Aikyam-Lab/Synoptic-Bench huggingface dataset:
317 PM EDT Mon Oct 16 2017 High pressure will dominate the weather this week with a warming trend and dry conditions.
Winds expected to increase on Tuesday ahead of a cold front, along with warming temperatures and lowering RH. Strongest winds expected over the higher terrain in the northwest zones. An upper level disturbance tracking well north of the area Tuesday night will track close as a surface dry cold front passes through the area.
South flow prevails with the h85 thermal ridge across the forecast area for Tuesday.
1131 AM MDT Mon Oct 16 2017 A ridge will strengthen over the western U. Models remain fairly consistent through the late week period as a trough moves onto the Left Coast.
/issued 308 AM CDT Mon Oct 16 2017/ 24 hours ago, winds were howling, dust was blowing and temperatures were quickly dropping behind a fast moving cold front. Beginning today, we'll find ourselves on the eastern edge of a ridge with northwesterly flow aloft.
249 PM CDT Mon Oct 16 2017 High pressure brought clear skies and seasonable temps this afternoon into the lower to middle 60s. Forecast lows are in the lower to middle 40s.
1219 PM CDT Mon Oct 16 2017 High pressure centered over northern Texas will move northeast across the Mississippi Valley into the Mid Atlantic Region by early Tuesday morning. The high will bring our area tranquil weather and temperatures near seasonal normals in the mid 60s today. Should see temperatures a few degrees warmer in the mid 40s over northern portions of the forecast area tonight as light southerly flow develops northwest of the ridge axis. Temperatures will be cooler in the upper 30s to around 40 under the ridge axis across southeast Missouri.
Winds may shift slightly northeast by Tuesday as high pressure builds into Central Texas. Winds relax this evening as a high pressure system over north Texas pushes to the Ohio Valley region. Today should be pretty outstanding across the region with mostly clear skies and temperatures in the lower to middle 70s.
1221 PM CDT Mon Oct 16 2017 At 3 AM, a short wave trough was moving into Michigan. This will allow temperatures to warm into the mid and upper 50s north of Interstate 94 and into the lower to mid 60s elsewhere. The model dew points looked too high, so lowered them into the lower and mid 30s. For tonight, south and southwest winds of 5 to 10 mph will bring slightly warmer air into the region. As a result, low temperatures on Tuesday morning will be in the mid and upper 30s in central Wisconsin and in the lower and mid 40s elsewhere. In addition like today, the soundings show that there will plenty of dry air to mix down, so lowered the dew points into the lower 40s.
148 PM EDT Mon Oct 16 2017 A large area of high pressure will settle into the Ohio Valley for the upcoming week, with dry conditions expected. However, as the low level flow backs around to more of a westerly direction and we get on the back side of the mid level trough axis, we should see a decreasing cloud trend later this afternoon. Under northwesterly flow and with a cooler airmass in place, expect highs today only in the 55 to 60 degree range. Conditions appear dry, clear, and slightly warmer than Monday -- lower to middle 60s.
High pressure at the surface in firm control across the southern plains today which has resulted in light east to northeast winds along with full sun. High pressure will slowly slide east.
Temperatures Tuesday will be a little warmer than today in a pre-frontal regime, and some locations may push 80 degrees (not unheard of in mid October).
212 PM MDT Mon Oct 16 2017 High pressure remains to the south of the Four Corners this Monday afternoon. With the ridge of high pressure barely moving on Tuesday, a nearly identical forecast is expected.
Significantly cooler air will move south across the area today, helping to bring daytime highs well below seasonal norms, with highs generally in the low to mid 70s, a bit warmer along the coast.
238 PM EDT Mon Oct 16 2017 High pressure will build across the Mid Atlantic tonight and hold through the rest of the week. The cold front has already moved offshore, and skies are clearing across the forecast area. High pressure will be building over the Mid Atlantic though the period.
618 PM EDT Mon Oct 16 2017 Cold front has passed through the forecast area. High pressure will build in behind the cold front along with cooler and drier air for Tuesday through the end of the week. Cold front has pushed through the forecast area, and the colder and drier air is now moving into the cwa on strong northerly winds. Low temperatures tonight will be much cooler with mid 40s to around 50, but slightly warmer along lake shores.
The ridge axis is expected to shift far enough east by Tuesday afternoon to bring slightly stronger south winds to NE OK, where gusts could top 15 kts. Underneath the high. The cold spots tonight look to be over parts of Northwest Arkansas as they remain on the westward side of the high pressure center. some valley locations could see temperatures dip down close to the freezing mark along with patchy areas of frost.
Lower to mid level ridging brings the coldest temperatures thus far this fall tonight and Tuesday night.
Cooler air is still filtering into the region after the cold front moved through yesterday. Otherwise, it's a breezy morning with temperatures in the low to mid 50s. Locations along the plateau will likely remain in the 50s while warmer locations such as Nashville will top out in the mid 60s. High pressure will continue to slide toward the region and the pressure gradient will relax allowing northerly winds to decrease below 6 kts this evening.
Anticipate the lower end of the guidance. More of the same is then expected on Tuesday with temperatures a tad warmer as the axis of the high shifts slightly southeast and heights start to slowly climb. Models at this time are in general agreement in digging a long wave trough over the western US. though differences exist in how the northern and southern streams are handling energy being kicked out ahead of the main trough.
326 PM EDT Mon Oct 16 2017 Frontal boundary sweeping south and east through the state ushering in a much drier and cooler airmass. As this cooler drier air filters into the area temps tonight expected to be mainly in the 40s with some 50s across central GA and some 30s in the the N GA mountains.
With thermal ridging building into the state tonight into Tuesday, temperatures will be a good 10 degrees warmer overnight than this morning.
246 PM EDT Mon Oct 16 2017 Current surface analysis reveals a broad 1032mb high pressure system in the Plains that extends well into the lower Ohio Valley. Temperatures tomorrow afternoon will be a few degrees warmer compared to today, as slightly warmer air advects in from the southwest around 850mb. Looks like the low levels of the atmosphere tomorrow will be capped and drier, so skies should be mostly sunny with only a few passing high clouds during the day. Expect another cool night tomorrow as temperatures drop into the lower 40s under good radiational cooling.
At the surface, a zone of high pressure is sprawled over the central Plains with Iowa on the northern side of this high.
Nice, dry, seasonally cooler airmass will continue to settle across the FA as High pressure strengthens its hold on the lower Ohio river valley. Dew points already in the lower half of the 40s, will continue to plummet into the 30s by tonight. That sets the stage, with clear sky/light wind, for some patchy frost to possibly develop, mainly across the northern half of the FA and other low lying/cooler terrain locations. We inherited a little patchy frost mention, massaged the low temp forecast just a tad, and continue with the overall theme inherited (patchy frost north).
A amplitude ridge will continue to cause fair conditions across the Northern Rockies this afternoon and overnight. A cold front will be swinging through the region Tuesday afternoon and evening allowing some of these strong winds to mix down to the surface producing wind gusts of 30 to 45 mph across western Montana with the higher terrain receiving gusts in excess of 50 mph. Idaho will experience gusty winds in the higher terrain, but the location of the mid level jet is not conducive to strong winds mixing down to the surface. The latest runs of the models have decreased the amount of moisture associated with this cold front. The higher terrain across northwest Montana appears to receive the most significant amount, while the valleys experience downsloping effects.
Areas of freezing fog will linger across eastern portions of the Hi-Line this morning before burning off.
640 AM EST Mon Nov 13 2017 Cloudy and cool weather will affect the region today as high pressure slowly builds in. The center of the high will cross over the region on Tuesday.
High pressure will be over the United States east of the Mississippi for the next few days.
937 AM EST Mon Nov 13 2017 Diffuse cold front has moved south of the area and sfc flow is northerly at 5-10 mph.
An U/L disturbance will push from the Ohio River Valley off the mid Atlantic coast today, with the southern extent of the trough sinking south over the Florida peninsula. An associated cold front will sink slowly south over northern Florida this afternoon. A secondary disturbance will dig down the backside of the trough which will enhance U/L troughing over the forecast area Monday night and Tuesday. A secondary cold front. will push slowly south across west central Florida late Tuesday with slightly drier cooler air advecting over mainly the northern and central forecast area. A closed upper low sits over northern New England with troughing extending south along the western Atlantic through the Bahamas. Farther west, ridging extends from Mexico northward over the central CONUS.
This feature briefly tightened the low level gradients over night and saw a few gusts to 50 mph around the Arlington area as a result. Winds have since diminished and the rest of today should be clear and quite warm as upper ridging continues over the Rockies. Upper trough off the southern BC coast this morning will dampen as it ejects ENE across the northern Rockies Tuesday.
Weak ridging remains anchored over Mexico which has kept much of the cold air well away from the area over the past couple weeks.
Some break in the clouds is expected during the afternoon before even stronger low level theta-e advection kicks in this evening with approach of mid level trough. Best rain chances are expected Tuesday evening in southeast Nebraska and southwest Iowa as cold front acts upon deeper moisture there.
540 AM EST Mon Nov 13 2017 Light rain chances will continue through the morning with crossing low pressure. Dry and cool conditions are then expected under high pressure until the next disturbance crosses by midweek. Surface observations continue to show above freezing temperatures, and this is expected to continue while precip is falling. The high should maintain dry weather through Tuesday night as it slides east.
Subsidence will be building into the area as a ridge develops to our west, gently pushing the axis of the higher RH values to our east.
Dense fog continues over northwest ND along and north of the Highway 2 corridor.
553 AM EST Mon Nov 13 2017 Low pressure exits northeast of the area today. High pressure crosses Tuesday.
Patchy fog and stratus persist in the Lower Columbia Basin. A cold front is moving through the area this morning.
603 AM EST Mon Nov 13 2017 Low pressure tracking off the Mid-Atlantic coast will slide well south of the region today into tonight.
We have decided to go with a Dense Fog Advisory across the area north of a line from Franklin to Washington and south of a line from Rome to Blue Ridge. /Issued 326 AM EST Mon Nov 13 2017/ A weak cold front has been traversing the area overnight and will continue moving southeastward out of the area through this morning.
Further north, the fog has lifted in the highway 20 corridor west of Dubuque. 06Z surface data has high pressure from the Great Lakes into the lower Mississippi Valley. However, given the light winds across the area and the low sun angle for the time of year the possibility does exist that the fog may not completely lift. Tonight, RAP trends indicate the low clouds will slowly move back into the area from the west. Atmospheric profiles are pointing to the potential for drizzle not long after the low clouds move back into the area.
Chattanooga Airport, TN 61 38 59 38 / 10 0 0 0 Knoxville McGhee Tyson Airport, TN 55 36 55 37 / 10 0 0 0 Oak Ridge, TN 55 37 56 37 / 10 0 0 0 Tri Cities Airport, TN 51 32 54 32 / 20 0 0 0.
Therefore the max temp forecast plays the lower end of most of the guidance.
It seems that the increasing 12-18 knot southwest winds will really help burn off clouds across the area this afternoon as a lee trough develops. High temperatures this afternoon will be strongly governed by how quickly the low clouds and patchy fog erode. Periodic cold frontal passages are expected to impact the area during the next 7 days.
Eventually, albeit temporarily, we should see the lower ceilings scatter out but high thin cirrus will be plentiful into the overnight hours. /issued 450 AM CST Mon Nov 13 2017/ Weak backdoor cold front has stalled out near or just north of I-20.
349 AM MST Mon Nov 13 2017 Upper level ridge builds over the Northern Plains on today, allowing high temperatures to climb into the lower 60s for many location on the plains. Weak trof flattens the ridge on Tuesday, with dry cold front moving through western South Dakota.
Speaking of temps, they were increased several degrees across the region today largely based on 925mb temps in comparison to yesterday and the highs that resulted from that. Tuesday is looking like another mild day with fairly similar, or even slightly warmer temps at 925mb.
1055 AM EST Mon Nov 13 2017 Precipitation will taper today as low pressure departs. Dry and cool conditions are then expected under high pressure until the next disturbance crosses by midweek. This may be more of a drizzle eventually, especially along the ridges, and will monitor. The high should maintain dry weather through Tuesday night as it slides east.
938 AM EST Mon Nov 13 2017 Local surface analysis shows an inverted trough of low pressure over south Florida with good convergence band at northern apex of trough. Models gradually weaken this trough while moving it southwestward into the gulf today.
In general I went with the the lower guidance and nudged temps down a degree or so from there. Tonight southerly flow will deepen in the lowest layers of the atmosphere along with moisture thus low clouds will develop/thicken over the state.
Starting in the early afternoon, clouds will begin to clear as a weak dry cold front sweeps across the area. Highs will be mainly in the low 70s.
It is occurring on the northwest fringes of the low clouds. A weak cold front will push through Wed, but the drier air will be short- lived. GFS moves this feature through faster than the ECMWF and thus pushes the cold front through quicker. Whichever model verifies, confidence is high that by Fri night, the front will be through and drier cooler air will be spilling south.
Expect drizzle to clear by the afternoon and skies to clear by Tuesday as surface lee troughing develops across the southern High Plains.
As the morning progresses, am expecting the lower CIGS to shift south of the coast by 18z, with VFR conditions the rest of the forecast. Today, drier air moving over the area will combine with increasing subsidence from a building upper high over the Southern Plains to keep temps around to a bit above seasonal today. Highs generally in the low 70s.
A weak surface front has dissipated north of the CWA, and high pressure aloft will remain in control over the region with low lever moisture still trapped below, leading to mostly cloudy skies through today.
Weak high pressure ridging will be over the forecast area today. Temperatures will be slightly warmer today as lee-side troughing sets up bringing a downslope flow. Pressure gradients tighten along the Upper Yellowstone and Stillwater Valleys this afternoon and evening due to lee-side troughing ahead of a Pacific cold front that will move across the forecast area tonight. Highs for Tuesday will be just a few degrees cooler than today.
936 AM EST Mon Nov 13 2017 Low pressure tracking off the Mid-Atlantic coast will slide well south of the region today into tonight.
620 AM EST Mon Nov 13 2017 The morning surface analysis shows a cold front exiting east, with most sites reporting west to northwest winds this morning. An area of high pressure is building east behind this front and a reasonable pressure gradient is setup across the area. Tonight the high pressure will build east and crest across Ohio. This will mitigate much of the usual ridge/valley splits in temperatures tonight. We will also see improvements in temperatures given clearing skies and some weak return flow around the high. There are two systems (both cold fronts) which will affect the area during the period.
1018 AM EST Mon Nov 13 2017 Drying will occur behind a cold front today.
06Z surface data has high pressure from the Great Lakes into the lower Mississippi Valley. However, given the light winds across the area and the low sun angle for the time of year the possibility does exist that the fog may not completely lift. Tonight, RAP trends indicate the low clouds will slowly move back into the area from the west. Atmospheric profiles are pointing to the potential for drizzle not long after the low clouds move back into the area.
Clearing overnight due to continued high pressure aloft has resulted in a dramatic drop in temperatures and the development of low stratus and/or areas of fog. A few showers will be moving into extreme northwest Montana this morning ahead of a fairly strong cold front. By late this afternoon the cold front is anticipated to swing through the region bringing widespread precipitation to the Northern Rockies. By Tuesday a quickly developing ridge of high pressure will traverse the region, shifting any possibly remaining snow to extreme northwest Montana by Tuesday night.
Latest water vapor imagery showed a quasi-zonal flow overhead with low amplitude broad ridge located from the Southern High Plains to the Upper Midwest. Today, downsloping winds are expected that will combine with decent insolation after status clearing and warmer temps aloft at lower-levels. This setup should be conducive for warmer highs compared to yesterday.
Temps on the plains will be 10 to 15F warmer on the plains and about 5F warmer over the valleys/mts than compared to yesterday.
405 AM CST Mon Nov 13 2017 UA analysis and WV imagery show a trough over the Appalachians, with high pres centered over old Mexico and the Rio Grande Valley. Temperatures this morning are mild, mostly in the lower 60s. 24 A fairly benign weather pattern on tap through much of the workweek as northwesterly flow persists aloft between a low amplitude ridge over old Mexico and a weak trough over the eastern US.
951 AM EST Mon Nov 13 2017 Cloudy and cool weather will affect the region today as high pressure slowly builds in. The center of the high will cross over the region on Tuesday.
535 AM CST Mon Nov 13 2017 A large area of MVFR stratus currently blankets the region, trapped within the low level anticyclone centered in the mid MS Valley. The low level anticyclone will gradually retreat eastward today with southeast-to south flow developing in its wake within the lowest 2kft. Due to the clouds, temperatures have held up overnight and thus will be starting warmer than previously expected. Continued eastward retreat of the low level anticyclone tonight will result in strengthening low level flow, better establishment of the WAA regime, and northeastward moisture transport. Model soundings show moisture deepening and nearly saturated conditions through the lowest 8 kft by 12Z Tuesday within a broad region of weak ascent.
Temperature forecast complicated today by cooler start across southern and eastern areas, which were considerably warmer yesterday.
/issued 405 AM CST Mon Nov 13 2017/ UA analysis and WV imagery show a trough over the Appalachians, with high pres centered over old Mexico and the Rio Grande Valley. Temperatures this morning are mild, mostly in the lower 60s. 24 A fairly benign weather pattern on tap through much of the workweek as northwesterly flow persists aloft between a low amplitude ridge over old Mexico and a weak trough over the eastern US.
Cloud cover Today will keep highs in the lower 50s.
Hickford Light winds, along with high pressure and a persistent subsidence inversion over the area, have once again allowed freezing fog to develop overnight and into this morning. Tonight and Tuesday, the upper ridge will be pushed out of the area by a trough approaching from the west.
Low and mid level warm advection continues Tuesday ahead of a cold front with rain chances increasing through the afternoon.
Also worth mentioning is possible freezing fog with light icing possibly accumulating on elevated objects such as bridges and overpasses.
High temperatures this afternoon will be strongly governed by how quickly the low clouds and patchy fog erode. Periodic cold frontal passages are expected to impact the area during the next 7 days.
352 AM PST Mon Nov 13 2017 Rain has moved onshore this morning as the cyclone travels up toward British Columbia.
As the day progresses, dewpoints will begin to fall slightly as a cold front clears the area and high pressure begins to build in. A slow moving upper trough to the north this week means little change expected in the local weather. Highs will be creeping back up into the mid/upper 70s by later this week as the upper trough to the east moves out into the Atlantic Ocean. Cold front will move through the coastal waters starting late this afternoon through the evening hours. High pressure will settle over the area through the remainder of the work week.
The morning surface analysis shows a cold front exiting east, with most sites reporting west to northwest winds this morning. An area of high pressure is building east behind this front and a reasonable pressure gradient is setup across the area. Tonight the high pressure will build east and crest across Ohio. This will mitigate much of the usual ridge/valley splits in temperatures tonight. We will also see improvements in temperatures given clearing skies and some weak return flow around the high. There are two systems (both cold fronts) which will affect the area during the period.
Ceilings and visibilities will gradually improve around mid morning as the low clouds and fog lift and burn off with diurnal heating. /issued 432 AM CST Mon Nov 13 2017/ SHORT TERM (Now through Tuesday): Mid level ridging will remain in place over northwest Mexico and deep south Texas through the period. Low temperatures tonight will be in the 60s inland to the lower 70s along the coast.
Dew points are also in the low to middle 40s so temperatures are not expected to fall more than another degree or two prior to sunrise. Highs today should range from the low 50s to low 60s under mostly clear skies.
High pressure will gradually build into the area, from the west, tonight and Tuesday, with mainly drier and seasonably chilly weather. This afternoon and tonight, as a N-NW flow develops in the lower levels, and moisture also gets trapped underneath a subsidence inversion, plenty of stratocumulus clouds are expected to linger over most of CNY, with skies becoming partly cloudy over portions of NEPA. During the day Tuesday, as ridging continues to build in surface and aloft, the shallow moist layer in the lower levels should erode, resulting in increases sunshine by/during the afternoon. A large high pressure along the entire East Coast in control this period with a dry and cool airmass.
A deep trough of low pressure over the eastern CONUS will continue to sag southward today, helping to maintain the deep moist east northeast flow. Maximum temperatures this afternoon are forecast from the low to mid 80s, near normal for this time of year.