front will drop south across the area late today and early tonight. High pressure will move southeast from the Canadian Plains across the area Wednesday night.
330 AM CDT Tue Mar 21 2017 A cold front boundary will continue to move southeast this morning, entrenching the Northland under a colder air mass today. 925 mb temperatures will drop between 5 and 15 degrees C below zero across the Northland this morning, which will lead to high temperatures today ranging from the lower 20s along the International Border into the lower 30s over our southern tier of counties. This area of high pressure, along with low-level ridging, should keep the region quiet through the day Wednesday as it advances across eastern Lake Superior Wednesday afternoon.
However, a better chance for convection will be in the terminal forecast at cha and tys later today into the early evening hours as short wave energy rides southeast in the vicinity of a cold front.
Large upper level low remains offshore with southwesterly flow over the region. Satellite shows several short waves rotating through the low. Cold front will cross the area Tuesday with more widespread rain. The low will continue to influence the weather into Wednesday with occasional rain. Temperatures Wed will be warmer with increased southwest winds as well. Cold front moving through Tuesday likely to bring a period of steady rain followed by scattered showers again. An upper level trough will control the weather across the Pacific Northwest through this period. The best coverage of showers will occur on Tuesday, as a relatively strong wave moves through the trough and across the area. The higher snow levels early in the period, and the showers will keep many rivers and streams running at or near bankfull.
The cold front currently entering nw WI will move across srn WI from late morning into the early afternoon. High temps will range from the lower to middle 40s.
For today, a strong arctic cold front will be blowing through the area reaching the Saginaw Valley near noon then through the Detroit Metro area around 4pm.
201 AM EDT Tue Mar 21 2017 A weak cold front will move across Tuesday morning, followed by a stronger cold front Tuesday night.
328 AM CDT Tue Mar 21 2017 Area under sfc-925 mb cold advection through most of the day as high pressure drops south from into southern Manitoba by days end.
A weak cold front will move southward Tuesday evening and stall across the southern Permian Basin by Wednesday morning. Front will bring some cooler temperatures for Wednesday, but not much in the way of rain.
1231 AM CDT Tue Mar 21 2017 High pressure has yielded sunny skies across much of the Northland this afternoon while a cold front stretched across far northern Ontario, southern Manitoba, and southern Saskatchewan. Skies should remain clear this evening ahead of the cold front and temperatures will gradually cool off. Temperatures will trend cooler behind the front. Lows tonight will bottom out in the low single digits in northern Minnesota and the upper teens to low 20s over central Minnesota and northwest Wisconsin. Normally cold areas may see temperatures dip below zero overnight, but the strong winds may keep the boundary layer mixed and temperatures a bit warmer than otherwise expected. Highs on Tuesday will reach the low 20s in northeast Minnesota to the low 30s over central Minnesota through much of northwest Wisconsin.
However, an outside chance for precip exists late tonight as short range models indicate a series of H5 vort maxima ejecting out of the Colorado Rockies into the high plains. Considering increasing cloud cover during the period, look for highs only up into the 50s(F) across central and portions of southwest Kansas this afternoon with the lower to mid 60s(F) still expected in south central Kansas and possibly extreme southwest Kansas along the Oklahoma border.
359 AM EDT Tue Mar 21 2017 A weak cold front will move across this morning, followed by a stronger cold front tonight. High pressure moves into the Great Lakes Wednesday and then closer to the local region Wednesday night.
Winds dropped significantly during the last 24 hours, as a weakening high pressure cell moved southward toward the service area. Forecast reasoning has changed little during the last 24 hours, and we have high confidence in a late-week wind surge associated with the rapid development of a sprawling high pressure cell across the eastern seaboard and adjacent western North Atlantic.
A cold front is slowly sagging south across the cwa this afternoon shifting winds north/northeasterly and as these winds increase during the mid/late afternoon. cms 304 PM CDT Northwest flow still anticipated to be in place and although high pressure will build southeast across the region during this time, still am monitoring for the potential of some light rain Tuesday afternoon. This forcing quickly shifts to the southeast by Tuesday evening, as high pressure really begins to shift overhead Tuesday night into Wednesday. However, by early to mid afternoon today the winds will shift back to the northeast with the passage of a lake breeze enhanced cold front front. Further expansion of the high towards our region will allow winds to increase once again during the day Tuesday but more so by Tuesday evening.
436 AM MDT Tue Mar 21 2017 Cooler air has moved into eastern Colorado. There is more moisture as well, but the low level air is not close to saturation. This will help increase moisture, and also help maintain the low level inversion over the plains. Best chances are probably near the northern border and along and east of a Denver cyclone boundary that should have developed by afternoon.
443 AM EDT Tue Mar 21 2017 A weak cold front will move across this morning, followed by a stronger cold front tonight. High pressure moves into the Great Lakes Wednesday and then closer to the local region Wednesday night.
Winds remain fresh to strong from the northeast with temperatures slowly but steadily rising into the lower 80s. Large high pressure stretching across the eastern United States will continue to drive fresh to strong breezes across all waters surrounding the Florida Keys for the next several days.
Temperatures will be approaching the single digits in some valleys across northwest Montana and the higher elevation valleys of southwest Montana.
Quiet weather and warm dry conditions will persist over the forecast area through mid- week, as high pressure remains wedged into the region from the northeast.
A ridge axis will extend from well west of Baja California (25N/130W or such) eastward into the Gulf of Mexico.
1245 PM EDT TUE OCT 11 2016 Hydro An upper air disturbance crossing the area this morning may bring a few sprinkles of rain but skies then skies should become partly cloudy this afternoon and it should be a little warmer than yesterday with highs near 70. A seasonably strong cold front will come through the area Wednesday evening with showers and a few thunderstorms. It will be even warmer tomorrow with highs in the lower to mid 70s.
813 AM EDT Tue Oct 11 2016 High pressure will crest over the region today providing sunny weather and light winds. The high will gradually shift east into the Gulf of Maine this afternoon through Wednesday.
A strong cold front remains on track to enter NE OK Wednesday morning and push through the forecast area by Wednesday evening.
A strong ridge of high pressure will continue to dominate the weather of eastern Kentucky through mid week. A high pressure ridge responsible for our recent run of dry weather will be situated just east of the Appalachians at the start of the period. A cold front will be approaching from the northwest with the aid of a progressive upper level trough.
1017 AM EDT Tue Oct 11 2016 A large high pressure system will maintain control of our weather through Wednesday.
A subtle warm advection will result in highs today generally reaching about a degree warmer than yesterday. A larger upper level trough. A chance of showers and slight chance of thunder ahead of an approaching cold front will take place from around Springfield to Lincoln to Peoria westward by daybreak. A cold front making its way through the Midwest on Wednesday brings likely showers and thunderstorms.
High pressure over the eastern states will keep it dry through tonight. Then, a cold front will slide southeast across central Indiana Wednesday night. The weather will turn briefly cooler behind the cold front.
Forecast area lies between a strong high pressure ridge over north-central Mexico and turbulent wave flow across the Intermountain West to the north. Minimum humidities will generally range from 10-15% on the lower deserts to near 20% on the higher terrain.
1109 AM EDT Tue Oct 11 2016 High pressure will crest over the region today providing sunny weather and light winds. The high will gradually shift east into the Gulf of Maine this afternoon through Wednesday.
The cool Fall weather will begin to leave today as southerly flow returns to the region and upper level high pressure begins to build into the region from the south. High temperatures today will top out in the middle to upper 80s or about 5-7 degrees warmer than yesterday. Low temperatures will only bottom out in the middle 50s to near 70 degrees with the higher values in the eastern counties.
636 AM CDT Tue Oct 11 2016 As of 08z, surface cold front was approaching the James River Valley. Surface cold front exits the forecast area prior to 12Z Wednesday, but lingering mid level front could keep a chance of mainly light rain in parts of northwest Iowa/southwest Minnesota through mid morning.
745 AM EDT Tue Oct 11 2016 High pressure will crest over the area today and tonight then move east of the region on Wednesday.
1243 PM EDT Tue Oct 11 2016 High pressure will maintain dry weather through Wednesday.
938 AM EDT TUE OCT 11 2016 High pressure keeps dry weather going through Wednesday, with a warming trend.
852 AM EDT Tue Oct 11 2016 High pressure will maintain dry weather through Wednesday.
736 AM EDT Tue Oct 11 2016 High pressure will slide to the east today and Wednesday.
924 AM EDT Tue Oct 11 2016 High pressure over the region today will gradually shift offshore through Wednesday.
At that time a broad longwave trough now centered over the Pacific Northwest will nose into the Northern Plains early Wednesday morning.
1059 AM EDT TUE OCT 11 2016 Dry and cool high pressure will ridge southward and into the forecast area through Wednesday.
Brisk NE flow continues across Florida at mid morning due to a large area of high pressure over eastern U. The high surf will make dangerous swimming conditions, with a powerful shore break and high rip current risk.
930 AM PDT TUE OCT 11 2016 A weak trough moving inland across California through Wednesday will bring cooling and a deeper marine layer.
920 AM PDT TUE OCT 11 2016 Below normal temperatures with night through morning low clouds and fog are expected through Wednesday as a weak upper level trough moves through the region.
732 AM CDT TUE OCT 11 2016 /12Z TAFs/ Deepening low pressure in the lee of the Rockies will increase south winds today, steadily increasing low-level moisture. A cold frontal wind shift with thunderstorm chances is expected Wednesday evening. /ISSUED 353 AM CDT TUE OCT 11 2016/ Skies are clear across North Texas early this morning with weak upper ridging and a dry airmass in place. Water vapor imagery shows a large upper trough moving into the northwest U. The upper trough will quickly move through the Northern Plains tonight sending a fairly strong cold front southward toward Texas during the day on Wednesday.
Models continue in good agreement through the short term shifting the H5 ridge axis to our east putting the CWA in a southwest flow. as mid-level cyclonic flow persists across the Midwest and Great Lakes and a ridge centers over southern TX/eastern Mexico. This places the CWA in a zonal flow in mid/upper levels while the relentless sfc ridging down the Appalachians into Ga finally begins to break up as next weak frontal system approaches.
U/L blocking pattern over the eastern Pacific will break down as the sharp ridge builds north over western Canada and Alaska. This will induce a strong L/W trough to dig from northern Canada to the southern Plains with the main northern stream flow. A strong U/L ridge over the southern plains will extend across the Gulf of Mexico and Florida peninsula. At the surface, high pressure over New England will extend down the Eastern Seaboard across the southeast U.
A cold front/northerly wind shift wild approach northwest Oklahoma (KGAG and KWWR) toward at the end of the TAF period. A seasonably strong cold front is expected to pass through Wednesday. The exception will be parts of western north Texas and far southeast Oklahoma, where the cold front won't pass by until Wednesday evening.
Looks like will continue to see these showers redevelop in advance of next upper trof moving across the Northern Rockies. Main cold front with this system will drop into Northeast Colorado later this evening with stratus and patchy fog developing over the Northeast plains overnight tonight. Have already made some changes to add showers and cooler temperatures over the Plains. a cold front associated with the trough passing to the north will push through the cwa in the 02z- 05z time frame. A weak short wave embedded in the westerly flow aloft is expected to bring clouds late Wednesday night and help keep temperatures above freezing.
A weak low-level trough and moisture advection is allowing for isolated to scattered showers in the near-shore and far off-shore waters with the coastal waters currently devoid of shower activity. A mid level ridge will be building into south Texas over the next couple of days. A weak trough of low pressure was over the northwest Gulf of Mexico east of the offshore waters. This trough axis will move through the coastal waters today and move inland this evening. CIRA layered precipitable water image shows the higher moisture east of the trough axis with PWAT values up to 2 inches. Isolated showers will be possible tonight over the coastal counties as the trough moves inland.
/issued 257 AM CDT TUE OCT 11 2016/ Warm and dry zonal mid level flow today will serve to amplify lee trof/thermal ridging across the ern NM plains. MSLP gradient will be tightest e of said trof where sly winds around 15 mph are possible this PM. Meanwhile a mid level trof will be moving e of the nrn Rocky Mtns today with a cold front following. Wed PM s of the front temps will be just as warm as Tue if not a degree or two warmer. Thur PM it will be noticeably cooler e of the mtns with highs mostly back into 70s. Models do suggest a minor shrtwv trof to pass Late Thur PM and with 7h-5h LR's near 7 C/KM there could be a few tstms into Thur evening.
A mid level ridge will be building into south Texas over the next couple of days. A weak trough of low pressure was over the northwest Gulf of Mexico east of the offshore waters. This trough axis will move through the coastal waters today and move inland this evening. CIRA layered precipitable water image shows the higher moisture east of the trough axis with PWAT values up to 2 inches. Isolated showers will be possible tonight over the coastal counties as the trough moves inland.
Cold front through all but the Park Rapids and Wadena areas and it should be through those areas by 12z. Mid level mositure streaming northeast ahead of a positively titled 500 mb short wave trough will bring some light precipitation to northeastern ND and into far northwestern MN as the morning progresses and this precipitation area will sink south and east this aftn and evening.
This flow will once again allow an east to west temperature gradient to set up, with the highest temperatures west this afternoon. Highs will range from the upper 70s east to the lower to middle 80s west. Some of the cooler spots in the north may drop to near 40 degrees.