Aikyam-Lab/Synoptic-Bench huggingface dataset:
Energy progged to move into the north-central gulf and sharpen existing trof and transition into a shear axis going into the new work- week.
149 AM EDT Sat Jun 17 2017 Weak high pressure just east of the area will shift east on the weekend as a cold front pushes east across the region Sunday and Sunday night.
1143 PM MDT Fri Jun 16 2017 High pressure persists with zonal flow across the southwestern US. As a weak trough passes north of us in Montana, Wyoming, and the Dakotas on Saturday, the pressure gradient will tighten slightly and help to surface stronger wind gusts (20 to 30 mph) across NE Utah and NW Colorado. In the wake of the passing trough, general winds will shift to northwesterly on Sunday as high pressure begins to amplify across the Southwest. Still looking like it will be possible for a shower or thunderstorm to develop over the San Juans on Sunday afternoon before high pressure shifts eastward to center over the Four Corners.
352 AM EDT Sat Jun 17 2017 Upper air pattern consists of a 500 mb ridge across the desert sw and troughing in the ern U. Temporary switch to cooler weather pattern in store late this weekend into early the upcoming week. Shear is weak with upper trough axis overhead but freezing levels will be lower. Thu into Fri, upper troughing moves from western Canada to Manitoba and northern Ontario. Most of the precip should be east of the area on Fri as the cold front sweeps instability/tsra out of the area with drier air returning.
There is some troughing in the eastern portion of the country with weak ridging in the western portion. The Nam, Gfs, and Sref appeared to be doing the best on the low level thermal field. The highest pops will occur from late this afternoon through mid evening before decreasing. Guidance continues to come in cooler and current blend supports that well and made no changes.
A cold front is set to come through late Saturday night, bringing a chance for showers and storms as well as cooler temperatures. After Sunday, the upper level ridge begins to build back in again.
We will get a break from the heat on Sunday thanks to a late night cold front Saturday night. You won't have trouble noticing the cold front as it pushes through as we could see sustained winds of 35mph with gusts near 50mph (mainly western zones) immediately behind the front.
A cold front will move through the area early in the work week bringing cooler and drier conditions. It will be muggy night with min temps ranging from about 60F over the northwest mountains, to about 70F across the Lower Susq Valley. After the lower clouds and fog go away, diurnally driven showers and thunderstorms are expected for form again, especially across the southern half of the state.
402 AM CDT Sat Jun 17 2017 A somewhat complex weather pattern in that the larger gulf region is near an upper level col separating troughing taking place to the north and inverted troughing out of the tropic zones to the south of the coast.
This afternoon, clouds and showers will decrease as high pressure starts to build into the region.
A cold front will advance into southeast KS by late afternoon/early evening. This activity should move into northern sections of the forecast area later Saturday night as the cold front sags farther south. The cold front.
621 AM EDT Mon Oct 23 2017 High pressure will continue to move east of the region through Today.
Closed upper low over the Ozarks continues to move quite slowly, with its low-level jet and associated precip shield still hung up over western Kentucky. However, POPs will remain in the high chance range for the balance of the day with the upper low and cold pool overhead.
321 AM CDT Mon Oct 23 2017 Water vapor satellite loop this morning at 0730Z showed the upper trough moving across the northern Plains. At the surface, a cold front extended from eastern North Dakota southwest into southern Wyoming while a pre-frontal trough was present across western Kansas into northeast Nebraska. A breezy and windy day is expected today in the wake of the cold front moving through this morning. Highs today will be in the 60s with lows tonight in the lower 40s. Progressively colder this week as a series of cold fronts push into the area. CAA remains in place into Tuesday with a highly amplified western ridge and eastern trough pattern in place.
Drier air surging into western Kansas behind the front will reinforce the dry air mass already in place across the high plains limiting instability. A cold front pushing through western Kansas early this morning will cap climbing temperatures earlier in the day today. Should see lows well down into the 30s(F) tonight with the lower 40s(F) possible in south central Kansas. Northwest flow regime across the High Plains will be couple with an upper trough across the upper Midwest phasing with the last system that exited Kansas yesterday, to form a closed low in the Ohio valley.
A trailing cold front will push northeast through Pennsylvania late today and tonight.
345 AM CDT Mon Oct 23 2017 A much quieter morning this morning with the cold front that triggered yesterday's weather currently along a Birmingham to Pensacola line. Upper low is near Memphis at this time. Some low clouds wrapping around upper low are noted on satellite over Mississippi, but most of the area is clear. Upper pattern is in the process of digging a deep trough into the eastern third of the country. We should see abundant sunshine across the area today with cooler temperatures than earlier in the weekend. Highs on Tuesday likely to be a few degrees cooler than today, but with the frontal passage, late afternoon and early evening temperatures could drop pretty quickly.
A deep low pressure system will shift northeast from the Mid South into the Eastern Great Lakes through the forecast period generating a relatively lengthy period of showers and even the possibility of an isolated thunderstorm.
Clear skies across interior NorCal under strengthening high pressure.
/issued 415 AM CDT Mon Oct 23 2017/ Early morning GOES water vapor imagery showed an upper low over the Midsouth, lifting slowly east. The upper low and associated clouds will lift out this afternoon, in time for the arrival of a reinforcing push of drier and cooler air this evening. This evening's cold frontal passage will occur as deep midlevel height falls occur, leading to the formation of a longwave trof over the eastern half of the U.
Amplifying high pressure expected over the region today, with generally dry and warming conditions. High pressure remains over the area through Tuesday continuing the warming trend and allowing temperatures to reach right around, or just above normal values.
358 AM PDT Mon Oct 23 2017 The long wave trough will exit the forecast area this morning and high pressure will begin to build in it's wake. Eventually a thermal trough will build up along the coast Tuesday morning. Have adjusted temperatures near Brookings, and along the majority of the coast, towards the highest guidance, which is showing 80 degrees for highs Tuesday.
302 AM MDT Mon Oct 23 2017 Sharp cold frontal boundary now seen clearly on radar tracking southward across the Wyoming and Nebraska plains. Heights rise aloft on Tuesday as the jet core shifts east and ridging builds over the intermountain west.
/17/ Latest Rap and Satellite imagery showed the closed upper low tracking across the Lower Mississippi Valley.
There could still be some isolated storms later this evening and overnight as the main forcing associated with the upstream trof approaches the area. This activity will likely fill in as the short wave trof tracks eastward, so will continue with high rain chances overnight. The cold front or wind shift should reach the AL/MS state line near midnight and the I-65 corridor around 3 am.
415 AM CDT Mon Oct 23 2017 Early morning GOES water vapor imagery showed an upper low over the Midsouth, lifting slowly east. The upper low and associated clouds will lift out this afternoon, in time for the arrival of a reinforcing push of drier and cooler air this evening. This evening's cold frontal passage will occur as deep midlevel height falls occur, leading to the formation of a longwave trof over the eastern half of the U.
Coulston Main update this evening was to cancel the High Wind Warning for areas west and south of Liberty, Chouteau, and Judith Basin Counties. Winds have decreased dramatically early this evening with the loss of daytime heating and the exit of the cold front from the area. In its wake, a high pressure ridge builds-in from the west through Tuesday. This pattern will allow surface winds to ease this evening as flow aloft weakens and the MSLP gradient relaxes in response to the aforementioned ridge. Will keep the high wind warning in place for now and let the evening shift reevaluate the situation later today. Dry weather is then expected area-wide Monday night and Tuesday as stabilizing high pressure gains firm control.
Precip will end with the cold frontal passage at the DHN/ECP terminals later this morning and at VLD this afternoon. This is ahead of a fairly potent upper level trough swinging through the MS Valley. This upper trough will continue to progress eastward today and take on more of a negative tilt. Strong forcing ahead of this trough in the tropical airmass has led to widespread rain with embedded thunderstorms across the area.
225 AM PDT Mon Oct 23 2017 Expect mild and dry conditions through the week as high pressure builds into the Pacific Northwest.
Tonight, a cold front will advance southeast across west central Nebraska. A blend of guidance plus bias correction suggests northwest winds at 15 to 30 mph with the higher speeds east of highway 83 across Ncntl Neb.
Under the influence of high pressure drier air will continue to move into the area. /issued 833 PM CDT Sun Oct 22 2017/ Skies continue to clear and isold shwrs continue to weaken, as high pressure builds into the region in the wake of the fropa.
340 AM CDT Mon Oct 23 2017 A cold front expected later this morning will keep the Panhandles cool through midweek.
The low will track northeastward today and will reach southern Michigan by 00z/7pm. Most models show deformation zone precip associated with the low persisting across east-central and southeast Illinois for much of the day, with areas along/west of the I-55 corridor gradually drying out by midday. As the trough approaches and amplifies, scattered showers will develop along/northwest of the Illinois River late this afternoon. Low temperatures tonight will drop into the lower to middle 40s. While low temperatures are expected to drop into the lower to middle 30s, think W/NW winds of 8-10mph will prevent frost formation. A series of short waves will drop southeastward out of Canada, re-enforcing the mean upper trough in place over the Great Lakes/Midwest through the remainder of the extended.
An upper level ridge positioned over the western U. Lighter winds are expected on Tuesday as the upstream ridge advances and extends further into eastern Montana. Expect warmer temperatures on Tuesday with the associated height rises as well.
341 AM CDT Mon Oct 23 2017 A cold front is presently pushing through the James River Valley very early this morning and should be through the entire CWA by 13Z. Otherwise, an upper level trough will deepen over the central CONUS today, and with cold air advection behind the aforementioned front, rapid surface pressure rises, and winds increasing to 40 to 50 kts at the top of the mixed layer, it will be a windy day. Even so, by later in the night winds will begin to increase again as the gradient tightens in response to a rapid intensification of low pressure over the Great Lakes area.
An upper level ridge of high pressure will continue to build north into the Pacific northwest today. Temperatures this afternoon will be anywhere from 7 to 10 degrees warmer compared to yesterday afternoon and between 5 and 10 degrees above normal for this time of year. continued warming is expected as the ridge amplifies into the middle of the week.
401 AM CDT Mon Oct 23 2017 A couple potent mid/upper troughs are in the vicinity of the forecast area this morning.
314 AM EDT Mon Oct 23 2017 Closed upper low over the Ozarks continues to move quite slowly, with its low-level jet and associated precip shield still hung up over western Kentucky. However, POPs will remain in the high chance range for the balance of the day with the upper low and cold pool overhead.
333 AM CDT Mon Oct 23 2017 A broad upper trough is over the Northern Plains and Upper Midwest and extends southward towards the Gulf Coast states. Winds will start to come around to the north today as a cold front approaches the area. On Tuesday, the upper trough deepens and shifts a little more to the east.
SHORT TERM (Now through Tuesday): Drier air continues to filter into the area early this morning in the wake of yesterday's cold front. Northerly flow will continue on Tuesday with a stronger high pressure system moving southward into Texas.
The low level thermal ridge will nose east over the region today ahead of a cold front. With the cooler low level temps not expected to arrive until closer to 00z, there may be enough time to warm up above consensus guidance and the forecast will lean that way. Winds aloft will increase considerably overhead as the upper jet dives south over the region on the back side of an amplifying upper trough over the Great Lakes and Mississippi valley.
The region will be under the influence of dry northwest flow aloft, as a deepening trough over the Mississippi River valley remains to our northeast. At the surface, an exiting high pressure system will keep the region under weak southerly flow throughout the day. A weak cold front will move through the area by mid afternoon, beginning in the Big Country, then moving to the south and east.
407 AM CDT Mon Oct 23 2017 The cold front that brought a few light showers, and brief gusty winds, has shifted east of the area. Behind the exiting cold front, and as mixing increases, windy conditions will develop this morning, and continue through the afternoon hours, before diminishing around sunset. Grassland fire danger index will rise into the high to very high categories over the eastern two-thirds of the forecast area today as RH values fall to 25 to 40 percent. The lowest humidity is expected west of the Missouri River. We will be stuck between exiting/deepening low pressure setting up over the Great Lakes, and strong high pressure over the Pacific Northwest.
250 AM CDT Mon Oct 23 2017 A cold front currently over northern Neb will rapidly drop south across the forecast area during the morning hours. Tonight-Wed: This secondary shot of cooler air will lead to slightly cooler than normal temps for tonight through Tue.
349 AM CDT Mon Oct 23 2017 We expect cold air advection and strong winds across the entire area today behind a cold front. Despite the cold air advection, strong mixing will allow highs to climb close to where they were yesterday or generally about 5 degrees cooler than yesterday on average.
1228 AM CDT Mon Oct 23 2017 Clouds and light rain/drizzle are hanging on over the eastern cwfa underneath an upper low that is closing off over the region. Looks dry Monday despite the passage of the trough. Western CONUS/east Pacific upper level ridging with a downstream trough will keep the region in nw flow aloft.
Gusty winds were noted over Corson county this evening, but the winds appear to have abated as the lower atmosphere moistens up due to diurnal cooling. An upper level wave and surface cold front will be moving across the CWA overnight. Temperatures will be cooler on Monday as well, with highs back down into the 50s for most areas.
231 AM CDT Mon Oct 23 2017 An upper level low was essentially parked over SC Missouri and NC Arkansas this morning. A very sharp clearing line near US Highway 65 will slowly move east this morning as the upper low begins its slow departure. As slow as this low is moving it may take much of the morning to clear out in the Eastern Ozarks. Winds will begin to increase and veer to the west and southwest Today ahead of an approaching cold front. The dry cold front looks to come through during the afternoon. Issued at 215 CDT Mon Oct 23 2017 The overall synoptic pattern the rest of the week into the weekend is a dry northwest flow with upper level troughs moving through every few days.
Strong high pressure will generally prevail throughout the upcoming week, resulting in mostly clear and mild conditions outside of night and morning valley fog.
Surface cold front will pass terminals mid to late Monday morning. VFR will persist through the TAF cycle though a weak cold front with a northerly to northeasterly wind shift will move through the terminals between 14-17Z Monday. /issued 334 PM CDT Sun Oct 22 2017/ Dry northwest flow will be the theme for the majority of this work week in response to persistent longwave ridging slowly amplifying along the Pacific coast.
455 AM CDT Mon Oct 23 2017 Strong winds will develop today as a cold front pushes through the region. A very powerful storm system will develop over the next 36 hours across the Great Lakes region as a broad upper level trough with a textbook PV signature merges with a cutoff low over the Tennessee River Valley.
301 AM PDT Mon Oct 23 2017 The long wave trough will exit the forecast area this morning and high pressure will begin to build in it's wake. Eventually a thermal trough will build up along the coast Tuesday morning. Have adjusted temperatures near Brookings, and along the majority of the coast, towards the highest guidance, which is showing 80 degrees for highs Tuesday.
654 AM EDT Mon Oct 23 2017 Copious moisture associated with a cold front and wave of low pressure will bring showers today and tonight.
The low slowly pulls away Tuesday evening with POPS becoming trimmed to the eastern CWA.
357 AM EDT Mon Oct 23 2017 High pressure will continue to move east of the region through Today.
303 AM PDT Mon Oct 23 2017 High pressure continues to build across the region through midweek. A strong ridge of high pressure will continue to build over the west coast through midweek. As dry and warmer air moves in aloft daytime high temperatures will rise to 10-15 degrees above seasonal averages with moderately strong overnight temperature inversions.
This is ahead of a fairly potent upper level trough swinging through the MS Valley. This upper trough will continue to progress eastward today and take on more of a negative tilt. Strong forcing ahead of this trough in the tropical airmass has led to widespread rain with embedded thunderstorms across the area.
301 AM MDT Mon Oct 23 2017 Low amplitude trough sits across the central to western CONUS with a strong wave pushing across the northern Rockies into the northern Plains.
426 AM EDT Mon Oct 23 2017 Copious moisture associated with a cold front and wave of low pressure will bring showers today and tonight.
302 AM EDT Mon Oct 23 2017 Low pressure over the Mississippi Valley will track northward through the Great Lakes late Monday and Tuesday. A trailing cold front will push through Pennsylvania Monday night into early Tuesday.
1117 PM MDT Sun Oct 22 2017 Current surface analysis shows low pressure over southeast SK, with lee-side trough extending southeast across eastern MT and into the Black Hills area. Canadian cold front extends across central and western MT. Cooler weather will return for the first part of the week as the cold front slides through the forecast area tonight. A tight pressure gradient will develop between the passing front and high pressure over the Pacific NW. Highs will be in the 50s and lower 60s across much of the area, with 40s over the higher Black Hills. Tuesday looks to be slightly warmer for most areas, with highs close to average.
533 AM CDT Mon Oct 23 2017 A couple potent mid/upper troughs are in the vicinity of the forecast area this morning.
High pressure will build over the southwest through mid-week with above average high temperatures.
1103 PM MDT Sun Oct 22 2017 A Pacific low pressure trough and cold front will bring widespread snow to the western mountains this evening tapering off through the night. Behind the cold front strong north winds will blow on Monday across northern Johnson county. Temperatures will cool on Monday behind a cold front with decreasing winds. Dry and warmer conditions are then expected through mid week with lighter winds as a large high pressure ridge builds over the western U.
346 AM CDT Mon Oct 23 2017 Main concerns in this forecast cycle are cooler temperatures, elevated winds ahead of and behind the cold front, while an overall dry forecast. Currently the upper low pressure center continues to spin over northeast AR, while rotating clouds and some light rain or sprinkles over northern AR. The cooler and dry air mass was filtering in over AR, with dewpoint temperatures in the 40s to lower 50s, while temperatures in a similar range.
High pressure rebuilds through the middle of the week.
/Issued 241 PM CDT Sun Oct 22 2017/ Have gone a little on the low side of guidance for tonight's lows. Have gone with the stronger winds and cooler temperatures from the MET guidance as the Panhandles will be placed in the right front quad of the upper jet. Plus the upper level disturbance intensifies into a closed low, so this will help to bring colder air southward into the area. Speaking of colder air, another strong short wave trough is expected to swing southeastward out of Canada and into the central U.
Main concerns are thunderstorms ahead of front which is moving into the lower Acadiana region. High pressure will build over the area tonight and Monday. Cooler and drier weather is expected with low temperatures possibly dropping into the 40s across east Texas and central Louisiana.
High temperatures inland will be near 90, and cooler at the beaches.
/Issued 408 AM CDT Sun Apr 30 2017/ Deep upper level low centered over extreme northwest OK will continue to lift northeast today.
High pressure will bring clear skies, dry conditions and a strong warming trend through the upcoming week. We did see a few spots across the lower valleys of Santa Cruz and Cochise County dip near to slightly below the freezing point this morning.
an upper level low located over Northwest Oklahoma and Southwest Kansas continued to lift northeast into the Central Plains. an associated cold front had swept through Eastern Oklahoma and Northwest Arkansas. cooler temperatures with mostly cloudy and breezy southwesterly winds were observed over the region. the upper low is progged to lift into Eastern Kansas. some scattered light rain showers could push back into the CWA as the upper low moves through the region. Wind gusts should continue to increase across the region as the upper low moves through the region this afternoon and remain breezy into the overnight hours before the upper level trof axis pushes off to the east.
1023 AM CDT Sun Apr 30 2017 The forecast has been updated to remove precipitation chances across the Highway 77 corridor. Winds across Llano, Burnet and Williamson counties may briefly approach the lower end of wind advisory criteria (sustained 26 mph) today. /12Z TAFS/ Isolated showers and thunderstorms behind the cold front have ended at all sites, but VCTS has been carried at AUS through 1215 UTC as the last few storms pass southeast of its terminal. Today's main aviation impact will be west-northwest winds gusting to 25 knots for the morning and early afternoon until the pressure gradient relaxes later this afternoon and winds become relatively calm tonight as high pressure moves overhead. Showers and thunderstorms with the strongest producing small hail continued ahead of an upper level trough axis early this morning.