Aikyam-Lab/Synoptic-Bench huggingface dataset:
624 AM CDT Sun Apr 23 2017 Ridge of high pressure currently across the Mid Missouri Valley shifts east today resulting in breezy southwest winds. This should easily boost temps into the lower to mid 70s. Surface dewpoints in the lower/mid 30s, and may even mix a little lower this afternoon results in humidity values around 20-25% today, with lowest values in northeast NE. Spotty showers could occur in northeast NE Monday, but elsewhere remains dry, with another wind day with high temps in the lower to mid 70s ahead of an advancing cold front.
High pressure will move across the region today and give the Ozarks a respite from the wet and dreary pattern. The high pressure will not linger as it moves through the area tonight as a cold front moves towards the area. As the cold front moves through the area, lingering showers will continue into the evening.
Cold front was steadily approaching the forecast area from the north (it has already pushed through Lewistown as of 3pm). The mountain foothills could see the low 30s, but for the most part most locations will struggle to hit 30.
605 PM EDT Fri Mar 30 2018 A cold front has moved east of the region with a dry secondary front moving through this evening.
258 PM CDT Fri Mar 30 2018 A broad upper level trough is over most of the country with northwest flow aloft over West Texas and southeast New Mexico. Winds will come out of the west on Saturday with downslope warming contributing to temperatures climbing into the 80s and 90s across the whole area except portions of the higher terrain.
601 PM EDT Fri Mar 30 2018 Dry weather is expected through most of Saturday under building high pressure. Precipitation chances return with a Saturday night cold front. Dry weather is expected through most of Saturday as high pressure slides east across the region. Increasing wind is expected by Saturday afternoon as the pressure gradient tightens as the high moves to the E Coast, and a cold front approaches from the W. The cold front is progged to cross Saturday night.
224 PM EDT Fri Mar 30 2018 A cold front has moved east of the region this afternoon with a dry secondary front moving through this evening.
Some light showers are lingering in the far eastern zones ahead of a cold front bisecting the forecast area. The lingering cloud cover is keeping temperatures a few degrees cooler than expected at this point in the day, however post frontal clearing should help temps rebound to the expected high in the low 70s.
1247 PM MDT Fri Mar 30 2018 The more direct Northwest flow aloft will be backing slightly to the West as the Left Coast ridge flattens and the downstream trough swings eastward. This in turn means more stable conditions and the possibility of mixing warmer air downward. Snow should accumulate a bit better after sunset but without cold air mixing into the equation expect but only the high peaks of the Park Range should see anything significant.
250 PM EDT Fri Mar 30 2018 A cold front will move southeast across the area late this afternoon and evening. High pressure will build in from the Midwest tonight through Saturday.
159 PM EDT Fri Mar 30 2018 A cold front will move southeast across the area late this afternoon and evening. High pressure will build in from the Midwest tonight through Saturday.
A ridge of high pressure with above normal temperatures over the region today will push east this weekend, allowing for a cooling trend to take place. Dirty ridge of high pressure over the eastern Pacific with low clouds/fog surging well north to the Monterey County line this afternoon.
305 PM CDT Fri Mar 30 2018 High pressure today brings beautiful weather with minimal clouds, temperatures in the 70s, and northerly winds occasionally gusting up to 20 mph. High pressure will shift to the east coast on Saturday, and return flow sets up across our region through the weekend.
While a few showers or isolated storms will be possible Saturday, the arrival of a strong cold front late in the day will likely result in increasing coverage of showers and thunderstorms through Saturday evening, with the brunt of the activity being forced to the north of the front and limiting any severe weather potential. As for the above mentioned front, it will begin to usher in much colder air in time for Easter, which bluntly speaking, will not be a pleasant day at all! Surface analysis from the morning shows large high over central Canada associated with surface temperatures from -10 to -20 below zero, and high amplitude upper pattern in the high latitudes will force some of this cold air south into the plains.
222 PM EDT Fri Mar 30 2018 Light rain continues to exit the area as a cold front pushes through north and central Georgia. Dry high pressure already building into the area will hold into the weekend.
317 PM CDT Fri Mar 30 2018 High pressure will settle over the Mid-South this evening. The high will quickly shift east allowing a cold front to sink into the Mid-South by late Saturday afternoon into Saturday evening.
The high will drift across the area overnight, and be east of the area by 12Z Saturday. The synoptic pattern is conducive to at least a small ridge valley temperature difference tonight, and this is supported by the COOP MOS guidance as well, which has some lows around freezing. With warmer temperatures and a drier airmass in place for Saturday relative humidity will drop into the 20 to 30 percent range in the southeast part of the area. Rain chances will return Saturday night as a cold front moves into the area.
Aloft - A long wave trough down the the nation/s mid-section. An embedded short wave trough above the Ohio Valley scoots to the Mid-Atlantic coast early Sat. Surface - Sprawling high pressure in the central plains tracks to the Mid-Atlantic coast. This slowly pushes a cold front initially strung along the eastern seaboard and across north Fl to the Gulf of Mexico into central FL. Atlantic high pressure stretching through the Bahamas to Cuba this afternoon exits east. The cold front is moving into the east Gulf and the far northern Nature Coast this afternoon and will continue into central FL overnight then south FL by Sat afternoon. This drying plus limited lift as the short wave trough to the north pulls away is what will play an inhibiting factor in the convection. The highs Sat run below normal north and central.
Ridge of high pressure remains anchored across the forecast area. Current temperatures are running a few degrees cooler compared to 24 hours ago, especially over the northern Sacramento Valley. Still expecting afternoon highs in the upper 70s to the low 80s in the Valley. Models show the ridge flattening this weekend as subtle troughing moves through. With slightly lower 850mb temperatures and some onshore flow max temperatures will also trend slightly cooler, but are expected to remain several degrees above normal.
/28/ A benign weather day is expected today as high pressure at the surface will slide into the region.
Most locations will end up within a few degrees of freezing at sunrise. Windy and warmer. High pressure near 1029 mb over central Kansas at sunrise will move east quickly, near Springfield Missouri by midday. The initial cold front and wind shift is expected to arrive after midnight, with winds trending NWly toward sunrise Saturday.
A weak cold front moved through earlier this morning, with predominant northeast flow at the sfc as a result. The high cloudiness should begin to thin towards the end of the period as the mid-level flow turns more out of the west and northwest. /issued 352 AM CDT Fri Mar 30 2018/ SHORT TERM (Now through Saturday): The most recent surface analysis indicated a cold front roughly from Houston to Encinal across the southern half of Texas. This front is expected to pass through Deep South Texas and the Rio Grande Valley early today, with a nearly zonal flow overhead in the middle layers of the atmosphere initially transitioning to a ridge of high pressure building in from the west during the forecast period.
Basically, areas along the Canadian border are not expected to get much snow at all now, even lower amounts down into the highway 2 corridor (Devils Lake to Grand Forks to Bemidji). Therefore adjusted the winter storm warning along the highway 2 corridor to a winter weather advisory. There should be a swath of 6+ inches of snow and the higher 8-12" may occur over a narrower zone. expect high pressure to build in with cooler temperatures.
246 PM MDT Fri Mar 30 2018 Radar and satellite imagery both show a wave in the northwest flow that is riding across a distinct cold front stretching across Northeast Montana. The cold front will continue moving south as colder Arctic air slips in behind the it. This overall pattern will not change much as the low pressure will still be locked over the Hudson Bay region.
Surface winds will veer ahead of a cold front by Saturday afternoon, with north and northeast winds behind the front in northern Oklahoma. The other story with the cold front will be rather cold temperatures for the first day of April.
300 PM EDT Fri Mar 30 2018 High pressure will move across the region tonight and Saturday morning providing us with a chilly night and dry weather. Strengthening low pressure moving from Michigan to Quebec will swing a cold front through here Saturday night.
A cold front will move into NW OK tomorrow morning causing winds to shift to the NW.
212 PM MDT Fri Mar 30 2018 Water vapor shows long wave trof covering much of the CONUS. At the surface, associated low is deepening over central MT with warm front extending southeastward through western SD. Impressive 7-9mb/3hr pressure rises noted behind cold front across far southern ALTA. Cold front will quickly sweep through the CWFA tonight, entering our far northwest zones about 02z and exiting our south central SD zones shortly after midnight. Expect some rain showers late this afternoon and evening along/ahead of the cold front, with 100-200J/KG SBCAPE supporting a lightning strike or two. Blustery northwest winds with highs below freezing expected for most areas.
The base of an upper trough is just north of the area and will continue to progress east today. At the surface, a cold front has already passed through and is down in central GA. High pressure at the surface and drying aloft has created a subsidence inversion, around 900mb per BMX and LAPS soundings. Bumped the highs up a deg or two due to some clearing already occurring so highs in the upper 50s to lower 60s seems reasonable. High pressure will continue to exit the area to the E going into the first half of the weekend period, as a longwave upper trough axis moves ewd across the Atlantic Coast and into the Atlantic waters.
645 PM EDT Fri Mar 30 2018 A cold front will move southeast and exit our area this evening. High pressure will build in from the Midwest tonight through Saturday.
High cloudiness has been streaming across area skies today courtesy of an upper low near 30N/140W advecting high level moisture into more zonal W to E flow over N California. The upper high pressure ridge off the central and S California coast will shift E and weaken as the trough of low pressure well offshore gradually shifts E toward S California and fills.
226 PM EDT Fri Mar 30 2018 Partly cloudy and dry conditions are expected tonight with lows into the low to mid 30s. Showers and gusty winds to 45 mph will accompany a strong cold front tomorrow.
A ridge of high pressure with above normal temperatures over the region today will push east this weekend, allowing for a cooling trend to take place. Readings are running 2-6 degrees warmer for inland areas at 830am. Only other item today will be an increase in cirrus cloud cover from a weak eastern Pacific storm system which is beginning to break down the high pressure ridge responsible for our dry weather lately. Lowering H5 heights (as the ridge of high pressure departs to the east) and increasing onshore flow should help to deepen the marine layer, reducing the threat of dense fog later Friday night into Saturday morning.
once the high end MVFR cigs scatter out at KFSM by 18Z. A few showers may develop early Saturday, but the better rain chances will hold off until very late in the day, or more likely Saturday evening, when a cold front moves south across the area.
A cold front will move through the DHT and GUY TAF sites switching the winds around to the north by mid morning on Saturday. This is generally a dry weather pattern for our forecast area with periodic cold frontal passages expected through next Friday.
A cold front along the Appalachian chain reached through the FL Panhandle to the Gulf of Mexico early this morning with showers and a few storms ahead of it. The axis of Atlantic high pressure extended west-southwestward. as a short wave trough tracks up the Ohio Valley. A cold front approaches the waters today.
255 PM EDT Fri Mar 30 2018 A cold front will move southeast across the area late this afternoon and evening. High pressure will build in from the Midwest tonight through Saturday.
Dry Westerly Flow with Shallow Cold Front Backing into the Plains Dry westerly flow across Colorado for the next 24 hours. Saturday afternoon, a shallow cold front will back into the far eastern plains.
219 PM CDT Fri Mar 30 2018 209 PM CDT Windy conditions on Saturday remain the focus as a strong cold front crosses the region. An increasing pressure gradient between high pressure over the eastern CONUS and the strengthening low will result in gusty SW winds across the area in the morning.
304 PM CDT Fri Mar 30 2018 Breezy southwesterly winds have returned to the area today as a ridge of high pressure at the surface moved eastward across the Middle Mississippi Valley area. A decent pressure gradient will remain in place across the region tonight as low pressure approaches from the High Plains leading to breezy southerly winds and more mild overnight low temperatures ranging from the mid to upper 40s for most locations, although some locations may remain more mild. A cold front will usher in much cooler air on Sat, although much of southern Kansas will remain above normal with a fropa anticipated after 18Z for much of south central and southeast KS where highs could climb to around 70 near the OK state line.
121 PM EDT Fri Mar 30 2018 High pressure tonight into Saturday. Still some lingering showers across Ohio associated with an upper disturbance, along with areas of drizzle lingering behind the cold front, generally east of the Ohio River. With that being said, precipitation will gradually taper off area wide this evening, with high pressure building in.
410 PM EDT Fri Mar 30 2018 A cold front has moved east of the region with a dry secondary front moving through this evening.
231 PM MDT Fri Mar 30 2018 Skies are mostly clear this afternoon with the short term focus being on the approaching cold frontal boundary that pushes southwestward into the region on Saturday. This will set the region up with near surface upslope flow that pushes the area of higher dewpoint air into the higher terrain to the west ahead of a short wave trough aloft expected to move east of the Rockies and across the central high plains Saturday night.
Will introduce mvfr at DRT first at 07Z and wait till close to daybreak to bring the low cigs in at SAT/SSF/AUS. Upper air analysis last evening showed a trough over the middle of the country and then extending across Northern Mexico. At the surface, a cold front was stretched across South Texas from Houston to San Antonio to Eagle Pass. The upper level trough will lift to the northeast during this period and the flow will become northwesterly.
237 PM EDT Fri Mar 30 2018 High pressure will build into the are Saturday bringing drier air and sunshine.
At the sfc, a ridge of high pressure will build across the area tonight and move east of the area on Saturday. A drier airmass along with clear skies and light winds will allow lows tonight to drop into the low to mid 40s inland and low 50s along the coast. Highs on Saturday will climb into the low to mid 70s inland to low 70s along the coast.
Temperatures will be warmer tonight due to an increase in low level moisture and expected cloud cover, with early morning lows mainly in the low to mid 50s. Low clouds will erode by late Saturday morning, with mostly sunny, breezy and warm conditions expected for the rest of the day with afternoon highs in the low to mid 80s.
138 PM EDT Fri Mar 30 2018 A cold front moving through the area will pass to the east by this evening, with high pressure building in behind it through Saturday.
Cold front will slowly push across NE FL with widespread showers and possibly an isolated thunderstorm. High pressure will build north of the region into the Carolinas and NE wind surge will peak during the morning hours along the coastal areas/St Johns River Basin at 15-25 mph with peak gusts in the 30-35 mph range at the coast, and should remain below wind advisory criteria. Max temps will range from the cooler coast in the NE Flow only topping out in the 60s, while further inland should reach into the lower to middle 70s.
At mid morning, a cold front had passed through all of Mid TN. Cooler air was moving in on northwest winds. More substantial clearing will take place this evening from 6 PM to 9 PM as dry high pressure pushes away the clouds. Around 31/00Z, skies will clear across the area and winds will become light under high pressure.
/issued 1054 AM CDT Fri Mar 30 2018/ High pressure continues to build into the Mid-South this morning. We will see the passage of a couple of cold fronts but conditions do not look favorable for severe thunderstorms. Clouds will linger today as a broad trough shifts across the Midsouth. Clouds will return to the region late Saturday as a weak cold front moves into the area.
Skies will be clearing through the night as the upper trough departs to the east, and high pressure will settle across the area.
242 PM EDT Fri Mar 30 2018 A cold front will move across the area this evening with high pressure building into the region Saturday.
This will help keep the air mixed and the low temperatures in the mid to upper 40s for some areas to the south. The northwest Panhandles may not see as much wind, but should stay mixed enough that the lows will be near 40. Temperatures will still be in the 70s across the Panhandles, but a cold front will be in Saturday night.
In the middle and upper levels(700-200 mb), latest GOES 16-R imagery overlaid with model streamline analysis as of 200 pm, continues to depict a large middle and upper level trough now encompassing the western two-thirds of the CONUS, with the main downstream ridge axis migrating off the Eastern Seaboard in the last 24 hours. At the surface and in the lower to middle levels(Surface to 700 mb), latest satellite imagery overlaid with both marine and land surface observations and analysis as of 900 am, details a slowly moving cool frontal boundary positioned from the South Carolina Low Country southwest to the South Central Gulf of Mexico.
351 PM CDT Fri Mar 30 2018 A cold front sinks into NE Kansas late tonight and tomorrow, setting the stage for a cold end to the Easter weekend. Broad cyclonic flow dominates the CONUS through the period owing to a strong upper low centered over Hudson Bay. For tonight, increasing WAA on a 60-80 kt LLJ and a tightening pressure gradient ahead of the lower tropospheric trough will keep lows from falling much below 50 degrees.
306 PM CDT Fri Mar 30 2018 A nice day has unfolded across the region as high pressure moves in at the surface. This has resulted in sunny skies and temperatures ranging from the lower 60s across the Highway 82 corridor to the lower 70s across the Highway 98 corridor. Another very nice day is expected tomorrow with plenty of sunshine and highs in the lower 70s across northern counties to mid 70s in my southern counties and parishes. /28/ A near zonal flow pattern will exist at the beginning of the period with a frontal boundary at the surface working it way south through the lower MS valley. Though the forecast area will be in the warm sector ahead of the boundary, light winds will have had a hard time dislodging the cooler/drier airmass as dewpoints remain in the 40s/50s.
353 AM EST Sat Mar 10 2018 Low pressure remains nearly stationary over the Canadian Maritimes this weekend with weak high pressure over the tri-state area.
High pressure aloft will keep dry and quiet conditions over the forecast area for tonight. A weak wave in the flow will ride up over the ridge on Sunday flattening out the ridge. Precipitation amounts will be very light and snow levels will continue to rise and keep snow only on the higher peaks.
Have updated first period forecast grids to more closely reflect latest trends, including keeping temps a tad warmer overnight due to continued light wind and increasing clouds.
/issued 341 PM CST Fri Mar 9 2018/ Incoming upper low from the northern Rockies progd to allow front to stall over the region tonight and early tomorrow before reinforcing shot of cooler and drier air surges over region late Saturday into Sunday. Area near and southeast of stalled frontal boundary, and east of developing surface cyclone that will be situated over western north Texas, will be primarily location for at least widely scattered showers and perhaps a few thunderstorms. trough.
Cooler and drier air will overspread the area tonight as main upper disturbance drives a cold front south through the area. Cooler temperatures will continue through the early part of the upcoming week as cool Canadian air continues to filter south into the southern Plains.
As the high pushes off the Florida Atlantic coast, southwest winds will lead to gradually increasing moisture tonight into Saturday. By midday, a surface boundary will become nearly stationary across north Georgia, and showers will begin to increase in the afternoon in association with upper disturbances ahead of a digging upper trough. The highest rainfall rates during the period will be during the late Saturday night/early Sunday morning time frame as precipitable water values gradually increase into the 1-1. RW Sunday continues to look wet for much of the day as an area of low pressure gets better organized across MS/AL area.
More widespread showers and thunderstorms will accompany the cold front when it moves through tomorrow night, but the timing of the front means that chances for severe storms will be much less.
304 AM EST Sat Mar 10 2018 High pressure will prevail today.
SW low- level flow around the high and ahead of the front to provide warming temps Saturday. Upper energy will shift east across the SE ahead of a northern stream upper trough diving SE into the central CONUS. GFS and NAM models have some differences with the evolution of the system, with questions regrading the track of the low or possibility of the low occluding and secondary low developing near the coast. Highs Saturday ranging from the mid 60s north to the lower 70s south, and upper 50s north to near 70 south on Sunday. Lows Saturday night will be in the upper 40s to the lower 50s.
1258 AM EST Sat Mar 10 2018 Low pressure remains nearly stationary over the Canadian Maritimes through Saturday. Lows will range from the lower 30s to the middle 20s. Upper low remains stationary over the Canadian Maritimes through Saturday before moving east at night. Temperatures rise to the lower to middle 40s during the day, and fall into the 20s or lower 30s at night under partly cloudy to mostly clear skies. The low is progged by the ECMWF to be down to 983mb about 215 miles e of the benchmark 12z Tue. Low pressure remains nearly stationary over the Canadian Maritimes through Saturday night. Meanwhile high pressure will build to the west and south.
247 AM EST Sat Mar 10 2018 High pressure will build into the area from the northwest today through Sunday.
Clouds will gradually diminish tonight as high pressure at the surface and aloft builds into Western Washington.