Aikyam-Lab/Synoptic-Bench huggingface dataset:
405 PM EDT SAT JUL 9 2016 A ridge of high pressure will bring dry and pleasant weather to eastern Kentucky through the rest of the weekend. Temperatures through tomorrow should run right about normal for this time of year, with lows in the low to mid 60s the next two nights and highs in the low to mid 80s on Sunday. Deep layer ridging will start off the week downstream of an upper level low approaching the northern Plains into Saskatchewan/Manitoba.
529 PM MDT SAT JUL 9 2016 Water vapor shows upper ridge over the nrn Rockies beginning to shift into the nrn plains. Short wave moving through the ridge producing isold shra/tsra across nern WY and far SD. broad low pressure extends from sern MT through wrn SD. Even hotter temps expected with thermal ridge centered over wrn SD.
833 PM EDT SAT JUL 9 2016 Weak upper level ridging will give way to an approaching upper trough by Sunday while a weak surface boundary moves into the northern Midlands Sunday and washes out. The upper trough over the Ohio/Mississippi Valleys sinks further south into the lower Mississippi Valley with somewhat of a weak southwesterly flow aloft developing over the region on Sunday.
Wind gusts will be much stronger as the cold front works through the Great Basin. High pressure across the Desert Southwest will keep the region dry in the near term forecast period and beyond. A low pressure system moving onshore over the Pacific Northwest this weekend will significantly tighten the pressure gradient over the next 48 hours. In addition to the Red Flag Warnings already in place, have issued wind advisories for the Eastern Uinta Basin in NE Utah and the Lower and Central Yampa Basins in NW Colorado for Sunday afternoon and evening.
Once again the highest moisture content will be between 1000 to 950mb tonight and Sunday.
736 PM EDT SAT JUL 9 2016 Scattered thunderstorms, mainly east of Interstate 81, will gradually exit this evening with the passage of a cold front. The weather will turn cooler for Sunday with scattered rain showers lingering mainly in Central New York.
551 PM MDT SAT JUL 9 2016 Isolated thunderstorms will develop in northeast Colorado this afternoon along the lee trough. with the upper level ridge axis very close. Nearly zonal upper level flow with chances for rainfall and cooler temperatures. Sunday evening an upper level short wave trough will move over the west half of the Tri-State Area where the retreating dry line will be located. Late Sunday night a cold front will begin moving south through the Tri-State Area ahead of the primary upper level short wave trough over the Great Basin.
855 PM EDT Sat Jul 9 2016 A cold front will cross the region tonight.
/Issued 246 PM CDT SAT JUL 9 2016/ A NE-SW oriented mid level trough axis is sliding slowly south across the region today, on the eastern side of the ridge centered near the AZ/NM border. with the best chances in the east near the lingering mid level low/trough.
631 PM CDT SAT JUL 9 2016 140 PM CDT A quiet night ahead with 1018 mb high pressure to move over with the sky likely clearing by sundown. Even with that the 850-925mb temperatures will warm a couple degrees C from this afternoon and highs should result a tad warmer than today, with onshore flow still keeping lake adjacent areas in the 70s.
Below average temperatures and gusty winds are expected this weekend as a week upper lever trough moves through the region. Temperatures will rebound during the next work week as high pressure returns. Otherwise the day has been slightly cooler than normal with breezy conditions as an onshore flow prevails over Central CA. Meanwhile, an upper low pressure center off the WA coast near 47N/128W is poised to track east-southeast across the PAC NW tonight and Saturday with an associated upper trough pushing through CA on Sunday. The trough will bring a cooler airmass to our area on Sunday with daytime temperatures expected to plunge to 7-10 DEG F below seasonal normals.
536 PM MDT SAT JUL 9 2016 High pressure across the Desert Southwest will keep the region dry in the near term forecast period and beyond. A low pressure system moving onshore over the Pacific Northwest this weekend will significantly tighten the pressure gradient over the next 48 hours. In addition to the Red Flag Warnings already in place, have issued wind advisories for the Eastern Uinta Basin in NE Utah and the Lower and Central Yampa Basins in NW Colorado for Sunday afternoon and evening.
70/DD (Issued 254 PM CDT SAT JUL 9 2016) Northwest flow remains across the TN Valley, as an upper level low moves across the Great Lakes and strong upper level ridging builds to our west. At the surface, a cold front extended from New England, southwestward into the Ohio and central MS Valley. The cold front will remain over the area during the day Sunday, before lifting northward overnight.
252 AM MST Tue Feb 28 2017 Cold front will continue through the forecast area overnight and should clear it by 12z. Either way, surface temperatures will be above freezing and ground temperatures even warmer, so snow will likely be melting on contact.
Further north from our far southeast corner, today should see a break with weak surface ridging between systems. Tonight, the main upper trough starts to move into the Plains.
Tuesday, cold front will move south through the plains bringing relief from the fire danger to most areas of the plains. However, the area south of Highway 50 will be under the gun again in the afternoon before the cold front arrives. Some snow and rain will also work eastward across the high valleys to the eastern mountains and plains.
A cold front along with additional thunderstorms will swing through the area just beyond the scope of this TAF issuance. /Issued 948 PM CST Mon Feb 27 2017/ Isolated showers have recently re-developed near the Red River north of diffuse warm front, which still appears to be across north Texas per latest obs. The better chances of severe weather will come late Tuesday afternoon in the far eastern part of the forecast area and again later Tuesday evening to the southeast of Interstate 44 as the cold front moves across the area. Any storm that can get going late Tuesday afternoon will have the potential to produce all modes of severe weather, with damaging winds and perhaps an isolated tornado the main risk with the later storms along the cold front.
119 AM EST Tue Feb 28 2017 Ceilings and visbilities will gradually drop to MVFR levels by late morning and the afternoon at each terminal as light rain showers will move into the region with a northward advancing warm front.
A cold frontal passage Wednesday morning during the daylight hours will increase moderate chance.
Strong to severe thunderstorms are possible this upcoming night as a strong cold front approaches.
446 AM EST Tue Feb 28 2017 A warm southerly flow between offshore high pressure and an approaching cold front will continue through Wednesday. The cold front will move through the forecast area Wednesday night. Cooler conditions will follow the front for the end of the week. A weak warm front will bring low clouds and areas of fog early this morning. The temperature guidance was consistent with highs mainly in the lower 80s and just below records for the date. The main issues Wednesday will be windy conditions ahead of a cold front and possible severe thunderstorms late Wednesday afternoon and night. The models depict a strong low-level jet ahead of the cold front Wednesday with h85 winds 40 to 50 knots.
944 PM PST Mon Feb 27 2017 Moderate to locally heavy rain will continue across San Diego county and southeast portions of the Inland Empire this evening as a low pressure trough pulls a deep moist layer inland. Some snow will fall on the higher mountain peaks to the north as well.
The high clouds will retard surface warming a bit Tuesday, but any mixing will tap into stronger flow aloft by late morning. We are retaining the High Wind Watch. Also retaining a mention of light sprinkles northwest late in the day with approach of the upper trough and minor instability and mid level saturation. After the windy day on Tuesday, a cold front will drop through the area Wednesday morning.
Expect a lull in the convection for a time in the afternoon, but enhanced synoptic scale forcing from left exit region along with passing low level frontogenetical forcing associated with low pressure will result in another batch of convection later this afternoon into the evening. At this point expect activity to remain elevated, however with warm front flirting with far southeast corner of WI, possible one or two of the storms could become surface based and produce some damaging winds along with hail. Strengthening low pressure will move from IL/WI border into lower Michigan overnight tonight. Increasing north winds in its wake along with amplifying mid-level trof will pull colder air into southern WI later in the night.
Light snow showers are developing over the area this evening as a short wave trough dives southeast toward the region.
320 AM EST Tue Feb 28 2017 A warm southerly flow between offshore high pressure and an approaching cold front will continue through Wednesday. The cold front will move through the forecast area Wednesday night. Cooler conditions will follow the front for the end of the week. A weak warm front will bring low clouds and areas of fog early this morning. The temperature guidance was consistent with highs mainly in the lower 80s and just below records for the date. The main issues Wednesday will be windy conditions ahead of a cold front and possible severe thunderstorms late Wednesday afternoon and evening. The models depict a strong low-level jet ahead of the cold front Wednesday with h85 winds 40 to 50 knots.
A cold front is stalled from roughly Dallas to Alexandria to Mobile this afternoon. Temperatures in central LA just north of the front are in the 60s while across the East TX Lakes and South LA temps are in the low 80s to mid 70s. Tonight into tomorrow a stronger short wave will move across the Rockies allowing low pressure to form in the plains. This will swing a cold front through our region Wednesday.
456 AM EST Tue Feb 28 2017 High pressure will build across the region today. A warm front will lift across the region Wednesday.
1012 PM PST Mon Feb 27 2017 A trough of low pressure over the region will slowly move east through Tuesday.
Showery to rainy conditions will span west to east today and tonight as the upper trough moves through the region. Dry conditions and much warmer temperatures will return for the latter half of the week. This is all associated with a positively tilted trough that is just offshore and will be swinging through Arizona tonight and into tomorrow morning. HRRR indicates that there could be some heavier showers around Phoenix very early tomorrow morning as cooler air moves in aloft and destabilizes the atmosphere ever so slightly. Below normal temperatures will continue for tomorrow as the trough axis swings through. 5 inches over the higher terrain north and east of Phoenix, appear to be most likely at this point. A return to low-amplitude/broad ridging will occur later this week, and usher in a warming trend to above-normal temperatures.
Water temps are in the low 50s. A stong cold front stalled over central Oklahoma/central Texas will begin to move east late tonight and enter our area just after noon Wedensday. High pressure will move east over the weekend bringing return flow back to the area by the start of the week. 35 Winds over marine areas likely to remain near or below 15 knots until the passage of a strong cold front Wednesday night.
The first lobe of low pressure hammered the Palouse and central Idaho Panhandle during the evening hours. The second lobe of the low tracked just north of the metro area giving Deer Park, Newport, and Sandpoint bands of moderate snow. The low pressure center will track into western MT late tonight.
An Atlantic ridge of high pressure over the southeastern United States will gradually shift southward down the Florida peninsula today through Wednesday. This ridge of high pressure will retreat eastward Wednesday night.
Snow showers will be mainly light in the valleys and models indicate the stronger showers will be focused over the higher terrain in the coastal mountains and in the Cascades. Models continue to show that showers will decrease Tuesday as a weak ridge builds into the area from the west.
1207 AM EST Tue Feb 28 2017 A series of disturbances will keep periodic rain in the forecast through mid week until the passage of a cold front returns wintry weather for the last half of the week. Speed and directional shear will continue to increase as the cold front progresses southeast but models differ in the amount of instability progged to develop.
The evening will start out dry with weak ridging pushing off to the east. A warm front will move north through the area, bringing an increase in clouds and then chances for rain moving in after 1 am. With all the clouds and precipitation moving in low temperatures should remain relatively warm in the low to mid 40s. This combined with an upper wave and an approaching cold front should produce a line of thunderstorms moving across the area sometime in the 3-9z timeframe, give or take a few hours depending on the model.
Sustained to 35mph with gusts of 40-50mph are expected for the higher peaks of the central mountains and south central highlands. Behind today's storm, we will switch to northwest flow and a ridge building to our south.
Surface pressures were falling quickly over central Kansas with warmer air surging north. Deeper moisture with this warmer air keeping skies partly sunny, with enough depth of the moisture for a few showers to form in eastern areas. Cold air advection slowly works in, but should have enough clearing of the low cloud for a warmer day for most locations ahead of a cold front. Stay tuned for further updates! Strong longwave ridging will build over the western CONUS after this system pushes out by 12Z Wednesday.
Latest observational and regional sounding data suggests increasing elevated instability across much of the region with increasing elevated CAPE after midnight as a surface warm front across the Gulf Coast surges northward. A maritime warm front will lift into the Midsouth late tonight enhancing moist isentropic lift mainly along and north of the I-40 corridor. Following Wednesday morning's cold frontal passage, a dry and cool midcontinental airmass will spread into the Midsouth.
249 AM MST Tue Feb 28 2017 Snow has pretty much ended across the CWA early this morning and only some snow showers are now expected over the higher mtns mainly tonight through Wednesday night in a favorably moist northwesterly upper flow.
1209 AM CST Tue Feb 28 2017 For the 28/06Z TAFs, a range of ceilings covering our area TAF locations this evening with a warm front advancing northward into S AR and SE OK. Patchy fog may also develop in areas overnight, but increasing southerly winds will occur as the warm front shifts farther north through Tuesday so vsbys should improve and cigs will lift and scatter out during the afternoon with VFR returning.
115 AM EST Tue Feb 28 2017 High pressure will build across the region today. A warm front will lift across the region Wednesday.
Low level convergence into the low pressure center will also result in snow across the Coeur d'Alene Area, Northern Panhandle and Northeast Mtns with around 2 to 4 inches possible into Tuesday morning. The low will move into western MT during the morning hours on Tuesday. The low pressure center will track into western MT late tonight.
The main concern is still the strong cold front forecast to move across the CWA starting late Wednesday but most so Wednesday night.
The 7 pm regional surface analysis showed a cold front, formed mainly by widespread, strong evaporative cooling and cloudy skies this afternoon across central AL, MS, and GA, extended from Tifton, GA through Panama City, FL. In the upper levels, there was a short wave trough over our forecast area, moving quickly eastward in the nearly zonal flow over the Gulf Coast region. The western edge of the rain band associated with the stalling surface front and trough aloft was near the AL-GA border, and will likely exit our forecast area and/or diminish by 1 am EST. Zonal flow aloft and surface ridging will prevail through Tuesday night. At the surface, a cold front is expected to move through the Southeast Wednesday through Wednesday night.
1144 PM CST Mon Feb 27 2017 A slight chance for -sn remains in the forecast this evening for Sheridan county ahead of an upper trough moving across Wyoming. A cold front will also move into northwest Nebraska this evening, and push through the remainder of the forecast area overnight. The advancement of the cold front from the west will end the fog from west to east overnight, with no fog expected after 12z Tuesday. Cooler H85 temperatures behind the front from 0C to -5C will reduce highs Tuesday to the lower to mid 30s northwest, to near 40 across the southeast. Deep mixing will allow highs to reach the mid and upper 30s north central to lower 40s south, despite cooler H85 temps of -2C to -6C.
326 AM EST Tue Feb 28 2017 A series of disturbances will keep periodic rain in the forecast through tonight before a strong cold front results in gusty showers and thunderstorms Wednesday. Speed and directional shear are progged to continue to increase as the low's associated cold front approaches.
Otherwise, Winter Storm Warnings and Advisories continue for the higher elevations. A storm system will produce widespread MVFR conditions with areas of IFR/LIFR conditions, especially across the higher terrain.
A broad area of low pressure over the area will continue at least mountain top-obscuring snow in the mountains. another trof will move through the northern portions of the region. Expect gusty west winds to develop with this trof on Wednesday.
Speed and directional shear are progged to continue to increase as the low's associated cold front approaches.
After midnight winds are expected to veer to the northwest at 5 to 10 mph as a cold front approaches. Low temperatures generally in the low 20s west to low 30 east. The cold front moves through Tuesday morning with north winds increasing into the 15 to 25 mph range with some higher gusts during the late morning through afternoon hours. Moisture profiles are most supportive of precipitation reaching the surface in our west where low level moisture pooling is possible, while most locations are shown to have a dry layer in the lower levels of the atmosphere that would have to be overcome.
717 PM EDT Sun Sep 25 2016 Rain showers will accompany a strong cold front tonight into early Monday morning.
/This evening through Monday/ A cold front has been moving through Iowa today and has brought a switch to breezy westerly winds and drier air to the state. An upper level trough will pass across the region tonight and deepen into a closed low over the Great Lakes on Monday while an upper level ridge sharpens over the Rockies. This will put the Upper Midwest in a North to Northwest flow and with no real waves expected to top the ridge the forecast problem remains one of temperatures.
619 PM CDT SUN SEP 25 2016 Cold front now across extreme northwest Arkansas will continue to move southeastward, reaching southeast Arkansas between 06z and 09z. The surface and upper high pressure systems have moved east, and a cold front in northeast OK and south-central MO slow moves southeast.
318 PM CDT SUN SEP 25 2016 As high pressure moved out of the area today, a few showers wasted no time popping up on the Plateau. As a cold front moves into the mid state on Monday morning, showers and an isolated storm or two will move in from the west. which means temperatures may only reach the low 70s for those lucky folks. The I-65 Corridor and the Cumberland Plateau will have a chance to warm into the upper 70s and maybe even the low 80s for the Plateau before the front gets there.
Strong northwest winds will continue this afternoon southwest of deep low pressure across northeast Manitoba and western Ontario in the wake of a cold front entering northwest Minnesota.
916 PM EDT Sun Sep 25 2016 Showers and scattered thunderstorms can be expected with a Monday cold front. Fries A deepening mid level trough is projected to close over the Northern Great Lakes on Monday as it drives a cold front across the Upper Ohio.
424 PM MDT SUN SEP 25 2016 A gradual warming trend can be expected during the next few days as upper-level ridging continues to build into the region.
726 PM EDT Sun Sep 25 2016 Tranquil early fall weather will persist through Monday, as a large area of Canadian high pressure crosses the region.
Lowered lows just a bit into the lower 40s in the far western tier. Water vapor loop showing drying aloft wrapping around the upper low entering the Red River valley and have seen winds pick up a tad more with 40+ mph gusts and sustained winds 30 mph at a few sites around Grand Forks and fargo. Also will hang on to higher pops late aftn/early eve into the northern RRV and NW MN as another area of showers now dropping back southeast around the upper low across northeastern ND. Lows in the low-mid 40s tonight.
847 PM CDT SUN SEP 25 2016 A cold front is beginning to push into the Mid-South at this time. A cold front was located from western Illinois through western Arkansas and into east Texas. As the cold front moves east tonight reaching the forecast area overnight some thunderstorms may develop ahead of the front and moves into region. THe cold front will move out of the forecast area Monday morning with some more thunderstorms expected to develop near the front. Drier and cooler air will start to move into the region on Monday with highs ranging from the mid 70s to mid 80s. This will be some 15 degrees cooler than today. High pressure will start take control of the weather by Monday evening.
Models were in decent agreement with activity expected to continue through the night and redevelop along the prefontral trough axis by late tonight/early Monday morning. Considered raising temps along the MS river the low at GLH was 75 last night. Stratus may be a bigger concern in the GLH to GWO area Monday morning in association with a weak cold frontal passage, but confidence is low in this scenario. Expect additional SHRA/TSRA development Monday aftn ahead of the cold front.
/issued 847 PM CDT SUN SEP 25 2016/ A cold front is beginning to push into the Mid-South at this time. A cold front was located from western Illinois through western Arkansas and into east Texas. As the cold front moves east tonight reaching the forecast area overnight some thunderstorms may develop ahead of the front and moves into region. THe cold front will move out of the forecast area Monday morning with some more thunderstorms expected to develop near the front. Drier and cooler air will start to move into the region on Monday with highs ranging from the mid 70s to mid 80s. This will be some 15 degrees cooler than today. High pressure will start take control of the weather by Monday evening.
/issued 228 PM CDT SUN SEP 25 2016/ Strong cold front to bring an end to the rain and much cooler temps to the area. Cold front cont to push south through the area this afternoon with drier and cooler air filtering south in its wake.
1028 PM EDT SUN SEP 25 2016 An upper-level ridge will continue to build east across the region tonight then move off the coast Monday. A cold front moving into the area tonight will stall across the area Monday providing a focus for scattered showers and thunderstorms.
Anticipated cold front was moving slowly eastward through the MS Valley this evening. A cold front will move across the Mid State Monday with scattered -SHRA along and just behind the front.
Clear skies tonight and light winds will allow for some isolated ground fog in some areas but otherwise, cooler and drier conditions will prevail.
A persistent low pressure system will bring gusty winds into Monday, along with a chance of showers and thunderstorms through midweek. Expect cooler temperatures Monday, then daytime temperatures returning closer to normal late in the week. The other weather story will be the much cooler daytime temperatures for tomorrow.