Aikyam-Lab/Synoptic-Bench huggingface dataset:
What we will see is a push of cold air that gradually sinks temperatures throughout the day eventually reaching near freezing this evening. Overnight Sunday into Monday, low level winds return to southerly which advects warmer air into the region. Compression of the pressure gradient ahead of another forthcoming cold front accelerates this flow pushing 50F temperatures up to the MO River with northern MO seeing highs in the upper 40s. However, while this cold front increases the flow of warm air northward, it also signals the approach of another polar blast of cold dry air. The extended outlook is more of the same with winds oscillating between south and north yielding warmer and colder temperatures respectively.
Warmer conditions will return for the majority of the upcoming week with generally light winds. Breezy east winds along the Sierra crest continued to gust 50-70 mph overnight in response to a strong pressure gradient that remains in the wake of passing low pressure, currently moving through Arizona. Temperatures remain around seasonal averages today with warmer conditions and generally light winds for the majority of the week.
The main forecast focus in the short term will be warmer temperatures today and slight chances for light snow across far northern Nebraska on Monday. Today, an arctic front will be located across northeast Nebraska this morning, then retreat eastward as a warm front. This will bring mild temperatures in the lower to mid 50s. Tonight, a cold front reaches northern Nebraska late. Morning highs in the low to mid 30s across the northeast with falling afternoon temperatures. Highs will manage to reach the low to mid 40s south of Highway 2.
Sprawling high pressure at the surface from the Southern Plains into the Lower Mississippi Valley will continue to be in control of our weather today. 1" on the 12z JAN sounding) supported temperatures in the low 20s to upper teens across much of the area early this morning. Afternoon highs are expected to climb into the low to mid 50s, which will make for a rather large diurnal temperature swing. After a very chilly start this morning, this afternoons highs are expected to climb into the lower 50s. Tonights lows will be warmer. though still dropping below freezing.
523 AM CST Sun Jan 23 2022 The same old pattern aloft continues over the region through Monday, featuring a ridge along the west coast, and downstream troffing over much of the CONUS. It should be mostly snow, but the west edge of the pcpn band may support a mix of types as warmer air aloft advects east over the colder areas of northeast South Dakota. Again, the northeast CWA is probably the area to receive the highest amounts, where up to 3 inches look possible over the Coteau. High pressure on the order of 1040mb will be overhead to start the period, with associated arctic cold and little warmup during the day.
Highest snowfall amounts of T-2" expected in most of the area, associated with the separate 275K isentropically- driven band and the low level frontogenetical band. Snowfall departs to the southeast Monday morning as the upper level trough sags into the Mid-Mississippi River Valley.
627 AM EST Sun Jan 23 2022 High pressure will build in early this week keeping the area dry and cold.
538 AM EST Sun Jan 23 2022 A milder westerly flow of air returns to the region tonight as high pressure slides off of the eastern seaboard tonight.
Forecast has be updated to reflect scattered flurries through mid-morning where the low clouds will persist for a few more hours. Tonight's clipper tracked further north than anticipated, which brought warmer and drier into areas south of highway 30. With the more northern track of the low, the snow band shifted north as well. Still expecting snow totals of 1 - 3 inches north of highway 30 with the highest amounts around Dubuque and points to the east. Recently issued a Special Weather Statement because patchy freezing drizzle developed along the I-80 corridor. The radar shows the light precip quickly moving to the SE, so don't expect the freezing drizzle to last very long.
331 AM MST Sun Jan 23 2022 Today will be one final warm day across the area, before a cold front pushes through the area on Monday. Upper level ridging will remain in control of the regions weather today, which will result in one final day of above average temperatures across the area. A small blip in the upper level ridge's stronghold will occur tomorrow as a cold front will push through the area, bringing noticeably cooler temperatures to the area, along with a quick round of light snow for much of the area. Behind this cold front, the colder temperatures will not hang around long as westerly flow bring warmer air back into the area, albeit kind of gradually. As temperatures warm, expect mainly dry and occasionally breezy conditions as the upper level ridge shifts back into the area.
North winds will linger within the lower Colorado River Valley through early afternoon. The winds will start to diminish as an area of low pressure starts moving east across southern Arizona. Otherwise, a quiet forecast with minimal impactful weather is expected this week as ridging sets up over the region. Through Monday night An upper low is over southwest Arizona early this morning. Moisture wrapping around the upper low continues to bring some clouds to areas along and south of I-40 in Mohave and San Bernardino Counties. North wind gusts up to 35 mph at times will continue within the lower Colorado River Valley through early afternoon. Surface gradients and winds aloft will finally start to weaken this afternoon and overnight as the upper low moves east toward El Paso.
Low pressure, over southwest Canada right now, will then track southeast into the Northern Plains later tonight and Monday, dragging another arctic boundary into the region.
After a very chilly start this morning, this afternoons highs are expected to climb into the lower 50s. Tonights lows will be warmer. though still dropping below freezing.
After a frigid start with lots of sunshine expected today, temperatures should rise above freezing for all sites by ~9-10AM.
Winds over the higher elevations have diminished as the upper low to our southeast is now moving east across northern Sonora and away from our area. Otherwise today will be a mostly sunny day with slightly warmer than normal daytime temperatures. Meanwhile, an upper high pressure center situated off the western CONUS coast will be our main weather maker for the next several days.
Freezing fog has expanded up through the Yakima and Kittitas Valleys, where reports of less than a mile visibility are occurring. Have elected to expand the freezing fog advisory to these areas through the early afternoon, as winds are expected to remain light, and high clouds overhead are clearing, allowing for a bit more cooling before sunrise. Travelers should exercise caution this morning has roads may be slick in light of below- freezing road temperatures.
946 AM EST Sun Jan 23 2022 A weak cold front will bring snow showers to southeast West Virginia this evening into tonight.
What we will see is a push of cold air that gradually sinks temperatures throughout the day eventually reaching near freezing this evening. Overnight Sunday into Monday, low level winds return to southerly which advects warmer air into the region. Compression of the pressure gradient ahead of another forthcoming cold front accelerates this flow pushing 50F temperatures up to the MO River with northern MO seeing highs in the upper 40s. However, while this cold front increases the flow of warm air northward, it also signals the approach of another polar blast of cold dry air. The extended outlook is more of the same with winds oscillating between south and north yielding warmer and colder temperatures respectively. VFR conditions expected, although will monitor trends for MVFR cigs around sunrise with cold frontal passage.
A ridge of high pressure remains overhead, and the upper air sounding released shows a pretty strong subsidence inversion that is relatively strong, even if shallow. Temperatures will be modest in the mid to upper 50s in the West Side Valleys (a little cooler in the Umpqua due to prolonged cloud cover), and in the 60s near the Coast. East of the Cascades, expect temperatures in the low 50s.
This will help temps fall below freezing once again reaching the mid 20s. It will also be a set up where if there is enough moisture, a few locations that see patchy freezing fog late tonight/early Monday morning. A cold front slipping southeastward into the region will confine how far north the system will go and keeps it down along or south of the Gulf Coast. Models continue to push the track of the low southward, decreasing the chance for precipitation across the TN Valley. The ECMWF remains the driest solution with progging the track of the low the farthest south.
311 AM CST Sun Jan 23 2022 The same old pattern aloft continues over the region through Monday, featuring a ridge along the west coast, and downstream troffing over much of the CONUS. It should be mostly snow, but the west edge of the pcpn band may support a mix of types as warmer air aloft advects east over the colder areas of northeast South Dakota. Again, the northeast CWA is probably the area to receive the highest amounts, where up to 3 inches look possible over the Coteau. High pressure on the order of 1040mb will be overhead to start the period, with associated arctic cold and little warmup during the day.
Looking at current satellite, strong high pressure is centered off the Oregon coast with high pressure extending into our area in Northwest flow aloft. By Monday afternoon the high pressure weakens as a system drops down from Montana mainly impacting our eastern borders.
Meanwhile, a cut-off upper low continues to spin over southern AZ. Northwest flow aloft will remain over the Plains for today and tonight as the cut-off low over the Desert Southwest starts to push east. This will result in a cold front surging south across the Plains on Mon night. Still looking for snow to overspread the Central Rockies into the High Plains on Tue into Tue evening. However, we are not going to escape the colder air, with highs Tue not expected to make it much above freezing.
Northwest flow aloft was in place over the northern and central Plains in between a deep upper low over Hudson Bay and an upper ridge situated just off the west coast of North America. This will push a cold front south across western Kansas during the morning. Somewhat cooler air will spread into the region behind the front with high temperatures topping out in the low to mid 50s to near 60 along the Oklahoma border.
Otherwise, Colorado is positioned between brisk north-northwest flow over the northern US plains, and a weakening upper low over Arizona. This low is expected to gradually move to the east through the day, well to the south and will have no impact on local conditions.
An upper level low, currently near the Baja region, is expected to move to the north and east into West Central Texas Sunday night into Monday. QPF amounts don't look particularly heavy with the highest totals around 0. Daytime highs are expected to rise into the low to mid 60s.
Water vapor imagery highlights a short wave trough pivoting through Florida, which likely is responsible for the cold front making progress to the south through the Straits of Florida. Given the NVA on the back of the short wave trough, the front should continue to sag to the south for the next several hours. Meanwhile, a weak bead of low pressure over the northern Bahamas should coalesce within the favored eastern flank of the short wave, adding to the impetus for equatorward movement of the front through this evening.
/Issued 1207 AM CST Sun Jan 23 2022/ /Through Tonight/ An ejecting Four Corners upper low will gradually lead to the onset of southerly return flow over the next 24 hours.
A backing of the surface winds will occur as low pressure develops along the Lower Texas Coast and begins to move east. This low, with an associated cold and warm front, will then move east on Monday, producing scattered to numerous showers and isolated thunderstorms and very slightly warmer temperatures for Deep South Texas and the Rio Grande Valley on that day.
Tonight's clipper tracked further north than anticipated, which brought warmer and drier into areas south of highway 30. With the more northern track of the low, the snow band shifted north as well. Still expecting snow totals of 1 - 3 inches north of highway 30 with the highest amounts around Dubuque and points to the east. Recently issued a Special Weather Statement because patchy freezing drizzle developed along the I-80 corridor. The radar shows the light precip quickly moving to the SE, so don't expect the freezing drizzle to last very long.
228 AM MST Sun Jan 23 2022 Latest RAP analysis shows a low pressure system over the upper Midwest which is bringing breezy winds over the eastern portion of the CWA as HLC has seen gusts of 25 knots. Over the western CONUS has a ridge as the High Plains remains in northwesterly flow. Winds are expected to become breezy as weak lee trough moves through the area. Breezy conditions are again anticipated to develop as winds become northerly at 15-20 knots and gusts up to 30 knots possible as pressure gradient tightens behind the trough.
This low, with an associated cold and warm front, will then move east on Monday, producing scattered to numerous showers and isolated thunderstorms and very slightly warmer temperatures for Deep South Texas and the Rio Grande Valley on that day.
This warmer trend will continue into this afternoon. A weak cold front will drop SE into the state throughout the day. The warmer conditions will persist into Mon as well. A new cold front will drop south into the state at the end of the short term as moisture associated with the weakening upper wave exits the region.
311 AM CST Sun Jan 23 2022 Tonight's clipper tracked further north than anticipated, which brought warmer and drier into areas south of highway 30. With the more northern track of the low, the snow band shifted north as well. Still expecting snow totals of 1 - 3 inches north of highway 30 with the highest amounts around Dubuque and points to the east. Recently issued a Special Weather Statement because patchy freezing drizzle developed along the I-80 corridor. The radar shows the light precip quickly moving to the SE, so don't expect the freezing drizzle to last very long.
No surprises this morning, with the upper low just west of Tucson pushing slowly east and through SE AZ / northern Sonora today. Some outlying locations around Tucson metro could drop to freezing, but most of the city is not expected to see a freeze at this point. Our low will shear into the base of the broad central and eastern CONUS trough as a strong ridge builds along the west coast. It looks like the ridge will dominate this far west, with only glancing blows as systems dive into the base of the mean trough position downstream. That means breezy conditions at times along with some reinforcing cooler air to retard any warming trends until later in the week. An upper level low will move east across the area today, resulting in scattered valley rain and mountain snow showers.
Some mid level cloud cover will begin to intrude from the SW early MON morning ahead of an approaching upper level trough of low pressure, but lower CIGS and rain will hold off until beyond this current forecast cycle.
701 AM EST Sun Jan 23 2022 Quick-moving low pressure will bring 2 to 4 inches of snow to the area today.
High pressure will continue to be the dominant feature this week with a few weak disturbances to bring some cloud cover and very light snow to western Montana. Central Idaho is too far west and too close to the ridge axis to have significant impacts from any short waves moving through.
Otherwise, we're still looking at a noticeably warmer day followed by increasing cloud cover and rain chances beginning early tomorrow morning. -Stalley Previous Discussion: /Through Tonight/ An ejecting Four Corners upper low will gradually lead to the onset of southerly return flow over the next 24 hours.
653 AM EST Sun Jan 23 2022 High pressure will move east this morning. A cold front will cross the region later this afternoon through tonight. High pressure will cross the region Monday.
Coastal troughing will become better defined today along the Lower TX Coast all the while cool surface ridging holds firm across our region with abundant clouds. Saturated isentropic upglide from 295-300K will keep this cloud layer intact before deepening considerably tonight in response to a compact upper low entering the Trans-Pecos. At present, models are trending a bit faster with this drying which argues keeping our milder highs out west, although still not as warm as the NBM given the cooler CONSMOS and CONSSHORT output.
1009 AM EST Sun Jan 23 2022 High pressure will build in early this week keeping the area dry and cold.
233 PM EST Sun Jan 23 2022 Dry and warming high pressure remains over our area through Monday.
We'll see another good radiational cooling night tonight with widespread freezing temperatures before southwesterly low-level flow begins during the day on Monday.
Highs will be similar to today, however, the "cooler" temperatures will be across our southern zones where cloud cover and rainfall should inhibit rising temperatures, keeping them in the lower to mid 50s. Areas to the north may see some clear skies Monday night which will allow temperatures to drop more than where cloud cover hangs on, so lows will range from the lower to mid 30s where skies are clear to the lower to mid 40s where cloud cover lingers.
A quick update this morning to allow the Dense Freezing Fog Advisory to expire across the Arco desert. Patchy areas of freezing fog remain, particularly near Tom Cat Summit and Craters of the Moon but a large portion of the warned area has seen improving conditions. Huston Looking at current satellite, strong high pressure is centered off the Oregon coast with high pressure extending into our area in Northwest flow aloft. By Monday afternoon the high pressure weakens as a system drops down from Montana mainly impacting our eastern borders.
Though snowfall amounts will be on the lower end, this could still impact the Monday morning commute with slippery roads.
Wind speeds will go back and forth around the dial, but speeds will overall be light until tomorrow afternoon behind a cold front.
Enhanced upslope could be possible along the highest elevations in the eastern mountains. Behind the departing clipper, northwest flow will continue to be present which could keep low clouds and slight warmer temperatures across the area. Overnight and high temperatures will be warmer than they have been but remaining below average.
137 PM MST Sun Jan 23 2022 Current surface map places warm front across the central Dakotas.
An upper level low that is currently across northern Mexico and southern portions of the Desert Southwest, will track east overnight, eventually tracking across the forecast area Monday afternoon. Expect high temperatures on Monday in the low to mid 60s.
1125 AM EST Sun Jan 23 2022 Quick-moving low pressure will bring 2 to 4 inches of snow to the area today.
At the surface, an expansive high pressure is currently dominating over much of the South Central and Southeastern states. Over the local area, surface winds shift to southerly as a result of the retreating high pressure. Overall, Monday will be warmer than the last few days and dry.
SHORT TERM (Now through Monday Night): Fairly strong westerlies aloft, abundant low level moisture, and coastal low pressure keeps portions of Deep South Texas, especially the lower RGV, socked in with thick clouds and overrunning light rain or drizzle. A mid level trough swings through Texas on Monday, providing additional lift and better moisture aloft. This will increase rain chances from west to east tonight and continue through most of the day Monday, kicking offshore with the 500mb trough axis Monday evening into Monday night.
With temperatures already running about 10 degrees warmer than this time yesterday, today should be *a little* more bearable than yesterday. Put that together with surface winds picking up over the next couple hours to the point of giving us a few gusts of 15-20 mph, even with highs in the 40s this afternoon, Wind Chills will make it feel cooler -- ergo, a little more bearable than yesterday. WSW winds will be gusty to 18KT at times this afternoon as a dry cold front approaches. Winds will quickly return to SSW around 15Z as another cold front approaches.
322 AM CST WED FEB 11 2015 COMBINATION OF SATL PIX/SFC OBS SHOWING EXTENSIVE LLVL CLOUD COVER MOVING ALONG WITH A COLD FRONT WITH THE LEADING EDGE OF THE BNDRY EXTENDING FROM ABOUT SRN IA TO NW KS.
COOL AGAIN TONIGHT WITH LOWS RANGING FROM THE LOW TO MID 30S OVER THE INTERIOR COUNTIES AND MID TO UPPER 30S CLOSER TO THE COAST. SLIGHTLY WARMER TOMORROW THAN TODAY. WITH HIGH TEMPERATURES IN THE LOW TO MID 60S.
BEFORE THE EASTERN UPPER TROUGH RELOADS WITH ANOTHER CHUNK OF ARCTIC AIR ACROSS THE MIDDLE ATLANTIC, HIGH PRESSURE AND NEARLY ZONAL UPPER FLOW WILL PROVIDE A TRANQUIL AND LESS BREEZY THURSDAY THROUGH SOUTH FLORIDA. BY THURSDAY EVENING, THE COLD FRONT DELIVERING THE FIRST SIGNIFICANT PERIOD OF COLD AIR ADVECTION WILL BE POSITIONED ACROSS NORTHERN FLORIDA.
OF A BIGGER CONCERN NOW MAY BE A PERIOD FOG AND FREEZING DRIZZLE THE REST OF THE AFTERNOON INTO THE EARLY EVENING. GETTING QUITE A FEW REPORTS OF FZDZ AND EVEN VERY LIGHT FREEZING RAIN ASSOCIATED WITH THE SECOND WAVE.
BUT THE ARRIVAL OF A COLD FRONT WILL BRING AT LEAST BRIEF MVFR CIGS TO MANY TERMINALS FROM NOW THROUGH 12Z TO 15Z WEDNESDAY.
1134 PM EST TUE FEB 10 2015 CANADIAN HIGH PRESSURE WILL BUILD ACROSS THE REGION THROUGH WEDNESDAY. LOW PRESSURE WILL APPROACH FROM THE WEST THURSDAY WHILE A SECONDARY LOW DEVELOPS ALONG THE MID ATLANTIC COAST.
326 AM CST Wed Feb 11 2015 Next in a series of cold fronts making its way southward toward the CWA at this hour. Evening hours bring a break in the winds and the clouds, however secondary cold front advances southward across the area after midnight and brings in even colder temperatures in the teens. Still appears temps may be rather steady or slowly rise late Thursday night as warm air surges back east ahead of next strong upper wave rotating around the persistent upper level trough in the east.
AS UPPER RIDGING BUILDS BRIEFLY BEFORE THE NEXT SHOT OF COLD AIR ARRIVES FOR THE LATTER PORTION OF THE WEEK.
1147 PM CST TUE FEB 10 2015 LOW LEVEL LIFT HAS INCREASED TO THE POINT THAT ICE IS BEING INTRODUCED AND MUCH OF THE FREEZING DRIZZLE HAS CHANGED OVER TO SNOW. WITH ADDITIONAL ACCUMULATIONS EXPECTED TO BE MINOR AND FREEZING DRIZZLE MAINLY OVER. SOME FREEZING DRIZZLE STILL EXPECTED MAINLY SOUTHWEST OF I-94 THIS EVENING. MAY ALSO HAVE TO EXTEND THE ADVISORY A COUPLE/FEW HOURS AS THERE IS SOME INDICATION THAT THERE MAY STILL BE SOME LINGERING FREEZING DRIZZLE AFTER MIDNIGHT.
STRONG FORCING WITH UPPER LOW WILL EXIT TO THE EAST THIS EVENING TAKING MOST OF THE SNOW WITH IT. WINDS INCREASE ON THE BACKSIDE WITH THE COLD FRONT MOVING THROUGH OVERNIGHT.
1127 PM CST Tue Feb 10 2015 Fair conditions dominating this afternoon all in advance of cold front that will pass across the region during the overnight hrs tonight. latest ACARS soundings from MCI only showing effective mixing up through the lowest 2 kft feet of the atmosphere. expect mostly clear skies with weakening winds as the frontal trough approaches. with fcst soundings more than suggestive that low stratus will take up shop across the lower Missouri Vly during the early morning hrs as cold air advection commences. have sided with the cooler MET guidance for temp trends through the period. as high pressure settles into the American Southeast. expect a gradual warming trend on Fri with highs likely rebounding into the lower to middle 40s.
311 AM EST WED FEB 11 2015 THE PRESSURE RIDGE EXTENDING THROUGH THE FORECAST AREA TODAY WILL BE OFF THE COAST TONIGHT. AN APPROACHING DRY COLD FRONT WILL MOVE THROUGH THE FORECAST AREA EARLY THURSDAY.