Aikyam-Lab/Synoptic-Bench huggingface dataset:
324 AM EST Sun Feb 19 2017 High pressure will then extend across the region through the week before a cold front likely moves through Saturday. Cooler high pressure should then return for the end of the weekend. At 320 AM, water vapor loop showed a band of mid level vorticity swinging across the Piedmont and Midlands of the Carolinas, ahead of a amplified H5 trough. NAM12 indicates that the axis of the H5 trough will pass overhead around 15z, with heights rising steadily after 18z. Sky cover should decrease as the trough axis pushes east of the area today. I will use a blend of the temperature guidance, forecasting high temperatures in the low to mid 70s. Low temperatures should range from the upper 40s across the inland counties to the low to mid 50s near the coast.
323 AM EST Sun Feb 19 2017 A cold front will move south through the region tonight.
252 AM CST Sun Feb 19 2017 Upper low has pulled east of the area with a few lingering light showers on the plateau. Upper ridging will quickly build in during the daylight hours today allowing temperatures to climb into the mid 60s to lower 70s. The first will be an upper low along the gulf coast.
316 AM EST Sun Feb 19 2017 A weak cold front will cross the area today.
1250 AM EST Sun Feb 19 2017 A weak cool front will drop south through the region today followed by slightly cooler air.
425 AM EST Sun Feb 19 2017 High pressure building into the area will provide fair weather today. There will be some morning clouds and fog over southern portions of the area, but sunny skies and unseasonably warm temperatures should return this afternoon with highs generally in the lower 60s, except only in the 50s near Lake Michigan.
Dewpoints are currently in the lower 40s across parts of south central Nebraska. An upper level trough will lift from the Desert Southwest across the Four Corners Region as the downstream upper ridge axis advances across the Mississippi Valley. The upper trough axis will lift into western Nebraska.
1236 AM EST Sun Feb 19 2017 Low pressure tracks along southern Canada, and into northern New England tonight, and then into the Canadian Maritimes Sunday into Sunday night. A cold front with the low passes through the region late tonight into Sunday morning. High pressure builds in behind the low Sunday night.
Plenty of moisture out there this morning as high pressure builds in. Once the low clouds and fog burns off this morning, sunshine will be abundant and temperatures will climb in to the 70s area wide. Uncertainties for the fog development will be how low do the dewpoints reach this afternoon and can any of the low level moisture work out.
317 AM EST Sun Feb 19 2017 A weak cold front will approach from the north today and will drop south through the region tonight.
Main concern for this morning is light freezing rain developing across the north central. Blended previous forecast highs with the warmer MAV guidance for today. A cold front associated with it will shift through western and central North Dakota, with increasing chances for precipitation (mainly rain toward 06z and onward).
Updated to match current temps across the southwest which are running warmer than forecast. This may spark some light rain/freezing rain across far north central North Dakota in the morning. As the main upper level trough moves into the plains Sunday night more widespread rain is expected.
330 AM CST Sun Feb 19 2017 A strengthening area of low pressure west of the region will bring breezy southerly winds and warm temperatures into the area today.
Snowfall will continue in the higher elevations of northeastern Nye County with minor accumlations. A weakening low pressure system will continue to track eastward across southern Nevada, before exiting Sunday.
1232 AM EST Sun Feb 19 2017 A weak cold front will drop southward across the area this afternoon and evening and will stall out across the region tonight and dissipate.
Tonight, as the cold front continues to draw the colder air further south, another band of snow fall will set up across our southern zones - basically from Flatwillow to Cohagen. Tuesday, snow will continue across our southern zones as the upper-level low pressure trough quickly swings through the region.
209 PM EDT MON OCT 10 2016 High pressure keeps dry weather going through mid weak.
The low levels will remain quite dry, so showers will have a hard time making it all the way to the ground. The tight pressure gradient between low pressure over the Plains and high pressure over the Northeast will keep south winds elevated through the day. Medium Mid level southwest flow will be strong ahead of advancing northern Plains trough. Should be a rather mild night with thermal ridge and low level southerly in place.
High temps of upper 70s to low 80s are expected today which is slightly cooler than yesterday due to the little bit of cloud cover and the slight cold air advection. Lows tonight will also be slightly cooler due to the same reasons added with the clearing skies that will increase radiational cooling. Today's easterly winds will not be as breezy as yesterday's northerlies, since the pressure gradient has relaxed somewhat with the high pressure's influence. VFR conditions are expected through the TAF period, compliments of the upper and surface ridging.
329 PM EDT MON OCT 10 2016 High pressure keeps dry weather going through mid weak.
223 PM CDT MON OCT 10 2016 Forecast discussion for routine afternoon forecast issuance Warm again tomorrow, then turning cooler mid-week.
High temps of upper 70s to low 80s are expected today which is slightly cooler than yesterday due to the little bit of cloud cover and the slight cold air advection. Lows tonight will also be slightly cooler due to the same reasons added with the clearing skies that will increase radiational cooling. Today's easterly winds will not be as breezy as yesterday's northerlies, since the pressure gradient has relaxed somewhat with the high pressure's influence. The high was off to the northeast and providing the continued easterly flow.
454 PM EDT Mon Oct 10 2016 A drier and cooler airmass has moved in today, along with gusty northeast winds. Through the remainder of the week, high pressure over the south will maintain the northeast flow with daily chances of showers with temperatures near normal for this time of year. Less oppressive conditions were also noted today, due to the lower than average maximum temperatures and dewpoints down to the mid 60s. High pressure over the northeast Gulf will maintain similar conditions for tomorrow with a very slight increase in maximum temperatures and dewpoints.
243 PM EDT Mon Oct 10 2016 Cool and dry Canadian high pressure will build over the region this week, bringing the coolest air of this early Fall season.
Under these partly to mostly cloudy skies temperatures are running between 6 to 8 degrees warmer than yesterday. Durango and Pagosa Springs are both running 16 degrees warmer than yesterday.
Dewpoints were in the low 40s this morning but will increase to at least the low- to mid-50s overnight for the I-35 and coastal plains areas. Tuesday will be slightly warmer than today with highs reaching into the mid and upper 80s as 925mb temperatures increase with the southerly warm flow.
High pressure will continue to drift to the east today as a frontal system develops over the Northern Plains. Boundary layer south winds will bring in a warmer air mass into the region today. Expect a break in the precipitation for the rest of Tuesday as strong surface cold front approaches northwest Wisconsin.
While the lake breeze is not expected to push to much farther inland, it is resulting in slightly cooler temperatures (mid 60s) on the lakefront. Elsewhere, temperatures have warmed into the low 70s. Temperatures on Tuesday may end up another 1 to 3 degrees warmer than today, which would result in middle 70s in most locations.
Boundary layer progs suggests the lower levels nearing saturation late to the north of a Douglas to Alliance line where some areas of fog may form. Looks like enough low and mid level moisture for isolated to scattered afternoon showers and a few thunderstorms with a stark difference in high temperatures on either side of the cold front.
Light NE to light and variable winds will be in place with high pressure in control. A few showers will be possible across the Lower Texas Gulf waters late tonight into Tuesday as low level moisture increases. Broad mid level ridging will build overhead on Tuesday resulting in warmer temperatures.
A short wave trough, currently building into the Mid-West will basically just "bounce off" the ridge as it shifts northeast through the Lower Ohio Valley on its way into Southeastern Canada. In addition, the lower level extension of this massive ridge has cut off any return flow off the Gulf of Mexico so the only evidence that this weak feature will be near the area on Tuesday will be a few cirrus clouds drifting over the region. Temperatures should even be a degree or two higher in most areas topping out in the middle to upper 70s with nearly full sunshine under the influence of the ridge. Lows will range from the lower and middle 40s over much of the northern half of the forecast area to the lower 50s.
A weak cold front will cross the forecast area Tuesday into Tuesday night, though impacts will be limited.
245 PM CDT MON OCT 10 2016 WV imagery shows the upper trough approaching the MS Valley, leaving West Texas and Southeast New Mexico under generally zonal flow aloft. Otherwise, temps have rebounded back to above normal, w/models trending even warmer than they have the past few days.
131 PM EDT Mon Oct 10 2016 High pressure will maintain dry weather through mid week.
233 PM EDT Mon Oct 10 2016 High pressure will maintain dry weather through mid week.
This brief breaking down of the dominate ridge of high pressure will allow a weakly inverted trough. As the mid level trough approaches the RGV. it will generally dissipate as it encounters the eastward expanding H500 ridge that will build back over Northern Mexico/Southern Texas. the westward moving trough will be pushed southward as high pressure centered over the East Coast builds down into the Texas Gulf Coast. The building back of the high pressure will lead to near normal lows.
Flight weather conditions that impact aviation during the forecast period will be nearly non-existent as a ridge flattens a bit with a weak upper wave passage. Typically, in this type of mid October pattern, with efficient radiation, a weak downslope flow off the higher terrain and pooling of chilled air in the valley, fog formation is possible around tri.
Warm, fall weather is being observed across northern Arizona this afternoon with breezy southwesterly winds over the higher terrain.
316 PM EDT Mon Oct 10 2016 Cool and dry high pressure will build into the area through mid week.
235 PM EDT Mon Oct 10 2016 Canadian high pressure will build across the northern Mid- Atlantic through tonight before shifting offshore during the middle of the week.
357 PM EDT Mon Oct 10 2016 Post Tropical Storm Matthew will continue to move farther offshore through tonight, allowing a large area of high pressure to build over the eastern United States. The center of the high will slide off the New England coast and into the northern Atlantic through Midweek. Latest Upper air analysis features upper level ridge building across the eastern conus. Lows will be in the lower to middle 40s inland/piedmont, and in the upper 40s to mid 50s near the water/at the coast.
High temps of upper 70s to low 80s are expected today which is slightly cooler than yesterday due to the little bit of cloud cover and the slight cold air advection. Lows tonight will also be slightly cooler due to the same reasons added with the clearing skies that will increase radiational cooling. Today's easterly winds will not be as breezy as yesterday's northerlies, since the pressure gradient has relaxed somewhat with the high pressure's influence. High pressure ridge will remain over the Northeast.
Weak trough laying across the panhandle of ID will sag farther south and bring a threat of precipitation tonight and Tue for the central Idaho mountains and areas mainly north of Pocatello. However, for Tue night, temperatures will be under or approaching the freezing point, so Wed morning could require a Freeze Warning.
327 PM EDT Mon Oct 10 2016 Surface analysis this afternoon indicating high pressure centered north of the area across the Eastern Great Lakes. Upper level wise we are under a ridge, but a 500 mb short wave will eject into the upper midwest tonight. This and the low level WAA will lead to warming temps both max and min through the end of the period. The period will begin quiet and warm with high pressure in place.
306 PM EDT MON OCT 10 2016 Dry and cool high pressure will dominate through midweek. A dry cold front will push through the region late in the week. High pressure will return for the weekend. An h5 ridge axis will also be near the area through the period. High pressure centered over the New England states will continue ridging into the region through the period.
316 PM EDT Mon Oct 10 2016 High pressure will slowly shift over our region tomorrow.
1119 AM MDT MON OCT 10 2016 18Z TAF CYCLE There will probably be some cumulus clouds and perhaps a stray shower or thunderstorm across the northern and western mountains today, but the chance for precipitation will be slim as a weak ridge of high pressure moves overhead. A lee trough at the surface will induce gusty winds at times across east central and northeast areas until sunset.
Cross sections indicate 20-30kt cross barrier flow so some gusts up to 40 mph in the higher mountains and east slopes. Weak surface cold front will brush far Northeast Colorado early Tuesday morning but looks to have minimal effect except cooler temperatures.
Winds in east Colorado have become gusty behind this trough but should not be persistent enough for critical fire weather conditions to be met. A pre-frontal trough should slip in from the north by early tomorrow morning. Temperatures might be slightly cooler behind the trough, primarily for southwest Nebraska and extreme northeast Colorado. Other than the upper 70s forecast for those areas, locations south of the KS/NE border can expect highs in the low to mid 80s.
Most locations in the Frost Advisory had fallen into the 30s by the start of the advisory with many locations in the Thumb (and here at the office in White Lake) flirting with the freezing mark by 2am. Flow aloft will switch from northerly to westerly as the ridge axis traverses the region. This should put highs in the low 60s. The long wave pattern will amplify going into Tuesday as a strong wave begin to rotate around the dominate northern Canadian upper low down into the Northern Plains. This will in turn amplify the ridge over the Great Lakes. With high pressure lingering over the region and a dry column in place, it appears this wave will only result in some mid/high clouds.
Otherwise expect another cool night with mrng lows ranging from the low 40s over nern AL and portions of our TN zones to the mid/upper 40s elsewhere.
Local nor'easter conditions will continue through the period between high pressure wedge axis across central Ga and coastal trough offshore of the SE Atlantic coast. then by Tue afternoon into Tue evening introduced a low 15-20% chance of a coastal shower due to deeper low level moisture and increased coastal convergence as the trough axis offshore amplifies and retrogrades west. Below normal temperatures will continue and range from max values in the low/mid 70s coast to upper 70s/low 80s well inland. Low temperatures tonight will range from the mid/upper 60s coast to the lower 50s well inland across inland SE GA and the Suwannee River Valley. A few normally cooler locales across our inland western zones could dip into the upper 40s tonight given current dew pts in the mid/upper 40s across Jeff Davis and Coffee counties.
This however will begin to change the next 24-36 hours as high pressure moves farther east generating a weak onshore flow, i. Overnight lows will not be as chilly as they were this morning as we do not expect dewpoints to be as dry, however, we did go cooler than guidance across the Victoria Crossroads area with their cooler starting point and lower dewpoints.
511 PM EDT Mon Oct 10 2016 Cool and dry Canadian high pressure will build over the region this week, bringing the coolest air of this early Fall season.
126 PM EDT Mon Oct 10 2016 High pressure will maintain dry weather through mid week.
302 PM EDT Mon Oct 10 2016 High pressure will build in from the west tonight and will crest over the region on Tuesday.
307 PM EDT Mon Oct 10 2016 High pressure over the central Great Lakes will move to New England by Tuesday.
233 PM EDT MON OCT 10 2016 High pressure keeps dry weather going through mid weak.
253 PM EDT MON OCT 10 2016 Dry and cool high pressure will dominate through midweek. A dry cold front will push through the region late in the week. High pressure will return for the weekend. An h5 ridge axis will also be near the area through the period. High pressure centered over the New England states will continue ridging into the region through the period.
High pressure is moving east across the Great Lakes region this afternoon. This ridge had been producing a generally northeast flow over the past couple of mornings which was providing pleasant weather. The ridge will continue to move into New England and this will turn the flow off the gulf which will increase moisture levels and temps.
High pressure continues to build over the area form the north and east, maintaining the trend of mostly clear skies, pleasant humidities, and light to moderate northeast to easterly winds.
An upper level high pressure ridge centered over Chihuahua, Mexico will gradually expand north and east resulting in upper height rises across all of the southern Great Plains through Tuesday. Highs Tuesday expected to reach upper 80s most areas on the Caprock and probably just into the lower 90s at a few places in the Rolling Plains, around a dozen degrees above normal.
631 PM EDT Mon Oct 10 2016 High pressure will move east into New England Tuesday.
Ridge will shift east of the mid state later tonight, setting up return southerly flow and slightly warmer temperatures over the next couple of days.
The main interaction of the arctic cold front and steady stream of moisture has subsided across northwest Montana this afternoon.
So, with generally clear skies, light or calm winds and a dry airmass still in place, expect another cool night with lows around 50 degrees north to to the lower and mid 50s elsewhere.
Main challenge through the day will be timing of slow moving cold front and related temperatures across the FA. A few spots right along the trough axis, currently across the central CWA, have gone calm in winds and temps have dropped down to the upper 30s. Southwesterly flow aloft will continue through today and tonight as a positively tilted trough digs into the Northern Rockies. Tonight, the cold front will push the rest of the way through the CWA.
1153 AM MDT Mon Oct 10 2016 Flat westerly flow will redevelop over Colorado today, as short wave trough exits the state early this morning, with clouds and precip shifting eastward through Kansas. Most precip should end quickly this evening, though a few showers could redevelop over the higher peaks of the central mountains after midnight as mid level moisture increases slightly.
A trough of low pressure aloft this afternoon was approaching from the West and Northwest and providing mainly just clouds across the county warning area. After passage of the upper trough by mid day Tuesday may help provide a very slight chance of rain for parts of Deep East Texas, but will quickly be replaced by a flat ridge of high pressure that will build East across the gulf coast states with a nearly zonal flow into mid week for our zones.
235 PM CDT MON OCT 10 2016 A frontal boundary will continue to drift southeast overnight, with a cooler airmass gradually sinking into the cwa. Tuesday night becomes fairly active as mid level trof moves across the forecast area. According to the GFS a pretty good pv anomaly/trop fold will accompany the trof passage.
It'll bring wind and showers to the mountains with some spotty activity over the lower elevations into Tuesday evening.
The strongest winds are situated east of the trough axis stretching from Elkhart, KS to Bushland, TX while lighter winds sit to the west.
A weak upper level disturbance will bring an increase in mid and high cloud tonight, but the continued influence of high pressure at the surface will keep conditions dry through Tuesday night.
A large Pacific trough tapping cold air from the Northwest Territory. Yukon and Alaska will push a cold front south across the area tonight. Ahead of the cold front very windy conditions will exist with gusts of 45 to 55 mph over and near the east slopes of the mountains. behind the cold front strong north winds will blow across the northern Bighorn basin and eastern Johnson county. Tuesday Night Through Monday Temperatures will fall into the lower twenties and teens in the north by tuesday night.
321 PM EDT Mon Oct 10 2016 Tight pressure gradient ahead of troughing over the Plains resulted in pretty gusty south/southwest winds across the area today.
401 PM CDT MON OCT 10 2016 Latest surface analysis showed a 1028mb high over the eastern portion of Great Lakes with the ridge axis to northwest Gulf of Mexico. An inverted trough was located over Bay of Campeche to southwest Gulf of Mexico. Surface dewpoint readings increased up to the lower 50s across southwest Mississippi and 60s elsewhere. A trough axis was located east Nebraska to Louisiana. hence the high clouds today.
Cold front continues to propagate slowly east and now through roughly the NW 2/3 of the forecast area or a line from BDE-FAR-Lisbon. Main mid level trough will begin to swing across the northern rockies/northern high plains Tuesday.
136 PM EDT Mon Oct 10 2016 High pressure building down from Canada will bring cooler air to New York and Pennsylvania today through Tuesday morning.
138 PM EDT Mon Oct 10 2016 A dry airmass will remain in place across the region through mid week as high pressure slowly shifts off to the east.
An upper level trough is currently moving off to the east through the central and southern plains. This will shift our upper level pattern to dry zonal flow along the northern periphery of ridging to our south. So, skies will remain mostly clear through Tuesday with warmer than normal afternoon highs in the mid and upper 80s, and lows tonight near normal in the low to mid 50s.
Surface wise, an enormous region of high pressure is covering the eastern half of the United States with an extensive ridge reaching down the Florida peninsula and into our area. Little change in the overall synoptic pattern with our region lying on the southern periphery of a massive high pressure system covering the eastern and southeast United States.
/18Z TAFS/ High pressure and mostly clear skies will prevail with winds mainly below 10 knots through the period. Skies are mostly clear and winds are light and this has allowed temperatures to drop into the mid 40s Hill Country to the lower 60s along the Rio Grande. On Tuesday, the models develop a coastal trough early, then move this feature inland into the coastal plains in the afternoon. This trough along with daytime heating should help develop some isolated showers and thunderstorms for areas generally east of the Highway 77 corridor in the afternoon.
Tonight will be nice as well as the southerly winds continue and keep temperatures slightly warmer in the lower 60s.
319 PM EDT Mon Oct 10 2016 A large high pressure system overhead will keep our skies clear tonight and allow tempertures to tumble. Widespread frost and freezing conditions are likely. Warmer air will return for Tuesday under mostly sunny skies. but will dry out quickly aft dark with subsidence under the high. A quiet period of seasonable weather is forecast for mid week, as high pressure slides through the northeastern United States. Afternoon temperatures will warm into the lower to middle 60s while overnights remain cool.