Aikyam-Lab/Synoptic-Bench huggingface dataset:
9 fog product shows some lingering fog/low stratus across the lower valleys of Albany and Carbon county with a slow clearing trend. Current surface dew point depressions and high pressure aloft/subsidence over the area favor some fog redevelopment tonight. Do not anticipate this fog to form across the high plains due to higher dewpoint depressions, but will continue to monitor.
958 PM EST Sun Jan 10 2021 High pressure will build across the region through midweek, offering dry weather with near normal temperatures at first, then warming to above normal. The next chance for precipitation will occur late in the week as a cold front crosses the region. With the passage of trof surface winds shift from southwest to west with some drier air advecting into the region. Temperatures look to be close to normal with highs Monday from the lower 30s northwest to near 40 southeast. Expect lows in the lower and middle 20s.
Upper level low is currently centered over north central Texas and will continue to move east northeast throughout the night tonight. Sites should remain dry, with only the chance for a few sprinkles or snow flurries possible as the low passes close by. As the low pivots more northeasterly tonight, a brief period of MVFR ceilings could be seen in northwest Arkansas though it is still uncertain how low it will drop there with a deep dry layer in the lower levels, but still went ahead and put in a time of MVFR conditions when the center of the low is close by.
534 PM CST Sun Jan 10 2021 Overall conditions improving as upper low track east and wrap around precip has moved out of the area. Therefore, expect a hard freeze tonight for road ways and bridges becoming slippery and icy.
550 PM CST Sun Jan 10 2021 500 mb upper low moving into NW Ontario with short wave trough over Alberta and a ridge into Saskatchewan between the two. There remains an area of low clouds SW Manitoba/SE Saskatchewan into North Dakota moving southeast and 925 mb RH progs from NAM and HRRR indicate main area of low clouds moving east and then some clearing of the low clouds with lower clouds hanging over northern ND and NW MN into Monday. Warmer tonight due to more wind and similar temps on Monday for highs as today with upper 20s to low 30s for most. UL ridging will continue to hold strong in the western US this week. As that ridge amplifies, we will develop northwesterly flow.
Nonetheless, it will be around 5 to 10 degrees warmer than Sunday morning. Warming trend continues, as afternoon highs reach the low to mid 70s.
515 PM CST Sun Jan 10 2021 (This evening through Monday) Models all remain consistent with the upper low tracking eastward across western north Texas into far southeast Oklahoma overnight. Will keep snow in the weather grids through tonight across our far south, with the highest POPs extending from near Wichta Falls, Texas and eastward across our Oklahoma counties adjacent to the Red River, as much of the widespread activity should stay south of the Red River. However, the RAP may be a bit aggressive, but is the only short term model projecting a final round of snow tonight on the back side of the low in our southern counties along the Red River. By sunrise Monday, POPs are completely out of our forecast as the upper low moves into Arkansas.
500 mb upper low moving into NW Ontario with short wave trough over Alberta and a ridge into Saskatchewan between the two. There remains an area of low clouds SW Manitoba/SE Saskatchewan into North Dakota moving southeast and 925 mb RH progs from NAM and HRRR indicate main area of low clouds moving east and then some clearing of the low clouds with lower clouds hanging over northern ND and NW MN into Monday. Warmer tonight due to more wind and similar temps on Monday for highs as today with upper 20s to low 30s for most. UL ridging will continue to hold strong in the western US this week. As that ridge amplifies, we will develop northwesterly flow.
Possibility for Freezing Fog to return to the KAMA airport after 06z tonight. In fact, areas across the southeast TX Panhandle are already above freezing as of writing this so accumulation will be difficult. This could set the stage for some fog/low clouds to develop given the light winds tonight, and since temperature will be below freezing this could lead to patchy/areas of freezing fog across the southwest/southern TX Panhandle through the morning hours.
311 PM CST Sun Jan 10 2021 Another cloudy morning giving way to sunny skies for areas generally south of the Missouri River as the upper trough moves through. Monday will start out chilly with temperatures in the 20s, but should warm up into the 40 across eastern Kansas and western Missouri as low clouds finally clear out in the wake of the upper trough. and possibly a bit warmer. Previous model runs had the system staying well north of the forecast area with the local area only seeing some cooler air filtering in behind the front.
Surface analysis shows high pressure in place across KS/MO. with weak ridging extending east to the Ohio Valley. allowing High pressure to our west to remain in place. Thus have trended toward a cloudy sky overnight and trended overnight lows 1-2 degrees warmer than the previous forecast given the lack of any clearing overnight.
324 PM CST Sun Jan 10 2021 500 mb upper low moving into NW Ontario with short wave trough over Alberta and a ridge into Saskatchewan between the two. There remains an area of low clouds SW Manitoba/SE Saskatchewan into North Dakota moving southeast and 925 mb RH progs from NAM and HRRR indicate main area of low clouds moving east and then some clearing of the low clouds with lower clouds hanging over northern ND and NW MN into Monday. Warmer tonight due to more wind and similar temps on Monday for highs as today with upper 20s to low 30s for most. UL ridging will continue to hold strong in the western US this week. As that ridge amplifies, we will develop northwesterly flow.
A transitory ridge of high pressure will be sliding over the Northern Rockies tonight into Monday. This ridge will push the high clouds out of the region and allow for the development of patchy fog in the valleys of north central Idaho and west central Montana.
The ridge will remain amplified overhead through midweek with 500mb heights increasing to the 570 to 578 dam range across eastern Utah and western Colorado.
The main issue will be the low clouds and fog that is expected to form in the west and southwest late tonight into Monday morning. Fremont county will likely see an expansion of the low clouds and fog tonight. The low level moisture is trapped. Light wind, dry air, and relatively warmer temps aloft will make conditions favorable for fog and dense fog. High temperatures will be in the 30s to mid 40s east of the divide with 20s in Fremont county where the low clouds will keep temps down.
446 PM EST Sun Jan 10 2021 High pressure moving in from the west remains over the area through Monday.
Looking like sunshine will be limited Monday as there will likely be altocumulus associated with the trough swing through MN/WI. Otherwise, look for lows tonight in the 15-20 degree range with high Monday in the low-mid 30s.
751 PM MST Sun Jan 10 2021 EVENING UPDATE: A relatively quiet evening is in store as a ridge builds over the area.
804 PM EST Sun Jan 10 2021 High pressure moves off the East Coast tonight. Low pressure will track from the Tennessee Valley Monday to off the Carolina coast Monday night.
Tonight the aforementioned trough is expected to drop southeast through the Upper Mississippi valley, with just a weak lower level trough forecast to push through eastern North Dakota. No precipitation expected for our area, with the main impact coming from expanding stratus behind the lower level pressure axis.
156 PM PST Sun Jan 10 2021 High pressure will bring mainly dry conditions and light winds this week. Limited ventilation and inversions will develop this week as high pressure remains overhead. High pressure builds overhead for the first half of the week for dry conditions and generally light winds below ridges.
Models have weak northeasterly flow aloft this evening, then upper ridging moves in with very weak flow aloft overnight and Monday. The low level winds should be weak drainage patterns tonight, then downsloping on Monday, but not very strong.
High pressure will remain in place for most of the week.
701 PM EST Sun Jan 10 2021 High pressure remains over the region through Monday.
516 PM CST Sun Jan 10 2021 Another cloudy morning giving way to sunny skies for areas generally south of the Missouri River as the upper trough moves through. Monday will start out chilly with temperatures in the 20s, but should warm up into the 40 across eastern Kansas and western Missouri as low clouds finally clear out in the wake of the upper trough. and possibly a bit warmer. Previous model runs had the system staying well north of the forecast area with the local area only seeing some cooler air filtering in behind the front.
750 PM EST Sun Jan 10 2021 High pressure located across the Great Plains this evening will continue to build to the south and east.
Meanwhile, MVFR with areas of IFR cigs are expected to slowly dissipate tonight across eastern NM, save for KROW and other portions of SE NM where VFR conditions may drop back to IFR or LIFR conditions prior to sunrise with low clouds and freezing fog. Confidence remains low regarding when low clouds will dissipate, and if they do, where freezing fog may develop. Areas of freezing fog are expected to develop over central and eastern New Mexico tonight, leading to reduced visibilities and potentially icy road conditions. A weak upper low will cross the state on Monday, but no precipitation is expected.
Temperatures will fall into the 30s tonight but with cloud cover in place and winds staying up, only threat for freezing temps will be over the western Brush Country. With light winds and less clouds, radiational cooling should allow temperatures to fall to near or slightly below freezing late Monday night from the inland coastal plains to the eastern Brush Country.
(This evening through Monday) Models all remain consistent with the upper low tracking eastward across western north Texas into far southeast Oklahoma overnight. Will keep snow in the weather grids through tonight across our far south, with the highest POPs extending from near Wichta Falls, Texas and eastward across our Oklahoma counties adjacent to the Red River, as much of the widespread activity should stay south of the Red River. However, the RAP may be a bit aggressive, but is the only short term model projecting a final round of snow tonight on the back side of the low in our southern counties along the Red River. By sunrise Monday, POPs are completely out of our forecast as the upper low moves into Arkansas.
/issued 259 PM CST Sun Jan 10 2021/ An upper level low pressure system currently over Texas will move northeastward tonight and will be over the Mid-South by Monday morning. Some of the low clouds have eroded near the Tennessee River and the MS/AL border this afternoon. However, clouds associated with the upper level low are quickly spreading back into the area. Snow associated with the upper level low will begin to spread into portions of North Mississippi and East Central Arkansas around midnight. Models are in pretty good agreement now that the upper low will weaken over the Mid-South, opening up as an upper trof on Monday.
741 PM CST Sun Jan 10 2021 (Issued 740 PM CST Sun Jan 10 2021) An area of freezing drizzle and very fine, light snow continues to push east across southeast Wisconsin this evening. While precipitation has been light enough that our observation network hasn't triggered anything other then mist and reduced visibilities, we have had reports of freezing drizzle and very light snow.
332 PM PST Sun Jan 10 2021 Updated Air Quality Issues section High pressure over the region will continue to produce fog and low clouds in the San Joaquin Valley, with mainly clear skies elsewhere, through the week.
Nonetheless, temperatures in the teens and 20's have led to refreezing of any melting that occurred yesterday. There are also a few spots of freezing fog lowering visibilities from time to time. Freezing fog will again be possible, mainly where snow remains on the ground.
A west-east oriented ridge axis will nose in from the Rockies Monday afternoon, with a further increase in 500 mb heights/thickness on Tuesday.
1100 PM CST Sun Jan 10 2021 (This evening through Monday) Models all remain consistent with the upper low tracking eastward across western north Texas into far southeast Oklahoma overnight. Will keep snow in the weather grids through tonight across our far south, with the highest POPs extending from near Wichta Falls, Texas and eastward across our Oklahoma counties adjacent to the Red River, as much of the widespread activity should stay south of the Red River. However, the RAP may be a bit aggressive, but is the only short term model projecting a final round of snow tonight on the back side of the low in our southern counties along the Red River. By sunrise Monday, POPs are completely out of our forecast as the upper low moves into Arkansas.
144 AM EST Mon Jan 11 2021 High pressure moves off the East Coast tonight. Low pressure will track from the Tennessee Valley Monday to off the Carolina coast Monday night. Another area of dry high pressure settles over the region for Tuesday. Monday will be around normal for highs, upper 30s/low 40s west of the Blue Ridge, mid to upper 40s for the east. High pressure and upper ridging will build into our region from the west Tuesday into Tuesday night. Under partly sunny conditions, high temperatures Tuesday will warm into the lower 30s in the mountains to around 50 degrees in the piedmont.
Meanwhile, temperatures are holding in the lower 30s across the Ozarks this afternoon. Areas that see more breaks in the clouds overnight could see colder temperatures in the lower 20s as a result of radiational cooling. A warming trend begins Tuesday as winds become southwesterly allowing a warmer airmass to filter into the region.
Upper low continues to track east across northern Texas. VFR conditions should prevail everywhere else with clearing of clouds tomorrow morning as the upper low shifts east of the area. /Issued 942 PM CST Sun Jan 10 2021/ Upper low, currently over north Texas, continues to shift eastward this evening. Still the potential for very light snow to develop across far southeast Oklahoma overnight as upper low passes just to the south.
Northeast winds around 5 knots at the beginning of the period increase to 5 to 15 knots overnight into early Monday morning, with the higher wind speeds near the coast. Lows tonight still look to be in the lower to mid 30s along and west of I-65 (coolest temps over Choctaw and Wayne counties), with upper 30s to around 40 east of I-65. Highs on Monday range from the lower to mid 40s along and west of I-65 with upper 40s to around 50 east of I-65.
With temperatures dropping below freezing this evening, expect rain to quickly transition to snow across southern and central Arkansas. With the better available moisture closer to the low across southern portions of the state, anticipate that region will receive the highest snowfall amounts. Moreover, temperatures Monday night will drop into the lower to mid 20s, which will extend hazardous road conditions as any lingering moisture refreezes on area roadways. It'll be warmer on Tuesday. Temperatures are expected to rise into the upper 40s and lower 50s on Tuesday afternoon as the low moves east of the state and southwesterly flow returns.
1237 AM EST Mon Jan 11 2021 High pressure over the Ohio Valley will shift south for Monday and Tuesday. A ridge will remain northeast over the Ohio and Tennessee Valleys.
Moisture continues to advect northward as an upper low approaches from the west. CDG Chattanooga Airport, TN 43 33 49 27 52 / 50 20 10 0 0 Knoxville McGhee Tyson Airport, TN 41 33 45 27 49 / 30 20 10 0 0 Oak Ridge, TN 42 31 46 26 49 / 30 10 10 0 0 Tri Cities Airport, TN 41 31 46 23 46 / 20 20 10 0 0.
Upper level ridging will amplify over the Rockies and spread eastward into the Central Plains this period.
Mostly northwest flow will remain overhead as a broad, high- amplitude ridge, centered around 30N, 130W, leaves the door open for passing mid to high clouds through much of the upcoming week.
400 AM EST Mon Jan 11 2021 Weak low pressure over the Gulf of Mexico will move northeasterly across Florida late today and off the Carolina coast on Tuesday.
Expect the clear areas to continue to cool into the low to mid 20s until clouds spread back in. Temps have stayed confined to the low to mid 30s as a result of the clouds, although a few eastern or southern spots could still reach the upper 30s briefly this afternoon.
1018 PM EST Sun Jan 10 2021 High pressure over the Ohio Valley will shift south for Monday and Tuesday. A ridge will remain northeast over the Ohio and Tennessee Valleys.
836 PM MST Sun Jan 10 2021 Water vapor imagery showing high pressure aloft building in from the north with drying airmass filtering in from the north and northeast. Models have weak northeasterly flow aloft this evening, then upper ridging moves in with very weak flow aloft overnight and Monday. The low level winds should be weak drainage patterns tonight, then downsloping on Monday, but not very strong. Meanwhile, there will be steady warming over the ridges and east slopes with gentle downslope winds, still light in the lower areas.
The mid to upper level low is moving off to the northeast and northwesterly flow is moving over Texas. Temperatures this morning are around 10 degrees cooler and dewpoints around five degrees lower than 24 hours ago. Low clouds wrapped around the backside of the upper low blanket our CWA. As the upper low moves farther away, the flow will turn zonal today. The low clouds will retreat to the east and skies will clear from west to east through the day.
219 AM EST Mon Jan 11 2021 There is a weak 500mb ridge, which kept the weather quiet today, that is breaking down ahead of a weak 500mb low, currently over east texas. This will keep the cold front from passing through the area on Tuesday, becoming more of a stalled weak boundary over Central Florida. There is also a weak area of high pressure just to the northeast of the Bahamas, which will help to advect some moisture towards the area. Increased cloud cover and rain chances will also allow for a little cooler temps with temps in the low to mid 70s once for the end of the week. As we move into the weekend another deep trough will be dropping out of Canada and into the eastern CONUS.
109 AM EST Mon Jan 11 2021 High pressure will build across the region through midweek, offering dry weather with near normal temperatures at first, then warming to above normal. The next chance for precipitation will occur late in the week as a cold front crosses the region. With the passage of trof surface winds shift from southwest to west with some drier air advecting into the region. Temperatures look to be close to normal with highs Monday from the lower 30s northwest to near 40 southeast. Expect lows in the lower and middle 20s.
The low stratus deck is beginning to clear out in the NE quadrant of Kansas and NW Missouri.
1038 PM CST Sun Jan 10 2021 Another cloudy morning giving way to sunny skies for areas generally south of the Missouri River as the upper trough moves through. Monday will start out chilly with temperatures in the 20s, but should warm up into the 40 across eastern Kansas and western Missouri as low clouds finally clear out in the wake of the upper trough. and possibly a bit warmer. Previous model runs had the system staying well north of the forecast area with the local area only seeing some cooler air filtering in behind the front.
After midnight fog and freezing fog will be possible at KLBB and KPVW. The fog and freezing fog could cause CIGS fall to IFR at both terminals. The center of the upper low was currently over the Big Country causing the heavy snow for the Rolling Plains. Furthermore, freezing fog is again expected to develop, mostly for areas on the caprock. By Tuesday morning an upper ridge will begin to amplify across the southwest U. As an upper level low slides to the southeast of the forecast area during the day, northwest flow aloft will develop across the region.
Though low clouds have cleared out of KROW for now, confidence is moderate to high that they will return toward sunrise with freezing fog possible as well. Areas of freezing fog are expected to develop over central and eastern New Mexico tonight, leading to reduced visibilities and potentially icy road conditions. A weak upper low will cross the state on Monday, but no precipitation is expected.
A late week cold front will bring a return of precipitation chances. Also adjusted the cloud cover to increase in advance of the approaching trough. Surface-based ridging of varying strength will continue to keep dry weather in the area into the midweek period. All models are now on board in keeping precipitation associated with southern stream low pressure fully south of the CWA on Monday night.
Temperatures will be warmer today than yesterday with highs ranging from the lower 40s in southeast Kansas and western Missouri to the upper 30s over the eastern Ozarks. The high slides south of the area tonight with light south to southwest winds across the area.
Lows tonight still look to be in the lower to mid 30s along and west of I-65 (coolest temps over Choctaw and Wayne counties), with upper 30s to around 40 east of I-65. Highs on Monday range from the lower to mid 40s along and west of I-65 with upper 40s to around 50 east of I-65.
356 AM EST Mon Jan 11 2021 High pressure will continue to build into the Mid-Atlantic, influencing our weather through the week. A weak low pressure system will pass to the south of our area on Tuesday.
912 PM CST Sun Jan 10 2021 (Issued 740 PM CST Sun Jan 10 2021) An area of freezing drizzle and very fine, light snow continues to push east across southeast Wisconsin this evening. While precipitation has been light enough that our observation network hasn't triggered anything other then mist and reduced visibilities, we have had reports of freezing drizzle and very light snow. High pressure over the central plains will also continue to head southeast tonight into Monday, allowing the pressure gradient to tighten across southern Wisconsin ahead of the next approaching trough. More clouds are likely though as the trough moves through Monday night into Tuesday. Not much moisture to work with, so not expecting precipitation most places later tomorrow into tomorrow night as the trough pushes through.
Freezing fog is looking less favorable, as there are no areas reporting it where expected, thus will deal with freezing fog as amendments if it occurs. In fact, areas across the southeast TX Panhandle are already above freezing as of writing this so accumulation will be difficult. This could set the stage for some fog/low clouds to develop given the light winds tonight, and since temperature will be below freezing this could lead to patchy/areas of freezing fog across the southwest/southern TX Panhandle through the morning hours.
312 AM EST Mon Jan 11 2021 Lower amplitude mid level northwest flow void of meaningful forced ascent or moisture/thermal advection leaves a largely static environment featuring dry conditions and temperatures on the warmer side of average throughout the early week period. Pervasive region of broken to overcast stratus now blanketing the region lodged within an existing low level thermal trough, effectively retaining a narrow moist layer beneath a stout inversion above 900 mb. Gradual exit of the mean trough synced with diurnal heating under light southwest wind will afford a modest diurnal response today. Highs today arriving within a couple degrees either side of the freezing mark - likely the 'coldest' day of this work week.