Aikyam-Lab/Synoptic-Bench huggingface dataset:
A Winter Weather Advisory is in effect for the ridges due to moderate, accumulating snowfall. With cold air aloft and an increase to the wind, windy conditions (gusts of 20-25mph low elevations/30-35mph in the ridges) should linger as well. Snow showers will gradually taper off across the region as the upper-level trough advances into New England and dry advection commences. Forecast soundings suggest enough residual, low-level moisture in the ridges to maintain mention of snow, but lack of moisture within the dendritic growth zone should prohibit significant, additional accumulation.
A cold front, forced down the Plains by a northern stream wave, will push into the region in the wake of tonight's system.
Forecast was updated for a chance of freezing rain mainly along the Utah border this evening after midnight until mainly 3 am. Models are showing the light freezing rain to transition to very light snow after 3 am. If so, there would be a better chance of freezing rain. Road temperatures are at or below freezing in these areas currently. We'll see higher level clouds move into the region tonight as a low pressure system moves through Utah. We could be battling the low clouds and fog through the rest of the week.
Temperatures were in the 30s areawide early this morning with a few locations below freezing across east Alabama.
A cold front will move south across the area after midnight, with winds shifting to a northerly direction in its wake. /issued 510 AM CST Thu Dec 5 2019/ (Today and Tonight) Warm and breezy conditions will occur across the area today ahead of a cold front approaching from the north.
Strong winds diminish tonight as a cold front shifts winds to the north around 10 kts. /issued 319 AM CST Thu Dec 5 2019/ An upper trough is over Utah with westerly flow over the CWA. This upper trough will begin to move over the central/southern plains by this evening. The CWA will be under the base of the trough so high winds aloft will mix downward towards the surface. A cold front associated with the upper trough will move into the area tonight resulting in temperatures cooling to near normal for Friday.
319 AM CST Thu Dec 5 2019 An upper trough is over Utah with westerly flow over the CWA. This upper trough will begin to move over the central/southern plains by this evening. The CWA will be under the base of the trough so high winds aloft will mix downward towards the surface. A cold front associated with the upper trough will move into the area tonight resulting in temperatures cooling to near normal for Friday.
Friday will be cooler than Thursday, with highs in the 30s to low 40s expected.
451 AM EST Thu Dec 5 2019 Snow showers should gradually taper off later this morning as high pressure builds in the Ohio River Valley. A cold front will return precipitation chances Friday. Westerly flow will shift to the southwest early Friday morning, and warm air will advance into the region ahead of a cold front. With low- level temperatures near freezing, expected a rain/snow mix with the frontal passage; areas near I-80 may see snow showers due to residing cold air.
/Issued 326 AM EST Thu Dec 5 2019/ High pressure will meander overhead today. The high center will shift offshore on Friday, ahead of an approaching cold front.
The combination of clear skies and calm winds with the high pressure system over the Quad State region is resulting in chilly conditions overnight with much of Southern Illinois below freezing. Lows Thursday night will be warmer with temperatures in the low 40s. Behind this system more northerly flow will bring cooler air.
Upper trough working its way through Utah this morning giving southeast Idaho a light wintry mix of precip. Freezing rain and snow are the likely precip types this morning, but should be changing over to snow by around sunrise. The upper trough will continue moving eastward into Colorado by late morning, leaving some light snowfall lingering in the Southeastern Highlands. In the Snake Plain and southern/eastern valleys, some freezing fog is likely, and should burn off by late morning/early afternoon. The forecast will be dry for tonight through tomorrow night, though some slight chance PoPs will remain in the Island Park area as some light snow and/or freezing drizzle, depending if any seeder- feeder action occurs.
905 AM EST Thu Dec 5 2019 High pressure over the southeast U.
An area of low pressure will move from the Southern Plains to the Mississippi Valley from tonight through Friday. Friday night through Thursday High pressure will slowly build over the area this weekend and at this time dry weather and near to slightly above normal temperatures are forecasted.
510 AM CST Thu Dec 5 2019 (Today and Tonight) Warm and breezy conditions will occur across the area today ahead of a cold front approaching from the north.
Today Through Friday Night An upper low over the Rockies will move east today into the Plains. This upper low will move through Arkansas tonight and Friday morning. As the low moves through the Plains this afternoon and evening, the atmosphere will destabilize and rain chances will increase. Lows tonight will be in the 40s and 50s but cooler Friday night in the 30s and 40s.
Fortunately valley temperatures are all a few degrees above freezing. But we'll have to watch the next few hours for freezing drizzle/rain will be possible if temperatures fall to freezing. The rest of today will be a mix of clouds and sunshine with temperatures 5-10 degrees above normal in the lower 40s. Valley fog tonight and Friday morning is expected to be our next weather impact under a strengthening ridge and stable atmosphere.
Rain should exit the Ozarks by early Friday morning leaving behind north winds and cooler temperatures.
A low pressure system will make its way across the region today. High pressure aloft will follow this storm for the late in the week, with the next storm system impacting the region during the upcoming weekend.
239 AM MST Thu Dec 5 2019 A cold front is moving south across the forecast area early this morning. A wave moving through Central and Southern Montana this morning could bring some light snow/freezing rain to Petroleum County. Meanwhile, there will also be areas of fog and freezing fog in the southwest as low clouds reach ground level. High pressure moves in this afternoon and remains over the area tonight.
358 AM MST Thu Dec 5 2019 Broad upper ridging over the western CONUS is placing the Northern Plains beneath fast northwest flow. At the surface, high pressure is located across the Central Plains with low pressure slowly sliding across North Dakota, dragging a cold front through eastern Montana at the moment.
The upper level pattern is characterized by troughing along the Atlantic Seaboard with broad ridging across the western CONUS. At the surface, high pressure continues to hold strong across the southeastern U. Increasing clouds will limit the amount of cooling and lows tonight will be a bit warmer in the mid 30s to low 40s.
A cold front will move through this evening shifting winds to the NW and then North. Morning water vapor imagery shows the upper level low is traversing south central Utah this morning with the eastern Pacific moisture plume axis shunted south of our area. As the low continues to move towards our area this morning, expect cloud cover to push further south leading to mostly sunny skies for our area by this afternoon however, if clouds do hang around high temperatures and wind speeds will be lower than currently forecasted. A cold front will move across the area late tonight which will spread seasonably cooler air across the region.
The airmass in place over the area will moderate slightly today, with highs a degree or 2 warmer than yesterday. Before the cooler air moves in on with the front associated with this trough, temps should warm quite a bit on Friday.
529 AM EST Thu Dec 5 2019 Snow showers should gradually taper off later this morning as high pressure builds in the Ohio River Valley. A cold front will return precipitation chances Friday. Westerly flow will shift to the southwest early Friday morning, and warm air will advance into the region ahead of a cold front. With low- level temperatures near freezing, expected a rain/snow mix with the frontal passage; areas near I-80 may see snow showers due to residing cold air.
None-the-less, will bring small rain chances north to around the Highway 50 corridor in our west and the Missouri River in our east. We'll cool down for Friday, in the wake of the Thursday night system, with temperatures generally in the lower 40s. Temperatures will warm back up for the weekend as broad upper ridging and southerly flow returns to the area.
902 AM EST Thu Dec 5 2019 Snow showers should gradually taper off later this morning as high pressure builds in the Ohio River Valley. A cold front will return precipitation chances Friday. Westerly flow will shift to the southwest early Friday morning, and warm air will advance into the region ahead of a cold front. With low- level temperatures near freezing, expected a rain/snow mix with the frontal passage; areas near I-80 may see snow showers due to residing cold air.
A cold front will also move south through the area overnight with gusty north winds developing behind the front.
Clouds will increae again this evening as low pressure approaches with a cold front, and rain chances will increase. Today Through Friday Night An upper low over the Rockies will move east today into the Plains. This upper low will move through Arkansas tonight and Friday morning. As the low moves through the Plains this afternoon and evening, the atmosphere will destabilize and rain chances will increase. Lows tonight will be in the 40s and 50s but cooler Friday night in the 30s and 40s.
Temperatures below freezing and a very shallow moisture layer have limited the extent of fog, with the Buffalo Ridge in southwest Minnesota being the location most likely to see continued areas of fog through sunrise. High temperatures will again be mild today ahead of a cold front which moves through later tonight. The parent weather system which brings this cold front through will be very moisture-starved, so no precipitation is expected.
Air mass remains relatively moist and clouds will linger today and patchy freezing fog may develop in the valleys tonight and Friday morning. Closed low circulation has moved into Utah, but wraparound moisture still brings light snow to northeast and east central Nevada early this morning. Moisture gets trapped as high pressure quickly builds over Nevada today.
320 AM CST Thu Dec 5 2019 Early this morning weak ridging continued across the southern and into the central Plains. A mid level low was moving on satellite into Utah at 0830Z, while weak low pressure was developing along the front range. Tonight a cold front will accompany the mid level system and traverse the cwa shifting the winds to a northerly direction.
Concerning the forecast today, cooler weather will continue with highs likely peaking in the mid 70s across the island chain. Through this weekend, a gradual warming trend will commence with mid to upper level ridging firmly in control of the weather across the region.
Chattanooga Airport, TN 60 42 53 41 / 0 10 60 20 Knoxville McGhee Tyson Airport, TN 56 38 52 38 / 0 10 50 20 Oak Ridge, TN 56 38 51 39 / 0 10 50 20 Tri Cities Airport, TN 51 34 50 35 / 0 10 50 20.
Morning water vapor imagery shows the upper level low is traversing south central Utah this morning with the eastern Pacific moisture plume axis shunted south of our area. As the low continues to move towards our area this morning, expect cloud cover to push further south leading to mostly sunny skies for our area by this afternoon however, if clouds do hang around high temperatures and wind speeds will be lower than currently forecasted. A cold front will move across the area late tonight which will spread seasonably cooler air across the region.
407 AM MST Thu Dec 5 2019 Broad upper ridging over the western CONUS is placing the Northern Plains beneath fast northwest flow. At the surface, high pressure is located across the Central Plains with low pressure slowly sliding across North Dakota, dragging a cold front through eastern Montana at the moment.
/issued 244 AM CST Thu Dec 5 2019/ High pressure remains over the Mid-South this morning. The high will shift east today. Abundant cirrus clouds are already streaming into the area ahead of a developing low pressure system located over the Texas Panhandle. A warm front will lift across the area late this afternoon which may allow a few showers to develop across portions of Northeast Arkansas. Winds will turn around to the north on the backside of the low which will keep lingering drizzle across the area during the afternoon hours on Friday.
Early this morning weak ridging continued across the southern and into the central Plains. A mid level low was moving on satellite into Utah at 0830Z, while weak low pressure was developing along the front range. Tonight a cold front will accompany the mid level system and traverse the cwa shifting the winds to a northerly direction.
527 AM CST Thu Dec 5 2019 Weak low pressure is moving across North Dakota early this morning. As high pressure drops in from northwest to southeast, winds will become calm Thursday night across the Missouri River valley. Return flow will set up on Friday with breezy southerly winds drawing up warmer temperatures into central SD again.
MVFR ceilings will develop late tonight behind a cold front, and will persist through Friday morning.
Surface wave is currently over western Oklahoma Panhandle, with cooler airmass to its north and northeast. Surface wave expected to move southeast during the late afternoon and early evening with the cooler air moving south into the Panhandles. Low- and mid-level moisture remains on the low side, but modest amounts of elevated instability could support shower development through midnight.
Slightly warmer temperatures today with high pressure in place at the surface and zonal flow aloft. Expect dry conditions overnight with lows in the low 40s across most of the CWA.
A cold front is currently passing through north central/central South Dakota. Behind it, northwest winds are gusting in the 20-30 mph range (Mobridge recently gusted to 28 mph). Weak low pressure is moving across North Dakota early this morning. As high pressure drops in from northwest to southeast, winds will become calm Thursday night across the Missouri River valley. Return flow will set up on Friday with breezy southerly winds drawing up warmer temperatures into central SD again.
For most locations, temperatures will be a few degrees warmer than yesterday. Surface observations indicate many locations are several degrees warmer than 24 hours ago. The 850 mb temperature on the 12Z KOUN sounding was +12 C (which is a couple degrees warmer than yesterday's 00Z sounding). A cold front will also move south through the area overnight with gusty north winds developing behind the front.
301 PM EST Thu Dec 5 2019 Short Term (Tonight through Friday Night): the only noteworthy feature this afternoon are veils of cirrus racing across the South Florida skies as the area remains under the influence of high pressure centered over the SE CONUS. Temperatures tonight will be a few degrees warmer, with upper 40s to low 50s across most of the region.
A weak upper level trough is expected to swing through the area today. At the surface, we are situated between a low pressure to the north and a low pressure to our southwest which will pass well south of our area tonight. The low to our north will pass through this afternoon, dragging a weak cold front with it. Overnight the upper level trough will move through and will bring precipitation well to our south in Kansas and Oklahoma. NAM shows just small chances of some freezing drizzle this evening, mainly along the KS border. After the front skedaddles out of the area, Friday will be mildly cooler with winds diminishing and becoming more southerly. Over the weekend, the upper level ridge will move overhead and the sun will be dominant with highs in the upper 40s and 50s.
Overnight, a cold front located across the Panhandle will move southward as a fast-moving upper trough whips across the Southern Plains. Temperatures tonight are expected to fall into the low 40s, although they may stay somewhat mild for the first half of the night until the front moves through. Highs tomorrow were lowered toward the NAM MOS guidance, which was on the cooler end. (Friday Night through Thursday) Much cooler Friday Night in the wake of the cold front, with overnight lows dropping down into the low to mid 30s.
Overnight winds will gradually shift to the south as the area of high pressure moves off the Carolina coast.
Flurries to a few snow showers are likely across the northern part of the state on Friday as a weak cold front moves through.
Lift from the wave may combine with moisture ahead of the associated cold front to produce a few scattered showers overnight across portions of southeast Kansas. Cold advection will commence through the night bringing the low temps into the upper 20s to mid 30s across the area by early tomorrow morning. Upper ridging arrives for the weekend which will keep us dry with temps in the mid to upper 50s.
For Friday a warm front will enter western North Dakota in the afternoon. Highs will be much cooler ahead of the front and where deeper snow exists with temperatures topping out in the 20s and lower 30s from the Turtle Mountains through the James River Valley. Very light snow is possible far north central and across the Turtle Mountains with warm air advection ahead of the warm front.
Temperatures generally running in the low 70s at this time, and ranging from 5 to 10 degrees above normal. Weak cold front progged to ease across the forecast area Friday. Temperatures will again manage to jump well above climo values before slightly cooler temperatures overspread the area for the weekend. High pressure returns for the weekend.
1043 AM MST Thu Dec 5 2019 Broad upper ridging over the western CONUS is placing the Northern Plains beneath fast northwest flow. At the surface, high pressure is located across the Central Plains with low pressure slowly sliding across North Dakota, dragging a cold front through eastern Montana at the moment.
High pressure will move to the northeast tonight through Friday. An inverted trough is expected to develop over the coastal waters overnight, which will strengthen during the day Friday. This trough could result in a few showers near the coast, but most of this activity is expected to remain offshore. An area of low pressure will also gather along the central gulf coast Friday afternoon, with its associated warm front extending east toward SE GA.
Gusty winds this afternoon will continue until sunset, then a cold frontal passage overnight will bring a wind shift for all locations by sunrise. /issued 510 AM CST Thu Dec 5 2019/ (Today and Tonight) Warm and breezy conditions will occur across the area today ahead of a cold front approaching from the north.
Mid to high clouds should linger across the area overnight, but will be quick to clear as Canadian high pressure builds in from west to east on Friday. The pattern changes for the new week as a large scale trough dives into the central CONUS.
1017 AM EST Thu Dec 5 2019 High pressure over the forecast area today and tonight will be off the Southeast Coast Friday. There will be increased moisture ahead of an approaching cold front Friday.
247 PM CST Thu Dec 5 2019 Well above normal temperatures and gusty southerly winds are in progress across eastern Oklahoma and western Arkansas, in advance of a strong cold front that will move through the area tonight. Much cooler temperatures will follow the front tomorrow, with afternoon temperatures likely to be around 20 degrees cooler than today's.
Chilly end to the work week; after pleasant temperatures today, a cold front tonight will bring high temperatures, Friday, in the upper 30s and lower 40s.
These are combining with a cold front in northwest Kansas and are all on track to move to the south and southeast for tonight which will provide the chance of some spotty rain showers mainly for areas along and west of highway 83 to the Colorado border.
A cold front will return precipitation chances Friday.
Low pressure system over Utah that brought snow to southeast Idaho is moving into Colorado this afternoon. With a pre- storm environment rich in low level moisture with all the stratus around, that may have been a factor in both the higher amounts and there greater extent. There's an outside chance of some light snow flurries or freezing drizzle across portions of the upper Snake Plain with some mid level moisture drifting through that area.
with broad troughing extending from New England southward through the western Atlantic. , upper ridging extends northward from eastern Texas through the Mississippi River Valley.
Air mass remains relatively moist and clouds will linger today and patchy freezing fog this morning may redevelop in the valleys tonight and Friday morning. Air mass remains relatively moist and clouds will linger today and patchy freezing fog may develop in the valleys tonight and Friday morning. Closed low circulation has moved into Utah, but wraparound moisture still brings light snow to northeast and east central Nevada early this morning. Moisture gets trapped as high pressure quickly builds over Nevada today.
Winds will become northwest to north this evening and overnight and decrease to 10 to 15 mph as a cold front moves through. Strong winds diminish tonight as a cold front shifts winds to the north around 10 kts. /issued 319 AM CST Thu Dec 5 2019/ An upper trough is over Utah with westerly flow over the CWA. This upper trough will begin to move over the central/southern plains by this evening. The CWA will be under the base of the trough so high winds aloft will mix downward towards the surface. A cold front associated with the upper trough will move into the area tonight resulting in temperatures cooling to near normal for Friday.
Also seeing some very light blowing dust indications in the GOES-16 Dust RGB imagery that will hang in the air until a weak cold front arrives overnight.
1237 PM EST Thu Dec 5 2019 High pressure over the forecast area today and tonight will be off the Southeast Coast Friday. There will be increased moisture ahead of an approaching cold front Friday.
A southern stream trough continues to translate through the SW US. At the surface, a cold front continues to push southward through the forecast area while a post-frontal stratus deck intrudes into the region. This post- frontal airmass will have sufficient moisture for mist/fog/freezing fog later tonight into the overnight hours as temperatures fall below freezing.
Rain will then push east of the region by mid Friday morning, leaving a cooler air mass and breezy northerly winds in its wake. Near-seasonal high temperatures in the mid to upper 40s will be felt across most of the area, although portions of far south- central Missouri may touch the low 50s.
1105 AM CST Thu Dec 5 2019 A cold front is currently passing through north central/central South Dakota. Behind it, northwest winds are gusting in the 20-30 mph range (Mobridge recently gusted to 28 mph). Weak low pressure is moving across North Dakota early this morning. As high pressure drops in from northwest to southeast, winds will become calm Thursday night across the Missouri River valley. Return flow will set up on Friday with breezy southerly winds drawing up warmer temperatures into central SD again.
225 PM CST Thu Dec 5 2019 West winds are picking up across the area this afternoon ahead of a cold front that will move through the area tonight. The High Wind Warning in the Guadalupe Mountains will remain in effect however for the next several hours since winds in the higher elevations are quite a bit stronger. Temperatures behind the front will be cooler, but still above normal and combined with dry conditions will allow for a very pleasant weekend.
Locally we will see increasing midlevel clouds and strengthening northerly winds behind a surface cold front that has moved through the area. Friday will be much colder than today thanks to the cold frontal passage.