Aikyam-Lab/Synoptic-Bench huggingface dataset:
944 PM CDT Wed Apr 26 2017 The upper level trough of low pressure axis has shifted East of the Four State Region and the associated surface cold front has moved out of the forecast area. Have dropped the lake wind advisory due to the pressure gradient relaxing in wake of the cold front. High pressure building into the region will make for a cool night over the Four State Region. Ridging aloft and on the surface will quickly spread over the forecast area as a progressive pattern will return rain chances for the late half of the weekend into the weekend.
/issued 944 PM CDT Wed Apr 26 2017/ The upper level trough of low pressure axis has shifted East of the Four State Region and the associated surface cold front has moved out of the forecast area. Have dropped the lake wind advisory due to the pressure gradient relaxing in wake of the cold front. High pressure building into the region will make for a cool night over the Four State Region. Ridging aloft and on the surface will quickly spread over the forecast area as a progressive pattern will return rain chances for the late half of the weekend into the weekend.
623 PM CDT Wed Apr 26 2017 A wet night is on tap across central and southeast Illinois as periods of showers and thunderstorms accompany a slow moving cold front and upper-level energy tracking along the boundary. Aside from a low risk of showers in the morning, Thursday should end up a mostly dry day as weak high pressure builds across the area. Temperatures will be noticeably cooler in many areas than today, with peak readings mainly around 60 degrees. The next stronger piece of upper-level energy will amplify the broad/shallow troffing across the lower 48 states to start the period.
High pressure ridge setting up from the Gulf of Mexico across central Florida and well seaward over the Atlantic will dominate through the weekend. The gradient flow looks southeast over the weekend as the axis of the ridge shifts slightly north and speeds will probably be closer to 15 knots and occasionally 15-20 knots.
727 PM EDT Wed Apr 26 2017 High pressure will build across the southeastern United States resulting in a considerable boost to the temperature with above seasonal warmth expected by the weekend. With low pressure off the middle Atlantic coast pulling away and some ridging aloft, expect quiet weather to prevail through tonight. For Thursday, despite most energy guidance is becoming a bit more enthusiastic and faster with the cold front approaching from the west tomorrow. Unseasonably warm, summerlike weather expected with the potential for showers and thunderstorms especially along and west of the Blue Ridge Mountains heading into the latter part of the week.
The upper trough is in the process of lifting northward and additional upward motion from this feature will gradually decrease. Some of the mesoscale models are handling this pretty well as it only breaks when the pre-frontal trough arrives. It is likely that the dew points only reach the lower 60s or so. But winds will become gusty as a pre-frontal trough approaches. Just ahead of the pre-frontal trough, ceilings dip into MVFR followed by IFR. 75 An approaching cold front will bring a round of showers and thunderstorms late tonight into Thursday morning.
A prevailing low level southerly flow expected once again with high pressure centered well east of the region. A cold front was located over the MS valley pushing gradually eastward. Smoke from ongoing wildfire will be pushing northward tonight as the low level flow prevailing from the south. A pseudo warm front is noted in guidance with a surge of moisture coming up from the south-southwest and isentropic upglide producing some increase in low to mid clouds mainly over the wrn zones.
Tomorrow afternoon, it looks to remain cooler and more stable, so the chance of thunder is lower compared to the past few days.
1148 PM CDT Wed Apr 26 2017 A narrow and broken line of showers and isolated thunderstorms just ahead or along a cold front will push across the forecast area overnight and into early Thursday morning.
Chattanooga Airport, TN 64 76 55 85 / 50 70 10 10 Knoxville McGhee Tyson Airport, TN 62 76 55 85 / 20 50 10 10 Oak Ridge, TN 63 77 54 85 / 30 50 10 10 Tri Cities Airport, TN 54 77 53 85 / 0 40 20 10.
842 PM CDT Wed Apr 26 2017 Strongest convection continues to push across far southern Illinois this evening closer to the better instability and shear with showers and scattered thunderstorms continuing in our area just ahead of the slow moving cold front. A wet night is on tap across central and southeast Illinois as periods of showers and thunderstorms accompany a slow moving cold front and upper-level energy tracking along the boundary. Aside from a low risk of showers in the morning, Thursday should end up a mostly dry day as weak high pressure builds across the area. Temperatures will be noticeably cooler in many areas than today, with peak readings mainly around 60 degrees. The next stronger piece of upper-level energy will amplify the broad/shallow troffing across the lower 48 states to start the period.
840 PM EDT Wed Apr 26 2017 A cold front will approach the region tonight and move across the area on Thursday. High pressure will briefly build in behind the front. Showers and isolated thunderstorms will begin to move into the region towards the end of the near term as a cold front approaches. Although low clouds will be left behind the precipitation, it does appear that some instability will develop as cooler temperatures aloft associated with a short wave trough spreads across the region. This may be sufficient for new development of showers and thunderstorms as a cold front crosses the area. High pressure will build in Thursday night allowing for skies to clear.
/issued 230 PM CDT Wed Apr 26 2017/ There is an upper trough centered over the central part of the country. A cold front is pushing south into the area allowing for a brief relief from the 90 degree temperatures. An extension of the previous upper trough will pass over the area on Thursday allowing for higher winds aloft to mix down to the surface.
715 PM EDT Wed Apr 26 2017 Expect increasing clouds and the chance for showers and even a few thunderstorms as a cold front moves through the forecast area tonight into Thursday.
929 AM EDT Thu Sep 7 2017 Low pressure will ride north along the stalled frontal boundary this morning. This low moves into New Brunswick this afternoon, moving the front south. An upper level trough of low pressure moves across the region this weekend.
High pressure will remain in place over North Central and Southwest Montana through Thursday, which will lead to warming temperatures, mostly sunny skies, and continued very dry conditions.
Otherwise, it will be fairly quiet through the weekend as high pressure eventually builds into the area. A trough will be pushing south across Wisconsin today into tonight. Late tonight, there is potential for some MVFR clouds to develop in the wake of trough. An associated 850 mb trough/cold front will drift south across the area tonight. A weak thermal ridge just ahead of it will bring a period of warm air advection and frontogenesis.
- Moldan High pressure will remain in place over North Central and Southwest Montana through Thursday, which will lead to warming temperatures, mostly sunny skies, and continued very dry conditions.
Confidence continues to increase concerning the likelihood of An impressive early season mid/upper level trough blankets nearly the entire eastern CONUS, with its associated surface front pushing slowly over the area this morning (currently stretching from Cape Canaveral to about Kissimmee). Light winds will become NE and gradually freshen to 10-15KT as a surface cool front sags into the central Florida waters and gets bridged by onshore flow associated with high pressure to the north. While we might normally be looking at a Small Craft Advisory for Seas by tonight, given the high bias of the wave models coupled with the likelihood of the eventual issuance(s) of tropical cyclone watches for at least part of the local waters by tonight, it is prudent to hold off on that, and simply mention large swells out ahead of the approach of dangerous major Hurricane Irma.
Issued by National Weather Service CORPUS CHRISTI TX 936 AM CDT Thu Sep 7 2017 With high pressure dominating the region, mostly sunny skies with highs in the mid 80s across the north and eastern areas to lower 90s across the western areas can be expected this afternoon. A high amplitude mid to upper level ridge will maintain an axis from the Nrn Rockies to the TX coast and keep Hurricane Katia pinned over the Srn Gulf. The temporary drying will probably lead to the lowest min temps of the week for areas along and east of the I-35 corridor tonight.
515 AM MDT Thu Sep 7 2017 Latest upper air analysis shows the ridge continuing to be pushed southward. Tonight a weak upper level short wave trough will move over the forecast area from the west. Friday night an upper level short wave trough will develop northwest of the forecast area. Models have shifted the short wave trough and nose of the low level jet to the west compared to last night.
1226 PM EDT Thu Sep 7 2017 Additional disturbances will rotate about the base of the highly amplified upper level trough today, keeping afternoon and early evening shower chances in the forecast. Drier and warmer conditions will return this weekend as high pressure settles into the Great Lakes region. Precipitation will gradually diminish later today into tonight as an upper trough moves out of the region. With this, low temperatures may stay a bit warmer than in previous couple of nights, although will still be below normal for early September. H5 trof will be pulling out to the northeast up the St.
Winds will increase slightly through the day under the influence of high pressure. Chattanooga Airport, TN 77 55 77 57 / 0 0 0 0 Knoxville McGhee Tyson Airport, TN 73 53 75 54 / 0 0 0 0 Oak Ridge, TN 74 52 75 54 / 0 0 0 0 Tri Cities Airport, TN 72 48 72 50 / 0 0 0 0.
/issued 310 AM CDT Thu Sep 7 2017/ Upper ridge extends from TX to ID as an upper trough presses it from the west.
945 AM EDT Thu Sep 7 2017 High pressure will gradually build across the region in the wake of the a cold front today providing for drying conditions.
1147 AM EDT Thu Sep 7 2017 High pressure will gradually build across the region today with drier air behind a departing cold front.
Dry air, especially at mid-levels, continues to funnel into our area as the cold front moves south and east across the northeastern Gulf and FL Peninsula. Due to northerly flow and persistent high clouds, temperatures will remain below average today with highs in the lower-mid 80s.
All is on track with forecast as high pressure and a dry airmass remain in control of ArkLaMiss weather. /EC/ Prior discussion below: Today through Tonight: Prior to dawn an anomalous high pressure airmass was bringing in some cooler readings in the lower to upper 50s. The strong fall like amplified trough will begin lifting to the east. The anomalous airmass will continue to bring a milder day and a cooler night to the region. Under north winds highs will be in the upper 70s to the lower 80s. Lows for tonight will range from the lower to middle 50s with some good radiational cooling.
The thicker clouds remain east of the low, mainly across northwest Minnesota. The low will drop southward through the day, bringing northwest winds to the area. Plenty of clear skies and sun as as return flow sets up out of Great Lakes high pressure system.
619 AM CDT Thu Sep 7 2017 Large scale pattern remains pretty much the same as it has been the last several days consisting of a highly anomalous ridge stretching northward from the western CONUS well into western Canada. deep longwave trof prevails over the eastern CONUS. broad high pressure was in control over the Central Plains. Models are in quite good agreement depicting the large-scale pattern altering from highly amplified to a high pressure dome enveloping the majority of the CONUS with the westerlies generally riding along the U.
High pressure continues to build southward across the region early this morning, with mostly clear skies and unseasonably cool temperatures. The northerly surface flow, combined with northwest flow aloft, will continue the influx of cooler and drier air, so highs are expected to top out in the upper 70s, despite plentiful sunshine. The axis of a strong upper trough will lift northeast of the region by Friday, though weak northwest flow will persist across the local area.
/issued 626 AM CDT Thu Sep 7 2017/ VFR conditions will continue to prevail throughout the 12Z TAF pd, as high pressure at the sfc remains in control of our wx. /issued 356 AM CDT Thu Sep 7 2017/ Water vapor imagery shows a long wave trough over the eastern half of the United States this morning, with the ArkLaTex under the influences of northwesterly flow aloft on the back side of this trough. The trough over the eastern half of the US will gradually lift to the northeast Friday and into the weekend. As a result, high pressure will begin to expand back into the region, but not really take hold until the middle of the work week. It should be noted that the ridge should keep Hurricane Katia well to our south, moving her into Mexico.
925 AM EDT Thu Sep 7 2017 Aloft - A trough reaches from Canada south to the Gulf coast while weak ridging extends across FL and the east Gulf from the Atlantic. Surface - A front is draped across far northern Fl with an Atlantic ridge reaching over FL. gov For the update today - The ridging aloft and surface will be in control with a moist.
1220 PM EDT Thu Sep 7 2017 Cool weather and shower chances can be expected until high pressure builds this weekend. Upper-level trough axis swings over us later today, expanding downlake clouds and showers. This is in response to multiple ripples passing through the mean resident trough with cold mid-level temperatures holding. Lows tonight will again be cooler than average, but with increased clouds expected, may be a few degrees warmer than this morning's readings. Weak disturbance will cross through the broad upper-trough before it departs the area Friday evening. High pressure will then build in for the weekend, leaving dry weather with a stunted temperature moderation. MVFR stratocu will persist through the day under upper troughing. Brief restrictions are possible through Fri under an upper trough.
/ISSUED Issued by National Weather Service CORPUS CHRISTI TX/ With high pressure dominating the region, mostly sunny skies with highs in the mid 80s across the north and eastern areas to lower 90s across the western areas can be expected this afternoon. A high amplitude mid to upper level ridge will maintain an axis from the Nrn Rockies to the TX coast and keep Hurricane Katia pinned over the Srn Gulf. The temporary drying will probably lead to the lowest min temps of the week for areas along and east of the I-35 corridor tonight.
1136 AM CDT Thu Sep 7 2017 Large scale pattern remains pretty much the same as it has been the last several days consisting of a highly anomalous ridge stretching northward from the western CONUS well into western Canada. deep longwave trof prevails over the eastern CONUS. broad high pressure was in control over the Central Plains. Models are in quite good agreement depicting the large-scale pattern altering from highly amplified to a high pressure dome enveloping the majority of the CONUS with the westerlies generally riding along the U.
1156 AM CDT Thu Sep 7 2017 Low pressure and an associated cold front will drop south through the area today. Highs will be in the mid to upper 70s over North Dakota with cooler highs in the 60s over Minnesota where there will be more cloud cover. Winds from the northwest will shift to the north and then to the northeast throughout the day as the low drops south, and there is a chance for some breezy conditions after the cold front moves through. Plenty of clear skies and sun as as return flow sets up out of Great Lakes high pressure system.
PREVOUS SHORT TERM DISCUSSION: A large ridge resides will remain over the western half of the CONUS and Canada the next few days with a large trough over the eastern halves. The ridge will continue to build into Montana today and Friday which will bring warmer and drier air into the region.
626 AM CDT Thu Sep 7 2017 VFR conditions will continue to prevail throughout the 12Z TAF pd, as high pressure at the sfc remains in control of our wx. /issued 356 AM CDT Thu Sep 7 2017/ Water vapor imagery shows a long wave trough over the eastern half of the United States this morning, with the ArkLaTex under the influences of northwesterly flow aloft on the back side of this trough. The trough over the eastern half of the US will gradually lift to the northeast Friday and into the weekend. As a result, high pressure will begin to expand back into the region, but not really take hold until the middle of the work week. It should be noted that the ridge should keep Hurricane Katia well to our south, moving her into Mexico.
1046 AM MDT Thu Sep 7 2017 A stretching deformation axis between two anticyclonic circulation centers within a ridge of high pressure, one over Idaho and the other over New Mexico, has allowed for increasing cloud cover and some light showers to continue through the early morning hours across southeast Utah and southwest Colorado. The trough of low pressure will move onto the west coast by Friday with the ridge of high pressure shifting eastward, allowing for a more direct southerly tap of moisture. The start of the weekend will see the upper level ridge axis move slightly to the southeast as a Pacific trough amplifies off the west coast.
/26/ Today through Tonight: Prior to dawn an anomalous high pressure airmass was bringing in some cooler readings in the lower to upper 50s. The strong fall like amplified trough will begin lifting to the east. The anomalous airmass will continue to bring a milder day and a cooler night to the region. Under north winds highs will be in the upper 70s to the lower 80s. Lows for tonight will range from the lower to middle 50s with some good radiational cooling.
1103 AM EDT Thu Sep 7 2017 High pressure with dry and cool weather for the remainder of the week. Feeling a lot like Autumn across the region as cool high pressure continues to build overhead. Although high pressure is at the surface we still will have an upper trough swinging through, and like yesterday an isolated diurnal shower or two will be possible. Lows at night will be around 50 degrees lowlands ranging to the lower 40s northeast mountains.
/Issued 239 AM PDT Thu Sep 7 2017/ Low pressure off the California coast will continue to bring substantial moisture to the region resulting in daily thunderstorm chances through the end of the week. With low pressure sitting off the coast over the next few days the chances for thunderstorms chances will continue each afternoon and evening. Friday will be a bit different as the negatively tilted trough edges further east with upper level diffluence with the jet positioned right over the Sierra and western Nevada. As we have seen in the past few days, the upper level low will be the main determining factor in the thunderstorm potential.
The low pressure system that has moved inland with the remnant moisture of former Tropical Storm Lidia is creating the unstable conditions for our thunderstorm activity today. This low will linger into the weekend and maintain a chance of thunderstorms. Enjoy the relative "coolness" of today with valley highs in the low to mid 80s and 60s to 70s in the mountains.
619 AM CDT Thu Sep 7 2017 A very amplified trough for this time of the year is present over the Great Lakes. This trough will continue to swing toward the Eastern seaboard today. High pressure will then build in from Ontario this evening into Friday with mostly clear skies. The benign weather regime will be a result of a broad high pressure in place at the surface. Temperature-wise, we do look to gradually moderate into the weekend as upper ridging builds in from the west behind the eastern CONUS trough.
608 AM CDT Thu Sep 7 2017 North northwest winds aloft will continue into today and tonight as sharp upper level ridging continues to expand across the central US. Weak low pressure drops south along the Minnesota and North Dakota border late tonight, with surface winds turning southeast to east overnight.
A cold front has moved just about through north central Florida. Some very patchy IFR/MVFR clouds lingering this morning, and as northeasterly winds increase this morning behind a cold front, additional SCT/BKN030-040 clouds are expected to develop. Onshore winds will increase today as a cold front pushes southeast across the waters this morning and pressure gradient tightens.
1240 PM EDT Thu Sep 7 2017 Low pressure will ride north along the stalled frontal boundary this morning. This low moves into New Brunswick this afternoon, moving the front south. An upper level trough of low pressure moves across the region this weekend.
/ISSUED 356 PM CDT Mon Oct 16 2017/ High pressure will bring an unseasonably cool airmass to Southeast Texas over the next couple of days.
936 PM EDT Mon Oct 16 2017 There's quite a range of temperatures across the area this evening with more urban locations in the lower 50s while some of the cooler mesonet sites have already dropped into the lower 40s. Current surface analysis reveals a broad 1032mb high pressure system in the Plains that extends well into the lower Ohio Valley. Temperatures tomorrow afternoon will be a few degrees warmer compared to today, as slightly warmer air advects in from the southwest around 850mb. Looks like the low levels of the atmosphere tomorrow will be capped and drier, so skies should be mostly sunny with only a few passing high clouds during the day. Expect another cool night tomorrow as temperatures drop into the lower 40s under good radiational cooling.
811 PM EDT Mon Oct 16 2017 Cold front has passed through the forecast area. High pressure will build in behind the cold front along with cooler and drier air for Tuesday through the end of the week. Cold front has pushed through the forecast area, and the colder and drier air is now moving into the cwa on strong northerly winds. Low temperatures tonight will be much cooler with mid 40s to around 50, but slightly warmer along lake shores.
823 PM EDT Mon Oct 16 2017 Cool Canadian high pressure builds into the region tonight and Tuesday, then remains over the area through the remainder of the week. Latest MSAS has the cold front well off the NC coast with high pressure building in from the west. Continued breezy Tuesday morning especially in the east as high pressure builds in form the west. Conditions become more calm by afternoon with the high directly over the region.
630 PM CDT Mon Oct 16 2017 As high pressure settles across the region, northeast winds to become 6 knots or less across area terminals overnight. Thus, cooler NAM guidance more in line with fcst.
942 PM EDT Mon Oct 16 2017 High pressure will result in gradually warming weather and dry conditions through the week. High pressure will maintain nearly clear skies and light wind Tuesday. High pressure will remain firmly entrenched over the area through the middle of the week, ensuring a dry forecast.
528 PM MDT Mon Oct 16 2017 High pressure remains to the south of the Four Corners this Monday afternoon. With the ridge of high pressure barely moving on Tuesday, a nearly identical forecast is expected.
/Issued 326 PM EDT Mon Oct 16 2017/ Frontal boundary sweeping south and east through the state ushering in a much drier and cooler airmass. As this cooler drier air filters into the area temps tonight expected to be mainly in the 40s with some 50s across central GA and some 30s in the the N GA mountains.
/issued 259 PM CDT Mon Oct 16 2017/ Subtle upper level ridge only producing clouds where it interacts with highest elevations in the Rockies evident on satellite imagery will shift east over the next 48 hours.