Aikyam-Lab/Synoptic-Bench huggingface dataset:
Otherwise, a very stable pattern due to high pressure off the West Coast will remain for the next several days keeping the weather dry and mild temperatures. Offshore flow pattern continues this Saturday as a Rex-Block ridge now resides off the West Coast. The weak upper low off the Southern California Coast associated with the Rex-Block has steered some clouds/precipitation through Southern California. Temperature-wise, the slight shift of the ridge pattern toward the West Coast will indicate a weak warming trend. Therefore, will lean toward having the lower elevation frost and freeze free early in the coming work week. By the end of the weekend, the shifting Rex-Block will place the center of the weak upper low closer to Northern Baja California (toward Yuma, AZ) and put the district under Northerly to Northeasterly winds aloft.
/issued 248 PM CDT Sat Nov 2 2019/ (Tonight and Sunday) Clearing skies and warmer temperatures are expected for this morning and also for this afternoon. For tonight, expect low temperatures to be a touch warmer than this morning in the low to mid 50s.
A persistent pattern of high pressure aloft and a thermal trough at the surface will continue into at least mid- week.
541 PM MDT Sat Nov 2 2019 Latest surface map has a trof extending from the western Dakotas into the Nebraska Panhandle. Aloft, northwest flow continues across the Northern Plains, as an upper trof extends from Hudson Bay into the Great Lakes and an upper ridge is centered over the eastern Pacific. Rain/snow showers will linger through the day Sunday as a cold front backs through the forecast area during the late afternoon.
Otherwise, surface ridging will dominate. Chattanooga Airport, TN 34 57 37 62 / 0 0 0 0 Knoxville McGhee Tyson Airport, TN 32 55 34 61 / 0 0 0 0 Oak Ridge, TN 33 54 34 61 / 0 0 0 0 Tri Cities Airport, TN 28 52 29 60 / 0 0 0 0.
Trailing from the low, a cold front will back southward toward our southern counties late tonight. Prevalent low and mid cloudiness will continue across the area through the night with northerly flow bringing cooler air north of Orlando in the upper 50s for northern Lake and interior Volusia counties. Temps will remain warmest along the Treasure coast beaches in the lower to mid 70s with lows in the 60s from Orlando to Titusville.
A weak cold front and lake-enhanced showers may provide light rain, following by a light dusting of snow north of Interstate 80 tonight. Unfavorable W/WNW flow in the low-levels will keep any robust lake convection north of the majority of the CWA. Similarly, some scattered showers are also possible along the higher ridges of PA/MD/WV, but this activity will also be limited by less- than-ideal wind direction. Low-level ridging will become established again fairly rapidly behind the front, helping to cut off any non lake-related precipitation. Any remaining lake-enhanced showers will end by midday Sunday as high pressure expands into the region. Anticipate another cool afternoon with far northern and ridge locations possibly not reaching 40 during the day.
Surface ridging will keep winds generally light through the forecast period.
1011 PM EDT Sat Nov 2 2019 High pressure will settle into the region for Sunday keeping below normal temperatures through the weekend.
Current north to NW winds will become calm to light/variable by this evening, then from S-SE to between 5 to 10 kts areawide by mid morning tomorrow as high pressure moves east. /Tonight through Sunday Night/ Temperatures beginning to moderate, but still remain below seasonal norms, as high pressure gradually slides east of MS river overnight and south winds increasing to around 10 mph across ne TX by Sunday aftn.
737 PM EDT Sat Nov 2 2019 High pressure will settle into the region for Sunday keeping below normal temperatures through the weekend.
Skies will be clear through the weekend as the Central High Plains is on the convergent side of an upper- level trough centered over the eastern United States. Overnight lows tonight will get down to the low to mid 20s with warmer temperatures farther east. Afternoon highs tomorrow will get to the mid 50s to low 60s with warmer temperatures farther east. Overnight lows Sunday night will range from the low 20s to the low 30s.
852 PM EDT Sat Nov 2 2019 Precipitation chances are expected tonight with the passage of a cold front. Mainly dry weather is expected Sunday under building high pressure. Also mentioned slight chances POPs in the ridges though again unfavorable flow and little moisture in the dendritic growth region should limit this potential. Any remaining lake-enhanced showers will end Sunday morning as high pressure expands into the region. Anticipate another cool afternoon with far northern and ridge locations possibly not reaching 40 during the day.
Strong high pressure building into the southeast U. Interaction between a stalled frontal boundary over southern Florida and high pressure building over the southeast U.
817 PM MDT Sat Nov 2 2019 Quick grid update to adjust for slightly warmer temperatures and more cloud cover. Significant weather is not expected for the short term as high pressure remains in place. Slightly warmer at most locales.
Little change expected to the dry/stable northwest flow aloft as the high amplitude ridge remains near the west coast and a broad upper trough covers the eastern two-thirds of the CONUS and Canada. Model guidance in the extended highlights the ridging in place over the West Coast of the CONUS with some gradual weakening and flattening as it shifts farther into the Intermountain West late in the week.
After a very weak cold front moved through the region this morning, the area remains under the axis of an upper trough in an area of increasing surface pressure. Radiative cooling will allow temperatures to drop below freezing by daybreak. Highs are expected in the low to mid 50s. Under fairly flat flow in the base of a broad upper trough we will keep our temperatures on the cool side during this period.
Upper air analysis showed a deep low just south of Hudson Bay with the main trough across the eastern half of CONUS. Upper level trough will remain over eastern CONUS with several disturbances on the back side over the Upper plains.
Temperatures will creep below freezing in most areas, but fog shouldn't be as dense tomorrow as it has been, so freezing fog shouldn't be a major concern. If you loved today, you'll love Sunday even more as temperatures climb a few degrees warmer under sunny skies.
An early evening update to adjust tonights temperatures to be nearly persistent as last night with possible slight warming in the lower elevations.
High pressure continues to settle in across the Midsouth tonight. However, another chilly night is expected as temperatures will fall into the low to mid 30's. Latest surface analysis places a 1030 mb high pressure center over Oklahoma at this hour. This high is expected to push into the Mid-South tonight and allow optimum radiational cooling to occur again. Lows will bottom out in the low to mid 30s areawide, with frost and a light freeze possible for portions of west Tennessee and northeast Mississippi.
1053 PM MDT Sat Nov 2 2019 Quick grid update to adjust for slightly warmer temperatures and more cloud cover. Significant weather is not expected for the short term as high pressure remains in place. Slightly warmer at most locales.
High pressure will continue to bring dry conditions to the state through this week while temperatures hold steady through at least midweek.
1138 PM EDT Sat Nov 2 2019 Precipitation chances are expected tonight with the passage of a cold front. Mainly dry weather is expected Sunday under building high pressure. Also mentioned slight chances POPs in the ridges though again unfavorable flow and little moisture in the dendritic growth region should limit this potential. Any remaining lake-enhanced showers will end Sunday morning as high pressure expands into the region. Anticipate another cool afternoon with far northern and ridge locations possibly not reaching 40 during the day.
Guidance has been bouncing around with temps, earlier values were hinting the northeast may see more freezing conditions, but dewpoints are still up around 40 with temps in the lower to mid 40s.
Current calm to light/variable winds will become S-SE to between 5 to 10 kts areawide by mid morning as high pressure moves east. Some areas across portions of southeast Oklahoma and southwest Arkansas will fall to near freezing. /Tonight through Sunday Night/ Temperatures beginning to moderate, but still remain below seasonal norms, as high pressure gradually slides east of MS river overnight and south winds increasing to around 10 mph across ne TX by Sunday aftn.
151 AM EDT Sun Nov 3 2019 High pressure will settle into the region for Sunday keeping below normal temperatures through the weekend.
1037 PM EDT Sat Nov 2 2019 Water vapor imagery highlights mean-layer ridging over the Gulf of Mexico. Meanwhile, an upper level low lumbers to the west over the extreme Western Caribbean. A progressive high pressure system centered over the Arklatex supports fresh north to northeast breezes across the extreme southeastern Gulf of Mexico, soon to include Pulaski Shoal. Convergence along a decaying frontal boundary supports a broad swath of showers and storms stretching from near Cape Sable to the western portions of the Lower Keys. We sent an earlier update to increase rain chances for the Lower Keys to 50%, otherwise, no further updates are needed.
1029 PM MDT Sat Nov 2 2019 Latest surface map has a trof extending from the western Dakotas into the Nebraska Panhandle. Aloft, northwest flow continues across the Northern Plains, as an upper trof extends from Hudson Bay into the Great Lakes and an upper ridge is centered over the eastern Pacific. Rain/snow showers will linger through the day Sunday as a cold front backs through the forecast area during the late afternoon.
An upper level ridge over northern California brought a few degrees of warming to the district today. The high will weaken on Sunday allowing for a weak onshore flow to develop. This will bring cooler temperatures to the coast.
Temperatures have dropped well into the 20s where the sky has cleared, remaining in the low to mid 30s where cloud cover persists. With increasing clouds overnight, maintained the warmer overnight lows with this product issuance. Decided to keep any mention of freezing rain out of the forecast at this time based on very little confidence in this scenario.
Went ahead and added some patchy fog along area waterways through sunrise and freezing fog along the waterways that are below freezing. After the fog burns off, sunny skies with highs in the low to upper 50s can be expected. A little warmer tonight with lows in the lower to mid 30s.
257 AM CST Sun Nov 3 2019 High pressure will drift east today resulting in return flow and increasing low level moisture. Cloud cover will increase through today from southeast to northwest which will keep tonight's temperatures a bit warmer than the last few chilly nights.
Highs in the upper 50s are expected this afternoon, with some areas even seeing the low 60s under mostly sunny skies.
There will be morning low clouds and fog across the lowlands.
Some of the precip in our southwestern counties could be rain early on thanks to some warmer temperatures, but overall think most of the activity will be snow showers or flurries.
The Evening Update: The 5H cluster analysis reveals the stagnant dry/ridge pattern along the coast will persist for at least the next 7 days. The 5H cluster analysis reveals the deep trof (neg. This generally weakens the W Coast ridge slightly, but still keeps a dry wx pattern over the region this week. JHM High pressure over the west coast will continue dry weather with warm above normal days and cool nights.
Low cloud deck is beginning to move into far western ND which will likely keep temperatures much more stable, whereas in east-central ND some areas have already dropped into the low to mid 20s. Temperatures have dropped well into the 20s where the sky has cleared, remaining in the low to mid 30s where cloud cover persists. With increasing clouds overnight, maintained the warmer overnight lows with this product issuance. Decided to keep any mention of freezing rain out of the forecast at this time based on very little confidence in this scenario.
Aloft, northwest flow continues, with a longwave trough at 500mb based over the eastern CONUS and ridging off the western coast of the CONUS.
High pressure centered over AR early this morning will move to WV later this afternoon and continue to the mid Atlantic coast Monday morning. Calm conditions over most sites will mean another chilly start to the day today, with temperatures below freezing. One possible concern is with some patches of river valley fog in the usual locations possible combining with below freezing temperatures to create slick spots later this morning. Otherwise, mostly sunny skies should allow for temperatures to rise to the low 50s. A more steady south wind tonight should keep us more mixed and thus a little warmer. An upper level ridge will remain anchored off the coast of the Pacific NW, supporting a broad upper trough across much of the central and eastern CONUS.
429 AM MST Sun Nov 3 2019 Current surface map shows broad area of low pressure across the North Dakota with trof/warm front across eastern South Dakota.
620 AM EST Sun Nov 3 2019 Chilly high pressure will build over the region through Monday. Chilly high pressure centered over the lower Mississippi Valley early today will move east to a position over NC/VA tonight. With the high pressure expected to be overhead tonight. High pressure will move offshore early Monday. Highs Monday in the lower to mid 60s.
306 AM MST Sun Nov 3 2019 Current surface map shows broad area of low pressure across the North Dakota with trof/warm front across eastern South Dakota.
552 AM CST Sun Nov 3 2019 Breezy and warmer conditions will prevail across central Illinois today with afternoon high temperatures topping out in the lower to middle 50s. Despite limited sunshine, low-level WAA will help boost afternoon highs into the lower to middle 50s.
625 AM EST Sun Nov 3 2019 High pressure into Monday.
910 AM EST Sun Nov 3 2019 Chilly high pressure will build over the region through Monday. While some of the usual cool spots did reach or briefly dip below freezing this morning across the northern and western Piedmont zones, we've elected to continue the Frost/Freeze program and growing season across the entire CWA. With high pressure moving overhead, expect plenty of sun and decreasing cool northerly surface flow for the remainder of the day. Chilly high pressure centered over the lower Mississippi Valley early today will move east to a position over NC/VA tonight. With the high pressure expected to be overhead tonight. High pressure will move offshore early Monday. Highs Monday in the lower to mid 60s.
It will be warmer with a bit of northwest wind mixing to the surface over the northeast corner of Colorado again. Elsewhere, it should just be a few degrees warmer than yesterday. There's little change to the flow aloft through tonight so the higher elevations of the Front Range will stay fairly windy with occasional intrusions down to 8-9 thousand feet. Do not anticipate more an a few brief showers in that area mainly in the morning with slightly cooler afternoon temperatures.
517 AM EST Sun Nov 3 2019 Mainly dry weather is forecast for today and Monday under high pressure, with a warm front providing more seasonable temperatures tomorrow.
Temperatures look mostly above freezing in that area for tonight.
330 AM MST Sun Nov 3 2019 The main concern with the forecast will be a cold front moving through the region Sunday. An upper trough extending from Washington state to New England will remain in place through the day Sunday. The trough will make little eastward progress through the day. Monday will be a cooler day with a weak front moving through the region. A longwave trough continues to be present over the Plains. During this time there will be several short wave troughs that will move through the flow over the forecast area.
An upper level ridge remains over the Pacific Northwest and northern California while troughing persists over the southern portion of the state. Additionally, while the aforementioned trough over southern California breaks down, only minor day to day changes are anticipated across the region through the upcoming week. A broad ridge over California will keep the storm track and any precipitation chances well to our north.
Steep low level lapse rates leave little chance for any freezing rain so kept that out of the forecast for now. Surface cold front passes through on Monday, bringing down our temps to start the work week.
200 AM PST Sun Nov 3 2019 Weak low pressure aloft and weak onshore flow will help to build the marine layer early this week, bringing some relief from the very dry conditions. The low will move slowly east by midweek as high pressure builds over the Southwest. Upper-level low pressure remains anchored off the SoCal coast early this morning.
Highs in the upper 50s are expected this afternoon, with some areas even seeing the low 60s under mostly sunny skies. Mild conditions continue on Monday as a weak cold front slides through the region mainly during the latter half of Monday. Temperatures will generally be similar to Sunday; however, higher coverage in cloud cover over central Missouri may limit temperatures to the mid 50s, while southern Missouri climbs into the low 60s.
/issued 459 AM CST Sun Nov 3 2019/ (Today and Tonight) Early this morning, water vapor satellite showed a southwest to northeast oriented trough over the Southwest, while zonal flow existed over Texas. Meanwhile, with a little stronger southwest flow in the low levels and strengthening of the 850 mb thermal ridge, expect continued warming today and tonight, with highs reaching the upper 60s/low 70s and lows tonight reaching the upper 40s.
Meanwhile, high pressure will slide to the SE of the mid-Mississippi Valley, turning surface winds to the south today and ushering warmer temps back into the area. The warm up will be tempered a bit by the mid-level clouds, but we'll still be 5-10 degrees warmer than we were yesterday. Clouds will remain in the vicinity of the region overnight, which combined with continued southerly flow, should keep low temperatures nearly 10 degrees warmer than what we're seeing this morning. An attendant cold front will sweep through the mid-Mississippi Valley on Monday afternoon, though moisture ahead of and along the front looks to be rather limited.
Similar to today, a little cooler with highs in low to middle 50s and dry conditions. So Monday night will be about 10 degrees cooler than tonight with lows in middle 20s north to middle 30s south.
319 AM MST Sun Nov 3 2019 Northwest flow aloft over the area again today, with ridge along the West Coast and upper wave sliding from the nrn Rockies this morning into the upper Midwest overnight.
The uncertainty of development is due to slightly warmer overnight lows.
Otherwise, a very stable pattern due to high pressure off the West Coast will remain for the next several days keeping mild temperatures and dry weather conditions. /issued 232 AM PST Sun Nov 3 2019/ Some clouds towards S CA due to a weak stationary trough near the the Channel Islands.
With high pressure overhead and light winds, there is a chance for some frost this morning. Highs will be in the lower 60s generally. Tonight, the high will continue to push off to the north and east, leaving the region on the western side. This will allow southerly winds to bring moisture back into the region and allow for warmer overnight lows. Readings should drop to the lower 40s across most locations, though some upper 30s may still be possible in the north closest to the high center.
801 AM EST Sun Nov 3 2019 Dry conditions expected through Monday under high pressure with more seasonable temperatures tomorrow.
High pressure will start to slide off into the Atlantic shifting our winds more to an easterly direction and increasing our temperatures and humidity through the week.
702 AM EST Sun Nov 3 2019 Several terminals are experiencing and will continue to experience MVFR conditions throughout the next couple hours as the low clouds begin to lift. High pressure will start to slide off into the Atlantic shifting our winds more to an easterly direction and increasing our temperatures and humidity through the week.
945 AM EST Sun Nov 3 2019 High pressure will provide for dry, but continued cool conditions today and Monday. A weak cold front will move through the region Monday night, bringing the chance for a few showers. Temperatures today will climb into the upper 40s in the north to the lower 50s in the south. As it does, an associated cold front will drop southeast toward our area through Monday afternoon. Highs on Monday will range from the lower 50s in the north to the mid 50s across the south.
Temps in western ND are sitting right around 33 to 34 degrees, but warmer temps are just upstream, so went with more of a rain-snow mix in southwestern ND that knocked down snow totals just a bit. Aloft, northwest flow continues, with a longwave trough at 500mb based over the eastern CONUS and ridging off the western coast of the CONUS.
339 AM CST Sun Nov 3 2019 Warmer temps return today with breezy southerly winds developing.
An upper level trough continues across much of the CONUS while an upper level low spins just west of Baja California.
High pressure will continue dry weather through at least the middle of the coming week.
Light winds pick up out of the NE and begin to acquire a more easterly component through the day as high pressure in the MS River Valley slides eastward.
A lee trough remains in place through portions of the northern and central Plains regions. Lows Sunday night follow suit probably being around 40 degrees at most locations ahead of a weak cold front. As the aforementioned cold boundary works through the area early Monday, high temps will be overall cooler and below normal after FROPA.
A weak cold front will become stationary thru tomorrow over central OK and low level moisture will begin to increase across southern OK. Timing should limit any significant winter weather precip from falling, although there could be some freezing rain that develops over northwestern OK early Thu as the shallow cold air progresses southward.
A weak cold front will move southeast across the northwest half of Oklahoma tonight and early Monday, causing a minor wind shift, and little else. A weak cold front will become stationary thru tomorrow over central OK and low level moisture will begin to increase across southern OK. Timing should limit any significant winter weather precip from falling, although there could be some freezing rain that develops over northwestern OK early Thu as the shallow cold air progresses southward.
High pressure to our southeast/east will bring a return of south to southwest flow today into Monday. Highs today will be in the upper 50s to around 60 degrees, with readings a couple of degrees warmer for Monday. Models continue to bring a weak cold front across the middle Mississippi and lower Ohio valleys Monday night.
/Issued 257 AM CST Sun Nov 3 2019/ High pressure will drift east today resulting in return flow and increasing low level moisture. Cloud cover will increase through today from southeast to northwest which will keep tonight's temperatures a bit warmer than the last few chilly nights. Temperatures will be warmer than today with highs in the upper 70s to mid 80s.
504 AM MST Sun Nov 3 2019 The main concern with the forecast will be a cold front moving through the region Sunday. An upper trough extending from Washington state to New England will remain in place through the day Sunday. The trough will make little eastward progress through the day. Monday will be a cooler day with a weak front moving through the region. A longwave trough continues to be present over the Plains. During this time there will be several short wave troughs that will move through the flow over the forecast area.