Aikyam-Lab/Synoptic-Bench huggingface dataset:
1248 AM EDT MON APR 18 2016 HIGH PRESSURE WILL PREVAIL OVER THE REGION EARLY THIS WEEK.
747 PM EDT SUN APR 17 2016 AVIATION HIGH PRESSURE WILL BRING WARM AND DRY CONDITIONS ON MONDAY. A COLD FRONT WILL MOVE THROUGH MONDAY NIGHT WITH A SLIGHT CHANCE OF SHOWERS.
955 PM EDT SUN APR 17 2016 RIDGING AT THE SURFACE AND ALOFT WILL LEAD TO MODERATING TEMPERATURES EARLY THIS WEEK.
NE WINDS 15-20 KNOTS INTO MONDAY MORNING WILL KEEP SEAS ELEVATED WITH SOME SLIGHT INCREASE IN THE LARGE SWELLS EXPECTED ASSOCIATED WITH THE LOW PRESSURE SYSTEM WELL OFF THE NC COAST.
806 PM EDT SUN APR 17 2016 HIGH PRESSURE WILL MAINTAIN DRY AND WARM WEATHER THROUGH MONDAY. WITH ONLY CLOUDS AND COOLER TEMPERATURE EXPECTED UPON PASSAGE. A WEAKNESS IN THE HIGH PRESSURE RIDGE OVERHEAD WILL TRANSIT THE AREA FROM NORTH TO SOUTH OVERNIGHT. FRIES THE STRONG RIDGE WILL REMAIN IN CONTROL MONDAY.
1131 PM CDT SUN APR 17 2016 A blocking pattern remains in place for most of tonight, ensuring another night of quiet wx conditions for most of the CWA. The upper ridge axis over the eastern CONUS is forecast to start breaking down late tonight, which will allow a cutoff low over the western CONUS to shift slightly eastward. Kanofsky An upper level blocking pattern over the eastern CONUS will continue to hold firm thru early Monday, keeping any influence at bay from a wrapped up and cutoff LOW over the eastern Rockies.
ALLOWING FOR LIGHT EASTERLY FLOW TO BRING A COOLER AND DRIER SURFACE AIRMASS TO THE REGION LATE TONIGHT INTO EARLY MONDAY MORNING. WITH SLIGHTLY WARMER TEMPERATURES IN THE MID TO UPPER 50S ANTICIPATED NEAR THE IMMEDIATE COAST.
DEW POINTS ARE RUNNING 10 TO 16 DEGREES COOLER THAN THIS TIME YESTERDAY AT MANY LOCATIONS (I. WITH HIGH PRESSURE IN PLACE OVER THE MID/SRN ATLANTIC BASIN.
MADE SOME MINOR ADJUSTMENTS TO THE TEMPERATURE TREND AS A FEW URBAN PLACES WERE WARMER THAN EXPECTED. ALL ELSE LOOKS AN TRACK THIS EVENING UNDER HIGH PRESSURE.
With deep-layer ridging in place, clear skies will prevail overnight once the final batch of clouds dissipates near the FL Panhandle coast. After that time, high pressure will settle south toward the waters which will finally weaken the pressure gradient and allow winds and seas to subside for the work week.
1226 AM EDT MON APR 18 2016 HIGH PRESSURE ACROSS THE AREA THIS EVENING WILL WEAKEN AND MOVE TO THE SOUTHWEST THROUGH MONDAY.
DISTURBANCES ROUNDING THE BASE OF THE UPPER TROUGH AND THE SURFACE BOUNDARIES WERE PRODUCING SHOWERS AND THUNDERSTORMS OVER THE WESTERN GULF COAST STATES AND INTO THE SOUTHERN PLAINS. ACROSS THE CENTRAL SECTIONS OF THE COUNTRY A RIDGE OF HIGH PRESSURE WILL KEEP THE UPPER LOW FROM ADVANCING EAST UNTIL THE START OF THE WORK WEEK WHEN THE UPPER LOW MOVES INTO THE RIDGE AND WEAKENS IT. MODELS SIMILAR IN THE UPPER LOW TO LIFT EAST AND THEN NORTHEAST ACROSS THE UPPER RIDGE ALLOWING THE RAIN CHANCES TO INCREASSE FROM WEST TO EAST ACROSS THE FOUR STATE REGION.
900 PM EDT SUN APR 17 2016 HIGH PRESSURE REMAINS OVER THE AREA THROUGH MONDAY NIGHT.
FORECAST PERIOD CONTINUES WITH A LARGE RIDGE EXTENDING ACROSS MUCH OF THE EASTERN THIRD OF THE NATION.
1146 PM EST Thu Nov 24 2016 An upper level ridge will build over the region tonight. A cold front will cross the commonwealth late Friday and Friday night, bringing colder air on a gusty northwest wind.
Another dry cold front is moving through the area this afternoon.
Clouds will stream into the area as high pressure exits to the east.
A mid level trough will move over the region, continuing unsettled weather through the weekend with plenty of clouds along with rain and snow showers.
Have the highest highs today over central SD (into the lower 50s) while some existing snow on the ground over the James Valley and especially east of the Coteau will keep temperatures in the lower 40s. Continued warm air advection aloft will strengthen the low level inversion tonight and lead to another night of fog potential.
Upper high pressure will build over Colorado through Friday.
Low pressure at the coast is extremely slow in breaking down the current upper level ridge sitting over the Great Basin. A stream of moisture will continue just west of the forecast area until possibly late Sat night when the trough splits and the southern portion has a better chance of undercutting the ridge. With all this southerly air flow, temperatures, especially along the southern border, stay 10-plus deg F warmer than climatic normals. With first the high pressure, then the split flow pattern over the forecast area, winds will stay below significant speeds.
1238 AM EST Fri Nov 25 2016 Lingering low level moisture from yesterday's low pressure system keeps cloudiness around through the overnight hours tonight.
The timing of the cloud clearing will subsequently impact high temperatures today, and thus have the highest values in the mid to upper 40s (closest to the blended solutions) in the SW CWA and the coolest readings around 40 in the NE.
256 AM MST Fri Nov 25 2016 Current surface map places trof across Montana into Wyoming. Water vapor shows upper level ridge building across the northern plains.
Temperatures will remain above normal with lows tonight from the mid 50s far north to the mid 60s near the coast from around Tampa Bay southward and highs on Friday mostly in the lower 80s.
355 AM CST Fri Nov 25 2016 06Z surface data has as weak trof moving through Minnesota and Wisconsin with high pressure over the Plains. Some extremely weak returns associated with the upper level disturbance moving into Wisconsin might produce a sprinkle or flurry in the highway 20 corridor. Tonight, quiet and dry conditions will be seen across the area as high pressure moves into the Ohio Valley.
though cooler temperatures will return for the weekend.
242 AM CST Fri Nov 25 2016 Last night at this time, the low cloud deck, as seen by 11-3. But with the back edge of the low cloud field seen by that same 11-3.
The Great Lakes continues to be pestered by a weak area of low pressure, which on the larger scale, is embedded in messy synoptic pattern.
308 AM CST Fri Nov 25 2016 Cold front currently heading toward northern Mexico with cooler air gradually filtering southward behind the front. Moisture will gradually increase today and tonight in the cooler air as warm advection increases above and north of the front. Temperatures are expected to be below normal today in the cooler air and increasing clouds with above normal temperatures tonight.
Slightly Cooler Today. A very weak system/dry cold frontal boundary will continue to push eastward through the region this morning. Temperatures will be just a few degrees cooler today across the area as a very slightly cooler air mass advects into the region. Some localized areas of fog may be possible, especially closer to the larger lakes bodies where water temperatures are still in the lower 60s.
353 AM EST Fri Nov 25 2016 Weak high pressure will affect the area today through much of the upcoming weekend.
1120 PM CST Thu Nov 24 2016 Early afternoon water vapor imagery and mosaic radar data indicate a mid-level vorticity maximum over eastern South Dakota, a secondary perturbation over western South Dakota, and a trough axis trailing southwest into the central High Plains.
1016 PM MST Thu Nov 24 2016 High pressure will be over western and central Wyoming tonight with clearing skies. Friday morning southwest flow aloft will move in ahead of a Pacific low pressure trough with windy conditions forming along and near the east slopes of the mountains and through the wind corridor across Sweetwater.
341 AM EST Fri Nov 25 2016 A weak frontal boundary in the forecast area will push east of the area tonight as high pressure shifts eastward.
1013 PM MST Thu Nov 24 2016 Water vapor shows short wave trof moving thorugh the wrn Dakotas with clear skies across MT/WY. After a cold night tonight, upper ridge will rebuild into the nrn plains for Friday, resulting in dry wx and warmer temps.
MVFR to IFR ceilings are expected to develop overnight behind a cold front across northeast Oklahoma and northwest Arkansas. Cold front has pushed into NE OK and will make it through of western AR by sunrise Friday. with the expectation that the low clouds currently across E KS spread southeastward overnight keeping temps from cooling too far.
937 PM MST Thu Nov 24 2016 Upper ridge is building over the area with some warm advection high clouds spreading over our west this evening. Have tweaked temps and winds slightly across the lower elevations based on current conditions, but forecast is on track for lows in the upper teens to mid 30s across the area.
A mid/upper level trough moves across the Upper Great Lakes today, with a 105 knot jet max moving across the Lower Great Lakes. An exception is in far north areas, where they are near freezing.
/Issued 356 PM CST Thu Nov 24 2016/ Cold front has cleared the CWA and continue to push south with high pressure building into the area. Will see a quick return flow by tomorrow aftn as the high center shifts east of the region. Initially, we will continue with status quo wrt what we have seen thus far this season as mid-upr level ridging builds across the area leading to pleasant above normal temps this weekend.
Short term guidance continues to bring the low cigs in after 06Z and this will limit how much the area cools down through the night.
which should expand ESE as winds veer NW ahead of a cold front that will enter NE TX/SW AR by daybreak.
At the surface, weak cold front lies east of the area along the eastern slopes of the Appalachian Mountains this morning. High pressure currently centered over SW Indiana will build eastward through tonight. This trough passing N of the area today may set off a few light sprinkles in our SW Virginia counties. However, with moisture confined to lowest 5000 ft and best dynamics well north of the area, only thinking slight chance POP which will end by early afternoon as the lowest levels dry out even further.
Temperatures overnight should easily fall into the lower to mid 40s.
453 AM EST Fri Nov 25 2016 A weak frontal boundary in the forecast area will push east of the area tonight as high pressure shifts eastward.
315 AM EST Fri Nov 25 2016 Lots of clouds with possibly very light rain or drizzle behind cold front now off to our east.
226 AM CST Fri Nov 25 2016 The area is in a post frontal zone with northwest winds expected for most of today, but turning more southerly in the afternoon as high pressure becomes centered across the southern High Plains.
105 AM EST Fri Nov 25 2016 Weak high pressure to the northeast, will keep a generally easterly flow across South Florida through the TAF period. For the remainder of the afternoon and into the evening hours, skies will be partly cloudy with breezy easterly winds, as the region remains under a fairly tight pressure gradient with high pressure slowly shifting eastward across the western Atlantic to the north. The high pressure to the north will weaken and give way to a weakening cold front associated with an upper-level trough swinging through the Great Lakes and Northeast.
1140 PM CST Thu Nov 24 2016 A mid and upper level trough over the Plains continues its eastward progression. Current position of the cold front stretches from eastern Nebraska to Salina to Hutchinson and Medicine Lodge; this front will keep moving southeast through the evening.
346 AM CST Fri Nov 25 2016 (Today and Tonight) A cold front is currently making its way through the area early this morning, and has just passed though the San Angelo area. With lots of cloud cover and possibly scattered showers behind the cold front today, temperatures will be cooler with highs only reaching the upper 50s to lower 60s. Tonight, those same clouds will keep temperatures from dropping off too much, keeping lows in the low to mid 40s for the most part.
a chunk of pacific high pressure across the Cntl Rockies moves into the midsouth as low pressure circulates into Cntl Canada. A thermal ridge will strengthen across the Cntl Plains and a mixed layer across ncntl Neb is pointing toward the warmer lows near 30.
If clouds break up faster than expected, temperatures will be much higher, especially in western Minnesota where current forecast highs are in the lower 40s.
Tonight upper level ridging remains over the forecast area with a weak pressure pattern.
A ridge axis will settle closer to the region as a front begins working its way through the southeast. The east-west orientation of the ridging and its proximity to our area will keep winds lighter today than in recent days, with a light onshore component expected to develop by late morning.
/ISSUED 935 PM CST Thu Nov 24 2016/ The wind shift associated with the advance of cooler air was located just east of I-44 at 930 p. This front will continue to move southeast, bringing somewhat cooler weather to Oklahoma/north Texas for tonight and Friday. /issued 219 PM CST Thu Nov 24 2016/ A cold front with shallow cool/cold air will continue to push across Oklahoma and western north Texas through the evening hours.
Warm air advection and ridging will stabilize the atmosphere and any lingering moisture will result in patchy stratus over north-central Colorado but no additional shower activity. However, warm air advection ahead of a deepening trough over the eastern Pacific will allow temperatures to recover to near or a little above normal on Friday.
High pressure over the region with light winds is giving the area current temps ranging mainly in the 20s at this time.
High temperatures will be a bit warmer than yesterday, in the upper 40s far east to the mid 50s over southern portions of forecast area.
Winds may pick up a little, especially west of Dodge City, as the surface pressure gradient tightens a bit due to low pressure that is developing in the Rockies. A surface cold front will continue to slide southeast into the Southern Plains tonight with high pressure building into western Kansas. Winds shift back to more of a southerly direction tomorrow as a trough of low pressure develops across eastern Colorado. Lows tonight will range from the lower 20s across west central Kansas to low 30s across south central Kansas.
251 AM EST Fri Nov 25 2016 Latest satellite imagery and obs upstream do show some holes in the low stratus canopy over eastern Missouri, so we have some reason to see some holes in the clouds this afternoon. Lows should be near freezing.
307 AM EST Fri Nov 25 2016 A zonal west-to-east upper level flow exists across the state of Georgia this morning with a weak 850mb trough just west over Alabama. Low lvl trough/weak cold front will cross the forecast area today with drier air moving in from the northwest. Upr (500mb) trough moves through tonight reinforcing northerly flow that could result in some gusty winds (15-25mph) overnight, especially over the higher terrain of north GA.
Upper trof continues to move east with returns mainly confined to east of the James valley. The 500mb trough overhead this afternoon will be across the Great Lakes region at the start of this period, as a ridge builds over our region. The ridge will remain across the central U.
304 AM CST Fri Nov 25 2016 Early this morning an upper level trough was moving east across the upper Midwest, southward to the mid MS river valley. This upper level trough is progged to amplify Today as it continues to shift east into the Great Lakes and OH river valley. Eastern Kansas will be under northwesterly flow aloft as an upper ridge amplifies across the central Rockies. High temperatures will range from the lower to mid 50s, with the cooler readings across far northeast KS, along the NE border. Tonight will be clear with temperatures falling off into the lower to mid 30s.
Temps remain well above freezing so not expecting any ice accumulation either. Also lowered temps slightly today as cloud cover will likely result in cooler high temps than previously expected. Low temps will be at or below freezing as the upper level trough axis rotates overhead. Temps could be warmer than forecast if cloud cover does not scatter out.
1151 PM EST Thu Nov 24 2016 A low pressure center over the northern Great Lakes will move east into Ontario early Friday. A weak trough of low pressure trailing the low will drop across the area on Friday.
This low level easterly flow pattern will persist through the rest of today, as high pressure riding slides by to the north. In general, temperatures across the region will max out in the lower 80s, around between 2-4 degrees above normal for this time of year.
Likely keep MVFR conditions for a time on Friday ahead of cold front.
/issued 945 PM CST Thu Nov 24 2016/ Latest sfc analysis shows the cold front continues moving south thru the Permian Basin, but not yet having much effect on temps. Upper ridging builds in this weekend in advance of the next upper trough moving into the West.
1042 AM EDT SUN MAY 22 2016 A few showers will be possible across the Scioto Valley this afternoon as a low pressure system pushes off to the east.
This activity is within the mid level thetae ridge axis, and is being forced by mid level WAA and confluent flow near the sfc. The upper ridge will shift eastward a bit today as the mid to upper trough moves into the SW CONUS. Storms are expected to develop on the western fringe of the upper ridge, mainly across the SW. Widely scattered storms will also be possible across much of OK by tomorrow morning as height falls continue over the mid level thetae ridge axis and mid level WAA increases.
Meanwhile, water vapor and satellite imagery show a mid-upper level trough/low complex located across the Mid-Atlantic region, which is still supporting large swath of deep convection down to the Bahamas. Drier air is now slowly filtering into the region in the wake of the trough and should help in bringing down overall POPS across the area. For the first half of the work week, the aforementioned upper level low will continue to meander across the Mid-Atlantic with several energy impulses traveling along the main trough.
740 AM EDT SUN MAY 22 2016 Aviation High pressure will remain in control of the weather pattern through Monday and result in mostly clear skies and a continued moderating trend of temperatures.
1005 AM CDT SUN MAY 22 2016 Temperatures have already reached the lower to mid 70s throughout the Mid-South this morning. The upper level ridge continues to slowly move to the east, it has some signs of an omega block-yet the troughs to the east and west aren't strong enough to keep the pattern from moving. The upper ridge currently over the plain states has a northerly flow aloft. Clouds will also be on the increase late in the day as the upper ridge moves to the east.
Upper level low pressure will bring another showery day today for the region, with showers again on Monday.
921 AM EDT SUN MAY 22 2016 Showers today will give way to drier and warmer weather through mid week. As a mid-level low drops into the base of the upper trough over our region today, mid-level temperatures will drop across the area, steepening lapse rates through the day.
612 AM CDT SUN MAY 22 2016 Latest 07z surface analysis shows high pressure from Minnesota/Wisconsin to the Central Plain States. Will continue to focus the higher chances of showers/thunderstorms over these areas.
Dry with near climatology temperatures today due to deep layer WNW flow between low pressure offshore of the Atlantic seaboard and high pressure across the central CONUS. Tonight a dry low level airmass and mostly clear skies will enable low temps to fall below climo inland into the mid/upper 50s to the lower 60s along the coast with no fog expected.
A broad upper level low pressure system will remain over the western states through much of the week. This low pressure will maintain periods of moist unsettled conditions across the region throughout the week. Per morning satellite imagery the upper level low continues to rotate and migrate northeastward into Alberta and Saskatchewan, Canada draping the long wave trough southward stretching into Utah. All this to say, several high-resolution models have resolved the line of shower activity this morning and keep the trend confined mostly to the northern portion of Utah through early afternoon and tied closely to the higher terrain.
626 AM CDT SUN MAY 22 2016 Today looks to be the last quiet day for a while, thanks to an upper-level ridge overhead, downstream of a large trough over the western U. Subsidence within the ridge will provide mostly sunny skies through the afternoon while return southerly low-level flow allows temperatures to rise to near 80 degrees across most of the forecast area. Upper ridge will shift to the east tonight, allowing southwesterly upper-level flow to develop across the Plains. The first round of thunderstorms may spread into eastern KS and western MO late tonight into Monday morning as convective activity across the High Plains spreads eastward overnight.
There is probably better confidence in convective initiation occurring along the dryline in the late afternoon somewhere along the highway 83 corridor. With storm motions north northeast, the most severe storms are not likely to propagate very far east, however lingering convection could develop into central Kansas into the overnight hours, as well as some activity along a weak pacific origin cold front making its way into the area by early Monday.
Aloft, and upper trough/low will linger along the mid-Atlantic states.
A broad upper level low pressure system will remain over the western states through much of the week. This low pressure will maintain periods of moist unsettled conditions across the region throughout the week.
Upper trough that brought the clouds yesterday has slid off to the west, and now we are seeing the influences of the eastern periphery of upper level ridging. Other than some low level stratus CSV and some MVFR fog induced vsbys, TEMPO IFR CKV/CSV, at all terminals that should last only thru 13Z-14Z, ridging influences sfc/aloft will provide for VFR/SKC conditions thru 23/12Z.
655 AM CDT SUN MAY 22 2016 00z upper-air analysis showed a substantial trough over the western U. with an amplified downstream ridge from the central Plains into Canadian Prairie Provinces. In response, a weak surface wave will develop from the lee of the Colorado Rockies into the North Dakota-Minnesota Red River Valley by 12z Monday, along a cold front advancing east through the northern and central Plains. Despite increasing clouds, we should see slightly warmer temperatures today; in the mid 70s to around 80. Thunderstorms which are expected to develop along the cold front over western Nebraska this afternoon and evening should begin to affect portions of northeast Nebraska late tonight before spreading east and southeast across the remainder of the area Monday morning into afternoon.
Compared to yesterday, this morning was drier and cooler by 5-10 degrees with overnight lows in the 50s.
Temperatures will be a little warmer today, but still well below normal. Isolated showers circulating around the upper closed low continue this morning in the West Central Mountains as of 3 AM MST. Closed low will be well to the region's northeast later this morning, but a few weak disturbances will keep showers in the forecast through Monday. Temperatures will trend warmer through the period.
Chattanooga Airport, TN 79 55 82 55 / 0 0 0 0 Knoxville McGhee Tyson Airport, TN 76 54 77 54 / 10 10 0 0 Oak Ridge, TN 76 53 78 53 / 10 0 0 0 Tri Cities Airport, TN 70 49 72 51 / 30 20 10 10.
Near the surface, a lee side trough of low pressure remains anchored across eastern Colorado. There is probably better confidence in convective initiation occurring along the dryline in the late afternoon somewhere along the highway 83 corridor. With storm motions north northeast, the most severe storms are not likely to propagate very far east, however lingering convection could develop into central Kansas into the overnight hours, as well as some activity along a weak pacific origin cold front making its way into the area by early Monday.
Looking for afternoon highs today in the low to mid 80s under mostly cloud skies.