Aikyam-Lab/Synoptic-Bench huggingface dataset:
1227 PM CDT Wed Apr 5 2017 Upper low over the midwest continues to rotate eastward today, leaving North and Central Texas under the influence of high pressure. Mainly clear skies are noted on surface and satellite observations across the area, with a few clouds lingering on the backside of the upper low, currently located over southern Iowa and northern Missouri. /ISSUED 313 AM CDT Wed Apr 5 2017/ The cold front has cleared all of North Texas early this morning as evidenced by a wind shift to the northwest, much cooler temperatures, and a broken line of precipitation now to the southeast of the region. High pressure will build into the Southern Plains today and will be centered over Texas tonight. Lows tonight should fall into the low/mid 40s areawide with a few outlying spots falling into the upper 30s.
A progressive upper pattern expected during the period with the upper trough currently over the SRN Plains moving to the ERN CONUS while another system approaches the West Coast (GFS deterministic.
Canadian high pressure will slowly slide south tonight with winds becoming light and variable.
129 PM EDT Wed Apr 5 2017 A warm front will extend through the forecast area today. The front will lift north of the area tonight ahead of a strong cold front. The cold front will move through the area late tonight. Also, there may be a prolonged period of thunderstorms along the warm front this afternoon into the evening resulting in excessive rainfall.
Showers will accompany the passage of the upper level trough. Otherwise much cooler temperatures can be expected with temperatures steadying off or falling into the upper 40s to lower 50s. Our region will be under the influence of a northwesterly flow aloft Thursday to the west of the deep upper level trough to the east. Another disturbance sliding south on the backside of this upper trough may maintain cloud cover and a few showers in the eastern Ozarks Thursday. Upper level ridging will build back over the region heading into this weekend while southerly winds return. A broad upper level trough will makes it way from the western U.
The remains of a cold front stalled over Western Washington will allow areas of light rain to continue through tonight. An upper level trough will move across the area Thursday morning extending the rain into early afternoon.
/Tonight through Thursday/ Cyclonic from from low pressure south of the state in southern Illinois will persist overnight and into Thursday. Further west, a region of scattered showers has developed within a pv trough with embedded stronger elements.
150 PM PDT Wed Apr 5 2017 High pressure aloft will drift east tonight and a Pacific trough will slowly move in from the northwest.
1132 AM MDT Wed Apr 5 2017 18Z TAF CYCLE Anticipate clearer skies with a few high clouds and less winds than previous as upper level ridging builds over the state.
340 PM CDT Wed Apr 5 2017 A cold front moved through the Ozarks from this morning into this afternoon leaving brisk northwest winds and areas of drizzle and light rain showers in its wake. Meanwhile, we expect the rain shower/drizzle activity to persist into this evening as upper level low pressure digs right over the Missouri Ozarks. We will also see a gradual clearing trend overnight as that upper level low begins to move east of the region.
Still seeing an extensive band of wrap-around cu (low VFR cigs) continuing to spill SE across the region early this afternoon, along the base of a deep upper trough extending from the Midwest S into ECntrl TX. The cigs should linger over the ELD/MLU terminals by 03Z, before SKC returns in wake of the departing upper trough. /issued 1040 AM CDT Wed Apr 5 2017/ Base of the upper trof making its way across our area this morning. Otherwise, deep low pressure at the sfc to our nw making for a very tight pressure gradient, and therefore winds are quite gusty.
/12Z TAFS/ Clear skies behind yesterday's cold front will allow conditions to remain VFR for the entire TAF period. Winds will become relatively calm tonight for the I-35 TAF sites with high pressure at the surface before southerly winds return late tomorrow morning. Main hazard highlight will be the below freezing temperatures expected for portions of the Edwards Plateau, Hill Country, and areas of the I-35 corridor early Sunday morning. As for today, Saturday - expect a much cooler and windy start with readings in the upper 30s and 40s by dawn. The wind will make it feel even cooler despite the full sun.
SHORT TERM (Today through Sunday): Drier and cooler conditions will dominate the weather over the next 36 hours in the wake of a cold front. It will be sunny and warmer on Sunday with high temperatures in the upper 60s to lower 70s, with light north winds shifting to east late in the day as high pressure shifts to the east.
545 AM EST Sat Nov 19 2016 Mild weather today will be brought to an abrupt halt by a late day cold front. A chilly weekend will follow including some freezing temperatures at night.
A ridge of high pressure persists from the northeastern Gulf of Mexico to the Delmarva. A persistent blanket of stratocumulus based at 5-6 kft has held temperatures in the lower to mid 70s. A cold front will approach the Keys overnight and push through Sunday.
The cold front has passed the entire area and latest radar trends indicate that the precipitation has ended across our region. Meanwhile, we will be under northwest flow aloft, as the upper trough pushes east and a ridge slowly pushes east into the Plains.
The timing remains for north central Idaho to see precipitation expand into the high terrain during the morning and become widespread by the late afternoon. Rising snow levels are likely with the incoming warmer weather system, but cool air in valley locations may allow for a mix of precipitation types with the potential of freezing on roadways after sunset particularly in Libby, Eureka, Kalispell and Marias Pass through Sunday morning.
1019 AM EST Sat Nov 19 2016 A cold front will push across the Florida peninsula later today and tonight. Much cooler drier air will advect across the forecast area tonight and Sunday.
Upper level ridging over the Western Plains will result in the Lower Mississippi Valley remaining under NW flow aloft through the short term while a broad region of high pressure centered over the Southern Plains filters into the region at the surface.
High pressure ridge that has been slow moving along the eastern seaboard was shifting south ahead of an approaching cold front. The axis of the ridge across central Florida will provide a northwest-north wind flow. The latest guidance is showing a dry cold front reaching northern sections a little after sunset and then shift into south Florida before sunrise Sunday. A high pressure ridge axis has settled across the waters, which should keep the flow out of the northwest from about Canaveral northward. A cold front will surge through the waters during the late evening in the north and a little after midnight in the south.
Continued cool again Sunday /though slightly warmer/ as high pressure begins to shift to the east.
At 2 am, a cold front with a band of showers was moving onto the Cumberland Plateau. Early morning temperatures will be in the lower 40s. Today will be mostly sunny but much cooler. Sunday night looks very cold as the high pressure center moves over Mid TN. Lows will fall to the lower to mid 20s, but some of the usual colder valleys east of I-65 could dip into the teens.
A band of light snow is currently moving ewd across srn WI via the upper trough passage and mid level frontogenesis. Windy conditions will continue as strong low pressure moves away across Canada. For tonight the pressure gradient will continue to weaken as a ridge of high pressure moves to MN and IA. The nwly winds will probably not decouple but low temps in the lower 20s can be expected.
In terms of rainfall, Central Alabama has once again gotten the short end of the stick with a cold frontal passage.
650 AM EST Sat Nov 19 2016 A strong, dry cold front will cross the area this afternoon and evening.
An impressive low pressure area was centered about 400 miles offshore of Oregon. This low had a central pressure around 982 mb and was fully mature and expected to gradually weaken as it approaches Vancouver Island, Canada this weekend. Based mostly on satellite, it looks like the cold front associated with this low was moving into western Siskiyou County and Josephine County at 230 am. The most likely locations for the lower conditions will be for the inland west side, the mountains as well as near Mt. Gales are likely again this afternoon through tonight as another low pressure system moves inside of 130W and brings another front towards the coast.
313 AM MST Sat Nov 19 2016 High pressure over the region will continue warmer than normal temperatures this weekend with highs reaching into the upper 70s to lower 80s. A fast moving wet weather system will then bring unsettled and cooler conditions to the region beginning Sunday night.
Winds will diminish this morning as high pressure moves into the region. Today Through Sunday Night It should be a chilly couple of days, as high pressure settles into the region. Yes, I know most of our counties have seen freezing temperatures already. On Sunday and Sunday night, the high will move eastward, with winds coming back around to the south, and temperatures moderating.
605 AM EST Sat Nov 19 2016 Mild weather today will be brought to an abrupt halt by a late day cold front. A chilly weekend will follow including some freezing temperatures at night.
These winds will subside going into the afternoon as northwesterly high pressure descends into the region and weakens this post-frontal pressure gradient. High pressure moving over the region going into early Sunday will produce light northerly winds. High pressure building in from the northwest through the day will weaken the offshore pressure gradient enough to lower winds to below Gale criteria. Under sunny skies, expect high temperatures today mostly in the lower 60s along with decreasing winds under a relaxing gradient. Under clear skies and light winds overnight, we are looking at low temperatures to possibly fall to near freezing up north (in/around the Houston/Trinity counties area).
Skies are clear and winds are light and variable in the wake of a cold front. These conditions are allowing temperatures to plummet to the freezing point or below across much of the CWA.
716 AM EST Sat Nov 19 2016 High pressure will slide east today as a broad area of low pressure approaches from the west. Low pressure will move into New England tonight and will intensify over southern Quebec on Sunday.
Chilly start in the some of the low lying valleys and areas impacted by existing thick snow cover. An upper ridge will be over the area today through Sunday. Pieces of energy will move through the ridge with increasing moisture over the western zones toward the end of the period, as the ridge shifts E, and SW flow overtakes the area. With less cloud cover and a slightly warmer airmass, temperatures should reach the upper 40s to mid 50s.
VFR conditions will prevail next 24 hours under an upper ridge, w/a few high cdouds. Skies are clear and winds are light and variable in the wake of a cold front. These conditions are allowing temperatures to plummet to the freezing point or below across much of the CWA.
642 AM EST Sat Nov 19 2016 High pressure is weakening ahead of a cold front that is forecast to move into the area tonight.
413 AM MST Sat Nov 19 2016 High pressure will be building over the Central Rockies today with an increase in high clouds expected over the next 36 hours. The high clouds will help hold temps up tonight promising a warmer start to Sunday. Pattern shifts a bit on Sunday as the ridge slides east and opens the door for increase moisture from the southwest.
1046 AM EST Sat Nov 19 2016 The cold front has moved east of the area, with the upper trough axis across central KY and Middle TN still to pass through. Rain has ended in most spots with fropa, and clouds will gradually clear out with the midlevel trough passage this afternoon. For the update, will remove the low pops for the afternoon, and make only slight tweaks to temps/dewpt/sky grids. Winds will be kept in the marginal wind advisory range, and will keep the advisory going for the higher elevations as some sites have had gusts over 30 mph, and forecast soundings support these gusts continuing through the day.
1041 AM EST Sat Nov 19 2016 High pressure will slide east today as a broad area of low pressure approaches from the west. Low pressure will move into New England tonight and will intensify over southern Quebec on Sunday.
Expect Warmer weather this weekend, with increasing clouds on Sunday.
405 AM CST Sat Nov 19 2016 In terms of rainfall, Central Alabama has once again gotten the short end of the stick with a cold frontal passage.
510 AM CST Sat Nov 19 2016 Water vapor imagery this morning shows the departing upper trough making its way across the upper Great Lakes region. Further west, an upper ridge is building over the inter mountain west, transitioning mean flow to the northwest in the central plains. Skies are sunny today while the CWA remains cool as the ridge axis drifts overhead. Light winds veer to the south tonight as the high pressure shifts eastward. Wind chill readings are similar to this morning, if not a bit cooler in the upper teens.
Weak high pressure noted over northeast FL ahead of an approaching cold front. cold front will move through area waters this aftn and will accompany wind shift from westerly to northwesterly.
The upper trough over the Pecos Valley will gradually weaken and edge to the west in the next 24 hours. This activity was associated with a mid/upper level low that has been lingering in the region (to our south) the past few days. The 500 mb low is progged to open to an inverted trough and translate slowly westward through Far West Texas over the next 24 hours as an upper high amplifies over the Four Corners. Rain chances will decrease this evening as the lower atmosphere stabilizes and the weakening upper level disturbance shifts further off to the southwest. However, additional convection from eastern Colorado into central Oklahoma (associated with a backdooring cold front and perturbed northwest flow aloft) could edge toward our northeastern zones late tonight.
138 PM 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. The clouds along and behind this line kept the temperatures a bit cooler than guidance but clearing behind the clouds in central areas should help rebound mid to late afternoon temperatures. Key point is most of the day the low-level temperature guidance is near and slightly above normal.
High pressure has begun to build over the region today. Heading into the overnight, a weak southeasterly low level jet looks to develop across southeast Montana with instability and surface dewpoints increasing as a theta-e ridge noses into the area.
An area of drier air in the mid levels and slightly warmer temperatures aloft will result in less afternoon instability, and likely less thunderstorm coverage.
157 PM CDT MON JUN 27 2016 Heavy rain continues across parts of the area this afternoon as a slow moving upper low shifts west of the Pecos River. PWATs near and east of the low are about 1. The low weakens and moves into northern Mexico tomorrow as an upper ridge attempts to build in from the northwest. The center of the ridge moves southeast toward South Texas this weekend and may allow for some convection across the mountains. Guidance may be a little high due to all the rain over the past few days so will stay on the low side keeping highs generally below 100 for much of the area.
A few late day thunderstorms possible mid-week over the higher Coastal Range and near the Sierra crest south of Tahoe. Interior NorCal sandwiched between upper ridging over the Intermountain West and upper troughing in the EPAC.
Then the rest of the day should be dry/quiet due to stable air mass in place after tonights convection and 700 mb ridging on top of that. 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.
A second front which is has a bit stronger push of slightly drier and cooler air behind it moves across the area on Tuesday.
Skies will turn mostly sunny tomorrow morning as high pressure builds into the area. Even with the sun, temps will be cooler than they have been in a while behind the departing trough.
401 PM EDT MON JUN 27 2016 High pressure will build over the mid section of the country as a cold front moves from the Ohio Valley to the east coast. An upper level trough of low pressure will pass east through the Great Lakes region Tuesday and Tuesday night.
511 PM 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. The clouds along and behind this line kept the temperatures a bit cooler than guidance but clearing behind the clouds in central areas should help rebound mid to late afternoon temperatures. Key point is most of the day the low-level temperature guidance is near and slightly above normal.
With the upper ridge to our west and northerly flow aloft over Central Alabama, we will likely see all of the current activity begin to push southward over the next few hours.
The center of the high pressure will migrate over far northwest New Mexico by Tuesday.
206 PM EDT MON JUN 27 2016 Aviation A cold front will track southward through the region today and tonight. A cooler airmass will then filter in from central Canada. As for rainfall the cold frontal passage is expected to be dry for most locations. The low level thermal trough arrives for Tuesday evening.
627 PM EDT MON JUN 27 2016 A cold front will move through the forecast area tonight. A large area of high pressure will build over the region through the middle part of the week.
With the 500mb ridge persisting over the Four Corners/Inter-mountain West, the 850-500mb thicknesses begin to diverge over the Southern Plains, which indicates the complex that makes Oklahoma may already be decaying as it approaches by daybreak.
332 PM MDT MON JUN 27 2016 Elongated ridge will dominate these periods, centered near the Four Corners. Initially this moisture looks to be in the mid- upper levels so the lowest elevations will still have dewpoints in the 30s with little rain expected to reach the ground. Meanwhile an inverted trough over southern California will slowly work northeastward around the western edge of the ridge into the western Great Basin.
These storms were located along a cold front that pushed southward out of Kentucky during the mid-to-late morning hours.
Slightly cooler temperatures and considerable cloud cover can be expected tonight and Tuesday.
A broad upper level high, centered over the Four Corners region, will remain in place through Tuesday, while a couple of disturbances aloft move south across the Red River and into Texas, on the eastern periphery of this high. Trailing portion of a weak cold front will move south across parts of west central Texas on Tuesday. We are carrying 20-40 PoPs with the higher rain chance across parts of the Big Country and Heartland. Little change with temperatures is expected with overnight lows 70-73 degrees, and highs on Tuesday mostly in the lower 90s.
However, areal coverage should increase to some degree later this afternoon into the evening with lift along the boundary and assistance from a weak short wave currently moving out of the Lower Ohio Valley toward Middle Tennessee.
A secondary cold front will then drop into northern MO and central IL this afternoon eventually bringing cooler and drier air. Glass The cold front will continue to move south across the remainder of the CWA tonight in response to an upper trof digging into the Great Lakes and Ohio Valley. High pressure will then continue to build southward into the Mid MS Valley Tuesday and Tuesday night.
Lows tonight will fall into the low to mid 70s inland to upper 70s along the coast. /13 A frontolysising cold front is still expected to push southward to just off the coast Tuesday night.
At 2 PM, the low clouds were still present as far inland as Scottsburg in Douglas County and Powers in Coos County.
High pressure is centered to our northwest, with upper lows over Baja CA and just southeast of NM.
134 PM EDT MON JUN 27 2016 A cold front will be nearing northwest Ohio this evening and will cross the area tonight.
236 PM EDT MON JUN 27 2016 Latest surface analysis and regional radars all show a frontal trough sagging into west and north TN with scattered to widespread showers and thunderstorms developing along and well south of the frontal trough across central TN and into North AL. expect the approaching trough and associated frontal boundary to the north to sag toward north GA this evening. H5 trough over the eastern U.
In addition, stronger forcing and associated activity along a prefrontal trough axis will continue to push south and enhance activity east of I-65 this afternoon.
A cold front was dropping south over the area early this morning with winds shifting southwest to northwest during passage. The primary weather feature through tuesday centers on a mid level short wave trough with a reinforcing surface cool front or trough dropping south over the area today through early Tuesday morning. Ground Truth observations to the north with this trough were reporting isolated to scattered showers. This trough begins to depart to the southeast late tonight as high pressure builds into the region from the west. High pressure to settle into the region Tuesday with cooler and less humid conditions.
A weak upper trough was moving through the area late this afternoon.
235 PM EDT MON JUN 27 2016 A cold front will swing through tonight bringing much cooler air in for Tuesday. with highs on Tuesday only reaching the low to mid 70s. Secondary sfc cold front now just entering the southern Great Lakes will push through the local area late this afternoon and early evening. Tonight into early Tuesday with feature the main surge of cooler air as trailing mid-level trough axis from parent wave lifting into Quebec swings through the Great Lakes region. Dry otherwise with high temps on Tuesday significantly cooler in the low-mid 70s.
137 PM EDT MON JUN 27 2016 Latest surface analysis show a frontal trough sagging along the KY and TN border with an upper disturbance firing convection along the trough axis. but the approaching trough and frontal boundary will just help keep convection going well into the evening and possibly overnight for at least parts of north GA. warranting the higher pops there. /Issued 730 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.
240 PM CDT MON JUN 27 2016 Per latest radar trends and HRRR, any lingering showers will move south of the PAH forecast area by 22Z as the cold front moves on through the area.
/Today/ One more day of heat/above normal temperatures across Iowa, and then cooler air will be arriving heading into tomorrow. Water vapor imagery easily picking up on deep upper low spinning near the southern tip of the Hudson Bay. A very weak "cold front" associated with this low is swinging all the way through the Great Lakes region, into Iowa and Nebraska.