Aikyam-Lab/Synoptic-Bench huggingface dataset:
Pockets of freezing rain are expected near the Cascades. Radar and satellite observations show the cold front begging to push east of the Cascades just before 10:00 AM this morning. The higher intensity snowfall may also cool the pavement with it becoming snow covered rapidly. Winds will become gusty with cold front passage in the afternoon, but all guidance is in good agreement that we will see gusts below what is typical for what is needed for an advisory. /SVH 18Z TAFS: A cold front will sweep across eastern Washington and into the Idaho Panhandle this afternoon.
As sunshine returns, slightly warmer weather can be expected with high temperatures in the upper 30s to mid 40s.
However, this looks to be a temporary warm up as we are already starting to see our next cold front pushing through the southeast.
354 PM EST Thu Jan 20 2022 It has been a very active day on radar, with showers and thunderstorms proliferating across the Lower Keys and surrounding coastal waters. The first question for tonight is how much the atmosphere will be able to recover from all the activity that has proliferated near the Lower Keys today. Winds are expected to back to the northeast and bring some of the warmer air brought in by the southeasterly winds today back over the cooler waters to the north of the island chain. Looking farther ahead, the warm front and associated moisture will linger near the Florida Keys through the first half of the weekend.
341 PM EST Thu Jan 20 2022 Arctic high pressure will gradually build into the area through Friday and then move south over the weekend.
1002 AM PST Thu Jan 20 2022 Warmer weather is in store for today, with gusty northeasterly Santa Ana winds in the mountains and foothills.
For the remainder of the afternoon, the cwa will continue to see cloud cover thin out and dissipate from west to the east as the strong area of high pressure east of the region, continues a slow trudge eastward.
Pockets of freezing rain are expected near the Cascades. /SVH /issued 1030 AM PST Thu Jan 20 2022/ Radar and satellite observations show the cold front begging to push east of the Cascades just before 10:00 AM this morning. The higher intensity snowfall may also cool the pavement with it becoming snow covered rapidly. Winds will become gusty with cold front passage in the afternoon, but all guidance is in good agreement that we will see gusts below what is typical for what is needed for an advisory. /SVH 18Z TAFS: A cold front will sweep across eastern Washington and into the Idaho Panhandle this afternoon.
Areas of freezing fog are forecast to develop for many valley locations across the region for the Friday morning commute. Slick spots can be expected on area roads tomorrow morning, due to the freezing fog and residual moisture from today, freezing to the roads surfaces. A ridge of high pressure will build over the Northern Rockies by the end of the day Friday, and will remain over the region through the weekend. Expect weak valley inversions to setup, with freezing fog being common each morning.
207 PM CST Thu Jan 20 2022 A cold pattern will be in place across Middle Tennessee through the next 7 days as a long wave trough hangs over the central and eastern states. Temps had remained quite cold with afternoon readings only in the low to mid 20s and wind chills down in the teens.
213 PM MST Thu Jan 20 2022 Current surface map places warm front across eastern Montana into far western South Dakota. Splitting upper trof drops across the Rockies tonight, with northern portion of the trof moving into the eastern Dakotas Friday. with 2-3" of snow for the higher elevations of the northern Black Hills. Initial cold front comes through Friday morning.
There isn't a whole lot of moisture to work with ahead of this wave with the P-wat plume off of the eastern Pacific shifting southeast with the exiting cold front. Mid level lapse rates will steepen with colder temperatures moving in under the colder upper level trough. The strengthening inversions with large scale subsidence moving in with the ridge will keep low clouds present over much of the Inland Northwest through day Friday and into Friday night.
Winds gradually veer toward an easterly component overnight as high pressure slowly approaches the region. High pressure anchored over the region then ensures mostly clear skies and light winds Friday. Tough to really envision or message much in the way of snowfall accumulation, however very cold temperatures in the upper teens could create a few isolated slick spots during the evening commute with any refreezing of trace moisture. Expecting that once flow gets choked off or subsides due to the anticyclone that clouds will scour out tonight. Will continue to call for temperatures in the lower single digits above zero over the urban heat island/south of I 96, to below zero temperatures north of Metro Detroit.
529 PM CST Thu Jan 20 2022 Highlights: 1) Cool start Fri: Temps in single digits & wind chills of 0 to -10 2) Gradual warm up for the weekend A ridge will move into the Central Plains tonight while a trough drops south along the Front Range. Another chilly night is expected with lows dropping to the single digits and calculated wind chills from 0 to -10 with the lowest values in north central Kansas. The trough mentioned above will essentially split with the northern portion tracking across the Northern Plains and a southern part heading to the Great Basin then Desert Southwest through the weekend.
/NF/ Tonight and Friday: mid afternoon surface analysis had a rather stout 1040mb high centered over Iowa that was ridging back across the southern Plains. This high will shift east through Friday and continue to ridge back across our region. Some of this light precipitation may skirt the southern portions of our southeast most counties toward daybreak Friday in the form of light freezing rain and/or light freezing drizzle but no very little to no accumulation is expected in our CWA. Lows tonight will range from the lower 20s northwest to near 30F southeast. Highs Friday will be in the upper 30s north and along the Mississippi river basin and in the lower 40s elsewhere.
This will be the thing to watch tomorrow with snow amounts possibly reaching some of the lower criteria zones.
As a 1042 mb Arctic high pressure system shifts east of the region tonight, warm air advection will be quick to increase over the area. This trough could bring the area a few flurries or even light snowfall accumulations (under 0.
Breezy south winds return on Friday, pushing temperatures back above freezing.
A disturbance remains on target to move east through the area this evening, bringing a combination of freezing rain, sleet, snow and rain. Current Winter Weather Advisory looks good as up to an inch of snow, sleet and freezing rain can be expected most places. Then a cold front will sweep through early Friday.
908 PM EST Thu Jan 20 2022 High pressure will result in very cold and mostly dry conditions through this weekend. The focus for this portion of the forecast will be the continued very cold conditions as broad high pressure maintains a period of dry weather.
Swly winds and warm advection will then begin by late Fri AM as the high moves away and low pressure tracks across srn Canada. Gehring (Issued 235 PM CST Thu Jan 20 2022) Tonight and Friday: Clear skies will continue tonight into Friday, as high pressure moves through the region.
Sunny and cold conditions were found across the area this afternoon as an arctic high pressure was centered just west of the area.
May get a quick covering next hour or two as temperatures will stay below freezing.
727 PM CST Thu Jan 20 2022 Colder weather will persist through the end of the week as strong Canadian high pressure remains settled over the Midwest. Overnight lows will be below zero northwest of the Illinois river to the lower teens in the southeast.
Cloud cover is also expected to thin out from northeast to southwest overnight, which will lead to very chilly low temperatures in the low to mid teens across the Upper Cumberland and our northern counties. Where cloud cover persists longer in the south, lows will be a tad "warmer" in the upper teens to low 20s.
635 PM EST Thu Jan 20 2022 High pressure will result in very cold and mostly dry conditions through this weekend. The focus for this portion of the forecast will be the continued very cold conditions as broad high pressure maintains a period of dry weather.
A cold pattern will be in place across Middle Tennessee through the next 7 days as a long wave trough hangs over the central and eastern states. Temps had remained quite cold with afternoon readings only in the low to mid 20s and wind chills down in the teens.
Meanwhile, an upper level disturbance will bring a moist and relatively warmer layer over across the cold surface layer. There is a small potential for either freezing rain or sleet to mix in with the light rain, with the better chance for this to occur at KLFT/KARA during the overnight.
859 PM EST Thu Jan 20 2022 Arctic high pressure will gradually build into the area through Friday and then move south over the weekend.
354 PM CST Thu Jan 20 2022 Tonight and Friday: mid afternoon surface analysis had a rather stout 1040mb high centered over Iowa that was ridging back across the southern Plains. This high will shift east through Friday and continue to ridge back across our region. Some of this light precipitation may skirt the southern portions of our southeast most counties toward daybreak Friday in the form of light freezing rain and/or light freezing drizzle but no very little to no accumulation is expected in our CWA. Lows tonight will range from the lower 20s northwest to near 30F southeast. Highs Friday will be in the upper 30s north and along the Mississippi river basin and in the lower 40s elsewhere.
543 PM CST Thu Jan 20 2022 (This evening through Friday) Dry and very cold tonight, a little warmer on Friday. Mid/upper trough axis will move across the area this evening, with cloud cover gradually decreasing overnight.
631 PM EST Thu Jan 20 2022 Arctic high pressure will gradually build into the area through Friday and then move south over the weekend.
Snow showers Friday afternoon and evening behind the cold front coming down will be with some strong northwesterly winds, but coverage will be hit or miss. The center of low pressure figures to be weak though, so more robust winds would not be expected and impacts during the overnight should be minimal. Sun night into Mon system looks to be a sharper clipper with the low center moving through the state of North Dakota, while offering more in the way of FGEN and banding potential. Some moderation to follow for Wed, then 500 mb heights start to trend warmer than average by Thu, associated with daytime highs once again rising into the 20s.
510 PM CST Thu Jan 20 2022 Colder weather will persist through the end of the week as strong Canadian high pressure remains settled over the Midwest. Overnight lows will be below zero northwest of the Illinois river to the lower teens in the southeast.
Friday morning as the trough centers over east-central NV snow showers across Elko County will begin to diminish, with flurries or light showers beginning over portions of White Pine County. Dry conditions are expected across the CWA Friday night, with cooler overnight lows as clouds diminish and northerly flow continues.
Look for strengthening offshore winds in the higher terrain of the Bay Area heading into late week with warming daytime temperatures. Winds over the higher terrain have weakened, but that will be short-lived. As the upper low takes shape over SoCal upper level high pressure rebuilds over the PacNW.
443 PM MST Thu Jan 20 2022 Current surface map places warm front across eastern Montana into far western South Dakota. Splitting upper trof drops across the Rockies tonight, with northern portion of the trof moving into the eastern Dakotas Friday. with 2-3" of snow for the higher elevations of the northern Black Hills. Initial cold front comes through Friday morning.
311 PM CST Thu Jan 20 2022 Highlights: 1) Cool start Fri: Temps in single digits & wind chills of 0 to -10 2) Gradual warm up for the weekend A ridge will move into the Central Plains tonight while a trough drops south along the Front Range. Another chilly night is expected with lows dropping to the single digits and calculated wind chills from 0 to -10 with the lowest values in north central Kansas. The trough mentioned above will essentially split with the northern portion tracking across the Northern Plains and a southern part heading to the Great Basin then Desert Southwest through the weekend.
Moisture will continue to overspread the area ahead of a cold front tonight and Friday leading to some areas of fog late tonight into Friday morning. A few more showers will be possible over southwest Florida this evening where moisture is deeper, otherwise we'll see some showers move into the northern coastal waters and eventually Nature Coast overnight ahead of the cold front.
Winds begin to shift today as a cold front works through the area from SW to NE. Conditions are conducive for fog this morning before a cold front works through the area today.
Temperatures stay cold Friday but calm winds under high pressure should keep wind chill values Friday night in the double digits. Saturday will finally get above freezing during the day with lows in the lower 20s Saturday night.
Clear skies continue today with highs in the mid 20s far north to the low 30s southwest. Another chilly night tonight, but cloud cover and a warmer airmass overhead will keep lows in the teens (perhaps some single digits in the cold valleys of the eastern CWA).
Pcpn will decrease overnight, and higher elevations will become sharply colder as the upper trough moves through. Low elevations will become warmer first as the inversion mixes out, then turn colder toward morning after pcpn ends. Mostly clear Friday evening, then areas of valley fog late Friday night, and significantly colder in the higher basins. Upper ridge along the coast will build inland this weekend with inversion conditions forming again in the valleys, and areas of fog during the nights and mornings with mostly clear skies above.
1010 PM EST Thu Jan 20 2022 A weak warm front lifting over the islands induced showers over the local waters and islands; light to moderate rainfall was observed with limited lightning strikes. Until this evening, the warm front created veering winds from 1 kft to 10 kft. Unsettled weather conditions will persist through the weekend due to the low level moisture and an approaching cold front on Saturday. A warm front near the vicinity of the Keys could cause breezes to briefly veer back to the southeast. The warm front is forecast to interact with a developing low pressure system in the Gulf of Mexico.
This was occurring ahead of a mid level trough extending from Saskatchewan Canada back through northern Nevada. The mid level trough will swing eastward through the Dakotas and Nebraska today.
1156 PM EST Thu Jan 20 2022 Slightly drier northeast flow remains in place overnight, downstream of high pressure building toward the region. Presence of high pressure on Friday then ensures mostly clear skies and light winds throughout the daylight period. Tough to really envision or message much in the way of snowfall accumulation, however very cold temperatures in the upper teens could create a few isolated slick spots during the evening commute with any refreezing of trace moisture. Expecting that once flow gets choked off or subsides due to the anticyclone that clouds will scour out tonight. Will continue to call for temperatures in the lower single digits above zero over the urban heat island/south of I 96, to below zero temperatures north of Metro Detroit.
Areas just to our nw across central and ern OK where skies have cleared already experiencing temps in the low 20s. Clouds across our nrn areas, mainly along and n of I-30, could reasonably clear out as the upper trof axis continues to shift ewd tonight, which would allow for temps to bottom out. Elsewhere, mid-level clouds appear likely to hold on, and thus temps remain a bit warmer.
As the high moves east this afternoon, winds from the south- southwest increase and move the lake effect snow band toward the West Michigan shore. Weak subsidence due to the high/ridging today should continue to erode the cloud cover, while increasing south winds will make an attempt to bring that drier and cloud-free air in northern Indiana/Ohio our way.
240 AM CST Fri Jan 21 2022 Today will be warmer with highs in the upper teens to 20s.
The new southern stream trough drops southward over southern Nevada and becomes cut off from the main flow tonight. High temperatures will be about 10 degrees warmer than yesterday with mostly sunny skies. High clouds, associated with the aforementioned trough, reach northwest Oklahoma around mid- day and will spread across northern Oklahoma by this evening.
High pressure is building south from the Upper Midwest and Mississippi Valley this evening as upper trough slowly moves eastward across the Tennessee Valley.
943 PM MST Thu Jan 20 2022 Light freezing rain has developed in SE Montana and ground truth reports show road conditions deteriorating. Looking at CAMs and thermal profiles over NW South Dakota: it is likely freezing rain will be the predominate precipitation type in the area overnight. Therefore, issued a Winter Weather Advisory for light ice accumulations as this band of freezing rain crosses the area. Current surface map places warm front across eastern Montana into far western South Dakota. Splitting upper trof drops across the Rockies tonight, with northern portion of the trof moving into the eastern Dakotas Friday. with 2-3" of snow for the higher elevations of the northern Black Hills. Initial cold front comes through Friday morning.
324 AM EST Fri Jan 21 2022 High pressure will build into the region today with an Arctic airmass moving overhead.
Western Iowa could have slightly cooler wind chills, around -15 to -25, where wind speeds increase over lingering snow-cover. Highs are expected to reach the low 20s in western Iowa, and the upper 20s over eastern Nebraska.
1108 PM CST Thu Jan 20 2022 Colder weather will persist through the end of the week as strong Canadian high pressure remains settled over the Midwest. Overnight lows will be below zero northwest of the Illinois river to the lower teens in the southeast.
1250 AM EST Fri Jan 21 2022 Arctic high pressure will gradually build into the area through Friday and then move south over the weekend.
1042 PM CST Thu Jan 20 2022 (This evening through Friday) Dry and very cold tonight, a little warmer on Friday. Mid/upper trough axis will move across the area this evening, with cloud cover gradually decreasing overnight.
The Metro areas have not reported any wintry precipitation since the evening hours and temperatures have actually risen into and remained in the mid-30s (above freezing) in both Austin and San Antonio.
Expect these clouds to begin to dissipate as warm air advection associated with a sharp mid-level ridge advances east toward the region later this evening. Broad eastern CONUS troughing holds over the area, although the first part of the weekend will be dry. We'll start out in the single digits in our east to the low to mid teens elsewhere. Despite the slow start, temps are expected to rise back to the low and mid 30s under partly to mostly sunny skies and a steady SW surface wind. Saturday night lows will again be chilly, but a little warmer than the previous night.
cold front looks to lay along the Wyoming/Nebraska state line this morning. Dry for the weekend as high pressure builds over the Rockies.
(Today and tonight) Currently, we have very cold temperatures around the area early this morning, ranging from the teens to around 20 degrees, except for areas that have managed to keep low clouds, where temperatures are a few degrees warmer. Lows tonight are expected to range from the upper teens into the lower 20s.
/Issued 243 PM CST Thu Jan 20 2022/ /Friday Night Onward/ Low temperatures overnight Friday will bottom out in the low to mid 20s, thanks to efficient radiational cooling conditions with clear skies and light winds. A slow warming trend will continue over this weekend as high pressure sets in and higher heights build over North and Central Texas.
Slightly warmer for Saturday with light snow most possible in Southern Lower Michigan.
Wind field will become increasing unsupportive of lake effect snow showers over next several hours as weak east-northeast low level synoptic flow develops in response to broad low level anticyclone building in across the Upper Midwest.
The low level stratus continues to linger along the plateau and will likely stick around until at least the afternoon hours today. North winds will remain 5-10 mph which will only allow wind chill values to rise into the lower 20s.
Areas just to our nw across central and ern OK where skies have cleared already experiencing temps in the low 20s. Clouds across our nrn areas, mainly along and n of I-30, could reasonably clear out as the upper trof axis continues to shift ewd tonight, which would allow for temps to bottom out. Elsehwere, mid-level clouds appear likely to hold on, and thus temps remain a bit warmer.
Arctic high pressure has settled from the Great Lakes into the Mid Mississippi Valley. There is still a decent pressure gradient across the region producing brisk north winds and wind chills in the low single digits across northern areas of the Mid-South this morning. The mean upper trough will be centered over the eastern US through the period with cold air masses being replenished across our region every few days.
High pressure is building south from the Upper Midwest and Mississippi Valley this evening as upper trough slowly moves eastward across the Tennessee Valley. Discussion: As of 3PM this afternoon cloudy and cold weather conditions are being observed with many locations near or below freezing. High pressure to our northwest will continue to sink south tonight and on Friday bringing tranquil weather conditions to the area. While the cold front has pushed much of the deep layer moisture to our east, low level moisture should continue to promote mostly cloudy skies for tonight and a good portion of Friday. Overnight lows will drop into the teens to lower 20's north of I-40, and into the low to mid 20's generally south of I-40. Temperatures on Friday will likely be similar to today or maybe only a degree or two warmer.
1045 PM MST Thu Jan 20 2022 Light freezing rain has developed in SE Montana and ground truth reports show road conditions deteriorating. Looking at CAMs and thermal profiles over NW South Dakota: it is likely freezing rain will be the predominate precipitation type in the area overnight. Therefore, issued a Winter Weather Advisory for light ice accumulations as this band of freezing rain crosses the area. Current surface map places warm front across eastern Montana into far western South Dakota. Splitting upper trof drops across the Rockies tonight, with northern portion of the trof moving into the eastern Dakotas Friday. with 2-3" of snow for the higher elevations of the northern Black Hills. Initial cold front comes through Friday morning.
Therefore, warmer temperatures will occur. While still 10+ degrees below normal for the date, they will be about 10 degrees warmer than we are experiencing this afternoon. Gosselin A weak cold front is forecast to come through the area late Saturday, though the only impact should be an increase in mid/high level cloudiness. Behind this front, there isn't really any "cooler" air as the air mass is Pacific in origin.
There is lingering light snow from an exiting cold front. Also, look for patchy freezing fog for the Snake Plain and valleys this morning. Otherwise, look for high pressure to build in bringing overall northerly flow, dry conditions, and cooler temperatures for our area. Saturday morning patchy freezing fog is possible for the Snake Plain/Eastern Magic valley and valleys mainly across our southern areas along the Utah border.
515 AM CST Fri Jan 21 2022 Today will be warmer with highs in the upper teens to 20s.