Aikyam-Lab/Synoptic-Bench huggingface dataset:
(This evening through Wednesday) The amplified upper ridge, mostly centered over the Rockies today, will continue to shift east and flatten tonight and tomorrow. Mid/high-level moisture associated with broad troughing across the SE Pacific will slow down radiative cooling compared to last night, with overnight lows right around normal for late November. Little change in tomorrow's forecast, with NBM and other ensembles tightly fit around highs of 60 degrees area wide, as thicker cloud cover builds in across our area out ahead of the negatively tilted trough taking shape across Southwest Conus into Wednesday night.
1119 AM CST Tue Nov 28 2023 Key Messages: - Chilly again today with high temperatures ranging from the mid 30s over NE Missouri to the low to mid 40s elsewhere. - Warmer temperatures come tomorrow with highs returning into the mid 40s to mid 50s.
1157 AM CST Tue Nov 28 2023 (Today through Wednesday afternoon) Clouds this morning are keeping temperatures a bit warmer across the Permian Basin while many other locations have fallen to near freezing.
(Tonight) Dry conditions and clear skies will persist through the overnight hours, as high pressure and northwesterly flow continue to advect cooler air over the area. Tonight will be another chilly one, with lows dropping into the low to mid 20s and wind chills falling into the teens. With the drier air in place, do not expect freezing fog to be an issue overnight given larger dewpoint depressions, but residents should allow extra time to defrost windshields for the morning commute.
1127 AM MST Tue Nov 28 2023 IR currently depicts mainly clear skies over the CWA with upper level ridging firmly set in place through the state and much of the Rocky Mountain region.
/Issued 1212 PM CST Tue Nov 28 2023/ /Through Wednesday/ A fairly tranquil mid-week will continue as high pressure dominates across the region.
DISCUSSION: This afternoon, high pressure is in place along the lower and mid Mississippi Valley with ridging extending into portions of the Upper Midwest.
Temps fall quite a bit tonight with min temps well below freezing areawide, which is 10-15 degrees below normal. A little warmer Wednesday afternoon compared with today with highs in the low to mid 50s, but still 3 to 10 degrees below normal.
202 PM MST Tue Nov 28 2023 The strong ridge of warm high pressure is settling in nicely over the region, allowing temperatures today to climb well above normal. As the ridge becomes dampened a bit by a few small-scale low pressure disturbances riding up and over the continental divide along the upper-level flow, expect varying temperatures with a few cooler days here and a few warmer days there.
649 PM CST Tue Nov 28 2023 (This afternoon through Wednesday) A broad upper-level trough axis is driving across the Northeastern US while low-level ridging is building eastward across the Lower MS River Valley. With dry west-northwesterly flow and the stabilizing ridge over the region, there will be plenty of sunshine today and tomorrow. 15 to 20 mph wind gusts will make it feel a few degrees cooler this afternoon, especially in shaded areas.
(This afternoon through Wednesday) A broad upper-level trough axis is driving across the Northeastern US while low-level ridging is building eastward across the Lower MS River Valley. With dry west-northwesterly flow and the stabilizing ridge over the region, there will be plenty of sunshine today and tomorrow. 15 to 20 mph wind gusts will make it feel a few degrees cooler this afternoon, especially in shaded areas.
516 PM CST Tue Nov 28 2023 (This evening through Wednesday night) Split flow ridge currently moving over the Rocky Mountains will begin to break down tomorrow as the upper trough moving towards northern CA moves onshore.
Light southerly winds will increase through the day Wednesday as low pressure deepens in the lee of the Rockies.
Showers are beginning to stream onshore ahead of a weakening upper low that has slowly been approaching the region. Cloud cover will rapidly fill in this evening as the low pushes onshore, bringing the likelihood for beneficial rain showers to the southern zones of the CWA, mainly south of Cape Mendocino through Wednesday morning.
A weakening low pressure system will pass over the area Wednesday and Wednesday night bringing a few light showers to mainly Mohave County.
525 PM CST Tue Nov 28 2023 Key Messages: -Warmer temps today and Wednesday with highs in the 30s to low 40s -Breezy west winds continue overnight and into Wednesday ahead of a cold front Quiet weather prevails through the remainder of the day and into tonight. Given the lack of snow pack and favorable winds, NBM 75th percentile temperatures were used for highs both today and Wednesday as most models are running much cooler than the pattern supports. Cooler air returns to the Northern Plains late Wednesday evening as a cold front brings more seasonal temperatures to the area. Northwest winds will be in the range of 15 to 20 mph through the evening and into the overnight, with lows in the lower 20s.
540 PM CST Tue Nov 28 2023 (Tonight) Dry conditions and clear skies will persist through the overnight hours, as high pressure and northwesterly flow continue to advect cooler air over the area. Tonight will be another chilly one, with lows dropping into the low to mid 20s and wind chills falling into the teens. With the drier air in place, do not expect freezing fog to be an issue overnight given larger dewpoint depressions, but residents should allow extra time to defrost windshields for the morning commute.
333 PM PST Tue Nov 28 2023 Near freezing overnight low temperatures through Wednesday morning.
344 PM MST Tue Nov 28 2023 IR currently depicts mainly clear skies over the CWA with upper level ridging firmly set in place through the state and much of the Rocky Mountain region.
Not getting as cold tonight as last night but still dipping below freezing. Key Messages: -Warmer temps today and Wednesday with highs in the 30s to low 40s -Breezy west winds continue overnight and into Wednesday ahead of a cold front Quiet weather prevails through the remainder of the day and into tonight. Given the lack of snow pack and favorable winds, NBM 75th percentile temperatures were used for highs both today and Wednesday as most models are running much cooler than the pattern supports. Cooler air returns to the Northern Plains late Wednesday evening as a cold front brings more seasonal temperatures to the area. Northwest winds will be in the range of 15 to 20 mph through the evening and into the overnight, with lows in the lower 20s.
Temperatures near normal this evening will continue to increase tomorrow to the low to mid 30s, which will persist for the rest of the week as a upper level ridge slides across the Upper Midwest.
As the low level flow backs overnight the main focus for snow showers will shift to the area near and north of Muskegon, especially late tonight into Wednesday morning. The forecast for total snowfall remains in the 1 to 2 inch range with the highest amounts further north where the lake enhancement combines with mid level moisture/WAA.
(This evening through Wednesday night) Split flow ridge currently moving over the Rocky Mountains will begin to break down tomorrow as the upper trough moving towards northern CA moves onshore.
526 PM CST Tue Nov 28 2023 High pressure will prevail through Wednesday.
535 PM CST Tue Nov 28 2023 (This evening through Wednesday) The amplified upper ridge, mostly centered over the Rockies today, will continue to shift east and flatten tonight and tomorrow. Mid/high-level moisture associated with broad troughing across the SE Pacific will slow down radiative cooling compared to last night, with overnight lows right around normal for late November. Little change in tomorrow's forecast, with NBM and other ensembles tightly fit around highs of 60 degrees area wide, as thicker cloud cover builds in across our area out ahead of the negatively tilted trough taking shape across Southwest Conus into Wednesday night.
444 PM CST Tue Nov 28 2023 (This afternoon through Wednesday night) Our weather stays quiet in the short term with quasi-zonal flow aloft and an upper ridge in place over the Rockies/Great Basin. This ridge gradually weakens but slides eastward over the next 24 hours. Increasing cirrus holds tonight's low temperatures a tick warmer than this morning. With clearing cirrus and an uptick in thickness as the upper ridge moves overhead, Wednesday's temperatures return back to near normal- largely in the low to mid 60s.
Unsettled pattern for the rest of the week with cooler temperatures. (This evening through Wednesday) Satellite imagery shows the upper level low pressure system approaching the region currently placed around 400 miles to the west of San Francisco. Wednesday's highs will be cooler as the rain passes through, with highs generally in the low to mid 60s across the lower elevations, and into the 50s for the higher elevations.
The Freeze Warning expired at 9 AM PST this morning, and will be the last Freeze Warning of the season for 32 degrees, as widespread freezing temperatures have been observed in the Valley for this cold event. This cloud cover is associated with a low offshore that will weaken and move southeastward, as the upper level ridge continues to shift to the east. Shower chances will also be associated with this low, tonight into Wednesday.
KEY MESSAGES: * Dry through the short term with above average temperatures Ensembles along with deterministic models agree on a ridge to our west and a trough to the east, continuing to put the Northern Plains in northwest flow aloft. By Wednesday, the ridge breaks down as it moves east with Canadian models/GFS showing zonal flow over the area while NAM/EC keep it more northwest flow.
1037 PM CST Tue Nov 28 2023 (Tonight) High pressure at the surface will promote clear/calm conditions overnight across the Tennessee Valley. Given the dry air mass in place, it will be another good setup for radiational cooling as low temperatures will once again fall into the low to mid 20s.
940 PM CST Tue Nov 28 2023 (This afternoon through Wednesday night) Our weather stays quiet in the short term with quasi-zonal flow aloft and an upper ridge in place over the Rockies/Great Basin. This ridge gradually weakens but slides eastward over the next 24 hours. Increasing cirrus holds tonight's low temperatures a tick warmer than this morning. With clearing cirrus and an uptick in thickness as the upper ridge moves overhead, Wednesday's temperatures return back to near normal- largely in the low to mid 60s.
1027 PM CST Tue Nov 28 2023 (This evening through Wednesday night) Split flow ridge currently moving over the Rocky Mountains will begin to break down tomorrow as the upper trough moving towards northern CA moves onshore.
The light southerly flow at the surface will aid in keeping temperatures several degrees warmer that what has been seen the previous few nights. High temperatures will pop into the low 60s.
1218 AM PST Wed Nov 29 2023 Sub-freezing temperatures are highly probable in the Kern County desert and rural areas of the San Joaquin Valley early this morning.
An unsettled pattern will continue into the weekend with cooler temperatures. The upper low is forecast to devolve to an open- wave trough while sinking southeast towards the Central Coast with the associated surface front remaining just offshore. Temperatures this afternoon should be seasonal with highs mostly in the lower 60s.
89^GSatterwhite Previous short-term discussion: (This afternoon through Wednesday) A broad upper-level trough axis is driving across the Northeastern US while low-level ridging is building eastward across the Lower MS River Valley. With dry west-northwesterly flow and the stabilizing ridge over the region, there will be plenty of sunshine today and tomorrow. 15 to 20 mph wind gusts will make it feel a few degrees cooler this afternoon, especially in shaded areas.
High temperatures will once again reach into the upper 50s or low 60s areawide, with slightly cooler temperatures hanging on in northern Oklahoma.
(Tonight) High pressure at the surface will promote clear/calm conditions overnight across the Tennessee Valley. Given the dry air mass in place, it will be another good setup for radiational cooling as low temperatures will once again fall into the low to mid 20s.
318 AM EST Wed Nov 29 2023 Strong high pressure will continue to build in from the south and west through late week.
Currently - The Keys remain in a cool post cold front environment. Shallow bay side waters have slipped into the lower to mid 70s. However, somewhat cooler bay side waters may delay this eventuality. Expect temperatures to range from the lower 60s in parts of the Upper Keys to the Upper 60s in the Lower Keys.
159 AM EST Wed Nov 29 2023 Strong high pressure will continue to build in from the south and west through late week.
1031 PM CST Tue Nov 28 2023 (This evening through Wednesday) The amplified upper ridge, mostly centered over the Rockies today, will continue to shift east and flatten tonight and tomorrow. Mid/high-level moisture associated with broad troughing across the SE Pacific will slow down radiative cooling compared to last night, with overnight lows right around normal for late November. Little change in tomorrow's forecast, with NBM and other ensembles tightly fit around highs of 60 degrees area wide, as thicker cloud cover builds in across our area out ahead of the negatively tilted trough taking shape across Southwest Conus into Wednesday night.
Warmer today but high temps still slightly below normal. The upper trough to our northeast is currently pushing further east and high pressure is gradually nudging in from the southwest. 30 to 35 knots of flow is present at 850mb today due to a moderately tight pressure gradient between the high to our southwest and the trough over New England. This means another day of breezy conditions across the higher elevations, but not as windy as yesterday. With the warmer temperatures today, and still dry airmass, moderately low RH values are expected this afternoon. Tonight, warmer temps are expected due to southwest flow developing along with increasing high clouds.
349 AM EST Wed Nov 29 2023 Cooler and drier high pressure will continue to build into the area today, with clouds gradually clearing the southern half of the area. Highs today only expected to reach to around 60 north to the lower 70s south.
252 AM CST Wed Nov 29 2023 Quiet weather is expected to start today, before winds begin to increase late in the day as a cold front moves through tonight. Upstream, upper flow was beginning to split over the western CONUS, with northern stream ridging extending across British Columbia and the southern stream trough digging into California. Temperatures will be a touch cooler than yesterday, with highs from the upper 30s north to the upper 40s south. Winds are expected to be strongest in the north central and east, closer to the center of the low and with a slightly tighter pressure gradient.
(Today and tonight) Currently we have weak upper level ridging over the area, with an upper low off the northern California coast. This low will move southeast into the southwestern U.
Cloud cover will gradually increase this afternoon as moisture builds into the area and high pressure to our southeast continues to slowly move eastward.
1135 PM CST Tue Nov 28 2023 (Tonight) High pressure at the surface will promote clear/calm conditions overnight across the Tennessee Valley. Given the dry air mass in place, it will be another good setup for radiational cooling as low temperatures will once again fall into the low to mid 20s.
The ridge of high pressure will continue to be the dominant feature over the Northern Rockies today. These features should help lift the inversions, including the low stratus clouds, but do not appear to be strong enough to break them completely up.
An upper trough to our west will quickly lift across the area Thursday bringing with it gusty west winds and blowing dust. The strongest winds are likely in the higher terrain, especially the Guadalupe/Delaware Mountains where gusts could surpass 75 mph.
601 AM EST Wed Nov 29 2023 High pressure will cover the area through Thursday, with below normal temperatures through at least Wednesday.
Cooler and drier high pressure will continue to build into the area today, with clouds gradually clearing the southern half of the area. Highs today only expected to reach to around 60 north to the lower 70s south. Another chilly night tonight/Thursday morning, with the freeze watch continued for inland Levy county, and mid to upper 30s elsewhere across the Nature Coast, and into the lower 40s to lower 50s central and south. Conditions then moderate as the high center shifts east over the Atlantic and the next frontal system approaches from the west.
High temperatures should be mainly in the lower 60s across the forecast area.
624 AM EST Wed Nov 29 2023 High pressure brings dry weather today and Thursday.
534 AM CST Wed Nov 29 2023 (Today through Thursday) Weak upper level ridging will slowly give way to a longwave trough today. As the higher pressure moves east a low-level jet looks to setup in the southerly return flow overhead. This drying of the mid levels will support clearer skies, and warmer temperatures thursday afternoon.
Surface temperatures will continue to gradually warm through the rest of the overnight hours with southerly flow advecting warmer air into the region and causing a non-diurnal overnight temperature curve.
Expect some passing high clouds this afternoon with temperatures a couple degrees warmer than yesterday as southerly flow and thickness values increase.
A weakening low pressure system will pass over the area today and tonight bringing some light showers to mainly Mohave County.
605 AM EST Wed Nov 29 2023 Cold high pressure over the region today will shift east over the southwest Atlantic Thursday.
558 AM CST Wed Nov 29 2023 (Today through Thursday) Dry conditions will continue to prevail through Thursday afternoon as apex of high pressure influences slowly shift eastward, but are still strong enough to hamper any convective development across our area. Lows tonight will rise above freezing in almost all locations expect higher elevations of Cumberland Plateau Region.
(Today and tonight) Currently we have weak upper level ridging over the area, with an upper low off the northern California coast. This low will move southeast into the southwestern U. As the low approaches, surface pressure falls will impact the southern plains, increasing southerly flow and moisture in our area. Lift will increase tonight as the low approaches, and we could see a few showers across areas mainly east of an Abilene to Sonora line. Tonight, with mostly cloudy skies and increased moisture, lows will be much warmer in the mid 40s to lower 50s.
521 AM EST Wed Nov 29 2023 Single digit wind chill values this morning will quickly warm toward above normal temperature by Thursday under the influence of high pressure.
201 AM MST Wed Nov 29 2023 A cold front will move across the region this morning, reducing winds over the western foothills by mid day.
530 AM CST Wed Nov 29 2023 - Temperatures will be on the warmer side of our seasonal values for the remainder of the week.
- Cold front tonight brings temperatures back to near average Thursday, along with breezy northwest winds area-wide and flurries within Minnesota.
205 AM MST Wed Nov 29 2023 Overview: A deamplifying ridge will shift eastward over the Rockies as a broad upper level trough over the eastern CONUS progresses offshore into the Atlantic. Meanwhile, an upper level low. resulting in relatively cooler overnight lows. Wed: Expect conditions similar to today, albeit warmer, with highs reaching the mid-upper 50s. the leading edge of which will manifest as a northerly wind shift and effective cold frontal passage. ushering a cooler airmass (H85 temps 0 to -4C) into the Tri-State area. Additionally, forecast soundings suggest that a thick/extensive veil of cirrus (on the northern periphery of the upper low progressing eastward from the Desert Southwest into the Southern Plains) will shroud the region during the day. With the above in mind, expect noticeably cooler temperatures (15-20F cooler than Wed).
the SFC warm front will lift N/NE into NRN LA and possibly into extreme SERN AR Thu night. but there could be a slightly increased threat for a strong storm or two across extreme SERN AR near where this SFC warm front lifts into AR Thu night. The strongest winds will be seen in the higher terrain where the elevation will be closer to the base of these higher winds aloft.
621 AM EST Wed Nov 29 2023 High pressure builds into the area and remains in place through Thursday.
633 AM EST Wed Nov 29 2023 Strong high pressure will continue to build in from the south and west through late week.
(Today through Thursday) Weak upper level ridging will slowly give way to a longwave trough today. As the higher pressure moves east a low-level jet looks to setup in the southerly return flow overhead. This drying of the mid levels will support clearer skies, and warmer temperatures thursday afternoon.
The high will move east of the area late this evening with a light southerly flow developing. Lows tonight will be in the low 30s inland to mid 40s near the coast. Highs on Thursday will be in the low 60s inland to mid/upper 60s across the southern third of the area.
(Today through Thursday) Dry conditions will continue to prevail through Thursday afternoon as apex of high pressure influences slowly shift eastward, but are still strong enough to hamper any convective development across our area. Lows tonight will rise above freezing in almost all locations expect higher elevations of Cumberland Plateau Region.
High pressure has weaken slightly but still remains in control over the area. Expect the inversion conditions to continue, with overall cooler valley temperatures than mountain temperatures. There continues to be patchy freezing fog for most valleys, especially the Magic Valley and Lower Snake Plain, mainly along the I-86 corridor as well along I-84 from Sweetzer Summit to the Utah border. A special weather statement is in place for patchy dense freezing fog along the I-86 corridor from Pocatello to Raft River and along I-84 from Sweetzer Summit to the Utah border for this morning. Temperatures will continue to be around 8 to 12 degrees below normal with continued high pressure, overall light winds, and fresh snow.
With the region still being dominated by high pressure and most of the deeper moisture advection holding off until near the weekend, both Wednesday and Thursday are expected to stay dry but with increasing cloud cover on Thursday. Temperatures will stay on the cooler side in the 70s for Wednesday and then increase on Thursday into the low 80s as warm air advection begins.
Temperatures over central and southwest Florida were a tad bit warmer in the low to mid 40's. Temps will gradually warm up into the low 60's north, mid 60's central and low 70's over southwest Florida under mostly sunny skies. Broad high pressure will continue to build in over the southeast U.
406 AM MST Wed Nov 29 2023 Rocky Mountain ridge begins to break back down today as a trough dives along the west coast. With the trough broken down, colder air will return to the state on Thursday, with most areas back near normal in the 20s and low 30s.
234 AM MST Wed Nov 29 2023 Rocky Mountain ridge begins to break back down today as a trough dives along the west coast. With the trough broken down, colder air will return to the state on Thursday, with most areas back near normal in the 20s and low 30s.
939 AM EST Wed Nov 29 2023 High pressure builds into the area and remains in place through Thursday.
A warming trend will begin today as moderate southerly winds develop ahead of an approaching low pressure system.
407 AM EST Wed Nov 29 2023 Cold high pressure over the region today will shift east over the southwest Atlantic Thursday.
412 AM EST Wed Nov 29 2023 High pressure builds into the area and remains in place through Thursday.