Aikyam-Lab/Synoptic-Bench huggingface dataset:
1233 PM EST Fri Feb 21 2020 Continued high pressure influence keeps skies clear through the 18Z TAF period. Mid-level warm advection is well underway with the departure of yesterday's thermal trough and will continue through the day, particularly as WSW flow aloft increases in response to deep low pressure pivoting across Hudson Bay. Uninhibited insolation will aid diurnal boundary layer growth allowing temperatures to climb into the low 30s by late afternoon as 850mb temps begin a slow ascent toward 0C by the end of the first period. Fairly static w/wsw mid- level flow regime will maintain steady transport of moderate air from the High Plains into Southeast Michigan.
245 PM EST Fri Feb 21 2020 A large high pressure system will provide for a dry weekend.
132 PM MST Fri Feb 21 2020 For the next couple of days high pressure will continue to dominate our local weather with precip chances non-existent and gradually moderating temperatures. High pressure ridge will begin to weaken late Saturday.
327 PM CST Fri Feb 21 2020 1036 MB Arctic High pressure over western Tennessee bringing cold and dry conditions to the region for the next 24 hours.
340 PM CST Fri Feb 21 2020 Mid-afternoon sfc analysis shows high pressure centered from the Ohio Valley through the Mid-South/Ozarks to the srn Plains resulting in a low-level nrly/nerly flow which has maintained our cool temperatures (sfc obs showing temps mostly in the lower 50s across the area) this afternoon. Water vapor imagery shows a nwrly flow in wake of the mid/upper-level trof axis now nearing the srn Atlantic coast, while ridging is noted extending from Mexico through the Plains states/Rockies. With flow at/near the sfc progged to shift to a srly direction by tomorrow afternoon, temps look a few degrees warmer than current while some cirrus spilling over the ridge looks likely.
Breezy winds are possible across the Twin Ports, northern WI, and Lake Superior this afternoon from the increased pressure gradient ahead of the trough.
726 PM EST Fri Feb 21 2020 Expansive high pressure centered over the Tennessee valley will offer fair dry weather for our region through through the weekend with notable day to day warming.
Surface analysis this afternoon places a ridge of high pressure stretching from the Ohio Valley back through the Lower Mississippi Valley and Southern Plains. Surface and upper level ridging will remain in place across the Mid-South tonight through Saturday night bringing a period of precipitation free weather. Excellent radiational cooling tonight with light to nearly calm winds, clear skies, and low dewpoints in the teens to lower 20s should result in temperatures falling back into the lower to middle 20s at many locations.
403 PM MST Fri Feb 21 2020 Current upper level analysis has broad ridge across the western CONUS with west to northwest flow aloft across the Northern High Plains. At the surface, high pressure resides across the Northern Rockies and Plains, with light west to southwest boundary layer flow present.
951 PM EST Fri Feb 21 2020 Low pressure offshore from the Carolina coasts this morning will further intensify as it accelerates away from the mainland this afternoon through Saturday. Cold and dry Canadian high pressure will build in and dominate this weekend.
Cloud cover will be minimal for the overnight period allowing low temperatures to dip into the low to upper teens tonight. Bumped up high temperatures as they will likely be a few degrees warmer than today. Cooler air will return to the region by mid-week.
510 PM CST Fri Feb 21 2020 Overnight lows tonight and highs on Saturday will be much warmer as Canadian high pressure exits southeast and heights climb as ridging temporarily occurs ahead of an upper low moving into the southwest U. leaving a weakness to interact with an inverted trough ahead of the upper low. Models are showing good continuity with tracking the upper low across the Southern Plains before the system starts to fill as it passes through Kansas into Missouri.
Additionally, upper-ridge to the west to maintain subsident flow aloft allowing for clear skies areawide. Under mostly cloudy skies, much warmer overnight low temperatures around 40 degrees expected on Saturday night.
509 PM EST Fri Feb 21 2020 A blustery start to the weekend as a large area of high pressure makes its way into the eastern half of the United States.
947 PM EST Fri Feb 21 2020 A large high pressure system will provide for a dry weekend.
832 PM EST Fri Feb 21 2020 High pressure will continue to build in from the west overnight. Expecting clear skies across the area tonight and Saturday as High pressure builds in from the NW and will dominate the weather pattern through the weekend.
630 PM EST Fri Feb 21 2020 A large high pressure system will provide for a dry weekend.
/issued 253 PM CST Fri Feb 21 2020/ (Tonight and Saturday) Dry and quiet weather will continue across West Central Texas through Saturday, with short wave ridging aloft dominating. Cloud cover will result in a bit warmer temperatures tonight, with overnight lows in mid and upper 30s. Temperatures will be considerably warmer tomorrow but still slightly below normal, with afternoon highs mainly in the lower 60s.
A gradual warm-up is expected thru the weekend as high pressure continues to move away from the area and onshore winds resume.
329 PM CST Fri Feb 21 2020 Overnight lows tonight and highs on Saturday will be much warmer as Canadian high pressure exits southeast and heights climb as ridging temporarily occurs ahead of an upper low moving into the southwest U. leaving a weakness to interact with an inverted trough ahead of the upper low. Models are showing good continuity with tracking the upper low across the Southern Plains before the system starts to fill as it passes through Kansas into Missouri.
546 PM CST Fri Feb 21 2020 Temperatures this afternoon have warmed into the low-30s with some mid-30s sprinkled in spots (mainly south and the Twin Cities metro). Friday night lows will cool into the low to mid teens. Both the EC/GFS support an upper low moving out of the desert southwest, east-northeast across the central part of the country.
Closed low (vcnty of 34N/125W) is near "bottoming-out" and will be moving into/across Socal on Sat. Temps this afternoon are trending warmer than Thu, and today is likely to be the warmest day of the week with max temps approaching the mid 70s over portions of the Valley, 50s and 60s in the mtns (some 6-12 deg above normal). Then temps will trend cooler through the weekend, but will still be a few degrees above normal (50s mtns and 60s Vly) by Sun. As this weekend's closed low moves into the mid section of the USA, a highly amplified ridge/trof pattern will develop over the Wrn half of the USA, and CA will be on the warm side of the wx pattern.
202 PM MST Fri Feb 21 2020 Current upper level analysis has broad ridge across the western CONUS with west to northwest flow aloft across the Northern High Plains. At the surface, high pressure resides across the Northern Rockies and Plains, with light west to southwest boundary layer flow present.
ESE winds early on Sat will veer S/SE mid to late day with 5-10KT and few gusts as high pressure moves away. The clouds continue to gather late Sat/Sun with an upper low bringing MVFR/IFR w/ shwrs/BR late in the wknd/early Mon. Additionally, upper-ridge to the west to maintain subsident flow aloft allowing for clear skies areawide. Under mostly cloudy skies, much warmer overnight low temperatures around 40 degrees expected on Saturday night.
Overnight lows in the low/mid 20s will be near normal to slightly below normal. Kanofsky The warming trend will continue on Saturday with highs expected to be around 10 degrees warmer than they were on Friday, mainly due to persistent southwesterly winds.
324 PM CST Fri Feb 21 2020 The rare dry period for the WFO PAH forecast area will continue through Saturday night, as the the westwardly tilted low amplitude ridge moves east of the area.
805 PM EST Fri Feb 21 2020 A much colder night is in store for the region behind yesterday's cold front, with freezing temperatures expected for parts of Levy county.
High pressure will anchor over the OH River and TN River Valleys tonight, and subsidence will lead to calming winds and clear skies. Expect low temps in the low 20s to perhaps even teens in a few locations. High pressure will slowly shift to the east on Saturday, and temperatures will warm gradually through the weekend as southerly flow returns to the area.
515 PM CST Fri Feb 21 2020 High pressure will dominate Illinois through the start of the weekend.
629 PM EST Fri Feb 21 2020 Dry and increasingly warmer conditions will be on tap into this weekend with highs in the 40s and lows in the 20s.
Winds will gradually become light and variable tonight, then shift to the southeast on Saturday as high pressure moves east. Low level moisture will return on Saturday as the next trough begins to take shape in the Lee of the Rockies. Thus skies will become Mostly Cloudy, however temperatures will moderate into the mid 60s as ridging develops aloft.
653 PM EST Fri Feb 21 2020 High pressure will maintain dry conditions, with moderating temperature through the weekend.
314 PM CST Fri Feb 21 2020 Weak upper ridging is currently situated over the southern Plains ahead of an upper low situated off of the southern CA coast. At the surface, ridge extends from the Ohio Valley into the Arklatex region. Confidence is still high in above normal temps Sat with highs topping out in the low to mid 50s. Strong upper low is expected to track over the Desert Southwest Sat night into Sun morning. However the bigger impact from this upper trough will be much colder temps for Wed into Thu. Unseasonably high rainfall amounts will be possible Sun and especially Sun night as a deep low pressure system allows rich moisture to stream north.
A low pressure system will move through southern Nevada Saturday bringing a mix of rain and higher elevation snow to central Nevada.
631 PM EST Fri Feb 21 2020 High pressure brings a very dry weekend.
This, combined with the increase in higher clouds will yield overnight lows quite a bit warmer compared to last night.
High pressure will continue to build over the southeast U. /issued 340 PM CST Fri Feb 21 2020/ Mid-afternoon sfc analysis shows high pressure centered from the Ohio Valley through the Mid-South/Ozarks to the srn Plains resulting in a low-level nrly/nerly flow which has maintained our cool temperatures (sfc obs showing temps mostly in the lower 50s across the area) this afternoon. Water vapor imagery shows a nwrly flow in wake of the mid/upper-level trof axis now nearing the srn Atlantic coast, while ridging is noted extending from Mexico through the Plains states/Rockies. With flow at/near the sfc progged to shift to a srly direction by tomorrow afternoon, temps look a few degrees warmer than current while some cirrus spilling over the ridge looks likely.
721 PM EST Fri Feb 21 2020 Expansive high pressure centered over the Tennessee valley will offer fair dry weather for our region through through the weekend with notable day to day warming.
749 PM MST Fri Feb 21 2020 Only change to tonights forecast is Sheridan's low temps were lowered to the low teens for the overnight hours.
Low level moisture will return on Saturday as the next trough begins to take shape in the Lee of the Rockies. Thus skies will become Mostly Cloudy, however temperatures will moderate into the mid 60s as ridging develops aloft.
601 PM EST Fri Feb 21 2020 Low pressure offshore from the Carolina coasts this morning will further intensify as it accelerates away from the mainland this afternoon through Saturday. Cold and dry Canadian high pressure will build in and dominate this weekend.
Weak upper ridging is currently situated over the southern Plains ahead of an upper low situated off of the southern CA coast. At the surface, ridge extends from the Ohio Valley into the Arklatex region. Confidence is still high in above normal temps Sat with highs topping out in the low to mid 50s. Strong upper low is expected to track over the Desert Southwest Sat night into Sun morning. However the bigger impact from this upper trough will be much colder temps for Wed into Thu. Unseasonably high rainfall amounts will be possible Sun and especially Sun night as a deep low pressure system allows rich moisture to stream north.
425 PM CST Fri Feb 21 2020 The rare dry period for the WFO PAH forecast area will continue through Saturday night, as the the westwardly tilted low amplitude ridge moves east of the area.
/issued 805 PM EST Fri Feb 21 2020/ A much colder night is in store for the region behind yesterday's cold front, with freezing temperatures expected for parts of Levy county.
400 AM EST Sat Feb 22 2020 Temperatures and dewpoints a solid 10 degrees warmer than 24 hours ago as southwest return flow continues around high pressure currently settling over the Southeast.
Weak upper ridging is currently situated over the southern Plains ahead of an upper low situated off of the southern CA coast. At the surface, ridge extends from the Ohio Valley into the Arklatex region. Confidence is still high in above normal temps Sat with highs topping out in the low to mid 50s. Strong upper low is expected to track over the Desert Southwest Sat night into Sun morning. However the bigger impact from this upper trough will be much colder temps for Wed into Thu.
134 AM MST Sat Feb 22 2020 A weak disturbance moving through eastern Montana this morning will pull a weak dry cold front through the area this afternoon, with another push of cooler air dropping into the area tonight.
1006 PM MST Fri Feb 21 2020 Current upper level analysis has broad ridge across the western CONUS with west to northwest flow aloft across the Northern High Plains. At the surface, high pressure resides across the Northern Rockies and Plains, with light west to southwest boundary layer flow present.
1037 PM EST Fri Feb 21 2020 Cloudy, windy and cooler weather prevails across the Florida Keys this evening, in the wake of a cold front that moved through the area during the day. A solid stratus field prevails over the cooler waters of Florida Bay and the Gulf of Mexico, with only some light sprinkles occurring in that area. Temperatures along the island chain have dropped steadily during the evening, and currently range from the lower 60s in the Upper Keys to the mid- upper 60s in the Lower Keys. Evening observations show strong N/NE winds of 20 to 25 knots across the Keys coastal waters, in the wake of a cold front that moved through the area earlier today.
Temperatures are warmer this evening as compared to yesterday. Combined with some cloud cover should result in warmer overnight lows.
1014 PM EST Fri Feb 21 2020 Expansive high pressure centered over the Tennessee valley will offer fair dry weather for our region through through the weekend with notable day to day warming.
240 AM CST Sat Feb 22 2020 Sprawling high pressure was centered over the lower Mississippi River Valley and Ohio River Valley this morning, with surface ridging extending from the western Gulf of Mexico all the way up to Cape Cod. Across the mid-Mississippi River Valley, we were locked in southwesterly flow behind the high with a dry air mass in place and no clouds (00z DVN sounding PWAT came in at only 0. Temperatures faired warmer than previous days, and values as of 2 AM ranged from 25 in Fairfield and Independence, to 32 in Muscatine. Discussion: No sensible weather impacts are expected in the short term period as we remain locked under southwesterly flow and just behind the high. Further north, highs will be colder in the low 40s due to influence from the 1-3" snowpack.
1214 AM EST Sat Feb 22 2020 Dry and increasingly warmer conditions will be on tap into this weekend with highs in the 40s and lows in the 20s.
Highs today should peak in the lower 60s for Elkhart to upper 50s elsewhere. This should keep temperatures from falling below freezing along and south of Highway 50. The northwest zones may still see below freezing lows as we head into the morning hours.
/Issued 832 PM EST Fri Feb 21 2020/ High pressure will continue to build in from the west overnight. Expecting clear skies across the area tonight and Saturday as High pressure builds in from the NW and will dominate the weather pattern through the weekend.
1216 AM EST Sat Feb 22 2020 High pressure will maintain dry conditions, with moderating temperature through the weekend.
It appears that lows will dip slightly cooler. The combination of clear skies and calm winds will allow temperatures to drop well below freezing tonight, with readings in the middle to upper 20s.
914 PM CST Fri Feb 21 2020 High pressure continues to build over the Tennessee Valley this evening. This feature is likely creating enough mixing in the boundary layer to keep these winds a bit higher and temperatures warmer. Some models are showing warmer low temperatures in the mid to upper 20s, possible due to this feature. Expect temperatures to drop into the lower 20s in most locations. High pressure will slowly shift to the east on Saturday, and temperatures will warm gradually through the weekend as southerly flow returns to the area.
Most of the cooler readings are in the Red River Valley. Cloud cover will be minimal for the overnight period allowing low temperatures to dip into the low to upper teens tonight. Bumped up high temperatures as they will likely be a few degrees warmer than today. Cooler air will return to the region by mid-week.
Otherwise, early morning GOES-East water vapor imagery/RAP 500mb analysis shows a broad ridge across the central CONUS with a weak mid-level trough moving through eastern MT. Partly cloudy skies expected tonight as that aforementioned mid- level wave and weak surface cold front work into the area.
220 AM EST Sat Feb 22 2020 High pressure will maintain dry weather through the weekend, with a warming trend in temperature.
High pressure continues to build over the Tennessee Valley this evening. This feature is likely creating enough mixing in the boundary layer to keep these winds a bit higher and temperatures warmer. Some models are showing warmer low temperatures in the mid to upper 20s, possible due to this feature. Expect temperatures to drop into the lower 20s in most locations. High pressure will slowly shift to the east on Saturday, and temperatures will warm gradually through the weekend as southerly flow returns to the area.
1057 PM CST Fri Feb 21 2020 Temperatures this afternoon have warmed into the low-30s with some mid-30s sprinkled in spots (mainly south and the Twin Cities metro). Friday night lows will cool into the low to mid teens. Both the EC/GFS support an upper low moving out of the desert southwest, east-northeast across the central part of the country.
1106 PM EST Fri Feb 21 2020 High pressure will maintain dry conditions, with moderating temperature through the weekend.
Expect mins to be somewhat warmer than previous night as a weak trough approaches the region. /issued 132 PM MST Fri Feb 21 2020/ For the next couple of days high pressure will continue to dominate our local weather with precip chances non-existent and gradually moderating temperatures. High pressure ridge will begin to weaken late Saturday.
The center of the high will begin to shift eastward today with temperatures responding and warming back into the 50s areawide.
1244 AM EST Sat Feb 22 2020 High pressure brings a very dry weekend.
High pressure across the area is resulting in a clear sky and calm to light winds. High pressure continues to settle over the region tonight bringing with it VFR conditions with clear skies and light winds. Diegan Chattanooga Airport, TN 25 56 32 55 43 / 0 0 0 10 70 Knoxville McGhee Tyson Airport, TN 22 53 29 55 41 / 0 0 0 0 70 Oak Ridge, TN 22 54 29 55 41 / 0 0 0 0 70 Tri Cities Airport, TN 18 51 27 54 37 / 0 0 0 0 50.
320 AM EST Sat Feb 22 2020 A broad area of high pressure centered over the Tennessee valley will bring fair dry weather to our region through the weekend with notable day to day warming.
1055 PM CST Fri Feb 21 2020 Overnight lows tonight and highs on Saturday will be much warmer as Canadian high pressure exits southeast and heights climb as ridging temporarily occurs ahead of an upper low moving into the southwest U. leaving a weakness to interact with an inverted trough ahead of the upper low. Models are showing good continuity with tracking the upper low across the Southern Plains before the system starts to fill as it passes through Kansas into Missouri.
This wave is reflected at the surface by a weak lee trough in place across western ND. Most locations will reach above freezing, and a few locations may hit the 40 degree mark within forested areas of northwest MN. Fog will be possible again for northwest MN late tonight ahead of an approaching cold front.
314 AM CST Sat Feb 22 2020 High pressure will slide in overhead today and provide pleasant conditions. Southerly winds will be light and with an abundance of sunshine, temps will reach the low/mid 50s. Overnight lows will be able to fall into the lower 30s before a disturbance brings an increase in cloud cover. Dry conditions will persist into the first half of Sunday, however as a warm front lifts northward, rain will return to the forecast.
Expect sunshine to be abundant yet again today, with temperatures running a few degrees warmer compared to yesterday. These winds will favor slightly warmer conditions where downsloping winds help enhance warming locally across the west and central, and then slightly cooler temperatures near/northeast of Lake Michigan.
After a chilly start this morning across the northern interior, temps warm nicely into the mid to upper 60s from Kissimmee to Melbourne northward, and into the low 70s from Vero Beach south. Minor to moderate beach erosion still possible, especially during the high tide cycle later this evening.
The warming will quickly shift east this morning as a weak trough shifts through the area. With southwest to westerly flow, kept winds/wind gusts a bit higher along the ridge. Will also have the potential of a few high clouds reducing radiative cooling slightly, though greatest coverage looks to be south of I-90 as area of low pressure passes south of the area. Cold front is expected to sweep through the area on Sunday morning leading to cooler conditions.
However, a bit cooler though over northeast NE where snow cover still exists with highs in the low 50s.
Now it appears that rain will not move into our forecast area until Sunday afternoon, and mainly into central and southeast MO as low-mid level warm air advection increases over this area combined with increasing upper level divergence ahead of the approaching upper level trough. With the slower onset of precipitation, highs on Sunday are also trending a little warmer, especially from the St Louis area north and east. Despite the increased cloud cover on Sunday the high temperatures may be similar to today.
For Saturday, expect a chilly start to the day, with early morning temperatures hovering at or slightly below the freezing mark. Despite this increase in clouds, temperatures will be slightly warmer than yesterday but will remain around 5 to 10 degrees below normal today with highs in the 50s across the area. Rain chances will increase early Sunday morning for areas generally north of I-30 as the upper low begins to move into the region. Sunday will see temperatures slightly warmer than on Saturday, but will once again remain below normal.
High pressure will continue to slide east today allowing for southerly flow to develop this afternoon. Warmer temperatures are on tap for tonight and Sunday as mid and high level clouds stream across the area with southerly flow bringing a little bit more moisture into the area.
High pressure will slide in overhead today and provide pleasant conditions. Southerly winds will be light and with an abundance of sunshine, temps will reach the low/mid 50s. Overnight lows will be able to fall into the lower 30s before a disturbance brings an increase in cloud cover. Dry conditions will persist into the first half of Sunday, however as a warm front lifts northward, rain will return to the forecast.