Aikyam-Lab/Synoptic-Bench huggingface dataset:
918 AM CST Thu Mar 11 2021 High pressure over southern Saskatchewan will drop southeast into Southern Manitoba today. RAP seems to have a decent handle on it so far, showing stratus and low level RH field gradually breaking up through the day as high pressure builds. Cooler today with a brisk northwest wind. An associated cold front passage will take place through mid-day across western and central North Dakota, though most noticeable cold air advection today remains over the northern tier of the state.
1225 PM EST Thu Mar 11 2021 A cold front will move through the area today with showers and a slight chance of thunderstorms.
Relatively benign weather for Thursday starting the short term in the wake of a cold front yesterday evening and into the overnight. Cooler temperatures this afternoon under mainly clear skies and breezy northeast winds. However, with the increased cloud cover, this could inhibit much if any storm development keeping temperatures down and thus the low level instability.
949 AM MST Thu Mar 11 2021 The upper level trough continues to drop southward along California as the low begins to cut off. This are looks to be influenced by the diffluent zone ahead of the trough. The axis of the positively-tilted trough remains across western WY tonight, keeping any further precip with this system confined to the southeast away from the region. Friday, the upper low will start to push into the Four Corners region.
So, with a surface trof of lower pressure and virtually calm/light and variable winds in play, there could certainly be some fog potential along/within the surface trof late tonight. With all that said, models have consistently shown a strong area of low pressure getting gen'd up across the southwest U.
150 PM CST Thu Mar 11 2021 High pressure settles across the region Friday, slowing meandering east/southeast through the weekend. The impact on temps is for cooler but still above the seasonable normals - with Sat looking like the warmest of the bunch.
145 PM EST Thu Mar 11 2021 Some rain will occur along and in advance of a cold front dropping down from the north this afternoon and into Friday morning. Much cooler but dry weather is in store for weekend. NW sections will see temperatures drop close to freezing by day break.
/Issued 620 AM EST Thu Mar 11 2021/ Forecast area remains on the northern periphery of the persistent upper ridge centered over the Gulf of Mexico through the end of the work-week. Enough moisture recovery by late in the day Friday for at least a slight chance for some showers into the far north in the vicinity of a weak cold front sinking south into the GA/TN/NC border area.
A cutoff low is now moving into central California, and the upstream ridge is flopping over it into the Pacific Northwest.
1112 AM EST Thu Mar 11 2021 Rain chances return today and tonight with the passage of a cold front. Drier and cooler weather is expected Friday and through the weekend. Slight cold advection behind the exiting cold front will knock temperature readings down about ten degrees Friday, but remnant zonal flow aloft and increasing insolation will aid in maintaining above seasonal average temperature.
Issued by National Weather Service Pittsburgh PA 203 PM EST Thu Mar 11 2021 A cold front will advance through the region into Friday.
1014 AM EST Thu Mar 11 2021 Dry and mild weather will continue today as high pressure remains in control. High temperatures today are expected to range from 75-80 for most locations except slightly cooler along the immediate coast.
1158 AM CST Thu Mar 11 2021 Lowered temperatures appreciably for today as cold air advection continues to drive a cold front southward this morning. Mahale (Today and tonight) Showers and storms are struggling to form in our forecast area as a cold front makes its way south. The advancing cold front is expected to stall out just past the northwest half of Oklahoma by mid morning. Cooler temperatures and lighter winds will help mitigate fire danger behind the front.
1133 AM CST Thu Mar 11 2021 Key Points: -Cooler and wetter pattern setting up across the central US.
Meanwhile, aloft deep layer ridging is moving into the western Gulf of Mexico.
This ridging will remain strong enough to keep any weather well to the north of the area through the end of the week and into the weekend. An area of low pressure and associated frontal system develops over the central U.
Cigs will begin to lower below 10,000 ft around TRI late tonight ahead of a cold front. Garuckas Chattanooga Airport, TN 73 53 75 55 73 / 0 0 10 10 10 Knoxville McGhee Tyson Airport, TN 71 55 70 53 64 / 0 10 30 30 30 Oak Ridge, TN 72 54 69 51 64 / 10 10 40 30 30 Tri Cities Airport, TN 71 49 65 47 59 / 0 10 60 30 30.
After a chilly start to the day, afternoon temperatures have made it into the lower to mid 50s over much of the area under sunny skies.
/issued 232 PM CST Thu Mar 11 2021/ SHORT TERM (Tonight through Friday Night): The deep South Texas wind machine is on, with strong high pressure over the Gulf interacting with lower pressure inland and upstream. Big picture has ridging over the Gulf and a slowly maturing mid level low edging into the Desert Southwest through Friday night.
547 PM EST Thu Mar 11 2021 Scattered showers are likely through Friday morning with the approach and passage of a cold front. Otherwise, the sfc cold will exit the region and building high pressure will promote dry and quiet weather the rest of the day.
917 PM EST Thu Mar 11 2021 Scattered showers are likely through Friday morning with the approach and passage of a cold front. Otherwise, the sfc cold will exit the region and building high pressure will promote dry and quiet weather the rest of the day.
525 PM CST Thu Mar 11 2021 High pressure settles across the region Friday, slowing meandering east/southeast through the weekend. The impact on temps is for cooler but still above the seasonable normals - with Sat looking like the warmest of the bunch.
After, some drier air lurking upstream over the western Atlantic is expected to advect into the area via the low-level easterly winds.
900 PM EST Thu Mar 11 2021 Deep low pressure now centered over James Bay continues to lift NE away from the Great Lakes region late this evening. A look at upstream satellite imagery shows the leading edge of increasing low clouds pushing into far Western Lake Superior associated with a weaker low pressure system and attendant cold front. dragging the cold front into our CWA. Strong southwest to west wind gusts persist late this afternoon in the wake of a strong cold front that cleared the forecast area earlier today. High pressure then moves over the region Friday night resulting in clear skies and very good radiational cooling conditions (some spots inland could drop down toward zero).
429 PM MST Thu Mar 11 2021 The upper low center currently tracking along the coast of southern California will move through the far southwest U.
817 PM EST Thu Mar 11 2021 High pressure ridging across Florida will keep an easterly wind flow and mostly clear skies over the region tonight. The 00Z evening sounding continues to show a predominant easterly flow in the lower levels and is starting to show the expected increase in moisture with a PWAT of 0. Strong high pressure ridging in from the northeast will produce rain- free conditions and gusty east-northeast winds through the end of the week and into the weekend.
Limited window for possible diurnal cu as a cold front moves through Friday afternoon. Low level cold advection and strong anticyclonic flow trajectories will lead to surface ridging over Southeast Michigan Friday. 5C to 850mb supports high temperatures Friday of around 50 degrees for many areas, cooler north and near the Lakeshore. Strong upper level confluence will lead to stable surface anticyclone over Southeast Michigan this weekend.
356 PM MST Thu Mar 11 2021 The upper low center currently tracking along the coast of southern California will move through the far southwest U.
238 PM MST Thu Mar 11 2021 Water vapor shows large upper low across the western CONUS and a fracturing trough across the Dakotas. Surface obs show high pressure centered across the Dakotas and Nebraska, bringing quiet weather to the area today.
High pressure aloft will keep the area dry with relatively light winds through the weekend.
Isolated afternoon thunderstorms will be possible towards the higher terrain in portions of Kern County. Heavy snow accumulations are expected in the higher elevations of the Kern County mountains into this evening.
657 PM EST Thu Mar 11 2021 A cold front will advance through the region into Friday.
A cold front is draped across the Ohio River Valley with a slug of rain moving across central Kentucky. Cold front to our north this evening will slowly sag southward through the taf period.
High pressure off the southeast Coast has a ridge anchored into GA and AL, while a southerly fetch of moisture continues off the central and western Gulf of Mexico into the lower MS and OH valleys. A cold front dropping southeast through southern IL and MO will sag into KY, far northwest TN, and northern AR late tonight into early Friday morning. A ridge of theta-E at 9-8h will flow parallel to this boundary, maintaining at least light to moderate rainfall and perhaps a few thunderstorms well to our north.
931 PM EST Thu Mar 11 2021 The large ridge sitting off the eastern seaboard is still maintaining a grip over the Keys and coastal waters. Radar is picking up a field of very light showers dragging along the islands, with scattered light showers in the Florida Straits mainly south of the lower Keys.
Latest surface analysis places a 990mb low over Quebec, Canada with a cold front extending south through Toledo, Ohio and back through Carbondale, Illinois and into Oklahoma City, Oklahoma.
436 PM MST Thu Mar 11 2021 Water vapor shows large upper low across the western CONUS and a fracturing trough across the Dakotas. Surface obs show high pressure centered across the Dakotas and Nebraska, bringing quiet weather to the area today.
High pressure will keep most of our area dry Friday, but the next storm system will spread some rain into the south half of Illinois Friday night.
Aloft, subtropical ridging over the Gulf is progged to expand a bit northwestward in response to a vigorous upper cyclone digging into the Desert Southwest.
503 PM MST Thu Mar 11 2021 A weak cold front was moving E through the area per surface obs, and mesoanalysis showed instability over the area. This will be followed by rising heights over our region tonight as low over southern CA becomes completely cut off, and flat ridging builds from the PacNW to northern Rockies. JKL Still watching the large low pressure that will move out of the Central Rockies and into the Central Plains this weekend.
Otherwise, temperatures are generally in the lower to mid 70s.
There will not be much change with the overall pattern through Friday with continued light snow across the south ahead of the upper low. For Friday, the moisture does surge slightly farther north to a Red Canyon-Muddy Gap line with showers favored over the higher terrain. The gradual trend will be for increasing precipitation chances across the central and south late Friday night as the upper low makes its eastward trek and impacts the weekend forecast.
542 PM CST Thu Mar 11 2021 (This evening through Friday) The forecast the next 24 hours will be modulated by the cold front that has pushed southeast of I-44 today. The ongoing convection may reinforce the cold front and stall/delay its the northward advancement. Therefore, opted to trend toward the cooler end of guidance for tomorrow's highs given the abundant cloud cover/precipitation expected along and north of the effective surface front--especially since yesterday's runs of the global models (i.
910 PM EST Thu Mar 11 2021 High pressure will remain across the region through Friday. A weak backdoor cold front is forecast to move over our area this weekend. The region will remain along the western fringes of subtropical high pressure.
A mid level low was located over southern California this afternoon within a mean trough from Montana into the eastern Pacific.
556 PM CST Thu Mar 11 2021 A developing warm front across Wyoming this afternoon will lift north and east into wrn Nebraska. While this is occurring, a Canadian cold front across the Dakotas will drift south into the upper Missouri Basin. The temperature forecast for highs Friday uses the short term model blend which is cooler than the 50 percentile of the model blend. This rain is most likely across srn Nebraska where the NAM and GFS models show a warm front lifting north through wrn KS. The warm front will continue to lift very slowly north Friday night and precipitable water will approach 0.
Water vapor satellite imagery and H5 heights show a large trough digging southward along the West Coast of California with the subtropical jet feeding up moisture into Mexico and the Southern Plains. The cold front that moved through the area last night has stalled generally along a line from SW Oklahoma to south-central Missouri and up into southern Illinois. As the upper level trough moves towards the Four Corners region, lift will enhance over the Southern and Central Plains.
Band of clouds with cold front will push east and clearing which is entering the Devils Lake area will spread east through early evening. This will leave most of the night clear across the area with diminishing wind as high pressure moves south. Sunny Friday and warmer air will move in with a big rise in temps during the day reaching the 40s, with around 50 DVL basin.
/Issued 216 PM CST Thu Mar 11 2021/ Cold front has pushed into far northwest Arkansas early this afternoon, extending southwest to near a Tahlequah, Okemah line.
607 PM EST Thu Mar 11 2021 High pressure will remain across the region through Friday. A weak backdoor cold front is forecast to move over our area this weekend. The region will remain along the western fringes of subtropical high pressure.
825 PM EST Thu Mar 11 2021 Another round of light rain showers will move through central PA tonight into Friday morning along a cold front. An additional one third of an inch of rain will be possible across portions of the Alleghenies, while only a couple of hundredths are expected in the lower Susquehanna Valley. Drier and cooler weather is in store for the weekend. Have seen the band of rain showers from earlier today fizzle out across the lower Susquehanna Valley, with only a few sprinkles left across portions of Schuylkill to York Counties and points east. High pressure building into the upper Ohio Valley Friday night will veer winds more northwesterly, while continuing to bring cooler air into the Commonwealth.
Warm and dry conditions will continue today as deep layer ridging settles in over the area.
1254 AM EST Fri Mar 12 2021 Showers will exit the region this morning as a cold front moves into the Mid-Atlantic region. The cold front will settle in over the Mid-Atlantic region this morning. Otherwise, cooler, and much drier air, will overspread the region promoting quiet weather the rest of the day. Broad high pressure will settle in over the Upper Ohio Valley through the weekend. Temperature should remain near seasonal averages, though slightly higher/lower temperatures remain possible dependent on the low track.
Upper level ridging will remain centered over the central Gulf of Mexico, keeping a dry northwesterly flow pattern in place aloft along with slowly rising heights over our region. Any fog that develops will dissipate during the morning hours, with occasional thin cirrus expected to spill overtop of the ridge over the region. Highs will continue on their upward trend, with temperatures in the lower 80s at most inland locations, and mid 70s at the area beaches. Overnight lows will be in the low to mid 50s, and fog, locally dense, is possible across northeast Florida.
High pressure moves to our east, and winds become south/southeast.
A nearly stationary cold front extends from SE OK northeastward into NW AR between XNA and FYV. With that said, these showers are still relatively weak, but this strengthening trend is expected to continue through the night as the low level jet strengthens allowing for better shear and for better moisture. Also, as the night progresses, the nearly stationary front will slowly begin to move northward effectively transitioning to a warm front.
120 AM MST Fri Mar 12 2021 High pressure aloft will keep the area dry with relatively light winds through the weekend.
Otherwise, high pressure aloft will keep skies mostly clear overnight. Coulston High pressure aloft will keep the area dry with relatively light winds through the weekend.
1043 PM CST Thu Mar 11 2021 High pressure settles across the region Friday, slowing meandering east/southeast through the weekend. The impact on temps is for cooler but still above the seasonable normals - with Sat looking like the warmest of the bunch.
The rain was associated with an east-west cold front that will continue to push southward today, crossing into Tennessee around midday. Scattered light rain showers will return tonight, especially late tonight, as an upper wave rides over the top of an upper ridge centered above the Gulf of Mexico. That's about 5 to 10 degrees warmer than normal.
Most of the showers across KY are staying close to the surface cold front, which is just crossing the OH River. Rain is expected to spread into our northern areas before sunrise, with the cold front passage following close behind. Chattanooga Airport, TN 76 55 72 54 77 / 20 30 20 10 0 Knoxville McGhee Tyson Airport, TN 70 53 62 52 68 / 60 60 30 20 10 Oak Ridge, TN 69 51 61 51 67 / 60 60 40 20 20 Tri Cities Airport, TN 63 47 61 46 60 / 70 50 30 30 40.
Skies were clear per satellite imagery as high pressure aloft builds over the area. Friday will be dry and mild under the high pressure. This will be followed by rising heights over our region tonight as low over southern CA becomes completely cut off, and flat ridging builds from the PacNW to northern Rockies. JKL Still watching the large low pressure that will move out of the Central Rockies and into the Central Plains this weekend.
Increasing cloud cover, a persistent mixy boundary layer, and warm advection aloft should keep overnight lows near or even slightly above the freezing mark.
The tail end of its trailing cold front will move across srn WI from 12-15Z Fri. The nwly winds will be a little gusty in the wake of the cold front but subside later in the afternoon when polar high pressure moves from nrn MN into the nrn Great Lakes.
1017 PM EST Thu Mar 11 2021 Another round of light rain showers will move through central PA tonight into Friday morning along a cold front. An additional one third of an inch of rain will be possible across portions of the Alleghenies, while only a couple of hundredths are expected in the lower Susquehanna Valley. Drier and cooler weather is in store for the weekend. Have seen the band of rain showers from earlier today fizzle out across the lower Susquehanna Valley, with only a few sprinkles left across portions of Schuylkill to York Counties and points east. High pressure building into the upper Ohio Valley Friday night will veer winds more northwesterly, while continuing to bring cooler air into the Commonwealth.
In all likelihood, there will be a sharp cutoff to QPF/snow on the nrn end of the system given strong high pressure with an antecedent dry air mass to the north of the approaching system. Water vapor shows large upper low across the western CONUS and a fracturing trough across the Dakotas. Surface obs show high pressure centered across the Dakotas and Nebraska, bringing quiet weather to the area today.
High pressure over the region will provide mostly clear skies tonight, with occasional few-sct cirrus decks AOA 15kft AGL.
1253 AM EST Fri Mar 12 2021 Another round of light rain showers will move through central PA tonight into Friday morning along a cold front. An additional one third of an inch of rain will be possible across portions of the Alleghenies, while only a couple of hundredths are expected in the lower Susquehanna Valley. Drier and cooler weather is in store for the weekend. High pressure building into the upper Ohio Valley Friday night will veer winds more northwesterly, while continuing to bring cooler air into the Commonwealth.
1125 PM CST Thu Mar 11 2021 A developing warm front across Wyoming this afternoon will lift north and east into wrn Nebraska. While this is occurring, a Canadian cold front across the Dakotas will drift south into the upper Missouri Basin. The temperature forecast for highs Friday uses the short term model blend which is cooler than the 50 percentile of the model blend. This rain is most likely across srn Nebraska where the NAM and GFS models show a warm front lifting north through wrn KS. The warm front will continue to lift very slowly north Friday night and precipitable water will approach 0.
354 AM EST Fri Mar 12 2021 Showers will exit the region this morning as a cold front moves into the Mid-Atlantic region. The late night cold front will settle in over the Mid-Atlantic region this morning. Otherwise, cooler, and much drier air, will overspread the region promoting quiet weather for the rest of the day. Broad high pressure will settle in over the Upper Ohio Valley through the weekend. Temperature should remain near seasonal averages, though slightly higher/lower temperatures remain possible dependent on the low track.
1232 AM EST Fri Mar 12 2021 High pressure will remain across the region through Friday. A weak backdoor cold front is forecast to move over our area this weekend. The region will remain along the western fringes of subtropical high pressure.
316 AM EST Fri Mar 12 2021 High pressure will remain across the region today.
As a result, there will be a pretty stark temperature spread across the area with those along the TN/KY border only reaching the low to mid 60s while those along the TN/AL border will reach the mid to upper 70s. A similar temperature differential will be seen tomorrow with those to our north on the cooler side of things with highs near 60 while those to the south will see temps closer to the mid 70s again.
Most areas should drop into the lower 50s due to lighter winds and clearing seen in observational trends. A ridge of theta-E at 9-8h will flow parallel to this boundary, maintaining at least light to moderate rainfall and perhaps a few thunderstorms well to our north.
1216 AM EST Fri Mar 12 2021 A cold front will advance through the region into Friday.
The weak cold front to our north near the Ohio River will sag south and into our area today, then continue to drift slowly south before stalling near our southern border tonight.
314 AM EST Fri Mar 12 2021 A weak cold front will move southeast across the area this evening.
A cold front will drop south and stall near the area this weekend, bringing cooler temperatures with little to no precipitation.
1152 PM EST Thu Mar 11 2021 Deep low pressure now centered over James Bay continues to lift NE away from the Great Lakes region late this evening. A look at upstream satellite imagery shows the leading edge of increasing low clouds pushing into far Western Lake Superior associated with a weaker low pressure system and attendant cold front. dragging the cold front into our CWA. Strong southwest to west wind gusts persist late this afternoon in the wake of a strong cold front that cleared the forecast area earlier today. High pressure then moves over the region Friday night resulting in clear skies and very good radiational cooling conditions (some spots inland could drop down toward zero).
The warming trend continues into Sat, then a slight increase in cloud cover Sun results in a tapering off of temperatures for the afternoon as the low approaches.
1031 PM EST Thu Mar 11 2021 A cold front will advance through the region into Friday.
228 AM CST Fri Mar 12 2021 Fairly quiet weather will occur across the region today and tonight thanks to a large area of high pressure at the surface. The high is centered over North Dakota early this morning and will drift east and become centered over lower Michigan tonight. The ridge axis will become oriented east/west along the Interstate 90 corridor back into South Dakota.