Aikyam-Lab/Synoptic-Bench huggingface dataset:
Surface analysis early this morning depicts sprawling high pressure over much of the central and eastern lower 48 states while a low pressure center meanders over southern Saskatchewan province. A trailing cold front from this low pressure center extends SSW through eastern MT and over the Northern Rockies. Aloft, a fairly large H% ridge axis is aligned nearly along the Mississippi River with weak H5 lows over northern portions of the Gulf Coast states and another over the TX/OK panhandles. A weak trough axis is just in the lee of the Northern Rockies, in the vicinity of the surface front.
A sfc trof of low pressure will move across nwrn parts of the TX and OK Panhandles Sunday afternoon, with winds becoming north at KDHT and northwest at KGUY by late in the day. A sfc trof of low pressure will move across nwrn parts of the TX and OK Panhandles Sunday afternoon, with winds becoming north at KDHT and WNW at KGUY by late in the day. The upper level low to the west of the area will cross the Panhandles tomorrow while another upper low gets pinched off just off of the west coast. Temps will being a warming trend for the beginning of the work week as ridging builds in. Mid level heights begin to fall midweek as the closed low gets picked up by the main flow as part of a longwave trough.
This airmass will remain overhead overnight as a weak surface trof moves across the forecast area. Winds under the trough axis will probably drop enough for favorable radiational conditions, and with dewpoints in the upper 20s anticipate the James valley will see lows in the low 30s.
Not much to update again this evening with high pressure dominating the region. Adjusted temperatures slightly as some areas are cooler so far when compared to the previous forecast. With the colder temperatures near and below freezing tonight, areas near lakes and rivers may see some fog development during the early morning. High pressure over the region will bring clear skies and light winds.
High pressure will continue to sag southward tonight, allowing for a tighter pressure gradient across the area.
843 PM PST Sat Nov 12 2016 A weak trough in the upper atmosphere has pulled some mid and high- level clouds over the region this evening. These will get squeezed to the south on Sunday as high pressure builds east, off the Pacific.
/Issued 322 AM CST Sun Nov 13 2016/ As we go through the second half of the weekend, latest 13/00Z model and probabilistic guidance shows an upper level low continuing to move northeast across the Panhandles during the day on Sunday. A weak cold front will also move its way through the Panhandles Sunday night which will shifts the winds from southwest to north and northwest as we go into the start of the work week. Northwesterly flow with a developing ridge of high pressure across the southwestern CONUS will keep the region dry with temperatures above average for mid November.
345 AM CST Sun Nov 13 2016 Cold front that moved through the region yesterday is now in the northern Gulf.
730 AM EST Sun Nov 13 2016 High pressure will maintain mainly weather into the mid week. No major changes were needed for the post dawn update as insolation and weak warm advection on the extended flank of a Southeast Canadian trough will support moderating temperature today. Forecast lows are about 5 degrees below average, but a few degrees warmer than this mornings lows at most locations.
140 AM EST Sun Nov 13 2016 A pressure ridge will extend through the Ohio River Valley today, directing cold air into the forecast area. An upper low will move over the area today, producing periods of light rain in many areas.
344 AM EST Sun Nov 13 2016 High pressure will continue across the region for the remainder of the weekend.
544 AM CST Sun Nov 13 2016 A 1028 mb ridge axis stretching from Arkansas along the Ohio River Valley will settle slowly southward today and tonight while a 1000 mb low moves from southern Manitoba eastward across southern Canada. clear skies can be expected until evening as high pressure dominates the weather pattern. high cloud cover will start to develop ahead of a weak dry cold front approaching central IL from the northwest. Moisture return should be too weak for any precipitation ahead of the front due to the high pressure lingering just south of the Ohio River. Highs today expected to reach the upper 50s as SSW flow begins to advect warmer air back into the area. the colder temperatures associated with the lighter winds nearest the high pressure ridge.
Weak low pressure was off the NE FL coast this morning with a trailing frontal boundary across east central FL. Overall skies will become partly cloudy with highs around 80 coast to the lower 80s for the interior. As low pressure shifts northeast along the SC/NC coast the cool front will swing back south toward our nrn counties.
/Issued 220 PM EST Sat Nov 12 2016/ High pressure continues to bridge north of the area and build on the lee side of the Appalachians allowing for the development of a wedge through the Piedmont of the Carolinas and in to east central GA. wave of low pressure will strengthen off the Florida and Georgia coast tightening the gradient and increasing low level moisture for SE portions. Should see isentropic upglide at mainly the low levels pick up through the overnight period and into Sun morning with the development of -RA. it may become quite prevalent given setup in place and have gone closer to the high pop NAMDNG than the numerical guidance. clouds moving in tonight should keep temps elevated enough that most all areas will remain above freezing.
135 AM EST Sun Nov 13 2016 High pressure will bring fair weather to the region to start off the new week, with temperatures warming into the 50s. High pressure nosing into the northeastern U.
/issued 339 AM CST Sun Nov 13 2016/ (Today and Tonight) Upper low has moved from the northern Panhandle into Oklahoma early this morning with clear skies over most of the CWA. Today will be warmer with more seasonal temperatures around the 70 degree mark. Morning low temperatures tomorrow will also be warmer with lower 50s over most of the forecast area.
304 AM EST Sun Nov 13 2016 High pressure is currently poised from the Arklatex region to the Ohio Valley. Aloft, an upper level low is cutting off near the Tennessee Valley, with another weaker cutoff low spiraling near the Texas/Oklahoma border. In between these two features, resides a ridge, currently centered across the Midwest. Some valleys are already in the lower 20s, with another 4 hours or so of cooling to take place, yielding some upper teens in at least a few spots by dawn. Despite the cold start, highs will make it back into the lower 60s for most locations today.
On the northeastern periphery of this ridge. though could see an increase in high-level cloudiness in the form of cirrus from the southwest late this afternoon as a mid/upper level low drifts out of the south-central Plains toward southwest Missouri. still expecting a nice rebound in temperatures from the subfreezing conditions early this morning. Lows tonight will range from near 30 degrees across this area to the low 40s from portions of central Missouri northeastward into west-central Illinois where more prevalent cloud cover is expected overnight tonight in addition to the slighlty higher sfc flow.
302 AM CST Sun Nov 13 2016 High pressure extending west from the lower Ohio Valley continues to influence our region this morning. with nothing but clear skies seen over the Lower Missouri Valley. expect warmer temps than yesterday. Nice and warm day on tap for tomorrow despite the passage of a weak cold front during the late morning and afternoon hours. Highs tomorrow should be a few degrees warmer than today.
1241 AM EST Sun Nov 13 2016 High pressure with well below freezing temperatures tonight.
/issued 346 PM CST Sat Nov 12 2016/ Upper level low has continued weakening though current IR SAT shows the center has not progressed as far eastward as last couple model runs have suggested. Overnight lows tonight will be a little more mild with increased dewpoints and ridging aloft filling in behind the exiting low. Height rises and downsloping of westerly component winds will also help lift temps up into the upper 60s on the Caprock and into the low 70s across the Rolling Plains.
402 AM EST Sun Nov 13 2016 High pressure will bring fair weather to the region to start off the new week, with temperatures warming into the 50s. High pressure nosing into the northeastern U.
Afternoon highs dip a bit with mild cooling indicated at the 7H level in the wake of the trough.
1139 PM CST Sat Nov 12 2016 VFR through Sunday night with scattered to broken high clouds associated with a passing upper level low and scattered to broken clouds around 5000 ft overnight/Sunday morning. An upper low--actually the remnants of the system that plagued our region with showers through the middle of last week--is currently situated across the Texas Panhandle this evening and is inching slowly towards the northeast. No rain is anticipated as ascent is weak and sub-850 mb air remains dry, although we might see some virga/sprinkles developing across our central and southern counties towards Sunday morning as the upper low heads east.
514 AM CST Sun Nov 13 2016 High pressure across the region to maintain VFR conditions through the terminal forecast period.
1148 PM EST Sat Nov 12 2016 VFR conditions will continue this forecast period as dry southwest flow feeds into area off of sprawling high pressure to the south. This southwest flow will become somewhat gusty again on Sunday as a moderate pressure gradient between this high and low pressure in the vicinity of Hudson Bay persists. A centroid of the upper level ridge will roll directly over southeastern Michigan late tonight and early Sunday. A shearing of the amplitude to the upper level blocking ridge will continue Sunday.
WE remain on the fringe of cirrus with SKC N and W and keeping station S and E as the upper trough is right over the ArkLaMiss. This due in part to an upper level trough spinning across the Ok/Tx Pnhdl. Also adjusted sky grids to match current and expected fcst trends given the high clouds present.
450 AM EST Sun Nov 13 2016 VFR conditions will continue through the TAF period as dry southwest flow continues between high pressure over the Ohio Valley and a trough of low pressure moving into Ontario. Gusts should subside during the early evening as high pressure sinks southward and allows the pressure gradient to start relaxing, and as we the lose diurnal heating component.
631 AM EST Sun Nov 13 2016 A large area of high pressure over the Ohio Valley will remain in place through today.
329 AM EST Sun Nov 13 2016 High pressure weakens today.
Looks like another day of VFR conditions with plenty of cirrus aloft as dry air is progged to dominate the lower/mid levels. The combo of high pressure ridging in from the Ohio Valley and a weak erly wave crossing the n-cntl Gulf Coast will maintain light nrly winds through the period. /issued 345 AM CST Sun Nov 13 2016/ Cold front that moved through the region yesterday is now in the northern Gulf.
725 AM EST Sun Nov 13 2016 High pressure will continue across the region for the remainder of the weekend.
417 AM EST Sun Nov 13 2016 High pressure and a dry airmass will remain in place across the region through the first part of the week as temperatures remain slightly above normal.
Tonight Through Sunday A weak pacific low pressure trough will move across southern Alberta and southern Saskatchewan and Montana brushing northern Wyoming. A weak cold front will move south into the north and east bringing some cooling. Sunday Night Through Saturday West to southwest winds are expected to continue to increase along and near the east slopes of the mountains east of the Continental Divide and across the south into southern Fremont and Natrona counties Sunday morning continuing into the evening with a cold front moving into the north and east turning the wind to the northeast and cooling temperatures.
1246 AM EST Sun Nov 13 2016 High pressure will continue across the region for the remainder of the weekend.
557 AM EST Sun Nov 13 2016 High pressure weakens today.
1008 PM MST Sat Nov 12 2016 Mean ridge of high pressure will remain in place over the region bringing mild and dry weather. Dry air in place with light winds and mostly clear skies will support strong radiational cooling Sunday night, with cooler readings forecast.
With the clouds and NE flow in place, cooler temperatures will wedge into the NE corner of the CWA, with highs only reaching the lower 60s from Albany to Fitzgerald.
A weak system will cross the area tonight with high pressure returning for the first part of the week.
628 AM CST Sun Nov 13 2016 Post frontal west winds bringing good mixing causing unusually mild temperatures across the northwest with Williston, Minot and vicinity in the low to mid 50s this morning. The short term begins with a flattened h500 ridge over the central CONUS with progressive flow moving onshore across the Pacific northwest. A modified Pacific cold front will move through the state today as a dry frontal passage. This afternoon and tonight an area of strato-cu will move south with the cooler air behind the front and linger across the north and east. There should be enough wind to mix the air and cloud cover to hold temperatures up in the mid 30s most areas but lowed mins to lower 30s south and southwest where past few nights it has gotten cooler than expected.
311 AM CST Sun Nov 13 2016 Strong radiational cooling has allowed temperatures to fall below the freezing mark across much of the area north of I-40 early this morning. The synoptic pattern resembles a mini omega block over the central CONUS, with a mid-level anticyclone over MO/IA flanked by a pair of upper-level lows. Given the amount of subsidence between these cyclones, we should see minimal cloud cover today, allowing temperatures to warm quickly after sunrise. High temperatures will top out in the low/mid 60s across much of the Mid-South with winds remaining light and variable. We are expecting temperatures a few degrees cooler than this morning's lows and we're now beyond the date of the normal first freeze.
Temps are currently in the 30s for most areas with a few freezing temps along the Plateau and our northwest areas. A rather small scale weakening upper ridge will push our way late this afternoon.
/issued 342 PM CST Sat Nov 12 2016/ (Tonight and Sunday) Mid clouds have been tough to clear from the south and southwest portions of West Central Texas this afternoon, keeping Ozona a little cooler than locations a little farther north and east.
307 AM EST Sun Nov 13 2016 Canadian high pressure will move just to our south today.
340 AM EST Sun Nov 13 2016 A large area of high pressure over the Ohio Valley will remain in place through today.
The wind shift will in turn give us slightly warmer low temperatures than last night but they will still be in the mid 30s.
And although the lower atmosphere will remain dry, this cloud insulation should keep min temperatures tonight several degrees higher than last night at most locations. A slightly cooler airmass Sunday in a NW flow aloft should hold max temperatures a tad lower than today, even with maximum solar input. This cooler airmass over the area could be sufficient to result in near freezing temperatures in locally cooler spots of the Grand Valley in western CO and some lower elevation spots in SE Utah late Sunday night where near freezing temperatures have already occurred this fall.
/Issued 933 PM CST Sat Nov 12 2016/ High pressure settling over the region this evening will result in another night of light winds and clear skies.
322 AM CST Sun Nov 13 2016 As we go through the second half of the weekend, latest 13/00Z model and probabilistic guidance shows an upper level low continuing to move northeast across the Panhandles during the day on Sunday. A weak cold front will also move its way through the Panhandles Sunday night which will shifts the winds from southwest to north and northwest as we go into the start of the work week. Northwesterly flow with a developing ridge of high pressure across the southwestern CONUS will keep the region dry with temperatures above average for mid November.
600 AM EST Sun Nov 13 2016 High pressure will pass south of the region through tonight.
247 AM EST Sun Nov 13 2016 High pressure is currently poised from the Arklatex region to the Ohio Valley. Aloft, an upper level low is cutting off near the Tennessee Valley, with another weaker cutoff low spiraling near the Texas/Oklahoma border. In between these two features, resides a ridge, currently centered across the Midwest. Some valleys are already in the lower 20s, with another 4 hours or so of cooling to take place, yielding some upper teens in at least a few spots by dawn. Despite the cold start, highs will make it back into the lower 60s for most locations today.
530 AM CST Sun Nov 13 2016 High pressure extending west from the lower Ohio Valley continues to influence our region this morning. with nothing but clear skies seen over the Lower Missouri Valley. expect warmer temps than yesterday. Nice and warm day on tap for tomorrow despite the passage of a weak cold front during the late morning and afternoon hours. Highs tomorrow should be a few degrees warmer than today.
339 AM CST Sun Nov 13 2016 (Today and Tonight) Upper low has moved from the northern Panhandle into Oklahoma early this morning with clear skies over most of the CWA. Today will be warmer with more seasonal temperatures around the 70 degree mark. Morning low temperatures tomorrow will also be warmer with lower 50s over most of the forecast area.
349 AM CST Sun Nov 13 2016 The short term begins with a flattened h500 ridge over the central CONUS with progressive flow moving onshore across the Pacific northwest. A modified Pacific cold front will move through the state today as a dry frontal passage. This afternoon and tonight an area of strato-cu will move south with the cooler air behind the front and linger across the north and east. There should be enough wind to mix the air and cloud cover to hold temperatures up in the mid 30s most areas but lowed mins to lower 30s south and southwest where past few nights it has gotten cooler than expected.
248 AM EST Sun Nov 13 2016 High pressure will pass south of the region through tonight.
242 AM EST Sun Nov 13 2016 High pressure weakens today.
12Z MOS guidance showed lows mainly in the lower 30s across the area tonight, which agreed with the previous forecast, so have gone with lows in the lower 30s, except a little warmer near Lake Michigan. Warm advection aloft and southwest surface winds ahead of an approaching trough/cold front will bring warmer temperatures to the area on Sunday.
708 PM EST Sun Jan 8 2017 Mainly dry and warmer conditions are expected into Monday with lows in the teens overnight and highs in the upper 20s to near 30 degrees Monday.
Tomorrow, the high will begin to interact with low pressure in the Central Plains, causing winds to become breezy. Low level surface inversion sets up maintaining or further thickening the cloud cover tonight before the more established southeast flow partially mixes through the low level moisture for a mostly-partly cloudy Monday.
615 PM EST Sun Jan 8 2017 Arctic high pressure crosses this evening/tonight.
Some fog and drizzle areas may develop as the Gulf moisture lifts a warm front back our way. However with single digit dew points milling around we will again see a chilly night below freezing areawide.
922 PM EST Sun Jan 8 2017 High pressure builds in through Monday.
Chattanooga Airport, TN 18 41 30 51 / 0 0 10 20 Knoxville McGhee Tyson Airport, TN 12 37 27 49 / 0 0 10 20 Oak Ridge, TN 14 39 27 49 / 0 0 10 20 Tri Cities Airport, TN 6 35 20 46 / 0 0 10 20.
809 PM EST Sun Jan 8 2017 Building high pressure will maintain mainly dry but cold weather through Monday.
High pressure departing to the east has allowed a light southeast to south flow to develop across the region today. /issued 415 PM CST Sun Jan 8 2017/ High pressure centered over the central portion of the US will migrate to the east over the next 24 hours. This will be the last night for freezing temps around the region.
Went ahead and upgraded the High Wind Watch to a Warning and added the Cheyenne/Coleman zones to the Warning as well.
High pressure over the area will shift eastward tonight. Highs on Monday should finally make it above freezing, topping out in the mid to upper 30s. For Monday night a low pressure system will move from the Plains into the upper Midwest.
Will see a secondary surge of isentropic lift across the north this evening with pressure deficits dropping in the low levels and should see some scattered flurries/very light snow in the evening. Temperatures are forecast to continue the climb out of the deep freeze with highs above freezing across the southern half of the forecast area by afternoon, albeit by not much.
740 PM EST Sun Jan 8 2017 Arctic high pressure settles over the Mid Atlantic tonight into Monday.
808 PM EST Sun Jan 8 2017 An upper level trough will slide east allowing a ridge of high pressure to drift east across the region tonight and early Monday.
To the north of Interstate 70, Meeker and Craig have warmed into the low to mid- 30s - quite the dramatic change from morning lows in the -20s only 36 hours ago. Precipitation currently affecting the region should relax in intensity as the evening progresses as the mid-level warm front pushes north into central Wyoming. In these two valley locations, short term model soundings never get above freezing aloft and precipitation will stay all snow through Monday night as of this forecast package. After a relative minimum in precipitation early Monday morning, strengthening southwest flow aloft and an approaching cold front will bring PoP chances back up for the daytime hours. Rain will be the predominate precipitation type in all valley locations except the Gunnison and Uinta basins on Monday afternoon, before the cold front passes through during the evening hours.
Temperatures this afternoon increased to above freezing across most of the area with satellite showing snow melting across the forecast area. Tonight warm air advection along with some increase in clouds will keep temperatures warmer than previous nights with lows in the teens to lower 20s.
640 PM CST Sun Jan 8 2017 Light snow from the Red River eastward has been hanging on a bit longer than expected, so bumped up POPs for a bit longer this evening but the snow/flurries should end as the trough pushes further east later this evening. it looks like temperatures will dip enough tonight for another wind chill advisory across mainly the north as high pressure pushes into the area.
As high pressure moves off to the east tonight into Monday, deep southerly flow on the back side of the high will begin to advect moisture back across the area. In the meantime a weather system will begin to shape over the high plains.
At 3 PM CST around the Mid-South temperatures were in the upper 20s to lower 30s with mid to high level clouds present over the region, helping to keep temperatures mostly below freezing. Latest surface analysis places the region under a strong 1043 hPa high pressure center, which is affecting much of the eastern CONUS today. Meanwhile, latest H5 analysis places a longwave trough axis along the eastern seaboard, with an upper ridge of high pressure roughly located along the Rocky Mountains, with resultant northwest flow aloft over the local area. Overnight lows tonight will warm into the low to mid 20s, with highs on Monday in the 40s. Winds will increase by late in the day on Monday as a low deepens across the Plains and the local area becomes entrenched beneath a tightening pressure gradient as a cold front approaches.