Aikyam-Lab/Synoptic-Bench huggingface dataset:
The latest satellite image shows the next upper trough moving southeast towards the Oregon coast. A front ahead of the upper trough is closing in on the coast. As the upper low moves southeast towards southwest Oregon by midday, we'll see precipitation starting to pop up further inland west of the Cascades, with east of the Cascades getting into the action early this afternoon. The upper trough will bring in a colder air mass during the day, with snow levels lowering around 2500 feet. The upper low will move into northern California tonight with precipitation generally diminishing from north to south. The upper low will move south Saturday morning and we'll be in a drier northerly flow aloft with dry weather returning for most locations, except for a slight chance of snow showers in southeast Modoc and Lake County.
944 AM EST Fri Mar 4 2022 A dry warm front will push northward across the area today and tonight.
924 AM EST Fri Mar 4 2022 High pressure will be overhead today and then move offshore tonight.
603 AM EST Fri Mar 4 2022 A dry warm front will push northward across the area today and tonight.
341 AM CST Fri Mar 4 2022 The front that moved southward through the forecast area yesterday is resting across southwestern Missouri and northern Arkansas this morning, while aloft, a ridge is moving eastward through the central CONUS. Through the day, the front will slowly push northward along southerly flow in the lower levels. As the ridge axis passes over the region mid- day, the mid-level winds will back to the southwest, helping shift the surface front north of the forecast area by the end of the day. MRM The low will move northeast across Iowa and into the Great Lakes region Saturday night, dragging a surface cold front into the region during the evening.
A little cooler farther east with readings in the lower 70s.
230 PM CST Fri Mar 4 2022 Today: Today upper level ridging has shifted into the area allowing for the winds to turn to the south and draw in some warmer temperatures this afternoon. Farther north near Kirksville has remained a bit cooler in the 50s as yesterdays cooler air lingers in eastern portions of the area. Expect the low to move across kansas and into Nebraska and Iowa by the evening. Otherwise expect a broken line of storms to extend farther south along the cold front. Showers and thunderstorms will be quick to move through the area Saturday night with drier and cooler air moving in after.
While the axis of this low will track right over the forecast area, the main belt of IVT will fall well to our south, leaving the only precip threat today to be light orographic showers across the southern portion of the CWA, mainly across the OR Cascades near central OR and higher elevations in the Ochocos and John Day Highlands.
Upper air analysis this morning showed a trough over the western half of the country with southwesterly flow over Texas. High pressure over the Gulf at the surface was producing southeasterly winds across our CWA.
A series of weather systems will bring gusty winds over the weekend along with cooler temperatures.
1050 AM CST Fri Mar 4 2022 A cold front will begin lifting northward as a warm front today. Highs will be in the lower 70s to lower 80s. This feature will begin to move to the north as a warm front today. By Saturday, a ridge aloft will shift over the East Coast as a trough deepens over the Plains. Southwest flow will set up across Texas and the lower Mississippi River valley.
Upper level analysis places a stout trough digging through the Desert Southwest, with a compact secondary low noted along the Alberta/Saskatchewan border. For the rest of today into tonight, main concern continues to be the potential for some freezing drizzle. Still, to pinpoint exactly where and when this will occur is tricky, and with very little being able to cause quite an impact, have continued more or less a broadbrushed message of patchy to areas of freezing drizzle over most of the CWA.
Huston The well advertised pattern change to a cooler, more active weather pattern begins today as high pressure gives way to an area of low pressure moving into northern California and southern Oregon. Moisture associated with this low will bring rain and snow to the area through the weekend. Precip today looks primarily focused across the higher terrain for a good chunk of the day before eventually spreading into valley locations later this evening and into the overnight. Either way, clouds, much cooler temps and a return to winter is expected for eastern Idaho the next few days.
From synopsis, high pressure will continue to build over the Mid Atlantic region this afternoon, then slide slowly offshore into the western Atlantic tonight through the weekend.
251 PM EST Fri Mar 4 2022 An upper-level ridge will build over the forecast area on Saturday paving the way to the warmest days of the year thus far.
1159 AM EST Fri Mar 4 2022 With a backdoor cold front having settled thru the region early this morning, a brief return to near normal temperatures is anticipated today. A trough approaching from the west will support increasing temperatures and cloud cover this weekend. Tonight, with low-level ridge migrating to the east, flow will remain southerly.
141 PM CST Fri Mar 4 2022 Warm front to continue lifting northward away from middle TN. Warming trend to continue overnight with low temps only dropping into the lower 50s by sunrise.
Modest mid-level ridging overhead will shift farther east while mid-level southwest flow sets up over West Texas. Strong high pressure over the Gulf will support continued southeast surface winds, bolstered at times by interaction with upstream lower pressure.
158 PM EST Fri Mar 4 2022 High pressure over the Mid-Atlantic States will move southeast tonight and Saturday.
Near the coast, temperatures are in the lower to mid 70s. Therefore, forecast highs in the lower to mid 80s inland and lower to mid 70s near the coast remain on track. Expect warmer overnight lows than we've seen recently. Temperatures tonight will likely only dip into the lower 50s north of I-10 and into the mid to upper 50s near the coast. Highs on Saturday are then anticipated to be similar to today, with temperatures reaching the lower to mid 80s inland and the lower to mid 70s near the coast.
The lowest RH values today will be in the mid slope and higher terrain areas of the mountains, which will be above the low level inversion and have deeper mixing. CD Chattanooga Airport, TN 51 74 56 78 60 / 0 0 0 10 10 Knoxville McGhee Tyson Airport, TN 48 75 57 77 60 / 0 0 0 10 10 Oak Ridge, TN 49 74 56 76 59 / 0 0 10 20 10 Tri Cities Airport, TN 45 74 53 75 56 / 0 0 10 10 10.
136 PM EST Fri Mar 4 2022 Dry and warmer weather is expected Saturday.
This is all part of a low pressure circulation offshore that will continue to dive south today before moving ashore in California.
144 PM EST Fri Mar 4 2022 High pressure over the Mid-Atlantic States will southeast tonight and Saturday.
Water vapor satellite imagery showing a pair of well defined low pressure systems over the western US this morning. The low continues to track further offshore than what models have been forecasting, so have updated the forecast to lower precipitation chances for this afternoon.
South Florida will remain under the influence of deep-layered high pressure which will help keep conditions fairly dry and sunny. The Atlantic breeze will help keep Southeast Florida in the lower to mid 80s while Southwest Florida will reside in the mid to upper 80s for highs each afternoon. Overnight lows will be in the lower to mid 60s inland and in Southwest Florida while metro Southeast Florida will reside in the lower 70s.
Of the higher- resolution guidance the ConsShort had the highest gusts, so we used it Saturday and Saturday night.
High pressure over the Gulf is interacting with upstream lower pressure to support a moderate onshore flow. /issued 304 AM CST Fri Mar 4 2022/ SHORT TERM (Now through Saturday): Mid-level ridge axis east of the Texas coast and low pressure trough across the western states slowly getting its act together will combine to gradual strengthen the pressure gradient, continue the warming trend and increase the humidity but no rain is anticipated today or Saturday. No rain is anticipated with very shallow moisture and warmer drier air aloft.
1135 AM CST Fri Mar 4 2022 (The rest of today ) Stronger south winds return today, as the upper flow pattern transitions to troughing in the West and SW flow over the Plains. Initial upper wave will lift into the central Plains on Saturday with cold front moving into northeast Oklahoma Saturday evening.
Still expecting a general 1 to 5 inches of snow across the region, with the highest amounts across the southeast CWA. Only real change was to reduce mention of freezing drizzle overnight and delay it more towards Saturday morning. Soundings are not as supportive as they were yesterday, with somewhat of a dry layer in the lowest levels. Soundings across the southeast CWA on Saturday do support freezing rain, but there is still some uncertainty in just how long the atmosphere remains favorable.
Lingering, but isolated showers this morning will transition to dry weather through the weekend as high pressure builds just offshore.
(The rest of today ) Stronger south winds return today, as the upper flow pattern transitions to troughing in the West and SW flow over the Plains. Initial upper wave will lift into the central Plains on Saturday with cold front moving into northeast Oklahoma Saturday evening.
High temperatures for today are expected to reach up into the lower to mid 80s for inland areas and in the 70s for areas adjacent to the coast.
Upper level northwest confluent flow/general subsidence in control today with an upper level ridge axis arriving over the Central Great Lakes around midnight. With high pressure centered over the Mid Atlantic States this evening, warm advection will only ramp up furthering tonight and Saturday, with 850 MB temps progged to reach 8-10 C over southeast Michigan.
/issued 1050 AM CST Fri Mar 4 2022/ A cold front will begin lifting northward as a warm front today. Highs will be in the lower 70s to lower 80s. This feature will begin to move to the north as a warm front today. By Saturday, a ridge aloft will shift over the East Coast as a trough deepens over the Plains. Southwest flow will set up across Texas and the lower Mississippi River valley.
Warm front to continue lifting northward away from middle TN. Warming trend to continue overnight with low temps only dropping into the lower 50s by sunrise.
238 PM MST Fri Mar 4 2022 Some jet-induced weak upper divergence is bringing about some flurries across the area around Billings this afternoon, though with surface temperatures above freezing, it's all melting immediately. Soundings still indicate a saturated near-surface layer with dry air aloft in the immediate onset of the snow this afternoon and evening, so freezing drizzle before the snow is still a possibility.
However, dry conditions will come to an end as rain chances will increase as the weekend goes on as a cold front approaches the region.
Daytime temperatures will only warm into the low/mid 50s to lower 60s on Saturday with the higher terrain struggling to reach the lower 40s. However, widespread freezing temperatures outside of the coldest interior valleys are not anticipated at this time. KSFO Bridge Approach.
upper trough will eject northeastward and close off as it moves into northeastern Colorado Saturday morning.
654 PM EST Fri Mar 4 2022 Dry and warmer weather is expected Saturday.
Snow accumulations will generally fall within the 1 to 3 inch range, however the most significant weather impact will be the travel impact, with initial snowfall melting and later freezing up (as road surface temperatures rapidly cool below freezing). A ridge of high pressure amplifying over the Gulf of Alaska is expected to drift eastward over the weekend and intensify northerly flow aloft over the Northern Rockies.
Temperatures are still feeling the effects of the fog and stratus that bloomed early this morning with notably warmer readings east and west but cooler central.
249 PM MST Fri Mar 4 2022 As the precipitation from earlier today finally thins out and diminishes from Zortman toward Opheim, another round of snow will begin to form over central Montana as the upper level low pressure trough strengthens an approaches from the northwest.
Ensembles showing a closed upper low droping south into California tonight originating from Gulf of Alaska. as upper low slides over the top of the area don't expect much more than isolated lilght showers in the valley but snow will occur in the mountains with snow levels dropping to near 2,000 feet by sunrise.
723 PM EST Fri Mar 4 2022 Breezy and quiet weather continues across South Florida this evening as a ridge of high pressure continues to build into the region. South Florida will remain under the influence of deep-layered high pressure which will help keep conditions fairly dry and sunny. The Atlantic breeze will help keep Southeast Florida in the lower to mid 80s while Southwest Florida will reside in the mid to upper 80s for highs each afternoon. Overnight lows will be in the lower to mid 60s inland and in Southwest Florida while metro Southeast Florida will reside in the lower 70s.
Further south, a band of very dry air will move across Kansas ahead of the cold front. Once the cold front moves through late afternoon and temperatures drop significantly, that threat will be over. Highs Saturday will range from the mid 30s north to potentially the low 70s south.
A low pressure system will continue moving eastward across Southern California through this evening, resulting in continued precipitation chances throughout most of the area.
606 PM CST Fri Mar 4 2022 Increased PoPs across Central North Dakota to account for on going freezing drizzle. Winter Weather Advisory remains in effect for Central North Dakota for icing from freezing drizzle. If this freezing drizzle expands west or east will do the same with the advisory. Upper level analysis places a stout trough digging through the Desert Southwest, with a compact secondary low noted along the Alberta/Saskatchewan border. For the rest of today into tonight, main concern continues to be the potential for some freezing drizzle. Still, to pinpoint exactly where and when this will occur is tricky, and with very little being able to cause quite an impact, have continued more or less a broadbrushed message of patchy to areas of freezing drizzle over most of the CWA.
Satellite showing the closed upper low approaching the northern Cali coast. Temperatures are much cooler than yesterday due to the increasing clouds and lower heights with highs in the 40 to lower 50s. Expect precip to increase in coverage and intensity tonight as the low approaches. Snow continues through Saturday evening as the low pivots across central/southern NV. The snow could still be moderate to heavy in the deformation zone on the north and back side of the low as it ejects out east into Utah.
542 PM CST Fri Mar 4 2022 Today: Today upper level ridging has shifted into the area allowing for the winds to turn to the south and draw in some warmer temperatures this afternoon. Farther north near Kirksville has remained a bit cooler in the 50s as yesterdays cooler air lingers in eastern portions of the area. Expect the low to move across kansas and into Nebraska and Iowa by the evening. Otherwise expect a broken line of storms to extend farther south along the cold front. Showers and thunderstorms will be quick to move through the area Saturday night with drier and cooler air moving in after.
97 As the precipitation from earlier today finally thins out and diminishes from Zortman toward Opheim, another round of snow will begin to form over central Montana as the upper level low pressure trough strengthens an approaches from the northwest.
Expect lows in the low to mid 50s. However, dry conditions will come to an end as rain chances will increase as the weekend goes on as a cold front approaches the region.
Breezy and quiet weather continues across South Florida this evening as a ridge of high pressure continues to build into the region. South Florida will remain under the influence of deep-layered high pressure which will help keep conditions fairly dry and sunny. The Atlantic breeze will help keep Southeast Florida in the lower to mid 80s while Southwest Florida will reside in the mid to upper 80s for highs each afternoon. Overnight lows will be in the lower to mid 60s inland and in Southwest Florida while metro Southeast Florida will reside in the lower 70s.
First, we have northerly flow across north central South Dakota, with lower ceilings and dewpoint depressions suggesting freezing drizzle is in fact possible if not occurring up that way, however across the eastern CWA while we do have status in place, upstream dewpoints in the single digits/teens are resulting in drier subcloud layers and thus eastern South Dakota remains dry.
315 AM EST Sat Mar 5 2022 Dry, warm weather will prevail today under high pressure.
Clouds in areas along the Foothills and into areas of the lowlands through tonight. Clouds will clear into Saturday morning, with the upper ridge offshore.
only allowing them to drop into the low to mid 50s.
Latest models depict very little change with regard to the track of a low pressure system as it moves across Nevada through Saturday. Only light snow accumulations are expected and mainly along the Nevada border nearest the track of the low.
Increased PoPs across Central North Dakota to account for on going freezing drizzle. Winter Weather Advisory remains in effect for Central North Dakota for icing from freezing drizzle. If this freezing drizzle expands west or east will do the same with the advisory. Upper level analysis places a stout trough digging through the Desert Southwest, with a compact secondary low noted along the Alberta/Saskatchewan border. For the rest of today into tonight, main concern continues to be the potential for some freezing drizzle. Still, to pinpoint exactly where and when this will occur is tricky, and with very little being able to cause quite an impact, have continued more or less a broadbrushed message of patchy to areas of freezing drizzle over most of the CWA.
1152 PM EST Fri Mar 4 2022 Dry, warm weather will prevail Saturday under high pressure.
936 PM CST Fri Mar 4 2022 Today: Today upper level ridging has shifted into the area allowing for the winds to turn to the south and draw in some warmer temperatures this afternoon. Farther north near Kirksville has remained a bit cooler in the 50s as yesterdays cooler air lingers in eastern portions of the area. Expect the low to move across kansas and into Nebraska and Iowa by the evening. Otherwise expect a broken line of storms to extend farther south along the cold front. Showers and thunderstorms will be quick to move through the area Saturday night with drier and cooler air moving in after.
High pressure centered over the Mid-Atlantic States is generating southerly winds keeping a warm air mass in place over the Tennessee Valley today.
High pressure remains over the local area, with dry conditions expected overnight. As of 9 PM temperatures were in the mid to upper 60s, except along the Treasure coast where increased onshore flow allowed temperatures to drop into the low 70s.
1146 PM EST Fri Mar 4 2022 Dry, warm weather will prevail Saturday under high pressure.
As this feature continues northeast during the day, a strong but dry cold front will push through southwest KS during the early afternoon, ushering in much cooler temperatures via strong north winds.
1040 PM EST Fri Mar 4 2022 Water vapor imagery highlights a building ridge axis across the eastern CONUS, corroborated by rising mid and upper-level heights on the 00Z RAOBs. A surface anticyclone is now east of the Carolinas which supports northeast to east winds 20 to 25 knots across the Florida Keys. The forecast for tonight features windy east-northeasterlies, lows in the lower 70s, clearing skies, and only a slight rain chance. High pressure will continue to build over the Mid Atlantic region overnight, sliding slowly offshore into the western Atlantic this weekend.
242 AM EST Sat Mar 5 2022 Through Sun upper level ridging in the Gulf of Mexico builds in slightly and begins to ease eastward. Mon through Fri: The ridging aloft the area slowly slips east as it settles southward by midweek. in response to a short wave trough that drops into the central plains from the Pacific Northwest. The short wave trough dampens out as it lifts to the northeast and leaves broad troughing aloft the central and east US. The Atlantic high pressure continues to stretch west. Winds of 15 knots and seas generally 4 feet or less as Atlantic high pressure dominates the waters. with veering winds as the high slowly moves south.
Diegan Chattanooga Airport, TN 51 76 56 78 60 / 0 0 0 10 10 Knoxville McGhee Tyson Airport, TN 49 76 57 77 60 / 0 0 0 10 10 Oak Ridge, TN 50 76 56 76 60 / 0 0 0 20 10 Tri Cities Airport, TN 45 75 54 75 55 / 0 0 0 10 10.
325 AM EST Sat Mar 5 2022 A ridge axis will set up from the Gulf of Mexico extending northward into the Ohio River Valley as a longwave trough develops to the west of the forecast area. As the center of high pressure slides eastward off the coast today, easterly flow at the surface will become more southeasterly.
357 AM EST Sat Mar 5 2022 An upper-level ridge will build over the forecast area on Saturday paving the way to the warmest days of the year thus far.
234 AM EST Sat Mar 5 2022 An upper-level ridge will build over the forecast area on Saturday paving the way to the warmest days of the year thus far.
A modest increase in south- southeasterly low-level flow is also anticipated, as the pressure gradient contracts between a ridge centered off the northern Mid- Atlantic coast and a developing lee cyclone across eastern CO/western KS, and this should contribute to warmer early morning temps in the l-m 50s.
High pressure will move east and a cold front will approach from the Plains on Satuday.
Temperatures remain below average, with highs ranging from near 20 to the lower 30s.
Surface analysis early this morning places a cold front over the Northern Plains while a ridge of high pressure is located near Florida. Southerly winds on the back side of high pressure is continuing to bring mild temperatures to the Mid- South this morning. Short term models including some Convective Allowing Model solutions indicate a potential for perhaps a few warm advection rain showers mainly along and west of the Mississippi River this afternoon but think most areas may remain dry given the lower dewpoint air in place across the area.
/issued 242 AM EST Sat Mar 5 2022/ Through Sun upper level ridging in the Gulf of Mexico builds in slightly and begins to ease eastward. Mon through Fri: The ridging aloft the area slowly slips east as it settles southward by midweek. in response to a short wave trough that drops into the central plains from the Pacific Northwest. The short wave trough dampens out as it lifts to the northeast and leaves broad troughing aloft the central and east US. The Atlantic high pressure continues to stretch west. Winds of 15 knots and seas generally 4 feet or less as Atlantic high pressure dominates the waters. with veering winds as the high slowly moves south.
All of the ensemble members show at least a cooler and snowy pattern this week, but as shown above, there is uncertainty in how cold and how snowy it will be.
An upper low centered over interior NorCal allowed for additional showers overnight. The hi-res NAM and HRRR indicate that these small, cellular showers should persist for the mentioned areas this morning and then dissipate by late afternoon as the center of the upper low tracks SE into southern Nevada. Expect colder valley areas to continue dropping into the low to mid 30s with isolated areas of frost.