Aikyam-Lab/Synoptic-Bench huggingface dataset:
Another complex of storms will form tonight along a slow moving weak cold front moving into OK. /ISSUED 301 AM CDT THU JUL 14 2016/ For the next few days, the upper level pattern will be defined by a ridge over the desert southwest and a broad trough across the Great Lakes. Thus far, the ridge has been too dominant to allow any convection across our CWA.
Persistent setup with prevailing SE-S flow courtesy of the Bermuda ridge axis as located over north FL.
646 AM CDT THU JUL 14 2016 08z/3am surface analysis shows cold front extending from Michigan to northern Missouri. Synoptic cold front will make only slow progress southeastward today: however, most model guidance indicates a dry day across the area. Meanwhile, a cooler/drier airmass will gradually filter into the area from the northwest, allowing overnight low temperatures to drop into the lower to middle 60s everywhere except the far SE.
839 AM EDT THU JUL 14 2016 With high pressure building to the Southeast, a moist Southwesterly/Southerly flow will result in diurnal instability. Highs along the coast will be in the lower 90s, with middle to upper 90s inland.
Northwest flow responsible for cooler than average temperatures and low humidity today. Canadian high pressure begins to retreat east Friday, with 850mb temperatures increasing west river in return flow.
614 AM CDT THU JUL 14 2016 With an upper level trough digging across the Upper Midwest and western Great Lakes region, the northern Plains will see flow turn northwesterly. With cooler air aloft continuing to advect into the region, sunny skies this morning will become partly cloudy as cumulus clouds begin streaming into the area from the north. Increased instability in this area will also allow for a few isolated showers or thunderstorms in the afternoon near the Buffalo Ridge. Temperatures will be a few degrees cooler today, with highs in the mid 70s to mid 80s.
1159 AM EDT THU JUL 14 2016 Very warm and humid conditions are expected again today across central Pennsylvania with heat index values approaching 100 degrees in the Lower Susquehanna Valley. Behind this trof passage midlevel atmosphere warmer with low topped cu for most of the region and threat of showers low for this afternoon. Portions of the lower Susquehanna Valley will likely get very close to heat advisory criteria this afternoon with fcst max HX values approaching 100F. The main cold front will traverse the area on Friday with any shower or thunderstorm activity expected to be very isolated in coverage due to much weaker instability and lower boundary layer moisture.
Upper high centered over the Desert SW will extend over NorCal resulting in triple digit in the Central Valley toady. Marine layer increases slightly as upper troughing begins to deepen over CA. Upper troughing then deepens significantly over the weekend as onshore flow increases.
230 PM CDT Wed Nov 2 2016 An upper trough is over Arizona with an upper ridge over the southeastern part of the country. Upper lift and moisture have already increased over the area ahead of this upper trough as indicated by the scattered showers across West Texas and southeast New Mexico. This upper trough will continue to deepen today and begin to move over northern Mexico. Temperatures today are expected to be cooler than yesterday and will largely depend on how long the cloud cover stays over the area. The mid-level lapse rates will decrease after sunset; however, the other severe weather parameters will remain in place along and behind a cold front that will move into the area tonight.
Ceilings will be slow to recover to MVFR tomorrow, most likely holding off until 16-17Z as more scattered showers and thunderstorms begin to affect the region ahead of a weak cold front that should pass through tomorrow afternoon or evening. S to SE winds 5 to 15 KTS will prevail with the highest sustained winds and gusts to 22 KTS possible Wednesday afternoon. Upper air analysis last evening showed a ridge over the eastern half of the country and a trough from the northern Rockies to Baja California. Models are in good agreement of an upper level high closing off over the Gulf and a low closing off over the southwest. Beneath this pattern a cold front will move through west Texas today and reach our northern border by Thursday morning and move through our CWA during the day.
At the surface, the high pressure center that has been to the north since last week finally shifts south in response to approaching cold front.
116 PM PDT Wed Nov 2 2016 Offshore flow will bring warmer temperatures to the region today and tomorrow and gusty winds will develop across Ventura and Los Angeles Counties.
Currently, it's fairly uncomfortable for early November, 02/20z surface observations reveal dew points well into the mid to upper 60s along with temperatures in the low 80s ahead of the surface boundary that continues to slowly push eastward off the panhandles.
421 PM CDT Wed Nov 2 2016 The advertised cold front has already made good progress across the Panhandles and is currently situation from Happy to Lipscomb. Tomorrow we should be mostly precip free as the upper low moves further south over southern Arizona/northern Mexico.
157 PM EDT Wed Nov 2 2016 High pressure will build over the region through mid week.
138 PM EDT Wed Nov 2 2016 Upper air pattern consists of a 500 mb ridge over the sern U. and a trough in the desert sw and Rockies this morning.
A weak wave passing through the upper level ridge has resulted in fairly widespread high clouds this afternoon across western Montana.
318 PM EDT Wed Nov 2 2016 A cold front stretching across southern Lower Michigan will drift southeast through Thursday as low pressure moves across the lower Great Lakes along the front.
217 PM EDT Wed Nov 2 2016 A cold front crosses Thursday.
Aloft, upper level ridging continues to dominate across the southeastern CONUS, with a northern stream short wave trough moving across south central Canada. Another record setting temperature day has occurred across eastern Kentucky today, with readings currently being reported in the low 80s.
121 PM PDT Wed Nov 2 2016 Offshore flow will bring warmer temperatures to the region today and tomorrow and gusty winds will develop across Ventura and Los Angeles Counties.
As this happens, low pressure over the mid-Mississippi Valley will slide into the Lower Great Lakes. Overnight lows will be warmer than last night with the increased cloud cover. There will be a few rain showers lingering around early in the day for the southeast half; however, high pressure will quickly slide into the U. High temperatures will continue to be warmer than normal with highs reaching into the upper 40s to low 50s.
542 PM EDT Wed Nov 2 2016 The region is ahead of an approaching cold front tonight.
220 PM EDT Wed Nov 2 2016 High pressure will remain anchored over the Southeast U. A cold front will move southeastward through the region Thursday night.
332 PM CDT Wed Nov 2 2016 An initially stationary front near the MO/IA border will sink southward as a cold front tonight accompanied by SHRA/TSRA. High pressure builds into the plains behind the front tonight and tomorrow, but the post-frontal air mass is not particularly chilly. Even though daytime highs on Thursday will be around 10 degrees cooler than today, it will still be 10-15 degrees above average.
612 PM EDT Wed Nov 2 2016 The region is ahead of an approaching cold front tonight.
Upper ridge firmly in place across E ID today. Similar conditions could exist Thursday night as well but kept all fog mention out for now as temps Thursday slightly warmer and dew points slightly drier, lessening chances.
If skies become fairly clear toward morning, may see some fog develop given lighter winds as high pressure builds in from the west. Clouds will continue to decrease on Thursday as the high moves overhead.
Low temperatures tonight will be in the low to upper 30s with high temperatures Thursday in the mid 60s to low 70s. At the start of the extended the models show a closed area of low pressure, located over southern Arizona.
Riding along a more defined short wave trough and deepening surface reflection along lingering boundary, these storms have a high chance of maintaining similar intensity as they reach the CWA. The cold front will move south and east of the area Thursday morning. The seasonally cool upper trough will still rotate south and east across the region during this period, so while skies will be clearing expect cooler highs in the upper 50s to low 60s, which is still at minimum several degrees above normal.
Moisture will increase across the area ahead of an approaching cold front that moves in late Thursday. Weak cold front expected to be moving south and east of the forecast area Wednesday evening.
654 PM EDT Wed Nov 2 2016 Passage of a cold front early on Thursday will herald a return of more seasonable temperatures to the Upper Ohio Valley Region. Continued mild tonight ahead of an approaching cold front and mid-level trough later tonight. Showers will be on the increase with likely to categorical POPs spreading north to south overnight into midday Thursday, then tapering off in the afternoon as the cold front and trough exit east of the ridges. Temperatures will remain around 15 to 20 degrees above average tonight, with cooler but still above average temperatures Thursday behind the front.
101 PM CDT Wed Nov 2 2016 Broad southwest flow aloft bringing warm moist air to our southern cwa while trough was digging southeast across the upper Midwest. Much cooler air was located to our north with a frontal boundary separating these two airmasses. Ahead of the digging trough showers and thunderstorms will increase this afternoon south of the front. A few of the storms may approach severe levels but this activity should end early this evening as the main forcing/cold front shifts south of the cwa. Local tools suggest highs along and north of highway 30 may with more clouds and cooler air be at least 3+ degrees too high. This would support based on persistence of mins in the lower 40s northwest to lower 50s far southeast.
442 PM MDT Wed Nov 2 2016 Weak high pressure builds into the area today and, apart from a few showers and storms over the southern mountains, dry weather persists.
316 PM EDT Wed Nov 2 2016 A cold front will bring showers and isolated thunderstorms through the region tonight.
150 PM EDT Wed Nov 2 2016 The region is ahead of an approaching cold front tonight.
Moisture will increase ahead of an approaching cold front.
406 PM EDT Wed Nov 2 2016 High pressure will persist over the region through Thursday.
332 PM MDT Wed Nov 2 2016 Weak high pressure builds into the area today and, apart from a few showers and storms over the southern mountains, dry weather persists.
In the middle and upper levels (700-200 mb,latest available satelitte imagery overlaid with model streamline analysis as of 200 pm depicts a sharpening positively tilted full latitudinal trough oriented from North Dakota to Southern Arizona. Well east of that feature, the center of an unseasonably deep and warm anticyclone remains located over the Yucatan Channel, with the northern periphery of the ridging and associated jet stream pushing across Central Minnesota eastwards over the Northern Great Lakes to Northern Maine. The closest cold frontal boundary is situated from Lake Ontario west southwest to the Southern Plains. Temperatures across the islands have reached the lower to middle 80s with dewpoints in the upper 60s.
212 PM PDT Wed Nov 2 2016 Offshore flow will bring warmer temperatures to the region today and tomorrow and gusty winds will develop across Ventura and Los Angeles Counties.
309 PM EDT Wed Nov 2 2016 A cold front will stall over southern New England this evening. Weak low pressure will form along the front overnight and will move east through New England on Thursday. Low pressure will move out to sea Thursday night as high pressure builds in from the west.
217 PM MDT Wed Nov 2 2016 Upper flow over the CWA is northwesterly, with a weak wave pushing through the eastern Dakotas, ridging over the western CONUS, and a closed low over AZ. Upper level ridge will build over the western and central CONUS tonight into Thursday. Strong upper ridging will continue across the region through the end of the week.
306 PM EDT Wed Nov 2 2016 The region is ahead of an approaching cold front tonight.
1221 PM CDT Wed Nov 2 2016 Latest water vapor imagery and RAP 500 mb analysis shows southwesterly flow over the Central Plains with a ridge to our east and a trough axis extending from western Wyoming into western AZ. At the surface, low pressure was centered over the Texas Panhandle with a quasi-stationary front extending northeast across central and northeast Kansas, northwest Missouri and into far southeast Iowa.
Tonight Through Thursday High pressure will be over the area tonight and Thursday with dry conditions and a gradual warming trend. Thursday Night Through Wednesday Overall mid range to extended range forecast looks dry with high pressure. High pressure will be over the area tonight and Thursday with dry conditions and a gradual warming trend. Dry and warmer conditions are expected through the weekend.
338 PM CDT Wed Nov 2 2016 Afternoon water vapor imagery shows upper low across the southwest in the process of becoming a cutoff low. Surface cold front has moved little so far today. Short term guidance continues to show cold front arriving into NE OK early this evening accompanied by a scattered to broken line of showers/tstms.
117 PM EDT Wed Nov 2 2016 High pressure moving slowly to the east today will keep much of the region dry. Strong high pressure builds across the region into the weekend with quiet and cool weather expected. An upper level trough over the upper midwest today will deepen and drop to the se on Thursday. The broad large scale lift associated with the trough combined with deep moisture and a layer of enhanced mid level f-gen will produce widespread rain across much of central NY and ne PA. Temperatures will be a few degrees cooler on Thursday. The upper lvl trough axis will swing across the region Thurs night accompanied with gusty NW flow at mid-lvls.
a warm front extended from a low over southern Alberta eastward across southern Saskatchewan along the ND/Canada border and into northeastern ND. with temperatures in the 60s west - to the 40s in the Turtle Mountains just north of the warm front. The warm front is progged to continue lifting northward tonight and light southwest winds should be the rule for the overnight hours. On Thursday the building upper level ridge expands eastward into the front range and northern plains. It is important to note that there will be some minimum relative humidity values in the low to mid 20 percent range in the extreme southwest on Thursday.
At the surface, a cold front is located from eastern NM, northeast into the TX panhandle. The upper level low in the AZ area will move very little over the next 24 hours. As the cold front makes slow progress southward tonight, scattered showers and thunderstorms along the boundary will develop. Temperatures will be cooler on Thursday behind the front. (Thursday night through Wednesday) A large upper level low will be located over the northern Mexican state of Sonora, with a weak front in the vicinity of West Central Texas.
244 PM CDT Wed Nov 2 2016 Latest surface map showing the main low pressure center further west toward Kansas, with a secondary low starting to organize near Quincy. The warm front continues to arc just north of our forecast area roughly along the I-80 corridor, with the trailing cold front southwest through Kansas City. Clusters of thunderstorms have tracked across the northern and northeast CWA so far, with more widespread convection just ahead of the cold front and moving into west central Illinois, where CAPE's have increased to around 500-1000 J/kg. Clearing trend will push from northwest-southeast on Thursday as high pressure starts to build east from the Plains. Temperatures will be cooler than today, but still well above seasonal normals.
1206 PM PDT Wed Nov 2 2016 Weak high pressure will linger and confine the most substantial showers to the vicinity of the North Cascades and near the British Columbia border today.
141 PM EDT Wed Nov 2 2016 A cold front with a wave of low pressure moving along it approaches during the afternoon with showers and isolated embedded thunder. Showers will end across southeast portions of the area Thursday morning as the low and associated cold front move away from our area.
Ridge aloft begins to be displaced southward as trof aloft begins to deepen toward the eastern U.
Very little improvement is expected after sunrise Thursday as moisture pools ahead of an approaching cold front.
1031 AM PDT Wed Nov 2 2016 Weak high pressure will linger and confine any showers to the vicinity of the North Cascades and near the British Columbia border today.
231 PM PDT Wed Nov 2 2016 High pressure will bring drier weather the rest of the week with valley inversions and the potential for some early morning freezing fog in Sierra valleys as well as portions of the Basin and Range.
320 PM CDT Wed Nov 2 2016 The Southeast CONUS ridge will break down over the next 24 hours as a strong trough dives southeast across the Great Lakes. This has kept temperatures a bit cooler across the western half of the CWA, but locations in the east are currently near record values. Isolated showers, and a few thunderstorms, are expected to develop along and ahead of a cold front that will traverse the Mid-South during the day. Dry and cooler weather is anticipated over the weekend.
Cool high pressure will bring tranquil weather for the weekend. An upper level trough over the upper midwest today will deepen and drop to the se on Thursday. The broad large scale lift associated with the trough combined with deep moisture and a layer of enhanced mid level f-gen will produce widespread rain across much of central NY and ne PA. Temperatures will be a few degrees cooler on Thursday. The upper lvl trough axis will swing across the region Thurs night accompanied with gusty NW flow at mid-lvls.
It will also be a warm night with lows generally in the low to mid 60s.
342 PM EDT Wed Nov 2 2016 High pressure is holding on today, keeping the east northeasterly flow across the region. A ridge at 500mb also remains in place, which is hampering the showers from developing into anything significant. Over the next or so, the high will retrograde and weaken ahead of an approaching cold front.
416 PM EDT Wed Nov 2 2016 A cold front will move through the area late tonight into Thursday, bringing showers and possibly a thunderstorm, along with a transition to cooler conditions.
557 PM CDT Wed Nov 2 2016 Latest surface map showing the main low pressure center further west toward Kansas, with a secondary low starting to organize near Quincy. The warm front continues to arc just north of our forecast area roughly along the I-80 corridor, with the trailing cold front southwest through Kansas City. Clusters of thunderstorms have tracked across the northern and northeast CWA so far, with more widespread convection just ahead of the cold front and moving into west central Illinois, where CAPE's have increased to around 500-1000 J/kg. Clearing trend will push from northwest-southeast on Thursday as high pressure starts to build east from the Plains. Temperatures will be cooler than today, but still well above seasonal normals.
1142 AM MDT Wed Nov 2 2016 A weakening cold front and deformation zone will continue moving east across western CO today. The upper trough over Utah will continue splitting, with the southern portion of the split forming a closed 500 mb low over NW AZ this morning. This closed low will continue digging south and deepening, reaching the southern AZ border this afternoon. All the short range models show this low wrapping up over SW AZ and drawing moisture from TX and the Gulf of Mexico tonight and Thursday. Moisture from the Gulf of Mexico will wrap into the closed low over Arizona on Thursday, then shift northward toward the Four Corners.
618 PM EDT Wed Nov 2 2016 High pressure over the region will weaken Thursday as a cold front approaches the area. The cold front will move through the forecast area Thursday night. Cooler weather will occur behind the front over the weekend. Thin high level clouds will increase this evening as the upper level ridge begins to flatten and slip to the southwest. The models indicate considerable upper level moisture moving into the area from the west north of a flattening upper ridge. WV loop this afternoon shows the ridge of high pressure across the southeast. The ridging over the area will continue to weaken Thursday ahead of the approaching cold front.
The upper level low will remain situated across northern Mexico and southern AZ through the short-term. At the surface, a cold front across Northwest Texas will slide south into West and Central Texas tonight and Thursday. Given the highly anomalous precipitable water values some storms could produce locally heavy downpours across this region late Thursday afternoon and Thursday night, especially toward to Rio Grande where better upper level forcing is in concert with low level confluence.
250 PM CDT Wed Nov 2 2016 It's another unseasonably warm afternoon across Middle Tennessee under mostly sunny skies and weak ridging aloft. This means we should have a shot at warming into the low 80s once again tomorrow.
140 PM EDT Wed Nov 2 2016 Passage of a cold front early on Thursday will herald a return of more seasonable temperature to the Upper Ohio Valley Region. Behind the warm front, low level lapse rates are increasing late this morning into the afternoon. the aforementioned trough/associated surface front will rapidly increase precip probability as moisture flows through the frontal zone with support via increasing overall ascent and frontal convergence. Precip chances will fall abruptly on Thursday as the front shunts the moisture feed south and east of the region, although some showers will remain possible, especially over northern zones, until passage of the mid level trough axis on Thursday eve.
Cold front is currently draped across central KS with areas of MVFR cigs across much of eastern OK/northwest AR. with scattered activity eventually sagging southward through the night with the cold front. with better chances arriving this evening (mainly across northeast OK) as the cold front sags into the region.
Cool high pressure will bring tranquil weather for the weekend. The upper lvl trough axis will swing across the region Thurs night accompanied with gusty NW flow at mid-lvls.
1023 AM PDT Wed Nov 2 2016 Off shore flow will bring warmer temperatures to the region today and tomorrow and gusty winds will develop across Ventura and Los Angeles Counties. Overall today's highs should be 10-15 degrees warmer in the LA/Ventura valleys and 4-8 degrees warmer most other areas.
251 PM EDT Wed Nov 2 2016 A cold front crosses Thursday.
1136 AM MDT Wed Nov 2 2016 Predawn water vapor loop showed a upper trough from central MT through western WY, UT to the Desert Southwest. Upper trough to the west shifts east across the CWA today with cool dry northwest flow.
126 PM EDT THU MAY 19 2016 High pressure builds today giving a brief dry period.
343 PM PDT THU MAY 19 2016 Cooler than normal temperatures in store through the weekend, along with mostly cloudy skies and rain showers.
150 PM EDT THU MAY 19 2016 High pressure will provide dry weather through Friday with seasonable temperatures.
Models bring deeper moisture (2in PWATS) back to the north through Fri across mainly the southern CWA, therefore went with a 30 pop across the southern CWA by Fri afternoon as instability increases and another weak embedded short wave trough tracks across the area.
140 PM EDT THU MAY 19 2016 High pressure overhead will build to the east coast through Friday.
HIGH High pressure will bring mostly clear skies overnight after cumulus clouds dissipate by early evening. Cooler temps will persist near Lake Michigan.