Aikyam-Lab/Synoptic-Bench huggingface dataset:
Today through Wednesday night A low pressure system and cold front from the Pacific NW will progress eastward across northern NV. Snow amounts look to be around 1 inch or less for the lower valleys with 1 to 3 inches expected for the higher elevation valleys. Daytime highs will be in the low to mid 30s with overnight lows in the single digits to teens under mostly clear skies.
The warmest day will likely be today with highs in the low 80s from Tucson south and westward.
A low pressure system remains offshore and will gradually move south and east through Tuesday. High pressure then returns for the next several days bringing a less active pattern. However, temperatures will begin to trend cooler into the weekend and shower chances will return.
A low pressure system is forecast to bring rain chances to the Mid-South on Wednesday with a chance for some thunder across the southern portions of the region.
531 AM CST Tue Nov 26 2024 (Today through Wednesday Night) After the record high afternoon temperatures yesterday, a cold front in the evening brought temperatures down closer to seasonal. Low temperatures tonight will be about 5-10 degrees warmer than last night with areas north of I-10 in the low to mid 50s, and then mid to upper 50s south of I-10 (and low 60s along the coast). The temperatures continue to rise Wednesday afternoon back into the low to mid 80s for much of the region with record highs being within a few degrees.
Rainfall rates have been from one quarter to one third of an inch at times in the Sierra Nevada Heavy snowfall continues across the high elevations of the Sierra where a Winter Storm Warning is in effect until 4 PM PST Wednesday. The upper low will shift inland across the Oregon/California border today as an open wave then dive southeast over the Great Basin tonight. A rex block type pattern sets up across the eastern Pacific on Thanksgiving with a weak upper low under a ridge.
(Today through Wednesday Night) Drier and much cooler airmass contd to advect into the Natural State early this mrng, following the passage of a CDFNT on Mon. With the high center retreating to the east, south and southeast winds will return.
A cold front is currently moving across the area this morning and currently extends across the Pine Belt area. High pressure and cool/dry condition will build across the area today, with highs ranging from the upper 50s across the Delta to near 70 in the Pine Belt Region.
Upper level flow remains zonal through Wednesday afternoon while a mid level trough pushes from the southern Rockies through the period. Surface winds are forecast to be from the south and southwest as high pressure moves into the middle Mississippi Valley and a developing low across the central Rockies pushes to the southeast. Overnight lows range from the lower 40s across the northwest part of Val Verde County to mid 50s across the coastal Plains. A weather pattern chance is on the way for Wednesday night into the overnight hours as a cold front pushes across the local area. The dry cold front is forecast to produce 10 to 20 mph with gusty winds of 30 to 40 mph.
(Rest of today through Wednesday) High pressure remains in control through mid week, with westerly mid/upper level flow keeping a dry airmass in place. High temps today and Wednesday will generally be in the lower 80s.
1123 AM CST Tue Nov 26 2024 (Today through Wednesday Night) After the record high afternoon temperatures yesterday, a cold front in the evening brought temperatures down closer to seasonal. Low temperatures tonight will be about 5-10 degrees warmer than last night with areas north of I-10 in the low to mid 50s, and then mid to upper 50s south of I-10 (and low 60s along the coast). The temperatures continue to rise Wednesday afternoon back into the low to mid 80s for much of the region with record highs being within a few degrees.
157 PM EST Tue Nov 26 2024 A cold front will move offshore by late afternoon. Cooler high pressure will follow tonight and Wednesday. Low pressure will approach from the west Thanksgiving Day. The associated cold front will move through on Thanksgiving Night.
122 PM EST Tue Nov 26 2024 Morning clouds will decrease as high pressure begins to build into the area today. This high will offer dry weather today and tonight.
Upper level low pressure will move across the forecast area tonight into early tomorrow morning. Little accumulation is expected in the valleys with several inches possible across the high terrain locations. A moist upper level low pressure system will make its way eastward during the evening and overnight hours across northern and central Nevada. Accumulations of a half inch or less is expected in the valley locations with another inch or three across the higher terrain locations.
Based on these contributing factors, trended on the warm side of guidance, with lows falling into the lower 40s northeast to upper 40s and lower 50s southwest overnight before the arrival of clouds puts a halt to further cooling. This pattern will continue into the day Wednesday as a warm front slides from south to north, with dew points spiking further while temperatures soar into the lower 70s north to upper 70s south.
By Wednesday early morning, a broad low pressure trough is progged to approach the Lower Mississippi River Valley. Additionally, low ceilings will increase across the region as another cold frontal boundary approaches the region.
Otherwise, with the area of low pressure to our south now transitioning inland, lingering showers will be on the decrease into tonight. High pressure will build across the region Wed, lasting into the weekend. As such, will trend to mostly dry and but cooler weather during that time, with areas of overnight/morning fog/low clouds.
1109 AM CST Tue Nov 26 2024 (Rest of today through Wednesday) A nice afternoon sets up today as high pressure builds over middle TN pushing any remaining cloud cover off to the east.
An area of low pressure will pass north of Arizona, bringing wind conditions today and Wednesday, along with chances for rain and high-elevation snow showers. Drier/warmer conditions expected to return for the second-half of the week. Clouds continue to increase over northern Arizona ahead of an incoming trough. The mean trough axis moves through Utah and into Colorado on Wednesday. Given the track of the low is well to the north, moisture will be fairly limited with this system. Thus, the majority of the area will see rain with any accumulating snow limited to the highest elevations.
- Below normal temperatures will continue through the weekend with highs expected to drop below freezing from Thanksgiving day onwards. A short wave trough is expected to pass over the area bringing low (<20%) probabilities for light snow Wednesday morning through the afternoon. It will, however, bring south another push of cold air advection that will reduce our highs even further, into the low to mid 20s north of I-90, and mid to upper 20s south.
- Multiple quick moving weak clipper systems will move through the region over the next few days bringing light snow showers and cooler temperatures.
High pressure is situated directly over the region this afternoon. This high will continue to bring cool and dry weather the rest of today and tonight with temperatures generally below normal.
1119 AM CST Tue Nov 26 2024 (Today through Wednesday Night) Drier and much cooler airmass contd to advect into the Natural State early this mrng, following the passage of a CDFNT on Mon. With the high center retreating to the east, south and southeast winds will return.
A cold front will bring showers and thunderstorms to the area by Wednesday evening through early Thanksgiving morning.
1123 AM EST Tue Nov 26 2024 Morning clouds will decrease as high pressure begins to build into the area today. This high will offer dry weather today and tonight.
A broad upper trough will continue to dig into the TN/Ohio River Valley this afternoon. This has resulted in a surface boundary moving across the CWA, allowing for drier air and slightly cooler temperatures. A cold front is currently moving across the area this morning and currently extends across the Pine Belt area. High pressure and cool/dry condition will build across the area today, with highs ranging from the upper 50s across the Delta to near 70 in the Pine Belt Region.
Surface analysis places a sprawling, elongated, and weakening area of high pressure stretching from the central Gulf of Mexico eastward to the island of Bermuda. Geopotential height tendencies are consistent with the analysis, with modestly falling heights in the low-levels, underneath subtly rising heights further aloft sampled over the past twelve hours. From synopsis, moderate northeast breezes will slowly slacken this afternoon and into tonight, as a high pressure system lingering over the Florida Peninsula weakens, while a broad low develops over the southeastern US.
Updated at 201 PM CST Tue Nov 26 2024 - Low-end windy conditions are expected on Wednesday across the Caprock, with a cold front moving through during the afternoon.
An area of low pressure will pass north of Arizona, bringing wind conditions today and Wednesday, along with chances for rain and high-elevation snow showers. Drier/warmer conditions expected to return for the second-half of the week. Clouds continue to increase over northern Arizona ahead of an incoming trough. The trough that will slide through the Great Basin Region today, before reaching Utah on Wednesday, continues to weaken and become largely less impactful for our CWA. With the continued zonal flow across Arizona, temperatures have remained on the warmer side resulting in snow levels generally above 9000'. These warmer conditions should keep the primary precipitation type as rain at least South-southwest winds 10-20 kts gusting to 30 kts through midday Wednesday, then light north through east windsthrough today.
Updated at 104 PM CST Tue Nov 26 2024 - Current warming trend ends on Wednesday with the arrival of the next cold front. - Another cold front arrives for the weekend, bringing progressively colder air with it and a chance for wintry precip to the north and east of the area. Lacy (Wednesday through Tuesday) An upper low centered near the OR/CA border is transitioning into an open wave that will march east across the country over the next few days. As this occurs, a cold front will slide southeast across the region during the day, making for a sharp gradient in high temps across the forecast area from north to south.
An area of low pressure will pass north of Arizona, bringing wind conditions today and Wednesday, along with chances for rain and high-elevation snow showers. Drier/warmer conditions expected to return for the second-half of the week. Clouds continue to increase over northern Arizona ahead of an incoming trough. The trough that will slide through the Great Basin Region today, before reaching Utah on Wednesday, continues to weaken and become largely less impactful for our CWA. With the continued zonal flow across Arizona, temperatures have remained on the warmer side resulting in snow levels generally above 9000'. These warmer conditions should keep the primary precipitation type as rain at least through today.
High temperatures will climb back up into the low to mid 80s. Another cold front will be moving into the area Wednesday night.
1115 AM EST Tue Nov 26 2024 Gusty west winds will occur in the wake of a cold front today.
- Cold front Wednesday brings potential for light precipitation (drizzle and/or flurries) Wednesday night.
- High confidence on much below normal temperatures by the end of the week through the weekend, with highs in the lower teens to 20s and lows in the single digits above zero to the single digits below zero. The clipper low out over southern Alberta/Saskatchewan is progged to sweep east-southeast through the Dakotas/Minnesota later tonight into Wednesday, dragging an inverted surface trof reflection along with it.
304 PM EST Tue Nov 26 2024 A weak cold front will cross the area tonight, followed by slightly cooler and drier high pressure Wednesday.
Temperatures have remained a degree or two cooler than previous forecast and have kept snow levels lower. Today through Wednesday night A low pressure system and cold front from the Pacific NW will progress eastward across northern NV. Snow amounts look to be around 1 inch or less for the lower valleys with 1 to 3 inches expected for the higher elevation valleys. Daytime highs will be in the low to mid 30s with overnight lows in the single digits to teens under mostly clear skies.
202 PM EST Tue Nov 26 2024 High pressure will quickly build across the area through Wednesday.
(Rest of today through Wednesday) A nice afternoon sets up today as high pressure builds over the middle TN pushing any remaining cloud cover off to the east.
1051 AM CST Tue Nov 26 2024 (Today through Wednesday) A cold front is currently making its way through Deep South Texas, which will lower today's high temperatures to the upper 70s throughout the Valley with low temperatures tonight getting down into the upper 50s/lower 60s. However, the cooler weather will not last. On Wednesday, highs are expected to get back up to the upper 80s/lower 90s, as the front lifts out of the area and winds shift back to a southerly direction, slightly increasing in speed as a tighter pressure gradient sets up ahead of a stronger cold front expected later in the week.
A ridge is currently sitting right overhead bringing us quiet weather and clear skies. This ridge will start to shift out into the Atlantic on Thanksgiving as our next frontal system start to push through the southeast. This will result in Thanksgiving being the warmest day we have seen in about a week with most of us getting into the lower 80's.
Starting tomorrow, throughout the day, a cold front will move south through the combined Panhandles. Meanwhile, back upstream to the northwest across the central Rockies, a slowly waning amplitude H500 perturbation will traverse ESE near the Four Corners Region by early tomorrow afternoon, in the wake of the surface cold front.
Updated at 225 PM CST Tue Nov 26 2024 - Cold front tomorrow with the potential for light precipitation Wednesday night.
(Tonight through Wednesday Night) Issued at 133 PM CST Tue Nov 26 2024 Cool temperatures in the wake of a cold front have been the story today, along with some widespread low and mid level clouds. Winds become light Wednesday night with lows dropping into the 50s and 60s as the next cold front begins to move through the area near sunrise.
124 PM CST Tue Nov 26 2024 - Light rain potential (20-55% chance) Wednesday afternoon and evening with the highest chances across central Missouri.
Drier and cooler air sets in behind a weak cold front pushing south through our area by early tomorrow morning. (This evening through Wednesday) A steady stream of clouds with occasional light rain/drizzle will persist through the remainder of today and this evening across the Central Coast, as a cooler and drier airmass works its way south from NorCal. Overnight lows tonight will be about 5-10 degrees cooler than what we saw early this morning. With less cloud cover tomorrow, we'll see highs increase only slightly from today, mainly in the low/mid 60s, upper 50s along the coast.
- Canadian cold front and areas of light snow expected Wednesday night into Thanksgiving day.
Flow turning northerly at the surface has started to advect much cooler and drier air across the area. Models suggest near freezing conditions all the way out to the coast. NBM continues to signal high chances (60 to 80% chance) of near freezing conditions all the way to the coast. Freezing conditions are possible (especially outside of sheltered valleys) but dewpoints will need to be watched closely this evening to determine the likelihood of freezing conditions.
Highs expected to return to the low 70s as early as Wednesday with one to two degrees of warming each day into the weekend.
A cold front will move through the region tomorrow which will allow temperatures across south central and southeastern Kansas to warm into the low to mid 50s while central Kansas will only warm into the lower 40s.
(Rest of today through Wednesday) A nice afternoon sets up today as high pressure builds over middle TN pushing any remaining cloud cover off to the east.
Lacy (Wednesday through Tuesday) An upper low centered near the OR/CA border is transitioning into an open wave that will march east across the country over the next few days. As this occurs, a cold front will slide southeast across the region during the day, making for a sharp gradient in high temps across the forecast area from north to south.
A warm front is expected to lift northward across the Mid-South during the day tomorrow, bringing temperatures into the upper 50s and 60s areawide. A cold front will bring showers and thunderstorms to the area by Wednesday evening through early Thanksgiving morning.
Ridging overhead will keep winds generally below 10 knots through Thanksgiving.
555 PM CST Tue Nov 26 2024 Updated at 541 PM CST Tue Nov 26 2024 - Cold front tomorrow with the potential for light precipitation Wednesday night.
519 PM CST Tue Nov 26 2024 (Tonight through Wednesday Night) Issued at 133 PM CST Tue Nov 26 2024 Cool temperatures in the wake of a cold front have been the story today, along with some widespread low and mid level clouds. Winds become light Wednesday night with lows dropping into the 50s and 60s as the next cold front begins to move through the area near sunrise.
515 PM CST Tue Nov 26 2024 (Rest of today through Wednesday) A nice afternoon sets up today as high pressure builds over middle TN pushing any remaining cloud cover off to the east.
541 PM CST Tue Nov 26 2024 - Light rain potential (20-55% chance) Wednesday afternoon and evening with the highest chances across central Missouri.
538 PM CST Tue Nov 26 2024 (This afternoon through Wednesday) Winds have shifted to the northwest across Central Alabama, indicating that the cold front is moving east of the area. Temperatures shouldn't rise too much more as cooler air filters in behind the front, so expect highs to range from the mid/upper 50s northwest to upper 60s southeast. High pressure will build across the Ohio Valley tonight with temperatures briefly cooling down into the 30s in the north and 40s south by tomorrow morning. Warmer conditions are expected with highs ranging from the mid 60s to lower 70s, and cloud cover will gradually increase throughout the day.
Quiet weather is expected across the forecast area tonight, as high pressure at the surface centered near the Mid-South sits in control of our weather. Meanwhile aloft, zonal flow has setup across the Lower Mississippi River Valley. By Wednesday early morning, a broad low pressure trough is progged to approach the Lower Mississippi River Valley. Additionally, low ceilings will increase across the region as another cold frontal boundary approaches the region.
602 PM CST Tue Nov 26 2024 Updated at 546 PM CST Tue Nov 26 2024 - Low-end windy conditions are expected on Wednesday across the Caprock, with a cold front moving through during the afternoon.
Expect high pressure to gradually build across the region on Wednesday lasting through the weekend. Thus impacts will primarily revolve around area of overnight/morning fog and cooler low temperatures.
High pressure ridging builds in on Wednesday bringing dry and mostly sunny conditions through the holiday weekend.
A vertically stacked closed low system will continue to rotate near Hudson Bay through much of the forecast period, prompting longwave troughing to amplify over much of the CONUS. At the surface, high pressure will slide southward into the Northern Plains, bringing colder air and below normal temperatures to the Northland for the weekend. The best chance of any accumulation will be near Lake of the Woods as cold air flows across the warmer lake waters.
750 PM EST Tue Nov 26 2024 Gusty west winds in the wake of a cold front will subside tonight.
923 PM EST Tue Nov 26 2024 High pressure will quickly build across the area through Wednesday.
Sfc winds have also become light/var, which should help temps fall more into the lower/mid 30s overnight.
658 PM EST Tue Nov 26 2024 Slightly cooler and drier high pressure will build in behind cold front tonight into Wednesday.
The warmest day will likely be today with highs in the low 80s from Tucson south and westward. An area of high pressure is also centered to our south, which has led to temperatures 2-6 degrees above this time yesterday. Highs from Tucson westward will be in the low 80s this afternoon. During the latter half of the work week into the weekend a longwave trough will dominate the eastern 2/3 of the country with the Gulf of Alaska ridge moving over the Pacific Northwest. Ensembles also show a weak closed low undercutting the ridge off the coast of California and Baja California. This low slowly moves eastward into the weekend, but still uncertainty with how quickly it moves east.
624 PM EST Tue Nov 26 2024 (Rest of today through Wednesday) High pressure remains in control through mid week, with westerly mid/upper level flow keeping a dry airmass in place. High temps today and Wednesday will generally be in the lower 80s.
316 AM EST Wed Nov 27 2024 High pressure in place across the region today. A complex low pressure system tracking north and east from the Tennessee River Valley brings widespread precipitation and colder temperatures tonight into Thursday.
Near the surface, a cold front is pushing southward through western Kansas.
While slightly cooler than today, highs will be in the upper 30s to mid 40s. Low pressure system moves east Thursday night with deep long wave upper trough beginning to dig across the Eastern United States. As a result much cooler air starts to filter into the region with overnight lows falling into the mid to upper 20s.
Drier and warmer conditions are expected to return for the second half of the week. The last feature in this event is a positive-tilted trough now in northern Nevada. This trough will move into Utah tonight and through central Colorado Wednesday, losing amplitude as it does so. This resultant trough axis and weak lower-level frontal forcing is what will move through our area by early Wednesday morning through early Wednesday evening.
A ridge moving across the MS Valley with return flow this afternoon to early evening will cause the front to lift back north into early Wednesday with temperatures warming back to near 80 by Wed afternoon. A short wave will move across the Rockies by Wednesday afternoon with low pressure developing across western Texas and moving eastward. A cold front is expected late Wednesday into early Thursday. Temperatures will continue fall through the afternoon behind the front as the Canadian ridge builds in.
Temperatures along the Island Chain are in the lower 70s with dew points in the upper 60s to near 70 degrees.
215 AM EST Wed Nov 27 2024 High pressure will build eastward over the Mid Atlantic region this morning through early afternoon, then push offshore later today as low pressure approaches from the west. This low and its trailing cold front will cross the region Thanksgiving Day and evening, bringing unsettled weather.
1045 PM CST Tue Nov 26 2024 Updated at 1042 PM CST Tue Nov 26 2024 - Low-end windy conditions are expected on Wednesday across the Caprock, with a cold front moving through during the afternoon. An upper level low sitting over western Canada will push a strong cold front through our region late in the afternoon veering the winds to the north.