Aikyam-Lab/Synoptic-Bench huggingface dataset:
High pressure will continue to build into the Southeastern United States tonight allowing for the breezy to windy flow to become more northeast tonight. A mid to upper level trough over the Eastern United States will continue to move eastward into the Atlantic Waters, as high pressure builds into the Southeastern United States. Until that time our position along the southern periphery of the low-level ridge will keep the pressure gradient robust resulting in breezy winds and hazardous beach and marine conditions. While generally dry weather is anticipated with high pressure in control enough low-level moisture persists for periodic low-end shower chances at times for the Atlantic waters and east coast.
1226 AM EST Mon Mar 8 2021 High pressure through the middle of this week with a warming trend. However, don't think this will have a big influence on lows so still expecting overnight lows in the low 20s across the lowlands and teens in the mountains. A high pressure system will provide dry weather for tonight and Monday.
1030 PM CST Sun Mar 7 2021 Despite the fact that a weak cold front will pass through the area late tonight and Monday morning, spring continues to make its presence known with above normal temperatures.
1003 PM EST Sun Mar 7 2021 Deep trough axis is now moving off the U. No appreciable shift in the low level confluence off the Upper Keys is expected, with showers remaining offshore.
/issued 242 AM CST Mon Mar 8 2021/ Chamber of Commerce weather weather will continue across the Mid- South today as a ridge builds over the central CONUS. The trough over the East Coast will lift out today but a strong trough will dig into the western CONUS through midweek. For our neck of the woods, we're looking at conditions similar to what we saw yesterday, albeit 3-5 degrees warmer. As the trough digs over the west the next few days, a corresponding ridge will build over the east. This will result in southwest flow aloft that will increase through late week as a strong subtropical jet rounds the base of the trough and propagates over the Plains.
In the low levels, a lee trough currently analyzed over the High Plains will deepen in place with winds increasing from the south. Similar to past days, we will stay on the high side of guidance for afternoon temperatures, though an earlier arrival of the above- mentioned clouds could have an impact on peak readings. Tonight and Tuesday: Downstream from a deepening trough along the West Coast, mid/upper- level wind maxima will develop northeast into the northern plains with a separate jet extension and associated mid-level perturbation moving from the southern Rockies into central Plains.
and low relative humidity values this afternoon are forecast to drop into the 20th percentile across our region with the lowest values of 20-25 percent forecast across north central KS into southern Neb. The warm weather will peak on Tuesday ahead of an approaching cold frontal boundary. The lowest RH values Tuesday will coincide with the lighter wind speeds. The frontal boundary may focus elevated convection across our east/northeast Nebraska counties heading into Tuesday evening/night with the main area of convection shifting eastward into the overnight hours on the nose of the low level jet. The cold front will continue to advance south during the day Wed, separating colder temps (50s/low 60s) north of the boundary from still warm temps (70s) to the south.
527 AM CST Mon Mar 8 2021 Dry conditions, breezy southwest winds, and warmer than normal temperatures are expected across the area today and Tuesday.
At the surface, high pressure was centered to the northeast of our CWA. The upper ridge will move across Texas today.
Satellite water vapor imagery this morning is showing a well-formed low pressure circulation off the coast of British Columbia. For the short term, Pacific moisture will stream into the Pacific Northwest ahead of the low today. The higher terrain of the Bitterroot, Mission, Clearwater, and Swan Ranges will see more appreciable snowfall, about 4 to 10 inches. As such, Winter Weather Advisories will be limited to the higher elevations of north- central Idaho and southwest Montana through Tuesday morning.
413 AM CST Mon Mar 8 2021 The main story is continued very mild temperatures and elevated fire danger today and Tuesday, under the continued influence of stout upper-level ridging. Today, southeast winds and a cirrus shield in response to an incoming area of low pressure may put a limit on just how warm temperatures can get.
(Today and tonight) It will be breezy today across the Big Country, Concho Valley and Crockett Country, as the lee trough strengthens in West Texas. It will also be warmer tonight, with lows in the lower 50s.
It's likely this High Wind Watch will be upgraded to a warning later this morning.
350 AM CST Mon Mar 8 2021 Dry conditions, breezy southwest winds, and warmer than normal temperatures are expected across the area today and Tuesday.
503 AM PST Mon Mar 8 2021 Through Tuesday, cooler with more clouds along and west of the mountains and stronger and gusty southwest to west winds in the mountains and deserts.
A warming trend will continue through the first half of the week with temperatures climbing into the lower 70s today and mid 70s on Tuesday. Broad high pressure over the eastern U. High cloud cover will increase some later today, but we should generally maintain mostly sunny skies with highs in the lower 70s.
/issued 134 AM EST Mon Mar 8 2021/ An exiting longwave trough along the North American East Coast will allow high pressure to build along the Appalachians and Mid Atlantic states. This high pressure system will expand to cover the entire Southeast continue through midweek until it slowly drifts out to sea. This is in response to a longwave trough digs into the West Coast lowering pressures over the Plains. The positively tilted trough in the west slowly drifts east and develops into a Rex Block over the southwest states by the weekend. Winds will veer and lighten today, warmer air and higher moisture will slowly return.
432 AM EST Mon Mar 8 2021 Weak upper ridging builds into the region through tonight then flattens Tuesday as a weak short wave moves over the top across the Ohio/Tennessee Valleys. 20 Building high pressure ridge and precipitation free conditions expected to continue through the end of the week. The high pressure ridge keeping things dry in the short term will push off the GA/Carolina coast Tuesday afternoon.
Broad high pressure over the eastern U. High cloud cover will increase some later today, but we should generally maintain mostly sunny skies with highs in the lower 70s.
519 AM EST Mon Mar 8 2021 High pressure will build today and move east tonight.
Between these surface features, southwest flow continues to gradually pull warmer air into the region and will continue to do so over the next several days.
320 AM MST Mon Mar 8 2021 C urrent surface map show weak high pressure across the Dakotas. Flat upper ridge located across the plains, with some high clouds spreading in from the west. Upper trof works into the western CONUS today, with lead impulse lifting through the northern Rockies tonight. Cold front enters northeast Wyoming/northwest South Dakota early Tuesday.
551 AM CST Mon Mar 8 2021 (Today and tonight) It will be breezy today across the Big Country, Concho Valley and Crockett Country, as the lee trough strengthens in West Texas. It will also be warmer tonight, with lows in the lower 50s.
High pressure centered over the Ohio Valley will continue to expand over the area and will provide Central Alabama with dry conditions for the short term. The dry airmass amd maximum heating will allow temperatures to once again exceed guidance, so went on the high side of guidance values for today and Tuesday.
425 AM MST Mon Mar 8 2021 Current surface map show weak high pressure across the Dakotas. Flat upper ridge located across the plains, with some high clouds spreading in from the west. Upper trof works into the western CONUS today, with lead impulse lifting through the northern Rockies tonight. Cold front enters northeast Wyoming/northwest South Dakota early Tuesday.
The main story is continued very mild temperatures and elevated fire danger today and Tuesday, under the continued influence of stout upper-level ridging. Today, southeast winds and a cirrus shield in response to an incoming area of low pressure may put a limit on just how warm temperatures can get.
These are associated with a weak mid-level trough and 850mb warm air advection, and should sag southeast the trough moves through, but confidence is not high about when they will clear far southern WI. Clouds will impact how quickly we can warm into the lower to mid 50s today. With dewpoints in the lower 30s and light/variable winds, we could see some patchy fog develop, especially in low spots.
In fact the mixing ahead and behind the system is providing a mild start to the day and high temperatures today could close in on some records in the lower western elevations. There will be split jet aloft as the Polar and SubTropical streams will be merging with a strong upstream trough digging into the West late in the day.
652 AM EST Mon Mar 8 2021 It will be warm and breezy today with highs into the lower to middle 60s this afternoon.
619 AM EST Mon Mar 8 2021 High pressure traveling from Southeast Ohio to the Carolinas will provide dry weather and milder temperatures today.
A quick glance at forecast soundings suggest the potential for freezing rain late tonight and Tuesday morning in the eastern half of the CWA, with a light glaze--enough to impact travel--possible Tuesday morning in the northeastern portion of the CWA (mentioned above).
Shower chances will increase across the region by this afternoon as the next vort swinging around the base of the closed low off the PacNW coast moves in.
855 AM CST Mon Mar 8 2021 High pressure and sunny skies will feature today. Winds should remain light with high pressure centered just to the northeast. Highs today will climb into the mid to upper 60s with a few locations making it into the low 70s. The base of the mid-level ridge will shift eastward across the local area tonight, with winds aloft predicted to back to the west- southwest and strengthen as a weak vort max travels east- northeastward from the central High Plains into the MO Valley.
High pressure and warm temperatures will give way to an area of low pressure to our northwest this week. Any breaks in clouds could allow for a degree or two warmer this afternoon. An unsettled pattern is shaping up this week with much cooler temps, breezy/windy conditions, patchy blowing dust downwind of dust source regions, elevated fire weather, and a slight chance/chance of valley rain showers and mtn snow showers.
Light southerly flow on the surface is keeping temperatures just a touch warmer versus this time last night. Upper ridging is over the southern United States this morning and expected to move/build to the southeast quadrant of the nation as the period progresses. As such, west to southwest flow aloft will be getting well established, aided by a deepening trough moving onto the west coast. Temperatures will continue to run above seasonal normals with widespread highs in the mid 60s to lower 70s today and even a few degrees warmer for Tuesday.
Weak upper ridging builds into the region through tonight then flattens Tuesday as a weak short wave moves over the top across the Ohio/Tennessee Valleys. 20 Building high pressure ridge and precipitation free conditions expected to continue through the end of the week. The high pressure ridge keeping things dry in the short term will push off the GA/Carolina coast Tuesday afternoon.
A very dry subsident air mass courtesy of strong high pressure along the eastern seaboard will support pleasant dry conditions with ample sunshine across all of west central and southwest Florida the remainder of today. Similar to yesterday it will become breezy by mid to late morning as the high pressure to the north maintains a tight pressure gradient over the region. As for the remainder of the week high pressure will remain in control as it moves east into the Atlantic with moderate northeast winds becoming east with nocturnal surges into the Cautionary range a good bet each day during the evening and overnight time periods.
Aloft, the flow will flatten a bit, even though ridging will linger across the area. Mid 50s to around 60 can be expected for much of the area; however, where snowpack remains (over the Northwoods) temperatures will be kept a bit cooler. Temperatures along the Lake Michigan shoreline will also be kept on the cooler side. At the same time, a low pressure system will slide across the northern Plains. Ahead of the low, a warm front is expected to lift northward toward central Wisconsin overnight. Tuesday: The warm front is expected to lift to the north of the area by late Monday afternoon. Again, not expecting any precipitation along the warm front; however, cloud cover will linger near the front with clearing expected to the south of the front.
An upper level ridge currently over the Plains shifts east and will be over the eastern Conus by Tuesday evening. The low level ridge is slow to organize and bring return flow off the Gulf into the Southeast, but a more significant moisture return does begin on Tuesday. Increasing upper subsidence from the shifting upper ridge will increase high temperatures to near seasonal levels today (low 70s) and a bit above on Tuesday (low to mid 70s). Increasing upper subsidence from the ridge aloft will bring an slight uptick in low temperatures tonight, with upper 30s to mid 40s expected.
Slightly higher relative humidity is also expected compared to this morning, so some patchy frost was included in the forecast for these cooler locations.
A weak cold front associated with the northern wave has settled in northern Nebraska with south winds dominating Kansas and Oklahoma. Have kept highs on the warmer end of guidance with good insolation.
249 AM MST Mon Mar 8 2021 Current surface map show weak high pressure across the Dakotas. Flat upper ridge located across the plains, with some high clouds spreading in from the west. Upper trof works into the western CONUS today, with lead impulse lifting through the northern Rockies tonight. Cold front enters northeast Wyoming/northwest South Dakota early Tuesday.
A cooler, more cloudy pattern is expected for the mid part of the week with a return to drier conditions late this week.
856 AM EST Mon Mar 8 2021 High pressure will build today and move east tonight.
the lowest temperatures should be around late evening or midnight. Latest HRRR, RAP, and GFS are indicating higher mixing depths and warmer highs Tuesday /versus NAM/. full sun, warmer start in morning, mixing above 850 mb occurs, and model guidance is slightly low in the low-level temperature forecast.
An upper ridge will continue to build over the area through Tuesday. Highs on Tuesday will climb rapidly, into the low to to mid 70s inland to upper 60s near the coast.
1213 PM CST Mon Mar 8 2021 (Today and tonight) It will be breezy today across the Big Country, Concho Valley and Crockett Country, as the lee trough strengthens in West Texas. It will also be warmer tonight, with lows in the lower 50s.
High pressure and sunny skies will feature today. Winds should remain light with high pressure centered just to the northeast. Highs today will climb into the mid to upper 60s with a few locations making it into the low 70s. The base of the mid-level ridge will shift eastward across the local area tonight, with winds aloft predicted to back to the west- southwest and strengthen as a weak vort max travels east- northeastward from the central High Plains into the MO Valley.
Temperatures early this afternoon have warmed into the low to mid 60s and could see a few locations climb to the 70 degree mark. The upper level pattern features a ridge that extends from the Lower Mississippi River Valley northwards into the Northern Plains. The ridge is bookend by a couple of troughs, one over the Western Atlantic and another across the Rocky Mountains. At the surface, high pressure is centered just to the north and east of the area. Fog formation is not expected overnight with the low dewpoints. The upper level ridge axis will move overhead during this timeframe.
156 PM EST Mon Mar 8 2021 A broad area of high pressure will keep dry conditions in place well into the workweek.
the lowest temperatures should be around late evening or midnight. Latest HRRR, RAP, and GFS are indicating higher mixing depths and warmer highs Tuesday /versus NAM/. full sun, warmer start in morning, mixing above 850 mb occurs, and model guidance is slightly low in the low-level temperature forecast. This will allow even warmer air from aloft to mix to the surface. As a result, it looks like most places should be able to get into the lower and mid-60s. The highest chance for warm low records will be mainly along and west of the Mississippi River.
A very dry airmass continues over the entire southeastern US late this morning as large area of high pressure settles overhead.
232 PM EST Mon Mar 8 2021 High pressure is currently centered along the southeast GA coast. Little movement of the high center is expected overnight, but should begin to push offshore tomorrow. The good news is that low level moisture should begin to return to the CWA as the high center moves offshore.
Adjusted hourly and max temperatures to account for slightly warmer trend. A dry air mass remains locked in over Middle Tennessee due to the effects of high pressure.
The dry air mass and light winds will set up ideal conditions for radiational cooling tonight, with fairly large temperature differences between low-lying cold pockets and the warmer bubbles.
Previous Discussion: Pressure ridge over the area will move to the coast tonight.
/Issued 620 AM EST Mon Mar 8 2021/ Weak upper ridging builds into the region through tonight then flattens Tuesday as a weak short wave moves over the top across the Ohio/Tennessee Valleys. 20 Building high pressure ridge and precipitation free conditions expected to continue through the end of the week. The high pressure ridge keeping things dry in the short term will push off the GA/Carolina coast Tuesday afternoon.
This trough will put the region into SW flow aloft.
127 PM MST Mon Mar 8 2021 Water vapor shows large upper trof covering the western CONUS with main low off the Pac NW coast. At the surface, trof is deepening along the northern/central Rocky Mountain front, with breezy southeasterly winds across our region. For tonight, pressure gradient strengthens ahead of an approaching cold front, with 3-5mb difference across the Black Hills and winds towards the top of the boundary layer near 40kts. Cold front moves through early in the day, with good mixing both ahead of and behind the cold front resulting in some gusty northwest winds and temps rising into the 60s east/south of the Black Hills and 70s in south central SD.
Models show a weak surface/coastal trough axis developing overnight across the Gulf Stream. On Tuesday the trough moves downstream (southward to Cuba) leaving our region with a dry northerly upper level flow. A mid to upper level anticyclone will center over the Gulf of Mexico as meridionally elongated low-level ridging prevails from the South Atlantic States into the eastern Atlantic.
In the low levels, a lee trough currently analyzed over the High Plains will deepen in place with winds increasing from the south. Similar to past days, we will stay on the high side of guidance for afternoon temperatures, though an earlier arrival of the above- mentioned clouds could have an impact on peak readings. Tonight and Tuesday: Downstream from a deepening trough along the West Coast, mid/upper- level wind maxima will develop northeast into the northern Plains with a separate jet extension and associated mid-level perturbation moving from the southern Rockies into central Plains.
302 PM EST Mon Mar 8 2021 Synopsis/Discussion/Marine - Freezing fog risk tonight to Tue AM - Rising rivers into the weekend - Gusty winds especially Wed night to Thu - Freezing fog risk tonight to Tue AM A weakening cold front will drop down from the northwest tonight and dissipate over the region. As winds taper off and temperatures cool down a risk for fog/freezing fog could develop. With temperatures likely to fall below freezing especially northeast parts of the CWA. we will carry a local freezing fog risk.
Expect the dry weather to continue through tomorrow as HREF is showing the upper ridge currently over central CONUS to remain over Missouri and Illinois before moving east tomorrow night.
Sunny skies have allowed temperatures to rise into the low to mid 60s areawide amid a cool, breezy onshore flow. Lows are will be in the low to mid 30s across inland southeast GA, upper 30s to low 40s across inland northeast FL, and in the low 50s along the immediate coast with the onshore flow. Some areas across north may touch the freezing mark but this is expected to brief and localized, so opted against any freeze headlines.
Showers, mainly snow, will continue through the day as a short wave trough ejects inland across Oregon from the main upper low off the Oregon coast.
A strong high pressure system will expand east and elongate into the western Atlantic, causing winds to veer to NE today and ENE tonight.
A cooler and more active weather pattern is expected Tuesday through the end of the week. The mean ridge previously over the Rockies continues to shift eastward. A broad upper level trough and associated upper level low remain off the Pacific Coast. The upper level low will gradually shift southward through the day. A cold front will move through between 04-06Z shifting winds northwest, which will remain gusty for a couple of hours.
A weak low pressure system moving across Arizona has brought cloud cover and a few sprinkles or flurries to portions of northern Arizona this morning.
With the persistent southerly flow, moisture will continue to increase across the area, with dew point values expected to rise into the lower 50s by tomorrow morning, resulting in warmer overnight lows in the 50s. Although we will have to deal with clouds for much of the day on Tuesday, we should see another increase in temperatures, resulting in highs in the low to mid 70s, especially if we can get some breaks in the clouds.
149 PM EST Mon Mar 8 2021 A broad area of high pressure will keep dry conditions in place well into the workweek.
As such, a warming trend will be underway, with lows tonight running 3-6 degrees warmer than last night.
117 PM EST Mon Mar 8 2021 High pressure will hover over the Southeast through tonight, then move off the coast mid to late week. Dewpoints rapidly decreased and there are observations in the low to mid teens. The area is quite dry with RH's in the low to mid teens as well. Tonight: High pressure will be centered across the region and clear skies with calm winds are expected. The mid-levels will consist of a broad ridge with its axis over the MS Valley Tuesday morning.
223 PM EST Mon Mar 8 2021 High pressure will remain over the region through much of the week, with gradually warming temperatures. High pressure will remain over the Carolinas. The combination of clear skies and calm winds will result in good radiational cooling, but with gradually rising thicknesses, lows should be a few deg warmer than last night. Lows in the lower 30s. High pressure will remain over our area, although it's center having moved offshore. Otherwise, with BL flow form the SW, look for WAA and temps several deg warmer than today.
Clouds will gather, thicken and lower mid to late week with shwrs arriving ahead of next upper low.
400 PM EST Mon Mar 8 2021 Temperatures have risen to the lower to mid 70s this afternoon across the Florida Keys, near forecast highs for the day. This is due to the 1035 mb high pressure cell over the Carolinas moving slowly to the eastern seaboard. Dew points are mainly in the lower 50s as drier air from aloft reaches the surface in a well-mixed boundary layer. Chances look best across the Lower Keys and out into adjacent portions of the Straits, where areas of drizzle and scattered light showers may develop.