Aikyam-Lab/Synoptic-Bench huggingface dataset:
516 PM CST Fri Feb 25 2022 Cool high pressure will settle into central Illinois tonight.
Western valleys are likely to be a bit cooler, dipping into the negative teens around sunrise. Saturday afternoon will be warmer than Friday by about 5 degrees thanks to clear skies and increasing geopotential heights as a ridge builds over the western CONUS.
231 AM EST Sat Feb 26 2022 High pressure will nose into the Commonwealth this weekend, to bring generally dry weather and seasonable temperatures.
325 AM EST Sat Feb 26 2022 High pressure remains aloft over the region early this morning, with strong subsidence continuing over the local area. At the surface, a frontal boundary is located north of our area, with high pressure over the western Atlantic extending westward across the Florida peninsula.
Otherwise a warmer day, with highs in the 20s. Flow aloft returns to northwesterly, with low pressure developing to our northeast and southeasterly surface winds picking up. Ahead of the front, there should be a decent amount of sun and warmer air mass to be able to get into the teens to 20s above zero by afternoon. The cold front will come dropping down Saturday afternoon and evening.
At the surface west to southwest winds will prevail and the pressure gradient will gradually tighten due to high pressure situated off to the southeast and a broad low pressure system working across Canada.
Low level mixing will be sufficient through the night with a tighter pressure gradient on the northern periphery of weakening high pressure to keep temperatures from dropping too far below zero, with widespread lows in the single digits below zero forecast. Summary: Warmer tomorrow before a series of clippers move through the region for much of the remainder of the period bringing low chances for snow and continued below normal temperatures. High pressure centered over the Missouri Valley was bringing mostly sunny and dry conditions to the Northland this afternoon. As the ridge axis moves overhead this evening, winds will turn southwesterly and increase helping to bring in warmer air ahead of the next clipper.
1022 PM EST Fri Feb 25 2022 High pressure will nose into the Commonwealth this weekend, to bring generally dry weather and seasonable temperatures.
High pressure will build in from the west. A drier and cooler airmass has settled over the CWA. Even with high pressure in place at the surface, deep moisture will be transported eastward in the mid and upper levels through the period.
1053 PM EST Fri Feb 25 2022 Strong high pressure to the west will build in through Saturday.
Not expecting these persistent clouds to clear out until Saturday afternoon/evening when low level flow strengthens a bit and high pressure moves in. Also had to add in some flurries to certain areas where light rain showers turned over to flakes which are expected to persist into tonight (mainly confined to the higher elevations by now). Lingering low level moisture and very cold air aloft will allow for flurries or freezing drizzle along the eastern mountains through this evening. Tonight's temperatures will drop few degrees below freezing due to cold air in place aloft as models showing H850 minus 10C contour south of the area, and good radiational cooling conditions expected tonight. Highs on Saturday will range from the low to mid 40s lowlands, ranging into the low 30s northeast mountains.
1259 AM EST Sat Feb 26 2022 Colder air and dry high pressure was in place for tonight and Saturday.
The snow will taper off and end by this afternoon as surface ridging builds in with drying and subsidence. The northern stream dominates the next few days with fast northwest flow between western ridging and an upper low over eastern Canada.
351 AM EST Sat Feb 26 2022 High pressure will prevail through the weekend.
Surface analysis late this evening places a 1038 mb ridge of high pressure over Missouri and extending into portions of the Lower Mississippi Valley this evening. As of 8 PM CST, temperatures across the Mid-South range from the upper 20s to the lower 30s. Temperatures range upper 20s over northeast Arkansas and the Missouri Bootheel to near freezing along the I-40 corridor. Above freezing temperatures can be found across all of north Mississippi. Expect lows near freezing over north Mississippi with mid to upper 20s north. This wave will take a southeast track through the Lower Mississippi Valley and place the Mid-South in the right exit region of a 130 knot jet.
Temperatures should make it to around freezing for most locations with plenty of sunshine to help with additional clearing of snow/ice from untreated roads.
947 PM PST Fri Feb 25 2022 Cool and dry through Saturday with widespread freezing low temperatures in the early morning hours. Temperatures trend warmer this weekend.
1202 AM EST Sat Feb 26 2022 High pressure over the Central Plains is continuing to extend a ridge over the U. The main feature of interest is a low pressure system tracking across the Hudson Bay on Saturday. A cold front dives south across our CWA Saturday night and ushers in the next arctic air mass. Soundings show a brief period of robust snow showers accompanying the cold front passage, especially across the east. These showers could add up to a quick inch with light lake effect snow showers developing for northwest wind snow belts behind the cold front.
217 AM CST Sat Feb 26 2022 Key Messages: - Near seasonal high temperatures in the lower 40s today. Mostly clear skies and weak isentropic descent will nudge temps above freezing into the upper 30s to lower 40s this afternoon.
Today will be the first day above freezing in about week. As such, could see temperatures today a few degrees cooler than forecast if the clouds are thicker than expected.
1016 PM MST Fri Feb 25 2022 A broad, positively tilted trough covers much of the CONUS. Surface map shows high pressure to our east and west, with westerly winds across our CWA. The upper trough will shift eastward tonight, as an upper ridge builds over the western CONUS.
325 AM EST Sat Feb 26 2022 After a few morning flurries, dry weather should return today under building high pressure.
855 PM PST Fri Feb 25 2022 Quiet night in store with transitory ridge building in over the Pacific Northwest.
1109 PM CST Fri Feb 25 2022 Cool high pressure will settle into central Illinois tonight.
Over the lower 48, scattered light precipitation was occurring under a more enhanced band noted in the low-level water vapor imagery. These clouds have helped keep conditions warmer than they normally would be, ranging in the lower 30s with NE winds of 5-15 mph.
Gusty northwest winds will develop across western and central NM Saturday behind a cold front, but are forecast to remain below 25kts. Patches of freezing fog may develop across far southeast NM and portions of the TX Panhandle early Saturday morning, but will likely remain well to the south and east of KTCC and KROW. Breezy conditions will develop most areas Saturday afternoon as a weak and dry cold front moves through.
818 PM MST Fri Feb 25 2022 AFTERNOON UPDATE: Today through Saturday night: Slow warming trend expected with dry weather conditions as the arctic airmass shallows out and ridge to the west pushes in gaining influence.
1006 PM EST Fri Feb 25 2022 A weak cold front will shift to the coast tonight. Much cooler air will return behind the cold front with temperatures 20 to 25 degrees cooler for the weekend.
Lows early Saturday morning will generally be in the low 30s for the majority of the TN valley. Discussion: Deep swly flow prevails this afternoon across the region as a cold front continues to push east of the Appalachians with drier high pressure spilling in from the northwest. PGFs remain elevated ahead of the ridge across East TN and southwest VA/NC this afternoon favoring light/moderate nwly winds with some light gusting amidst sct low clouds (ovc across the plateau).
Lows early Saturday morning will generally be in the low 30s for the majority of the TN valley. SR Chattanooga Airport, TN 51 41 50 33 58 / 20 90 80 10 0 Knoxville McGhee Tyson Airport, TN 50 39 47 30 55 / 10 80 60 10 0 Oak Ridge, TN 50 38 49 30 55 / 10 70 50 10 0 Tri Cities Airport, TN 49 36 46 27 51 / 10 50 50 10 10.
However, temperatures will be rather close to freezing in some portions of the Delta, where some mix of freezing rain could be possible around daybreak. Some increase in rain chances across the Delta, particularly in extreme SE Arkansas, might support a very brief period of some brief freezing drizzle around or just after daybreak. However, such shallow moisture depth & only being right around freezing limits confidence of development &/or impacts. With cold air & strong high pressure building in, lows will fall into the low 40s SE to mid-upper 30s elsewhere. Highs will only fall into the low 40s along & NW of the Natchez Trace to low 60s in the SE.
105 AM EST Sat Feb 26 2022 A weak cold front will shift to the coast tonight. Much cooler air will return behind the cold front with temperatures 20 to 25 degrees cooler for the weekend.
High temperatures today will range in the lower to mid 40s, but with breezy southwesterly winds so the warmth will be tempered slightly.
A cold front has progressed east across the area, with winds shifting to the north-northwesterly and drier air also moving into the region.
250 AM EST Sat Feb 26 2022 Strong and cold high pressure centered over Missouri will continue to modify as it settles over the Ohio Valley, but stratus will hang on for much of today as a shallow layer of moisture remains trapped below a strong inversion. Temps near freezing will further limit the impacts.
1241 AM EST Sat Feb 26 2022 Dry weather returns for later tonight and Saturday with building high pressure.
225 AM EST Sat Feb 26 2022 High pressure will build across the eastern United States today.
1030 PM EST Fri Feb 25 2022 Currently - Deep layered ridging remains in place with the upper ridge centered over the northwestern Caribbean Sea and the mid level one across Florida. Short Term Update - Deep layered ridging will broadly remain across our area through the overnight. With the persistence of deep layered ridging, stable conditions will remain with little to no chance for measurable precipitation. Temperatures should be able to settle downwards into the lower 70s, but with some spread based on exposure to the prevailing breeze. An Atlantic ridge reaching in Florida will maintain gentle to moderate easterly breezes near and north of the island chain.
Moderate to strong north winds will prevail across the coastal waters the rest of tonight into Saturday as a coastal low/trough develops across the western Gulf of Mexico late tonight into early Saturday morning. A slight overnight deepening of a coastal trough will keep chances of light rain or drizzle going along the coast, but accumulations will be very low. As the trough fills on Saturday precip may let up in the afternoon. Weak additional reinforcing high pressure will again arrive Saturday night, reviving low end rain chances, but Saturday night temps will edge slightly higher than Friday night temps, reaching the lower to mid 40s.
Late this afternoon tonight, the upper level trough axis will extend from northeast WY into northern UT at 00z, with the left entrance region of the upper level jet over southeastern CO. The high resolution models still show a couple of weak bands developing over the north central mountains this afternoon, then weakening into the early evening. We are still just looking for snowfall accumulations around an inch in the high country and mainly less than one inch in the southern foothills and Palmer Divide. By Saturday afternoon, the trough will shift to the east of CO with a dry and subsident northerly flow aloft over the forecast area. Cooler than normal but significantly warmer than this past week.
North to northwest flow aloft continues over the region downstream of an upper level ridge with axis along the WA/OR coast this evening. Hoenisch The rebound in temperatures will continue through the weekend as warmer air continues to work its way into the area. /ISSUED 450 PM MST Fri Feb 25 2022/ Pleasant weather continues today for most of the area as a high pressure system remains centered just south of West Yellowstone. These winds will continue through the weekend, so blowing snow will remain possible until temperatures warm up above freezing on Saturday. Speaking of this warm up, warmer air from the Pacific will downslope into the area over the weekend as an upper level ridge builds into the area, which will bring the return of above average temperatures to the area.
237 AM EST Sat Feb 26 2022 A stout ridge of high pressure remains entrenched over South Florida, allowing for mostly dry conditions to preside over the region through today. A subtle east/northeast wind shift today will allow for slightly cooler conditions than what has been observed along the east coast in recent days, as maximum temperatures in the upper 70s/lower 80s are expected across east coast metropolitan locations today. This slight southeasterly wind shift will allow for advection over warmer temperatures; maximum temperatures in the lower 80s are likely along the east coast, and mid/upper 80s expected elsewhere.
Following Friday's cold front, high pressure and a drier air mass has settled over most of the region. Temperatures today will be slightly cooler than yesterday with Highs in the upper 70s with low 80s in the SE Big Bend and the Lows tonight will be in the 50s.
Could see some spotty areas of light freezing drizzle or freezing rain in far southeast OK over the next several hours, with little or no accumulation expected. Otherwise, temperatures will warm above freezing today, with highs in the upper 30s/lower 40s.
842 PM MST Fri Feb 25 2022 North to northwest flow aloft continues over the region downstream of an upper level ridge with axis along the WA/OR coast this evening. Hoenisch The rebound in temperatures will continue through the weekend as warmer air continues to work its way into the area. /ISSUED 450 PM MST Fri Feb 25 2022/ Pleasant weather continues today for most of the area as a high pressure system remains centered just south of West Yellowstone. These winds will continue through the weekend, so blowing snow will remain possible until temperatures warm up above freezing on Saturday. Speaking of this warm up, warmer air from the Pacific will downslope into the area over the weekend as an upper level ridge builds into the area, which will bring the return of above average temperatures to the area.
1116 PM EST Fri Feb 25 2022 Dry weather returns for later tonight and Saturday with building high pressure.
TWH Westerly winds were increasing across the area this afternoon as high pressure builds over the region. Developing lee-side troughing will tighten pressure gradients, causing winds to increase further along the western foothills this evening.
1044 PM EST Fri Feb 25 2022 High pressure will nose into the Commonwealth this weekend, to bring generally dry weather and seasonable temperatures.
Dry conditions continue under high pressure. Expect slightly warmer temperatures on Saturday, with periods of gusty afternoon wind.
Breezy swly winds and warm advection is then expected on Sat as a large low pressure area moves from Hudson Bay into Quebec. Temps are expected to rise above the freezing mark for Sat afternoon. A dry cold front will then pass late Sat nt. High pressure is building southeast from the Central Plains, with winds gradually decreasing as it approaches.
1049 PM CST Fri Feb 25 2022 (This evening through Saturday) The main concern overnight is the potential for freezing rain/freezing drizzle Saturday morning. With temperatures near to below freezing, light freezing rain or freezing drizzle may develop. At this time, little to no ice accumulations are expected, but minor accumulations are possible, especially on elevated surfaces, along with bridges and overpasses. Temperatures Saturday afternoon are forecast to slowly rise above freezing, with precipitation transitioning to all liquid.
A portion of western north TX could get some freezing drizzle this morning. As this light precipitation moves into OK, temperatures are expected to be above freezing, so an precipitation that falls should be rain.
1138 PM CST Fri Feb 25 2022 Summary: Warmer tomorrow before a series of clippers move through the region for much of the remainder of the period bringing low chances for snow and continued below normal temperatures. High pressure centered over the Missouri Valley was bringing mostly sunny and dry conditions to the Northland this afternoon. As the ridge axis moves overhead this evening, winds will turn southwesterly and increase helping to bring in warmer air ahead of the next clipper.
A few stronger wind gusts are being observed on the Buffalo Ridge. TODAY: A good melting day is on tap for Saturday, thanks to the combination of temperatures above freezing, plenty of sunshine, and a breezy southwest wind. 25 to 30 mph gusts will be possible along the higher elevations of the Buffalo Ridge areas, and this could induce some blowing snow at times and minor road impacts. Have remained a bit more cautious with high temperatures today given the amount of energy it may take to melt the remaining snow, but nearly all areas will be above freezing. For most locations, overnight low temperatures remain in the lower 10s, with higher elevations and valley regions having the potential for a wide array of readings.
649 AM CST Sat Feb 26 2022 Winds remain breezy, now turning a little more west-southwest as the clipper's warm frontal feature moves east into Minnesota. A glancing cold frontal passage this evening from the MB/ON clipper may spark some scattered snow showers in northwest MN, particularly near LOW. This cold front should stall and drape itself across the region on Sunday ahead of the incoming clipper train. Medium and hi res guidance is picking up the presence of mid level fgen parallel to the flow as well as this low level boundary. West to northwest flow will be the main feature through the upcoming week, with a transition to a ridging or even southwest upper pattern by the end of the week.
A stout ridge of high pressure remains entrenched over South Florida, allowing for mostly dry conditions to preside over the region through today. A subtle east/northeast wind shift today will allow for slightly cooler conditions than what has been observed along the east coast in recent days, as maximum temperatures in the upper 70s/lower 80s are expected across east coast metropolitan locations today. This slight southeasterly wind shift will allow for advection over warmer temperatures; maximum temperatures in the lower 80s are likely along the east coast, and mid/upper 80s expected elsewhere.
A ridge of high pressure is forecast to dominate our wx this weekend with generally dry, partly sunny conditions and light winds.
One last impulse brushing by to our northeast is all that remains of the trough as the flow reconsolidates at higher latitudes.
It's a slow start to the warming trend as temperatures are only a few degrees warmer than this time yesterday. Highs are expected to peak right around average for this time of year, but again just a few degrees warmer than yesterday. Saturday night will see a trough pass through northern California, which could offer a few chances for light rain.
Breezy NW flow off the Cheyenne Ridge will extend onto the NE plains in the afternoon. Mostly clear skies will support a cool night although slightly warmer than the previous. With snow cover and an inversion in place, the high mountain valleys may get quite a bit colder than surrounding areas (teens to 20s below zero). For Sunday, high pressure ridge aloft will be over Colorado with light northerly flow aloft.
High pressure shifting to the southeast will bring increasing southwesterly flow later this morning. Gusts could reach 35 mph per forecast soundings, and despite temperatures near freezing with clear skies, there should be patchy blowing snow with plenty of fresh snowpack.
340 AM MST Sat Feb 26 2022 Upper level ridging over the western U.
A potent trough is pushing through CO and phasing with some southern stream energy moving out of northern Mexico and the SW US. Some scattered light sleet and freezing rain is moving roughly along the I-40 corridor. Issued SPS and mentioned the possibility of a slick bridge or overpass. Temps below freezing and layers of dry air will result in some bouts of light sleet or light freezing rain this morning. Used lower end of temp guidance today given cloud cover and continued northeast flow feeding from cold high pressure. Later this afternoon into tonight the upper level trough approaches and the Mid-South is positioned in the right entrance region of 140 kt upper jet ripping through the OH Valley. Latest thermal profiles point toward some light freezing rain, sleet and possibly even some snow. Some slick bridges or overpasses could occur.
Widespread freezing temperatures will occur again in the San Joaquin Valley this morning.
348 AM CST Sat Feb 26 2022 At the surface, high pressure centered over the middle Mississippi River Valley early this morning. Aloft, a trough extended from the Great Lakes southwestward to southern California.
CIGS are forecast to lower into IFR tonight, with increasing showers and areas of rain as an upper level trough of low pressure approaches.
Temperatures across the region this morning were a few degrees warmer than 24 hours ago, with readings generally in the 10s across the plains and larger valleys, and single digits over the higher terrain. Some light westerly winds were noted just east of the mtns, and in these locations, the ambient temps were a few degrees warmer than surrounding regions. A trough axis of mid level low pressure was over the state early this AM and will push east today, and likewise heights will be on the rise. This will allow for subsidence over the region and warmer temperatures will be the result. For tonight, clear skies will prevail with temps over the plains dropping into the high single digits and 10s.
452 AM EST Sat Feb 26 2022 High pressure will nose into the Commonwealth this weekend, then a cold front will sweep southeast across the state Sunday evening.
858 AM EST Sat Feb 26 2022 Another quiet morning across South FL as high pressure continues to dominate. A stout ridge of high pressure remains entrenched over South Florida, allowing for mostly dry conditions to preside over the region through today. A subtle east/northeast wind shift today will allow for slightly cooler conditions than what has been observed along the east coast in recent days, as maximum temperatures in the upper 70s/lower 80s are expected across east coast metropolitan locations today. This slight southeasterly wind shift will allow for advection over warmer temperatures; maximum temperatures in the lower 80s are likely along the east coast, and mid/upper 80s expected elsewhere.
As the trough exits later this morning the snow showers should dissipate. Highs today will be similar to yesterday with some clouds hanging around in the higher terrain. Warm advection aloft will begin today as a ridge quickly builds in from the west. So while lows are expected to be chilly tonight it will be slightly warmer than this morning for most locations. Tomorrow the ridge passes overhead and temperatures continue to rise.
An upper ridge will build in from the west today. Clear skies will accompany the ridge, except for patchy fog and stratus in the Camas Prairie this morning. A moist upper trough off the west coast will move inland later today.
Over the lower 48, scattered light precipitation was occurring under a more enhanced band noted in the low-level water vapor imagery.