Aikyam-Lab/Synoptic-Bench huggingface dataset:
933 PM EDT Sat Mar 25 2017 A cold front stalls south of the region this evening. High pressure builds in overnight from the north and will shift east on Sunday. A warm front will approach from the southwest on Sunday before a weak wave of low pressure forms and passes through the Gulf of Maine Monday.
Much drier mid level air will advect into the area on Sunday from the west on the back side of an exiting upper level short wave trof, so higher rain chances will be in the morning hours on Sunday.
With this cold core low, can't rule out some small hail with stronger updrafts that may briefly try to form over central MO northeast and east of the low this afternoon. Precip chances will shift northeast with the low this afternoon and this evening, but clouds are likely to hang on into Sunday, finally starting to clear from the west during the day Sunday. Multiple layers will be noted circulating around the upper low currently approaching KVIH and departing to the northeast.
This will create lower dew point depressions as ambient coastal /central interior county evening temperatures in the upper 60s to lower 70s fall into the low to mid 60s past midnight.
Upper low over the central Plains will lift to the ne pushing a trough across se Ga/ne Fl on Sunday.
757 PM EDT Sat Mar 25 2017 Low pressure passes to the northwest on Sunday with showers and storms.
732 PM EDT Sat Mar 25 2017 Above normal temperatures will prevail much of the upcoming week as high pressure offshore brings southerly winds.
The frontal system which moved through our CWA earlier today is neither a cold front nor a warm front, but did include some 20g30kt winds. The upper level flow turns more zonal, setting up for a small-scale upper-level ridge coming Sunday night.
/issued 336 PM CDT Sat Mar 25 2017/ (Tonight and Tomorrow) As the upper ridge over the forecast area moves to the east through tomorrow an upper level trough will move over the Southern Plains in its wake. Morning temperatures tomorrow will be warmer with lows in the low to mid 50s. Afternoon temperatures will be 10 to 15 degrees warmer than seasonal norms will highs in the mid to upper 80s.
720 PM EDT Sat Mar 25 2017 Bermuda high pressure will extend west into the Carolinas and VA through Sunday. An area of high pressure located south-southeast of central NC, and a slow moving low pressure system lifting into the mid MS Valley, will maintain warm, modestly moist, sly flow over air area tonight. A lead s/w rotating around the mid MS Valley upper low will lift newd from eastern TN into the central Appalachians Sunday, brushing our nw sector. Still, warm sly flow along with partial sun should be able to boost temperatures back into the low-mid 70s.
A strong southerly LLJ is prog to develop after midnight as a s/w ridge shifts east and heights and associated surface pressures lower across the High Plains as the next s/w trough digs in.
351 AM CST Mon Jan 9 2017 Increasing clouds over the area overnight has resulted in temps remaining a bit warmer and with light winds wind chills are well above advisory criteria and thus coord with WFO BIS and will drop wind chill adv. Moisture in the lowest levels not as much as mid and high levels so do think snowfall will be quite light but with cold temperatures a fluffy inch or so is likely.
359 AM CST Mon Jan 9 2017 (Today and Tonight) Lee trough along the Texas and New Mexico state line will continue to bring breezy conditions today, particularly for the Big Country and Concho Valley. Gusty south winds will continue tonight, keeping lows well in the 40s, with even warmer temperatures in the lower 50s in the Big Country.
203 AM EST Mon Jan 9 2017 A ridge of high pressure will drift east across the region tonight and early Monday.
The latest data, including the RAP and NAM, are more aggressive with the low level moisture return on Monday. /Issued 932 PM CST Sun Jan 8 2017/ Light south winds continue in many locations this evening, and this will help keep low temperatures considerably warmer than the past few nights. Some more sheltered valley locations have seen a substantial enough decrease in winds to allow temperatures to fall into the lower 20s as of 9 pm, and as such sent an earlier forecast update for colder lows in a few areas, but for the most part the going forecast is trending well.
Wind will remain out of the S to SW as leeside trough deepens. /issued 149 PM CST Sun Jan 8 2017/ An upper ridge will begin to expand eastward over the region tonight Monday while the arctic airmass shifts east also, and allows low level winds to veer to the southwest and west.
330 AM CST Mon Jan 9 2017 Arctic high pressure that has been in place across the Mid South over the past few days will move east as upper level troughing over the eastern U.
The resulting southerly fetch will bring increasing Gulf moisture and warmer weather to the area.
1216 AM EST Mon Jan 9 2017 Mainly dry and warmer conditions are expected into Monday with lows in the teens overnight and highs in the upper 20s to near 30 degrees Monday.
Indeed, many locations towards the lower coast that area already underneath clouds have likely already seen their low temperatures tonight and are actually seeing a slow warming the past couple of hours.
1242 AM EST Mon Jan 9 2017 Building high pressure will maintain dry but cold weather through Monday.
150 AM EST Mon Jan 9 2017 Large arctic high pressure will remain centered over NC/VA through tonight with surface winds veering to northeasterly. while GFS and ECM keep showers just offshore with coastal trough. A persistent pattern will be in place this period, with high pressure to the Northeast. Coastal troughing is expected to remain through this period. Models keep the showers associated this troughing mainly offshore. Strong high pressure will build to the North this period. Coastal troughing will strengthen this period, increasing the chance that showers will push inland late in the weekend. Strong high pressure remains centered over mid-Atlantic coast. with onshore flow pattern developing over waters along with hint of a coastal trough which could trigger scattered showers. Deep fetch of northeast winds around large high pressure will keep seas elevated.
432 AM EST Mon Jan 9 2017 Aviation Lake effect snow showers from Muskegon to Ludington will slowly decrease today, then low pressure moving in from the west will bring snow tonight.
332 AM CST Mon Jan 9 2017 High pressure has finally slid off to the east and is now centered along the Atlantic Coast.
A mid/upper level ridge will be building over the region today and tonight, while a southerly flow at the surface will be strengthening as low pressure develops over the Plains.
1250 AM EST Mon Jan 9 2017 High pressure builds in through Monday.
324 AM EST Mon Jan 9 2017 Dry and warmer conditions are expected today highs in the upper 20s to near 30 degrees.
The mundane pattern of no precip will persist today and tonight as weak upper level ridging continues to break down as it moves eastward across the Central Plains during the period. Temperatures will climb well above normal as the aforementioned southerly flow draws much warmer air into western Kansas, pushing H85 temperatures well into the mid teens(C). Much warmer temperatures can be observed tonight with lows only down into the 30s(F) to near 40F in some locations.
1225 AM EST Mon Jan 9 2017 Arctic high pressure crosses overnight.
226 AM MST Mon Jan 9 2017 Upper ridge axis will move into the central plains today while a surface warm front continues to lift north into Nebraska. Nonetheless, expecting high temperatures to reach the lower and perhaps mid 60s in some locations.
The upper flow pattern continues to consist of the broad low around Hudson Bay and the large trough off the Northwest coast. Northeast Montana remains on the cold side of the Arctic boundary while the Pacific trough ejects abundant moisture inland towards Montana. Between the two lows there will be a weak ridge in place over the local region today. The ridge quickly moves across the area to bring us a break before the second wave moves through. Late this afternoon and tonight the western trough begins it movement inland, backing upper flow around to the southwest. The trough disturbance again spreads moisture across the Montana plains.
342 AM CST Mon Jan 9 2017 Increasing clouds over the area overnight has resulted in temps remaining a bit warmer and with light winds wind chills are well above advisory criteria and thus coord with WFO BIS and will drop wind chill adv. Moisture in the lowest levels not as much as mid and high levels so do think snowfall will be quite light but with cold temperatures a fluffy inch or so is likely.
125 AM EST Mon Jan 9 2017 Arctic high pressure crosses overnight.
Although, it appears the highest chances remain over northern and eastern portions of the CWA.
Broken midlevel clouds overnight will become scattered around mid day, and calm winds overnight will become southerly during the day as low pressure develops to the west.
333 AM CST Mon Jan 9 2017 Overnight lows tonight are several degrees warmer than in nights past as southerly winds and warm advection return over the area. Surface pressure gradient tightens up once again today and brings sustained winds 15 to 25 mph across the forecast area, with southern counties on the higher end. Not seeing the potential for the higher gusts as lapse rates in the low levels are modest, but still anticipate 20-30mph with slightly higher in the far southeast. After daytime highs in the 40s, this should aid in keeping overnight lows up from the middle 30s north to the lower 40s in the far southeast. Enough isentropic lift after midnight to bring lower clouds back in and with drizzle chances increasing in the east toward morning, with temperatures above freezing.
High pressure centered over the area this evening will move east, allowing south winds to develop overnight, and increase after 15Z with a few gusts around 20kt.
308 AM EST Mon Jan 9 2017 High pressure will shift offshore of the Outer Banks tonight, but extend across the region through the weekend. Tonight: Cloudy cover will increase slowly overnight from off the Atlantic as a coastal trough matures off the coast in response to high pressure shifting farther offshore of the North Carolina Outer Banks.
Near the surface, a lee side trough of low pressure remains anchored across eastern Colorado.
The ongoing snow on radar is mostly aloft except near Pine Ridge where a dusting or less is suggested by highway cams. dry air at the lower levels is preventing the snow from reaching the ground as anything much more than flurries. The models continue to show a strong cold front moving through 09z- 12z tonight.
336 AM CDT Wed Oct 12 2016 Latest water vapor satellite imagery showing upper level trough digging over the Northern Plains. 08z surface analysis indicate cold front extending from over Lake Superior into northern Missouri. Surface cold front pushes east of the forecast area by 18z today. Colder airmass filters in behind surface front/upper level trough this afternoon into tonight.
149 AM EDT Wed Oct 12 2016 High pressure will slide off the New England coast overnight.
641 AM EDT Wed Oct 12 2016 Rain-free, mild weather will continue through tonight, as high pressure slowly retreats off the coast.
417 AM CDT WED OCT 12 2016 A seasonably strong cold front will progress from northwest to southeast today. Opted to go colder and faster with the cold front based on current observations and high-resolution models. Also increased the magnitude of temperature gradient across the cold front this afternoon. The cold front is forecast to be near the I-44 corridor late morning.
Fresh to occasionally strong northeast breezes cover much of the Atlantic coastal waters off the southeastern United States, including the Keys, between a lengthy high pressure cell from Nova Scotia to the Gulf of Mexico and an intensifying hurricane (Nicole) south of Bermuda.
248 AM EDT Wed Oct 12 2016 High pressure to our east will allow for a light southerly wind today.
141 AM EDT WED OCT 12 2016 Aviation Fair weather will continue tonight before a cold front brings rain and a few thunderstorms Wednesday and Wednesday night.
213 AM EDT Wed Oct 12 2016 Cool and dry high pressure will extend over the area from the north through Wednesday as a weak trough of low pressure lingers offshore.
327 AM CDT WED OCT 12 2016 Cold front has moved through the Northland leading to a cooler Canadian airmass moving in today. With fairly good mixing winds may be breezy into the morning with gusts to 20mph or so, but weaken in the afternoon as high pressure builds in from the west and the winds aloft become weaker. This evening much of the stratocumulus clouds that develop in the wake of the front and associated upper level trough will dissipate leading to clears skies and a cold night - the coldest so far this season with lows in the upper 20s away from Lake Superior, warmer by the lake.
Although not a favorable month and not a very cold air mass in the basin, observations show temperatures are about 10 degrees cooler in the basin than here at Billings.
There should be a short break in the rain about midday before more showers and storms move into the area ahead of a strong cold front.
343 AM EDT Wed Oct 12 2016 Weather pattern remains similar to previous days for the short term period as high pressure remains in control along the east coast. This high pressure will keep a steady northeast flow through the end of the week advecting Atlantic moisture into S Florida.
Upper trough will move to the east this morning. Sunshine will allow for somewhat warmer temperatures today although snow cover will hold temperatures down in some areas.
Thus the freeze warning given the high level of confidence.
Various weak vorticity maxima are progged to pass through SW KS through tonight ahead of approaching strong cold front. Strong cold front with north winds gusting 35-45 mph is expected to clear SW KS by 7 am Wed. Overnight lows will be in the mid 40s expect warmer low to mid 50s near and south of Pratt. Clouds will also clear as high pressure builds into western Kansas.
556 AM CDT Wed Oct 12 2016 Latest water vapor satellite imagery showing upper level trough digging over the Northern Plains. 08z surface analysis indicate cold front extending from over Lake Superior into northern Missouri. Surface cold front pushes east of the forecast area by 18z today. Colder airmass filters in behind surface front/upper level trough this afternoon into tonight.
408 AM EDT Wed Oct 12 2016 High pressure pulls off to the east toward the Canadian Maritimes today while an upper level trough approaches from the west.
Latest observational data is showing that the incoming cold front has now entered the Oklahoma Panhandle. A cold front expected to drop south across the terminals will impact KGUY at 12/10Z, KDHT at 12/11Z and KAMA at 12/13Z. /Issued 336 PM CDT TUE OCT 11 2016/ A cold front will move through the panhandles Wednesday morning. An upper level short wave trough will move through the zonal flow toward the panhandles on Wednesday night.
An upper level short wave trough will pass north of NM tonight, but the surface cold front associated with the upper wave will dip into northeast NM late tonight and press south and west Wednesday into Wednesday night.
314 AM MDT Wed Oct 12 2016 The upper level trough and cool front have pushed through to the front range this morning though some light showers continue over the highest terrain.
/Today/ A strong cold front is nearly through the forecast area and will be East of the area by 12Z. Aloft we will have a trough of low pressure pass across us today. We have a narrow window where we saturate deep enough and have some forcing to produce some showers as the upper trough enters. /Tonight through Tuesday/ Canadian high pressure arrives tonight and will be centered over central Iowa for much of the overnight. Dew points overnight will be in the upper 20s to lower 30s and this will allow temperatures to plummet below freezing in many locations with some potential over northwest Iowa to reach the mid 20s. The freeze warning includes Polk county despite urban temperatures likely remaining above freezing and this is due to the rural areas falling below.
406 AM CDT WED OCT 12 2016 Early morning water vapor imagery together with GFS 500mb heights revealed a large upper level trough over the high plains with large scale ascent over the Upper Midwest. Tonight high pressure will build across the region and skies will clear which should allow temperatures to fall into the upper 20s at most locations, with lower 30s elsewhere.
Could see isolated to widely scattered convection mainly across Deep East Texas and Southeast Oklahoma into the evening ahead of an approaching cold front.
514 AM EDT Wed Oct 12 2016 High pressure will move east of the region today.
406 AM CDT WED OCT 12 2016 Latest WV imagery and UA analysis shows mostly zonal flow aloft on top of weak flat ridging acrs nrn mexico into srn tx. At the sfc, high pres over the ern seaboard was ridging sw acrs LA/ ern TX, resulting in a lt e/se wind acrs the area.
Main question today will be how long the low clouds persist. The low clouds and falling temps aloft will keep things quite cool over the Plains today, with highs as much as 30 degrees lower than yesterday. The mountains will see little impact from the frontal push, so will see more suns and temps also generally in the 50s for the higher terrain. One of those uncommon days when KALS will end up warmer than KPUB. Dry air aloft and the stable conditions brought by the low level surge of cooler air will keep things mostly dry today, aside from some patchy DZ possible in the fog layer. Other showers will be possible across the higher terrain during the afternoon time period.
352 AM CDT WED OCT 12 2016 (Today and Tonight) Cold front is reaching the northern areas of the Texas Panhandle early this morning, on pace to reach the I-20 corridor from Sweetwater to Abilene by early to mid afternoon. A little bit cooler behind the front areawide tonight, as a drier air mass oozes into the area.
Cold Front to Bring Showers and Thunderstorms Today then Elevated convection will continue to develop and spread eastward from Kansas into southwestern Missouri this morning as cold front approaches from the northwest. A much cooler airmass will overspread the Ozarks region tonight with lows falling into the lower and middle 40s. Readings may fall into the upper 30s generally along and north of the Highway 54 corridor.
1115 PM MDT Tue Oct 11 2016 Current surface analysis shows cold front south and east of the forecast area. Temps range from the lower 30s over portions of northeast WY and the Black Hills to the lower 50s across far southern SD. Skies will continue to clear in the morning, with mainly sunny skies through the rest of the day, as high pressure moves over and eventually east of the area. Lows will drop near or below freezing Wednesday night under clear skies.
19Z water vapor imagery shows an upper trough over the northern Rockies moving into the northern plains with zonal flow from the desert southwest into the southern plains. At the surface, a cold front stretched from southwest MN into northwestern NEB. For tonight and Wednesday, the cold front should move through the forecast area through the morning Wednesday bringing a chance for showers and thunderstorms to the area. So the thinking is precip chances will need the lift from the cold front to get vertical motion for storms. Much of the large scale forcing from the upper trough appears to remain mainly north of the forecast, although there is some signs of weak vorticity advection across the forecast area. Have trended Wednesday's highs cooler thinking decent cold air advection and cloud cover will prevent much of a diurnal change.
445 AM EDT Wed Oct 12 2016 High pressure to our east will allow for a light southerly wind today.
334 AM EDT Wed Oct 12 2016 High pressure will allow for dry conditions across the region through most of the daytime hours today. A cold front will move through tonight bringing showers and cooler weather to the region.
537 AM EDT Wed Oct 12 2016 High pressure to our east will allow for a light southerly wind today.
Given the strength of extended jet, the low level leeside trough will be pushed out a bit farther east than usual, and this will actually act to reduce our surface winds with the strongest MSLP gradient off to our east. A strong cold front will continue to push quickly south through the TAF period. Lighter winds and VFR will occur by late afternoon and especially into the evening with the high pressure center moving in.
301 AM EDT WED OCT 12 2016 High pressure keeps dry and warm weather going today.
305 AM MDT Wed Oct 12 2016 Upper level analysis has trof axis swinging through the Northern Plains at the moment, with ridging moving onto the west coast. At the surface, cold Canadian high pressure is located across Montana and the western Dakotas. Upper trof pushes east of the area today as western ridge moves into the great basin area. Lows will drop near or below freezing tonight under clear skies.
647 AM EDT WED OCT 12 2016 Dry and cool high pressure will ridge southward and into the forecast area today.
351 AM CDT WED OCT 12 2016 Mostly clear skies are across the area with an upper trough over the Northern Plains and mostly zonal flow over West Texas and southeast New Mexico. This upper trough will move eastward today and push a cold front south into the CWA this afternoon and evening. Expect high temperatures today to reach the low 90s across central and southern areas of the Permian Basin; however, temperatures today will be very dependent on the timing of the front.
Similar to last night, short term guidance seems to be coming in too warm, even with the cooler observations, lower dewpoints and good radiational cooling conditions. Taking all this into account, ended up lowering the overnight lows just a bit to account for these cooler and drier conditions. All areas should see lows in the lower to upper 40s. By Wednesday afternoon, the models indicate that a weakening frontal boundary will shift southeast into the Lower Ohio valley region with scattered showers/few storms possible.
A cold front extended from southern Iowa into southwest Wisconsin. Otherwise, expect an increasing coverage of showers from west to east by late morning into the afternoon hours as a strong cold front pushes through the region. For tonight, expect a clearing sky and light wind with ideal conditions for frost and freezing temps.
220 AM MDT Wed Oct 12 2016 Latest upper air analysis has a long wave trough moving onto the Northern Plains. Further west a short wave trough was moving onshore. At the surface a cold front had moved south through Kansas and Colorado. Early this morning there may be some lingering rain over the Southwest Nebraska counties where weak lift persists before the 500mb trough axis moves through. North winds will be strongest this morning then become light this afternoon as high pressure builds in. Highs today will be Tonight lows will fall into the lower to mid 30s. A weak upper level short wave trough does move in from the west during the overnight hours, but the lift is very weak.
133 AM EDT Wed Oct 12 2016 A large area of high pressure will cover the eastern United States through mid-week. A dry cold front will push through the region late in the week, followed by another round of high pressure for the weekend.
652 AM EDT Wed Oct 12 2016 High pressure will move east of the region today.
Cold front is moving toward northwest Oklahoma and will move through the TAF sites through the morning with gusty north winds and mvfr ceilings expected behind the front. The second issue will be a cold front moving through the area Wednesday morning, which will bring gusty north winds and low clouds. /issued 225 PM CDT TUE OCT 11 2016/ A cold front will arrive Wednesday around sunrise to northwest Oklahoma and bring low clouds and gusty north winds along with drier and cooler air.