Aikyam-Lab/Synoptic-Bench huggingface dataset:
341 PM CST Sun Feb 9 2020 At 3 PM, the low pressure area responsible for the 8 to 11" snow band along the Interstate 90 corridor today was located east of the Wisconsin Dells. The highest snow total (10. With there being a few reports of a light wintry mix and the models showing that the lift would be rapidly weakening this afternoon, opted to mention some patchy freezing drizzle in a Special Weather Statement which is in effect until 6 PM tonight. On Monday afternoon, the clouds will gradually increase as a Canadian cold front approaches the area from northern and western Minnesota. On Monday night, scattered flurries will be possible as a cold front moves through the region.
A cold front will continue to push south through the region this evening causing winds to shift around to the northeast and become elevated near 15 kts with higher gusts, especially at HOB and MAF. A cold front currently moving south through the Panhandle has entered the Permian Basin with a passage through much of the region expected this afternoon and evening. A slight chance of freezing rain will exist in our far northwest Permian Basin and northern Lea county areas in the morning at precip onset with temps hovering around freezing to begin the day.
704 PM EST Sun Feb 9 2020 A fast moving low pressure system will pass north of the region tonight and Monday, bringing light accumulations to the northern mountains before transitioning to plain rain by early Monday.
As the high moves offshore moisture will again begin increasing as southerly flow overspreads the region ahead of the next frontal system.
One possible concern is freezing of road surfaces after dark as temperatures drop. Scattered snow showers will continue over the higher terrain tomorrow, with more numerous snow showers across the south with light accumulations possible. During this time period, a closed low forms over California overnight and drops slowly over Baja California by late Monday afternoon.
Weak coastal troughing will keep winds slightly elevated overnight along coastal locations. Highs tomorrow range from the the mid 70s along the Atlantic coast to the low 80s inland northeast Florida. Upper level clouds begin to increase tomorrow ahead of an approaching cold front moving through the southeastern CONUS.
432 PM EST Sun Feb 9 2020 Low pressure will bring rain and snow chances north of interstate 70 tonight, with widespread rain expected by morning, and tapering off thereafter. Despite this, there will be a few hour window, roughly between 00z-06z, within this warm frontal band where deep moisture and strong lift will allow for a quick few inch snow accumulation in the I-80 corridor, though remaining below advisory levels. Rain will spread areawide along and behind the advancing sfc cold front areawide through the Monday morning. The sfc front will stall across northern WV Monday night as it becomes farther displaced from the low center and upper trough. To the north, high pressure will build in and bring a return to drier conditions.
Cold front has cleared the entire area this afternoon. There is a small window early in the morning where near freezing surface temperatures may overlap with light precipitation leading to the potential for some freezing rain. However, since surface temperatures should be near freezing expect road temperatures to remain above freezing and hence overall impacts should be limited. Elevated surfaces that may cool to below freezing may see some slick spots though so motorists should still use caution.
sided with the lower end of guidance for lows tonight. expect a decent winter day across the region with light winds and mostly sunny skies making the slightly warmer than normal temperatures feel seasonably nice.
At 3 PM, the low pressure area responsible for the 8 to 11" snow band along the Interstate 90 corridor today was located east of the Wisconsin Dells. The highest snow total (10. With there being a few reports of a light wintry mix and the models showing that the lift would be rapidly weakening this afternoon, opted to mention some patchy freezing drizzle in a Special Weather Statement which is in effect until 6 PM tonight. On Monday afternoon, the clouds will gradually increase as a Canadian cold front approaches the area from northern and western Minnesota. On Monday night, scattered flurries will be possible as a cold front moves through the region.
There is a wide range of flying conditions across eastern Oklahoma and western Arkansas this evening as a cold front continues to work across the area. VFR conditions will become more common behind the cold front across northeast Oklahoma Tonight with MVFR and even IFR conditions found across the remainder of the sites Tonight. /Issued 258 PM CST Sun Feb 9 2020/ Cold front has pushed into parts of northeast OK, and we're finally seeing an increase in showers across the region.
An area of low pressure centered well south of the Northland will continue to move east and high pressure will build in behind it.
402 PM MST Sun Feb 9 2020 WV imagery this afternoon shows an elongated, positively tilted trof extending from CA newd into the nrn Plains. A potent upper- level jet is evident on the upstream side of the trof, along with a somewhat disorganized vort max centered near the AB/SK border. As cooler midlevel air arrives tomorrow, could also see the development of some lapse rate driven snow showers during the aftn/eve over much of wrn SD.
Northwest winds will become gusty overnight as low pressure moves east of the area. Gusty northwest winds are expected across the lake tonight as low pressure moves into and through southern Lower Michigan.
354 PM MST Sun Feb 9 2020 Latest upper air analysis shows split flow with a deepening trough over the West Coast extending southwest from the rest of the trough over the Northern Plains. Due to the CAA today, lows will be cooler than last night. Monday night the upper level trough that is currently over the West Coast will move onto the Southern Plains. As it does so the northern edge of the trough will graze the southern part of the forecast area.
630 PM EST Sun Feb 9 2020 A fast moving low pressure system will pass north of the region tonight and Monday, bringing light accumulations to the northern mountains before transitioning to plain rain by early Monday.
A strong ridge centered over the northeast Pacific Ocean is dominating the flow in the northern Rockies region.
Main concern overnight and Monday are cloud trends and small chance for snow with next short wave/cold front moving through into Monday night. Southern stream remains active moving southwest CONUS trough east over the mid Mississippi River Valley into Midweek.
SE winds of 10-15 knots will continue through the evening hours and as the low level jet begins to strengthen some non-convective low level winds shear will be possible, particularly at KAEX. with low pressure frontal trough over W TX/OK/E KS this morning.
705 PM MST Sun Feb 9 2020 Latest WYDOT webcams across the Summit and Vedauwoo showing areas of dense freezing fog along with visibility measurements of under a quarter mile. Went ahead with a freezing fog advisory till 1 AM for the WYZ116. Early afternoon WV/IR imagery revealed a split flow pattern aloft, with a southern stream cutoff low over central CA and progressive northern stream trough from the Upper Midwest to the central Rocky Mountain region. Surface cold front extended from central IA through southeast KS, central OK to eastern NM. Next Alberta clipper and associated cold front is forecast to quickly move to the southeast across MT, WY and the Dakotas Monday. High temperatures Monday will be a few degrees milder for the high plains compared to Sunday.
604 PM CST Sun Feb 9 2020 (This evening through Monday) The cold front has now moved into OK county as of 130 PM. Much colder temperatures will follow the cold front for Monday. Some brief freezing rain can't be ruled out over the extreme west through Mon morning but for now it appears not even a glaze will be possible.
310 PM CST Sun Feb 9 2020 An area of low pressure centered well south of the Northland will continue to move east and high pressure will build in behind it.
Forecast confidence is high: High pressure will bring a return of mostly sunny skies today, with high temperatures right about normal for this time of the year.
Weak trough works through the area Monday evening and may see a few flurries across southwest Minnesota. Cooler air works into the region Monday night behind the trough, but temperatures quickly rebound on Tuesday.
953 PM MST Sun Feb 9 2020 WV imagery this afternoon shows an elongated, positively tilted trof extending from CA newd into the nrn Plains. A potent upper- level jet is evident on the upstream side of the trof, along with a somewhat disorganized vort max centered near the AB/SK border. As cooler midlevel air arrives tomorrow, could also see the development of some lapse rate driven snow showers during the aftn/eve over much of wrn SD. Relatively quiet on Tuesday with DNVA in the wake of the trof. Next appreciable trof crosses the nrn U.
Models in fairly good agreement pushing heavy rain south and east of the mid-state Tue morning and that will gives us a break from widespread heavy rain Tue into early Tue night as warm front remains well south. Closed upper low over the southwest US opens and accelerates east, pushing into the nations mid-section Wed night. This will initially drag a warm front across Wed afternoon, then a trailing cold front late Wed night. We will be drying out Thu as upper trough passes.
112 AM EST Mon Feb 10 2020 A weak low pressure will bring widespread rain throughout the morning, and tapering off thereafter. Rain will spread areawide along and behind the advancing sfc cold front this morning. The sfc front will stall across northern WV Monday night as it becomes farther displaced from the low center and upper trough. To the north, high pressure will build in and bring a return to drier conditions. High pressure and drier flow aloft will quickly shift this feature east, returning dry conditions to the region by Tuesday night.
356 AM EST Mon Feb 10 2020 Areas of fog are expected to diminish later this morning as a cold front drops across the area.
1029 PM EST Sun Feb 9 2020 An upper-level composite analysis this evening reveals a deep layer mean anticyclone centered over the western Caribbean Sea, with a ridge extending northward over the Gulf of Mexico basin and southeastern United States. This system supports an expanding and intensifying surface anticyclone centered over the western North Atlantic. Heavier rain showers likely will not develop north of the reef tract, and any that manage to make it across likely will weaken over cooler sea surface temperatures and beneath drier air aloft. ENE breezes have freshened, as expected, and according to a recent scatterometer pass with great coverage over our service area currently range from 15-20 knots over some of the cooler Bay/Gulf waters north of the Florida Keys, to nearly 30 knots in a few spots across the Gulf Stream/Straits of Florida.
High pressure will remain centered just offshore Monday. Upper level ridging will keep the clear and dry conditions in place over the area again for tonight and at least all of Monday. leading to another chilly morning with the prospect of fog/freezing fog tomorrow and mostly sunny skies with high temps generally in the mid to upper 40s for most lowland locations.
1158 PM CST Sun Feb 9 2020 The entire period will be dominated by IFR conditions with periods of LIFR as a cold front slowly pushes south into the region. The cold front will be around the I-30 corridor at the end of the period with the end of thunder beginning from west to east.
This precipitation is occurring along a cold front which is slowly pushing southeast.
Latest WYDOT webcams across the Summit and Vedauwoo showing areas of dense freezing fog along with visibility measurements of under a quarter mile. Went ahead with a freezing fog advisory till 1 AM for the WYZ116. Early afternoon WV/IR imagery revealed a split flow pattern aloft, with a southern stream cutoff low over central CA and progressive northern stream trough from the Upper Midwest to the central Rocky Mountain region. Surface cold front extended from central IA through southeast KS, central OK to eastern NM. Next Alberta clipper and associated cold front is forecast to quickly move to the southeast across MT, WY and the Dakotas Monday.
Surface analysis places a surface cold front across southeast Missouri, north-central Arkansas & extreme southeast Oklahoma, just northwest of the Mid-South. Surface observations show cold front over southeastern Kansas to Missouri, which is expected to drop into eastern Arkansas by late tonight into tomorrow morning.
As the high moves offshore moisture will again begin increasing as southerly flow overspreads the region ahead of the next frontal system. High pressure centered offshore will ridge into the area today.
The question remains is, will the rain hold off until temperatures in this area get above freezing or not. The moisture will be fighting some dry air initially, but believe there is still a small chance that some of the precipitation could fall as freezing rain or sleet for a brief time in the southeast Texas Panhandle between late morning and early afternoon.
A cold front continues to progress south through the area and should reach FST in the next few hours. A cold front currently moving south through the Panhandle has entered the Permian Basin with a passage through much of the region expected this afternoon and evening. A slight chance of freezing rain will exist in our far northwest Permian Basin and northern Lea county areas in the morning at precip onset with temps hovering around freezing to begin the day.
VFR conditions prevail Tonight across northeast Oklahoma behind a cold front that is currently across extreme southeast Oklahoma. Cold front currently from far NW AR into SE OK and making steady progress southeastward with sustained region of pressure rises noted upstream.
Monday and Tuesday High pressure drifted over the region last night, keeping skies clear north of I-80 and allowing temperatures to drop into the teens and lower 20s.
Gusty winds and clouds will continue to diminish tonight as high pressure builds into the area.
Have kept the wind advisory going for northern Nye County as winds over some of the higher terrain remains gusty, though winds in many valley areas have subsided below advisory levels.
Upper ridge mostly over the central and lower Gulf stretching east to central and southern FL will continue to remain mostly stationary through tonight. Highs Mon will range from the lower to middle 70s for most inland areas and the upper 60s to lower 70s along the immediate coast.
/ISSUED 959 PM CST Sun Feb 9 2020/ Conditions will turn from warm and humid to cooler and continued damp through the middle of the work week. One is the presence of a north central Texas jet along with a 35-45 kt low level jet traveling across the far north-northeast CWA ahead of an approaching cold front. The bulk of the rain, along with thunderstorms, will focus ahead and along of the passing cold front that will slowly sag southeastward across the region during the day tomorrow. The front should slowly stall over the central or southern forecast area tomorrow night due to the lack of any backing (northern) high pressure push. Despite the stout onshore winds, patchy interior fog (3-6 SM) still exists simply due to the saturation of the lower 2k ft layer.
258 AM EST Mon Feb 10 2020 Synopsis/Discussion/Marine High pressure will build in today.
Cold front currently from far NW AR into SE OK and making steady progress southeastward with sustained region of pressure rises noted upstream.
951 PM MST Sun Feb 9 2020 Latest upper air analysis shows split flow with a deepening trough over the West Coast extending southwest from the rest of the trough over the Northern Plains. Due to the CAA today, lows will be cooler than last night. Monday night the upper level trough that is currently over the West Coast will move onto the Southern Plains. As it does so the northern edge of the trough will graze the southern part of the forecast area.
This should help keep some mid slope areas a tad warmer than previously forecast. Andrews NC was already at the freezing mark because of this, though that reading might come up a bit as high clouds increase the rest of the night.
A push of drier air from the north, diurnal mixing and difluent flow will offer the potential for some partial to perhaps full clearing of the low clouds across the Saginaw Valley and Flint areas this afternoon. A mid level trough axis will traverse Lower Mi on Tuesday.
Another low pressure system is expected to affect the area during the middle parts of the week. High pressure will build in behind this system for the later portions of the week. Radar indicates fairly widespread rain continues across the area, while the surface cold front looks to be about half way through the forecast area. Short term model guidance suggests cold front should clear the far southeast zones around sunrise. Not expecting much in the way of accumulations if this happens with surface temperatures above freezing.
/NEW/ /Today and Tonight/ A cold front was moving through the Dallas/Fort Worth Metroplex at midnight and will continue moving through Central and East Texas this morning. The break in the rain chances elsewhere will be short-lived as the cut-off low over Baja sends a spoke of energy across the Lone Star State. The overnight cold front will not bring an end to the rain chances, with multiple rounds of rain expected through midweek. Although VFR is just northwest of the Metroplex, the low-level trajectories will maintain a moist fetch within the frontal layer. Heavier bouts of precipitation may result in temporary reductions in visibility, but the lowered ceilings will be more persistent.
An area of high pressure at the surface will build across western Kansas over the next 24 hours as an upper level low weakens as it moves from Baja California into southern Arizona. An upper level wave embedded in the southwest flow ahead of his upper level low/trough will approach southwest Kansas later today. The upper level trough that will be crossing Arizona and New Mexico on Tuesday will begin to move northeast across west Texas towards central Kansas late Tuesday night.
ERVIN High pressure will provide the area with quiet and seasonal conditions Tuesday with highs in the upper 20s and 30s.
1054 PM CST Sun Feb 9 2020 (This evening through Monday) The cold front has now moved into OK county as of 130 PM. Much colder temperatures will follow the cold front for Monday. Some brief freezing rain can't be ruled out over the extreme west through Mon morning but for now it appears not even a glaze will be possible.
1046 PM CST Sun Feb 9 2020 Water vapor imagery shows an elongated trough moving across the northern Plains, trailing southwestward into the Intermountain West. At the western end of this trough is the strong wave that was over the Pacific Northwest yesterday. This elongated trough will mostly shear apart tonight into tomorrow with the southwestern appendage cutting off over southern California/ northern Baja. For Monday and Tuesday, dry weather with near normal temperatures can be expected as high pressure builds through the middle of the country.
The 19Z MSAS surface analysis showed low pressure over east- central IA with an inverted trough extended northeast from the low into east-central WI. An area of high pressure was situated over the northern Plains with clearing skies already starting to push into extreme northwest WI. Otherwise, high pressure is forecast to build into WI overnight, allowing for skies to gradually become mostly clear. As the high pressure slides to our east on Monday, winds will become southwest over the area with mostly sunny skies for most of the day. Later in the day, there will be an increase in clouds toward central WI in advance of a cold front over the Upper MS Valley.
High pressure and colder temperatures settle across the region through Tuesday.
Dry and tranquil conditions are likely through the period as a west-southwest flow aloft prevails across the Western High Plains while much drier air surges into western Kansas in wake of a strong cold frontal passage this morning. Look for lows down into the teens(F) in west central Kansas to the lower/mid 20s(F) in south central Kansas as winds subside becoming light and variable overnight. Expect highs pushing the lower/mid 40s(F) Monday afternoon. Precip chances return to western Kansas Monday night into early Tuesday as an amplified upper level trough begins to shift slowly east across the Desert Southwest, creating an increasingly difluent and intensifying southwest flow across the Western High Plains. Considering weak QPF signals, going snow amounts may be a little on the high side for extreme southwest Kansas.
1054 PM EST Sun Feb 9 2020 Low pressure will track north of Pennsylvania tonight, then the trailing cold front will slowly settle south across the region Monday and Tuesday.
436 AM EST Mon Feb 10 2020 Rain can be expected today as a slow moving cold front crosses the region.
410 AM MST Mon Feb 10 2020 Latest upper air analysis coupled with water vapor imagery depicts a positively-tilted trough across the Northern Rockies with a southern stream, closed low meandering off the southern California coast. As the trough axis pivots through, cold air aloft (500 mb temps 35 to 40C below) will result in relatively steep lapse rates across the region. Broad lift with the passage of the trough and surface front/trough coupled with these lapse rates will yield isolated areas of convective snow showers.
A low pressure system will bring rain and mountain snow chances to mainly the southern Mojave Desert and Northwest Arizona through tonight. In addition, cooler temperatures and gusty north winds can be expected.
Expect the severe threat to ebb further this morning, as the low level jet weakens and lifts off to the east. a surface cold front will drop to the I-40 corridor by midday, and then on to central MS to north AL by midevening. The diurnal weakening of the low level jet and southward sag of the cold front should provide some relief from heavy rains Tuesday morning through midafternoon Tuesday. Thereafter, height falls to the west will tend to regenerate the low level jet and expect new storms to arrive from the southwest late Tuesday afternoon and evening.
430 AM EST Mon Feb 10 2020 Temperatures are in the lower to mid 70s this morning across the Florida Keys with dew points in the upper 60s. Synoptic conditions favor anticyclonic flow - composed of low-level ridging centered to our east and mid- to upper-level ridging to our southwest. Another ribbon of moisture within the low-level southeasterlies is poised to cross the Straits and Keys beginning this morning, bringing a final limited round of isolated showers today.
Southwesterly flow aloft was present across the Plains with an upper trough located near Baja California. Northerly winds will remain light today, keeping CAA to a minimum with highs expected to be in the lower 40s, near normal for this time of year. This evening, an upper level jet is progged to strengthen as it moves around the base of the upper trough. While the upper levels are expected to be saturated, a lack of moisture at the low levels looks to hinder any chance for precipitation tonight.
A slow moving cold front across the OH to Lower MS valleys will drift toward the area through tonight and then drift into the area on Tuesday.