Aikyam-Lab/Synoptic-Bench huggingface dataset:
336 PM MST Mon Dec 2 2024 - Dominant ridge holds in place through most of the upcoming week. The blocking feature settled along the west coast will continue to deflect weather systems well into Canada, and keeps the cold winter air away from the area. West of the Divide, remaining cold pools and remaining surface snow cover will keep temperatures right near normal, with highs right around freezing and lows in the upper single digits to middle teens. Models continue to note the ridge finally breaking out of its position near this weekend, opening WY up to a more active storm track from Canada. The ridge shifts west off the PacNW coast, which puts the more active pattern into our area.
549 PM CST Mon Dec 2 2024 - Generally dry and warmer than normal weather is favored through much of this forecast. (This evening through Tuesday night) A backdoor cold front has made its way into the northeastern Panhandles resulting in a chilly day across that area, but the front will retreat through the rest of the day. out of the west-southwest Tuesday night, and these downsloping winds will result in relatively warm lows ranging from the low-30s to around 40 degrees.
Low temperatures will again drop into the low to mid 20s by early Tuesday morning.
High pressure over the region will produce dry weather through at least the middle of the week, with areas of clouds and fog in the interior valleys and sunshine elsewhere.
(This evening through Tuesday night) A deep longwave upper level trough encompasses the entire eastern half of the country with the N/S apex roughly lined up with Florida. Slightly warmer temps expected overnight due to both an incremental increase in 500mb heights and thin cirrus deck moving across the southern half of LA.
247 AM CST Tue Dec 3 2024 - The forecast remains dry through the weekend, largely driven by upper level ridging.
***UPDATE*** Partly cloudy skies persisted today, due to high clouds associated with an approaching weak low pressure system.
Temperatures as of 2 AM across the island chain were about 2 degrees cooler than last night and on their way for a morning low in the lower 60s this morning. As the high slides closer to the coastline and our winds clock around more to the northeast and east, we will actually see a reinforcing shot of cooler air.
1020 PM CST Mon Dec 2 2024 Updated at 1017 PM CST Mon Dec 2 2024 - Cooler temperatures tonight into Tuesday behind a cold front.
Clear skies this morning across southeast Arizona with a broad ridge axis extending from New Mexico to Idaho with weak troughing along the California coast.
(The rest of this afternoon ) Cold front continues to push southeastward across the area this afternoon with temperatues in the 40s to the north despite full sun. Much cooler lows tonight as winds subside and skies remain mostly clear.
934 PM PST Mon Dec 2 2024 High pressure will bring generally nice weather through the week. DialH (This afternoon through Tuesday) Mostly clear skies are observed across the Bay Area and Central Coast as the stable ridge pattern becomes entrenched in an omega block. Some of the warmer spots may hit 70, including San Jose.
1156 PM CST Mon Dec 2 2024 Evening RAP/upper air analysis & GOES East water vapor imagery indicate longwave troughing east of the Rockies while deep ridging is situated over the Four Corners into the Intermountain West. Carry your coat as wind chills could be blustery, as low as upper teens in Hwy 82 corridor to below freezing to the south (19-30F). Temperatures are expected to bottom out at or below freezing for the vast majority of sites across the CWA in the wake of the cold front that traversed the area early today. Luckily this continuous cold air advection will not bring particularly fast winds, with the highest wind speeds being in the low teens.
1144 PM CST Mon Dec 2 2024 (This evening through Tuesday night) A deep longwave upper level trough encompasses the entire eastern half of the country with the N/S apex roughly lined up with Florida. Slightly warmer temps expected overnight due to both an incremental increase in 500mb heights and thin cirrus deck moving across the southern half of LA.
Cold temperatures today with high pressure building in from the northwest. As high pressure brings a cold, dry surface airmass to the region today, clearing sky conditions are anticipated by the afternoon with afternoon max temperatures about 15 to 20 deg F below normal.
1224 AM MST Tue Dec 3 2024 High pressure has settled over the region and this will keep the weather across eastern Idaho very quiet over the days ahead.
After topping out near 70 earlier in the day, temperatures are now in the mid 60s with dew points in the lower 50s. Conditions in the morning will be similar or slightly cooler than the previous morning. Reinforcing high pressure is consolidating as it swings through the southeastern United States.
915 PM PST Mon Dec 2 2024 We have issued another Freezing Fog Advisory for parts of northeast CA and northwest/far western NV, similar to the previous few nights.
- Ridging remains stagnant over the region through the remainder of the week. A large ridge will keep these conditions in place through much of the week. Slightly cooler temperatures are possible in some locations west of the Divide where snow cover is remaining. These cooler temperatures may lead to some isolated areas of fog Tuesday morning, especially across portions of Jackson Hole. The area of potent ridging that is keeping dry and mild conditions in place looks to gradually break down over the weekend. A change in the weather pattern is looking more likely, with chances for precipitation and cooler more seasonable temperatures arriving by the end of the weekend.
1058 PM CST Mon Dec 2 2024 - Generally dry and warmer than normal weather is favored through much of this forecast. (This evening through Tuesday night) A backdoor cold front has made its way into the northeastern Panhandles resulting in a chilly day across that area, but the front will retreat through the rest of the day. out of the west-southwest Tuesday night, and these downsloping winds will result in relatively warm lows ranging from the low-30s to around 40 degrees.
A strong inversion has kept stratus and fog confined mainly to the Lower Treasure Valley today. The fog is expected to clear in Boise by around 11 AM, though much of the Lower Treasure Valley, as well as parts of western and southern Ada County - including Meridian, Kuna, and Eagle - may remain affected.
High pressure will bring generally nice weather through the week. DialH (This afternoon through Tuesday) Mostly clear skies are observed across the Bay Area and Central Coast as the stable ridge pattern becomes entrenched in an omega block. Some of the warmer spots may hit 70, including San Jose.
1106 PM CST Mon Dec 2 2024 Cold temperatures are forecast for the Midsouth tonight, following an evening cold frontal passage.
After a rather cold start to the morning, continued north flow will set up moderate cold air advection, keeping afternoon highs in the low to mid 60s today despite the sunny skies.
947 PM MST Mon Dec 2 2024 - Dominant ridge holds in place through most of the upcoming week. The blocking feature that settled along the West Coast will continue to deflect weather systems well into Canada, and keeps the cold winter air away from the area. West of the Divide, remaining cold pools and remaining surface snow cover will keep temperatures right near normal, with highs right around freezing and lows in the upper single digits to middle teens. Models continue to note the ridge finally breaking out of its position near this weekend, opening WY up to a more active storm track from Canada. The ridge shifts west off the PacNW coast, which puts the more active pattern into our area.
The winds will continue through the overnight hours which will promote good mixing at the lower levels which will keep near to above freezing tonight. Subfreezing overnight lows look to return Wednesday night behind the frontal passage.
542 AM CST Tue Dec 3 2024 - Much warmer today, with highs in the upper 30s to lower 40s. - A cold front Wednesday morning will bring in 30-40 mph gusts area-wide, cooling temperatures, and the possibility of flurries or sprinkles in northeast Nebraska (10% chance).
Unseasonably cold air remains in place before a brief warm-up mid- week and a return to cooler temperatures. As of 936 AM EST Tuesday: Radar returns are scant across all but the northern Blue Ridge, where isolated flurries may be ongoing still.
This high will push off to the east today and warm-air advection will quickly develop by this afternoon with southerly wind of 15 mph and gusts to 25 mph. Even warmer temperatures are likely tomorrow, at least for southern portions of the area, before another cold front swings through.
As a trough sits over much of the eastern United States, most of the western United States is under a ridge blocking pattern, which is keeping current weather conditions largely the same over the rest of the week and into the weekend. Near the end of the week, the ridge deepens, bringing in some cooler northern air and lowering temperatures.
This trend to warmer temperatures in the short term will become stalled as we head into Wednesday.
554 AM CST Tue Dec 3 2024 - Another cold day is on tap today, but much warmer weather is expected on Wednesday accompanied by gusty west winds.
517 AM CST Tue Dec 3 2024 - The forecast remains dry through the weekend, largely driven by upper level ridging.
Southwesterly winds will gradually increase as the broad area of high pressure slides south and a Canadian low progresses southeast towards the northern Great Lakes region. This will allow temperatures to climb roughly 5 to 10 degrees warmer than yesterday, yet still 5 to 10 degrees below average for early December.
A weak low pressure system situated over the North Bay is bringing mid-level clouds to Northern California, stratus can be seen developing along the Big Sur Coast and spreading northward, and a mid-level cloud shield associated with a weak low pressure system off the California/Mexico border is extending into the Desert Southwest.
- Windy conditions on Wednesday with a strong cold front moving through Wednesday evening.
509 AM CST Tue Dec 3 2024 (Today through Wednesday Night) To begin the period, calm and dry conditions will prevail Tuesday under high pressure. Temperatures are expected to be seasonable for this time of the year with highs in the low 40s to upper 50s and overnight low temperatures dropping into the mid 20s to upper 30s.
- A cold front will move through tonight into Wednesday, bringing wind gusts of 30-40+ mph and falling daytime temperatures on Wednesday.
413 AM CST Tue Dec 3 2024 - Much warmer today, with highs in the upper 30s to lower 40s. - A cold front Wednesday morning will bring in 30-40 mph gusts area-wide, cooling temperatures, and the possibility of flurries or sprinkles in northeast Nebraska (10% chance).
(Today through Wednesday) 500mb analysis shows a broad longwave trough just off the east coast. The boundary should continue pushing southward as strong high pressure builds in from the NW.
307 AM MST Tue Dec 3 2024 - Temperatures noticeably warmer over the plains today; a bit cooler in the mountains.
247 AM MST Tue Dec 3 2024 - Today will be a great day with highs in the 50s and 60s! - Late Wednesday night, we are watching the potential for more freezing fog in the eastern CWA. Unfortunately, like all good things, a cold front ruins it. Northwesterly, cooler winds will follow this cold front. Tomorrow, another high pressure system will begin moving down from Alberta Canada in the mid-day, helping more cool air move into the region. As a result, we will be about 10 degrees cooler than today. Tomorrow night, the high will cause weak easterly winds to occur over the eastern half of the CWA, creating a favorable environment for freezing fog, yet again. Additionally, the weaker winds will allow temperatures to cool back down into the lower 20s.
608 AM EST Tue Dec 3 2024 Cooler air from out of the north and northwest will push into the forecast area today as high pressure builds in following the passage of the cold front, leading to a continuation of the pattern or dry clear weather with overnight and early morning frost/freeze developments throughout the region. High temperatures for today will range in the 50s with warmer temperatures occurring further southward. Overnight low temperatures will drop down into the upper to mid 20s for inland areas and in the lower to upper 30s for coastal areas and along the St Johns River.
Updated at 340 AM CST Tue Dec 3 2024 - Much warmer temperatures Wednesday ahead of the next cold front.
A warmer airmass will intrude across western South Dakota spilling into the southwest resulting in this warm up. Conditions will remain fairly breezy this afternoon as a tight pressure gradient from an upper low passes across Saskatchewan. Westerly winds will also support warmer temperatures statewide. A cold front is forecast to move through the state late tonight drawing a colder airmass south. Deterministic models have the cold front move through the region this afternoon.
Updated at 245 AM CST Tue Dec 3 2024 - Cooler temperatures today behind a cold front.
There's a deep trough over the eastern CONUS, quasi-zonal flow across South Texas and ridging across the Rockies with a developing low just off the coast of Northern, CA. A warm front moving from South to north across our CWA tonight will promote a moderate 45-65% chance of rain/showers mainly tonight across the CWA. Tomorrow expect warmer temperatures in the low to mid 70s.
Agree with the evening meteorologist that there will still be fog/freezing fog in west side valleys and near Klamath Falls until the late morning. The stronger ridge present will stay on the west coast through Wednesday, so the Air Stagnation Advisory will continue until then.
Snow totals up to 7 inches possible in the higher terrain. Totals of 4 to 7 inches are expected at the tip of the Arrowhead by Wednesday morning, with the highest at higher elevations. On Wednesday, the low center will have passed, but northwest flow and strong cold air advection will lead to multiple phenomena.
Low clouds and fog are struggling to form under the higher level clouds for Ventura and LA coast, but remain a possibility this morning.
Upper-air pattern continues to show large troughing over the eastern CONUS with some weak ridging building in across northern Mexico into western Texas. In the wake of the cold front, temperatures will be around 5 degrees below normal with highs only ranging from upper 40s across our far northern zones to the lower 60s across deep east Texas and then the 50s elsewhere. Lows tonight will range from around 30 degrees to the lower 40s. At the same time, another arctic cold front will begin moving southward through the Midwest. As the cold front moves through our region, it will usher the showers and thunderstorms out of our region to the southeast into Wednesday night.
Dry weather is expected into tonight beneath high pressure. Given surface temperatures below freezing, will need to watch for freezing drizzle potential. Otherwise, Wednesday will be warmer with highs in the 40's with breezy southwest winds. Behind the northwest flow aloft, high pressure centered atop the region pulls eastward.
353 AM MST Tue Dec 3 2024 - Today will be a great day with highs in the 50s and 60s! - Late Wednesday night, we are watching the potential for more freezing fog in the eastern CWA. Unfortunately, like all good things, a cold front ruins it. Northwesterly, cooler winds will follow this cold front. Tomorrow, another high pressure system will begin moving down from Alberta Canada in the mid-day, helping more cool air move into the region. As a result, we will be about 10 degrees cooler than today. Tomorrow night, the high will cause weak easterly winds to occur over the eastern half of the CWA, creating a favorable environment for freezing fog, yet again. Additionally, the weaker winds will allow temperatures to cool back down into the lower 20s.
555 AM CST Tue Dec 3 2024 (Today) A broad longwave trough in the mid/upper-levels remains in place across eastern North America this morning, with a well-defined vort max embedded within the trough currently crossing the southern Appalachians. Northerly winds around 10 MPH will continue to drive a slightly modified arctic airmass southward into the region as the center of the parent anticyclone builds southeastward into southern MO, with early morning wind chill values in the 15-20F range.
The western CONUS ridging has shifted slightly eastward towards the central plains as the upper troughing across the Great Lakes and eastern seaboard weakens temporarily.
Consequently, temperatures will be close to persistence or a tad warmer for the vast majority of the forecast area.
While the upper level pattern itself remains somewhat active as a closed low moves across SoCal through midweek, interior NorCal is expected to remain primarily influenced by ridging aloft.
408 AM CST Tue Dec 3 2024 - Much warmer today, with highs in the upper 30s to lower 40s. - A cold front will bring in 30-40 mph gusts area-wide, cooling temperatures, and the possibility of flurries or sprinkles in northeast Nebraska (10% chance).
446 AM CST Tue Dec 3 2024 Updated at 441 AM CST Tue Dec 3 2024 - Cooler temperatures today behind a cold front.
The resultant strong downslope flow will slide southward and eastward through central and eastern Montana to begin eroding the the cold surface air air mass over the high plains.
239 AM PST Tue Dec 3 2024 A low pressure system moving slowly inland across southern California today and Wednesday will bring cooling for the coast and valleys and deepening of the marine layer with coastal slow clouds and fog spreading into portions of the western valleys for tonight into Wednesday morning.
540 AM CST Tue Dec 3 2024 Sunny and cold weather is expected today as high pressure moves across the region. Temperatures will moderate some on Wednesday, but rain showers will develop mainly over north Mississippi ahead of another cold front for Wednesday afternoon and evening.
Unseasonably cold air remains in place before a brief warm-up mid- week and a return to cooler temperatures. Temperatures will warm above freezing in these areas between 10 and 11 AM.
The more important aspect is using caution on area roadways -- especially bridges and overpasses -- through the rest of the night. Everyone will start out in the low 20s and with cloud cover not expected to start waning until late morning or early afternoon, temperatures will be slow to recover and improve any poor road conditions. Wind gusts of 25-30 mph will make afternoon highs feel A LOT cooler.
428 AM MST Tue Dec 3 2024 - Temperatures noticeably warmer over the plains today; a bit cooler in the mountains.
412 AM CST Tue Dec 3 2024 Today through tonight: A dry cold front has just about pushed through the forecast area early this morning, and this is being followed by another round of cold and dry polar air. Temperatures will be significantly below climate normals with readings struggling to climb out of the 40s over much of the area, and lows tonight should dip below freezing.
(Rest of Today) High pressure has now moved into IL, MO and AR this morning with cold air penetrating to the Gulf Coast along the cold front. Highs in the upper 30s to around 40 look good with wind chills in the teens this morning with north winds diminishing this afternoon as the high settles east into KY, TN and AL.
- Seasonable temperatures continue through mid-week before a weak cold front late Wednesday brings cooler temperatures through the end of the week. (Today and tonight) A weak backdoor cold front was making slow but steady progress across the South Plains at 2 AM ahead of much lower dewpoints in the 20s and 30s in our eastern counties. Cool surface ridging will have departed by this evening ahead of 10- 15 mph SW winds which, oddly enough, will be anything but dry as they tap dewpoints in the 40s currently pooling across eastern NM and far W TX. This along with steady mid and upper ridging holding firm over the region should keep measurable precip at bay.
High pressure aloft will allow for continued dry conditions with morning fog and low stratus. The upper ridge will break down towards the end of the week as the next storm system approaches, bringing in the next chance for widespread precipitation across the region late this week and through the weekend.
Sunny and cold weather is expected today as high pressure moves across the region. Temperatures will moderate some on Wednesday, but rain showers will develop mainly over north Mississippi ahead of another cold front for Wednesday afternoon and evening.
412 AM EST Tue Dec 3 2024 (Today through Wednesday) 500mb analysis shows a broad longwave trough just off the east coast. The boundary should continue pushing southward as strong high pressure builds in from the NW.
250 AM MST Tue Dec 3 2024 KEY MESSAGES: - Ridge of high pressure through mid week causing stable conditions with valley fog and stratus.
1022 AM MST Tue Dec 3 2024 - Temperatures noticeably warmer over the plains today; a bit cooler in the mountains.
High temperatures will be in the mid to upper 40s north of I-40, and the lower 50s south of there.
921 AM PST Tue Dec 3 2024 Cooler conditions are expected through Wednesday with a deeper marine layer.
Under increasing cloudiness, highs across the Midsouth will range from the lower to mid 50s Wednesday afternoon. An Arctic cold front will pass through the Midsouth Wednesday night.
as the next cold front approaches Middle Tennessee.
This afternoon a mid level trough was located over the Western states and another trough over the east with a northwest flow aloft in between. Lows tonight will mainly be in the lower 30s. This will push another cold front south across the Plains during the day and moving into northern Kansas by late afternoon. Prior to the cold front temperatures will warm into the 50s as cold advection will hold off until the evening hours.
1006 AM MST Tue Dec 3 2024 - Today will be a great day with highs in the 50s and 60s! - Late Wednesday night, we are watching the potential for more freezing fog in the eastern CWA. Unfortunately, like all good things, a cold front ruins it. Northwesterly, cooler winds will follow this cold front. Tomorrow, another high pressure system will begin moving down from Alberta Canada in the mid-day, helping more cool air move into the region. As a result, we will be about 10 degrees cooler than today. Tomorrow night, the high will cause weak easterly winds to occur over the eastern half of the CWA, creating a favorable environment for freezing fog, yet again. Additionally, the weaker winds will allow temperatures to cool back down into the lower 20s.
219 PM EST Tue Dec 3 2024 High pressure shifts south of the Ohio Valley overnight before low pressure takes over for the end of the week. Wednesday will feature a brief warm up followed by a strong cold front Wednesday night with the chance for snow showers.
1029 AM CST Tue Dec 3 2024 (Rest of Today) High pressure has now moved into IL, MO and AR this morning with cold air penetrating to the Gulf Coast along the cold front. Highs in the upper 30s to around 40 look good with wind chills in the teens this morning with north winds diminishing this afternoon as the high settles east into KY, TN and AL.
Latest obs and webcams show fog decreasing this morning in the Upper Treasure Valley but continuing in the Lower Treasure Valley. , but keep it going until 2 PM MST in the Lower T.
A weak boundary will supply a N/NW wind shift Wednesday, and weak high pressure will build over SW KS through the afternoon, but models show little if any cooling.
1151 AM CST Tue Dec 3 2024 - The forecast remains dry through the weekend, largely driven by upper level ridging.