Aikyam-Lab/Synoptic-Bench huggingface dataset:
446 AM CST Fri Feb 24 2023 Seasonably cool today but then trending warmer over the weekend.
Saturday ridging will continue to build across the Northern Rockies pushing the current Arctic airmass eastward.
Otherwise, after another very cold morning, temperatures will moderate somewhat this afternoon as warmer air continues to advect into the region. Temperatures will continue to warm on Saturday, with the majority of the area seeing highs around or above freezing. Gusty winds will remain in the same locations, though sunshine and warmer temperatures should help glaze over the top layer of snow and mitigate the blowing snow threat.
7 millibar pressure difference remains across western Montana between arctic high pressure (1032. The wind chills are generally in the teens and 20s below zero in the valleys and 30s to 40s below zero in the higher elevations. Temperatures tonight will fall into the single digits above and below zero across the region, except teens and 20s in the lower elevations of north-central Idaho.
338 AM CST Fri Feb 24 2023 Key Messages: - Freezing drizzle and/or a light wintry mix possible for several hours Friday night east of I-35 and south of Hwy 36, with best chances south of I-70.
Early this morning, high pressure nudged into the area from the northwest in the wake of yesterday's storm system. Temperatures under the high, in North Dakota are in the lower negative teens. Discussion: High pressure moves north of the area today as a wave approaches from west southwest later in the morning into the afternoon. High temperatures today look to be in mid to upper 20s north and the low 30s across the south. Dry air is expected to remain across the area until the high slides east and the flow moves to the SE advecting in more 'moist' air. The spectral models have some snowfall accum of 1 to 2 inches across the far north as the CAMS have less than half an inch of accum across the highway 20 corridor.
524 AM CST Fri Feb 24 2023 (Today) Cold start this morning with temperatures in the lower to mid 20s across northeast Oklahoma. Depending on how quickly precip develops, could see temperatures remain below freezing with the potential for light freezing drizzle or freezing rain across portions of west-central Oklahoma, spreading into northeast Oklahoma this afternoon.
255 AM MST Fri Feb 24 2023 Mean western NOAM upper trough will support semi-active flow through the period. WAA pattern will ensue as the main SW CONUS upper trough begins to shift east with SW flow developing locally. WAA will begin to influence NE WY and the BH's today, with highs expected in the 20s there, with some low 30s possible in the high elevations of then BH. Arctic air will really begin to scour our Sat as much of the FA will see high temps at least in the 30s, with some 40s expected along the ENE slopes of the BH's as the lee side trough deepens in response to the approaching upper trough, with even warmer temps Sun when 50s will be possible along the eastern BH's.
311 AM CST Fri Feb 24 2023 High pressure over the area this morning with a clear sky and light wind. Warmer on Saturday as rise into the double digits for highs with dry weather expected.
548 AM CST Fri Feb 24 2023 Cooler temperatures and rain showers are expected into this afternoon across the Mid-South with a few isolated thunderstorms possible over North Mississippi.
628 AM EST Fri Feb 24 2023 (Today through Saturday) High pressure over the Florida Peninsula will remain over the Florida Peninsula through this weekend.
Cooler temperatures and rain showers are expected into this afternoon across the Mid-South with a few isolated thunderstorms possible over North Mississippi.
256 AM MST Fri Feb 24 2023 MORNING DISCUSSION Synoptic Scale Conditions: A strong low pressure system is just off the Pacific Northwest coast, and Montana is currently within a southwesterly flow pattern at 500 mb.
531 AM EST Fri Feb 24 2023 Mainly dry weather and below average temperatures are expected today behind an exiting cold front. A trough of low pressure will return light wintry precipitation chances early Saturday before quickly exiting.
With the center of the 594mb ridge still directly overhead, the persistent pattern continues this morning with temperatures already reaching the upper 70s to low 80s. (Today through Saturday) High pressure over the Florida Peninsula will remain over the Florida Peninsula through this weekend.
High pressure over the area this morning with a clear sky and light wind. Warmer on Saturday as rise into the double digits for highs with dry weather expected.
358 AM CST Fri Feb 24 2023 Seasonably cool today but then trending warmer over the weekend.
The lowest radar angle is bearly picking up the echoes associated with snow showers from Mineral to Lake counties this morning. Expect VFR conditions most areas later Friday and also on Saturday with dry high pressure anticipated. 7 millibar pressure difference remains across western Montana between arctic high pressure (1032. The wind chills are generally in the teens and 20s below zero in the valleys and 30s to 40s below zero in the higher elevations. Temperatures tonight will fall into the single digits above and below zero across the region, except teens and 20s in the lower elevations of north-central Idaho.
539 AM CST Fri Feb 24 2023 (Today through Saturday Night) Quite the spread in sfc temperatures across the state this morning,even with the cold front southeast of the area.
508 AM CST Fri Feb 24 2023 (Today) A cold front is bisecting the forecast area this morning, likely draped from northeast to southwest across portions of Jackson, Marshall, and Cullman counties. By daybreak, the front will have cleared northeast Alabama and in its wake a drier and cooler airmass. Post-frontal dewpoints have already dropped into the low to mid 40s, a stark contrast to the last few days of 60s dewpoints. Temperatures this afternoon will also be nearly 20 degrees cooler than yesterday with highs topping out in the upper 50s to lower 60s, which is actually near climatological norms.
(Today through Saturday Night) Quite the spread in sfc temperatures across the state this morning,even with the cold front southeast of the area.
The next Pacific storm dropping south along the West Coast will, as it deepens, force a compensatory ridge to build over the Four Corners states. As this ridge builds, southwest flow aloft will promote warm air advection across the region, allowing daytime highs for Saturday to jump 8-12 degrees above the forecast highs for today. As the low's center moves over the Las Vegas area by 12Z/Sat moisture will begin to reach the Four Corners region resulting in a chance for showers over portions of southeast Utah with a slight chance for very light shower activity over the southern mountains. The low center then moves over the Four Corners region on Saturday, before pushing over northeast New Mexico late in the day.
A frontal boundary to our north that is bringing cold temperatures to northern Texas may sag south into our area bringing with it some slightly cooler temperatures and increased cloudcover. This boundary, along with excess cloud cover will keep temperatures cooler for Friday and Saturday. With this said, temperatures will still remain above normal across the region with highs generally in the low to mid 80s.
941 AM EST Fri Feb 24 2023 High pressure will build east into the Great Lakes and Ohio Valley today. This high will move east tonight, allowing an area of weak low pressure to pass quickly across the Ohio Valley into the first part of Saturday.
Areas near the coast should be in the lower 80s. High pressure remains in place through the weekend producing warm and rain-free conditions. High pressure is expected to dominate weather conditions over the area keeping rain-free conditions through the weekend.
657 AM EST Fri Feb 24 2023 High pressure will build east into the Great Lakes and Ohio Valley today. This high will move east tonight, allowing an area of weak low pressure to pass quickly across the Ohio Valley into the first part of Saturday.
643 AM EST Fri Feb 24 2023 A front will push through the region today bringing cooler and rainy conditions that will last through Saturday.
544 AM CST Fri Feb 24 2023 High pressure over the area this morning with a clear sky and light wind. Warmer on Saturday as rise into the double digits for highs with dry weather expected.
Snow over the area will taper off by this afternoon as the associated trough lifts northward, putting Utah and southwest Wyoming under weak high pressure through Saturday.
(Today) Cold start this morning with temperatures in the lower to mid 20s across northeast Oklahoma. Depending on how quickly precip develops, could see temperatures remain below freezing with the potential for light freezing drizzle or freezing rain across portions of west-central Oklahoma, spreading into northeast Oklahoma this afternoon.
Shortly after midnight, temperatures across central Wisconsin were near-zero, and the Fox Valley region was in the low to middle teens. With wind chill values this low, frostbite can occur to exposed skin within 30 to 45 minutes.
310 AM CST Fri Feb 24 2023 High pressure moving overhead this morning weakens and retreats east today.
523 AM CST Fri Feb 24 2023 Key Messages: - Freezing drizzle and/or a light wintry mix possible for several hours Friday night east of I-35 and south of Hwy 36, with best chances south of I-70.
412 AM MST Fri Feb 24 2023 Mean western NOAM upper trough will support semi-active flow through the period. WAA pattern will ensue as the main SW CONUS upper trough begins to shift east with SW flow developing locally. WAA will begin to influence NE WY and the BH's today, with highs expected in the 20s there, with some low 30s possible in the high elevations of then BH. Arctic air will really begin to scour our Sat as much of the FA will see high temps at least in the 30s, with some 40s expected along the ENE slopes of the BH's as the lee side trough deepens in response to the approaching upper trough, with even warmer temps Sun when 50s will be possible along the eastern BH's.
Temperatures near the center of that strong arctic area of high pressure are in the single digits to -20 degrees below zero Fahrenheit. Closer to home, the extreme southern edge of this area of high pressure continues to slowly push the front extending from southern Louisiana through central/southern Alabama further southeast. Further south though highs could still climb a tad into the lower 60s.
A weak upper ridge will develop across the region today as an upper low moves southward off the west coast.
Areas along and northwest of Interstate 44 could experience patchy freezing drizzle.
High pressure moving overhead this morning weakens and retreats east today.
(Tonight through Saturday night) A weak spoke of energy rounding the subtropical ridge and abundant low level moisture has helped maintain some cloud cover across the lower Texas coast, limiting high temperatures across eastern Cameron County. The frontal boundary across the CRP CWA has yet to sneak into the northern ranchlands, but may dip south tonight into early Saturday before nudging north through the weekend as a warm front. Went with a mix of NAM and cooler blends up north with NBM and slightly warmer blends for the RGV through the short term. Patchy fog is being observed along the lower Texas coast, and with cooler water temps and persistent moist southerly winds, this may not budge much over the weekend.
Lots of big difference on temps across the region, but surface winds everywhere are northeasterly from high pressure edging into the midWest U. Otherwise, aloft we are still running deep southwesterly flow with the next big trough digging into the desert SW U.
Temperatures are still on track to be in the upper 80s west of I-95, with the sea breeze providing some relief along the coast, with highs reaching the low 80s. Favorable boating conditions thanks to high pressure centered over the local Atlantic waters.
1144 AM CST Fri Feb 24 2023 Seasonably cool today but then trending warmer over the weekend.
Some of the heavier convective cores could still produce a little sleet at times, though surface temps will remain well above freezing, so no impacts are expected. Temperatures will likely remain near or below freezing through this afternoon to the northwest of Tulsa, and therefore some areas of freezing rain/drizzle will be possible in these areas later this afternoon.
112 PM CST Fri Feb 24 2023 Moisture continues to stream north over the cold front to the south. A warm front will lift north on Sun as flow aloft transitions to the SW over the region.
(This afternoon through Saturday Night) Stepping outside today you'd never believe we're just 24 hours removed from the warmest February day in Nashville's history, but yesterday's fropa has brought significantly cooler temperatures to Middle Tennessee.
With the center of the 594mb ridge still directly overhead, the persistent pattern continues today. Along the immediate east coast, the light onshore flow will act to moderate temperatures a tad keeping locations along the immediate coastline in the lower to mid 80s.
/22 (Now through Saturday) A strong upper level ridge will continue over the Gulf of Mexico through Saturday. At the surface, high pressure off the east coast of Florida will gradually weaken, but shift west into the eastern Gulf as well, while a weak frontal boundary decays over the interior portions of the southeast CONUS. Other than the fog and low clouds, it will still be rather warm and muggy for this time of the year as the upper ridge continues to dominate across the region. Highs will continue to rise into the lower 80s, even with fog and areawide cloud cover, both today and Saturday for many locations. Lows tonight will also remain well above average, mainly in the low to mid 60s.
Current upper air analysis depicts trough moving onto the West Coast with west-southwest flow over the northern plains. Most of western SD sits under a blanket of high clouds with the mercury slowly rising as the arctic high moves eastward and southerly flow at the sfc advects relatively warmer air into the CWA. Another chilly night on tap with low temperatures in ranging from zero to around 5 below over much of the western SD plains and slightly warmer - around 0 to 15 in southwestern SD, the Black Hills, and northeastern WY.
Issued by National Weather Service Little Rock AR 1129 AM CST Fri Feb 24 2023 Cooler temperatures and rain showers are expected into this afternoon across the Mid-South with a few isolated thunderstorms possible over North Mississippi.
1119 AM CST Fri Feb 24 2023 (Today through Saturday Night) Quite the spread in sfc temperatures across the state this morning,even with the cold front southeast of the area.
Upper-level ridging remains in place dominating the weather pattern through the weekend. At the surface, broad high pressure will continue to result in unseasonably warm and a deep dry airmass across our area.
1254 PM EST Fri Feb 24 2023 High pressure will build east into the Great Lakes and Ohio Valley today. This high will move east tonight, allowing an area of weak low pressure to pass quickly across the Ohio Valley into the first part of Saturday.
Tonight and Saturday An upper low off the northern California coast continues to spin shifting south towards SoCal over the next day or so. As this does, we'll see very weak ridging over eastern Idaho later tonight and into the day on Saturday. Temps by the afternoon will likely climb into the low to mid 40s across the lower Snake Plain and into the Magic Valley but the Upper Snake and Arco Desert will remain on the cooler side of normal.
In addition to this, the high pressure system situated over south Florida should allow for warm/moist return flow to spread mainly along and south of the I-20 corridor. Areas south of I-20 could see highs in the low 80s.
1140 AM CST Fri Feb 24 2023 Key Messages: - Freezing drizzle and/or a light wintry mix possible for several hours Friday night east of I-35 and south of Hwy 36, with best chances south of I-70.
While the specific moisture content of the lower atmosphere is obviously quite low within the Arctic air mass, saturation with respect to ice appears to be achievable. Saturday ridging will continue to build across the Northern Rockies pushing the current Arctic airmass eastward.
The culprit deep layer ridge centered somewhere over the southeast coast of Florida was observed to have a height of 597 dm at 500 mb, another decameter higher than the record set with yesterday evening's sounding. From synopsis, high pressure in the vicinity of the Bahamas will continue to yield moderate to fresh breezes through Saturday.
1016 AM MST Fri Feb 24 2023 Mean western NOAM upper trough will support semi-active flow through the period. WAA pattern will ensue as the main SW CONUS upper trough begins to shift east with SW flow developing locally. WAA will begin to influence NE WY and the BH's today, with highs expected in the 20s there, with some low 30s possible in the high elevations of then BH. Arctic air will really begin to scour our Sat as much of the FA will see high temps at least in the 30s, with some 40s expected along the ENE slopes of the BH's as the lee side trough deepens in response to the approaching upper trough, with even warmer temps Sun when 50s will be possible along the eastern BH's.
1043 AM CST Fri Feb 24 2023 Seasonably cool today but then trending warmer over the weekend.
Above average temperatures will likely prevail through the end of February under a strong upper-level ridge across the East Coast. However, temperatures are still considered below the climatological average under northwest flow, as a upper-level trough exits east. Wind gusts will likely subside throughout the evening as the pressure gradient relaxes and subsidence increases in the boundary layer with a building ridge. Rain chances will likely stay focused west of the ridges with winds shift from the southwest. However, Hi-Res model soundings for the eastern ridges of West Virginia display a wintry mix/snow situation as the boundary layer saturates and cools aloft. Due to the lack of confidence in wind direction prevailing from the east to lock in upsloping/precip type, will hold off on issuing a Winter Weather Advisory for freezing rain.
Cooler than average high temperatures are forecast through the end of the week, with periods of showers and chances for isolated thunderstorms through Saturday afternoon.
Deep layer ridging planted over mainland south Florida has lazily drifted west while sustaining a very stable and dry atmospheric profile. By tomorrow, this high will nose across south Florida thus weakening our gradient and slackening our winds.
The front will begin to lift northward starting as early as overnight tonight as the ridge to our southeast begins to amplify. Temperatures will be warmer as the front moves northward across Central Alabama, ranging from the mid 60s across the far north to the lower 80s in the far southeast.
Expect mostly cloudy skies tonight with a good gradient in the lows due to the location of the front. Look for lows in the upper 40s to low 50s over the Brazos Valley and Piney Woods area and the low to mid 60s elsewhere. A few sprinkles could occur along/near the boundary as well, but chances of this is very low, given that mid to upper level ridging will prevail across the region.
(Through Saturday) Near record temperatures will continue as a strong upper level ridge continues to dominate the region. A dense fog advisory has been issued for the Florida panhandle and big bend where the highest confidence of dense fog exists. Overnight lows are expected to be mainly in the low to mid 60s. After the morning fog lifts, Saturday will feature another opportunity to break some record highs with highs reaching the low to mid 80s away from the coast with dry weather expected to continue.
Extended the High Risk of rip currents based on current/expected swell heights/periods.
High pressure passing by tomorrow should allow skies to clear tomorrow afternoon. High temps should rebound to near freezing owing to WAA on some modest southwesterly sfc winds that may become breezier later in the day.
315 PM CST Fri Feb 24 2023 Overview: Freezing drizzle possible this afternoon, ending by the late evening.
Strong and stacked ridging over the region continues to produce record warmth for much of the area. Upper-level ridging remains in place dominating the weather pattern through the weekend. At the surface, broad high pressure will continue to result in unseasonably warm and a deep dry airmass across our area.
554 PM CST Fri Feb 24 2023 Overview: Freezing drizzle possible this afternoon, ending by the late evening.
Above average temperatures will likely prevail through the end of February under a strong upper-level ridge across the East Coast. Rain chances will likely stay focused west of the ridges with winds shift from the southwest. However, Hi-Res model soundings for the eastern ridges of West Virginia display a wintry mix/snow situation as the boundary layer saturates and cools aloft. Due to the lack of confidence in wind direction prevailing from the east to lock in upsloping/precip type, will hold off on issuing a Winter Weather Advisory for freezing rain.
Most of the foothills and Palmer Divide have crawled their way into the 30s, with a few sites lucky enough to see the low 40s. Meanwhile, snow showers are still continuing across the high country this afternoon, though this has diminished over the past couple hours. While temperatures should definitely be warmer than today. Across the high country, breezy conditions will continue Saturday, though it shouldn't be as windy as today.
For now will only fiddle just a bit with the lows as confidence is rather low.
High pressure remains in firm control of the weather pattern tonight bringing a mainly clear sky with winds becoming light and variable as the evening progresses. The latest hi res ensemble guidance shows the highest probabilities of dense fog development spreading west of Lake Okeechobee and over to the Gulf Coast. Low temperatures tonight will generally range from the lower 60s across the Lake Okeechobee region to around 70 across the east coast metro areas. With the center of the 594mb ridge still directly overhead, the persistent pattern continues today. Along the immediate east coast, the light onshore flow will act to moderate temperatures a tad keeping locations along the immediate coastline in the lower to mid 80s.
619 PM CST Fri Feb 24 2023 (This afternoon through Saturday Night) Stepping outside today you'd never believe we're just 24 hours removed from the warmest February day in Nashville's history, but yesterday's fropa has brought significantly cooler temperatures to Middle Tennessee.
Issued by National Weather Service Little Rock AR 546 PM CST Fri Feb 24 2023 Cooler than average high temperatures are forecast through the end of the week, with periods of showers and chances for isolated thunderstorms through Saturday afternoon.
(The rest of tonight) The biggest forecast challenge for the rest of the night is the coverage of drizzle/freezing drizzle to the north of the expected more potent showers later tonight across southeast Oklahoma and west central Arkansas. However, dew point depressions remain high across a good portion of northeast Oklahoma and into far northwest Arkansas, and model low level relative humidity fields indicate little in the way of further moistening in the lowest levels. Add to that a weakening in the warm advection across this same area, and it is likely that the drizzle/freezing drizzle threat will end from northwest to southeast through the rest of the evening and into early tomorrow morning.