Aikyam-Lab/Synoptic-Bench huggingface dataset:
These winds will relax some on Saturday ahead of a cold front that will move into northwest Oklahoma by late morning and to near the I-44 corridor by the end of the forecast. 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.
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.
936 PM EDT Fri Mar 30 2018 High pressure builds across the area Saturday.
The weakening of the west coast ridge will result in a mild westerly flow aloft developing across the Great Basin for Saturday.
Cold front now well east with weak high center settling in behind. Dewpoints likely to drop into the lower 30s along the upper Cumberland. High pressure to build in with decreasing clouds overnight.
752 PM EDT Fri Mar 30 2018 An approaching cold front will spread mainly high cloud cover over the area through the night. Quiet evening is expected, with perhaps an isolated shower or two toward midnight as a week cold front sags into the region.
increasing low/mid clouds and breezy south to southeasterly winds are forecast ahead of a cold front looking to move into Northeast Oklahoma mid/late afternoon and through much of the CWA Saturday evening. The current exception is across SE OK where lighter winds and cooler temps prevail.
1111 PM CDT Fri Mar 30 2018 Wx map shows high pressure ridge from TX/LA to TN this evening. /issued 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.
A cold front will move to the southern peninsula by Saturday morning. Expect higher clouds and humidity with somewhat cooler temps this weekend with the decaying front remaining near the area.
Cold front now well east with weak high center settling in behind. Dewpoints likely to drop into the lower 30s along the upper Cumberland. High pressure to build in with mostly clear skies overnight.
/issued 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.
A mid/upper level ridge is progged to build across eastward across the area through Sat night, which may lead to a better set up for fog, however low level winds will also be slightly stronger, leading to more stratus.
The area of high pressure will move off to the east tonight into Saturday. On the back side of the high the pressure gradient will tighten across the area.
Radar was showing some light snow echoes extending from the Twin Cities into northwest WI ahead of this wave and cold front. The other Water Vapor feature was a potent mid-level trough pushing southeast out of the Alberta Rockies.
Otherwise, not much in the way of changes through the day on Saturday with cold front still expected to make its way south across all sites by end of 06Z forecast. These winds will relax some on Saturday ahead of a cold front that will move into northwest Oklahoma by late morning and to near the I-44 corridor by the end of the forecast. 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.
An upper level trough will move eastward through the northern Plains and Great Lakes region tonight and Saturday and send a cold front southeastward through our forecast area Saturday afternoon and evening. Colder air will filter southeastward into our area behind the cold front Saturday night with unseasonably cold low temperatures Saturday night.
1050 PM EDT Fri Mar 30 2018 High pressure will build in from the Midwest through Saturday.
/issued 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.
1156 PM CDT Fri Mar 30 2018 For the ArkLaTex, light SE/E wind or calm overnight as high pressure slides E with our winds veering to S/SW for Saturday with speeds 10-15G24KT.
Surface analysis this evening places a 1025 mb ridge of high pressure over the Ohio and Middle/Lower Mississippi Valleys. /issued 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.
Bigelbach 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.
A cold front eases south of the waters through this evening with a few heavy rainshowers and locally higher winds and seas. High pressure builds in over the weekend with some perhaps robust winds.
Partly cloudy skies and southerly winds will continue across western Kansas this evening with a trough of low pressure across eastern Colorado. This will help push a cold front through the area starting around sunrise tomorrow and making it through the entire CWA by tomorrow afternoon. Expect a cold Easter behind the aforementioned cold front with Canadian high pressure building into the region.
A southerly return flow will get established toward daybreak ahead of an approaching cold front. Sat morning, as its parent low pressure system moves eastward into the Great Lakes, the cold front will continue its approach.
716 PM EDT Fri Mar 30 2018 A cold front moves off the coast tonight. High pressure builds across the area Saturday.
A clipper system, currently centered over the Northern Plains will continue to move across the region this evening, bringing a strong cold front with it. Areas along and north of the Highway 14 corridor could see freezing drizzle, and a brief change to snow right before daybreak. Arctic high pressure remains in control over the region on Saturday and continue through the beginning of the work week.
/issued 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.
719 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.
All other echoes around and just to the northwest of the Lower Keys are chaff.
An approaching cold front will bring increased cloud cover and higher wind speeds, around 10 to 15 knots to the forecast area on Saturday.
919 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.
Temperatures on Saturday will be quite a bit cooler than today, especially in the north.
Surface winds will trend to southwest ahead of an incoming cold front. 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.
Warmer temperatures across the south in the low 30s should be anticipated. For Saturday, with dry conditions continuing, the main story will increasing winds and increasing clouds ahead of the next low pressure system.
Dirty ridge of high pressure over the eastern Pacific with low clouds/fog surging well north to the Monterey County line this afternoon.
Forecast on track this evening as the upper trough departs to the east and skies continue to clear. Chattanooga Airport, TN 40 69 49 70 / 0 0 20 30 Knoxville McGhee Tyson Airport, TN 38 67 47 63 / 0 0 20 40 Oak Ridge, TN 39 68 49 63 / 0 0 20 40 Tri Cities Airport, TN 34 66 44 59 / 0 0 30 40.
/issued 1111 PM CDT Fri Mar 30 2018/ Wx map shows high pressure ridge from TX/LA to TN this evening. /issued 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.
720 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.
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.
532 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.
Dry and mild conditions will prevail on Saturday under high pressure aloft.
1137 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.
Strong south winds with gusts to 28 KTS are expected by mid morning at KABI and KSJT as lee trough strengthens. 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.
The current exception is across SE OK where lighter winds and cooler temps prevail.
This storm will move quickly east, pushing a strong cold front into the local forecast area before sunrise, and sweeping it across the entire area before noon. Saturday will be much cooler with afternoon temperatures only in the middle 30s to middle 40s, and while cool air is not particularly conducive to fire weather issues, the combination of strong winds and a dry airmass still point to very high fire danger through a good part of the day.
A ridge of high pressure along the West Coast will flatten as it moves east and over Arizona on Saturday. The ridge axis will move east of the state by Saturday afternoon.
723 PM EDT Fri Mar 30 2018 A cold front will move across the area this evening with high pressure building into the region Saturday.
945 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.
The high risk for rip currents has expired. A moderate to strong offshore wind flow is expected tonight through mid morning Saturday as high pressure continues to build from the north.
943 PM CDT Fri Mar 30 2018 With sfc ridging having shifted well to our east this evening, we should begin to see the winds across our western zones beginning to turn around to the southeast as we go through the night with winds becoming southerly across all areas during the day Saturday with a tightening pressure gradient. /issued 713 PM CDT Fri Mar 30 2018/ For the ArkLaTex, Chamber day with light NE winds becoming vrb overnight as high pressure slides E our winds will return from E/SE and then S/SW for Saturday with speeds 10-15G24KT.
This appears simple enough with mainly clear skies and a big ridge in place however confidence is getting a bit bruised by the strengthening inversion. Looking at 24hr temperature change much of the higher terrain is a good 5 to 15 degrees warmer this morning than last and the valleys are generally cooler. Craig 15 degrees and Cortez 20 degrees cooler. Warmer air over cooler and drier air suggests valleys and basins will struggle. All the midrange models show the strong Great Basin ridge continuing to dominate weather across the western U.
An upper level trough is approaching from the northwest, and will bring midlevel clouds followed by low VFR clouds through the late afternoon/evening. Cooling underneath the low may generate some light snow at TRI, with MVFR cigs, but it should not be heavy enough for lowered vis or accumulations on the ground.
/Today through Tonight/ Cold front moving through the state this morning and winds have begun to gust across the northern half of the CWA.
Should therefore see near average warmth across east TX whereas elsewhere, temperatures will be a few degrees cooler than average. Aloft a highly amplified upper trough of low pressure dropped from Eastern Canada across the Great Lakes Region and the Mississippi Delta and into the Southwest Gulf of Mexico, while a large upper ridge of high pressure was centered over California and Nevada and reached across the Pacific Northwest and Western Canada. In the Northwest flow between the departed upper trough and ridge out West a disturbance will help nudge a dry surface cold front/trough across the forecast area today.
Afternoon temperatures should range from the lower to mid 30s along and east of the MO River to near 40 across our western counties. Tonight into Sunday night, building mid-level heights coupled with an increasingly zonal low-level wind component will favor warmer temperatures with highs on Sunday ranging from the mid 40s east to mid 50s west.
120 PM EST Sat Dec 9 2017 Low pressure will track up the mid Atlantic coast today.
349 PM EST Sat Dec 9 2017 Low pressure will move off the mid Atlantic coast tonight.
For later today, will be watching a warm front move into the western CWA with mixing winds turning northwesterly. With 925mb temps rising into the lower single digits above zero Celsius, we should see some mild temps moving into the western counties. 21Z 925mb temps are a couple ticks warmer across central SD compared to 21Z yesterday, so took yesterday's highs for MBG and PIR and added a couple degrees. Over the eastern CWA, low level temps stay on the chilly side, with less favorable mixing, so cooler upper 20s to lower 30s will be all that's reached. The warm front continues marching east across the rest of the CWA overnight, with northwest breezes being maintained.
253 PM EST Sat Dec 9 2017 A cold front has swept through the service area today, with both air and dewpoint temperatures having commenced a slow fall. Currently, air temperatures in most Keys island communities are near 70F, with dewpoint temperatures in the lower or mid 60s. Upper Keys communities will be cooler than the middle and lower Keys, thanks to persistent, off-mainland air trajectories, especially at night. A powerful cold front has exited the service area this afternoon.
Weak low pressure will propagate southeast to near Baudette by mid-evening. If the strongest winds do not occur where fresh snow falls, the current snowpack is likely not very blowable with recent warmer temperatures.
Finally, above seasonal maximum temperatures are anticipated over the forecast district today with maximum temperatures over eastern sections running some 5F to 10F warmer than values noted yesterday, while majority of western portions should realize maximum temperatures running near to slightly below temperatures recorded yesterday. Not much change in forecast thinking as the ridge is going to remain on the west coast while troughieness continues over the midwest.
336 PM EST Sat Dec 9 2017 Low pressure and a cold front will push east across the region this evening. Weak high pressure will then build into the area later tonight into Sunday.
1118 AM CST Sat Dec 9 2017 The persistent upper level pattern of ridging across the western CONUS and troughing across the Great lakes and Ohio River Valley will continue to prevail through the entirety of the forecast period.
Closed low pressure was located over Hudson Bay with a trough of low pressure extending ssw into central Mexico. West of this feature, high pressure was located over northern California with a ridge extending north into northern portions of the Yukon. At the surface: low pressure was present north of Milwaukee Wisconsin with a cold front extending west into northeastern South Dakota. For this morning, a cold front will back into northeastern Nebraska, then lift east as a warm front later this afternoon. The highly amplified ridge will remain over the western Conus through the extended. The northwest flow will usher a series of upper waves down the high plains with increasing upper level winds.
304 PM EST Sat Dec 9 2017 A strong upper level trough and surface cold front will cross the region this evening.
Northwest surface winds generally below 15 kt early this afternoon will diminish by late afternoon as lee trof develops and gradually strengthens over eastern New Mexico. This pattern will also keep the Panhandles dry while a pair of cold fronts traverse the area. Our first cold front is expected to sweep across the Panhandles for the start of the workweek.
240 PM EST Sat Dec 9 2017 Digging upper trough/cold front pushes through tonight.
Temperatures are expected to fall into the lower to mid 30s nature coast, and in the upper 30s inland to mid to upper 40s coastal for the central and southern zones. Will raise a freeze warning for inland Levy county for tonight as a few hours of sub-freezing temperatures is possible tonight. At the surface, high pressure will stretch across the Gulf of Mexico and Florida to start the week with fair cool and dry weather. Winds will diminish Sunday night and with mainly clear skies expect temperatures to dip near freezing across much of the Nature Coast with patchy frost possible Nature Coast southward into the central interior.
There's little indication that the strong blocking upper ridge to our west will move much during the next 24 hours. The rather strong n-nwly flow on the front side of this ridge will produce another day of gusty n-nwly sfc winds on the plains, esply east of a Wellington (Larimer Cty) to Limon (Lincoln Cty) line during the afternoon with sustained speeds of 15-25 mph and gusts to around 35 mph. Although areas exposed to gusty downslope breezes near the foothills, expect warmer min temps in the upper 20s/low 30s.
Strong upper level ridge will keep the region dry and warm through the weekend. However, some high clouds have moved over the top of the ridge axis so have updated sky condition to increase coverage for this morning. An upper level ridge over the Western USA will provide generally quiet conditions across the forecast area today through late Sunday morning.
An upper level trough and front are pushing through the region early this morning. A colder air mass will spread over the region again today behind the front, as highs range from the middle 30s across central Missouri to the lower 40s across southeastern Kansas and far southern Missouri.
322 PM CST Sat Dec 9 2017 The weather pattern wont change much over the next 4-6 days as we keep upper level troughing over the eastern U.
1155 AM MST Sat Dec 9 2017 Fairly quiet and dry weather is expected the next several days as high pressure remains parked across the western United States. Across the Southwest, an upper level low is beginning to undercut the West Coast ridge. Ensemble means are suggesting a short wave trough will flow down the front/east side of the ridge in the Thu- Sat time frame.
336 PM EST Sat Dec 9 2017 A frontal boundary and associated weak low pressure will move away from the South Carolina coast this afternoon.
1111 AM EST Sat Dec 9 2017 A frontal boundary and associated weak low pressure will move northeast away from the South Carolina coast this afternoon. An upper level low pressure system will move through the area this afternoon. Model soundings suggest some cooling in the low to mid levels and increasing lift as weak low pressure moves away from the South Carolina coast and the mid level short wave crosses the region. Precipitation still expected to diminish during the afternoon as the upper trough crosses the region. Highs temperatures will struggle to rise and will be well below normal in the low to mid 40s. A strong short wave trough will move through the area tonight. Broad upper trough over the eastern CONUS.
A large mid/upper trough was impacting much of the eastern Conus while a mid/upper ridge was situated over California and Nevada allowing northwest mid/upper flow to prevail across the central Conus. Trended today-Sunday a bit warmer with some light downslope flow and dry air allowing large diurnal spreads to develop.
307 PM CST Sat Dec 9 2017 Patches of snow are still lingering over parts of southeast LA and southern MS despite clear sky and temperatures reaching the low to mid 40s.
High temperatures in the low to upper 50s. 850mb temperatures warm about 3F to 10F across the area supporting highs in the low to possibly mid 60s. Low temperatures in the low 20s to low 30s.
Lows in the 20s are expected areawide, with upper teens not entirely out of the question in cooler spots.
GAH PREVIOUS SHORT TERM DISCUSSION: The weather this weekend will be dominated by strong high pressure embedded within the strong ridge anchored over the mountain west.
Cold air advection will continue for the rest of tonight as winds will remain northerly behind the cold front.
Look for strong high pressure to continue over the area through the weekend and into the mid-week period.