Aikyam-Lab/Synoptic-Bench huggingface dataset:
521 AM MDT Fri May 8 2020 Current surface map places high pressure across the western Dakotas. Thermal profiles support snow in the higher elevations of the Black Hills.
An area of high pressure over the region is producing cool temperatures this morning with 8Z temps in the 30s. The high pressure will slowly drift eastward across the region today, bringing light winds and cool temperatures. The winds, along with warmer temperatures should limit the frost potential tonight. The latest model runs are several hours slower with the progression of the low pressure system with pcpn not reaching this CWA until closer to 12Z Saturday. Gusty northwesterly winds can be expected behind the low pressure with gusty possibly reaching advisory levels over the western CWA.
An upper level ridge of high pressure will continue to build into the Pacific Northwest and strengthen through the period. This morning will still see some brisk temps, with lows in the 30s and some spots below freezing, before most locations warming into the 40s the next few nights.
A few of the coldest plains spots could hit freezing, but most places will keep a little wind and the general environment will be warmer.
Rain will taper off late this afternoon and early this evening behind a departing cold front. Brisk, gusty northwest winds will bring much colder air into the region as Canadian high pressure settles southward into the Ozarks. After midnight the high will build eastward and cause winds to become light. ranging up to around freezing in the Bowling Green area. Saturday night begins with high pressure over the region.
308 PM CDT Fri May 8 2020 Clouds will move in toward morning as low pressure begins to affect the region. High pressure will build in behind the precip Saturday evening with drier mid-level air.
A cold front was also draped along the I-70 corridor. High pressure will build into the Midwest tonight, with the center of the high sliding southward just west of the Mississippi River.
/Issued 1020 AM CDT Fri May 8 2020/ Clouds are expected to clear out this afternoon as the low level moisture gets scoured out.
245 PM CDT Fri May 8 2020 What had been a promising start to warmer weather was interrupted yet again this morning as a strong cold front invaded West Texas and Southeast New Mexico. A weak upper ridge will begin building over the west coast the next few days, leaving West Texas and SE NM under NW flow aloft. A storm system approaching the upper west coast will begin pushing the ridge into the Interior, w/temps attempting to rebound over the weekend.
Gusty winds accompany this clipper, especially on the backside of the low with highest chance for seeing greater than 35 mph gusts in southeast ND.
Still suspect that with the initial cloudiness and stunted warming in the post frontal environment highs will reach into the lower 60s. A few of the coldest plains spots could hit freezing, but most places will keep a little wind and the general environment will be warmer.
318 PM CDT Fri May 8 2020 An unseasonably cold area of high pressure will move from the eastern Plains toward the mid Mississippi River Valley by Saturday morning.
With high pressure in control sunshine is expected Saturday, albeit cold. A weather pattern that looks more appropriate for January has occurred across much of the lower 48. Deep trough and vortex moves into upstate New York on into New England this weekend.
251 PM CDT Fri May 8 2020 (Tonight and Tomorrow) Main story today has been the strong northerly winds in the wake of last night's cold front. With winds diminishing overnight and high pressure skirting off to the east expect lows in the 40s for most of the area.
149 PM EDT Fri May 8 2020 Winds decrease and temperatures drop below freezing tonight reaching the mid to upper twenties east of State Road 15 with areas west of that staying in the upper twenties to around 30 degrees.
A cold front across the middle Mississippi river valley and Ohio valley continues to sink southward into the Tennessee valley today. This should continue as a cold front moves through the area. AD Chattanooga Airport, TN 37 61 38 70 45 / 0 0 0 10 10 Knoxville McGhee Tyson Airport, TN 34 57 36 67 44 / 10 0 0 10 10 Oak Ridge, TN 33 59 36 68 43 / 10 0 0 10 10 Tri Cities Airport, TN 32 53 31 64 42 / 20 0 0 20 20 NC.
308 PM CDT Fri May 8 2020 Cold high pressure will build into the region tonight allowing winds to diminish after sunset. The second stronger wave will move into eastern Nebraska later tomorrow with a cold front.
Thermal trough building into Oregon will result in northerly winds at 10-20 mph for many locations. Offshore upper low may spread some high level clouds into the Pacific northwest later Saturday. Thermal trough over the area with increasing 850mb temps. An upper level ridge of high pressure will continue to build into the Pacific Northwest and strengthen through the period. This morning will still see some brisk temps, with lows in the 30s and some spots below freezing, before most locations warming into the 40s the next few nights.
Clear skies cool temperatures and high pressure are in place over Nebraska, with northwesterly flow aloft in place. As the high pressure center moves eastward tonight, light winds and strong radiative cooling are expected to produce overnight lows in the mid 30's to just above freezing.
A fast-moving cold front passes this period. This will likley affect max temps tomorrow afternoon where sfc temperatures will struggle to get out of the 60s F to the northwest of I-65 and will range to the lower 70s along the coast. A fast-moving cold front passes this period. VFR with respect to CIGs and VSBYS right around Midnight as cold front moves further off to the east.
300 PM CDT Fri May 8 2020 For tonight, a compact upper trough in northwest flow will drop into the Northern Plains and push a cold front through northeast Wyoming and western South Dakota by late tonight. On Saturday, rain shower chances increase as the upper trough and cold front sweep across western Nebraska. The highest POPs will be late morning until late afternoon along and ahead of the 700mb trough axis, and mainly east of HWY 83. Highs near to slightly cooler than previous forecast. At this time, portions of southwest Nebraska are forecast to fall the low 30s, while the remainder of the area should remain mostly clear and see freezing temperatures in the upper 20s to near 30.
Skies will gradually clear behind the cold front, however strong northerly winds (between 15 to 25 mph and gusts near or above 30 mph at times) will keep temperatures from warming up much. High pressure will return to the area for the weekend, and will help keep pleasant conditions in the forecast.
Rain will taper off late this afternoon and early this evening behind a departing cold front. Brisk, gusty northwest winds will bring much colder air into the region as Canadian high pressure settles southward into the Ozarks. After midnight the high will build eastward and cause winds to become light. ranging up to around freezing in the Bowling Green area. Despite ample sunshine and clear skies present throughout the day, expect afternoon highs to struggle into the mid to upper 50s as NW flow continues to pump cooler air into the region.
312 PM EDT Fri May 8 2020 A strong cold front will move across the area this evening. High pressure will build south of the area for Mother's Day.
Thermal trough building into Oregon will result in northerly winds at 10-20 mph for many locations. Offshore upper low may spread some high level clouds into the Pacific northwest later Saturday. Thermal trough over the area with increasing 850mb temps. VFR conditions are expected through the weekend with high pressure over the region. After sunset, winds will shift with drainage out of the higher elevations. An upper level ridge of high pressure will continue to build into the Pacific Northwest and strengthen through the period. This morning will still see some brisk temps, with lows in the 30s and some spots below freezing, before most locations warming into the 40s the next few nights.
1020 AM CDT Fri May 8 2020 Clouds are expected to clear out this afternoon as the low level moisture gets scoured out.
Winds will shift to the south Saturday morning, advecting in slightly warmer air. Highs Saturday should end up in the low 60s across the area.
A northerly breeze has developed as high pressure in Alberta shifts south into Montana tonight.
114 PM CDT Fri May 8 2020 Rains will be moving out with clearing skies as high pressure builds in for tonight. The high will keep things dry Saturday (and cool). Return flow on the back side of the high Saturday night means slightly milder low temperatures.
Mid to high level clouds will be on the increase after midnight across western Kansas as an upper level trough approaches from the northwest. Not only will clouds be on the increase but also a trough of low pressure at the surface will begin to develop cross eastern Colorado. The combination of increasing clouds along with the increase in southeasterly winds in the lower levels early Saturday morning the previous forecast/guidance still looks on track with lows falling back in the mid to upper 30s.
1213 PM CDT Fri May 8 2020 A band of showers/thunderstorms is moving through the region ahead of a cold front that will move through the area early today. Gusty north winds behind the front will diminish this evening with high pressure moving in and becoming centered over the area late tonight.
Temperatures on Saturday will be a few degrees warmer than today's as 700mb readings rebound accordingly. Saturday night will see the west coast ridge slide east to become more centered over the Great Basin.
Normal highs for this time of year are in the low to mid 70s. Northwest flow pattern continues to bring much cooler than normal temperatures to the area so for this May. This will allow for good radiational cooling to take place and we should see lows dip into the low to mid 30s overnight tonight. Highs on Saturday will only be in the low to mid 60s.
There will be a slight chance of isolated showers and storms over the higher terrain with some modest CAPE and decent lapse rates during the late afternoon.
Height rises behind the low are modest and certainly don't indicate headline-worthy gusts, however it will be breezy nonetheless.
Much cooler and drier air will continue to filter swd in the wake of a cold front currently noted just s of I-20.
The cold front that brought the strong winds and cooler temps today has almost cleared the state of Texas at this point. As the high continues moving southeast across KS and into southern Missouri/northern AR over night, winds will ease and begin turning southerly. However, another cold front comes knocking on the door as a low crosses the central Plains.
Sunny skies, dry and breezy conditions will continue through this afternoon as high pressure ridge continues to dominate across the area. Overnight temperatures will be a bit warmer than last night with lows in the 60s over most parts of the peninsula. Weather conditions will be very dry during the day on Saturday, before the weak cold front brings slim chances of showers to areas north of the I-4 Saturday afternoon and evening. Afternoon temperatures will be at least 5 degrees warmer than today as the high builds during the day.
Warm front now into western North Dakota will continue to shift east, reaching Renville County southeast to Stutsman County this evening. Cold front will slice across northeast Montana and southern Saskatchewan this evening, then shift southeast overnight.
Gusty winds are moving into the ArkLaMiss Delta region, presently behind a cold front and should spread over the rest of the area this evening.
259 PM EDT Fri May 8 2020 A cold front will move into and exit the area this afternoon and tonight. There still could be some brief stronger winds moving into the forecast area this afternoon before the cold front arrives. When the cold front moves through there could be some stronger winds associated with that as well but not enough confidence for wind advisory criteria. There probably will not be widespread freezing temperatures but there could be some 30 to 32 degree lows in the warned area.
243 PM CDT Fri May 8 2020 Cold front that blasted through the forecast area early this morning has pushed well south and east of the region.
144 PM MDT Fri May 8 2020 Water vapor show persistent ridge along the west cost with continued northwest flow through the northern plains. Low center is noted over southwest ID with a strong upper low over ALTA/SASK. For tonight, upper low over southwest ID will weaken and phase with upper low diving southeast into the northern plains. Strong cold front will bring a band of precip through the area later tonight (primarily after 06z) through Saturday morning, with precip diminishing in the afternoon.
The more potent disturbance that will be accompanied by a cold front will move through just a bit later in the afternoon and bring a better chance for precipitation.
/issued 625 AM CDT Fri May 8 2020/ /12Z TAFS/ Strong north winds will be the main issue across West Central Texas terminals for today, with winds gusting over 35 knots at times behind a cold front. /issued 422 AM CDT Fri May 8 2020/ (Today and Tonight) Cold front moving into the northern and western Big Country as of 3 AM will shift quickly south across the remainder of the area by shortly after sunrise. Otherwise, much much cooler today with highs mainly in the 70s.
Could see 1-3 inches of snow in the highest peaks of the Little Belts and Big Snowys. Updated 540 PM MDT Fri May 8 2020 (08/12Z TAF Period) Clouds and shower activity will continue to increase through this evening, as another compact low pressure system and surface cold front move south along the eastern edge of the Continental Divide. These showers will mostly be focused along a Canadian cold front, which may cause a few thunderstorms to develop mainly over the eastern plains (possibly Blaine, Chouteau, and Fergus Counties) during the afternoon.
Cliff PREVIOUS DISCUSSION: A cold front will track through the region today with increasing chances for rain showers by the afternoon into tonight. Along with these colder temperatures, look for frost potential and associated impacts, especially at night with lows around or below freezing.
1212 PM CDT Fri May 8 2020 Dry air and trapped moisture beneath 1031 mb high pressure has spawned patchy fog across wrn Nebraska. Pacific high pressure will move over wrn and ncntl Nebraska today followed by return flow and a warm front tonight. The HREF was the basis for an isolated chance of showers associated with the warm front across swrn Nebraska tonight. The next cold front will drop down out of Canada affecting wrn and ncntl Nebraska Saturday. The models have slowed this cold front down and this should allow a brief warm up across srn Nebraska with highs in the mid 60s.
Across the region a cold front stretches from South Texas into Louisiana and northeast into the mid Atlantic states. A Canadian high pressure system is building into the central sections of the country.
1229 PM EDT Fri May 8 2020 Low pressure will bring widespread rain today, with snow mixing in by evening. Improving jet dynamics with an approaching upper trough/reinforcing cold front will deepen moisture and improve ascent over the region today.
A large upper level low moving into the northeast US is driving a strong front across much of the CONUS today. This strong cold front has been making it's way across South Central TX throughout the morning and early afternoon hours today. Cooler and drier air will continue to filter in with overnight lows expected in the low 50s to low 60s.
However, strong northerly winds behind a cold front remain in place.
350 PM CDT Fri May 8 2020 A cool start to the weekend with breezy north winds and afternoon temperatures in the lower 50s despite mostly sunny skies. At the surface, clouds will be on the increase as WAA begins to surge northward into the region, bringing slightly warmer conditions west of I-29.
Warmer temps are in store for the weekend as we gain about 5 degrees each day.
220 PM CDT Fri May 8 2020 Radar imagery this afternoon shows light rain continues across much of the area, with cold front showing up well in both base reflectivity and velocity products currently from north of Waynesboro to near Jamestown. Note that although Nashville is within the Freeze Warning, most of the urban core will not see a freeze tonight, but the outlying parts of Davidson County such as Joelton will likely reach freezing. Regardless, the likelihood of several hours of frost and freezing temperatures tonight this late in the season could be very damaging to unprotected outdoor plants and crops.
Gravity waves pushed through and now the cold front has pushed through Crockett/Madisonville with a thin line of showers and along with isolated thunderstorms to the east of the CWA. This pushed up the forecast temperatures into the lower to mid 90s over the southwestern 1/3 of the area! By 3 pm expect the frontal boundary and storms to focus along and south of a Liberty to Tomball to Columbus line and by 5 pm High Island to Angleton to Edna southward. Could get some sprinkles near the coast as the deeper cooler air arrives Saturday morning but confidence is low 45. Cold front pushes off the coast between 5 and 7 pm and will see winds quickly bounce back up to 20+ knots.
Cold high pressure will build into the region tonight allowing winds to diminish after sunset. The second stronger wave will move into eastern Nebraska later tomorrow with a cold front.
High pressure building into the region will bring warming temperatures through the weekend.
/issued 245 PM CDT Fri May 8 2020/ What had been a promising start to warmer weather was interrupted yet again this morning as a strong cold front invaded West Texas and Southeast New Mexico. A weak upper ridge will begin building over the west coast the next few days, leaving West Texas and SE NM under NW flow aloft. A storm system approaching the upper west coast will begin pushing the ridge into the Interior, w/temps attempting to rebound over the weekend.
These winds will begin to diminish quickly this evening as the sun sets and as the high moves into the area. This high will move across Missouri and Illinois overnight causing the winds to turn light, so with clear skies expect strong radiational cooling which should result in widespread frost as lows fall into the 32-37 range. Have gone on the cooler side of the temperature guidance given the cool, dry airmass.
658 PM CDT Fri May 8 2020 For tonight, a compact upper trough in northwest flow will drop into the Northern Plains and push a cold front through northeast Wyoming and western South Dakota by late tonight. On Saturday, rain shower chances increase as the upper trough and cold front sweep across western Nebraska. The highest POPs will be late morning until late afternoon along and ahead of the 700mb trough axis, and mainly east of HWY 83. Highs near to slightly cooler than previous forecast. At this time, portions of southwest Nebraska are forecast to fall the low 30s, while the remainder of the area should remain mostly clear and see freezing temperatures in the upper 20s to near 30.
Despite some passing mid and high clouds through the day, Saturday will be a beautiful day for outdoor activities with light easterly to southeasterly winds and highs in the low to mid 70s regionwide, about 10 degrees cooler than normal for early May.
842 PM EDT Fri May 8 2020 A cold front and chance of showers will move through the area this evening. A deep upper level trough across the eastern portion of the country will begin to shift east and off the coast Saturday through Saturday night. At the surface, unseasonably chilly high pressure will build into the region for the during the afternoon and overnight hours.
Radar imagery this afternoon shows light rain continues across much of the area, with cold front showing up well in both base reflectivity and velocity products currently from north of Waynesboro to near Jamestown. Note that although Nashville is within the Freeze Warning, most of the urban core will not see a freeze tonight, but the outlying parts of Davidson County such as Joelton will likely reach freezing. Regardless, the likelihood of several hours of frost and freezing temperatures tonight this late in the season could be very damaging to unprotected outdoor plants and crops.
Shower coverage will gradually expand east and spread south later this evening and overnight as a clipper system drops south and east out of southern Canada into northeast MT and ND, dragging a cold front across the area. As colder air works into the area, some snow could affect foothill locations, as well as mix into some rain showers over the lower elevations. Northwest winds will increase over eastern areas in the wake of the cold front late tonight as well, continuing into Saturday morning, before decreasing into the afternoon.
Rain showers across the High Plains and scattered snow showers for the higher terrain will occur overnight into mid-Saturday morning.
Showers and thunderstorms continue over lower Acadiana at this time, but will be advancing offshore over the next few hours with an exiting cold front. Across the region a cold front stretches from South Texas into Louisiana and northeast into the mid Atlantic states. A Canadian high pressure system is building into the central sections of the country.
600 PM CDT Fri May 8 2020 An unseasonably cold area of high pressure will move from the eastern Plains toward the mid Mississippi River Valley by Saturday morning.
A cool start to the weekend with breezy north winds and afternoon temperatures in the lower 50s despite mostly sunny skies. At the surface, clouds will be on the increase as WAA begins to surge northward into the region, bringing slightly warmer conditions west of I-29.
Clouds will move in toward morning as low pressure begins to affect the region. High pressure will build in behind the precip Saturday evening with drier mid-level air.
/issued 243 PM CDT Fri May 8 2020/ Cold front that blasted through the forecast area early this morning has pushed well south and east of the region.
/Issued 259 PM EDT Fri May 8 2020/ A cold front will move into and exit the area this afternoon and tonight. There still could be some brief stronger winds moving into the forecast area this afternoon before the cold front arrives. When the cold front moves through there could be some stronger winds associated with that as well but not enough confidence for wind advisory criteria. There probably will not be widespread freezing temperatures but there could be some 30 to 32 degree lows in the warned area.
Lower temps at locations across NW AR may also allow for brief freezing temperatures with temps potentially falling to 31 or 32 for a brief amount of time tomorrow morning.
The ridges could see close to an inch thanks to an upslope assist and a colder boundary layer. Temperatures will struggle to reach the lower and mid 40s, with 30s lingering in the ridges. With low-level wind turning more westerly and the passage of the 850mb thermal trough, shower activity will taper off during the late afternoon and evening. The sky will clear overnight with high pressure passing to our south.
Surface analysis had the cold front moving through Hattiesburg at 730pm and local radars showed the light rain dissipating across our southeast most zones. The cold front will continue shifting southeast and much cooler and drier air will move into our CWA. Gusty winds are moving into the ArkLaMiss Delta region, presently behind a cold front and should spread over the rest of the area this evening.