Aikyam-Lab/Synoptic-Bench huggingface dataset:
322 AM CDT Sat Apr 1 2017 Upper-level ridge will maintain mostly sunny skies across the region for most of the day. As ridge shifts east, mid-level clouds to increase from the southwest. Temperatures this afternoon to climb into the low to mid 80s across the ArkLaTex.
For today, expecting highs to be a few degrees warmer than Friday as 925/850 mb temps are a few degrees warmer than what was over the area yesterday.
422 AM MDT Sat Apr 1 2017 Latest upper air analysis shows the closed low slowly moving east across the Desert Southwest. A weak nose of the low level jet will also develop in the afternoon over the southeast portion of the forecast area, further enhancing the lift. Tonight the precipitation will end from west to east as the closed low transitions to an elongated trough and shifts the lift east of the Tri-State Area.
347 AM CDT Sat Apr 1 2017 Positively tilted upper low moving across the four corners region early this morning. At the surface, a cold front was located across west TX with warm front near the TX/OK border. As the upper low has slowly progressed eastward, the lead PV anomaly has rounded the base of the trough and moisture transport vectors on the 300K surface have responded, originating from the Gulf of Mexico under good subtropical moisture tap aloft. As the warm air surges northward out of the southern Plains ahead of the main low, so too will the area of mid level frontogenesis as cooler mid level temps work in from the northwest and meet the warmer surge from further south.
Highs in the lower 60s in the northeast, the 70s central, to the lower 80s south.
355 AM CDT Sat Apr 1 2017 Early Saturday morning, a large closed upper low was centered just south of the Four Corners. Then expect a bit of a lull for much of the day as we await the next short wave impulse of energy to eject from the large trough.
Synoptic Setup: Western CONUS begins under split flow with the base of a trough over the Four Corners and its axis facing back towards the central US plains and Upper Mississippi Valley. The ridge parts crests over Montana and drops back toward Nevada and California. Farther upstream, another trough sets off the coast of British Columbia and back into the Bering Sea where its being fed modified arctic air. COnditions should remain dry as the ridge exits the area.
1205 AM CDT Sat Apr 1 2017 A mid/upper ridge was moving over the central Conus while low clouds and below normal temperatures remained entrenched across the forecast area. A warm front may lift north across the Oklahoma state line into Southern KS on Saturday but temperatures north of the front will likely remain below normal once again with moist upslope flow and limited insolation.
149 AM EDT Sat Apr 1 2017 Low pressure located near Cape May this evening will push off the coast later tonight.
Pacific high pressure will follow and extend across NC and VA through the rest of the weekend. Main adjustment to near term forecast was to tweak temps up over the se half of the forecast area as temperatures have been slightly warmer than forecast. At 01Z, a sfc cold front was about to exit our se counties. The upper trough axis will be exiting the coast tomorrow morning with heights rising modestly in northwest flow.
327 AM EDT Sat Apr 1 2017 An upper-level ridge of high pressure will continue to shift east toward the eastern Tennessee Valley today, bringing with it a warmer and drier air mass.
Perhaps it might be more in the form of flurries or freezing drizzle along the Laramie Range to the Nebraska border based on NAM/GFS forecast soundings, with rain/snow mix further east through the mid morning. Some locations along I-80 from Sidney to the Summit and I-25 from the CO border to Deer Creek are still experiencing fog and perhaps drizzle or freezing drizzle as visibilities are down to one half mile or less. Again, NAM and GFS forecast soundings support precip types of freezing drizzle with perhaps light snow mixed in.
458 AM EDT Sat Apr 1 2017 Snow will taper off later today as low pressure system move further East of the region.
542 AM EDT Sat Apr 1 2017 Light rain should end this morning as low pressure exits.
333 AM PDT Sat Apr 1 2017 Warmer today under high pressure aloft with gusty north winds near the mountains.
We have updated to include a thunder mention over much of the central and eastern zones through the remainder of the night as lift from the slowly approaching upper low spreads across the area. /issued 1156 PM CDT Fri Mar 31 2017/ VFR is already deteriorating ahead of schedule near PVW as a cold front arrives with more gusto. /issued 1047 PM CDT Fri Mar 31 2017/ Updated the forecast through Sat to account for a more aggressive cold front that is now favored to stall near or south of Highway 380 by midday.
Expect a few showers to make it into NW OK before sunrise, but PoPs should remain in the low chance category through about 18Z.
243 AM CDT Sat Apr 1 2017 A cold front will result in cloudy and, in some places, cooler conditions today with a chance for light rain for areas along and north of Highway 2 - most likely along the north shore towards late- morning.
321 AM EDT Sat Apr 1 2017 Light rain should end this morning as low pressure exits.
1126 PM MDT Fri Mar 31 2017 Large upper low crossing the Four Corners region will continues its slow eastward drift tonight through Saturday. Inverted trough across the central high plains will continue to bring precip to the region. Any precip reaching the higher Black Hills will fall as snow. This will bring in warmer air with temps reaching the 50s to low 60s Saturday. The cooler spots will be across SW/SCentral SD where clouds will take longer to erode.
Light onshore flow will become light and variable to calm late tonight with high pressure working into the region from the north.
A large slow moving upper level low pressure system over the Four Corners Region will move out into the Central U.
300 AM CDT Sat Apr 1 2017 High pressure at the surface and aloft will bring a nice weekend to the region.
The clouds will likely hold down temperatures today in the low to mid 50s areawide. Going to stay close to the blended model forecast lows tonight given low confidence on ridge/valley splits.
High pressure will dominate this period. A mid level ridge axis will be oriented from the Gulf Coast northwest through Iowa to southern Minnesota. Until then, high clouds spreading north out ahead of the low will arc to the east across the northern tier of the U. , over the top of the ridge axis west of Wisconsin.
Low pressure, over the Great Lakes, will continue to move east towards the northeastern portion of the United States through Friday. This will allow a cold front over the Southeastern United States to move southward and wash out over South Florida. This will keep the low level moisture in place over the area, leading to a slight chance of showers over the interior areas late Saturday.
518 AM EDT Sat Apr 1 2017 Light rain should end this morning as low pressure exits.
548 AM CDT Sat Apr 1 2017 The low MVFR CIGs remain just outside the NRN terminals this morning.
A low pressure system over the Desert Southwest will continue move away from the region today, allowing high pressure to briefly settle across the Great Basin.
Winds will remain from the northeast at less than 10 mph with afternoon temperatures warming into the upper 60s to mid 70s across most of the area, with slightly cooler air residing along the KY border.
319 AM CDT Sat Apr 1 2017 Upper ridge to shift over the area today bringing dry conditions and light winds. winds will initially be northerly around 5 mph and gradually shift to easterly as the high reaches a position northeast of the area tonight. Skies have had a substantial clearing overnight west of I-57 due to the approaching ridge, but still hanging onto low cloud cover to the east. For tonight, increasing cloud cover will keep temperatures milder than this morning, with lows only reaching the lower 40s. Upper low currently spinning over northeast Arizona will be our next item of interest, dropping into far northern Mexico before lifting northeast across Texas.
Models generally shift this east later today as weak northern trough arrives from the wnw and top of southern ridge flattens out a bit. Far southern MN will be the most prone to maintaining high clouds, where max temps today will be a couple degrees cooler than areas farther north. Temps in most areas look to be on target for highs in the lower 60s. Upper ridge moves over the area late tonight, and south central MN will come into southwest upper flow late tonight.
353 AM EDT Sat Apr 1 2017 Front associated to the low pressure over the Northeast Plains faded away over South Florida leaving behind some low level moisture over the area with light southwesterly flow.
With high pressure over the region, skies are clear. Radiational cooling will allow temps to drop to the low-mid 50s overnight. /10/ Prior discussion below: Tonight and Saturday: Warmer than normal and dry through the period. A 1022mb high will drop from the northern plains this afternoon to the southern Great Lakes region by Saturday evening while mid level ridging strengthens over our region ahead of a large closed low swinging south of the four corners region.
131 AM EDT Sat Apr 1 2017 Rain chances should end this morning as low pressure exits.
although a better fetch of moist air and proximity to the upper low may bring a little better coverage across the area tomorrow.
Otherwise, a persistent western CONUS upper trough will support stout southerly winds and seasonably warm temperatures in the upper 80s to low-mid 90s Mon through Wed. Tue night chances increase well north of I-70 as a cold front slowly approaches from the northwest. Thinking shower/thunderstorm chances will begin to increase areawide Wed- Wed night, as base of western CONUS trough finally approaches from the west, interacting with an increasingly moist atmosphere across Mid-America. Chances for showers and thunderstorms will continue across the region Thu through at least early Sat, as the high precipitable water airmass continues, with a cold front passing southeast across the forecast area sometime Fri-early Sat. However, the overall threat for locally heavy rainfall will continue, with strong to marginally severe storms possible with the cold frontal passage sometime Fri- early Sat.
Dry and breezy conditions continue this evening as low pressure swings across the northern Great Basin. Temperatures are mild this evening with 8 pm temps across the area generally running 3-6 degrees cooler than this time yesterday.
604 PM CDT SUN SEP 4 2016 It was another great weather day for the Labor Day holiday weekend with temperatures in the low/mid 80s at most airport sites. Heat index values in the low/mid 90s will be more common Monday afternoon, especially over the western cwfa and in areas off the higher terrain of the MO Ozark plateau. The upper level ridge axis just off to our east and south will flatten out or deamplify by Wed-Thu. A stronger upper level system will finally push a cold front into or through the area Fri-early Sat.
1010 PM EDT SUN SEP 4 2016 A blocking ridge aloft will keep TS Hermine offshore, though it will linger off the NJ coast through midweek.
A deep low pressure trof will move over the Rockies tonight.
/issued 302 PM CDT SUN SEP 4 2016/ SHORT TERM (Tonight through Monday Night):Surge of moisture combined with coastal troughing has led to scattered showers with brief downpours along with isolated thunder this afternoon. Overnight min temps will range from the lower 80's at the coast to mid-upper 70's elsewhere.
Patchy fog is possible as the cold front moves southward across the area tonight across east central Wyoming and the northern NE panhandle. Models show the upper level trough axis lifting northeast. High temperatures will be slightly cooler behind the front.
1034 PM EDT SUN SEP 4 2016 An expansive area of high pressure will remain across New England and maintain the dry weather pattern through mid-week.
/issued 350 PM CDT SUN SEP 4 2016/ (Tonight and Monday) A narrow ridge of high pressure aloft will bring mostly dry weather to west central Texas the remainder of today, tonight and early on Monday. An upper level trough of low pressure southeast of this ridge will drift toward the northwest from the Texas gulf coast overnight tonight and into tomorrow and bring with it a surge of moist air from the Gulf of Mexico which is expected to reach south and southeast counties of west central Texas on Monday afternoon and early evening. High temperatures Monday will be more humid than average 89 to 92 degrees with Monday morning low temperatures in the low 70s.
715 PM EDT SUN SEP 4 2016 Mid level ridging over the eastern Great Lakes will remain in control of northern Michigan's weather tonight through much of Labor Day. Expect mostly clear skies with lows in the lower to middle 50s (except for around 60 near the Lake Michigan shoreline).
646 PM CDT SUN SEP 4 2016 High pressure surface and aloft will slowly shift east through teh period.
With southerly flow and dry air mass in place, and low-level thicknesses creeping up over the next several days, have trended high temps toward some of the higher BOIVerify numbers.
The 19Z sfc map shows the low over Jackson and Jones Counties in central SD, with the trough extending northeast through far northwestern Brown County. Best chance for us initially will be across central SD, and then firing up the trough. Monday afternoon could bring additional showers/thunderstorms to the southeastern counties as the sfc boundary lingers over southeastern SD and an additional low rides up the trough from NE.
5 PV trough looks to weaken somewhat with time, but QG forcing still appears sufficient to aid synoptic scale lift into NW Iowa later this evening.
/issued 206 PM MDT SUN SEP 4 2016/ A low pressure system will move from southwest Idaho through central Idaho into southwest Montana tonight. Quite a few showers and a few thunderstorms have developed this afternoon around the low. Expect showers to continue through the night with the best coverage in close proximity to the low as it tracks through central Idaho. On Monday, the low will lift into central Montana but there will still be a few showers around especially across the central Idaho mountains and into the upper Snake highlands. Temperatures remain rather cool under this low, and some high elevation mountain snow remains possible tonight into Monday.
With Hermine off to our east and troughing over the Rockies, Middle Tennessee remains smack-dab in the middle of ridging -- both aloft and at the surface. The only thing to report is a slight change in environmental conditions over the last 24 hours as a southeasterly boundary layer flow has begun and is starting to drive our dew points back into the mid to upper 60s for most and a few in the low 70s.
Around the Southeast side of the upper ridge, an inverted upper level trough of low pressure was working west and along with returning lower level flow and moisture helping produce showers and thunderstorms along the Gulf Cast and inland.
70/DD For 06Z TAFs: VFR conds will prevail over the course of the valid TAF period, as a large ridge of high pressure aloft will remain centered immediately to the sw of the region.
620 PM CDT SUN SEP 4 2016 Temperatures continue to warm on the western periphery of a large high pressure system centered over the northeastern CONUS. Southeast flow will continue to turn to a more southerly direction late tonight increasing the low level warmth and humidity.
The high pressure ridge that has dominated the pleasant weather for the weekend will shift further to the east, setting up a return flow for the Midwest. Tonight will remain similar to the last few nights, quiet with cirrus streaming into the region, but a few degrees warmer as the winds continue out of the southeast.
1259 AM EDT MON SEP 5 2016 Fair weather expected to continue through this week, as dry high pressure dominates. Upper and surface circulations, associated with post tropical storm Hermine, will remain offshore the Mid Atlantic and NE US coast, while upper high pressure will remain centered to our west, providing a continued dry northerly flow aloft.
However, the high pressure that has dominated the local weather the past few days is beginning to pull away. The southerly flow on the back side of the high is causing warmer and more humid air to filter into area. So, the overnight conditions will be warmer and muggier than the past few nights. The high pressure ridge that has dominated the pleasant weather for the weekend will shift further to the east, setting up a return flow for the Midwest. Tonight will remain similar to the last few nights, quiet with cirrus streaming into the region, but a few degrees warmer as the winds continue out of the southeast.
Eastern Kentucky remains under the influence of high pressure. The upper level pattern shows that Post Tropical Storm Hermine will remain along and near the Mid Atlantic Coast, meanwhile Upper level ridging will be the story for the Ohio Valley. This will keep a higher amplitude trough setup across the Western Conus.
1152 PM CDT SUN SEP 4 2016 It was another great weather day for the Labor Day holiday weekend with temperatures in the low/mid 80s at most airport sites. Heat index values in the low/mid 90s will be more common Monday afternoon, especially over the western cwfa and in areas off the higher terrain of the MO Ozark plateau. The upper level ridge axis just off to our east and south will flatten out or deamplify by Wed-Thu. A stronger upper level system will finally push a cold front into or through the area Fri-early Sat.
Maliawco A large trough of low pressure aloft is entrenched over the northern Rockies region which places northeast Montana in a steady moist SW flow aloft. Monday: The closed upper low center becomes an open wave and moves directly over northeast Montana.
1137 PM EDT SUN SEP 4 2016 A blocking ridge aloft will keep TS Hermine offshore, though it will linger off the NJ coast through midweek.
The farther north and east you get, the drier conditions get -- dewpoints in the lower to mid 60s in the far northeast! No big changes will be made to the ongoing 7 day forecast.
Stability of the lowest 10K feet increases as one goes east across the forecast area so expect convective cluster to gradually run out of steams and remain non severe mainly east of I-29. However, once the evening arrives, the low- level jet should ramp up rather quickly and become collocated with an an increasing push by cooler boundary later temperatures.
735 PM EDT SUN SEP 4 2016 High pressure over the Lower Great Lakes will continue to gradually shift eastward over the next couple of days.
1257 AM EDT MON SEP 5 2016 A ridge of high pressure will remain in place across the Ohio Valley through mid week as a tropical system remains anchored off of the east coast. This period will be characterized by a return to mid-summer temps and humidity - and this represents the high confidence area of the forecast.
(Issued 232 PM CDT SUN SEP 4 2016) Deep layer ridging remains firmly in place across much of the southeast US and will not really be budging much at all through the next several days. In fact, both GFS and ECMWF have the 500hPa ridge strengthening over the region through mid week to around 595-597dam.
with a deep trough to our West. Guidance suggests trough will begin to deamplify after midweek. Expect afternoon highs generally around 89-92 degrees each day with morning lows in the low to middle 70s.
Most models have an inverted trough/cold front extending NE from the low to the Arrowhead of MN. A sharp theta-e gradient will exist along the cold front.
734 PM EDT SUN SEP 4 2016 A large ridge of high pressure, extending from the Canadian Maritimes into the northeastern states, will keep our weather dry over the next several days. Ridging both at the surface and aloft will dominate over the area through the period resulting in mainly clear skies with dry weather.
Did lower overnight lows as some locations are cooler and drier than previously forecast.
1035 PM EDT SUN SEP 4 2016 Currently - Surface winds are light to gentle out of the east across the Florida Keys and surrounding waters due to a weak ridge holding across the Florida Peninsula. A subtle lower level inverted trough is wording its way westward through the area. Temperatures are in the lower 80s with dew points in the upper 70s. Short Term Update - Light to gentle mainly east breezes will remain through the overnight due to the ridge to our north. An environment somewhat more supportive of convective development due to the traversing inverted trough, and a number of boundaries evident on radar and satellite, justifies holding near normal pops. Winds will remain light to gentle out of the east across Keys waters due to weak ridging across the Florida Peninsula.
Lingering frontal trough across the region will gradually shift southward and fade into early this week. A northeast surge behind this frontal trough may allow for winds to increase in upwards of 15 kts offshore/north of the Cape late overnight. Increasing onshore winds expected north of a lingering frontal trough on Labor Day with wind speeds up to 10-15 knots north of Sebastian Inlet.
951 PM EDT SUN SEP 4 2016 Post Tropical Cyclone Hermine will continue to lift slowly northeast along the East Coast through late week as high pressure persists over the Southeastern States. Will hang on to a slight chance PoP through the evening NE sections/Outer Banks then indicate gradual clearing as weak high pressure continues to build over the area. High pressure surface and aloft will continue to exert it's influence on the area with partly cloudy skies and warm temperatures. Highs will be in the lower 80s.
Behind an exiting trough, clear skies and a cold night are expected for areas east of the Cascades tonight and Monday morning. Model guidance continues to show temperatures lowering into the lower 30s and locally into the upper 20s for eastern valleys.
/Issued 406 PM CDT SUN SEP 4 2016/ The Panhandles will remain in an area of SW flow aloft between mid-a upr lvl high center across the deep south and a trough w/ base digging into NV. H7 theta-e ridging across the wrn 3rd indicates bit of a monsoon connection there while low level SFC to H85 gulf moisture is more evident across the east (hence the mid-upr 60s dewpoints).
With the large upper trough over the West, temperatures remain below average and generally range from the 60s in the mountains, to the mid 70s to mid 80s elsewhere at mid-afternoon. The high temps today were some 2 to 9 degrees cooler than Sat. Warming returns to the region beginning Labor Day as ridging from the eastern Pacific extends into NorCal and mostly light northerly flow develops. The last "little bit" of energy will work SSEwd on the back side of the departing trof on Mon. to be followed by increased ridging on Tue.
935 PM EDT Sun Sep 4 2016 High pressure will maintain dry weather and warm temperatures through midweek. High pressure will maintain warm and dry conditions.
930 PM EDT SUN SEP 4 2016 Skies are mostly clear again tonight as high pressure ridge over the Ohio and Tennessee Valleys.
846 PM EDT SUN SEP 4 2016 Fair weather expected to continue through this week, as dry high pressure dominates.
755 PM EDT SUN SEP 4 2016 A blocking ridge aloft will keep TS Hermine offshore, though it will linger off the NJ coast through midweek.
Water vapor imagery shows high pressure to our south and east and a trough of low pressure well to our northwest.
843 PM EDT SUN SEP 4 2016 A large ridge of high pressure, extending from the Canadian Maritimes into the northeastern states, will keep our weather dry over the next several days. Ridging both at the surface and aloft will dominate over the area through the period resulting in mainly clear skies with dry weather.
830 PM EDT Sun Sep 4 2016 Post Tropical Cyclone Hermine is positioned 300 miles east of Ocean City Maryland. High pressure will move over the region for much of the work week. A cold front will approach from the west towards weeks end. High pressure is in place across the Mid-Atlantic region tonight. from the upper 60s in the cities to the mid 50s in the Highlands.