Aikyam-Lab/Synoptic-Bench huggingface dataset:
1158 PM EDT Mon Aug 21 2017 High pressure moving off the Mid Atlantic coast will bring a warm and increasingly humid southerly flow to the region into Tuesday. A strong cold front will move through the region late Tuesday and Tuesday night. Cooler and drier conditions will return for the second half of the week. Activity continues to weaken overall but still some local heavy rainers over the lower Susq River Valley early tonight. Patchy fog expected especially over portions of the Lower Susq. Mins will range from the lower 60s north to the lower 70s southeast. The front should bring in much cooler weather Tuesday night.
The far eastern counties are several degrees cooler than originally forecast, but I expect the clouds to clear out of that area in the next hour or two and allow them to warm out of the 40s rather quickly.
1241 PM EST Mon Feb 26 2018 Cold front across the area will move offshore this evening.
252 PM CST Mon Feb 26 2018 Clear skies and weak upper level ridging has allowed temperatures to climb above normal today with highs in the upper 50s to lower 60s. Mild temperatures will continue through Tuesday as downstream weak upper level ridge persists over the region in response to an upper level trough digging into the southwestern CONUS. Couple that with strong WAA getting underway Tuesday and highs will climb into the low to mid 60s.
103 PM EST Mon Feb 26 2018 Cold front across the area will move offshore this evening.
Through 19z today, the cold front had moved into the Southeast Florida Big Bend and had just about passed Perry. Behind the front, some cooler air has arrived with an area of extensive low level cloudiness, though this has been eroding some on the northern edges from daytime heating. For now, expect skies to be mostly cloudy after sunset, though temperatures will be cooler than previous nights with lows in the lower 50s in our northern zones to upper 50s in our southern zones.
Southwest flow aloft will increase later today as a strong upper trough digs along the CA coast. Return flow should commence this afternoon as surface ridging moves east and height falls develop over the Rockies. A low level thermal ridge will set up across the Big Bend and Trans Pecos leading to temperatures about 10-15 degrees above normal.
Visible satellite trends show this lower deck across the Brazos Valley mixing out and anticipate VFR to prevail at all sites by 19-20Z. Surface ridging over the Ohio Valley will continue to slide east today and tonight, allowing northeast winds 5-10 knots this afternoon to veer to the east after 00Z. Winds may shift to the southeast or south late in the TAF period as the stationary front off the coast lifts inland as a warm front. A warm front moving onshore across the southwestern CWA will increase early Tuesday's light precipitation chances and nearshore/local bay fog development probabilities once again. showers and storms focused along and north of the warm front across the northern third of the forecast area.
There was an area of low pressure over southern Manitoba, and an area of high pressure across the central plains.
1138 AM CST Mon Feb 26 2018 Even warmer conditions are expected today although it will also be windier with gusty south southwest winds.
220 PM EST Mon Feb 26 2018 High pressure will bring clear skies and light winds through Tuesday. Lows tonight will be in the low 30s.
Temperatures will be slightly cooler with winds shifting a little more northwesterly, but highs will still be in the upper 20s to lower 30s.
In-conjunction with the trough, strongest winds will likely be across the OK Panhandle along with the central and western Texas Panhandle w.
The cold front has moved east of all the terminals as of 18z today. At 16 UTC the cold front was located roughly along a line from near Mexico Beach to Quitman, GA to just north of Valdosta. A narrow line of showers with a few thunderstorms was occurring just ahead of the cold front and is moving to the east around 40 mph. Models this morning have been too slow with the progression of the cold front across the area so have made some significant updates to the forecast based mainly on current radar trends.
241 PM EST Mon Feb 26 2018 Disturbance and associated precip has had rapid progression in already exiting the eastern part of the CWA so have trended now to dry majority of fcst period as high pressure should quickly dominate the regime.
232 PM EST Mon Feb 26 2018 High pressure will bring dry weather and mild weather through Tuesday night.
216 PM MST Mon Feb 26 2018 Current surface analysis shows low pressure over western Manitoba, with a cold front stretching southwest across western ND into southern MT. Upper level analysis shows a large scale trough over the western US, with southwest flow aloft from the Rockies into the Plains. The trough to the west will dig south into the southwest US and then track east across the southern Plains and southeast US mid to late week. Northern stream flow over our region will remain near zonal and mainly dry, with some ridging moving across our area later in the week.
The low clouds across the southern areas should continue to erode during the first few hours of the TAF period, and all TAF sites should see VFR conditions by 26/20z. /issued 1031 AM CST Mon Feb 26 2018/ Weak upper-level ridging allowing for dry conditions and improving sky conditions across the region. Luckily the heavier rainfall will taper off after midnight as the warm front shifts out of the forecast area. However in its wake the upper level flow returns between an upper level ridge of high pressure over the Central Gulf of Mexico and a closed upper low shifts across the Desert Southwest and the Baja Region.
1140 AM CST Mon Feb 26 2018 Cold front has cleared all land areas. Do expect the lower clouds to the north to break up somewhat by mid-afternoon. /issued 1019 AM CST Mon Feb 26 2018/ Based on radar trends, morning rain chances were lowered to remove mention from most land areas except the lower coastal parishes. Weak cold front will continue to slowly push offshore before stalling later today or tonight and returning north as a warm front on Tuesday. 112z LIX profile indicated the shallow cold front with a mixed layer up to 900ft/270m above which an inversion with 5F/2.
1147 AM CST Mon Feb 26 2018 Fairly quiet period for the short term with a few clouds, a passing clipper, and warmer temperatures the main story. Southerly to southwesterly winds today will usher in warmer temperatures with highs in the middle 30s to low 40s. Temperatures will trend cooler for Tuesday with highs from the low 30s northwest to near 40 southeast.
1244 PM EST Mon Feb 26 2018 High pressure will bring dry weather and mild weather through Tuesday night.
Dry and seasonably mild weather will be the rule in the short term as high pressure retreats eastward under a dry, zonal flow aloft.
Broad surface ridging centered across the Ohio Valley this morning will slowly push south and east early this week with zonal flow aloft over the central US. Southerly flow/warm advection will develop today on the western periphery of the anticyclone to the east. The airmass continues to warm on Tuesday ahead of a weak cold front approaching from the northwest with highs in the 40s and 50s over much of the area, coolest over areas with more snow cover.
1031 AM CST Mon Feb 26 2018 Weak upper-level ridging allowing for dry conditions and improving sky conditions across the region.
Early afternoon water vapor satellite imagery showed a broad WSW zonal flow pattern across the CONUS with a digging H300 trough along the west coast. Skies were clear throughout the state of Kansas with broad southerly flow across the region ahead of a lee cyclone on the Front Range. Winds should decouple by sunset, but a strengthening pressure may result in winds increasing after midnight as the lee cyclone pulls off the Rockies and pulls towards the KS/NE border. Tuesday should see increasing clouds ahead of the approaching upper tropospheric trough, but the low-level theta-e advection doesn't arrive in NE Kansas until after 21Z and have likewise delayed POPs to better coincide with this forcing.
Still a lot of snowcover along the Pine Ridge over northern Sheridan county. Lows tonight will stay up with a weak cold front and wind shift moving across western Nebraska towards sunrise.
206 PM EST Mon Feb 26 2018 Cold front across the area will move offshore this evening.
217 PM MST Mon Feb 26 2018 A splitting upper trough overhead will keep northeast Montana in a dry northwest flow aloft through the week.
254 PM CST Mon Feb 26 2018 A weak cold front will move in from the northwest tonight with a cooler area of high pressure building in on Tuesday. This cold front will result in a period of clouds overnight but otherwise limited impacts. Ridging builds into the area for Tuesday night, and with dry air aloft, we should have good radiational cooling conditions for the overnight period.
1244 PM EST Mon Feb 26 2018 Cold front across the area will move offshore this evening.
Broad mid-upper level ridging will maintain dry conditions through the period. Under sunny skies, with 900 mb temps of -2C to -3C, high temps should climb into the lower 40s over much of the west half of the U. , toward the higher end of model guidance temps. Cooler mid to upper 30s readings will be experienced over the eastern counties downwind of Lake Michigan. Tonight, Mid-level and sfc ridging will maintain dry conditions. Overall, quasi-zonal flow across the CONUS will break down and become highly amplified by the end of the week as a slowly progressive trough, ridge, trough pattern develops across the CONUS. Otherwise, high pressure will take over through the end of the work week and much of the weekend, giving way to dry weather.
237 PM CST Mon Feb 26 2018 Weak upper ridge across the region allowing for mostly clear skies along and north of interstate 20 as well as much of deep east Texas. Weather pattern to shift on Tuesday as upper-ridge shifts east and southwest flow aloft begins to advect pacific moisture across the region.
1136 AM CST Mon Feb 26 2018 A mid-level ridging pattern will continue to advance over the Central Plains today, maintaining fair weather conditions until the next storm system approaches late Tuesday. Ample sunshine today will lead to increased mixing within the lower levels this afternoon. Afternoon highs will top out in the mid 50s to lower 60s across the area, with above-freezing overnight lows as warm advection persists. The persistent warming trend will send afternoon highs into the low to mid 60s Tuesday afternoon. Rain chances will then return Tuesday night within the warm sector underneath a weak mid- level wave ejecting out of a deep southwestern CONUS upper low.
The cold front from this morning comes back through as a warm front Tuesday and just like that Gulf air is back.
1238 PM EST Mon Feb 26 2018 High pressure will bring clear skies and light winds through Tuesday. Lows tonight will be in the low 30s.
At the surface and in the lower levels, there is still a ridge oriented from near 30 N 70 W, with a weakening attendant axis analyzed west southwest from that point to across South Florida and into the SW Gulf of Mexico.
401 PM EST Mon Feb 26 2018 High pressure tonight and Tuesday.
1243 PM EST Mon Feb 26 2018 Cold front across the area will move offshore this evening.
A low pressure system approaching from the northwest will bring increasing southwest winds to the area today.
Current forecast highs look ok for most areas in the northeast/east; but southwest areas could get warmer. Much quieter weather in the short term as high pressure dominated the next couple days. Light winds under the ridge this morning could see a little variability, but will trend more southwesterly as the day goes on. This trend with the winds will keep warmer air moving into the region.
/issued 330 AM CST Mon Feb 26 2018/ (Today and Tonight) Initially west-southwest flow aloft over our area will back to the southwest, as an upper trough dives south along the California coast today and tonight with a closed low developing. Lows are expected to range from the mid 40s across the northwestern part of our area, to the lower 50s in our southern counties.
Temperatures will be mild tonight, due to increasing moisture and cloud cover, with lows mainly in the lower 50s. Highs on Tuesday will range from the upper 60s east, to the low to mid 70s over western sections.
High this afternoon will top out from the lower 60s north to upper 60s south with light northeast winds. Highs should climb into the low to middle 60s. Over the next 48 hours a trough will deepen over the Western US resulting in strong Southwest flow across the Southern Plains and middle to lower Mississippi River Valley. Dew points will creep back into the low 60s and clouds will return to the region.
1131 AM CST Mon Feb 26 2018 High pressure centered over the Ohio Valley will drift east over the next 24 hours which will bring increasing southerly flow back to Missouri and Illinois. Mostly clear sky should prevail tonight as well under broadscale mid and upper level ridging. Other than those spots, think lows will be pretty uniform in the low to mid 40s across the forecast area. The combination of west-southwest flow aloft associated with weak upper level ridging and increasing south-southwest low level flow and attendant WAA should translate to well above normal high temperatures.
North to northeast winds were bringing in a drier air mass this afternoon but keeping temperatures much cooler than the past several days with most temperatures mid 40s to mid 50s even during the mid afternoon hours. Also tonights lows will be the lowest in about 1 to 2 weeks as drier air mass filters in. Expect temperatures to fall to below freezing across the northeast half of the area and mid to upper 30s elsewhere.
Shower activity continues to sweep across the region this afternoon as the cold front hovers just to the south of the region.
1032 AM MST Mon Feb 26 2018 Upper level flow will shift to the southwest today as a trough of low pressure deepens along the West Coast. The southwesterlies will advect warmer air across the region causing afternoon highs to climb to near normal levels. The West Coast trough continues to dig southward with a closed low circulation forming over California's Bay area during the night. Dry conditions continue into Tuesday as the low drifts slowly southward over Southern California. A col between the closed low and the northern stream will set up across Utah allowing deeper moisture to impinge on the eastern Uinta Mountains during the afternoon.
Temperatures are somewhat lower than forecast behind cold front with cold air advection reminding us its still winter.
228 PM EST Mon Feb 26 2018 High pressure will build across the region over the next couple days, bringing dry weather and mild temperatures. Highs will generally range in the middle 40s to around 50 in the normally warmer valleys. Westerly wind will gust this afternoon to around 20 mph making it feel a bit cooler.
315 PM CST Mon Feb 26 2018 Typical south wind in the immediate Red River valley keeping it the coolest this afternoon with temps near 30, while east and west quite a bit warmer as winds more southwest. Low pressure is in central Manitoba this aftn moving east with a weak cold front southwest thru Brandon MB and into NW ND. A tad cooler behind this front. A bit cooler Tuesday but sunshine once again so warmest likely in the trees.
An upper level trough moving south near the Pacific Northwest Coast will continue to split today, with the northern portion concentrating along the US/Canada border through the next 24 hours.
Low stratus will keep temperatures a bit warmer across the Kootenai River Country of northwest Montana.
A trough digging southward along the Pacific coast is the major feature in the western CONUS. The northern portion will become a weak cold front that will pass through the region tonight. Behind this, we should see a brief period of clearing skies Tuesday morning associated with a weak ridge of high pressure before the southern portion of the aforementioned Pacific trough drags another cold front across northeast Montana.
At 16 UTC the cold front was located roughly along a line from near Mexico Beach to Quitman, GA to just north of Valdosta. A narrow line of showers with a few thunderstorms was occurring just ahead of the cold front and is moving to the east around 40 mph. Models this morning have been too slow with the progression of the cold front across the area so have made some significant updates to the forecast based mainly on current radar trends.
255 PM EST Mon Feb 26 2018 High pressure tonight and Tuesday.
317 PM CST Mon Feb 26 2018 As high pressure moves east toward the Mid-Atlantic area and low pressure deepens across the High Plains, southerly flow will increase across the Central Plains tonight into Tue. As the column dries Tue night into early Wed we may see some lingering drizzle as the sfc layer is progged to remain saturated in the vicinity of a cold front meandering across the area. Temperatures may approach freezing near KRSL with some low probabilities for light freezing drizzle, elsewhere temperatures are expected to remain above freezing.
Primarily VFR conditions expected through the TAF period as high pressure over the area will slowly shift east, winds will be less than 10kts. High pressure will be in place at the surface today with quite a bit of sunshine noted, before conditions decline by mid week. High pressure will shift east late today into Tuesday which will provide a return to south/southeasterly winds and moisture will begin to return to the state.
1239 PM EST Mon Feb 26 2018 High pressure over the Ohio Valley will slowly drift eastward by mid week.
1007 AM MST Mon Feb 26 2018 Upper trof continues to push east across the Great Lakes region, with another wave moving into the Northern Rockies, and ridging in between. Surface winds are southwesterly around 10-20 kts, with a weak warm front moving across the CWA. Warmer air will continue to advect into the area today, with the region under southwest flow.
This will help to limit any radiational cooling, and with little cooler air advecting over the area, overnight lows above seasonal expected, though cooler than previous nights.
After morning fog, Tuesday will be sunny under a short wave upper ridge from the northwest.
138 PM EST Mon Feb 26 2018 High pressure tonight and Tuesday.
1250 PM EST Mon Feb 26 2018 Short wave trough and light rain finally moving out of the area this afternoon.
Temperatures this afternoon should climb into the lower 60s as light southerly winds develop and the region see plenty of sunshine.
1244 PM CST Mon Feb 26 2018 No big surprise but temperatures are warming fast in the pine trees east of the Red River valley so boosted highs a few degrees into the lower 40s Waskiskh-Bemidji-Park Rapids-Wadena areas. Warmer also west edge of the RRV in higher terrain. Flat upper level ridge was over the area. A little warmer today. A little warmer today. Weak cold front will propagate through the region. Temperatures will be cooler compared with Monday, but overall still near normal values.
228 PM CST Mon Feb 26 2018 Dry and mild weather will continue through tomorrow as high pressure moves off to the east. Southerly winds will return and this will bring warmer temps to the area by Tue afternoon, with most areas seeing highs in the 60s.
204 PM MST Mon Feb 26 2018 The latest water vapor loop showed a upper trough digging south across the far western CONUS, with west to southwest flow aloft over the Intermountain West and Rockies.
337 PM EST Mon Feb 26 2018 High pressure over the Ohio Valley will slowly drift eastward by mid week.
A weak cold front moving across the panhandle region will slowly push southward through tonight, weakening as it does so. Still, most areas will see temperatures in the low to mid 80s. Surface ridging will remain over the waters today, eventually shifting southward as a remnant front moves into central Florida. High pressure will build in north of the waters by Tuesday, with breezy east to northeast winds nearing cautionary levels offshore Tuesday night.
Winds lowest elevations of the RRV SSE but will turn more southwest this aftn allowing for warming all areas to at or abv freezing. Flat upper level ridge was over the area. A little warmer today. A little warmer today. Weak cold front will propagate through the region. Temperatures will be cooler compared with Monday, but overall still near normal values.
1236 PM CST Mon Feb 26 2018 At Noon CST a weak cold front extended from low pressure in southern Manitoba southwest through Montana. Modest snowmelt across the region this afternoon will inject some boundary layer moisture into the air and as high pressure moves in clearing skies tonight the short range guidance shows scattered areas of fog forming tonight.
It will be short lived, however, as the front once again stalls offshore tonight before lifting back to the north as a warm front Tuesday sparking scattered showers and a few thunderstorms.
Highs should climb into the low to middle 60s. Over the next 48 hours a trough will deepen over the Western US resulting in strong Southwest flow across the Southern Plains and middle to lower Mississippi River Valley. Dew points will creep back into the low 60s and clouds will return to the region.
Cold front will push se across the area tonight bringing in cooler air as winds shift to the north and then ne on Tuesday. High temperatures will be cooler along with cloudy conditions on Tuesday.
Like previous days, isolated showers and storms should form over the higher terrain. An upper level high will remain centered over the Great Basin with generally dry nnw flow aloft over nrn CO. Once again there may be just enough moisture for a few aftn storms over the higher terrain and possibly across the Palmer Divide. As for highs 850-700 mb temps rise a few degrees by aftn so expect highs will be 2 to 3 degrees warmer than yesterday.
Western CWA border area will be on the edge of lift/low-level convergence ahead of upper low dropping across the western Great Lakes. The aforementioned trough will slowly transition east and open through the first half of the week. The region looks to largely remain under an area of subsidence between the Great Lakes trough and low pressure riding up the eastern coast. Therefore have cut back PoPs except over the ridges where sufficient low level moisture and upslope winds could result in light rain and/or drizzle during the day Tuesday.
/Issued 322 AM CDT Mon Aug 28 2017/ A cold front will move across the region Today with little fanfare.
1023 AM EDT Mon Aug 28 2017 Dry and cool weather will continue as high pressure remains in control.
Upper level ridge is centered over the Great Basin this morning, with monsoon moisture streaming up into eastern OR/WA and western ID. The low levels remain dry, and evaporational cooling from any showers or storms that do form will create gusty outflow winds up to 50 mph. Activity will initiate over higher terrain, transferring to the lower valleys by late afternoon on southerly winds aloft.
Strong ridging aloft will keep sunny hot and dry conditions in place today and tomorrow. Highs on Tuesday should be a few degrees cooler than today due to a bit more cloud cover during the afternoon hours.
Upper level low centered over the Western Great Lakes early this morning, with 00z GRB revealing a 500 mb TEMP of -15 C.
1042 AM EDT Mon Aug 28 2017 A ridge of high pressure will remain over Pennsylvania through tonight. A weakening upper low over the Midwest will lift through the region by the middle of the week, as a potential tropical storm along the Carolina coast tracks out to sea well south of Pennsylvania.