Aikyam-Lab/Synoptic-Bench huggingface dataset:
1212 PM CDT Mon Apr 7 2025 - Sub-freezing temperatures are expected again tonight. Skies will remain mostly clear with highs reaching the lower 60s. A Freeze Warning is currently in effect until 9 AM this morning for sub-freezing temperatures occurring across the area. Went ahead and upgraded the Freeze Watch to a Freeze Warning for all of the CWA again tonight from 11 PM to 9 AM Tuesday for sub- freezing temperatures occurring again tonight (27-33 degrees). Mid-level high pressure moves over the area on Tuesday and warm air advection will allow us to warm up through the rest of the week with highs reaching the 60s and 70s by mid-week.
- Small precipitation chances expected midweek, then drier and warmer weather expected for the end of the week.
Once the frontal line moves through tomorrow, a cooler, dry air mass will filter in. The cooler, closer to average temperatures stick around for a couple days as high pressure tries to build back in.
(This evening through Tuesday night) A broad scale H5 trough will continue to reside over the eastern U. This will keep conditions cooler, much cooler than last week with overnight lows dropping into the 40s or lower 50s across the region during the overnight. We are starting to get into more of a direct sun angle here in early April so surface heating will be a bit more efficient so despite the lower thicknesses and heights daytime temperatures will remain mild despite modest CAA that will be decreasing in time.
Brrrr! Later tonight, high pressure will begin build in and bring clearing skies and decreasing winds. Tuesday will bring back the sunshine, but it will remain cool with highs below normal and ranging from the mid 40s to the lower 50s.
239 PM EDT Mon Apr 7 2025 Expect dry and cooler conditions from tonight through midweek.
127 PM EDT Mon Apr 7 2025 A cold front will slowly progress east across the area through tonight.
A broad upper trough sitting over the PNW will lend favor to largely zonal flow across northern CA, sending a steady stream of cloud cover into the region. Showers are expected to diminish slightly this afternoon and evening, with cooler temperatures in the upper 30's likely in the northern valleys of Mendocino and Lake, including Round Valley and Laytonville; probabilities seem to just miss the mark on Frost/Freeze products, especially with lingering cloud cover. The greatest impacts will likely be minimal and once again confined to Del Norte County, but breezy conditions with gusts 15 to 25 mph are likely across the Humboldt coast and elevated ridges in the coast ranges north of Cape Mendocino.
624 PM CDT Mon Apr 7 2025 Tonight through Tuesday: The upstream low level thermal trough will begin to weaken and become less defined, and this will result in decreasing cold advection and low cloud cover as we go through the near term.
542 PM CDT Mon Apr 7 2025 - A widespread freeze will impact sensitive vegetation tonight with the entire region falling below freezing. The entire region remains heavily favored (80-90% chance) to cool below freezing, which will threaten any tender vegetation.
547 PM CDT Mon Apr 7 2025 - Sub-freezing temperatures are expected again tonight. As a result, another chilly night is in store, with overnight lows in the upper 20s to low 30s, with the higher end of that range (low to mid 30s) towards the MO/AR border. With temperatures below freezing, mostly clear skies, and light winds, conditions are favorable for widespread frost/freeze to occur on sensitive vegetation. The upper level ridge continues building over the region on Tuesday, with surface winds shifting out of the south. With the high pressure remaining in place at the surface, conditions will remain dry through the short term.
400 PM MST Mon Apr 7 2025 Updated Aviation Above normal temperatures will be prevalent throughout this week and into the weekend with high pressure aloft building over the region.
739 PM EDT Mon Apr 7 2025 - Cooler, and breezy into this evening, with light rain and snow showers possible through the afternoon. - Temperatures back well below freezing into the lower to middle 20s tonight and again Tuesday night.
Due to the clouds and weak cold advection, temps will struggle to reach the 55-60F range and may stay in the lower 50s in elevated terrain.
623 PM CDT Mon Apr 7 2025 (Tonight through Tuesday night) High pressure has settled over Deep South Texas, resulting in clear skies, precipitation-free conditions, and pleasant temperatures. Tonight and tomorrow night's low temperatures are expected to be cool, with low temperatures in the upper 40s/lower 50s tonight, and the low-to-mid 50s tomorrow night. Radiational cooling due to clear skies and light winds could result in even cooler temperatures in localized areas.
Expect slightly warmer temps each day with beautiful weather all week. Skies have cleared the area as high pressure centered over TX continues to build eastward. This did not affect overnight lows significantly though, as temperatures are still expected to reach the lower 40s across the northern zones to mid/upper 50s south.
A cool day is expected on Tuesday as an upper trough axis shifts toward the Atlantic coast and northwest flow aloft reinforces a seasonably cold airmass.
536 PM CDT Mon Apr 7 2025 - Freezing temps likely once again late tonight, prompting the headline to be upgraded to a Freeze Warning.
Discussion: Longwave troughing across the Appalachians and Eastern CONUS will portend another unseasonable cool afternoon with max temperatures around 10 to 15 degF colder than normal. An Arctic airmass continues to slide southward into the Ohio and Tennessee Valleys by this afternoon with this high pressure resulting in a clear sky. As high pressure becomes centered over the area tonight into Wednesday morning, we will have a cold, dry airmass across the region. Further south around Chattanooga, low temperatures will be in the low to mid 30s, but even where 2m temperatures are above freezing, we'll likely be able to have frost formation at the surface. Dry and slightly warmer on Wednesday.
Dry conditions will prevail as well thanks to the ridge of high pressure building over the Western US. High clouds continue to drift over the area as a trough moves through the Pacific Northwest. Overnight lows will be 5 to 10 degrees above average for this time of year, which means lows in the low 60s for Las Vegas.
Though temperatures will be around 5-10 degrees cooler tomorrow amid the cold advection, humidity values still look to fall into the upper teens and lower 20s across much of the area. Upper ridging amplifies across the Rockies into middle and late week, and will keep the warm, dry, and gusty fire weather pattern going. The warmest days of the period look to be this weekend, as the upper ridge axis begins to move overhead, immediately followed by the beginning of ridge breakdown.
Temperatures begin a warming trend today as high pressure builds over the Great Basin.
Early morning IR satellite imagery is showing the remains of the cold front pushing into south Florida, as a cooler and drier airmass advects into the area today under north and northwest flow.
Upper level high pressure is moving into the region and as the saying goes, big bubble, no trouble.
140 AM EDT Tue Apr 8 2025 Dry and cooler conditions return through midweek.
Some locations will see temps drop near freezing again overnight and some areas of frost will be possible tonight, with the best chances across far northeast Oklahoma and northwest Arkansas where a Frost Advisory has been issued for late tonight.
Portions of northeast Alabama and southern middle Tennessee could even see cooler high temperatures, in the lower to mid 50s.
This wind direction is keeping temperatures near 80 degrees with dew points in the lower to mid 70s. Thereafter, high pressure will quickly fill in and allow for winds to peak and lull through Wednesday night.
445 AM EDT Tue Mon Apr 8 2025 Cold high pressure will bring threat for freezing conditions tonight over much of Central NC. The high pressure will shift offshore Wednesday allowing for moderation in the temperatures.
1241 AM CDT Tue Apr 8 2025 (Tonight through Tuesday night) High pressure has settled over Deep South Texas, resulting in clear skies, precipitation-free conditions, and pleasant temperatures. Tonight and tomorrow night's low temperatures are expected to be cool, with low temperatures in the upper 40s/lower 50s tonight, and the low-to-mid 50s tomorrow night. Radiational cooling due to clear skies and light winds could result in even cooler temperatures in localized areas.
A high pressure will settle over the Northland for Tuesday along with dry air throughout the vertical column.
Current Ridging across the high plains will give way to more zonal flow across the northern CONUS By late Tuesday into Wednesday as a short wave cuts east out the PNW. The Low then digs into the southeast US where it stalls and begins to create an Omega block as thermal ridging builds across the lee of the Rockies through the late week into the weekend. As the low level pressure gradients shifts more overhead in combination with warming temps later in the week some low end fire weather concerns may bear closer monitoring. 70" or possibly a bit of a rain snow mix along the intl border where temp profiles are a tad cooler.
Northwest flow aloft will help a dry reinforcing cold front drop into the CWA by morning. /22/ Tonight through Tuesday: The upstream low level thermal trough will begin to weaken and become less defined, and this will result in decreasing cold advection and low cloud cover as we go through the near term.
Clouds move in overnight from northwest to southeast across southern Missouri helping us to keep low temperatures a bit warmer in the upper 40s especially where cloud cover occurs.
- Conditions of cool night and mild days will eventually warm by mid week until another cold frontal system moves through at the end of the week.
Expect slightly warmer temps each day with beautiful weather all week. Skies have cleared the area as high pressure centered over TX continues to build eastward. This did not affect overnight lows significantly though, as temperatures are still expected to reach the lower 40s across the northern zones to mid/upper 50s south. 24 (Tonight through Wednesday night) Wx map illustrates broad high pressure overhead with increasing subsidence aloft as reflected in the 12Z upper air sounding. Tuesday, northerly winds will be easing throughout the daylight hours accompanying a gradual rebound in daytime highs in the low 70's.
- After near freezing temperatures early this morning, a chilly day is on tap today with highs in the upper 40s to middle 50s.
Upper ridging will continue building in over our region and just to our west today, giving us warm, dry, and generally quiet weather across SE Colorado. Today's high temperatures will warm a bit from yesterday, with mid-high 50s over the high valleys and mid-high 60s over the eastern plains. Model data continues to support good mixing leading to breezy northwest winds over and near the higher terrain through the afternoon, with winds shifting to east across the plains, as the passing northern stream system sends a weak cold front across the Plains. With the passing front, high temperatures to at to slightly cooler than Tuesday across the plains in the mid 60s to mid 70s, with highs mainly in the 40s and 50s across the higher terrain and in the 50s and 60s across the high mountain valleys.
(Today and tonight) Significantly warmer temperatures are the main highlight of the short term. We will start today out in the lower 40s as opposed to the 30s like yesterday. In fact, warmer high temperatures will also be seen as highs will be in the upper 70s to lower 80s.
1220 AM CDT Tue Apr 8 2025 - Sub-freezing temperatures are expected again tonight. As a result, another chilly night is in store, with overnight lows in the upper 20s to low 30s, with the higher end of that range (low to mid 30s) towards the MO/AR border. With temperatures below freezing, mostly clear skies, and light winds, conditions are favorable for widespread frost/freeze to occur on sensitive vegetation. The upper level ridge continues building over the region on Tuesday, with surface winds shifting out of the south. With the high pressure remaining in place at the surface, conditions will remain dry through the short term. With further warm air advecting into the Ozarks, afternoon highs will climb into the low to mid 70s for much of the area.
1019 PM CDT Mon Apr 7 2025 - A widespread freeze will impact sensitive vegetation tonight with the entire region falling below freezing. The entire region remains heavily favored (80-90% chance) to cool below freezing, which will threaten any tender vegetation. Depending on the wave's strength, we have a threat for isolated to scattered showers early Wednesday morning along a developing warm front. Most of the activity will be confined to the vicinity of the low and a weak cold front that trails behind it, keeping the highest rain chances in northern Missouri and western Illinois. The cold front drops through the region during the evening Wednesday, but cooler air lags behind it.
This will usher in a much cooler and drier airmass with temperatures dropping into the 40s and 50s by morning. (Tuesday night through Wednesday night) High pressure will build over the eastern seaboard by mid-week keeping the weather dry and seasonably cool.
Upper flow becomes more zonal across the Northern Plains today downstream of H5 ridging across the western CONUS. Ptypes look to stay mostly liquid as temps remain above freezing during the day.
(Today through Wednesday) - Elevated to Critical Fire Weather conditions today (See Fire Weather Discussion for more information) Quiet and dry conditions will persist through midweek as ridge continues to meander eastwards.
309 AM EDT Tue Apr 8 2025 Dry and cooler conditions return through midweek.
1123 PM EDT Mon Apr 7 2025 A cold front will impact the region through this evening, followed by high pressure building into the region through the middle of the week. Another cold front will move through late in the week. With that, low temperatures are forecast to range from the upper 40s across the interior counties to the low to mid 50s closer the coast. Certainly a cooler and much more comfortable day on tap with highs dipping back into the lower to middle 70s and surface dewpoints falling back through the 40s.
- Low pressure moving through the region late Tuesday through Wednesday will produce a 20 percent chance for rain showers. The cooler than normal temperature trend observed today will spill over into one more relatively cool night tonight before a warming trend kicks off on Tuesday. Combining this with the warmer temps, relative humidity values will drop to around 30 percent. An upper trough approaches the Dakotas by the end of the day Tuesday.
Deep South Texas and the Rio Grande Valley, with zonal mid-level flow initially overhead, will then be increasingly dominated by a 500 mb ridge of high pressure that will build over the northwest coast of Mexico.
330 AM EDT Tue Apr 8 2025 (Today through Wednesday) - Near freezing temps expected across extreme north GA this morning. - Freezing temps expected across north and portions of west GA Wednesday morning. We are seeing a much drier airmass moving into the area from the north as high pressure builds southward from the Great Lake states. Increased NW flow is also setting up this morning bringing in much cooler temps. Some isolated locations across extreme north GA will see temps dipping down to near freezing this morning but the coldest temps this week will move in Tonight/Wed morning.
1050 PM MDT Mon Apr 7 2025 - Chance for showers and a few thunderstorms later Tuesday into Wednesday - Elevated fire weather latter half of the week Current upper air models show upper ridge over the lee side of the Rockies into the northern and central plains, and an upper trough digging into the PAC NW. Surface charts depict high pressure centered over eastern ND this afternoon. The higher elevation Black Hills could potentially see some light snow with little to no accumulations in the colder hours of the night, while everywhere else can expect just rain.
This return flow and the continued abundant sunshine will push afternoon highs into the 60s and 70s, a bit warmer than yesterday.
A relatively cold start to this morning will be short lived with southerly flow returning to the area today as high pressure shifts east over the Gulf.
At the surface, high pressure was centered over Texas, and over Minnesota, with a reinforcing frontal boundary near Interstate 40. Temperatures were generally in the 40s at 3 AM CDT, with the exception of the area just south of Lake Pontchartrain, where winds off the warmer waters of the lake were holding temperatures in the 50s. High temperatures generally in the lower and middle 70s, with lows tonight in the 40s to lower 50s.
110 AM CDT Tue Apr 8 2025 - Freezing temperatures early this morning area wide.
By tonight, lows will drop into the mid-30s north, to the low-40s south, with slightly below seasonable temperatures expected for the next 36 hours. In fact, a Frost Advisory is in effect for our northern counties, as a few locations are expected to drop below freezing tonight.
232 AM EDT Tue Apr 8 2025 A cold front will cross the area this morning, leading in much colder air. High pressure and dry weather follow for tonight and Wednesday.
Warming aftn temps are expected as Srly flow resumes over the region, w/ area readings climbing to the low to mid 70s.
1005 PM MST Mon Apr 7 2025 Updated Aviation Above normal temperatures will be prevalent throughout this week and into the weekend with high pressure aloft building over the region.
(Today and tonight) A weak cold front will stall and dissipate this morning as we see surface pressure falls in the lee of the Rockies. This will increase southerly winds over the area and bring warmer temperatures with it. Winds will be 15 to 20 mph with gusts 25 to 30 mph and high temperatures will be 5-10 degrees warmer than they were yesterday.
(Today through Wednesday night) Northerly flow aloft is progged to transition to the northwest as a mid to upper level ridge builds over the Desert Southwest into southern CA. A mid to upper level trough will dig into the Northern Great Plains and move into the Mississippi River Valley keeping the ridge to the west for a few days. This trough will also send a weak surface cold front into the area late tonight into tomorrow. Some areas may actually be warmer tomorrow despite the northerly winds.
(Today and tonight) Cooler today with the passage of the cold front with highs generally in the lower to middle 70s, which is slightly cooler than average.
1202 AM CDT Tue Apr 8 2025 - Freezing temps likely once again late tonight, prompting the headline to be upgraded to a Freeze Warning.
The highly amplified upper level ridge to the west of the CWA will continue to make slow progress east toward this region over the next 24 hours. Increasing cloud cover on Tuesday may hamper the low level WAA some.
- Small precipitation chances expected midweek, then drier and warmer weather expected for the end of the week. High pressure will track through the western Great Lakes region today, providing dry and cool conditions to the area. The high will slide off to the east tonight, with continued dry conditions but increasing clouds from west to east as a low pressure system develops across the Plains.
Otherwise high pressure sets up shop for the short term and keeps our area on the cool side through Wednesday. At this time feel confident enough to go ahead with the cooler temperatures based on impacts this time of the year.
Clear skies along with light southerly winds will lead to overnight lows in the 30s and a few areas may drop down to near freezing tonight. Tomorrow will be fairly similar to today, other than winds will be out of the south to southwest which will usher in warmer air in the lower levels. Winds should stay around 10 to 15 mph on Tuesday night which will aid in keeping overnight lows well above freezing going into Wednesday morning.
This return flow and the continued abundant sunshine will push afternoon highs into the 60s and 70s, a bit warmer than yesterday. /Issued 1210 PM CDT Mon Apr 7 2025/ /Wednesday Onward/ Warmer weather will return during the midweek period following a few days of southerly return flow and abundant insolation.
115 AM CDT Tue Apr 8 2025 Tonight through Tuesday: The upstream low level thermal trough will begin to weaken and become less defined, and this will result in decreasing cold advection and low cloud cover as we go through the near term.
High pressure will build in behind this front for the remainder of today. (Today through Wednesday) - Near freezing temps expected across extreme north GA this morning. - Freezing temps expected across north and portions of west GA Wednesday morning. We are seeing a much drier airmass moving into the area from the north as high pressure builds southward from the Great Lake states. Increased NW flow is also setting up this morning bringing in much cooler temps. Some isolated locations across extreme north GA will see temps dipping down to near freezing this morning but the coldest temps this week will move in Tonight/Wed morning.
542 AM CDT Tue Apr 8 2025 Updated at 539 AM CDT TUE APR 8 2025 - Freezing conditions are expected for the northern half of Central Alabama Wednesday morning, while all other locations will at least observe patchy or areas of frost as temperatures drop into the upper 20s in the far north to mid 30s in the south. Otherwise high pressure sets up shop for the short term and keeps our area on the cool side through Wednesday. At this time feel confident enough to go ahead with the cooler temperatures based on impacts this time of the year.
649 AM EDT Tue Apr 8 2025 (Today and tonight) Cooler today with the passage of the cold front with highs generally in the lower to middle 70s, which is slightly cooler than average.
This will send a cold front to the Oregon coast, where it will move inland and dissipate tonight.
945 AM EDT Tue Mon Apr 8 2025 Cold high pressure will bring the threat for freezing conditions tonight over much of Central NC. The high pressure will shift offshore Wednesday allowing for moderation in the temperatures.
(Today through Wednesday) - Near freezing temps expected across extreme north GA this morning. - Freezing temps expected across north and portions of west GA Wednesday morning. We are seeing a much drier airmass moving into the area from the north as high pressure builds southward from the Great Lake states. Increased NW flow is also setting up this morning bringing in much cooler temps. Some isolated locations across extreme north GA will see temps dipping down to near freezing this morning but the coldest temps this week will move in Tonight/Wed morning.
648 AM EDT Tue Apr 8 2025 A cold front will cross the area this morning, leading in much colder air. High pressure and dry weather follow for tonight and Wednesday.
630 AM EDT Tue Mon Apr 8 2025 Cold high pressure will bring threat for freezing conditions tonight over much of Central NC. The high pressure will shift offshore Wednesday allowing for moderation in the temperatures.
In terms of temperatures, cloud coverage will keep highs in the low to mid 70s with a few locations potentially reaching 80 degrees.
650 AM EDT Tue Apr 8 2025 Dry and cooler conditions return through midweek.
High pressure will continue across the region today as an upper ridge moves overhead, leading to continued warm and dry conditions for SE Colorado. Afternoon highs will be in the 60s over the high valleys, while the plains largely climb into the mid-high 70s, though a few places further east may hit the 80 degree mark. For tonight, still warm over the plains with lows in the high-30s to low-40s, while the valleys cool off a bit more into the 20s to low-30s.