Aikyam-Lab/Synoptic-Bench huggingface dataset:
809 PM PDT Sat Nov 4 2017 Weakening cold front will move through the area overnight.
806 PM EDT Sat Nov 4 2017 High pressure along the eastern seaboard will hold over the forecast area through the remainder of the weekend. Dry warm conditions will persist on Sunday with skies becoming partly cloudy and high temperatures in the lower to mid 80s.
Clouds will decrease as well as the winds during the day, leaving a relatively nice day over South Texas, and Wednesday looks just as good with warmer temperatures. By this afternoon, it basically is a temperature forecast as the upper ridge builds in today, weakens tonight and then zonal flow on Wednesday with moisture levels less than 1 inch over the area. Only real tricky part of the forecast will be low temperatures tonight, as with weak onshore flow the coastal areas could stay rather mild while inland areas (especially north will fall into the lower to mid 50s). Warmer Wednesday with plentiful sunshine and inland highs in the 80s.
Currently, high pressure currently settling in over the area. Allowing us mostly clear skies tonight giving way to lows in the lower 30s. Tuesday, we will continue to warm up with highs in the lower 70s across the Tri-State area, and lows over night will be in the lower 40s. A potent upper level trough is progged to move ashore the Pacific coast late Wed/Wed night. Increasingly diffluent flow aloft over the Rockies is expected to result in the development of a lee cyclone in eastern CO and western KS Wednesday night/Thu. The cyclone is expected to track northeast through Nebraska Thu night/Fri (as the aforementioned upper trough progresses east across the Rockies), then stall in vicinity of IA/IL/MO Fri-Sat as the upper wave closes off and the mid-latitude cyclone matures.
850 mb cold advection continues in the NW flow, but with more sunshine, we should see high temps a bit warmer than yesterday, in the mid 50s north to mid 60s south. 00Z MOS guidance does not warrant any freeze watch/warnings at this point, with lows mostly in the mid 30s, and the NAM does show some increasing cloud cover tonight with an upper level trough.
216 AM EDT Tue Apr 10 2018 Low pressure moves northeast and away from the area later today as high pressure builds in from the west. The high will be centered across the local area Wednesday and Wednesday night.
This afternoon will be dry with a few breaks of sunshine as high pressure builds in from the Ohio valley. Snow accumulations will generally be a half inch or less with the higher terrain in the Poconos and southern Catskills approaching an inch. By this afternoon surface ridging from the Ohio Valley will make for some sunny breaks as high temperatures range from the upper 30s to middle 40s. High pressure will reside over the area tonight providing mainly clear skies and cold temperatures as lows drop into the lower to middle 20s. On Wednesday, high pressure will move to the east coast as the next low pressure system moves into eastern Canada. A warm front associated with this system will bring a chance for rain showers during the afternoon mainly west of I81.
419 AM CDT Tue Apr 10 2018 A sharpening of the upper level trough thats been in place over the eastern half of the country for the last few days is bringing a cold front through the CWA this morning.
/issued 650 PM CDT Mon Apr 9 2018/ /00Z TAFS/ The low cloud field (with MVFR ceilings) continues to slowly decrease in areal extent, over mainly the Concho Valley and Heartland areas of West Central Texas. Temperatures will drop overnight as skies clear, with readings in the low to mid 40s for most locations. Winds will return to the south, with highs climbing into the low to mid 70s.
325 AM CDT Tue Apr 10 2018 Positive tilted trough axis extended from the OH valley across the Ozark Plateau to the Red River. The low level atmosphere remains too dry to support precipitation and have kept today's forecast dry. Despite modest cold air advection, temperatures should still warm into the lower 60s this afternoon. Another chilly night is ahead as a surface/850 mb ridge axis drifts into the TN valley.
The axis of the associated upper trough will swing across the area today, hastening the departure of the remaining clouds early today. I wouldn't be entirely shocked to hear of patchy frost in the cooler pockets in the north central/northeast part of the CWA.
Some locations underneath the center of the high pressure system in the far eastern Texas Panhandle may experience some low clouds and patchy fog.
Main impacts from this trough will be some cloud cover as well as reinforcement of the cold air aloft over the mid state. Low temperatures tonight will be in the low to mid 30s, with near freezing temps most likely on the Plateau. Models have been trending cooler with each run, so its possible a freeze warning may be needed should freezing temps look to be more widespread than just a few areas for Wednesday morning.
Winds will be light overnight as well with the high pressure ridge translating over the Northland, so good radiative cooling is expected. A mid level trof and its surface cold front will move through the eastern potion of the forecast area Tuesday night. A mix of rain and snow is possible early, becoming all snow after 10 pm, then ending by the overnight hours as high pressure arrives from the West. The high prevails through Wednesday morning.
The lack of deeper saturation should prevent ice nucleation, so we should not see any wintry precipitation and temperatures will remain above freezing, so no impacts are expected. With the ceilings expected in the 3-6kft layer through most of the night, and a persistent north breeze, we should be able to stay just above freezing in most areas and frost development will be difficult to get.
Today Through Wednesday Night Fairly quiet conditions will be seen throughout the short term period as high pressure moves over the region. These SRLY winds will allow for much warmer and closer to normal temps Wed afternoon.
A warmer day will be on tap for Wednesday as the boundary layer modifies and we see another full day of sunshine. The recent air mass filtering in will mean the day will start off with near and slightly below freezing conditions.
Lows will range from the mid-50s in our northern areas to the lower 60s in our southern areas. At the same time lee effects combined with upper support from the northern stream wave will develop an elongated low/trough just east of the Appalachians, extending southwest into the Tri-State region. Expect mainly light rain with the trough further upstream, and some heavier rain and isolated storms along the Big Bend coast and southeast Big Bend near the low along the front. Showers will push southeast of the southeast Big Bend late in the evening on Tuesday, with zonal flow aloft, ridging at the surface, and dry conditions through Wednesday.
Slightly Warmer and Dry. A thermal ridge, at 850 mb, will expand, from the west, into West Central Texas today. This will help produce afternoon highs warmer than yesterday, especially with lots of afternoon sunshine.
The approaching upper ridge will flatten by Wednesday as we get ready for several breezy to windy days.
SHORT TERM: Warm temperatures Tuesday ahead of an upper level trough and an approaching front. The upper level trough and front will move through Tuesday evening into Wednesday. High pressure will build allowing for easterly flow to persist through the rest of the week.
High pressure ridging gradually moves east today allowing for the next system to move through. Expect showers over the Central mountain this afternoon ahead of a cold front, with showers impacting the entire area this evening into Wednesday morning as the cold front moves through. Look for breezy to moderate southwest flow ahead of the next cold front Wednesday afternoon.
431 AM CDT Tue Apr 10 2018 High clouds continue to clear from NW to SE this morning along a weakening cold front that is little more than a reinforcing shot of drier air. Cool canadian high pressure is quickly building in behind the front with breezy north winds prevailing today. Mild temperatures in this cooler air mass will result in highs nearly identical to yesterday with mid 60s to lower 70s.
347 AM EDT Tue Apr 10 2018 High pressure across Maine will retreat east and into the Atlantic today. Low pressure will pass well south of the region tonight as a weak trough crosses the area this evening. High pressure builds back into the area late tonight and Wednesday.
Broad upper level trough in the Gulf of Alaska will bring a series of waves across the region in the short term with a potent cold front on Wednesday evening. The HRRR model brings a dry slot across SE Oregon and into the Snake Plain of southern Idaho this afternoon; if this feature pans out, it would produce gustier winds and warmer conditions than what is currently in the forecast.
315 AM EDT Tue Apr 10 2018 A series of low pressure systems will track offshore of the southeastern U. coast through Tuesday, while unseasonably cool high pressure builds/extends across the middle Atlantic region by midweek.
The ridge moves overhead on Wednesday as a lee side sfc trof develops and winds turn SW.
Upper level ridge moving off to the east tonight allowing clouds to increase from offshore frontal boundary. An upper level trough will push the cold front through the forecast area Tuesday with a period of rain and locally breezy westerly winds. Increasing mid and high level clouds overnight in advance of a cold front.
600 AM EDT Tue Apr 10 2018 High pressure will build in today with partly cloudy skies and highs in the mid 40s.
On a positive note, the period will start off a little warmer under a building upper ridge. With warmer daytime temps expected, this system will bring mainly light rain to the ND/SD border. In the very early hours of the morning, some of that may be freezing rain over Campbell and McPherson counties, but little ice accumulation is expected.
Temperatures will fall to or just below freezing across portions of this area too, particularly in low lying normally colder areas. Our primary focus is on significant trough that will approach our area late week.
Water vapor also indicated an upper trough over the Northwest Territories. The upper low will move across Ontario tonight and send colder air into the northern zones for late tonight. 12z Wed - 00z Fri Fast moving 500 mb short wave will eject east from the low off the Washington coast and across Montana and into North Dakota Wednesday. Loss of ice aloft as the system departs but still plenty of low level moisture and sub zero (deg C) column supports the threat for some freezing drizzle later Wed night or early Thu in parts of NE ND and NW MN. But model blends trying to generate freezing rain and ice accumulations seem way overdone as soundings dont support measurable freezing rain event.
Some sunshine before the clouds develop, along with warm advection, should boost high temps into the lower to middle 40s. The swly flow and warm advection tonight should keep the low temps in the 30s.
400 AM CDT Tue Apr 10 2018 Sfc analysis this morning shows a weak cold front oozing through the forecast area with temps running about 10 degrees lower than this time yesterday. After a day of nearly seasonal temps today with highs in the lower/mid 70s, expecting another cool night tonight with mins dropping to roughly the 45-50 degree range all but near the coastline.
332 AM EDT Tue Apr 10 2018 High pressure will build in today with partly cloudy skies and highs in the mid 40s.
SHORT TERM (Now through Wednesday): The cold front has swept through the area earlier tonight, with modest northerly flow in its wake.
/Issued 709 PM CDT Mon Apr 9 2018/ For the 00Z TAFs, winds will become southwest, increase and become gusty by mid to late Tuesday morning at the TAF sites as a surface trof of low pressure strengthens over eastern Colorado and eastern New Mexico.
Our next cold front is on tap to impact the region by later in the day Wednesday, with falling snow levels and much colder temperatures to help change rainfall over to snowfall.
Current timing would end the snow showers shortly before dawn in the southeast ridge counties. Temperature recovery will continue to be limited today as the Upper Ohio Region remains under the influence of broad upper trough. Broad high pressure is expected to keep weather dry tonight and Wednesday.
This front will bring chances of precip to the area, though the lower Columbia Basin and Yakima valley will have the lowest chances. Winds will increase this afternoon becoming breezy behind this cold front. This system still looks to be stronger, wetter and cooler than the one today. Thus will continue the high precip chances for much of the area Wednesday afternoon and evening.
625 AM EDT Tue Apr 10 2018 Upper air pattern consists of a 500 mb trough over the upper Great Lakes this morning.
546 AM CDT Tue Apr 10 2018 Latest water vapor imagery in combination with RAP 500 mb analysis shows a large upper level ridge sliding east over the western U. At the surface, high pressure continues to push south through the region with strong low-level warm air advection already underway.
700 AM EDT Tue Apr 10 2018 A series of low pressure systems will track offshore of the southeastern U. coast through Tuesday, while unseasonably cool high pressure builds/extends across the middle Atlantic region by midweek.
426 AM EDT Tue Apr 10 2018 Upper air pattern consists of a 500 mb trough over the upper Great Lakes this morning.
This afternoon will be dry with a few breaks of sunshine as high pressure builds in from the Ohio valley. Snow accumulations will generally be a half inch or less with the higher terrain in the Poconos and southern Catskills approaching an inch. By this afternoon surface ridging from the Ohio Valley will make for some sunny breaks as high temperatures range from the upper 30s to middle 40s. High pressure will reside over the area tonight providing mainly clear skies and cold temperatures as lows drop into the lower to middle 20s. On Wednesday, high pressure will move to the east coast as the next low pressure system moves into eastern Canada. A warm front associated with this system will being a chance for rain showers during the afternoon mainly west of I81.
A weak cold front was located over northwest Arkansas this afternoon, and this front will push across the state overnight. As high pressure builds in from the northern Plains, tomorrow should see temperatures remain below normal, albeit with plenty of sunshine. The high pressure system will move off quickly to the southeast, and a return flow should become established on Wednesday.
134 AM EDT Tue Apr 10 2018 MVFR/IFR cigs/vsbys will begin to impact KSRQ, KLAL, KPIE, and KTPA terminals the remainder of the night and into Tuesday as lower cigs and shra/tsra begin to develop over the region ahead of a cold front. High pressure then moves over the region and shifts eastward Wednesday through the end of the week, with winds becoming easterly and then southeasterly.
338 AM MDT Tue Apr 10 2018 Synoptic Setup: near term begins with the High Plains of the CONUS and Canada under warming northwest flow. tot eh west a ridge runs up from the Desert Southwest through California, the Pacific Northwest, and crests over British Columbia. A trough lies off the coasts of each and backs north over the Aleutians. Ridge will pass over the area leaving clear to partly cloudy skies and dry conditions in the afternoon. brief light showers should start off as rain, but could quickly transition to snow with about an hour of a window for a couple hundredths of freezing rain or sleet. Wednesday Night: Meso-ridge will pass across the area allowing conditions to remain dry and warm slightly.
150 AM EDT Tue Apr 10 2018 Some forcing ahead of the upper trough to the west and near a weak boundary could bring in a few isolated showers a bit farther north than expected so brought up low end pops accordingly, though main forecast looks largely on track and previous discussion Baker. Weak high pressure across the Carolinas will weaken as a boundary to the south tries to lift north into far southern GA tonight. Meanwhile, a positively tilted mid level trough will dig south and east tonight through Tuesday. High pressure will continue to build into the region through Tuesday night.
Several wave of low pressure will be along this front enhancing low level convergence and combined with anomalous PWATS of up to 1. Cooler lows in the 40s to lower 50s expected on northerly flow.
Positive tilted trough axis extended from the OH valley across the Ozark Plateau to the Red River. The low level atmosphere remains too dry to support precipitation and have kept today's forecast dry. Despite modest cold air advection, temperatures should still warm into the lower 60s this afternoon. Another chilly night is ahead as a surface/850 mb ridge axis drifts into the TN valley.
255 AM MST Tue Apr 10 2018 Strong high pressure through Wednesday will bring well above normal temperatures to the region. High temperatures will reach into the upper 90s today and Wednesday across the lower deserts.
610 AM EDT Tue Apr 10 2018 High pressure across Maine will retreat east and into the Atlantic today. Low pressure will pass well south of the region tonight as a weak trough crosses the area this evening. High pressure builds back into the area late tonight and Wednesday.
326 AM CDT Tue Apr 10 2018 Latest water vapor imagery in combination with RAP 500 mb analysis shows a large upper level ridge sliding east over the western U. At the surface, high pressure continues to push south through the region with strong low-level warm air advection already underway.
/Today through Tonight/ High pressure in place across the state, centered off to the southwest currently, will slide further south this morning with return flow setting up across the state today. This will usher in strong waa with temps climbing from around -9C aloft currently to around +4C by late this afternoon, and moisture advection in the lower to mid levels. Therefore with the snow cover in the north and cloud conditions have kept temperatures cooler north and only into the mid 40s while sites in the south central/southwest should see temps into the 50s.
237 PM MST Wed Dec 13 2017 Snow will end across southwest Montana by tonight, with high pressure building aloft and skies clearing across the area for Thursday.
Cold front draped across srn OK will continue to slowly make its way through our region late tonight into Thursday morning, reinforcing the relatively cool airmass already in place.
423 PM EST Wed Dec 13 2017 Low pressure will continue to lift north of the region tonight. A large area of Low pressure will remain to our north on Thursday as a weak low slides well to our south.
Impacts for the next couple systems appear to be less as there is less wind and the threat for freezing rain is negligible.
A gradual moderation in dewpoints expected by late in the day as high pressure axis shifts to the south over the Gulf. Southwest flow and bump in moisture means low temps stay above freezing for most tonight, with the exception being areas north of Highway 84 where temps could dip to around freezing.
As the base of the eastern CONUS trough flattens and lifts north a bit, the local area will see an increase in high level cloudiness as moisture transported along the southern stream feeds into the base of the trough. At the surface, winds will generally be west- southwesterly, resulting in a slightly more moist airmass and thus slightly warmer overnight lows. Expect lows in the upper 30s across south Georgia and Alabama, and in the lower 40s across north Florida where high clouds are expected to be thicker.
CURRENT WEATHER PATTERN HAS A DEEP LOW PRESSURE SYSTEM ENTERING WI WITH AN INVERTED TROF IN IDAHO CREATING SOME CLOUDINESS AND PRECIPITATION IN CENTRAL MONTANA. THE UPPER LEVEL PATTERN SHOWS A STRONG LOW PRESSURE OVER THE BAJA WITH A RIDGE OVER THE EASTERN PACIFIC SLANTING INTO THE PACNW. ANOTHER DEEPER LOW IS OVER THE EASTERN GREAT LAKES WITH A LARGE TROF OVER THE NE US. FRANSEN AN UPPER RIDGE OVER THE PACIFIC COAST WILL REMAIN IN PLACE TODAY AS AN UPPER LEVEL TROUGH REMAINS TO THE EAST OF THE FORECAST AREA. COOLER TEMPERATURES WILL PREVAIL TODAY WITH HIGHS IN THE 30S NE AND 40S SW WHICH IS STILL ABOUT 10 TO 15 DEGREES ABOVE NORMAL. THE UPPER RIDGE GETS MOVED EAST ON THURSDAY BY AN UPPER TROUGH MOVING THROUGH THE GULF OF ALASKA AND EASTERN PACIFIC.
1232 PM EST Wed Dec 13 2017 A strong cold front continues to push off-shore early Wednesday morning, leaving in its wake much colder temperatures and strong wind gusts. High pressure will briefly build in Wednesday ahead of a fast moving upper level disturbance expected to move just north of the region Wednesday night. Temperatures will start the day in the low 20s before rising steadily into the upper thirties west to low forties east, remaining roughly 10 degrees below normal for this time of year.
High clouds associated with an active subtropical jet have kept temperatures down in the upper 50s and lower 60s, while temperatures in north Texas are in the lower 70s under clear skies. These clouds combined with light southwest winds will keep temperatures up in the lower to mid 40s tonight. PVA associated with this cutoff low combined with a subtropical jet and very weak isentropic ascent to our south at midlevels will allow for a slight chance of showers mainly south of the Highway 90 and Interstate 10 corridors. Hi-res models suggest this precipitation shield and cloud shield will be very defined as weak isentropic descent will be over the northern half of our area, so lows tomorrow night will range from the lower to mid 30s in the northern Hill Country to mid 40s over our southern counties.
Southwest winds this afternoon will become light overnight, in advance of a cold front on Thursday. /issued 411 AM CST Wed Dec 13 2017/ (Today and Tonight) After yesterday's cold front, temperatures today and tonight will rebound. Lows tonight will be warmer than this morning's lows, mainly in the mid 30s.
944 AM PST Wed Dec 13 2017 Many of the lowlands across eastern Washington and north Idaho will continue to be covered by low clouds.
Surface ridging from South Tx to SETX to SrnLA with light southwesterly winds across the area terminals. Cold front crossing OK at 18z. Cold front should arrive into the CLL area around 16-17z Thu possibly with some mid clouds. Tonight will be not as cold as we await for the arrival/passage of our next cold front during the day tomorrow.
The NAM and much of the mesoscale model suite now depicts a fairly deep low-level moist layer that would be problematic in that there would be potential for freezing fog or low stratus with either granular snow, freezing drizzle, or frost (or some combination) developing on exposed surfaces across southwest Montana.
Satellite imagery shows an upper low over northern Baja California while a strong short wave trough was diving southeast across the central Rockies. The short wave trough will move through the Four Corners region tonight while the upper low weakens into a wave as it drifts southeast. The short wave trough over the Rockies will move into the southern plains on Thursday while a short wave trough moving through the Great Basin reforms the upper low over central Baja California into northwest Mexico Thursday night. The first short wave trough advancing eastward through the plains will send a cold front into the region Thursday evening. Expect a large area of showers to move across South Texas with the highest chances/categorical across the southern Coastal Bend into the coastal waters.
The warmer temperatures further south will be left as they are with W-SW winds prevailing for much of the afternoon.
/issued 906 AM EST Wed Dec 13 2017/ High pressure ridging east from the western Gulf of Mexico will keep rain-free conditions, north-northeast winds and cooler temperatures over the area today. High pressure is building into the region from the west which has allowed for the winds to veer and decrease to the north-northeast around 10-15 knots this morning. As this high slips eastward, the winds will further decrease by late this evening and then shift to the southwest as the high moves east of Florida on Thursday.