Aikyam-Lab/Synoptic-Bench huggingface dataset:
Highs will be in the low to mid 80s across northeast Florida, and the 70s to around 80 for southeast Georgia. The high temperature will be very close to a record for Jacksonville this afternoon. Sea fog has pushed to 15-30nm offshore in the southerly flow, with the lowest visibilities mainly north of the region.
The models continue to scale back on precipitation as the main low is trending further west, and thus have kept precipitation rates and amounts on the low side. At the tail end of the system, snow levels will decrease once again to 2000 feet, meaning snow may be seen along I-5 at Siskiyou Summit as well as some of the higher mountain passes before precipitation comes to an end Monday morning. The highest amounts will be in the Cascades above 4000 feet where 2 to 5 inches of total snowfall could occur, with up to 3 inches of snow possible above 2500 feet. Conditions will clear as high pressure returns Monday afternoon, but temperatures will take a bit longer to rebound. Some fog and freezing fog will be possible overnight in the valleys west of the Cascades.
Areas of freezing drizzle will continue through early morning across much of the area. Additional light amounts of freezing drizzle or ice will remain this morning of up to a few one hundredths of a inch. Temperatures will barely reach near the freezing mark today for most location with another cold night tonight back down in the teens.
509 AM CST Sun Feb 11 2018 Large scale pattern has been rather stagnant then last several days consisting of a broad trof over the CONUS with an upstream ridge sitting off the west coast. At the sfc, high pressure remains in control across the central Plains.
428 AM CST Sun Feb 11 2018 Latest radar data is still detecting light freezing drizzle from Tulsa into northwest Arkansas. Untreated roads and sidewalks as well as bridges/overpasses will be very slippery this morning. Temperatures will eventually rise above freezing, but low clouds will prevent much temperature recovery until at least mid day.
330 AM MST Sun Feb 11 2018 Arctic cold front was analyzed from eastern ID across southwest WY to west of the CO Front Range.
Precipitation will pick up briefly again after the afternoon break as the the cold front crosses the region. Dry conditions expected areawide by Monday morning as high pressure builds in the wake of the front.
301 AM MST Sun Feb 11 2018 Arctic cold front was analyzed from eastern ID across southwest WY to west of the CO Front Range.
Of course these cooler temperatures will bring back the threat of needing a wind chill advisory tonight across our northern tier of counties from central MN into northwest WI. Looks marginal, but is something we'll let the next shift take a closer look as it won't take much of a nudge in the forecast in terms of temperatures or winds to send apparent temps mostly warmer that -25F (no advisory) or colder than that (advisory needed).
946 AM EST Sun Feb 11 2018 WV imagery and RAP analysis indicated a mid/upper level trough through the cntrl CONUS.
Stationary front extends from developing low pressure over the Lower Mississippi Valley thru the Ohio Valley northeastward into New England early this morning. Strong high pressure extends from the Southern Plains thru the Upper Mississippi Valley and the Western Great Lakes into Quebec. Thermal gradient is tightening between these two system as the Lower Mississippi Valley low gains strength and is now beginning to lift NE into the Ohio Valley. Strengthening 700-500 mb F-gen and moist isentropic ascent (I285) north of the low and stationary front is producing an area of widespread snow extending from the Central Plains into the Southern Great Lakes region. Snow will quickly end from west to east this afternoon as the low center and associated deeper moisture/better lift exits NE into New England. High temps this afternoon will be mainly in the low to mid 20s.
355 AM MST Mon Dec 11 2017 With an upper level ridge of high pressure to our west, expect mostly sunny skies over the region for the next few days. A ridge of high pressure will be over the region, resulting in dry conditions prevailing.
Gusts between 10-15 kts will be possible at all sites with the highest wind speeds at GLH and GWO. A dry cold front will move through the area tonight and bring a wind shift to the northwest after 00Z.
but expect cooler temps to result in higher RH values during the afternoon hours. Temps will be about 20 deg cooler.
This AM, surface ridging across the Gulf Coast States will weaken as a low pressure system digs southward out of Manitoba toward the Upper Midwest and around toward Ohio and into New York by early Tuesday. today and tonight as the upper trough digs with a good northwest flow to help the front along. What we will notice today will be milder temperatures with another day of sunshine and more melting of remaining snowfall with a milder west to southwest wind in store for today and highs from the 50s to the lower 60s.
Our skies are clear and dew points are some 5 to 10 degrees cooler on average, meaning it will be a dry day humidity wise with abundant sunshine. Our next cold front will usher in Northwest winds overnight and make for a much cooler day tomorrow with highs back below average in the fifties.
930 AM EST Mon Dec 11 2017 High pressure will build south of the region today.
557 AM EST Mon Dec 11 2017 A clipper system will track across the lower lakes tonight dragging an arctic front across the forecast area.
Strong and persistent high pressure aloft will remain the dominant weather feature across the western states through at least the middle of this week. Strong ridging remains the dominant weather feature over the forecast area this morning. High pressure is expected to persist through the work week, resulting in continued inversions and associated cold temperatures and fog/haze. The ridge will shift west some by midweek, and weak storm systems moving over the top of it will enhance the mid and upper level flow over Utah and southwest Wyoming somewhat, but this should have limited impact at best on the inversions.
High pressure parked across the western United States will result in dry and quiet weather this week. Temperatures will be well above average for this time of year with highs in the middle and upper 70s across the lower deserts. Mid and upper level easterly flow north of the low continues to advect in modest amounts of moisture into the southern half of Arizona and into southern California.
309 AM MST Mon Dec 11 2017 High pressure parked across the western United States will result in dry and quiet weather this week. Temperatures will be well above average for this time of year with highs in the middle and upper 70s across the lower deserts. Mid and upper level easterly flow north of the low continues to advect in modest amounts of moisture into the southern half of Arizona and into southern California.
Tonight-Wed Night: All of the Great Plains will remain under a very strong NW regime throughout these periods with a deepening upper-deck trough situated over the eastern U. while a strong mid-upper ridge remains parked out west. trough undergoing pronounced cyclogenesis the ridge may get forced slightly west to the Pacific coast. A cold front will move south across the area during the afternoon with SCT-BKN stratocu affecting far eastern Kansas into early this evening.
Possible winter weather impacts (blowing snow) may occur across the part of northwest Minnesota that received fresh snow and temperatures did not climb above freezing. Strong upper level low propagating through the region causing all sorts of concerns. Initially, precipitation associated with the vorticity advection across the southern parts of the region is falling as mostly liquid, and leading to icy roads where temperatures are below freezing. With that said, temperatures are rising above freezing which is limiting impacts. Cold front is currently (10z) situated just north of the International border, and set to quickly propagate from north to south through the region this morning. The other concern will be flash freeze potential with moist roads and temperatures above freezing before the fropa. Will monitor, but roads may have enough time to dry before temperatures drop below freezing.
356 AM MST Mon Dec 11 2017 With an upper level ridge of high pressure to our west, expect mostly sunny skies over the region for the next few days. A ridge of high pressure will be over the region, resulting in dry conditions prevailing.
West to northwest winds will become gusty late this morning and through the afternoon as a cold front moves through the region. More seasonal temperatures are forecast Tuesday/Tuesday night behind the exiting upper level trof axis Tuesday morning as upper level northwesterly flow sets up over the Plains.
556 AM CST Mon Dec 11 2017 Weak ridging moving through central IL this morning, resulting in some variability in the winds, but generally more southerly flow at the surface. Tuesday, the cold air mass will keep the highs in the upper 20s/near 30.
Ahead of the cold front associated with this low pressure system expect warm air to bulge into the Mid-South as 850 mb temps climb above 10C. The cold front pushes through during the evening.
More seasonal temperatures are forecast Tuesday/Tuesday night behind the exiting upper level trof axis Tuesday morning as upper level northwesterly flow sets up over the Plains.
Weak 500 mb ridging over central Mexico will ease closer to the BRO CWFA during the period. However, deep mid-level troughiness over the eastern half of the United States will help a cold front come through Deep South Texas and the Rio Grande Valley on Tuesday. Even with the cold front passage, dry weather is anticipated with cloudiness limited to mainly high cirrus streaming overhead from the west.
At the surface, winds will shift to the southwest by this afternoon which will bring warmer temperatures to the Tri-state region.
858 AM EST Mon Dec 11 2017 The high pressure ridge will continue to push towards the south, resulting in low cloud formation later tonight. Temperatures will be slightly warmer today than yesterday, with warmer overnight lows due to the increased cloud cover. The high pressure ridge will continue slide south of the ridge through tonight. A cold front will move southeast across the area Tuesday, bringing advisory criteria conditions.
940 AM EST Mon Dec 11 2017 High pressure along with cold and dry air will remain in control of the region today as a dry cold front approaches from the northwest.
With the cooler air, comes higher Rhs. Wind speeds should certainly meet the criteria for a warning, whereas min RH values may only be marginal at best, esply in the cooler air across the nern corner of the CWA. HiRes models show some of the cooler air on the plains backing into the I-25 corridor on light easterly winds this afternoon. The high country will probably see little more than a few deg drop in max temperatures from yesterday. Tonight, the high plains cool air mass will continue to slip south- southeast away from the area with light drier/warmer west- southwesterly breezes by sunrise. In the high country, should see another night of near zero readings and patchy dense fog on the high valley floors such as around Kremmling. Upper ridge of high pressure continues to meander around the Western U.
There is a 120 kt jet max overhead from the base of the broad eastern trough. /issued 410 AM CST Mon Dec 11 2017/ Deep longwave trough encompasses over half of the entire country, including the local forecast area. The base of this trough will lift slightly today which will allow for a brief day of warming. A strong cold front will accompany this feature, likely pushing through the area Tuesday morning.
930 AM EST Mon Dec 11 2017 High pressure will bring a brief period of fair weather to the Appalachians and central mid Atlantic region to start the work week. However, low pressure moving through the Great Lakes region will push another surge of very cold air into the region on Tuesday with blustery conditions and snow showers in the mountains. Looking at strong cold air advection behind front Tuesday with temperatures starting out steady or slightly warming in the west in the lower to mid 30s, with mid 40s east, then temperatures should crash into the 20s by late afternoon. There will be a burst of winds behind this front with gusts to advisory levels likely in the higher terrain of the Blue Ridge and Alleghanys, but coverage at the moment is borderline in terms of issuing headlines.
Clear skies across interior NorCal except for some high clouds south of I-80 associated with the closed low near Baja California.
A cold front will be entering into Southeast, Northeast Texas, and Southwest Arkansas between 12/01-12/03Z to near the Interstate 30 corridor, to near a KELD-KSHV-KTYR line between 12/03-12/05Z, and a KMLU_KLFK line between 12/05-12/07Z. Our skies are clear and dew points are some 5 to 10 degrees cooler on average, meaning it will be a dry day humidity wise with abundant sunshine. Our next cold front will usher in Northwest winds overnight and make for a much cooler day tomorrow with highs back below average in the fifties.
Winds will remain under 12kt through the forecast period, shifting to the N/NE after 12/03Z as a weak cold front moves through the region. WV imagery shows the west coast ridge remains highly-amplified, and is undercut by the cut-off low just off the coast of Baja. Long-range models bring a trough thru the central CONUS over the weekend, and hint at a weak front cooling things slightly for Sun, but are not in very good agreement on timing/strength attm. What they do agree on is rain chances remaining slim-to-none, as cold fronts prevent return flow from replenishing the very dry AMS in place.
948 AM EST Mon Dec 11 2017 A clipper system will track across the lower lakes tonight dragging an arctic front across the forecast area.
A cold front will quickly move through late in the period.
202 AM PST Mon Dec 11 2017 High pressure and offshore flow will keep the weather warm and dry for the coming week. A weak low pressure system to our south continues to spin a bunch of high clouds overhead. High pressure aloft will continue to dominate this week and that low pressure system will gradually slide east and take most of the high clouds with it.
High pressure will remain over our region most of the week. Daytime highs will be warmer than normal and nights will be seasonably cool. Interesting mix of temperatures this morning with locations that are calm seeing much cooler readings, while other spots have just enough wind to keep temperatures much higher. Synoptically the ridge of high pressure overhead will remain the dominate feature for the next several days with highs much warmer than normal while overnights will generally be cool due to light winds and mostly clear conditions. High temperatures will gradually cool through the week as the offshore flow weakens and the ridge axis shifts to our west.
620 AM EST Mon Dec 11 2017 High pressure will bring a brief period of fair weather to the Appalachians and central mid Atlantic region to start the work week. However, low pressure moving through the Great Lakes region will push another surge of very cold air into the region on Tuesday with blustery conditions and snow showers in the mountains. Looking at strong cold air advection behind front Tuesday with temperatures starting out steady or slightly warming in the west in the lower to mid 30s, with mid 40s east, then temperatures should crash into the 20s by late afternoon. There will be a burst of winds behind this front with gusts to advisory levels likely in the higher terrain of the Blue Ridge and Alleghanys, but coverage at the moment is borderline in terms of issuing headlines.
406 AM CST Mon Dec 11 2017 Strong upper level low propagating through the region causing all sorts of concerns. Initially, precipitation associated with the vorticity advection across the southern parts of the region is falling as mostly liquid, and leading to icy roads where temperatures are below freezing. With that said, temperatures are rising above freezing which is limiting impacts. Cold front is currently (10z) situated just north of the International border, and set to quickly propagate from north to south through the region this morning. The other concern will be flash freeze potential with moist roads and temperatures above freezing before the fropa. Will monitor, but roads may have enough time to dry before temperatures drop below freezing.
Another active weather pattern is forecast for this week as a mean trough remains in place across the eastern half of North America while mean ridging is mainly over the western half of North America. This southerly flow will advect somewhat warmer air northward, but only enough to moderate the temperatures into the upper 50s to near 60 degrees today. Temperatures should rise modestly from overnight lows in the low to mid 30s to the low 40s due to the strong cold air advection and mostly cloudy sky conditions. Clouds should clear on Tuesday night yielding a very cold night in the low to mid 20s (possibly teens over southern middle TN).
625 AM EST Mon Dec 11 2017 High pressure along with cold and dry air will remain in control of the region today as a dry cold front approaches from the northwest.
Strong and persistent high pressure aloft will remain the dominant weather feature across the western states through at least the middle of this week.
A strong ridge over the Intermountain West will continue to be the main feature dominating our weather much of this week. A freezing fog advisory is in effect in these locations. Patchy fog is also showing up in the lower Klamath River Valley as well as the Scott Valley and in the Christmas Valley over northern Lake County. An offshore front will make its way toward the coastal waters late today and tonight, but will dissipate Tuesday as it runs into the strong ridge.
410 AM CST Mon Dec 11 2017 Deep longwave trough encompasses over half of the entire country, including the local forecast area. The base of this trough will lift slightly today which will allow for a brief day of warming. A strong cold front will accompany this feature, likely pushing through the area Tuesday morning.
/ISSUED 414 AM CST Mon Dec 11 2017/ Slightly warmer temperatures can be expected again today under west to southwest surface winds. This warmup will not last long as the next cold front moves through the area tonight/early tomorrow.
555 AM EST Mon Dec 11 2017 High pressure will build south of the region today.
Weak high pressure over the state will give way to a dry cold front expected to move through the area Tuesday. Two mainly dry short waves and associated cold fronts sweep through the region during the workweek.
Ridging will produce mostly sunny sky. Chattanooga Airport, TN 56 36 42 25 / 0 10 0 0 Knoxville McGhee Tyson Airport, TN 53 36 40 18 / 0 10 10 10 Oak Ridge, TN 54 36 40 20 / 0 10 10 10 Tri Cities Airport, TN 51 32 37 15 / 0 10 30 20.
430 AM MST Mon Dec 11 2017 With an upper level ridge of high pressure to our west, expect mostly sunny skies over the region for the next few days. A ridge of high pressure will be over the region, resulting in dry conditions prevailing.
414 AM CST Mon Dec 11 2017 Slightly warmer temperatures can be expected again today under west to southwest surface winds. This warmup will not last long as the next cold front moves through the area tonight/early tomorrow.
925 AM EST Mon Dec 11 2017 Temperatures have climbed above freezing across the area now, with the patchy to areas of frost melted. Updated the zones to remove the headlines, but rest of forecast is on track with highs expected to reach in to the lower to mid 60s, maybe a few upper 60s south.
300 AM PST Mon Dec 11 2017 High pressure will continue to bring dry conditions along with valley inversions, cold nights, and light winds for the next several days. Inversions may ease by the end of the week as a weak cold front brushes the Oregon border, but no precipitation is expected. Not much change to the forecast as the ridge of high pressure hangs out over the Sierra and western Nevada for most of this week.
Winds will generally be light and vrb tonight ahead of a cold front that is expected to move through South Texas Tue morning. Reinforcing high pressure/cold front is progged to push south across the area by early Tue resulting in slightly cooler highs Tue afternoon as well as a strengthening north wind. No precip is anticipated with the surge of high pressure as the airmass remains dry.
High pressure over the Gulf of Mexico will extend into the Florida Peninsula today into tonight, before weakening a little bit on Tuesday allowing for a dry cold front to move southward from the north and through South Florida Tuesday night. This will allow for the wind flow to remain northerly today into tonight keeping the cooler air in place, before backing to a westerly direction on Tuesday and allowing for a little bit of warmer air to work into South Florida.
556 AM EST Mon Dec 11 2017 An alberta clipper will track just north of Pennsylvania tonight, with a trailing arctic cold front sweeping through the area Tuesday.
Weak high pressure aloft will prevail tonight and Monday.
Threat of showers continues overnight into Monday over the mountains of Western Plumas and the Sierra Nevada as upper low shifts into Nevada.
Strong upper ridge over southeast US with will maintain control on central Indiana weather next few days with summer-like conditions and gradual climb in dewpoints. As deep upper trough in western US shifts east it will begin to zone out upper flow allowing weak short wave troughs to ripple through the flow.
208 PM EDT Sun Jun 11 2017 High pressure will continue to build into the area today maintaining fair weather, with temperatures slightly above normal. Due to increased insulation from the high clouds any fog would likely be patchy. High pressure aloft will slide off the Southeast U.
208 PM EDT Sun Jun 11 2017 High pressure has brought dry and warm weather for the start of the new week. Broad high pressure aloft and southerly boundary layer flow will maintain dry weather and more humid warmth through tonight.
203 PM MDT Sun Jun 11 2017 PAC NW Upper trough will eject toward the region the next 24 hours, supporting a vigorous storm system into the region Monday evening and overnight.
WV imagery shows West Texas and Southeast New Mexico still sitting under an elongated ridge extending NE into the region. A look at vis sat imagery shows very little cu development this afternoon, and convective initiation looks unlikely this afternoon with the ridge as strong as it is. However, the ridge is forecast to weaken over the next few days, w/models sharpening up a dryline each afternoon similar to today's. Beyond Wed, once the west coast trough ejects NE into Canada, the ridge builds north into the SW CONUS, decreasing chances into the extended.
/DL/ Monday night through Sunday: Early evening convection will wain with the loss of daytime heating Monday and wl be left with a rather muggy night with dew points in the lower 70s.
Clear and very warm evening in progress with air temperatures ranging from the lower 80s north to the upper 80s south. Monday will be more of the same, with high temperatures a few degrees higher for many - along with dewpoints also nudging slowly upward will yield heat indices in the lower to mid 90s over much of my SERN forecast area. Lows Mon night will also be a couple degrees warmer than tonight, with mins around 70 in the SE.
Later this evening and through tomorrow high pressure will build into the fa for a temporary dry period. Slightly cooler and drier air will accompany the high so temperatures will be a few degrees cooler tonight and Monday but still at or above average.
With upper ridge building over the eastern U. Reading this afternoon will peak in the lower 90s in the Susq Valley and in the 80s elsewhere. Monday will be more of the same, with high temperatures a few degrees higher for many - along with dewpoints also nudging slowly upward will yield heat indices in the lower to mid 90s over much of my SERN forecast area. Lows Mon night will also be a couple degrees warmer than tonight, with mins around 70 in the SE.