Aikyam-Lab/Synoptic-Bench huggingface dataset:
/issued 230 PM CST Fri Jan 3 2020/ Upper level trough has moved east of the area this afternoon which will give way to a benign weather pattern for the next 7 days. Upper level ridging will strengthen across our area this weekend leading to slightly warmer temperatures on Saturday.
One additional note: with snowfall expected to occur along and behind the cold front on Saturday, blowing snow could become a real concern.
An upper low is forecast to push through the CWA overnight tonight into early Saturday morning with scattered to broken mid/high clouds pushing through the region. Behind the low.
Furthermore, some of the 00Z guidance shows a few more showers returning Saturday aftn--mainly E of I-65 and near the Plateau--with the main trough axis swinging across the area. The frontal timing is still on track, and thus temperatures are on track to hit the low-mid 40s by daybreak. Skies will clear late in the day, with high pressure building into the area from the W/NW.
239 AM EST Sat Jan 4 2020 A cold front has passed east of the area but showers will continue through morning as an upper trough moves over the region.
/issued 230 PM CST Fri Jan 3 2020/ Upper level trough has moved east of the area this afternoon which will give way to a benign weather pattern for the next 7 days. Upper level ridging will strengthen across our area this weekend leading to slightly warmer temperatures on Saturday. The low and attendant cold front will move through the area Sunday morning, and while the cold air is a bit limited with this system, daytime highs on Sunday will be a bit cooler especially across the northwest portion of the area.
Daytime hours should be fairly uneventful with a fair amount of sunshine and temperatures from the lower 40s across the MO River Valley to near 30 across the deeper snowpack of the Buffalo Ridge. With this said, models seem to be struggling with developing much of a mixed layer to draw down any of this high momentum air.
Behind the departing upper system, weak surface ridging will build into the area. Highs today should be in the low to mid 40s in our west and upper 30s in our northeast, where cloud cover will linger the longest.
As an upper level trough pushes away today, an upper level ridge builds in on Sunday. A weak cold front dips into North Central Texas later on Sunday with the only impact possibly being compressional heating to add a degree or two to the high temperatures.
Surface cold front and associated short wave trough were still off the northwest as of 8 PM MST. Widespread MVFR/IFR 04/12z through 04/18z due to low clouds and precipitation as a cold front quickly pushes through the region.
Scattered showers and thunderstorms will continue ahead of the cold front this afternoon. However, limited upper support and the influence of the mid-level ridge over much of Florida should continue to limit the extent of the severe weather. Showers will continue behind the front overnight, until the main trough axis swings early Saturday. Breezy conditions are expected on Saturday in the wake of the cold front as high pressure builds into the deep south. Seasonably cool conditions are expected through the weekend with temperatures dropping into the lower to mid 30s Saturday night and Sunday night.
1224 AM EST Sat Jan 4 2020 A cold front will move trough late tonight into early Saturday. Showers could continue into Saturday as an upper trough moves through.
1226 AM EST Sat Jan 4 2020 Periodic rain is expected through Saturday with crossing low pressure. The rain should end as snow Saturday night after the passage of the low. The rain should taper off in coverage toward morning as the low shifts east of the area, and deep layer moisture decreases. Precipitation will become more showery with the approach and passage of the upper trough on Saturday. Expecting less than an inch for most locations, though the higher terrain SE of PIT could see a couple of inches with some brief upslope enhancement.
/ISSUED 938 PM CST Fri Jan 3 2020/ Areawide temperatures have fallen into the low to mid 50s (upper 40s in cool spots) under clear skies and weakening northwest breezes.
1028 PM MST Fri Jan 3 2020 Northwest flow behind yesterday's trough passage is keeping orographic light snow periodically falling over the higher peaks of the northwest Colorado mountains and Elk mountains with minimal accumulations and rates. With the upper level jet moving overhead as the trough axis is shifting eastward, this has allowed some of these valleys to mix out. Aspen and Eagle may remain socked in through early evening before clearing out overnight as dry air moves in behind this trough and precipitation over the high terrain comes to an end. Temperatures also expected to warm up as a result, or at least it will feel warmer due to the presence of sun and lack of cloud cover.
Losing confidence that freezing fog will encroach on KFMN Sat morning as high clouds slowly filter into the area. Gusts near 35 kt will be possible, particularly around KCQC and along the high peaks of the Sangres. Breezy to windy conditions will develop along the central mountain chain late Saturday into Saturday night, and a cold front will enter eastern New Mexico by Sunday morning, setting temperatures back a few degrees there.
The cold front is just starting to work its way through the mid state, with obs to the northwest of Nashville showing northwesterly winds and dropping temperatures.
400 AM EST Sat Jan 4 2020 Modest cold advection within veering NNW flow will be offset by filtered insolation through the existing stratus deck to support neutral surface temperature trends today as temperatures stagnate in the low to mid 30s. However, deepening of the cold airmass will support steepening diurnal lapse rates and the potential for light snow showers as the mid-level trough shifts through the area today. Only noteworthy wx to speak of during the next several days is the well-advertised sheared/elongated trough axis which will lift through the Lower Peninsula on Sunday afternoon. Light northerly winds will slowly back to the northwest this morning and then hold westerly throughout the day with increasing strength as a low pressure system over the upper Ohio Valley migrates toward the East Coast.
This system was producing snow and bit of freezing drizzle west of the forecast area. Trough moving across the region this afternoon bringing snow, especially for southeast Minnesota and northeast Iowa. A wintry mix of freezing drizzle and snow will move into areas Wisconsin late Saturday night into early Sunday afternoon.
1047 PM CST Fri Jan 3 2020 Snow is expected to continue through the late afternoon into the early evening hours as upper low slides southeast. Low pressure over southwest Minnesota as of 21Z is expected to quickly shift southeast this evening leading to clearing skies and decreasing winds overnight. Flow quickly turns southerly after midnight across central South Dakota as elongated ridge shifts south. Further to the east, should have more of a typical diurnal curve, with the low level warm air advection arriving shortly after sunrise.
1030 PM MST Fri Jan 3 2020 Upper ridge drifts eastward across the state overnight, then is replaced by increasing wly flow aloft on Sat. This will bring a cold front across Colorado Sunday evening with gusty northwesterly winds over the area.
256 AM EST Sat Jan 4 2020 Showers continue across the forecast area ahead of the next cold front that will enter the area later this morning. The upper trough axis will then swing through the area this afternoon/evening. Given strong CAA and cold 850mb temps, some light snow showers will be possible in the higher elevations during this time before moisture scours out by 02-04z. Very limited impacts are thus anticipated in these areas, though a few isolated slick spots cannot be ruled out in these higher elevations, primarily on any lesser- traveled bridges/elevated roadways through Sunday morning.
1141 PM CST Fri Jan 3 2020 Early this afternoon, an upper level trough is located across the central CONUS, extending from the Upper Midwest down into portions of central Texas, with southwesterly flow on its eastern periphery bringing moisture and rainfall to the Gulf Coast and the Tennessee River Valley. At the surface, observations show northwesterly winds and a low cloud deck across the area sandwiched between this morning's cold front to our southeast and a secondary cold front draped across far northwest Missouri into central Kansas. Highs will only top out in the low to mid 40s for Saturday despite clearing skies.
220 AM CST Sat Jan 4 2020 Periods of light snow will continue across central Illinois this morning, as an upper low quickly tracks southeast across the state. Upper level low quite evident on water vapor imagery early this morning, centered just north of Quincy at 2 am. Radar mosaics earlier showed a well defined swirl as well, though the portion north of the low has significantly been fading as of late. By late morning, the upper low/trough will be near the Wabash River, and lingering snow should be quickly ending through midday.
256 AM CST Sat Jan 4 2020 (Today and Tonight) Dry weather with warmer temperatures over the next 24 hours. Upper level ridging will begin to move into the area today and tonight.
Tonight Through Sunday Night A 500mb trough continues to track eastward through the southern CONUS today. Subsidence follows, with an upper ridge building into the region by Saturday, providing NWerly upper flow, becoming a more westerly, zonal flow by Sunday morning. The upper trough is moving a surface cold front through the state today. Behind this cold front, colder and drier air will move into the state with west/northwesterly flow through late Saturday. By Sunday morning, southerly flow will return to Arkansas as the High center moves to our south. A weak cold front approaches late Sunday, returning surface northwesterly flow by the end of this period.
929 PM PST Fri Jan 3 2020 High pressure aloft will bring generally clear skies and mild weather this weekend.
237 AM EST Sat Jan 4 2020 A cold front has passed east of the area but showers will continue through morning as an upper trough moves over the region.
Scattered to overcast 6-10KFT ceilings have begun to push into the CWA as an upper low moves through the Plains.
but secondary cold front is now across our northwest. This front and trailing upper trough continue to set off light showers ahead while temps are cooling rapidly behind. Only small additional rainfall amounts are likely this morning but temp structure cooling with sharp upper trough coming in such that mixed pcpn likely on the plateau later today, ending as mainly snow showers this evening. Weak upper trough already moving into the plains later Mon, and that brings SFC wave/frontal boundary across the mid-state Mon night. Showers move out late Tue and progressive flow brings weak upper ridging across Wed/Thu.
Interestingly, soundings show a wedge of warmer air near the surface initially so this may start as some light rain before changing over to snow. That being said, expect accumulations to range generally from a dusting to a half of an inch, with the highest amounts over northeast MO and western IL. The system will quickly push east by Saturday afternoon, turning things dry as surface ridging nudges into the region.
An upper low is forecast to push through the CWA overnight tonight into early Saturday morning with scattered to broken mid/high clouds pushing through the region. Behind the low. Overall airmass change with the front will be minimal and we should see warmer temperatures than on Saturday given likelihood of more sunshine and a warmer start.
1018 PM EST Fri Jan 3 2020 A cold front will move trough late tonight into early Saturday. Showers are expected along and ahead of the cold front, and could continue into Saturday as an upper trough moves through.
06Z TAF discussion: Patches of low stratus and fog are bringing a mix of IFR to MVFR conditions ahead of an approaching cold front to start the period. An upper short wave and associated cold front will move into the delta this evening and move across the area through the overnight hours. In the wake of the boundary on Saturday, the winds may become gusty out of the northwest during the late morning into the afternoon hours, with gusts from 20-25 mph possible, but high pressure ridging will quickly build in by early Saturday evening and the winds will subside.
/Issued 920 PM EST Fri Jan 3 2020/ Instability axis continues along and ahead of a cold front across SE GA this evening.
858 AM EST Sat Jan 4 2020 A cold front has passed east of the area.
A weak cold front will move across the North Bay early this morning then dissipate as it moves southward across the central part of our area by sunrise.
Weak ridging and WAA prevail today as southerly winds bring warmer than average temperatures into the area. The main impacts this weekend will be attached to our next clipper system and associated cold front that will push through the region late tonight and through the day on Sunday. The current forecast will keep the highest wind gusts to higher elevations west of the Red River Valley. Overall impacts will remain toward the low end of the spectrum (although just a bit of snow and drifting does lead to hazardous travel at times). Guidance indicates zonal flow with multiple long wave troughs propagating from west to east across the CONUS. KDVL will see the highest likelihood of impacts as wind gusts could approach 50 knots during the overnight and early Sunday morning hours.
The weak upper level short wave trough over the coastal areas this morning will move to the east today. An upper level ridge over northwest Mexico into the Desert Southwest will move east into the region on Sunday. Temperatures will be 2-4 degrees warmer on Sunday with a weak to moderate south wind.
Temps could have otherwise been quite a bit cooler given that dewpoints had fallen into the teens. Slightly cooler conditions will be noticed farther east.
/issued 423 AM CST Sat Jan 4 2020/ Early morning GOES water vapor imagery showed a compact upper low centered near St. 500mb temps will drop to -25C over northern portions of the Midsouth, near the passing trof axis. Skies should quickly clear behind the trof axis and with loss of surface heating. Southerly flow will return tonight around the northwest periphery of a 1028mb surface pressure ridge.
/issued 436 AM CST Sat Jan 4 2020/ Once again high pressure is settling in across the region this morning. This afternoon will see mostly clear skies as temperatures recover into the low to mid 60s along the I-10 corridor and near 60 in central Louisiana and the lakes region of southeast Texas. The weather will remain quiet into Sunday though winds will swing around to the south as high pressure moves over the Florida Panhandle.
531 AM CST Sat Jan 4 2020 Weak ridging and WAA prevail today as southerly winds bring warmer than average temperatures into the area. The main impacts this weekend will be attached to our next clipper system and associated cold front that will push through the region late tonight and through the day on Sunday. The current forecast will keep the highest wind gusts to higher elevations west of the Red River Valley. Overall impacts will remain toward the low end of the spectrum (although just a bit of snow and drifting does lead to hazardous travel at times). Guidance indicates zonal flow with multiple long wave troughs propagating from west to east across the CONUS. KDVL will see the highest likelihood of impacts as wind gusts could approach 50 knots during the overnight and early Sunday morning hours.
534 AM CST Sat Jan 4 2020 Latest water vapor imagery is showing a closed low moving southeast across southeast Iowa early this morning. The upper low will open up and move quickly off to the east this afternoon allowing for clearing west of the Mississippi. Temperatures will warm up into the upper 40s and lower 50s ahead of the attendant cold front that will pass through during the day.
329 AM MST Sat Jan 4 2020 Large high pressure moving through the area will result in dry weather and slightly above normal highs through the weekend.
SHORT TERM (Today through Sunday): A quiet short term period is expected as high pressure spreads over the area along with plenty of dry air. High temps for today are pegged for the lower 70s, increasing into the mid 70s on Sunday, though it will be a few degrees cooler than this along the coast. Overnight low temperatures tonight will be mainly in the mid 40s inland to the lower or mid 50s along the coast.
/Issued 256 AM EST Sat Jan 4 2020/ Showers continue across the forecast area ahead of the next cold front that will enter the area later this morning. The upper trough axis will then swing through the area this afternoon/evening. Given strong CAA and cold 850mb temps, some light snow showers will be possible in the higher elevations during this time before moisture scours out by 02-04z. Very limited impacts are thus anticipated in these areas, though a few isolated slick spots cannot be ruled out in these higher elevations, primarily on any lesser- traveled bridges/elevated roadways through Sunday morning.
528 AM CST Sat Jan 4 2020 Upper ridging will build over the region today pulling up some warmer air on southwest surface winds ahead of an incoming front. Winds could mix down in the higher elevations west of the Missouri and then again along the Coteau while missing much of the rest of the area. Quieter, but cooler, conditions are expected for Sunday as hig pressure builds in at the sfc.
Precipitation is moving through NorCal early this morning as a weak upper level trough impacts the region. Another weak upper trough will move through the PacNW Saturday night into Sunday, bringing a slight chance of showers to the Coastal Range, Shasta County mountains, and southern Cascades.
/issued 323 AM CST Sat Jan 4 2020/ Upper trough passing out of TX into the MS Valley this morning with high pressure building in from the west. Later today a mid latitude trough moves across flattening out the ridge. Another trough moves ashore CA Sunday and quickly moves east pushing the ridge farther southward.
Road temperatures should stay above freezing throughout the day helping to limit any travel issues.
With the passing short wave trough, these stronger winds have already mixed down to the surface early this morning at our higher elevations of SW Phillips County.
400 AM CST Sat Jan 4 2020 A very wet spell will end today, as a cold front continues moving across the area. However cooler air poised just to the west and northwest will move in, and basically keep temperatures at what they are now, but falling in the later morning and afternoon as cold air advection really takes hold. This would affect mainly the higher elevations of the Cumberland Plateau in southern middle Tennessee, or far NE Alabama for a short period this afternoon. One such system as an upper trough will amplify as it moves across the region today into Sunday. Colder air west of this trough will only have a brief time to impact this region, with low temperatures tonight only cooling to around 30. Low temperatures Saturday night will be a bit warmer into the low/mid 30s.
Low pressure system in western Canada is dragging cold front across the region in very progressive flow regime. Sfc cold front is reaching the Blue Mtn foothills about now (1100Z). Overall pattern is close to westerly flow as region remains under influence of quick flow wedged between subtropical Pacific ridge and Gulf of Alaska low.
It is bringing a wind shift out of the northwest and will scour out the last of the low clouds and light rain showers through the morning hours. Building high pressure with clear skies and light winds overnight will allow for good radiational cooling, although wet ground conditions may prevent ideal conditions for temperatures to drop too low.
427 AM MST Sat Jan 4 2020 Latest analysis shows an upper ridge building over the region from the west. At the surface, high pressure is centered over western Colorado with a lee side trough to the east of the Rockies. A cold front will enter the northwestern parts of the forecast area late this afternoon and will rapidly move southeastward across the region tonight. With the lack of snow cover over parts of northwestern South Dakota and along the northern and eastern foothills, the Grassland Fire Danger will reach the High to Very High categories over parts of those areas this afternoon. The next upper trough will cross the area on Sunday night.
/issued 256 AM CST Sat Jan 4 2020/ (Today and Tonight) Dry weather with warmer temperatures over the next 24 hours. Upper level ridging will begin to move into the area today and tonight.
A line of showers and thunderstorms is pushing across the peninsula ahead of a cold front.
A dry cold front will swing through Central California late tonight into Sunday morning. A cold front will approach Central California today. The aforementioned cold front will pass through Central California late tonight into Sunday morning. All precipitation associated with this cold front will remain north of Central California. High temperatures Sunday afternoon will be seven to ten degrees cooler than this afternoon.
These winds over fresh snow cover should aid in limiting highs to the lower 30s where depth is 1-2 inches, while little/no snow areas south expected to reach mid to upper 30s for highs and can't rule out near 40 far south should more solar insolation occur than forecasted. Sunday and Sunday night: Cold front sweeps through Sunday with winds turning strong and gusty with tightening pressure gradient. Winds look to gradually diminish Sunday night as high pressure builds in.
326 AM CST Sat Jan 4 2020 Latest water vapor imagery is showing a closed low moving southeast across southeast Iowa early this morning. The upper low will open up and move quickly off to the east this afternoon allowing for clearing west of the Mississippi. Temperatures will warm up into the upper 40s and lower 50s ahead of the attendant cold front that will pass through during the day.
426 AM PST Sat Jan 4 2020 High pressure aloft will bring generally clear skies and mild weather this weekend.
336 AM CST Sat Jan 4 2020 Upper ridging will build over the region today pulling up some warmer air on southwest surface winds ahead of an incoming front. Winds could mix down in the higher elevations west of the Missouri and then again along the Coteau while missing much of the rest of the area. Quieter, but cooler, conditions are expected for Sunday as hig pressure builds in at the sfc.
Large high pressure moving through the area will result in dry weather and slightly above normal highs through the weekend.
Little significant change is expected the next 24 hours, with the exception of light north winds veering to southeast by Sunday as broad high pressure over the area shifts east. /issued 403 AM CST Sat Jan 4 2020/ SHORT TERM (Today through Sunday): A quiet short term period is expected as high pressure spreads over the area along with plenty of dry air. High temps for today are pegged for the lower 70s, increasing into the mid 70s on Sunday, though it will be a few degrees cooler than this along the coast. Overnight low temperatures tonight will be mainly in the mid 40s inland to the lower or mid 50s along the coast.
302 AM MST Sat Jan 4 2020 Latest analysis shows an upper ridge building over the region from the west. At the surface, high pressure is centered over western Colorado with a lee side trough to the east of the Rockies. A cold front will enter the northwestern parts of the forecast area late this afternoon and will rapidly move southeastward across the region tonight. With the lack of snow cover over parts of northwestern South Dakota and along the northern and eastern foothills, the Grassland Fire Danger will reach the High to Very High categories over parts of those areas this afternoon. The next upper trough will cross the area on Sunday night.
Strong Cold Front Approaching Central Florida. Morning RAOBs show a saturated H100-H70 lyr at KJAX/KTAE assocd with the approaching cold front. Brisk S/SW flow prevails acrs central FL while low clouds Stout SSW flow continues ahead of an approaching cold front.