Aikyam-Lab/Synoptic-Bench huggingface dataset:
309 PM CST Thu Jan 28 2021 The region is currently situated between high pressure to the east and elongated low pressure to the west. This low level saturation looks to build further to the west overnight as H85 temps continue to warm, so expect the lower clouds will develop in those areas, along with the potential for some fog. The warming continues through the day Friday, then will see cooler air begin to move in Friday night as the trough to the west reaches the Central Plains, with the southern part of it strengthening into a closed low over the OK/TX panhandles. Low temperatures tonight will be in the lower to mid teens, with highs on Friday ranging from the mid 20s across west central Minnesota, to the upper 30s across south central South Dakota.
18Z surface data has high pressure from Lake Superior down to the Gulf Coast with a weak boundary across western Iowa. Quiet conditions will be seen from late this afternoon through Friday night as high pressure moves into the eastern Great Lakes.
To the west, our next trough continues to spread heavy rain and snow across portions of California.
/Issued 304 PM CST Thu Jan 28 2021/ The low clouds have finally cleared, which has allowed temperatures to warm into the 40s this afternoon. Windy and warmer weather is on tap for Friday despite a fair amount of high level cloudiness.
/Issued 238 PM EST Thu Jan 28 2021/ High pressure and cold air are all that's left from the low pressure system that has exited from the beginning of the week. Temperatures are expected to rebound back into the low 50s tomorrow across N.
420 PM MST Thu Jan 28 2021 A broad upper ridge remains over the forecast area this afternoon and the surface warm front has pushed to the east of the Black Hills. Southwesterly downslope winds have pushed temperatures into the lower 40s to lower 50s to the SW of the front while southeasterly winds to the NE of the front have kept temps mainly in the 20s.
The region is currently situated between high pressure to the east and elongated low pressure to the west. This low level saturation looks to build further to the west overnight as H85 temps continue to warm, so expect the lower clouds will develop in those areas, along with the potential for some fog. The warming continues through the day Friday, then will see cooler air begin to move in Friday night as the trough to the west reaches the Central Plains, with the southern part of it strengthening into a closed low over the OK/TX panhandles. Low temperatures tonight will be in the lower to mid teens, with highs on Friday ranging from the mid 20s across west central Minnesota, to the upper 30s across south central South Dakota.
237 PM MST Thu Jan 28 2021 A broad upper ridge remains over the forecast area this afternoon and the surface warm front has pushed to the east of the Black Hills. Southwesterly downslope winds have pushed temperatures into the lower 40s to lower 50s to the SW of the front while southeasterly winds to the NE of the front have kept temps mainly in the 20s.
Lee side troughing amplifies tomorrow thus bringing temps up and keeping the low levels dry.
Warmer temperatures return tomorrow with highs in the 40s.
Kept temperatures on the low side of guidance, based on trends. As H5 ridging increases, increasing subsidence, likely will see a thinning of stratus deck, though low level moist advection will continue. Due to potential for clouds kept temperatures slightly cooler than 50 percentile temperatures, with lower to mid 30s common.
/issued 224 PM CST Thu Jan 28 2021/ Southerly winds will bring warmer temperatures today and especially tomorrow when highs in many locations exceed 70 degrees. Extrapolating 850mb temps to the surface from all models yields higher temperatures than NBM output so increased highs a few degrees with it possibly being even warmer depending on cloud cover.
A strong area of high pressure remains in place in guidance on Friday.
Expect scattered showers with isolated thunderstorms through the day on Friday in the San Joaquin Valley and Sierra Nevada foothills behind the cold front.
Increased moisture in this southerly flow causes stratus thicken in the lower layers of the atmosphere. Despite fog that will be slow to erode, temperatures on Friday warm several degrees, with highs near freezing. Fog is likely to return and this time freezing drizzle is likely given the depth of stratus and lack of saturation in the dendritic growth zone.
It has been on the cooler side with temperatures in the 40s or lower 50s today and a breezy north wind at times. Overnight lows should be at or below freezing areawide, with also some potential for widespread frost across the region. As the high shifts east, this will leave us on the western edge, and southerly flow will begin across the region again tomorrow. As a result, temperatures will be a little warmer with afternoon highs in the 50s, with even some upper 50s and possibly lower 60s in the south.
At the sfc, high pres centered over the midwest is ridging southward toward the NW gulf. 24 Ridging aloft and at the sfc will persist through Friday, maintaining the dry conditions. High clouds streaming over the region tonight will likely regulate cooling, although temperatures will still be on the chilly side with lows ranging from near freezing acrs cntl LA to the middle and upper 30s acrs the southern zones. Daytime highs on Friday will again be mild, with max temps from around 60 degrees acrs cntl LA into the lower 60s acrs much of SE TX and S LA.
An area of light precipitation will become more organized overnight along and north of this low, resulting in periodic light snow across much of the Northern Rockies beginning this evening.
Building Upper Ridge and surface ridging throughout the next 24 hours. Chattanooga Airport, TN 26 49 29 51 42 / 0 0 0 20 90 Knoxville McGhee Tyson Airport, TN 23 43 26 49 38 / 0 0 0 20 90 Oak Ridge, TN 22 44 26 49 37 / 0 0 0 30 90 Tri Cities Airport, TN 19 39 23 48 35 / 0 0 0 20 90.
Will see some flurries, with main risk of fog formation looks to be in central ND near the low cloud/clear line interface which runs from the Minot area to Jamestown.
Farther north into Shasta County, slightly cooler air has snow levels down to the 2500 to 3000 ft range. Aside some lingering snow showers into Friday morning in the Sierra south of Lake Tahoe, much of the area will see some sunshine return during the day tomorrow with temperatures warming to the low/mid 50s for the Sacramento and northern San Joaquin Valleys.
Low pressure will bring accumulating snow for much of central and northern Nevada tonight into tomorrow.
302 PM CST Thu Jan 28 2021 18Z surface data has high pressure from Lake Superior down to the Gulf Coast with a weak boundary across western Iowa. Quiet conditions will be seen from late this afternoon through Friday night as high pressure moves into the eastern Great Lakes.
304 PM CST Thu Jan 28 2021 The low clouds have finally cleared, which has allowed temperatures to warm into the 40s this afternoon. Windy and warmer weather is on tap for Friday despite a fair amount of high level cloudiness.
As a result, temperatures have struggled to rise any higher than the low to mid 20s for most locations. Temperatures were nudged down several degrees, and many locations will remain below freezing.
Temperatures will be cold tonight, but not quite as cold as the last few nights as relatively warmer air moves in.
632 PM EST Thu Jan 28 2021 A large high pressure area will continue to bring a cold north flow with partly to mostly cloudy skies tonight, although skies will clear across the southwest.
To our west, a deep trough located just off the Pacific coast is directing a stream of moisture through the California Sierra Mountains. By Friday, the west coast trough will shift inland and stronger southwest flow will overspread the Four Corners states. Expect an increase in wind speeds in the higher elevations, as well as thickening and lowering cloud cover through the day.
Southwest surface winds are forecast to increase and become gusty once again during the late morning hours Friday and continue through the afternoon as the pressure gradient remains tight across the region in response to a surface trof of low pressure over eastern CO and northeast NM. Lee side troughing amplifies tomorrow thus bringing temps up and keeping the low levels dry.
Warmer and relatively moist air is moving northward through KS and will advect over a dense snow pack across southern into central and north central Nebraska overnight. Temperatures will also be warmer in these areas, reaching the 40s to near 50 for highs. Obviously much colder where cloud cover and snow cover linger, but should crack the freezing mark even in those areas.
Quiet weather under a dry southwesterly flow continues into Friday as a deep upper level low continues to effect the Pacific coastline.
/issued 211 PM CST Thu Jan 28 2021/ A weak upper-level short wave trough noted on 18Z water vapor imagery entering into New Mexico from Mexico is progged to continue to move to the northeast. Lows tonight are expected to be slightly warmer, with temperatures bottoming out around freezing.
716 PM EST Thu Jan 28 2021 Strong high pressure centered near the lower Ohio Valley this evening will provide a stable dry and cool to cold flow. While seas offshore are still on the high side they will begin to decay as the winds shift and decrease. Have let the high risk of rip currents end at 7 pm. until a cold front approaches Sun night or Mon.
506 PM CST Thu Jan 28 2021 A low-level ridge axis will shift east of the forecast area this evening with low-level flow becoming south-southeasterly overnight allowing weak WAA to ensue. An upper-level ridge will approach the Midwest on Friday with mid- level height rises occurring over the region.
Low clouds are streaming northward along a moisture axis from eastern KS into this same area, converging into trough/wind shift across southern MN. While temperatures at the surface dont exhibit this, aloft a warm front and warm advection is occurring west of I-35. Thus, flurries look to be mainly the type should enough lift occur along the warm front in eastern MN/IA overnight. Worst case scenario some patchy freezing drizzle occurs.
323 PM CST Thu Jan 28 2021 Rather benign weather is expected through Friday, as an anomalously strong upper ridge continues progressing east over Mid-America.
545 PM CST Thu Jan 28 2021 Rather benign weather is expected through Friday, as an anomalously strong upper ridge continues progressing east over Mid-America.
449 PM MST Thu Jan 28 2021 The High Wind Warning will be allowed to expire at 500 PM. Quiet weather under a dry southwesterly flow continues into Friday as a deep upper level low continues to effect the Pacific coastline.
As the mid/upper level trough axis off of the coastline shifts eastward through the afternoon/evening, the AR will finally exit the region. Meanwhile, we will continue to see the potential for isolated to scattered showers and even a thunderstorm or two within the unstable air mass associated with trough as it pushes inland over the region. High pressure will then build over the region in wake of the exiting system allowing for a mix of sun and clouds for Friday afternoon with temperatures in the 50s.
Clear skies have returned to the area this afternoon as high pressure straddles the eastern Missouri and western Illinois border. Light southeast winds have developed on the backside of the high pressure, helping to bring temperatures up a few degrees relative to yesterday. This will keep overnight lows more mild tonight, ranging from the low/mid 20s over the eastern Ozarks to around 30 degrees over SE Kansas and far western Missouri. Breezy southerly winds are in store for Friday as the pressure gradient increases behind the departing high pressure system to our east. The strongest wind gusts will mainly be west of the Highway 65 corridor. Highs will be above average, ranging from the mid/upper 40s over the eastern CWA to the low 50s over the western half of the CWA.
247 PM MST Thu Jan 28 2021 Ridging across the central US has lead to warmer temperatures and dry conditions today.
The trend is for much warmer air over the extreme southwest counties late this afternoon, much like the HRRR model output. Highs can reach the low 60s over the Cimarron grasslands. and still only to just above the freezing point north of the K-96 corridor. The models that can produce visibility fields are all in agreement on a layer of freezing fog in the BL basically centered over northwest kansas.
Winds will pick up out of the southeast on Friday morning as high pressure moving off to the east begins to put us into onshore flow.
VFR at all sites through the next 24 hours with dry high pressure in control.
/issued 217 PM CST Thu Jan 28 2021/ SHORT TERM (Now through Friday Night): 500 mb and surface ridging will remain in control of conditions over the RGV/Deep South TX over the short term period. However, the low level flow will be shifting around from the E-SE which will allow for WAA to steadily increase over the area from off of the Gulf of Mex and NE Mex. Will lean towards the warmer ECMWF/NAM for temps throughout the short term.
Current temperatures are in the low to mid 30s. Morning lows are expected to be in the middle to upper 20s with wind chills about 5 degrees cooler, in the upper teens to mid 20s. Tomorrow should be a little warmer with highs in the mid 40s to mid 50s.
This cirrus should continue to drift eastward along an upper level ridge building across the region.
Highs this afternoon will generally be in the low to mid 60s, except across much of the Interstate 10 corridor, northwest Hill Country, and northern Edwards Plateau, where cloud cover may linger through a good portion of the afternoon. Some wind gusts over 40 mph are possible, especially across the higher terrain of the Big Country and Concho Valley. Expect overnight lows in the low to mid 50s, which is 15 to 20 degrees above normal. In addition, a few showers are possible after midnight, with the best chance across the Big Country, as an upper level trough approaches the Southern Plains.
Otherwise, warm advection continues today and tonight as mid-level ridging spreads across the area with increasing deep southerly flow. Despite the cloud cover, seasonable highs in the 20s are expected today with milder overnight lows in the teens and 20s tonight with breezy southerly winds ahead of low pressure developing to the west.
Rather benign weather is expected through Friday, as an anomalously strong upper ridge continues progressing east over Mid-America.
850 mb temps are on the upswing and as such, should be a little warmer today. cooler Plateau.
Otherwise, southwest surface winds are forecast to increase and become gusty once again during the late morning hours Friday and continue through the afternoon as the pressure gradient remains tight across the region in response to a surface trof of low pressure over eastern CO and northeast NM. Southwest surface winds are forecast to increase and become gusty once again during the late morning hours Friday and continue through the afternoon as the pressure gradient remains tight across the region in response to a surface trof of low pressure over eastern CO and northeast NM. Lee side troughing amplifies tomorrow thus bringing temps up and keeping the low levels dry.
However, we will expand the high wind watch to include Culberson Co and Davis Mtns, G55-65 mph. Downslope winds will keep temps above normal Sat followed by cooler wx Sun, but much less wind. Warmer Mon and Tue ahead of another wind storm on Wed, but much cooler temps Thur-Fri. A wind storm is expected across much of the area Sat as a strong trof moves thru in the morning.
Expect to see readings near or below freezing areawide by daybreak Friday morning. This cirrus should continue to drift eastward along an upper level ridge building across the region.
1013 PM EST Thu Jan 28 2021 A large high pressure area will continue to bring a cold north flow with partly to mostly cloudy skies tonight, although skies will clear across the southwest.
Broad high pressure builds continues to build across the Southeast U.
223 AM CST Fri Jan 29 2021 High pressure will move east of the region today through tonight. It will be a few degrees "warmer" today due to modest return flow.
Upper level ridging over TX will slowly slide east through the near term while northwest flow continues to dominate the CWA.
Current radar and infrared satellite imagery shows mostly cloudy skies across the CWA as an area of low pressure and the associated trough slowly travels south along the PNW coast. The trough will dig overnight along the Northern CA coast before pushing onshore just south of the San Francisco Bay Area Friday morning. As the system moves through CA, the trough axis will be right over our area before it begins to shift east to allow a transient ridge to briefly set up. The associated moisture should stay relatively close to the low pressure center, with only the extreme S/SE OR having a chance of picking up some light mountain snowfall overnight and into the early morning hours on Friday. The transient ridge continues east with the trough, opening the door to another system approaching from the NW.
936 PM CST Thu Jan 28 2021 Based on cloud cover and current obs, bumped up the low temperatures a couple degrees along the I-10 corridor. At the sfc, high pres centered over the midwest is ridging southward toward the NW gulf. 24 Ridging aloft and at the sfc will persist through Friday, maintaining the dry conditions. High clouds streaming over the region tonight will likely regulate cooling, although temperatures will still be on the chilly side with lows ranging from near freezing acrs cntl LA to the middle and upper 30s acrs the southern zones. Daytime highs on Friday will again be mild, with max temps from around 60 degrees acrs cntl LA into the lower 60s acrs much of SE TX and S LA.
- Very cold temps tonight With the high pressure system centered over the state today.
A quiet aviation period through the next 24 hours as high pressure brings VFR flight conditions. Diegan Chattanooga Airport, TN 26 49 29 51 42 / 0 0 0 20 90 Knoxville McGhee Tyson Airport, TN 23 43 26 49 38 / 0 0 0 20 90 Oak Ridge, TN 22 44 26 49 37 / 0 0 0 30 90 Tri Cities Airport, TN 19 39 23 48 35 / 0 0 0 20 90.
1026 PM EST Thu Jan 28 2021 Winds have turned northeast across the Keys as strong high pressure over the Midwest and a deep maritime storm well east of the Mid Atlantic states departs to the east-northeast. Temperatures were in the upper 60s with dewpoints as low as the mid 40s in the Lower Keys. Cool advection over the lower 70s Florida Bay temperatures is likely to cause some increase in gustiness from the evening lull, with gusts 25 to 30 mph occurring from local observation sites with better waterfront exposure.
Upper level low over the Northeast will slide slowly east southeastward through tonight. An upper level ridge extended from the southwestern Gulf northward through the northern Plains, and this ridge will slide slowly eastward through tonight. At the surface, high pressure centered over the Ohio Valley will weaken and shift eastward over the Mid Atlantic states tonight. Frosty conditions across the interior this morning with lows around freezing will warm up to the mid 50s to lower 60s, warmest across interior northeast Florida. Temperatures will get near the freezing mark across interior southeast Georgia and the mid to upper 30s across interior northeast Florida.
/issued 936 PM CST Thu Jan 28 2021/ Based on cloud cover and current obs, bumped up the low temperatures a couple degrees along the I-10 corridor. At the sfc, high pres centered over the midwest is ridging southward toward the NW gulf. 24 Ridging aloft and at the sfc will persist through Friday, maintaining the dry conditions. High clouds streaming over the region tonight will likely regulate cooling, although temperatures will still be on the chilly side with lows ranging from near freezing acrs cntl LA to the middle and upper 30s acrs the southern zones. Daytime highs on Friday will again be mild, with max temps from around 60 degrees acrs cntl LA into the lower 60s acrs much of SE TX and S LA.
942 PM CST Thu Jan 28 2021 A low-level ridge axis will shift east of the forecast area this evening with low-level flow becoming south-southeasterly overnight allowing weak WAA to ensue. An upper-level ridge will approach the Midwest on Friday with mid- level height rises occurring over the region.
855 PM MST Thu Jan 28 2021 It has been a quiet evening under ridging aloft in northeast Colorado. The forecast area is now almost directly under the ridge axis as the next trough is close to coming onshore in the Pacific Northwest. Ridging across the central US has lead to warmer temperatures and dry conditions today.
A gusty NW wind 25-35 mph will add to the bitter chill with midday wind chills in the low single digits and teens.
1014 PM MST Thu Jan 28 2021 The High Wind Warning will be allowed to expire at 500 PM. Quiet weather under a dry southwesterly flow continues into Friday as a deep upper level low continues to effect the Pacific coastline.
1024 PM MST Thu Jan 28 2021 A broad upper ridge remains over the forecast area this afternoon and the surface warm front has pushed to the east of the Black Hills. Southwesterly downslope winds have pushed temperatures into the lower 40s to lower 50s to the SW of the front while southeasterly winds to the NE of the front have kept temps mainly in the 20s.
Already some spots down to a 1/4sm and with temps below freezing, concerns for bridges, overpasses, etc to become slick overnight.
A ridge of high pressure building over the region is keeping clear skies, and chilly temperatures the Sunshine State this morning. Current temperatures ranging from the low to mid 30s north to the 40s elsewhere, but do not worry because conditions will be too dry for any frost concerns during this time. Upper to mid level high pressure will continue to build along the East Coast going into the weekend bringing a gradual warm up in temperatures.
1219 AM EST Fri Jan 29 2021 A large high pressure area will continue to bring a cold north flow with partly to mostly cloudy skies tonight, although skies will clear across the southwest.
After 15z, winds will become southeasterly around 7-10 knots as high pressure moves off to the east.
This Pacific system will be warmer compared to the last one with snow levels remaining mostly above 5,500 feet.
However, the low levels of the atmosphere are dry thus it will take awhile for the low levels to saturate. Highs today will be in the lower to middle 20s. Increasing easterly winds on Saturday should allow for low clouds to develop which could bring a few flurries as the low clouds move westward across much of the area. High temperatures will be in the upper 20s north to the lower 30s across central and east-central Wisconsin.
Temps wl be a bit warmer today compared to Fri, with highs topping out in the upper 40s to upper 50s. Meanwhile, an upper lvl trof wl move ashore along the CA coast later today, This feature wl cont to track to the Newd, eventually movg thru the Mid-South late Sat into early Sun.
439 AM CST Fri Jan 29 2021 High pressure will bring clear and seasonably conditions to the local area for the next 24 hours. Upper trough will close off and move into the middle Mississippi River valley Saturday night bringing the next chance of showers along an approaching frontal boundary.
At the surface, high pressure over the OH Valley will gradually shift east today, allowing winds to swing around from the south. The trough currently located on the West Coast will swing across the Southern Plains early Saturday, becoming negatively-tilted as it lifts across the Ozarks. A few showers will be possible west of the MS river early Saturday but PoPs will ramp up throughout the day, peaking during the late afternoon and evening hours as lift from the approaching trough overspreads the region.