Aikyam-Lab/Synoptic-Bench huggingface dataset:
Northwest winds will usher in a reinforcing shot of cooler air, beginning mainly in the afternoon.
320 AM EDT MON JUN 27 2016 A juicy cold front moves through the area today kicking off heavy rain showers. A reinforcing cold front moves through Tuesday. Cooler and drier remainder of week. Big concern for the day is the amount of water that will be squeezed out of an approaching cold front especially over the areas that were hard hit last week. Today a cold front will slowly make its way through our forecast area. Trailing cold front will move through the region.
322 AM CDT MON JUN 27 2016 Sub tropical ridge stretches from the Pacific to the Atlantic this morning and is centered over the 4 corners region. Upper low over the region that brought heavy rain to some parts of the area yesterday will continue to slowly drift west today. An east coast trough is expected to increase over the Eastern US but the ridge will remain entrenched over the west. Temperatures should be warmer today and slowly increase each day rising to the upper 90s by late in the week. Believe the upper low centered over Permian Basin as of 08z. Have the chance for additional rain today mainly over/near the higher elevations.
400 AM EDT MON JUN 27 2016 A cold front will move into the area today before slowing over eastern areas later today and into Tuesday. High pressure will bring a period of drier weather for mid week. While the cold front is not accompanied by much of a temperature change, it is being accompanied by a narrow ribbon of anomalous PWAT over 2 inches, or some 1-3 std dev above normal. Models show the cold front slowing to a crawl as it moves over central Pa tonight and Tuesday. This will be near normal over the SE, but several degrees cooler than normal over the NW.
324 AM CDT MON JUN 27 2016 High pressure brought mostly clear skies, aside from some mid- level clouds across the south, and light winds. Bit more of a range in temps compared to the last few days - from the lower 80s north of highway 20 to the lower 90s along/south of highway 34 west of Galesburg, IL. Humidity will be very comfortable with dewpoints in the lower 60s. Mostly clear and cooler in the upper 50s on avg. 850mb trough and associated cold air advection drop in from the north during this period, causing 850mb temps to fall to around 10 C by early Tuesday morning. Uttech Expect dry and cooler conditions on Tuesday as high pressure builds into the region. Afternoon highs will range from the low 70s near Freeport to around 80 degrees near Keokuk.
A weak cold front is still expected to slowly move across OK during the day Tue and this feature may support additional precip near western north TX and the Red River region.
1105 PM MDT SUN JUN 26 2016 Elongated ridge will dominate these periods, centered near the Four Corners. Meanwhile an inverted trough over southern Arizona will slowly work westward under the ridge into southern California.
Thunderstorm chances will exist nearly each day through the latter part of the week as upper level ridging builds across the Intermountain West, setting up a northwesterly flow aloft across the Western High Plains. As a prevailing southeasterly upslope flow continues to draw low level moisture into Kansas, a series of H5 vort maxima will cycle off the ridge axis into the high plains during the period setting the stage for diurnally driven thunderstorm development lee of the front range late each day. Storms are likely to drift off the higher terrain into western Kansas Monday evening.
653 AM EDT MON JUN 27 2016 A juicy cold front moves through the area today kicking off heavy rain showers. A reinforcing cold front moves through Tuesday. Cooler and drier remainder of week. Big concern for the day is the amount of water that will be squeezed out of an approaching cold front especially over the areas that were hard hit last week. Today a cold front will slowly make its way through our forecast area. Trailing cold front will move through the region.
The highest pw values should remain along and south of I-40 today, while shallow sfc moisture has made it as far north as Page this morning. On Tuesday, high pressure aloft will become centered near the Four Corners.
An expansive area of high pressure aloft will prevail over the southwest states during the next several days, with the upper high to generally be centered near the Four Corners region. The flow around this high pressure in combination with adequate moisture will translate into isolated to scattered showers and thunderstorms through Tuesday.
633 AM EDT MON JUN 27 2016 A cold front will move slowly across the area today and Tuesday. High pressure will bring a period of drier weather for mid week. While the cold front is not accompanied by much of a temperature change, it is being accompanied by a narrow ribbon of anomalous PWAT over 2 inches, or some 1-3 std dev above normal. Models show the cold front slowing to a crawl as it moves over central Pa tonight and Tuesday. This will be near normal over the SE, but several degrees cooler than normal over the NW.
345 AM EDT MON JUN 27 2016 High pressure will weaken over the area today as a cold front approaches from the west early tonight through Tuesday. Surface and low amplitude mid level ridging weakens today, setting up a southerly return flow regime featuring warm air and moisture advection ahead of a cold front sagging southeast out of the Ohio Valley this evening.
Models are showing the low clouds getting to near or just north and west of Roseburg late tonight/Monday morning before peeling back toward the coast by Monday afternoon. The ridge axis will shift eastward into Idaho Monday. Both NAM12 and GFS20 bring a weak short wave trough through SW Oregon Monday. the short wave trough will also being highs on Monday down a few degrees. A weak thermal trough setting up along the coast Monday night will lead to northeast offshore wind over SW Oregon and western Siskiyou County. The ridge of high pressure builds back on Tuesday.
By later today/tonight, dry conditions will return as high pressure build s in from the north.
Clouds will increase after midnight ahead of a cold front moving southeast from the Great Lakes with showers likely reaching northwest PA by 12z Monday.
145 AM EDT MON JUN 27 2016 A cold front near chicago will move across the area tonight followed by another cold front monday night.
Mid level ridge shifts further south and west bringing to the area stronger but still weaker northwest flow aloft. It looks like the old front stays to the south and west of the area due to a stronger lee trough. The upper level pattern has not changed over the weekend, with the same pattern of a trough over the eastern states and a ridge in the western states.
The closed upper low centered near Kenora Ontario will open up and translate eastward tonight and tomorrow. The risk for thunder should rapidly end this evening, but the area of widespread clouds and showers should slowly sag southward across much of the central and eastern sections of the Duluth CWA through the night with the main trof axis, and persist for much of Monday across the MN Arrowhead and NW Wisconsin. High pressure settles over the forecast area Monday night and lingers through Tuesday night.
410 AM CDT MON JUN 27 2016 (Today and Tonight) A weak upper low over our southwestern counties early this morning will sag to the south and will be over the eastern boundary of the Big Bend region by mid-afternoon. An upper ridge will build southeastward over the forecast from its parent upper high centered over the Four Corners area through the remainder of the day. Afternoon highs today will be in the low to mid 90s as clouds decrease. Morning lows tomorrow will be mostly in the lower 70s.
It looks like we will have one more day of warmer temperatures today before the high pressure starts to give way to a frontal boundary that will push southward over the southern United States by Tuesday.
640 AM EDT MON JUN 27 2016 Scattered showers and thunderstorms will be possible into early afternoon as a weak cold front pushes south through the region.
543 AM EDT MON JUN 27 2016 A cold front will move into the area today before slowing over eastern areas later today and into Tuesday. High pressure will bring a period of drier weather for mid week. While the cold front is not accompanied by much of a temperature change, it is being accompanied by a narrow ribbon of anomalous PWAT over 2 inches, or some 1-3 std dev above normal. Models show the cold front slowing to a crawl as it moves over central Pa tonight and Tuesday. This will be near normal over the SE, but several degrees cooler than normal over the NW.
414 AM CDT MON JUN 27 2016 As upper lvl ridge continues to slowly retrograde across TX deeper moisture across area will result in increased areal convection.
645 AM EDT MON JUN 27 2016 High pressure will weaken over the area today as a cold front approaches from the west early tonight through Tuesday. Surface and low amplitude mid level ridging weakens today, setting up a southerly return flow regime featuring warm air and moisture advection ahead of a cold front sagging southeast out of the Ohio Valley this evening.
A weak dry cold front moves south/southwest across much if not all of the forecast area by around 12Z Monday. The upper ridge over the Four Corners region amplifies Monday across the Rockies with 30 meter height rises over the forecast area.
A cold front will move through the area tonight, resulting in much cooler temperatures Tuesday with highs around 70 to 75. A strong cold front for late June will move across the region tonight. Much cooler and drier air move across the area tonight with lows dropping to around 60 degrees. Much cooler air will be spreading over the area Tuesday. Highs Tuesday will be 15 to 20 degrees cooler than today. A series of short wave trofs will move southeast out of Canada this week and amplify the long wave trof over the eastern CONUS.
Very weak and variable low level winds will exist across the area today between weakening front to the north and high pressure ridge east of the area. Overnight lows will range from the low to mid 70s. Highs will be around 90 along the coast and in the lower 90s across the interior.
415 AM CDT MON JUN 27 2016 Upper air analysis from 00z soundings and current water vapor imagery shows a weak upper low over west Texas and upper level ridge over the Arklatex. Both features should weaken today as upper level ridge over the 4 corners and southern Rockies becomes more established. By Tuesday an upper level trough should deepen over the Great Lakes with the ridge stretching from the Great Basin to southern Rockies.
SHORT TERM (Today through Tuesday): Summertime doldrums continue today with the dissipating upper low to the northwest and Gulf moisture trapped near the sfc areawide.
A weak pressure pattern remains in control of the Keys area sue the dominant area of deep layer high pressure to our north.
Meanwhile, upper ridging stretches from the southwest CONUS into the southern Rockies. At the surface, a cold front extends from the western Great Lakes, through MN and across southern SD Best guess on what is keeping storms around early this morning would be some kind of remnant MCV from last nights convection combined with some weak mid level moisture transport. Higher chances for storms today will be over western Nebraska/northeast CO/NW KS where the western edge of a cold front will combine with good upslope processes. Therefore, will carry the highest pops tonight generally west of I-135.
Synoptic setup: A large trough runs northern from the eastern half of the CONUS into a cooler arctic airmass over the the Hudson Bay. Hot high pressure sets over the the Desert Southwest and Intermountain West with a ridge jutting north into the western half of Canada. a large closed low resides over the Gulf of Alaska. Today through Tuesday night: flow pattern will remain the same with the ridge to the west gaining influence and raising temperatures slowly.
Upper level ridge now well developed over the forecast area. Possibly a degree or two cooler on Tuesday, and even less chance of a mountain shower as the flow is a little bit more westerly and drier aloft.
407 AM EDT MON JUN 27 2016 A cold front will be nearing northwest Ohio this evening and will cross the area tonight.
Weather Pattern Shifting To Slightly Cooler By Mid Week Followed By A Possible Active Weather Pattern By End Of Week. A second front which is has a bit stronger push of slightly drier and cooler air behind it moves across the area on Tuesday.
349 AM EDT MON JUN 27 2016 Scattered showers and thunderstorms will be possible into early afternoon as a weak cold front pushes south through the region.
Could see some patchy fog and low clouds over portions of the Northeast plains this morning as surface dewpoints have risen into the lower 60s and with lingering moisture from overnight storms. Given the higher PW values.
a cold front will then move into the region by early afternoon.
347 AM EDT MON JUN 27 2016 Break down of the upper ridge continues with northwest upper flow already beginning to evolve over the region. Should see more widespread convection developing today over the forecast area as the low-level flow transitions to southwesterly replacing the more stable easterly flow. H5 trough over the eastern U.
351 AM CDT MON JUN 27 2016 Closed low over the Gulf of Alaska with sharpening ridge over the western CONUS as desert southwest high builds. Upper trough extending into the Great Lakes from low over northeast Canada. Highs today in the low to mid 80s Precipitation chances continue through the night mainly south. Periods of thunderstorms are possible with northwest flow aloft and several wave or trough passages. Blended slightly toward MAV/MEX guidance as it's the warmer solution. Despite continual precipitation chances and cloud cover, any sunshine combined with H85 temps of 18-20C will allow for sfc temps to reach the lower/mid 80s. Given the possible cluster/linear convective mode and the influence of the low level jet, which the NAM and GFS show H85 speeds up to 40kts, damaging winds will be just as large a threat.
With high pressure in place and continuing to build over the next several days, temperatures will warm across north central Idaho and western Montana.
ahead of a surface front and prefrontal trough situatedto the northwest of the region.
623 AM EDT MON JUN 27 2016 A cold front will be nearing northwest Ohio this evening and will cross the area tonight.
High pressure aloft will continue to strengthen across the interior west, leading to another round of hot temperatures for the first part of the week.
630 AM EDT MON JUN 27 2016 A cold front will approach from the west this morning and progress across Central NC this afternoon.
A cold front will move through the area tonight, resulting in much cooler temperatures Tuesday with highs 70 to 75. A strong cold front for late June will move across the region tonight. Much cooler and drier air move across the area tonight with lows dropping to around 60 degrees. Much cooler air will be spreading over the area Tuesday. Highs Tuesday will be 15 to 20 degrees cooler than today. A series of short wave trofs will move southeast out of Canada this week and amplify the long wave trof over the eastern CONUS.
431 AM CDT MON JUN 27 2016 A much cooler Canadian air mass found on the back side of an upper lever low currently seen in WV imagery approaching James bay Ontario will push into the northland today. Overnight lows will generally be the 40s, with warmer values near lake superior.
350 AM EDT MON JUN 27 2016 A cold front will approach from the west this morning and progress across Central NC this afternoon.
Clear skies cover interior NorCal early this morning with strong high pressure overhead. Strong high pressure remains over the region through mid-week before weakening slightly.
440 AM EDT MON JUN 27 2016 High pressure over the area will gradually move offshore today.
Near the surface, a broad area of high pressure is sinking southward across the high plains of western Kansas. Expecting the highest total snowfall accumulation across Morton county where 3-5" inches will be possible when all is said and done.
1047 PM MST Thu Jan 5 2017 Tonight-Friday: Temperatures are trending a bit cooler this evening with persistent CAA into the region. High temperatures Friday could be complicated by lingering snow pack despite arctic high pressure moving east of our CWA and sunny skies prevailing. Regarding Wind Chill Advisory tonight-Friday morning: Arctic high pressure will continue to slide south over our region. high cloudiness moves in from the west Saturday ahead of an approaching upper level ridge of high pressure.
Temperatures will finally rise to be all above zero on Friday as the low level west to southwest winds bring in slightly warmer air. Another surface cold front will push in from the north Friday afternoon. We'll still be under a ridge of high pressure which will be extending from AK down through southern Saskatchewan and western ND.
Although cloud cover will begin to slowly scatter out north to south during the day, the air mass combined with the fresh snow field will keep highs well below freezing today.
Additional snow accumulations will range anywhere from 2-6 inches over the higher terrain in Summit and Park counties by mid evening. Coldest temperatures will be found along the South Platte River just below Denver and in the high mountain valleys where readings could fall below 20 below zero overnight. much drier conditions and warmer temperatures are in store as an upper ridge builds in from the west. Daytime highs 15-25 degrees warmer under clear to partly cloudy skies.
1035 PM CST Thu Jan 5 2017 The cold front has passed through all terminals leaving strong northerly winds in its wake with gusts up to 25-30 kts. /ISSUED 734 PM CST Thu Jan 5 2017/ Updates made this evening to re-establish falling temperature trend through the evening with the secondary surge behind the cold front. /ISSUED 544 PM CST Thu Jan 5 2017/ The cold front has made its way through the AUS and San Antonio terminals. At the surface, a cold front was stretched from Victoria to Fort Stockton. There will be a chance for rain over parts of the south and east, but any precipitation should be in areas where the temperatures will remain above freezing and should be rain. Temperatures will be much colder with lows below freezing along and northwest of I-35.
915 PM PST Thu Jan 5 2017 Light rain will end tonight and the gusty mountain winds will diminish as a trough moves east into Arizona. Friday will be a dry day, but there may be a few light showers Saturday as another weak trough passes by to the north.
Interestingly, temps were in the LowER 40S in te San Luis valley floor. With the jet overhead and a slight upslope component to the lower level flow, there is a good chance that we could see some locally heavy snow across the Spanish Peaks Region/Raton Mesa area starting late this afternoon into tonight. Look for max temps at or slightly below freezing for the plains, and in the 20s for the high valleys.
Ogallala has had the lowest wind chill so far overnight at 37 below. Upper level ridging will bring moderating 850 mb temperatures from -8C to -12C and highs from the upper teens to lower 20s.
Temperatures are expected to fall below freezing after 21z at KMCB and after 00z at KHDC and KBTR. This will result in freezing rain and sleet conditions that could cause icing problems for aircraft at these airports. The remainder of the terminals are expected to remain above freezing through 06z tomorrow.
253 AM CST Fri Jan 6 2017 Cold Arctic high pressure ridge, currently in the plains, will slowly drift into the CWA today and into tonight.
Temperature confidence on the SD plains low Friday given battle between entrenched arctic air and snow cover versus warmer air sliding over inversion. Arctic high pressure will begin to shift east of the region this weekend. Warmer air aloft will begin to move into the region Saturday as upper ridging across the western CONUS slides eastward.
The usual downsloping areas will see some holes open up this morning, and may get rid of all the lower clouds in the afternoon. An upper trough over the Great Lakes/Ohio Valley lingers, keeping mention of lake effect snow showers in the far NW mtns.
High pressure will continue to build into the area at the surface and with the snowpack in place, we are expecting temperatures to dip into the single digits to around 12 degrees across far southern Missouri. The colder than normal temperatures will persist through Saturday with dry conditions as a dry air mass associated with the large area of high pressure will remain in place.
A second region of heavier snow, associated with the main trough axis, should develop by late morning and into early afternoon, affecting parts of far southeast Oklahoma.
Two waves on NW flow aloft, one currently moving through Northeast Montana and another one this afternoon and evening will combine with some overrunning moisture with a weak cold front to bring light snow to parts of the forecast area. The ridge remains over the area Saturday Night.
The deep Arctic intrusion and mostly cloudy skies have kept temperatures below freezing this afternoon over most of the CWA. Temperatures will not warm above freezing until mid-day Saturday. Main impacts will be to roads given subfreezing temperatures.
01 UTC surface analysis showed a cold front approaching the forecast area. 1031MB high pressure supporting modified polar airmass across the central Plains will be reinforced by a stronger high pressure from Canada supporting a colder Arctic airmass by the end of the short term. Warm and moist southwesterly flow at the low and mid levels will promote and increase in rain chances beginning Friday morning across southeast Alabama and spreading eastward through the day Friday and decreasing from west to east Saturday. Forecast temperatures during this time frame will hover just above freezing so no significant impacts are expected at this time.
Cold front is pushing through the region with winds increasing out of north-northeast. A second surge of high pressure will push into the region with a second rise in wind and wind gusts after 00Z. /Issued 919 PM CST Thu Jan 5 2017/ The cold front is currently pushing through South Texas along a Cotulla to George West to Port O Connor line with light rain developing and temperatures quickly falling behind the front.
Still cold though, with highs in most areas in the lower 20s. On the backside of the high on Saturday will see temperatures rise into the upper teens north and low 20s south.
Low's tonight will reach the low 50s for interior and west and in the 60s along the east coast which is between 4 to 7 degrees above average for this time of year. Same weather pattern continues into Friday but with a few degrees warmer across the area with high's reaching the mid to upper 70s along the coast and near 80s interior. Another cold front, more potent, will approach South Florida Friday night into Saturday.
A weak front will arrive late Saturday or Saturday evening, with a chance of light rain or flurries in the lowlands.
This area will contain the highest probability for accumulating winter precipitation. Areas along and just south of I-20 will likely see a mixture of sleet and snow, and possibly some freezing rain. As the low level colder air deepens Friday afternoon, the mixture of wintry precipitation will shift southward and possibly reach the I-85 by sunset Friday. A winter storm warning will be issued for east-central Alabama, where an overlap will occur between the sub-freezing air mass and heavier precipitation amounts. High pressure will build in from the north and northwest and the pressure gradient will increase. The highest liquid totals will be across the southeast counties, but snowfall totals could approach 2 inches just south of the I-20 corridor.