Aikyam-Lab/Synoptic-Bench huggingface dataset:
Cold front will be pushing south through the day tomorrow. Better rain chances come tomorrow as a cold front works its way into the area.
Strong southerly winds around 15 to 20 knots with gusts to 30 knots will be possible through the TAF period ahead of the cold front. Wind shear also looks to be an issue after 00Z for all terminals as the low level jet strengthens.
428 PM EST Mon Mar 6 2017 High pressure off the coast will move farther out to sea on Tuesday.
A cold front will slice through the area tonight from northwest to southeast. but still expect late afternoon cape values around 1500-2000 J/kg to develop in the highly sheared environment. Cooler/drier weather is in store for Tuesday.
1103 AM MST Mon Mar 6 2017 Winds are decreasing at low elevations behind the departing cold front. A cold front continues to pass over the area this morning, resulting in strong gusty southwesterly and mountain snow. Cold air will continue to infiltrate the area today resulting in much cooler temperatures. Temperatures will begin to moderate on Tuesday as weak high pressure begins to build over the area. The current satellite water vapor image is showing a trough of low pressure over the western states with a ridge of high pressure over the Ohio Valley.
The gusty winds will likely persist through mid evening ahead of approaching cold front which will move into far northeast Oklahoma early this evening. The more widespread severe threat will occur along the cold front with thunderstorms expanding in coverage and becoming more linear with time along frontal boundary through the evening hours. The severe threat should end around 3 am as the cold front sweeps south of area into the ARKLATX region.
/issued 1001 AM EST Mon Mar 6 2017/ High pressure off the mid-Atlantic coast continues to control the weather over the area.
1250 PM EST Mon Mar 6 2017 A warm front over Lake Erie will continue to move north of the area today. Low pressure over the Dakotas will move northeast to northern Ontario by Tuesday night forcing a cold front east across the local area Tuesday afternoon.
The low-level jet will intensify this evening in the warm sector of the approaching mid-latitude cyclone. Scattered showers, and a few thunderstorms, will develop this evening in the warm advection regime ahead of the approaching cold front. MUCAPE values surge just ahead of the cold front, with the NAM being the most aggressive. Efficient radiational cooling conditions set up Tuesday night as winds become light and variable with the approaching surface anticyclone.
345 PM EST Mon Mar 6 2017 Cold front passes late Tuesday evening.
135 PM EST Mon Mar 6 2017 High pressure along the coast will move offshore Today.
1141 AM EST Mon Mar 6 2017 High pressure will cross the region today. A warm front will cross the region Tuesday.
Moisture profiles also on the high side, with latest GPS-MET and LAPS data showing values around 1. With the daytime heating, scattered showers have developed over the area, especially over upper Southeast Texas at the nose of the 85H-70H theta-e ridge. Also, a surface cold front/dry line feature is noted from the high plains down into west Texas. This will help bring the tail end of a weak surface cold front into the forecast area late Tuesday Afternoon.
1239 PM EST Mon Mar 6 2017 High pressure will push off the east coast today. A cold front will sweep southeast across the region late Tuesday.
348 PM CST Mon Mar 6 2017 High pressure off the Atlantic Coast this afternoon. Low pressure over eastern North Dakota with a cold front into the Texas Panhandle. Upper levels show ridging over the Appalachians and a negatively tilted trough moving across the northern Plains states. Most areas reporting temperatures in the lower and middle 70s this afternoon with dew points running from upper 50s to middle 60s.
The day begins with an amplified long- wave upper- level pattern across CONUS, with the ridge over the East. The western trough is digging east into the central plains east of us. The very distinct cold front will have pushed mostly through our area, but the base of the trough will be ejecting abundant moisture northeast over the cold front. The much colder air-mass mixing in behind the cold front will produce snow and a wintry mix.
1002 AM PST Mon Mar 6 2017 Updated Aviation Section High pressure will gradually build in from the west this week.
235 PM CST Mon Mar 6 2017 Strong southerly flow continues to push relatively warm and moist air into the area ahead of a dry line and cold front to our west. Precipitation should clear the area by sunrise tomorrow, with cooler and much drier air building into the area for Tuesday.
1010 AM CST Mon Mar 6 2017 Currently the low pressure center was between Mobridge and Aberdeen SD with the trough extending northwestward to between Bismarck/Jamestown and Minot/Devils Lake. until the trough moves east and the strong northwest winds increase to help dissipate the fog early this afternoon. A deepening mid level trough, currently located over eastern Montana, will continue to dig and eventually take on a negative tilt and close off over North Dakota today. At the surface, low pressure will start to develop over the southwestern part of the state. Rapid cyclogenesis will take place as this low propagates quickly northeast across the state, eventually moving into southeastern Manitoba by this evening. The GFS has been consistent with very strong pressure rises as the low races northeast.
352 PM EST Mon Mar 6 2017 High pressure along the coast will move offshore Today.
A cold front will move into northern areas of the CWA early Tuesday morning and clear southern areas early afternoon. Cooler behind the front with gusty north and northeast winds in the afternoon.
242 PM CST Mon Mar 6 2017 Winds have increased this afternoon in response to the upper trough passing through the Central and Northern Plains. The High Wind Warning for the Guadlupe Mountains and Wind Advisories for the adjacent plains will remain in effect through this evening. Winds will begin to decrease once we are the backside of the trough and a cold front will push southward late tonight. Winds associated with this front should not be very strong, but will funnel some cooler air to the area. More westerly flow in the upper level pattern will remain through mid week while a trough starts to set up off the coast of Baja.
104 PM EST Mon Mar 6 2017 A cold front will cross the region Tuesday.
A developing low pressure system is centered over the High Plains with a warm front extending east across northern WI and a cold front extending to the SW. The low pressure system will continue to intensify as it moves to the northeast. The deepening of the low will serve to enhance an already strong pressure gradient across the region. As such, wind shear vectors will also be quite strong as the potent cold front extending from the low swings though southern Wisconsin late this evening.
Even then the gradient won't tighten too much Tuesday as plains low pressure gives way to a cold front along a shallow trough approaching from the north, backed up by higher pressure farther upstream. Cloud cover will gradually rise later this morning as daytime heating breaks through the lowest inversion layer. Surface onshore flow remains from the southeast around the strong ridge of high pressure along the eastern seaboard.
433 PM EST Mon Mar 6 2017 High pressure off the coast will move farther out to sea on Tuesday.
Very strong winds Thursday afternoon through evening in the Sunny and warm today with high pressure aloft and weak offshore flow. On Thursday a strong low pressure trough moving across the Great Basin will bring strong westerly winds to the mountains and deserts.
A cold front will bring a chance of rain today through tonight.
1002 AM MDT Wed Mar 29 2017 Current surface analysis shows low pressure system that brought the recent rains is centered over southeast KS. Will keep highs mostly in the 50s, with some areas near 60 over northeast WY and the far western SD plains, as warmer air pushes in from the west. 08z surface analysis had weak high over the CWA and inverted trough across eastern NE into eastern SD. Water vapour loop showed upper low entering TX panhandle with precipitation shield mainly southeast of the CWA, although some weak returns/-RA noted over south central SD under weak 75kt jet streak aloft. Today, upper low moves northeast with lingering lift exiting the CWA this morning and staying southeast of the CWA this afternoon. Thursday, upper trough splits with main energy diving into the four corners area.
But this will change this afternoon as the warm front lifts north of the area and the accompanying cold front sweeps in from the west.
1005 AM CDT Wed Mar 29 2017 Mid-morning update to reflect pre-warm frontal convective activity moving east-northeast through the Quad State region. Upper low was over New Mexico this a.
639 AM CDT Wed Mar 29 2017 A low pressure area in central OK will slowly lift northeast, only reaching as far as eastern KS by 00z this evening. The first trend is a slight northward shift in the storm track for Thursday, which allows warmer temperatures, higher instability, and a better risk of a few severe storms over much of the forecast area.
1137 AM EDT Wed Mar 29 2017 Clouds gradually break today as high pressure arrives.
Issued by National Weather Service TAMPA BAY RUSKIN FL 955 AM EDT Wed Mar 29 2017 Ridging surface and aloft will continue with a rather light and variable low level flow becoming onshore near the coast this afternoon as the sea breeze develops.
/issued 547 AM CDT Wed Mar 29 2017/ Vigorous upper low nearing the TX panhandle per latest water vapor satellite imagery, with latest sfc analysis showing an elongated area of low pressure over northern TX, with a leading dryline/front extending south through Central TX and a trailing cold front stretching west across north TX into NM. Flat ridging in the wake of the departing upper low will result in quiet weather on FRI, with good rain chances returning late SAT through SUN night with the approach and passage of another upper low. 13 Strong and gusty south winds along with rough seas are expected to persist today as a low pressure area and an associated cold front approach the area.
603 AM CDT Wed Mar 29 2017 A warm front will lift north through the state through this afternoon. with a cold front then pushing east across the state on Thu. but the last several runs of the high-res near-term guidance keeps suggesting this activity dissipating by mid-morning before reaching central sections of the state. The warm front will have lifted north of the state by late this afternoon and early evening. but additional SHRA/TSRA will remain possible along the main cold front which will surge east across the state by Thu afternoon.
Chattanooga Airport, TN 80 58 80 59 / 0 10 30 80 Knoxville McGhee Tyson Airport, TN 76 55 76 57 / 0 10 20 80 Oak Ridge, TN 77 55 77 57 / 0 0 20 80 Tri Cities Airport, TN 74 50 73 54 / 0 10 20 70 TN.
Also, northerly surface winds will be sustained near 20 kts at the terminals this evening due to a cold front passage. Lift and mid-level instability associated with the low has already resulted in scattered shower and t-storm development across the western South Plains. The bulk of the lift associated with the low will shift northward into the TX Panhandle by late morning, and after 10 am or so we should see diminishing coverage and intensity of the shower and t- storm activity. Cooler air will move in with a southward-moving cold front as the upper low swings northeast.
The rain will gradually decrease through the early to mid afternoon as a mid and upper low tracks into northern Oklahoma. By mid to late afternoon, widely scattered showers and thunderstorms may form across the eastern third of Oklahoma, as a cold front approaches. Showers over the Texas Panhandle and far western Oklahoma this morning are associated with the upper low, and will probably shift slowly north or northeast with time.
741 AM EDT Wed Mar 29 2017 Aviation A ridge of high pressure will track eastward through Michigan today. Clouds will thicken up during the day as a low pressure system approaches from the southwest.
619 AM CDT Wed Mar 29 2017 Just a few patches of light rain remaining across central/south central SD early this morning as the main area of low pressure is well south of the region.
Winds will increase again Thursday afternoon and turn to the southwest as another cold low pressure system approaches the state.
1221 PM EDT Wed Mar 29 2017 Hydro A ridge of high pressure will track eastward through Michigan today. Clouds will thicken up during the day as a low pressure system approaches from the southwest.
516 AM MDT Wed Mar 29 2017 08z surface analysis had weak high over the CWA and inverted trough across eastern NE into eastern SD. Water vapour loop showed upper low entering TX panhandle with precipitation shield mainly southeast of the CWA, although some weak returns/-RA noted over south central SD under weak 75kt jet streak aloft. Today, upper low moves northeast with lingering lift exiting the CWA this morning and staying southeast of the CWA this afternoon. Thursday, upper trough splits with main energy diving into the four corners area.
524 AM MDT Wed Mar 29 2017 Low pressure that brought us the widespread rain and snow yesterday now located in eastern New Mexico. Water vapor imagery showing a ridge of high pressure just off to the northwest this morning. Expect this ridge to build over the area through the day with all precip ending by sunrise across southeast Wyoming.
Expect MVFR conditions through 15Z before a pre-frontal trough moves through the Rio Grande valley and northern ranchlands later this morning. Low level wind shear will continue this morning across the coastal sections of the CWA as a 55kt low level jet continues across the lower Texas coast. before the prefrontal trough moves through later this morning. A weak cold front will move into deep south TX late tonight and this will provide a slight chance of showers and thunderstorms. late tonight through early Thurs morning before the front moves offshore the lower TX coast. Some slightly cooler air will filter into the area Thursday providing near normal temperatures for the area for a change.
941 AM MST Wed Mar 29 2017 High pressure building across the Desert Southwest will result in a warming trend through Thursday.
A secondary cold front this evening will result in a wind shift to the NW. Continuing the trend on temperatures, earlier clearing should translate to warmer than blended guidance max temps for today. Good midday packing of isobars over the Edwards Plateau should enhance mixing and drop RH values in the low teens along the Rio Grande, while picking surface winds to around 20 mph with gust over 35 mph NW of DRT.
Attention then turns to precip ahead of approaching low pressure. with cloud bases gradually lowering into the afternoon as deeper moisture arrives ahead of approaching low pressure.
/Issued 423 AM CDT Wed Mar 29 2017/ Water water imagery and H5 heights show upper level trough churning across eastern New Mexico and the Texas Panhandle early this morning. An upper level trough deepens as it moves east of the Hudson Bay into Quebec and as a result the ridge over the Midwestern states has slowed its progress east. This in turn has slowed movement of the closed low over the Southern Plains as well. The low will slowly move east and begin to take more of a northern turn as it moves up into Kansas and then onward to Missouri by Thursday evening. Diffuse warm front has been working its way north and currently looks to extend across east-central Oklahoma and west- central Arkansas.
Showers over the Texas Panhandle and far western Oklahoma this morning are associated with the upper low, and will probably shift slowly north or northeast with time.
Winds today will gradually veer ahead of an approaching cold front with decreasing cloud cover through the mid-morning hours. There remains a low chance for rain/storms generally along and north of I-20 tonight as the upper level low crosses the Plains. The track of the upper level low is now farther north than previous days, so the potential for additional storms tonight looks to be low. A front will move through the region tonight bringing cooler temperatures.
Widespread light precipitation pushing east through western San Bernardino and southern Inyo Counties this morning as an area of low pressure moves onshore over southern California. We are also starting to see increasing precipitation over far eastern Clark and Mohave Counties as the moist southerly flow ahead of the low is bringing increased lift to that area. Weak high pressure will then over over the area Tuesday with light winds and mild temperatures.
High pressure Monday afternoon through Tuesday. A weak cold front mid week. Winds in the higher elevations have not have gusts over 40 mph since mid evening. Upslope stratus deck will gradually dissipate this morning as warm air advection occurs in the lower levels.
510 AM EST Mon Nov 21 2016 An upper low over New England will slowly drift northeast toward the Canadian maritimes early this week.
Cold high pressure was sitting over the Mid State this morning. Daybreak temps will be in the low to mid 20s, with some teens in the usual colder spots. Through the day, sunshine will boost temps into the lower 50s with light winds. Tuesday will bring better temperature recovery as the high pressure center moves off to the east.
/issued 415 AM CST Mon Nov 21 2016/ The axis of an upper ridge will move across the area today allowing dry weather and abundant sunshine to prevail. Farther to the west, the next upper trough will approach the Four Corners Region by this evening. The upper trough will begin to emerge onto the Plains by Tuesday morning.
953 AM CST Mon Nov 21 2016 The mid/upper-level ridge axis remains to the west today, resulting in northwesterly flow aloft over the Mid-South. The surface anticyclone will gradually slide off to the east over the next 12-24 hours, with southerly flow resuming across the region. Winds will remain light today, with temperatures ranging from the low/mid 50s over northwest TN to the lower 60s across north MS and the Memphis metro area. High pressure prevails across the region. Clear skies and light winds are creating good cooling conditions and temps range from the mid 20s along the TN River to the lower 30s in the Delta with a few hours of cooling left. High pressure slides slowly east during the period. Low pressure will be moving through the Plains on Tuesday with a cold front pushing through the southern Plains.
/Issued 248 AM CST Mon Nov 21 2016/ Early morning water vapor imagery detects a well-defined upper low spinning just off the southern CA coast. The best chances of storms may hold off until late Tuesday afternoon/early evening (primarily across southeast OK/western AR) as the cold front eventually overtakes the dryline and the main upper trof punches into the area. Drier and cooler weather expected behind the front for the remainder of the week. with another weak (and dry) cold front moving through Thanksgiving night.
This system will bring a cold front across the state Tuesday and Tuesday night.
Satellite imagery shows a trough pushing over the west coast, which will put the forecast area under southwesterly flow aloft. Moisture from the Pacific will get tapped into today with the southwesterly flow, so I do expect clouds to increase through today ahead of the trough. Temperatures should reach the lower 70s for a majority of the forecast area today before clouds consume the entire forecast area by early evening.
Another possible complication will be freezing rain. If surface temperatures can fall to freezing that may happen for a few hours right around sunrise. Added just a slight chance for freezing rain to get the wording into the forecast. It will also be windy on Tuesday behind the surface cold front, with gust potential of about 40kts midday Tuesday.
521 AM CST Mon Nov 21 2016 Early this morning satellite imagery shows the region under the influence of a progressive upper level ridge with a notable trough seen swinging onshore across the West Coast.
Valley temperatures are above freezing with mainly wet roads. It's looking like temperatures are at or below freezing at Lookout and Marias Passes however roads also look to be just wet at this time. The other impact this morning will be some patchy fog in the lower valley of northwest Montana and central Idaho. The region will be under the influence of a weak troughiness pattern today producing enough instability for scattered showers this afternoon. Tuesday a weak ridge will encompass the region and bring more or less a dry day with valley fog expected.
Upper level ridge will shift eastward today as storm system moves out of the Southwest US. At the surface, lee side trough will develop over the Highs Plains resulting in onshore flow across South Texas today. Temperatures will continue a moderating trend with highs 5 to 10 degrees warmer than yesterday. Lows will be in the low/mid 60s in most locations with upper 60s to low 70s along the immediate coast. Chances for showers and thunderstorms will begin to improve on Tuesday as moisture and lift increase ahead of upper trough.
This cooler, drier air will be the major player for weather in South Florida through much of the week.
Clear skies will continue to prevail so chilly morning temperatures below or near freezing (a bit warmer along the coast) will rebound rapidly after sunrise climbing into the mid to upper 60s by afternoon. Could see a few sheltered sites closer to the coast that decouple from the northerly wind flow fall near to below freezing.
Temperatures were just a few degrees above the freezing mark over central Louisiana. Warming trend will begin today as high pressure ridge shifts east of the area.
1037 AM EST Mon Nov 21 2016 Cool high pressure will prevail into the middle of the week.
/ISSUED 338 AM CST Mon Nov 21 2016/ Relatively quiet weather will continue across North and Central Texas today as an upper ridge remains in control of the region. Activity will then surge east during the late evening and overnight hours, with cooler and drier air spreading in on the back side of the trough and behind the cold front. A stronger trough will move quickly southeast from the Great Basin into the Southern Plains as we move through the weekend.
A cold front moving from west to east will lower snow levels through the day. Dry and warmer weather will return on Tuesday, lasting through the week.
502 AM CST Mon Nov 21 2016 An upper level ridge is spreading east across the Plains early this morning and will spread over the region today. Southerly winds will usher warmer conditions into the area from west to east. An upper level trough and front will approach from the west and spread across the region Tuesday and Tuesday night. Showers may linger into the overnight hours with the passage of the trough. Slightly cooler conditions will spread into the area behind this system for the rest of the week with highs in the 50s and lows in the 30s expected each day.
642 AM EST Mon Nov 21 2016 High pressure will build southeast from the upper Midwest to over the mid-Atlantic region through late Tuesday.
/issued 349 AM CST Mon Nov 21 2016/ SHORT TERM (Today through Tuesday): During the forecast period, a mid- level ridge of high pressure over the Lone Star State will shift east as a 500 mb trough of low pressure pushes into the western half of Texas. At the surface, high pressure across the Gulf of Mexico will interact with low pressure moving east through the Central Plains, resulting in warming and above normal temperatures.
1051 AM EST Mon Nov 21 2016 An upper low over New England will slowly drift northeast toward the Canadian maritimes early this week.
Issued by National Weather Service Mount Holly NJ 934 AM EST Mon Nov 21 2016 Low pressure over southern Quebec will continue to cause blustery conditions through today.