Aikyam-Lab/Synoptic-Bench huggingface dataset:
1239 AM EST Sun Dec 12 2021 Cooler and drier air is settling into the region, with the wind subsiding this evening into the overnight.
This is not surprising given the fact the Florida Keys remain on the southwestern periphery of a large and expansive area of high pressure that is centered over the North Atlantic. Meanwhile, aloft we remain under the influence of a deep layer ridge.
In addition, a lee trough will develop across the Texas Panhandle, resulting in a tightening pressure gradient across West Central Texas. Warmer temperatures are forecast overnight, with lows in the upper 30s to lower 40s.
Just bumped up highs tomorrow towards the NBM 75th percentile which seems reasonable given the broad ridging that will be overhead. Upper level features this afternoon include mid-level height rises as a broad ridge gradually builds over the Northern Plains, while a stream of upper level moisture associated with the polar jet manifested in upper level clouds over much of western North Dakota. At the surface, low pressure over the southern Canadian Prairies and high pressure to the south was responsible for a pressure gradient and breezy westerly winds this afternoon, which should be maintained in some fashion through the night. This westerly flow will allow for relatively warmer morning lows on Sunday, generally in the 20s across the state. As the ridge axis and thermal ridge arrive Sunday, highs well above normal are expected across the region.
329 AM EST Sun Dec 12 2021 Sunday will be dry but cooler and blustery.
350 AM EST Sun Dec 12 2021 High pressure and dry conditions will prevail through the first part of the week before the next chance for showers arrives toward mid week.
255 AM EST Sun Dec 12 2021 High pressure is expected to continue to build into the region. Cooler temperatures are expected to begin the week, then moderating by midweek. Temperatures will continue to fall into the lower 30s to upper 20s in strong CAA. Broad central CONUS high pressure will build into the region by tonight, with a return to dry and seasonable conditions provided nw flow aloft.
High pressure will be in place over the next few days to keep the area dry and quiet. /issued 456 PM CST Sat Dec 11 2021/ After a busy night last night, the cold front has finally moved out of the Mid-South. High pressure will build into the region later tonight and we'll have the return to dry weather. Highs on Sunday will bounce back in the low to mid 50s.
1236 AM EST Sun Dec 12 2021 A cold front will track across the region tonight.
305 AM EST Sun Dec 12 2021 A weakening cold front is currently pushing through the panhandle. For the work week temperatures will rebound quickly for the Nature coast as ridging in the Gulf quickly returns. The work week will be a quiet but warm one with strong ridging remaining over the state. A weak cold front will push through today with a possible shower or two across our northern waters. Ridging will return for the work week with light winds and no boating hazards expected.
Temps crashed from morning readings in the 60s, and most locations are now in the lower 40s. Look for a chilly start to Sunday with high pressure overhead, and tranquil weather continuing through the day. Tight closed low will kick out of the Four Corners Wed morning and lift rapidly to Lake Superior by Thu morning.
Everybody should be at or just below freezing in any event.
Southwestern Wisconsin and northeast Iowa had the least amount of snow, with about 1-3 inches as they experienced a wintry mix with freezing rain and icing. Gustier winds will also move out of the area tonight as the cold front moves out of the area.
818 PM MST Sat Dec 11 2021 Winds remain gusty across the higher terrain and portions of the foothills, however winds appear to have peaked in strength. Winds remain gusty over the higher elevations with stations gusting to 60 mph this afternoon. fields showing a stable layer at ridgetop extending into the foothills. The HREF ensemble mean wind gusts continue to show potential for gusts to 70 mph through tomorrow morning over the higher mountains. A weak ridge over Colorado will promote dry and warmer conditions Sunday.
Kavinsky (Issued 200 PM CST Sat Dec 11 2021) Tonight through Sunday night: Strong low pressure northeast of lower Michigan will continue to pull northeast away from the area.
Areas with the deepest snow cover - south central SD to southwestern MN - will warm the least with highs remaining in the lower to mid 30s. Outside of this area where snow cover is much less deep, highs will reach into the lower 40s.
Strengthening high pressure stretching from Texas to the mid- Atlantic coast, combined with a dry atmosphere, will give us clear skies today and tonight other than possibly a few wisps of cirrus. Mostly zonal upper flow becomes more amplified by mid-week as an upper trough advances east from the West Coast.
(Today through Monday afternoon) Clear skies and light winds are causing temperatures to cool to near freezing across much of the region. Winds have stay elevated across the southern Permian Basin preventing temperatures in Midland/Odessa from reaching freezing, but that could change around sunrise as winds calm. Troughing continues to deepen over W CONUS and in response ridging will build in over the plains. Mid-level ridging is expected to increase heights across the Southern Plains.
Aloft, the flow is expected to flatten or become slightly ridged through this time period.
500 AM CST Sun Dec 12 2021 Coteau downslope winds reportedly generating some light drifting snow which will be a local problem through the morning till winds properly mix out, and with sun-up and temperatures initially below freezing, some melting/refreeze may be an issue on some of the roads out that way, its tough to tell precisely because strongest winds are not co-located with areas of snow cover but best guess is this will mainly be an issue around Grant county.
So, we expect periods of mainly light snow to be found over the high country through at least Monday night. Highs will be a little cooler than Sundays due to weaker mixing, but still in the 40s for most locations.
A cold front will move across the region late this morning through the afternoon hours. The lower valleys across far Northwest Montana remain in a winter storm warning where several additional inches are possible today. The large upper low pressure system and its amplified trough, which extends south to California, will move little over the next 48 hours.
Southerly to southwesterly 850 mb flow will cause WAA into the Northern Plains and Upper Midwest early this week, generating subtle upper-level ridging east of the Rockies. The incoming warmer 850 mb temps should signal a steady warm up at the surface.
Near zonal flow eventually see heights slowly rising through the end of the weekend and into Monday as a trough digs in to our west. Temps in the northern counties look to be knocked back to around the freezing mark for highs, although overall mild temps will continue.
329 AM CST Sun Dec 12 2021 Coteau downslope winds reportedly generating some light drifting snow which will be a local problem through the morning till winds properly mix out, and with sun-up and temperatures initially below freezing, some melting/refreeze may be an issue on some of the roads out that way, its tough to tell precisely because strongest winds are not co-located with areas of snow cover but best guess is this will mainly be an issue around Grant county.
Tranquil weather for the short term, with high pressure building into the area through the rest of the weekend and into the first of the week. Calm winds will be in place overnight in addition to a fairly dry airmass, radiational cooling should be pretty good, so went with the lower side of guidance overnight into Monday morning.
645 AM EST Sun Dec 12 2021 High pressure will build into the region today through Monday, then persist through mid week. Sunny and much cooler today, clear and cold tonight. The cold front will be offshore to start the day. The high will move directly overhead tonight. High pressure will remain overhead Monday and Monday night. Then, we undercut statistical guidance under high pressure for lows Monday night - and skewed the forecast lows toward the colder MET. A warm and mostly dry week upcoming for central NC under the influence of an anomalous ridge that will building over sern US.
Dry and cold conditions will prevail this morning with subfreezing temperatures again in the Kern County Desert.
619 AM EST Sun Dec 12 2021 High pressure and dry conditions will prevail through the first part of the week before the next chance for showers arrives toward mid week.
702 AM EST Sun Dec 12 2021 Seasonably cooler today before temperatures trend well above normal through the end of the week.
639 AM EST Sun Dec 12 2021 High pressure is expected to continue to build into the region. Cooler temperatures are expected to begin the week, then moderating by midweek. Warm advection and lingering high pressure will keep the region quiet, clear, and dry today and into tonight. Broad central CONUS high pressure will build into the region by tonight, with a return to dry and seasonable conditions provided nw flow aloft.
An approaching upper-level trough will bring snow showers to higher elevation area across northwestern Nevada late tonight into Monday.
This should keep temperatures cooler and in the mid to upper 70s, but less cloud cover to the south should still allow temperatures to warm into the low to mid 80s. Otherwise, still may need to add brief VCSH mention at a few sites as a weak cold front pushes southward through central Florida today. Low ceilings and fog are looking like a good bet again tonight with the forecast leaning more toward the low ceilings this time around.
354 AM MST Sun Dec 12 2021 9z surface analysis highlights a pressure trough centered from central MT southward into NE Wyoming. Warmer temperatures are expected across the area today, although snow cover is likely to slow the warming across the southern half of the CWA. Looking further upstream this morning, water vapor imagery clearly shows a large trough axis/upper low centered off the coast of British Columbia. A series of vort maxes will eject eastward through southern Canada over the next couple of days as the trough digs southeastward.
258 AM MST Sun Dec 12 2021 9z surface analysis highlights a pressure trough centered from central MT southward into NE Wyoming. Warmer temperatures are expected across the area today, although snow cover is likely to slow the warming across the southern half of the CWA. Looking further upstream this morning, water vapor imagery clearly shows a large trough axis/upper low centered off the coast of British Columbia. A series of vort maxes will eject eastward through southern Canada over the next couple of days as the trough digs southeastward.
959 AM EST Sun Dec 12 2021 A chilly morning across the region as temperature readings range in the low to mid 30s. High pressure directly overhead will keep us high and dry through today, with sunshine helping to warm temps into the upper 40s and near 50 in some areas by this afternoon. Strengthening high pressure stretching from Texas to the mid- Atlantic coast, combined with a dry atmosphere, will give us clear skies today and tonight other than possibly a few wisps of cirrus. Mostly zonal upper flow becomes more amplified by mid-week as an upper trough advances east from the West Coast.
538 AM EST Sun Dec 12 2021 Seasonably cooler today before temperatures trend well above normal through the end of the week.
Temperatures today will be cool behind yesterday's cold front with highs in the 60s. Isolated rain chances will return along the coast and over the waters as a weak coastal trough develops Monday morning.
Today's mild temperatures and low dewpoints will likely drop RH into the 25-30% range across much of eastern Missouri, with the lowest readings expected in portions of central and SE MO.
306 AM CST Sun Dec 12 2021 Per regional satellite imagery, freezing fog developing near mainly bodies of water across mid state region and development in low lying fog prone locations across area can not be ruled out either. Expect freezing fog to persist through 8 AM CST.
A cold front will clear the tri-state area this morning, with a drier air mass moving in today.
High pressure currently extending from the Ohio River Valley into the Southern Plains will shift slowly eastward today. Lows tonight will only drop into the lower to middle 30s as southerly winds of 10-15mph continue. Unseasonably warm weather will be on tap for the week ahead as a deep upper trough evident on latest water vapor over the North Pacific digs southward into the western CONUS. resulting in downstream ridging over the Plains/Midwest.
Per regional satellite imagery, freezing fog developing near mainly bodies of water across mid state region and development in low lying fog prone locations across area can not be ruled out either. Expect freezing fog to persist through 8 AM CST.
A broad upper level ridge remains in place over the northern Plains, and the ridge axis will make its way across the state through the day. This pattern will favor well above normal temperatures for most, with afternoon highs ranging from the upper 30s over the Turtle Mountains to the lower 50s across the southwest. A weak and dry cold front will approach the northwest in the evening and move southeast across the state overnight. Highs on Monday will be a bit cooler (but still above normal) behind the weak cold front, ranging from the upper 20s northeast to lower 40s southwest.
VFR conditions are expected throughout the TAF cycle as high pressure builds northeast from the Mid-Mississippi Valley today. The region is positioned between a large area of high pressure covering the OH/TN valleys and low pressure in central Canada with the gradient between these systems steep enough to power SW gusts near 30 mph by afternoon. High temperature projected to reach above normal values in the lower to mid 40s then feel more like lower 30s into this evening.
/issued 305 AM EST Sun Dec 12 2021/ A weakening cold front is currently pushing through the panhandle. For the work week temperatures will rebound quickly for the Nature coast as ridging in the Gulf quickly returns. The work week will be a quiet but warm one with strong ridging remaining over the state. A weak cold front will push through today with a possible shower or two across our northern waters. Ridging will return for the work week with light winds and no boating hazards expected.
Coteau downslope winds reportedly generating some light drifting snow which will be a local problem through the morning till winds properly mix out, and with sun-up and temperatures initially below freezing, some melting/refreeze may be an issue on some of the roads out that way, its tough to tell precisely because strongest winds are not co-located with areas of snow cover but best guess is this will mainly be an issue around Grant county.
Issued by National Weather Service Jackson KY 1130 AM EST Sun Dec 12 2021 High pressure and dry conditions will prevail through the first part of the week before the next chance for showers arrives toward mid week.
Despite clear skies tonight, lows will only dip down into the low to mid 30s, 5 to 10 degrees above normal for this time of year.
SHORT TERM (Tonight through Monday Night): A coastal trough will develop offshore the lower Texas coast tonight and light rain or drizzle is expected to develop offshore the lower Texas coast as a result with cloud cover increasing across the lower Texas coast. Some of the light rain or drizzle will develop across the coastal sections of deep south Texas late tonight into early Monday as the coastal trough moves inland Mon afternoon. Patchy fog is expected to develop across portions of the Rio Grande Valley and northern ranchlands Mon night with an onshore developing Mon night as the coastal trough lifts northward and weakens. Temperatures will be a challenge tonight into Monday with the coastal trough providing cooler temperatures across the northern and western portions of the CWA than the temperatures across the lower Rio Grande Valley.
1003 AM CST Sun Dec 12 2021 Skies are sunny across the Mid-South this morning with temperatures in the low to mid 40s. A dry and seasonably cool afternoon in store for the region as highs reach the low to mid 50s.
For tomorrow, high pressure will be shifted slightly further east, allowing our winds to become southwesterly as we get into a return flow WAA regime.
Low pressure will dig southward along the west coast tonight and during Monday, which will place the Northern Rockies under a south to southwesterly flow pattern. A warm front is expected to move through central Idaho and western Montana on Monday, which will maintain mild temperatures and showers.
Southwest winds will continue to advect in warmer air, allowing our temps to get up to the low 40s along the ND/SD border, and above freezing elsewhere. Near zonal flow eventually see heights slowly rising through the end of the weekend and into Monday as a trough digs in to our west. Temps in the northern counties look to be knocked back to around the freezing mark for highs, although overall mild temps will continue.
136 PM EST Sun Dec 12 2021 Ridging over the Great Lakes/Midwest will create warm conditions through midweek. Lingering high pressure will keep the region quiet, clear, and dry through tonight. Adjusted overnight temperatures in the ridges down from guidance, radiational cooling under dropping dew points and light winds will be sufficient.
Dry air has accompanied the warmer temps but this may change in the extended.
Otherwise, dry mainly zonal mid and upper level flow will continue across the area through Monday on the north side of an upper ridge across the Gulf of Mexico.
Dry and colder today with warmer temperatures tomorrow. Discussion: Pleasant weather will continue today and tomorrow with sunny skies expected as high pressure near the surface remains and ridging in the mid levels begins to strengthen. Expect another chilly night tonight under clear skies with most locations expected to dip down below freezing once again. Tomorrow should be warmer under the sunny skies and winds turn a bit more southerly. This will result in temperatures about 5 degrees warmer compared to today.
1036 AM EST Sun Dec 12 2021 Seasonably cooler today before temperatures trend well above normal through the end of the week.
1022 AM EST Sun Dec 12 2021 Seasonably cooler today before temperatures trend well above normal through the end of the week.
A chilly morning across the region as temperature readings range in the low to mid 30s. High pressure directly overhead will keep us high and dry through today, with sunshine helping to warm temps into the upper 40s and near 50 in some areas by this afternoon. Strengthening high pressure stretching from Texas to the mid- Atlantic coast, combined with a dry atmosphere, will give us clear skies today and tonight other than possibly a few wisps of cirrus. Mostly zonal upper flow becomes more amplified by mid-week as an upper trough advances east from the West Coast.
235 PM EST Sun Dec 12 2021 High pressure over Tennessee will settle over central NC tonight and remain in place through midweek. A 1030 mb high pressure system over central and eastern Tennessee will settle over central NC tonight. Low-level thicknesses will rise some 15-18 m, supporting high temperatures about 5-6 degrees warmer than today (4-6 degrees above average), with upper 50s in the north and lower 60s across the Sandhills and southern coastal Plain.
225 PM EST Sun Dec 12 2021 High pressure over Tennessee will settle over central NC tonight and remain in place through midweek. A 1030 mb high pressure system over central and eastern Tennessee will settle over central NC tonight. Low-level thicknesses will rise some 15-18 m, supporting high temperatures about 5-6 degrees warmer than today (4-6 degrees above average), with upper 50s in the north and lower 60s across the Sandhills and southern coastal Plain.
Today started off cold with patchy freezing fog across parts of the Mid State. High pressure is building into Middle Tennessee following yesterday's fropa.
This may keep temperatures a bit cooler than forecast in some locations today, but there is a western extent to this cloud cover approaching the Montana border, thus a chance of clearing this afternoon in the west. A broad upper level ridge remains in place over the northern Plains, and the ridge axis will make its way across the state through the day. This pattern will favor well above normal temperatures for most, with afternoon highs ranging from the upper 30s over the Turtle Mountains to the lower 50s across the southwest. A weak and dry cold front will approach the northwest in the evening and move southeast across the state overnight. Highs on Monday will be a bit cooler (but still above normal) behind the weak cold front, ranging from the upper 20s northeast to lower 40s southwest.
/issued 1040 AM CST Sun Dec 12 2021/ After near/sub-freezing temperatures this morning, we are warming quite nicely under abundant sunshine with dominant high pressure.
215 PM CST Sun Dec 12 2021 As high pressure moves east across the area, look for dry weather tonight through Monday night.
Monday night will be a little cooler as the winds will be light with lows in the mid 20s to low 30s across the area.
That said, clear skies and calm winds will allow for another night of ideal radiational cooling, allowing temperatures to once again plunge near or below freezing for much of the Tennessee Valley. For areas with below freezing temperatures, patchy freezing fog may cause hazardous travel conditions and should be closely monitored. The biggest change through the short term period will be increasing ridging over the Gulf of Mexico nudging into the Southeast.
1254 PM EST Sun Dec 12 2021 Seasonably cooler today before temperatures trend well above normal through the end of the week.
1224 PM EST Sun Dec 12 2021 High pressure builds into the region today gradually diminishing our winds and providing us with seasonable temperatures.
Despite low dewpoints, limited decoupling with the contd sfc pres gradient and ensuing, albeit weak, warm advection will hold overnight lows near, or a couple degrees under freezing - very near the mid Dec.
1029 mb high pressure near the AR/TN/MS border and ridging ne into the eastern ohio river valley, will drift east into the southeast states by this evening, providing a southerly breeze over central IL rest of today. Nearby high pressure ridge will provide ample sunshine today with just some passing thin cirrus clouds. High pressure currently extending from the Ohio River Valley into the Southern Plains will shift slowly eastward today. Lows tonight will only drop into the lower to middle 30s as southerly winds of 10-15mph continue. Unseasonably warm weather will be on tap for the week ahead as a deep upper trough evident on latest water vapor over the North Pacific digs southward into the western CONUS. resulting in downstream ridging over the Plains/Midwest.
A few showers located over the warmer waters of the Gulf Stream have had some vertical extent, but have still remained capped at approximately 15kft. A persistent boundary around 10 miles south of the Lower Keys has aided in the development of some shower activity. Wind observation platforms are recording winds ranging from 7 to 12 knots in the waters adjacent to the Florida Keys and skies are mostly sunny, aside from the cloud cover associated with the shower activity just south of the islands that is overtaking portions of the Lower Keys. From synopsis, A cold front will move down the Florida Peninsula this afternoon and tonight, while also pushing offshore the southeast U. As the front weakens across south Florida early Monday, strong high pressure will build across the Eastern Seaboard and then remain quasistationary for much the week.